/* roulang page: index */
:root {
            --c-charcoal: #1A1A1A;
            --c-amber: #F59E0B;
            --c-amber-hover: #D97E00;
            --c-warm-bg: #FAF7F2;
            --c-copper: #7C5C3D;
            --c-teal-gray: #2E3A3A;
            --c-border-light: rgba(124, 92, 61, 0.18);
            --c-border-subtle: rgba(26, 26, 26, 0.08);
            --c-text-muted: #6B5D4F;
            --c-text-light: #F5EFE6;
            --c-glass-light: rgba(255, 255, 255, 0.65);
            --c-glass-dark: rgba(20, 20, 20, 0.55);
            --radius-card: 18px;
            --radius-btn: 10px;
            --radius-hero: 22px;
            --shadow-soft: 0 8px 24px rgba(26, 26, 26, 0.08);
            --shadow-hover: 0 14px 36px rgba(26, 26, 26, 0.14);
            --shadow-nav: 0 4px 20px rgba(26, 26, 26, 0.1);
            --font-cn: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-mono: 'SFMono-Regular', 'Menlo', 'Consolas', 'PingFang SC', monospace;
            --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-med: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-cn);
            background-color: var(--c-warm-bg);
            color: var(--c-charcoal);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--c-amber);
        }

        img {
            max-width: 100%;
            display: block;
            height: auto;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-pad {
            padding-top: 96px;
            padding-bottom: 96px;
        }

        .section-pad-sm {
            padding-top: 64px;
            padding-bottom: 64px;
        }

        /* ===== Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: var(--c-glass-light);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--c-border-light);
            box-shadow: 0 2px 16px rgba(26, 26, 26, 0.04);
            transition: all var(--transition-med);
        }

        .site-header.scrolled {
            background-color: rgba(250, 247, 242, 0.95);
            box-shadow: var(--shadow-nav);
            border-bottom-color: var(--c-border-light);
        }

        .site-header.scrolled .nav-logo {
            font-size: 22px;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .nav-logo {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--c-charcoal);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: font-size var(--transition-med);
        }

        .nav-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--c-charcoal);
            color: var(--c-amber);
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 16px;
            letter-spacing: -0.5px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--c-charcoal);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background-color: var(--c-amber);
            border-radius: 2px;
            transition: width var(--transition-med);
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--c-amber);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
        }

        .nav-cta:hover {
            background-color: var(--c-amber-hover);
            color: var(--c-charcoal);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(245, 158, 11, 0.35);
        }

        .nav-search-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            border: 1px solid var(--c-border-light);
            background: rgba(255, 255, 255, 0.5);
            color: var(--c-charcoal);
            transition: all var(--transition-fast);
        }

        .nav-search-btn:hover {
            border-color: var(--c-amber);
            color: var(--c-amber);
            background: rgba(255, 255, 255, 0.8);
        }

        .nav-burger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            margin-left: auto;
            background: none;
            border: none;
            cursor: pointer;
        }

        .nav-burger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--c-charcoal);
            border-radius: 2px;
            transition: all var(--transition-fast);
            transform-origin: center;
        }

        .mobile-menu {
            display: none;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            background: rgba(250, 247, 242, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--c-border-light);
        }

        .mobile-menu.open {
            max-height: 520px;
        }

        .mobile-menu-inner {
            padding: 16px 24px 24px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-menu a {
            display: flex;
            align-items: center;
            font-size: 16px;
            font-weight: 500;
            color: var(--c-charcoal);
            padding: 14px 8px;
            min-height: 44px;
            border-radius: 8px;
            transition: all var(--transition-fast);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(245, 158, 11, 0.1);
            color: var(--c-amber);
        }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition-fast);
            box-shadow: 0 6px 18px rgba(245, 158, 11, 0.28);
            text-decoration: none;
        }

        .btn-primary:hover {
            background-color: var(--c-amber-hover);
            color: var(--c-charcoal);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(245, 158, 11, 0.38);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--c-amber);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            background: transparent;
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 15px;
            border: 1px solid var(--c-charcoal);
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .btn-secondary:hover {
            background: var(--c-warm-bg);
            border-color: var(--c-amber);
            color: var(--c-amber);
            transform: translateY(-2px);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid var(--c-amber);
            outline-offset: 2px;
        }

        .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-weight: 600;
            font-size: 14px;
            color: var(--c-charcoal);
            text-decoration: none;
            position: relative;
            padding-bottom: 2px;
            transition: color var(--transition-fast);
        }

        .btn-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--c-amber);
            border-radius: 1px;
            transition: all var(--transition-med);
        }

        .btn-link:hover {
            color: var(--c-amber);
        }

        .btn-link:hover::after {
            background: var(--c-amber-hover);
        }

        /* ===== Badge / Tag ===== */
        .tag-badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            background: rgba(245, 158, 11, 0.12);
            color: #B87C00;
            border: 1px solid rgba(245, 158, 11, 0.28);
            transition: all var(--transition-fast);
        }

        .tag-badge-dark {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.1);
            color: var(--c-amber);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .tag-sm {
            padding: 3px 10px;
            font-size: 12px;
            border-radius: 14px;
            background: rgba(124, 92, 61, 0.1);
            color: var(--c-copper);
            font-weight: 500;
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            padding-top: 140px;
            padding-bottom: 60px;
            background: var(--c-warm-bg);
            border-bottom: 1px solid var(--c-border-light);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 45%;
            height: 100%;
            background: linear-gradient(135deg, rgba(245, 158, 11, 0.06) 0%, rgba(124, 92, 61, 0.04) 100%);
            border-radius: 60px 0 0 60px;
            z-index: 0;
        }

        .hero-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }

        .hero-content {
            padding-right: 20px;
        }

        .hero-title {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--c-charcoal);
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .hero-title .highlight {
            color: var(--c-amber);
            position: relative;
        }

        .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--c-teal-gray);
            margin-bottom: 28px;
            max-width: 520px;
        }

        .hero-cta-group {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }

        .hero-data-points {
            display: flex;
            align-items: center;
            gap: 28px;
            flex-wrap: wrap;
        }

        .hero-data-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-data-value {
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 20px;
            color: var(--c-amber);
            letter-spacing: -0.5px;
        }

        .hero-data-label {
            font-size: 13px;
            color: var(--c-text-muted);
        }

        .hero-visual {
            position: relative;
            border-radius: var(--radius-hero);
            overflow: hidden;
            background: var(--c-charcoal);
            min-height: 380px;
            display: flex;
            align-items: flex-end;
            padding: 32px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            box-shadow: var(--shadow-hover);
        }

        .hero-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 26, 26, 0.1) 0%, rgba(26, 26, 26, 0.75) 100%);
            border-radius: var(--radius-hero);
        }

        .hero-visual-content {
            position: relative;
            z-index: 1;
            color: var(--c-text-light);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .hero-visual-label {
            font-size: 13px;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--c-amber);
            font-weight: 500;
        }

        .hero-visual-title {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
        }

        .hero-visual-stats {
            display: flex;
            gap: 20px;
            font-family: var(--font-mono);
            font-size: 18px;
            font-weight: 600;
        }

        .hero-visual-stats span {
            color: var(--c-amber);
        }

        /* ===== Section Headers ===== */
        .section-header {
            margin-bottom: 48px;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--c-copper);
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-label::before {
            content: '';
            display: inline-block;
            width: 20px;
            height: 2px;
            background: var(--c-amber);
            border-radius: 2px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--c-charcoal);
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--c-text-muted);
            line-height: 1.8;
            max-width: 600px;
        }

        /* ===== Coupon/Data Theme Grid ===== */
        .coupon-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .coupon-card {
            position: relative;
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--c-border-light);
            padding: 24px;
            transition: all var(--transition-med);
            box-shadow: var(--shadow-soft);
            overflow: hidden;
        }

        .coupon-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--c-amber);
            opacity: 0;
            transition: opacity var(--transition-fast);
        }

        .coupon-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(245, 158, 11, 0.4);
        }

        .coupon-card:hover::before {
            opacity: 1;
        }

        .coupon-no {
            display: inline-flex;
            align-items: center;
            font-family: var(--font-mono);
            font-size: 12px;
            font-weight: 600;
            color: var(--c-amber);
            background: rgba(245, 158, 11, 0.1);
            padding: 4px 10px;
            border-radius: 6px;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
        }

        .coupon-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--c-charcoal);
            margin-bottom: 8px;
        }

        .coupon-card p {
            font-size: 14px;
            color: var(--c-text-muted);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .coupon-card .coupon-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--c-charcoal);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition-fast);
        }

        .coupon-card .coupon-link:hover {
            color: var(--c-amber);
        }

        /* ===== Rules / Usage Guide ===== */
        .rules-section {
            background: var(--c-charcoal);
            color: var(--c-text-light);
            border-radius: 28px;
            overflow: hidden;
        }

        .rules-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .rules-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .rules-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            font-size: 15px;
            line-height: 1.7;
            color: rgba(245, 239, 230, 0.85);
        }

        .rules-list .rule-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: rgba(245, 158, 11, 0.18);
            color: var(--c-amber);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            font-family: var(--font-mono);
        }

        .rules-visual {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            border-radius: 18px;
            min-height: 360px;
            position: relative;
            overflow: hidden;
        }

        .rules-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(26, 26, 26, 0.55);
        }

        .rules-visual-inner {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            padding: 24px;
            height: 100%;
            gap: 16px;
            flex-wrap: wrap;
        }

        .rules-stat {
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 28px;
            color: var(--c-amber);
            line-height: 1;
        }

        .rules-stat-label {
            font-size: 13px;
            color: rgba(245, 239, 230, 0.75);
        }

        /* ===== Services ===== */
        .services-grid {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 24px;
        }

        .service-card-large {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--c-border-light);
            padding: 36px;
            display: flex;
            flex-direction: column;
            gap: 18px;
            box-shadow: var(--shadow-soft);
            transition: all var(--transition-med);
        }

        .service-card-large:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .service-img {
            width: 100%;
            height: 220px;
            border-radius: 14px;
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }

        .service-card-large h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--c-charcoal);
        }

        .service-card-large p {
            font-size: 15px;
            color: var(--c-text-muted);
            line-height: 1.8;
        }

        .service-cards-stack {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .service-card-small {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--c-border-light);
            padding: 24px 28px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            box-shadow: var(--shadow-soft);
            transition: all var(--transition-med);
        }

        .service-card-small:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .service-card-small .service-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(245, 158, 11, 0.12);
            color: var(--c-amber);
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .service-card-small h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--c-charcoal);
            margin-bottom: 6px;
        }

        .service-card-small p {
            font-size: 14px;
            color: var(--c-text-muted);
            line-height: 1.7;
        }

