/* roulang page: index */
:root {
            --primary: #1B2838;
            --primary-dark: #0E1A26;
            --secondary: #C9A04B;
            --secondary-hover: #B8912E;
            --bg-page: #F5F3EE;
            --bg-card: #FFFFFF;
            --text-body: #2C3E50;
            --text-heading: #1A2A3A;
            --text-muted: #6B7A8D;
            --border-color: #D5D8DC;
            --success: #2ECC71;
            --error: #E74C3C;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-hover: 0 4px 16px rgba(0,0,0,0.10);
            --nav-shadow: 0 2px 6px rgba(0,0,0,0.08);
            --transition: 0.2s ease-in-out;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html { scroll-behavior: smooth; }

        body {
            font-family: var(--font-stack);
            color: var(--text-body);
            background: var(--bg-page);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a { color: var(--secondary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--secondary-hover); }
        a:focus { outline: 2px solid var(--secondary); outline-offset: 2px; }

        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }

        .container { max-width: 1200px; margin: 0 auto; padding: 0 1rem; }
        .section-padding { padding: 3rem 0; }
        .section-title { font-size: 1.75rem; font-weight: 700; color: var(--text-heading); margin-bottom: 0.5rem; }
        .section-subtitle { font-size: 1rem; color: var(--text-muted); margin-bottom: 2rem; }

        /* Header / Navigation */
        .site-header {
            position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
            background: var(--primary);
            box-shadow: var(--nav-shadow);
            height: 56px;
            transition: background var(--transition);
        }
        .site-header .container { display: flex; align-items: center; justify-content: space-between; height: 56px; }
        .logo-area { display: flex; align-items: center; gap: 0.5rem; }
        .logo-icon {
            width: 32px; height: 32px; border-radius: 4px;
            background: var(--secondary);
            display: flex; align-items: center; justify-content: center;
            font-weight: 700; font-size: 1.1rem; color: #fff;
        }
        .logo-text { font-size: 1.1rem; font-weight: 700; color: #fff; letter-spacing: 0.02em; }
        .nav-links { display: flex; align-items: center; gap: 1.5rem; }
        .nav-links a {
            color: rgba(255,255,255,0.85); font-size: 1rem; font-weight: 500;
            position: relative; padding: 0.25rem 0; transition: color var(--transition);
        }
        .nav-links a:hover { color: var(--secondary); }
        .nav-links a::after {
            content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px;
            background: var(--secondary); transition: width var(--transition);
        }
        .nav-links a:hover::after { width: 100%; }
        .nav-links a.active { color: var(--secondary); }
        .nav-links a.active::after { width: 100%; }
        .nav-right { display: flex; align-items: center; gap: 1rem; }
        .search-box {
            display: flex; align-items: center;
            background: rgba(255,255,255,0.12); border-radius: var(--radius-lg);
            padding: 0.25rem 0.75rem; border: 1px solid transparent;
            transition: border var(--transition);
        }
        .search-box:focus-within { border-color: var(--secondary); }
        .search-box input {
            background: transparent; border: none; outline: none;
            color: #fff; font-size: 0.9rem; width: 140px; padding: 0.25rem 0;
        }
        .search-box input::placeholder { color: rgba(255,255,255,0.5); }
        .search-box button { background: none; border: none; color: var(--secondary); cursor: pointer; font-size: 0.9rem; }
        .btn-login { color: #fff; font-size: 0.9rem; font-weight: 500; }
        .btn-login:hover { color: var(--secondary); }
        .btn-cta {
            display: inline-flex; align-items: center; gap: 0.4rem;
            background: var(--secondary); color: #fff; font-weight: 600;
            padding: 0.4rem 1.2rem; border-radius: var(--radius-sm);
            font-size: 0.95rem; transition: background var(--transition);
            border: none; cursor: pointer;
        }
        .btn-cta:hover { background: var(--secondary-hover); color: #fff; }
        .btn-cta i { font-size: 0.8rem; }

        .hamburger { display: none; background: none; border: none; color: var(--secondary); font-size: 1.5rem; cursor: pointer; }

        /* Mobile Nav */
        .mobile-nav {
            display: none; position: fixed; top: 56px; left: 0; width: 100%;
            background: var(--primary); padding: 1rem; z-index: 999;
            box-shadow: var(--nav-shadow);
        }
        .mobile-nav.open { display: block; }
        .mobile-nav a {
            display: block; color