        /* ===== Stats / Dashboard ===== */
        .stats-section {
            background: var(--c-charcoal);
            border-radius: 28px;
            padding: 56px 48px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }

        .stat-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .stat-value {
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 36px;
            color: var(--c-amber);
            letter-spacing: -1px;
            line-height: 1;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(245, 239, 230, 0.7);
        }

        .stat-bar {
            margin-top: 8px;
            height: 4px;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 2px;
            overflow: hidden;
        }

        .stat-bar-fill {
            height: 100%;
            background: var(--c-amber);
            border-radius: 2px;
            transition: width 1.2s ease;
        }

        /* ===== Cases ===== */
        .case-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            padding: 32px 0;
            border-bottom: 1px solid var(--c-border-light);
        }

        .case-row:last-child {
            border-bottom: none;
        }

        .case-row.reverse .case-text {
            order: 2;
        }

        .case-row.reverse .case-img {
            order: 1;
        }

        .case-text h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--c-charcoal);
            margin-bottom: 12px;
        }

        .case-text p {
            font-size: 15px;
            color: var(--c-text-muted);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .case-img {
            border-radius: var(--radius-card);
            overflow: hidden;
            height: 260px;
            background-size: cover;
            background-position: center;
            box-shadow: var(--shadow-soft);
        }

        /* ===== News / Info ===== */
        .news-layout {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 40px;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 20px 0;
            border-bottom: 1px solid var(--c-border-light);
            transition: all var(--transition-fast);
        }

        .news-item:first-child {
            padding-top: 0;
        }

        .news-item:hover {
            background: rgba(245, 158, 11, 0.04);
            padding-left: 12px;
            border-radius: 8px;
        }

        .news-date-block {
            flex-shrink: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            width: 58px;
            height: 58px;
            border-radius: 12px;
            background: var(--c-charcoal);
            color: #fff;
            font-family: var(--font-mono);
            gap: 2px;
        }

        .news-date-block .day {
            font-size: 20px;
            font-weight: 700;
            color: var(--c-amber);
            line-height: 1;
        }

        .news-date-block .month {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.7);
        }

        .news-item-body h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--c-charcoal);
            margin-bottom: 6px;
            line-height: 1.5;
        }

        .news-item-body p {
            font-size: 14px;
            color: var(--c-text-muted);
            line-height: 1.6;
            margin-bottom: 8px;
        }

        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-sidecard {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 24px;
            border: 1px solid var(--c-border-light);
            box-shadow: var(--shadow-soft);
        }

        .news-sidecard h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--c-charcoal);
            margin-bottom: 12px;
        }

        .news-tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        /* ===== Depth Content ===== */
        .depth-content {
            background: #fff;
            border-radius: 24px;
            padding: 40px 44px;
            border: 1px solid var(--c-border-light);
            box-shadow: var(--shadow-soft);
            margin-bottom: 28px;
        }

        .depth-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--c-charcoal);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .depth-content p {
            font-size: 15px;
            color: var(--c-charcoal);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .depth-content p:last-child {
            margin-bottom: 0;
        }

        /* ===== Reviews ===== */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .review-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 24px;
            border: 1px solid var(--c-border-light);
            box-shadow: var(--shadow-soft);
            transition: all var(--transition-med);
        }

        .review-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .review-stars {
            color: var(--c-amber);
            font-size: 15px;
            margin-bottom: 10px;
            letter-spacing: 2px;
        }

        .review-card blockquote {
            font-size: 14px;
            color: var(--c-teal-gray);
            line-height: 1.75;
            margin-bottom: 14px;
            font-style: normal;
            quotes: none;
        }

        .review-author {
            font-size: 13px;
            font-weight: 600;
            color: var(--c-charcoal);
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: #fff;
            border-radius: 14px;
            border: 1px solid var(--c-border-light);
            box-shadow: var(--shadow-soft);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(245, 158, 11, 0.35);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--c-charcoal);
            cursor: pointer;
            user-select: none;
            width: 100%;
            text-align: left;
        }

        .faq-arrow {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.12);
            color: var(--c-amber);
            font-size: 14px;
            transition: transform var(--transition-med);
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-bottom: 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--c-teal-gray);
            line-height: 1.8;
        }

        /* ===== CTA Section ===== */
        .cta-banner {
            background: var(--c-charcoal);
            border-radius: 24px;
            padding: 48px 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: rgba(245, 158, 11, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-banner h3 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .cta-banner p {
            font-size: 15px;
            color: rgba(245, 239, 230, 0.75);
            max-width: 420px;
        }

        /* ===== Contact / Form ===== */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
        }

        .contact-form {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .form-group label {
            font-size: 14px;
            font-weight: 500;
            color: var(--c-charcoal);
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid var(--c-border-light);
            background: #fff;
            font-size: 15px;
            color: var(--c-charcoal);
            transition: all var(--transition-fast);
            width: 100%;
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--c-amber);
            box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.12);
        }

        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }

        .contact-info-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 32px;
            border: 1px solid var(--c-border-light);
            box-shadow: var(--shadow-soft);
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .contact-info-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--c-charcoal);
        }

        .contact-info-item .ci-icon {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(245, 158, 11, 0.12);
            color: var(--c-amber);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--c-charcoal);
            color: var(--c-text-light);
            padding-top: 64px;
            padding-bottom: 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1.5fr 1.5fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand h4 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(245, 239, 230, 0.65);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(245, 239, 230, 0.7);
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--c-amber);
        }

        .footer-contact-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 14px;
            color: rgba(245, 239, 230, 0.7);
        }

        .footer-contact-list li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-contact-list .fi-icon {
            color: var(--c-amber);
            font-weight: 700;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            font-size: 12px;
            color: rgba(245, 239, 230, 0.5);
        }

        .footer-bottom a {
            color: rgba(245, 239, 230, 0.6);
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--c-amber);
        }

        .footer-beian {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-visual {
                min-height: 280px;
            }

            .services-grid {
                grid-template-columns: 1fr;
            }

            .coupon-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .stats-section {
                grid-template-columns: repeat(2, 1fr);
                padding: 40px 32px;
            }

            .news-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .contact-grid {
                grid-template-columns: 1fr;
            }

            .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .nav-right .nav-cta {
                display: none;
            }

            .nav-burger {
                display: flex;
            }

            .mobile-menu {
                display: block;
            }

            .nav-inner {
                height: 64px;
            }

            .nav-logo {
                font-size: 20px;
            }

            .hero-section {
                padding-top: 110px;
                padding-bottom: 40px;
            }

            .hero-title {
                font-size: 32px;
            }

            .section-pad {
                padding-top: 64px;
                padding-bottom: 64px;
            }

            .section-title {
                font-size: 26px;
            }

            .coupon-grid {
                grid-template-columns: 1fr;
            }

            .stats-section {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
                padding: 32px 24px;
            }

            .stat-value {
                font-size: 28px;
            }

            .case-row {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .case-row.reverse .case-text {
                order: 1;
            }

            .case-row.reverse .case-img {
                order: 2;
            }

            .rules-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .reviews-grid {
                grid-template-columns: 1fr;
            }

            .cta-banner {
                padding: 32px 24px;
                flex-direction: column;
                align-items: flex-start;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }

            .depth-content {
                padding: 28px 24px;
            }

            .hero-cta-group {
                flex-direction: column;
                align-items: flex-start;
            }

            .hero-cta-group .btn-primary,
            .hero-cta-group .btn-secondary {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .hero-title {
                font-size: 28px;
            }

            .stats-section {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .stat-value {
                font-size: 24px;
            }

            .coupon-card {
                padding: 18px;
            }

            .section-title {
                font-size: 22px;
            }

            .nav-logo {
                font-size: 18px;
            }

            .nav-logo .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 13px;
                border-radius: 8px;
            }
        }

/* roulang page: category2 */
:root {
            --c-charcoal: #1A1A1A;
            --c-amber: #F59E0B;
            --c-amber-hover: #D97E00;
            --c-warm-bg: #FAF7F2;
            --c-copper: #7C5C3D;
            --c-teal-gray: #2E3A3A;
            --c-border-light: rgba(124, 92, 61, 0.18);
            --c-border-subtle: rgba(26, 26, 26, 0.08);
            --c-text-muted: #6B5D4F;
            --c-text-light: #F5EFE6;
            --c-glass-light: rgba(255, 255, 255, 0.65);
            --c-glass-dark: rgba(20, 20, 20, 0.55);
            --radius-card: 18px;
            --radius-btn: 10px;
            --radius-hero: 22px;
            --shadow-soft: 0 8px 24px rgba(26, 26, 26, 0.08);
            --shadow-hover: 0 14px 36px rgba(26, 26, 26, 0.14);
            --shadow-nav: 0 4px 20px rgba(26, 26, 26, 0.1);
            --font-cn: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-mono: 'SFMono-Regular', 'Menlo', 'Consolas', 'PingFang SC', monospace;
            --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-med: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-cn);
            background-color: var(--c-warm-bg);
            color: var(--c-charcoal);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--c-amber);
        }

        img {
            max-width: 100%;
            display: block;
            height: auto;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-pad {
            padding-top: 96px;
            padding-bottom: 96px;
        }

        .section-pad-sm {
            padding-top: 64px;
            padding-bottom: 64px;
        }

        /* ===== Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: var(--c-glass-light);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--c-border-light);
            box-shadow: 0 2px 16px rgba(26, 26, 26, 0.04);
            transition: all var(--transition-med);
        }

        .site-header.scrolled {
            background-color: rgba(250, 247, 242, 0.95);
            box-shadow: var(--shadow-nav);
            border-bottom-color: var(--c-border-light);
        }

        .site-header.scrolled .nav-logo {
            font-size: 22px;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .nav-logo {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--c-charcoal);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: font-size var(--transition-med);
        }

        .nav-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--c-charcoal);
            color: var(--c-amber);
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 16px;
            letter-spacing: -0.5px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--c-charcoal);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background-color: var(--c-amber);
            border-radius: 2px;
            transition: width var(--transition-med);
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--c-amber);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
        }

        .nav-cta:hover {
            background-color: var(--c-amber-hover);
            color: var(--c-charcoal);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(245, 158, 11, 0.35);
        }

        .nav-search-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: transparent;
            border: 1px solid var(--c-border-light);
            color: var(--c-charcoal);
            font-size: 16px;
            transition: all var(--transition-fast);
        }

        .nav-search-btn:hover {
            background: var(--c-warm-bg);
            border-color: var(--c-amber);
            color: var(--c-amber);
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            padding: 10px;
            border-radius: 10px;
            background: transparent;
            border: 1px solid var(--c-border-light);
            transition: all var(--transition-fast);
        }

        .nav-hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--c-charcoal);
            border-radius: 2px;
            transition: all var(--transition-med);
        }

        .nav-hamburger:hover span {
            background: var(--c-amber);
        }

        /* ===== Category Hero ===== */
        .category-hero {
            position: relative;
            padding-top: 160px;
            padding-bottom: 80px;
            background-color: var(--c-charcoal);
            background-image: linear-gradient(135deg, rgba(26, 26, 26, 0.95) 0%, rgba(46, 58, 58, 0.92) 100%);
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 60%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--c-amber);
        }

        .category-hero-inner {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(245, 158, 11, 0.12);
            border: 1px solid rgba(245, 158, 11, 0.3);
            color: var(--c-amber);
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
        }

        .category-hero h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--c-text-light);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .category-hero p {
            font-size: 18px;
            color: rgba(245, 239, 230, 0.75);
            line-height: 1.85;
            max-width: 680px;
        }

        /* ===== Headline Article ===== */
        .headline-card {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 0;
            background: #FFFFFF;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            border: 1px solid var(--c-border-subtle);
            transition: all var(--transition-med);
        }

        .headline-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .headline-image-wrapper {
            position: relative;
            min-height: 360px;
            background-image: url('/assets/images/coverpic/cover-2.webp');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: flex-end;
        }

        .headline-image-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(26, 26, 26, 0.85) 100%);
        }

        .headline-image-tag {
            position: relative;
            z-index: 2;
            display: inline-flex;
            margin: 20px;
            padding: 6px 16px;
            border-radius: 999px;
            background: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 13px;
        }

        .headline-content {
            padding: 40px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .headline-date {
            font-family: var(--font-mono);
            color: var(--c-amber);
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .headline-content h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.45;
            margin-bottom: 16px;
            color: var(--c-charcoal);
        }

        .headline-content .summary {
            font-size: 15px;
            color: var(--c-text-muted);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
            align-self: flex-start;
        }

        .btn-primary:hover {
            background-color: var(--c-amber-hover);
            color: var(--c-charcoal);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(245, 158, 11, 0.35);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(245, 158, 11, 0.25);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--c-amber);
            outline-offset: 2px;
        }

        /* ===== Article Grid ===== */
        .article-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .article-card {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            border: 1px solid var(--c-border-subtle);
            transition: all var(--transition-med);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .article-card-image {
            height: 220px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .article-card-image::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60%;
            background: linear-gradient(180deg, transparent 0%, rgba(26, 26, 26, 0.65) 100%);
        }

        .article-card-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            padding: 5px 14px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.9);
            color: var(--c-charcoal);
            font-size: 12px;
            font-weight: 600;
        }

        .article-card-content {
            padding: 24px 24px 28px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-card-date {
            font-family: var(--font-mono);
            color: var(--c-amber);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .article-card-content h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 10px;
            color: var(--c-charcoal);
        }

        .article-card-content .summary {
            font-size: 14px;
            color: var(--c-text-muted);
            line-height: 1.75;
            margin-bottom: 18px;
            flex: 1;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            background: transparent;
            border: 1px solid var(--c-border-light);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 13px;
            white-space: nowrap;
            transition: all var(--transition-fast);
            align-self: flex-start;
        }

        .btn-secondary:hover {
            background: var(--c-warm-bg);
            border-color: var(--c-amber);
            color: var(--c-amber);
            transform: translateY(-1px);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid var(--c-amber);
            outline-offset: 2px;
        }

        /* ===== Pagination ===== */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            margin-top: 48px;
        }

        .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: transparent;
            border: 1px solid var(--c-border-light);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 14px;
            transition: all var(--transition-fast);
        }

        .page-btn:hover {
            background: var(--c-warm-bg);
            border-color: var(--c-amber);
            color: var(--c-amber);
        }

        .page-btn.active {
            background: var(--c-amber);
            border-color: var(--c-amber);
            color: var(--c-charcoal);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
        }

        .page-btn:focus-visible {
            outline: 2px solid var(--c-amber);
            outline-offset: 2px;
        }

        /* ===== Newsletter CTA ===== */
        .newsletter-section {
            background: var(--c-charcoal);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }

        .newsletter-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.08);
            pointer-events: none;
        }

        .newsletter-section::after {
            content: '';
            position: absolute;
            bottom: -60%;
            left: 10%;
            width: 250px;
            height: 250px;
            border-radius: 50%;
            background: rgba(124, 92, 61, 0.15);
            pointer-events: none;
        }

        .newsletter-content {
            position: relative;
            z-index: 2;
            flex: 1;
            min-width: 280px;
        }

        .newsletter-content h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--c-text-light);
            margin-bottom: 8px;
        }

        .newsletter-content p {
            font-size: 15px;
            color: rgba(245, 239, 230, 0.7);
            line-height: 1.75;
        }

        .newsletter-form {
            position: relative;
            z-index: 2;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .newsletter-form input {
            flex: 1;
            min-width: 220px;
            padding: 12px 18px;
            border-radius: var(--radius-btn);
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(245, 239, 230, 0.25);
            color: var(--c-text-light);
            font-size: 14px;
            outline: none;
            transition: all var(--transition-fast);
        }

        .newsletter-form input::placeholder {
            color: rgba(245, 239, 230, 0.45);
        }

        .newsletter-form input:focus {
            border-color: var(--c-amber);
            background: rgba(255, 255, 255, 0.12);
            box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--c-charcoal);
            color: var(--c-text-light);
            padding-top: 64px;
            padding-bottom: 28px;
            border-top: 1px solid rgba(245, 158, 11, 0.2);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand h4 {
            font-size: 22px;
            font-weight: 700;
            color: var(--c-amber);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(245, 239, 230, 0.65);
            line-height: 1.8;
            max-width: 300px;
        }

        .footer-col h5 {
            font-size: 16px;
            font-weight: 700;
            color: var(--c-text-light);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(245, 239, 230, 0.7);
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-links a:hover {
            color: var(--c-amber);
            transform: translateX(3px);
        }

        .footer-contact-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-contact-list li {
            font-size: 14px;
            color: rgba(245, 239, 230, 0.7);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .fi-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: rgba(245, 158, 11, 0.12);
            color: var(--c-amber);
            font-size: 13px;
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(245, 239, 230, 0.15);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 12px;
            color: rgba(245, 239, 230, 0.55);
        }

        .footer-beian {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom a {
            color: rgba(245, 239, 230, 0.7);
            transition: color var(--transition-fast);
            font-size: 12px;
        }

        .footer-bottom a:hover {
            color: var(--c-amber);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .category-hero h1 {
                font-size: 36px;
            }
            .headline-card {
                grid-template-columns: 1fr;
            }
            .headline-image-wrapper {
                min-height: 260px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-right .nav-cta {
                display: none;
            }
            .article-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .headline-content {
                padding: 28px 24px;
            }
            .headline-content h2 {
                font-size: 22px;
            }
            .category-hero {
                padding-top: 130px;
                padding-bottom: 56px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .category-hero p {
                font-size: 15px;
            }
            .section-pad {
                padding-top: 64px;
                padding-bottom: 64px;
            }
            .newsletter-section {
                padding: 36px 24px;
                flex-direction: column;
                align-items: flex-start;
            }
            .newsletter-form {
                width: 100%;
            }
            .newsletter-form input {
                min-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .headline-content h2 {
                font-size: 19px;
            }
            .article-card-content h3 {
                font-size: 17px;
            }
            .headline-image-wrapper {
                min-height: 200px;
            }
            .pagination {
                gap: 6px;
            }
            .page-btn {
                width: 36px;
                height: 36px;
                font-size: 13px;
            }
        }

/* roulang page: category1 */
:root {
            --c-charcoal: #1A1A1A;
            --c-amber: #F59E0B;
            --c-amber-hover: #D97E00;
            --c-warm-bg: #FAF7F2;
            --c-copper: #7C5C3D;
            --c-teal-gray: #2E3A3A;
            --c-border-light: rgba(124, 92, 61, 0.18);
            --c-border-subtle: rgba(26, 26, 26, 0.08);
            --c-text-muted: #6B5D4F;
            --c-text-light: #F5EFE6;
            --c-glass-light: rgba(255, 255, 255, 0.65);
            --c-glass-dark: rgba(20, 20, 20, 0.55);
            --radius-card: 18px;
            --radius-btn: 10px;
            --radius-hero: 22px;
            --shadow-soft: 0 8px 24px rgba(26, 26, 26, 0.08);
            --shadow-hover: 0 14px 36px rgba(26, 26, 26, 0.14);
            --shadow-nav: 0 4px 20px rgba(26, 26, 26, 0.1);
            --font-cn: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-mono: 'SFMono-Regular', 'Menlo', 'Consolas', 'PingFang SC', monospace;
            --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-med: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            scroll-padding-top: 90px;
        }
        body {
            font-family: var(--font-cn);
            background-color: var(--c-warm-bg);
            color: var(--c-charcoal);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--c-amber);
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section-pad {
            padding-top: 96px;
            padding-bottom: 96px;
        }
        .section-pad-sm {
            padding-top: 64px;
            padding-bottom: 64px;
        }
        /* Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: var(--c-glass-light);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--c-border-light);
            box-shadow: 0 2px 16px rgba(26, 26, 26, 0.04);
            transition: all var(--transition-med);
        }
        .site-header.scrolled {
            background-color: rgba(250, 247, 242, 0.97);
            box-shadow: var(--shadow-nav);
            border-bottom-color: var(--c-border-light);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .nav-logo {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--c-charcoal);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: font-size var(--transition-med);
        }
        .nav-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--c-charcoal);
            color: var(--c-amber);
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 16px;
            letter-spacing: -0.5px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: var(--c-charcoal);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background-color: var(--c-amber);
            border-radius: 2px;
            transition: width var(--transition-med);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--c-amber);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
        }
        .nav-cta:hover {
            background-color: var(--c-amber-hover);
            color: var(--c-charcoal);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .nav-search-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: transparent;
            color: var(--c-charcoal);
            transition: all var(--transition-fast);
            border: 1px solid var(--c-border-light);
        }
        .nav-search-btn:hover {
            background: var(--c-warm-bg);
            color: var(--c-amber);
            border-color: var(--c-amber);
        }
        .nav-burger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            padding: 8px;
            border-radius: 10px;
            border: 1px solid var(--c-border-light);
            background: transparent;
            transition: all var(--transition-fast);
        }
        .nav-burger span {
            display: block;
            width: 100%;
            height: 2px;
            background: var(--c-charcoal);
            border-radius: 2px;
            transition: all var(--transition-med);
        }
        .nav-burger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-burger.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-burger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            position: absolute;
            top: 72px;
            left: 0;
            right: 0;
            background: rgba(250, 247, 242, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--c-border-light);
            padding: 16px 24px 24px;
            box-shadow: var(--shadow-nav);
            z-index: 999;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 17px;
            font-weight: 500;
            color: var(--c-charcoal);
            padding: 14px 12px;
            border-radius: 12px;
            transition: all var(--transition-fast);
            min-height: 44px;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--c-warm-bg);
            color: var(--c-amber);
        }
        /* Category hero */
        .cat-hero {
            padding-top: 140px;
            padding-bottom: 72px;
            background-color: var(--c-charcoal);
            background-image: linear-gradient(145deg, rgba(26, 26, 26, 0.92) 0%, rgba(46, 58, 58, 0.88) 60%, rgba(26, 26, 26, 0.94) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }
        .cat-hero::after {
            content: '';
            position: absolute;
            right: -80px;
            top: -80px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.08);
            pointer-events: none;
        }
        .cat-hero::before {
            content: '';
            position: absolute;
            left: -40px;
            bottom: -120px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.06);
            pointer-events: none;
        }
        .cat-hero .container {
            position: relative;
            z-index: 2;
        }
        .cat-hero h1 {
            font-size: 42px;
            font-weight: 700;
            color: var(--c-text-light);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .cat-hero p {
            font-size: 18px;
            color: rgba(245, 239, 230, 0.8);
            max-width: 680px;
            line-height: 1.85;
        }
        .cat-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(245, 239, 230, 0.6);
            margin-bottom: 20px;
        }
        .cat-breadcrumb a {
            color: rgba(245, 239, 230, 0.75);
            transition: color var(--transition-fast);
        }
        .cat-breadcrumb a:hover {
            color: var(--c-amber);
        }
        .cat-breadcrumb i {
            font-size: 10px;
        }
        /* Analysis layout */
        .analysis-layout {
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 48px;
            align-items: start;
        }
        .analysis-toc {
            position: sticky;
            top: 100px;
            background: #fff;
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-soft);
            border: 1px solid var(--c-border-subtle);
        }
        .analysis-toc h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--c-charcoal);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .analysis-toc h3 i {
            color: var(--c-amber);
            font-size: 16px;
        }
        .analysis-toc ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .analysis-toc a {
            display: block;
            padding: 10px 12px;
            font-size: 14px;
            color: var(--c-text-muted);
            border-radius: 8px;
            transition: all var(--transition-fast);
            border-left: 3px solid transparent;
            line-height: 1.5;
        }
        .analysis-toc a:hover {
            background: var(--c-warm-bg);
            color: var(--c-charcoal);
            border-left-color: var(--c-amber);
        }
        .analysis-toc a.active-toc {
            background: var(--c-warm-bg);
            color: var(--c-amber);
            border-left-color: var(--c-amber);
            font-weight: 600;
        }
        .analysis-article {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 48px 56px;
            box-shadow: var(--shadow-soft);
            border: 1px solid var(--c-border-subtle);
        }
        .analysis-article h2 {
            font-size: 28px;
            font-weight: 700;
            margin-top: 40px;
            margin-bottom: 16px;
            color: var(--c-charcoal);
            padding-bottom: 12px;
            border-bottom: 2px solid var(--c-warm-bg);
            position: relative;
        }
        .analysis-article h2:first-child {
            margin-top: 0;
        }
        .analysis-article h2::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 60px;
            height: 2px;
            background: var(--c-amber);
            border-radius: 2px;
        }
        .analysis-article h3 {
            font-size: 20px;
            font-weight: 600;
            margin-top: 32px;
            margin-bottom: 12px;
            color: var(--c-teal-gray);
        }
        .analysis-article p {
            font-size: 16px;
            line-height: 1.9;
            color: #3D3D3D;
            margin-bottom: 16px;
        }
        .analysis-article img {
            border-radius: 14px;
            margin: 24px 0;
            box-shadow: var(--shadow-soft);
        }
        .analysis-article .img-caption {
            font-size: 13px;
            color: var(--c-text-muted);
            text-align: center;
            margin-top: -16px;
            margin-bottom: 24px;
        }
        .analysis-article blockquote {
            background: var(--c-warm-bg);
            border-left: 4px solid var(--c-amber);
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            font-size: 15px;
            color: var(--c-teal-gray);
            line-height: 1.85;
        }
        .analysis-article ul {
            margin: 16px 0;
            padding-left: 24px;
        }
        .analysis-article ul li {
            margin-bottom: 8px;
            line-height: 1.8;
            color: #3D3D3D;
            position: relative;
            padding-left: 8px;
        }
        .analysis-article ul li::before {
            content: '';
            position: absolute;
            left: -16px;
            top: 10px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--c-amber);
        }
        .method-step {
            display: flex;
            gap: 16px;
            margin: 20px 0;
            padding: 20px;
            background: var(--c-warm-bg);
            border-radius: 12px;
            border: 1px solid var(--c-border-subtle);
        }
        .method-step .step-number {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--c-amber);
            color: var(--c-charcoal);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            font-family: var(--font-mono);
        }
        .method-step .step-content h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--c-charcoal);
        }
        .method-step .step-content p {
            font-size: 14px;
            color: var(--c-text-muted);
            margin-bottom: 0;
            line-height: 1.7;
        }
        /* CTA banner */
        .cta-banner {
            background: var(--c-charcoal);
            border-radius: var(--radius-card);
            padding: 48px 56px;
            margin-top: 48px;
            background-image: linear-gradient(135deg, rgba(26, 26, 26, 0.95) 0%, rgba(46, 58, 58, 0.9) 100%);
            border: 1px solid rgba(245, 158, 11, 0.15);
            text-align: center;
        }
        .cta-banner h3 {
            font-size: 26px;
            font-weight: 700;
            color: var(--c-text-light);
            margin-bottom: 12px;
        }
        .cta-banner p {
            font-size: 16px;
            color: rgba(245, 239, 230, 0.75);
            margin-bottom: 24px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-banner .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
        }
        .btn-primary:hover {
            background-color: var(--c-amber-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            color: var(--c-charcoal);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            background: transparent;
            border: 1px solid rgba(245, 239, 230, 0.4);
            color: var(--c-text-light);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition-fast);
        }
        .btn-secondary:hover {
            background: rgba(245, 239, 230, 0.1);
            border-color: var(--c-amber);
            color: var(--c-amber);
            transform: translateY(-2px);
        }
        /* Footer */
        .site-footer {
            background: var(--c-charcoal);
            color: rgba(245, 239, 230, 0.8);
            padding-top: 72px;
            padding-bottom: 24px;
            margin-top: 96px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(245, 239, 230, 0.1);
        }
        .footer-brand h4 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(245, 239, 230, 0.6);
            max-width: 280px;
        }
        .footer-col h5 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(245, 239, 230, 0.65);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--c-amber);
        }
        .footer-contact-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-contact-list li {
            font-size: 14px;
            color: rgba(245, 239, 230, 0.65);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .fi-icon {
            color: var(--c-amber);
            font-style: normal;
            flex-shrink: 0;
        }
        .footer-bottom {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
            padding-top: 24px;
            font-size: 12px;
            color: rgba(245, 239, 230, 0.45);
            text-align: center;
        }
        .footer-beian {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .footer-bottom a {
            color: rgba(245, 239, 230, 0.55);
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: var(--c-amber);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .analysis-layout {
                grid-template-columns: 220px 1fr;
                gap: 32px;
            }
            .analysis-article {
                padding: 36px 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-burger {
                display: flex;
            }
            .nav-right .nav-cta {
                display: none;
            }
            .cat-hero h1 {
                font-size: 32px;
            }
            .cat-hero {
                padding-top: 120px;
                padding-bottom: 56px;
            }
            .analysis-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .analysis-toc {
                position: static;
                order: -1;
            }
            .analysis-article {
                padding: 28px 20px;
            }
            .analysis-article h2 {
                font-size: 24px;
            }
            .cta-banner {
                padding: 32px 24px;
            }
            .cta-banner h3 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .section-pad {
                padding-top: 64px;
                padding-bottom: 64px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .cat-hero h1 {
                font-size: 28px;
            }
            .cat-hero p {
                font-size: 15px;
            }
            .analysis-article {
                padding: 24px 16px;
                border-radius: 14px;
            }
            .analysis-article h2 {
                font-size: 22px;
            }
            .analysis-article p {
                font-size: 15px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 24px;
                font-size: 14px;
            }
            .method-step {
                flex-direction: column;
                gap: 10px;
            }
        }

/* roulang page: category3 */
:root {
            --c-charcoal: #1A1A1A;
            --c-amber: #F59E0B;
            --c-amber-hover: #D97E00;
            --c-warm-bg: #FAF7F2;
            --c-copper: #7C5C3D;
            --c-teal-gray: #2E3A3A;
            --c-border-light: rgba(124, 92, 61, 0.18);
            --c-border-subtle: rgba(26, 26, 26, 0.08);
            --c-text-muted: #6B5D4F;
            --c-text-light: #F5EFE6;
            --c-glass-light: rgba(255, 255, 255, 0.65);
            --c-glass-dark: rgba(20, 20, 20, 0.55);
            --radius-card: 18px;
            --radius-btn: 10px;
            --radius-hero: 22px;
            --shadow-soft: 0 8px 24px rgba(26, 26, 26, 0.08);
            --shadow-hover: 0 14px 36px rgba(26, 26, 26, 0.14);
            --shadow-nav: 0 4px 20px rgba(26, 26, 26, 0.1);
            --font-cn: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-mono: 'SFMono-Regular', 'Menlo', 'Consolas', 'PingFang SC', monospace;
            --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-med: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-cn);
            background-color: var(--c-warm-bg);
            color: var(--c-charcoal);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--c-amber);
        }

        img {
            max-width: 100%;
            display: block;
            height: auto;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-pad {
            padding-top: 72px;
            padding-bottom: 72px;
        }
        .section-pad-sm {
            padding-top: 48px;
            padding-bottom: 48px;
        }

        /* ===== Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: var(--c-glass-light);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--c-border-light);
            box-shadow: 0 2px 16px rgba(26, 26, 26, 0.04);
            transition: all var(--transition-med);
        }
        .site-header.scrolled {
            background-color: rgba(250, 247, 242, 0.95);
            box-shadow: var(--shadow-nav);
            border-bottom-color: var(--c-border-light);
        }
        .site-header.scrolled .nav-logo {
            font-size: 22px;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .nav-logo {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--c-charcoal);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: font-size var(--transition-med);
        }
        .nav-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--c-charcoal);
            color: var(--c-amber);
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 16px;
            letter-spacing: -0.5px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--c-charcoal);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background-color: var(--c-amber);
            border-radius: 2px;
            transition: width var(--transition-med);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--c-amber);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
        }
        .nav-cta:hover {
            background-color: var(--c-amber-hover);
            color: var(--c-charcoal);
            transform: translateY(-2px);
        }
        .nav-cta:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(245, 158, 11, 0.2);
        }
        .nav-search {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--c-border-light);
            color: var(--c-text-muted);
            font-size: 16px;
            transition: all var(--transition-fast);
            background: transparent;
        }
        .nav-search:hover {
            border-color: var(--c-amber);
            color: var(--c-amber);
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            padding: 10px;
            border-radius: 10px;
            border: 1px solid var(--c-border-light);
            background: transparent;
            transition: all var(--transition-fast);
        }
        .nav-hamburger span {
            display: block;
            width: 100%;
            height: 2px;
            background-color: var(--c-charcoal);
            border-radius: 2px;
            transition: all var(--transition-med);
        }
        .nav-hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Mobile nav panel ===== */
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            z-index: 999;
            background-color: rgba(250, 247, 242, 0.97);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--c-border-light);
            box-shadow: var(--shadow-nav);
            padding: 20px 24px 32px;
        }
        .mobile-nav-panel.open {
            display: block;
        }
        .mobile-nav-panel .mobile-nav-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
        }
        .mobile-nav-panel .mobile-nav-links li {
            border-bottom: 1px solid var(--c-border-subtle);
        }
        .mobile-nav-panel .mobile-nav-links li:last-child {
            border-bottom: none;
        }
        .mobile-nav-panel .mobile-nav-links a {
            display: block;
            padding: 14px 4px;
            font-size: 16px;
            font-weight: 500;
            color: var(--c-charcoal);
            transition: all var(--transition-fast);
        }
        .mobile-nav-panel .mobile-nav-links a:hover,
        .mobile-nav-panel .mobile-nav-links a.active {
            color: var(--c-amber);
            padding-left: 12px;
        }
        .mobile-nav-cta {
            display: block;
            margin-top: 16px;
            padding: 14px 24px;
            border-radius: var(--radius-btn);
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            text-align: center;
            transition: all var(--transition-fast);
        }
        .mobile-nav-cta:hover {
            background-color: var(--c-amber-hover);
            color: var(--c-charcoal);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            background-color: var(--c-charcoal);
            color: var(--c-text-light);
            padding-top: 140px;
            padding-bottom: 70px;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.12);
            pointer-events: none;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.08);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(245, 239, 230, 0.7);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(245, 239, 230, 0.7);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--c-amber);
        }
        .breadcrumb .sep {
            color: rgba(245, 239, 230, 0.4);
        }
        .breadcrumb .current {
            color: var(--c-amber);
            font-weight: 500;
        }
        .page-hero h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.25;
            margin: 0 0 16px;
            color: #fff;
        }
        .page-hero .hero-sub {
            font-size: 17px;
            color: rgba(245, 239, 230, 0.82);
            max-width: 620px;
            line-height: 1.7;
            margin: 0 0 24px;
        }
        .hero-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 13px;
            color: rgba(245, 239, 230, 0.6);
            flex-wrap: wrap;
        }
        .hero-meta .meta-dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--c-amber);
            display: inline-block;
        }

        /* ===== Article layout ===== */
        .article-layout {
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 48px;
            align-items: start;
        }
        .article-toc {
            position: sticky;
            top: 100px;
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--c-border-light);
            padding: 24px 20px;
            box-shadow: var(--shadow-soft);
        }
        .article-toc h3 {
            font-size: 15px;
            font-weight: 700;
            color: var(--c-charcoal);
            margin: 0 0 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .article-toc h3::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 16px;
            border-radius: 2px;
            background: var(--c-amber);
        }
        .article-toc ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .article-toc ul a {
            display: block;
            padding: 8px 10px;
            border-radius: 8px;
            font-size: 14px;
            color: var(--c-text-muted);
            transition: all var(--transition-fast);
            border-left: 2px solid transparent;
        }
        .article-toc ul a:hover {
            color: var(--c-charcoal);
            background: var(--c-warm-bg);
            border-left-color: var(--c-amber);
        }
        .article-toc ul a.toc-active {
            color: var(--c-charcoal);
            background: var(--c-warm-bg);
            border-left-color: var(--c-amber);
            font-weight: 600;
        }

        .article-body {
            background: #fff;
            border-radius: var(--radius-hero);
            border: 1px solid var(--c-border-light);
            padding: 40px 44px;
            box-shadow: var(--shadow-soft);
        }
        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--c-charcoal);
            margin: 36px 0 16px;
            line-height: 1.35;
            scroll-margin-top: 100px;
        }
        .article-body h2:first-child {
            margin-top: 0;
        }
        .article-body h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--c-charcoal);
            margin: 24px 0 12px;
            line-height: 1.4;
        }
        .article-body p {
            font-size: 16px;
            color: #3D342C;
            line-height: 1.85;
            margin: 0 0 16px;
        }
        .article-body .lead-para {
            font-size: 18px;
            color: var(--c-teal-gray);
            line-height: 1.8;
            margin-bottom: 24px;
            padding-bottom: 20px;
            border-bottom: 2px solid var(--c-warm-bg);
        }
        .article-body .article-img-block {
            margin: 28px 0;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            position: relative;
        }
        .article-body .article-img-block img {
            width: 100%;
            height: auto;
            display: block;
            aspect-ratio: 16/8;
            object-fit: cover;
        }
        .article-body .img-caption {
            font-size: 13px;
            color: var(--c-text-muted);
            text-align: center;
            padding: 10px 0 4px;
            background: #fff;
        }
        .article-body blockquote {
            margin: 20px 0;
            padding: 16px 20px;
            background: var(--c-warm-bg);
            border-left: 4px solid var(--c-amber);
            border-radius: 8px;
            font-style: italic;
            color: var(--c-teal-gray);
        }
        .article-body .highlight-box {
            background: var(--c-warm-bg);
            border-radius: 12px;
            padding: 18px 20px;
            margin: 20px 0;
            border: 1px solid var(--c-border-light);
        }
        .article-body .highlight-box strong {
            color: var(--c-amber);
        }
        .article-body ul.data-list {
            list-style: none;
            padding: 0;
            margin: 16px 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .article-body ul.data-list li {
            padding: 10px 16px;
            background: var(--c-warm-bg);
            border-radius: 8px;
            font-size: 15px;
            color: #3D342C;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .article-body ul.data-list li::before {
            content: '▸';
            color: var(--c-amber);
            font-size: 16px;
            flex-shrink: 0;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--c-charcoal);
            padding: 48px 0;
            margin-top: 56px;
            border-radius: var(--radius-hero);
            position: relative;
            overflow: hidden;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            top: -40px;
            right: -30px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.15);
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .cta-text h3 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 8px;
        }
        .cta-text p {
            font-size: 15px;
            color: rgba(245, 239, 230, 0.75);
            margin: 0;
            max-width: 520px;
            line-height: 1.7;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 6px 18px rgba(245, 158, 11, 0.3);
        }
        .cta-btn:hover {
            background-color: var(--c-amber-hover);
            color: var(--c-charcoal);
            transform: translateY(-2px);
        }
        .cta-btn:active {
            transform: translateY(0);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--c-charcoal);
            color: var(--c-text-light);
            padding: 56px 0 28px;
            margin-top: 48px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand h4 {
            font-size: 22px;
            font-weight: 700;
            margin: 0 0 10px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand h4 .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--c-amber);
            color: var(--c-charcoal);
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(245, 239, 230, 0.7);
            line-height: 1.7;
            margin: 0;
            max-width: 280px;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 16px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(245, 239, 230, 0.7);
            transition: all var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--c-amber);
            padding-left: 4px;
        }
        .footer-contact-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-contact-list li {
            font-size: 14px;
            color: rgba(245, 239, 230, 0.7);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .fi-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: rgba(245, 158, 11, 0.15);
            color: var(--c-amber);
            font-size: 13px;
            flex-shrink: 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(245, 239, 230, 0.15);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: rgba(245, 239, 230, 0.5);
        }
        .footer-beian {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-bottom a {
            color: rgba(245, 239, 230, 0.5);
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: var(--c-amber);
        }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: var(--radius-btn);
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 14px;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
        }
        .btn-primary:hover {
            background-color: var(--c-amber-hover);
            color: var(--c-charcoal);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(217, 126, 0, 0.3);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: var(--radius-btn);
            background: transparent;
            border: 1px solid var(--c-charcoal);
            color: var(--c-charcoal);
            font-weight: 500;
            font-size: 14px;
            transition: all var(--transition-fast);
        }
        .btn-secondary:hover {
            background: var(--c-warm-bg);
            border-color: var(--c-amber);
            color: var(--c-amber);
        }
        .btn-secondary:focus,
        .btn-primary:focus {
            outline: 2px solid var(--c-amber);
            outline-offset: 2px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 220px 1fr;
                gap: 28px;
            }
            .article-body {
                padding: 28px 28px;
            }
            .page-hero h1 {
                font-size: 36px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 820px) {
            .nav-links {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-right .nav-search {
                display: none;
            }
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-toc {
                position: relative;
                top: 0;
            }
            .article-toc ul {
                display: flex;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 6px;
            }
            .article-toc ul a {
                padding: 6px 12px;
                font-size: 13px;
                border-left: none;
                border-radius: 20px;
                background: var(--c-warm-bg);
            }
            .article-toc ul a:hover,
            .article-toc ul a.toc-active {
                border-left: none;
                background: var(--c-amber);
                color: var(--c-charcoal);
            }
            .page-hero {
                padding-top: 120px;
                padding-bottom: 50px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .cta-inner {
                flex-direction: column;
                text-align: center;
            }
            .cta-text p {
                margin: 0 auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero .hero-sub {
                font-size: 15px;
            }
            .article-body {
                padding: 20px 18px;
                border-radius: 14px;
            }
            .article-body h2 {
                font-size: 22px;
            }
            .article-body p {
                font-size: 15px;
            }
            .article-body .lead-para {
                font-size: 16px;
            }
            .nav-cta {
                display: none;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-beian {
                justify-content: center;
            }
        }

/* roulang page: category4 */
:root {
            --c-charcoal: #1A1A1A;
            --c-amber: #F59E0B;
            --c-amber-hover: #D97E00;
            --c-warm-bg: #FAF7F2;
            --c-copper: #7C5C3D;
            --c-teal-gray: #2E3A3A;
            --c-border-light: rgba(124, 92, 61, 0.18);
            --c-border-subtle: rgba(26, 26, 26, 0.08);
            --c-text-muted: #6B5D4F;
            --c-text-light: #F5EFE6;
            --c-glass-light: rgba(255, 255, 255, 0.65);
            --c-glass-dark: rgba(20, 20, 20, 0.55);
            --radius-card: 18px;
            --radius-btn: 10px;
            --radius-hero: 22px;
            --shadow-soft: 0 8px 24px rgba(26, 26, 26, 0.08);
            --shadow-hover: 0 14px 36px rgba(26, 26, 26, 0.14);
            --shadow-nav: 0 4px 20px rgba(26, 26, 26, 0.1);
            --font-cn: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-mono: 'SFMono-Regular', 'Menlo', 'Consolas', 'PingFang SC', monospace;
            --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-med: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-cn);
            background-color: var(--c-warm-bg);
            color: var(--c-charcoal);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--c-amber);
        }

        img {
            max-width: 100%;
            display: block;
            height: auto;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-pad {
            padding-top: 96px;
            padding-bottom: 96px;
        }

        .section-pad-sm {
            padding-top: 64px;
            padding-bottom: 64px;
        }

        /* ===== Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: var(--c-glass-light);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--c-border-light);
            box-shadow: 0 2px 16px rgba(26, 26, 26, 0.04);
            transition: all var(--transition-med);
        }

        .site-header.scrolled {
            background-color: rgba(250, 247, 242, 0.95);
            box-shadow: var(--shadow-nav);
            border-bottom-color: var(--c-border-light);
        }

        .site-header.scrolled .nav-logo {
            font-size: 22px;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .nav-logo {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--c-charcoal);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: font-size var(--transition-med);
        }

        .nav-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--c-charcoal);
            color: var(--c-amber);
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 16px;
            letter-spacing: -0.5px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--c-charcoal);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background-color: var(--c-amber);
            border-radius: 2px;
            transition: width var(--transition-med);
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--c-amber);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
        }

        .nav-cta:hover {
            background-color: var(--c-amber-hover);
            color: var(--c-charcoal);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(245, 158, 11, 0.35);
        }

        .nav-search-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid var(--c-border-light);
            color: var(--c-charcoal);
            font-size: 18px;
            transition: all var(--transition-fast);
            background: transparent;
        }

        .nav-search-icon:hover {
            background: var(--c-warm-bg);
            border-color: var(--c-amber);
            color: var(--c-amber);
        }

        .nav-burger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--c-border-light);
            background: transparent;
            transition: all var(--transition-fast);
        }

        .nav-burger:hover {
            border-color: var(--c-amber);
            background: var(--c-warm-bg);
        }

        .nav-burger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--c-charcoal);
            border-radius: 2px;
            transition: all var(--transition-med);
        }

        .nav-burger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-burger.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-burger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(250, 247, 242, 0.98);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            z-index: 999;
            padding: 32px 24px;
            overflow-y: auto;
            transform: translateY(-100%);
            transition: transform var(--transition-med);
        }

        .mobile-menu.open {
            transform: translateY(0);
        }

        .mobile-menu a {
            display: block;
            padding: 16px 8px;
            font-size: 16px;
            font-weight: 500;
            color: var(--c-charcoal);
            border-bottom: 1px solid var(--c-border-light);
            transition: all var(--transition-fast);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--c-amber);
            padding-left: 16px;
        }

        .mobile-menu .mobile-cta {
            display: block;
            margin-top: 20px;
            text-align: center;
            padding: 16px;
            border-radius: var(--radius-btn);
            background: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            border-bottom: none;
        }

        .mobile-menu .mobile-cta:hover {
            background: var(--c-amber-hover);
            color: var(--c-charcoal);
            padding-left: 16px;
        }

        /* ===== Hero ===== */
        .hero-historical {
            position: relative;
            padding-top: 140px;
            padding-bottom: 80px;
            background-color: var(--c-charcoal);
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .hero-historical::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 26, 0.92) 0%, rgba(46, 58, 58, 0.85) 50%, rgba(26, 26, 26, 0.9) 100%);
            z-index: 1;
        }

        .hero-historical .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            border-radius: 100px;
            background: rgba(245, 158, 11, 0.18);
            border: 1px solid rgba(245, 158, 11, 0.35);
            color: var(--c-amber);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: 44px;
            font-weight: 700;
            color: var(--c-text-light);
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .hero-title .highlight {
            color: var(--c-amber);
            font-family: var(--font-mono);
        }

        .hero-sub {
            font-size: 17px;
            color: rgba(245, 239, 230, 0.78);
            max-width: 620px;
            line-height: 1.85;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
        }

        .btn-primary:hover {
            background-color: var(--c-amber-hover);
            color: var(--c-charcoal);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(245, 158, 11, 0.4);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--c-amber);
            outline-offset: 2px;
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            background: transparent;
            border: 1px solid rgba(245, 239, 230, 0.35);
            color: var(--c-text-light);
            font-weight: 500;
            font-size: 16px;
            transition: all var(--transition-fast);
        }

        .btn-secondary:hover {
            background: rgba(245, 239, 230, 0.08);
            border-color: rgba(245, 239, 230, 0.55);
            color: var(--c-amber);
            transform: translateY(-2px);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid var(--c-amber);
            outline-offset: 2px;
        }

        /* ===== Stats Cards ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .stat-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 28px 24px;
            border: 1px solid var(--c-border-light);
            box-shadow: var(--shadow-soft);
            transition: all var(--transition-med);
            text-align: center;
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(245, 158, 11, 0.35);
        }

        .stat-value {
            font-family: var(--font-mono);
            font-size: 36px;
            font-weight: 700;
            color: var(--c-amber);
            line-height: 1.2;
            margin-bottom: 8px;
            letter-spacing: -0.5px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--c-text-muted);
            font-weight: 500;
        }

        /* ===== Timeline ===== */
        .timeline-wrapper {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
            padding: 40px 0;
        }

        .timeline-wrapper::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            width: 2px;
            background: linear-gradient(to bottom, transparent, var(--c-copper) 8%, var(--c-copper) 92%, transparent);
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 56px;
            width: 100%;
            display: flex;
            align-items: flex-start;
        }

        .timeline-item:nth-child(odd) {
            justify-content: flex-start;
            padding-right: 52%;
        }

        .timeline-item:nth-child(even) {
            justify-content: flex-end;
            padding-left: 52%;
        }

        .timeline-node {
            position: absolute;
            left: 50%;
            top: 0;
            transform: translateX(-50%);
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--c-amber);
            border: 3px solid #fff;
            box-shadow: 0 0 0 3px var(--c-copper), 0 4px 12px rgba(26, 26, 26, 0.15);
            z-index: 2;
        }

        .timeline-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 28px 28px;
            border: 1px solid var(--c-border-light);
            box-shadow: var(--shadow-soft);
            transition: all var(--transition-med);
            width: 100%;
        }

        .timeline-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(245, 158, 11, 0.3);
            transform: translateY(-2px);
        }

        .timeline-date {
            display: inline-block;
            font-family: var(--font-mono);
            font-size: 20px;
            font-weight: 700;
            color: var(--c-amber);
            margin-bottom: 10px;
            letter-spacing: -0.5px;
        }

        .timeline-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--c-charcoal);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .timeline-card p {
            font-size: 15px;
            color: var(--c-text-muted);
            line-height: 1.85;
            margin-bottom: 12px;
        }

        .timeline-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .timeline-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(245, 158, 11, 0.12);
            color: var(--c-copper);
            border: 1px solid rgba(245, 158, 11, 0.25);
        }

        /* ===== Data Insight Section ===== */
        .insight-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 32px 28px;
            border: 1px solid var(--c-border-light);
            box-shadow: var(--shadow-soft);
            transition: all var(--transition-med);
            height: 100%;
        }

        .insight-card:hover {
            shadow: var(--shadow-hover);
            border-color: rgba(245, 158, 11, 0.3);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .insight-card .insight-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--c-charcoal);
            color: var(--c-amber);
            font-size: 20px;
            margin-bottom: 16px;
        }

        .insight-card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--c-charcoal);
            margin-bottom: 10px;
        }

        .insight-card p {
            font-size: 15px;
            color: var(--c-text-muted);
            line-height: 1.85;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border-radius: 14px;
            border: 1px solid var(--c-border-light);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(245, 158, 11, 0.3);
            box-shadow: 0 4px 16px rgba(26, 26, 26, 0.05);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--c-charcoal);
            gap: 16px;
            transition: all var(--transition-fast);
            background: transparent;
            width: 100%;
            text-align: left;
        }

        .faq-question:hover {
            color: var(--c-amber);
        }

        .faq-question:focus-visible {
            outline: 2px solid var(--c-amber);
            outline-offset: -2px;
            border-radius: 14px;
        }

        .faq-arrow {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--c-warm-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--c-copper);
            transition: transform var(--transition-med);
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            background: var(--c-amber);
            color: var(--c-charcoal);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-med), padding var(--transition-med);
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 22px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--c-text-muted);
            line-height: 1.85;
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            background: var(--c-charcoal);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 24px;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.12);
            pointer-events: none;
        }

        .cta-banner-content {
            position: relative;
            z-index: 1;
            flex: 1;
            min-width: 260px;
        }

        .cta-banner h3 {
            font-size: 26px;
            font-weight: 700;
            color: var(--c-text-light);
            margin-bottom: 10px;
        }

        .cta-banner p {
            font-size: 15px;
            color: rgba(245, 239, 230, 0.75);
            line-height: 1.8;
            margin-bottom: 0;
        }

        .cta-banner .btn-primary {
            position: relative;
            z-index: 1;
            flex-shrink: 0;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--c-charcoal);
            color: rgba(245, 239, 230, 0.75);
            padding: 60px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }

        .footer-brand h4 {
            font-size: 22px;
            font-weight: 700;
            color: var(--c-text-light);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(245, 239, 230, 0.6);
            max-width: 320px;
        }

        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            color: var(--c-text-light);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a,
        .footer-contact-list li {
            font-size: 14px;
            color: rgba(245, 239, 230, 0.65);
            transition: all var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--c-amber);
            padding-left: 4px;
        }

        .footer-contact-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-contact-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.7;
        }

        .fi-icon {
            flex-shrink: 0;
            color: var(--c-amber);
            font-style: normal;
            font-size: 15px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid rgba(245, 239, 230, 0.12);
            font-size: 13px;
            color: rgba(245, 239, 230, 0.5);
        }

        .footer-beian {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom a {
            color: rgba(245, 239, 230, 0.5);
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--c-amber);
        }

        /* ===== Section titles ===== */
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--c-copper);
            letter-spacing: 1.5px;
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--c-amber);
            border-radius: 2px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--c-charcoal);
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--c-text-muted);
            line-height: 1.85;
            max-width: 700px;
            margin-bottom: 40px;
        }

        .section-head-center {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-head-center .section-label::before {
            display: none;
        }

        .section-head-center .section-label::after {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--c-amber);
            border-radius: 2px;
        }

        .section-head-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 36px;
            }
            .section-title {
                font-size: 28px;
            }
            .timeline-item:nth-child(odd) {
                padding-right: 45%;
            }
            .timeline-item:nth-child(even) {
                padding-left: 45%;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-search-icon {
                display: none;
            }
            .nav-burger {
                display: flex;
            }
            .mobile-menu {
                display: block;
            }
            .hero-historical {
                padding-top: 110px;
                padding-bottom: 60px;
            }
            .hero-title {
                font-size: 32px;
            }
            .section-pad {
                padding-top: 64px;
                padding-bottom: 64px;
            }
            .section-title {
                font-size: 26px;
            }
            .timeline-wrapper::before {
                left: 18px;
            }
            .timeline-item:nth-child(odd),
            .timeline-item:nth-child(even) {
                padding-left: 52px;
                padding-right: 0;
                justify-content: flex-start;
            }
            .timeline-node {
                left: 18px;
                transform: translateX(-50%);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }
            .cta-banner {
                padding: 32px 24px;
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-banner h3 {
                font-size: 22px;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                text-align: center;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stat-value {
                font-size: 28px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .section-title {
                font-size: 22px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .timeline-wrapper::before {
                left: 14px;
            }
            .timeline-item:nth-child(odd),
            .timeline-item:nth-child(even) {
                padding-left: 44px;
            }
            .timeline-node {
                left: 14px;
            }
            .timeline-card {
                padding: 20px 16px;
            }
            .timeline-date {
                font-size: 17px;
            }
            .timeline-card h3 {
                font-size: 17px;
            }
        }

/* roulang page: category5 */
:root {
            --c-charcoal: #1A1A1A;
            --c-amber: #F59E0B;
            --c-amber-hover: #D97E00;
            --c-warm-bg: #FAF7F2;
            --c-copper: #7C5C3D;
            --c-teal-gray: #2E3A3A;
            --c-border-light: rgba(124, 92, 61, 0.18);
            --c-border-subtle: rgba(26, 26, 26, 0.08);
            --c-text-muted: #6B5D4F;
            --c-text-light: #F5EFE6;
            --c-glass-light: rgba(255, 255, 255, 0.65);
            --c-glass-dark: rgba(20, 20, 20, 0.55);
            --radius-card: 18px;
            --radius-btn: 10px;
            --radius-hero: 22px;
            --shadow-soft: 0 8px 24px rgba(26, 26, 26, 0.08);
            --shadow-hover: 0 14px 36px rgba(26, 26, 26, 0.14);
            --shadow-nav: 0 4px 20px rgba(26, 26, 26, 0.1);
            --font-cn: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-mono: 'SFMono-Regular', 'Menlo', 'Consolas', 'PingFang SC', monospace;
            --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-med: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-cn);
            background-color: var(--c-warm-bg);
            color: var(--c-charcoal);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover { color: var(--c-amber); }

        img {
            max-width: 100%;
            display: block;
            height: auto;
        }

        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button { cursor: pointer; border: none; background: none; }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-pad {
            padding-top: 96px;
            padding-bottom: 96px;
        }
        .section-pad-sm {
            padding-top: 64px;
            padding-bottom: 64px;
        }

        /* ===== Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: var(--c-glass-light);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--c-border-light);
            box-shadow: 0 2px 16px rgba(26, 26, 26, 0.04);
            transition: all var(--transition-med);
        }
        .site-header.scrolled {
            background-color: rgba(250, 247, 242, 0.95);
            box-shadow: var(--shadow-nav);
            border-bottom-color: var(--c-border-light);
        }
        .site-header.scrolled .nav-logo { font-size: 22px; }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .nav-logo {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--c-charcoal);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: font-size var(--transition-med);
        }
        .nav-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--c-charcoal);
            color: var(--c-amber);
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 16px;
            letter-spacing: -0.5px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--c-charcoal);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background-color: var(--c-amber);
            border-radius: 2px;
            transition: width var(--transition-med);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after { width: 100%; }
        .nav-links a:hover,
        .nav-links a.active { color: var(--c-amber); }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
        }
        .nav-cta:hover {
            background-color: var(--c-amber-hover);
            color: var(--c-charcoal);
            transform: translateY(-2px);
            box-shadow: 0 8px 18px rgba(245, 158, 11, 0.3);
        }
        .nav-search-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 1px solid var(--c-border-light);
            background: rgba(255, 255, 255, 0.45);
            color: var(--c-charcoal);
            font-size: 15px;
            transition: all var(--transition-fast);
        }
        .nav-search-icon:hover {
            background: rgba(255, 255, 255, 0.8);
            color: var(--c-amber);
            border-color: var(--c-amber);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            border: 1px solid var(--c-border-light);
            background: rgba(255, 255, 255, 0.55);
            transition: all var(--transition-fast);
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--c-charcoal);
            border-radius: 2px;
            transition: all var(--transition-med);
        }
        .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .nav-toggle.open span:nth-child(2) { opacity: 0; }
        .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background-color: rgba(250, 247, 242, 0.97);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--c-border-light);
            box-shadow: var(--shadow-nav);
            padding: 20px 24px 32px;
            z-index: 999;
            transform: translateY(-8px);
            opacity: 0;
            transition: all var(--transition-med);
            pointer-events: none;
        }
        .mobile-nav-panel.open {
            display: block;
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-nav-panel ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-nav-panel a {
            display: block;
            padding: 14px 16px;
            font-size: 16px;
            font-weight: 500;
            border-radius: 10px;
            color: var(--c-charcoal);
            transition: all var(--transition-fast);
        }
        .mobile-nav-panel a:hover,
        .mobile-nav-panel a.active {
            background-color: rgba(245, 158, 11, 0.1);
            color: var(--c-amber);
        }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
        }
        .btn-primary:hover {
            background-color: var(--c-amber-hover);
            color: var(--c-charcoal);
            transform: translateY(-2px);
            box-shadow: 0 8px 18px rgba(245, 158, 11, 0.32);
        }
        .btn-primary:active { transform: translateY(1px); box-shadow: none; }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 13px 30px;
            border-radius: var(--radius-btn);
            background-color: transparent;
            color: var(--c-charcoal);
            border: 1px solid var(--c-charcoal);
            font-weight: 500;
            font-size: 15px;
            transition: all var(--transition-fast);
        }
        .btn-secondary:hover {
            background-color: rgba(26, 26, 26, 0.05);
            color: var(--c-charcoal);
            border-color: var(--c-copper);
        }
        .btn-secondary:focus,
        .btn-primary:focus {
            outline: 2px solid var(--c-amber);
            outline-offset: 2px;
        }
        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
            color: var(--c-charcoal);
            position: relative;
            transition: color var(--transition-fast);
        }
        .text-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -3px;
            width: 0;
            height: 1.5px;
            background-color: var(--c-amber);
            transition: width var(--transition-med);
        }
        .text-link:hover { color: var(--c-amber); }
        .text-link:hover::after { width: 100%; }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 5px 14px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 500;
            background-color: rgba(245, 158, 11, 0.12);
            color: var(--c-copper);
            border: 1px solid rgba(245, 158, 11, 0.25);
            white-space: nowrap;
        }
        .badge-dark {
            background-color: var(--c-charcoal);
            color: var(--c-amber);
            border: 1px solid rgba(245, 158, 11, 0.3);
        }

        /* ===== Cards ===== */
        .card-base {
            background-color: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--c-border-subtle);
            box-shadow: var(--shadow-soft);
            transition: all var(--transition-med);
        }
        .card-base:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            padding-top: 160px;
            padding-bottom: 100px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 26, 0.78) 0%, rgba(46, 58, 58, 0.65) 55%, rgba(26, 26, 26, 0.45) 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero h1 {
            font-size: 44px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .page-hero p {
            font-size: 17px;
            color: rgba(245, 239, 230, 0.88);
            max-width: 680px;
            line-height: 1.85;
        }
        .page-hero .hero-badge {
            margin-bottom: 18px;
        }

        /* ===== FAQ Section ===== */
        .faq-wrapper {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background-color: #fff;
            border-radius: 16px;
            border: 1px solid var(--c-border-subtle);
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(26, 26, 26, 0.04);
            transition: all var(--transition-med);
        }
        .faq-item.open {
            border-color: var(--c-amber);
            box-shadow: var(--shadow-soft);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--c-charcoal);
            background: none;
            text-align: left;
            gap: 16px;
            transition: all var(--transition-fast);
            border-radius: 16px;
        }
        .faq-question:hover {
            background-color: rgba(245, 158, 11, 0.04);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: var(--c-warm-bg);
            color: var(--c-amber);
            font-size: 18px;
            font-weight: 700;
            transition: all var(--transition-med);
        }
        .faq-item.open .faq-question .faq-icon {
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 24px;
            color: var(--c-text-muted);
            font-size: 15px;
            line-height: 1.85;
            transition: all var(--transition-med);
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-bottom: 22px;
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            background-color: var(--c-charcoal);
            border-radius: var(--radius-hero);
            padding: 56px 48px;
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        .cta-banner::after {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background-color: rgba(245, 158, 11, 0.1);
            pointer-events: none;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            bottom: -50px;
            left: -30px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background-color: rgba(245, 158, 11, 0.06);
            pointer-events: none;
        }
        .cta-banner h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }
        .cta-banner p {
            font-size: 16px;
            color: rgba(245, 239, 230, 0.75);
            margin-bottom: 28px;
            position: relative;
            z-index: 2;
        }
        .cta-banner .btn-primary {
            position: relative;
            z-index: 2;
        }

        /* ===== Topic Cards ===== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .topic-card {
            background-color: #fff;
            border-radius: 16px;
            padding: 26px 24px;
            border: 1px solid var(--c-border-subtle);
            box-shadow: var(--shadow-soft);
            transition: all var(--transition-med);
        }
        .topic-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--c-amber);
        }
        .topic-card-num {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 700;
            color: var(--c-amber);
            margin-bottom: 8px;
        }
        .topic-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--c-charcoal);
        }
        .topic-card p {
            font-size: 14px;
            color: var(--c-text-muted);
            line-height: 1.7;
        }

        /* ===== Deep Content ===== */
        .deep-box {
            background-color: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--c-border-subtle);
            box-shadow: var(--shadow-soft);
            padding: 36px 32px;
            margin-bottom: 24px;
        }
        .deep-box h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--c-charcoal);
        }
        .deep-box p {
            font-size: 15px;
            color: var(--c-text-muted);
            line-height: 1.9;
            margin-bottom: 12px;
        }
        .deep-box p:last-child { margin-bottom: 0; }

        /* ===== Image Placeholder ===== */
        .img-placeholder {
            background-color: #e8e0d6;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 220px;
            font-size: 14px;
            color: #a89b8a;
            letter-spacing: 0.5px;
            border: 1px dashed var(--c-border-light);
        }
        .img-placeholder-editorial {
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            border-radius: 16px;
            min-height: 280px;
            position: relative;
            overflow: hidden;
            border: 1px solid var(--c-border-light);
        }
        .img-placeholder-editorial::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(26,26,26,0.5) 100%);
        }

        /* ===== Footer ===== */
        .site-footer {
            background-color: var(--c-charcoal);
            color: var(--c-text-light);
            padding-top: 64px;
            padding-bottom: 28px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(245, 239, 230, 0.1);
            margin-bottom: 28px;
        }
        .site-footer h4 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .site-footer .footer-brand p {
            font-size: 14px;
            color: rgba(245, 239, 230, 0.65);
            line-height: 1.7;
            max-width: 320px;
        }
        .site-footer h5 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(245, 239, 230, 0.7);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover { color: var(--c-amber); }
        .footer-contact-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 14px;
            color: rgba(245, 239, 230, 0.7);
        }
        .footer-contact-list .fi-icon {
            display: inline-block;
            margin-right: 8px;
            color: var(--c-amber);
            font-size: 14px;
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 12px;
            color: rgba(245, 239, 230, 0.45);
        }
        .footer-beian {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .footer-bottom a {
            color: rgba(245, 239, 230, 0.55);
        }
        .footer-bottom a:hover { color: var(--c-amber); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .topic-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-cta {
                display: none;
            }
            .section-pad {
                padding-top: 64px;
                padding-bottom: 64px;
            }
            .section-pad-sm {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .page-hero {
                padding-top: 130px;
                padding-bottom: 72px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .page-hero p {
                font-size: 15px;
            }
            .cta-banner {
                padding: 36px 24px;
            }
            .cta-banner h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .deep-box {
                padding: 24px 20px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }
            .nav-inner {
                height: 60px;
            }
            .mobile-nav-panel {
                top: 60px;
            }
            .nav-logo {
                font-size: 20px;
            }
            .nav-logo .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero {
                padding-top: 110px;
                padding-bottom: 56px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 18px;
                font-size: 14px;
            }
            .faq-item.open .faq-answer {
                padding-bottom: 16px;
            }
            .cta-banner h2 {
                font-size: 21px;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                padding: 13px 20px;
                font-size: 14px;
            }
            .deep-box h3 {
                font-size: 19px;
            }
        }

/* roulang page: category6 */
:root {
            --c-charcoal: #1A1A1A;
            --c-amber: #F59E0B;
            --c-amber-hover: #D97E00;
            --c-warm-bg: #FAF7F2;
            --c-copper: #7C5C3D;
            --c-teal-gray: #2E3A3A;
            --c-border-light: rgba(124, 92, 61, 0.18);
            --c-border-subtle: rgba(26, 26, 26, 0.08);
            --c-text-muted: #6B5D4F;
            --c-text-light: #F5EFE6;
            --c-glass-light: rgba(255, 255, 255, 0.65);
            --c-glass-dark: rgba(20, 20, 20, 0.55);
            --radius-card: 18px;
            --radius-btn: 10px;
            --radius-hero: 22px;
            --shadow-soft: 0 8px 24px rgba(26, 26, 26, 0.08);
            --shadow-hover: 0 14px 36px rgba(26, 26, 26, 0.14);
            --shadow-nav: 0 4px 20px rgba(26, 26, 26, 0.1);
            --font-cn: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-mono: 'SFMono-Regular', 'Menlo', 'Consolas', 'PingFang SC', monospace;
            --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-med: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-cn);
            background-color: var(--c-warm-bg);
            color: var(--c-charcoal);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--c-amber);
        }

        img {
            max-width: 100%;
            display: block;
            height: auto;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-pad {
            padding-top: 96px;
            padding-bottom: 96px;
        }
        .section-pad-sm {
            padding-top: 64px;
            padding-bottom: 64px;
        }

        /* ===== Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: var(--c-glass-light);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--c-border-light);
            box-shadow: 0 2px 16px rgba(26, 26, 26, 0.04);
            transition: all var(--transition-med);
        }

        .site-header.scrolled {
            background-color: rgba(250, 247, 242, 0.95);
            box-shadow: var(--shadow-nav);
            border-bottom-color: var(--c-border-light);
        }

        .site-header.scrolled .nav-logo {
            font-size: 22px;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .nav-logo {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--c-charcoal);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: font-size var(--transition-med);
        }

        .nav-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--c-charcoal);
            color: var(--c-amber);
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 16px;
            letter-spacing: -0.5px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--c-charcoal);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background-color: var(--c-amber);
            border-radius: 2px;
            transition: width var(--transition-med);
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--c-amber);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
        }

        .nav-cta:hover {
            background-color: var(--c-amber-hover);
            color: var(--c-charcoal);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(245, 158, 11, 0.35);
        }

        .nav-search-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--c-border-light);
            color: var(--c-charcoal);
            font-size: 16px;
            transition: all var(--transition-fast);
        }

        .nav-search-btn:hover {
            background-color: var(--c-warm-bg);
            border-color: var(--c-amber);
            color: var(--c-amber);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            border: 1px solid var(--c-border-light);
            background: transparent;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--c-charcoal);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            background-color: rgba(250, 247, 242, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--c-border-light);
            padding: 16px 24px;
            box-shadow: var(--shadow-nav);
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-menu a {
            display: block;
            font-size: 16px;
            font-weight: 500;
            color: var(--c-charcoal);
            padding: 12px 8px;
            border-radius: 8px;
            transition: all var(--transition-fast);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background-color: rgba(245, 158, 11, 0.1);
            color: var(--c-amber);
        }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
        }

        .btn-primary:hover {
            background-color: var(--c-amber-hover);
            color: var(--c-charcoal);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(245, 158, 11, 0.35);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(245, 158, 11, 0.2);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--c-amber);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            background-color: transparent;
            border: 1px solid var(--c-charcoal);
            color: var(--c-charcoal);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition-fast);
        }

        .btn-secondary:hover {
            background-color: var(--c-warm-bg);
            border-color: var(--c-amber);
            color: var(--c-amber);
            transform: translateY(-2px);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid var(--c-amber);
            outline-offset: 2px;
        }

        .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-weight: 600;
            font-size: 15px;
            color: var(--c-charcoal);
            position: relative;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .btn-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 100%;
            height: 2px;
            background-color: var(--c-amber);
            border-radius: 2px;
            transition: width var(--transition-med);
            width: 0;
        }

        .btn-link:hover {
            color: var(--c-amber);
        }
        .btn-link:hover::after {
            width: 100%;
        }

        /* ===== Cards ===== */
        .card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-soft);
            border: 1px solid var(--c-border-subtle);
            transition: all var(--transition-med);
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 999px;
            background-color: rgba(245, 158, 11, 0.12);
            color: var(--c-copper);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
        }

        .tag-dark {
            background-color: rgba(26, 26, 26, 0.08);
            color: var(--c-charcoal);
        }

        .tag-amber {
            background-color: var(--c-amber);
            color: var(--c-charcoal);
            font-weight: 600;
        }

        /* ===== Forms ===== */
        .form-input {
            width: 100%;
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid var(--c-border-light);
            background: #fff;
            color: var(--c-charcoal);
            font-size: 15px;
            transition: all var(--transition-fast);
            outline: none;
        }

        .form-input:focus {
            border-color: var(--c-amber);
            box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
        }

        .form-input::placeholder {
            color: var(--c-text-muted);
        }

        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--c-charcoal);
            margin-bottom: 6px;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: #fff;
            border-radius: 14px;
            border: 1px solid var(--c-border-subtle);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--c-border-light);
        }

        .faq-btn {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--c-charcoal);
            text-align: left;
            transition: all var(--transition-fast);
            gap: 16px;
        }

        .faq-btn:hover {
            color: var(--c-amber);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--c-border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: var(--c-amber);
            transition: transform var(--transition-med);
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-med);
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 20px 20px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--c-teal-gray);
        }

        /* ===== Footer ===== */
        .site-footer {
            background-color: var(--c-charcoal);
            color: var(--c-text-light);
            padding-top: 64px;
            padding-bottom: 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 40px;
        }

        .footer-brand h4 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(245, 239, 230, 0.7);
            line-height: 1.7;
            margin: 0;
        }

        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(245, 239, 230, 0.7);
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--c-amber);
        }

        .footer-contact-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-contact-list li {
            font-size: 14px;
            color: rgba(245, 239, 230, 0.7);
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .fi-icon {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(245, 239, 230, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: rgba(245, 239, 230, 0.55);
        }

        .footer-beian {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom a {
            font-size: 12px;
            color: rgba(245, 239, 230, 0.55);
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--c-amber);
        }

        /* ===== Resource tools specific ===== */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }

        .resource-card-large {
            grid-column: span 7;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-soft);
            border: 1px solid var(--c-border-subtle);
            overflow: hidden;
            transition: all var(--transition-med);
            display: flex;
            flex-direction: column;
        }

        .resource-card-large:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .resource-card-small {
            grid-column: span 5;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-soft);
            border: 1px solid var(--c-border-subtle);
            padding: 24px;
            transition: all var(--transition-med);
            display: flex;
            flex-direction: column;
        }

        .resource-card-small:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .resource-card-full {
            grid-column: span 12;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-soft);
            border: 1px solid var(--c-border-subtle);
            padding: 28px;
            transition: all var(--transition-med);
        }

        .resource-card-full:hover {
            box-shadow: var(--shadow-hover);
        }

        .icon-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(245, 158, 11, 0.12);
            color: var(--c-copper);
            font-size: 20px;
            flex-shrink: 0;
        }

        .list-item-resource {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px solid var(--c-border-subtle);
        }

        .list-item-resource:last-child {
            border-bottom: none;
        }

        .list-item-resource .resource-dot {
            flex-shrink: 0;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--c-amber);
            margin-top: 8px;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 10px;
            border: 1px solid var(--c-border-light);
            background: #fff;
            transition: all var(--transition-fast);
        }

        .search-box:focus-within {
            border-color: var(--c-amber);
            box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.12);
        }

        .search-box input {
            flex: 1;
            border: none;
            outline: none;
            font-size: 14px;
            color: var(--c-charcoal);
            background: transparent;
        }

        .search-box input::placeholder {
            color: var(--c-text-muted);
        }

        .download-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 8px;
            border: 1px solid var(--c-border-light);
            color: var(--c-charcoal);
            font-size: 13px;
            font-weight: 500;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .download-btn:hover {
            border-color: var(--c-amber);
            color: var(--c-amber);
            background-color: rgba(245, 158, 11, 0.05);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 18px;
            }
            .nav-links a {
                font-size: 14px;
            }
            .section-pad {
                padding-top: 72px;
                padding-bottom: 72px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-right .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .resource-card-large {
                grid-column: span 12;
            }
            .resource-card-small {
                grid-column: span 12;
            }
            .section-pad {
                padding-top: 56px;
                padding-bottom: 56px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .nav-logo {
                font-size: 20px;
            }
            .nav-logo .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .section-pad {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 10px 20px;
                font-size: 14px;
            }
        }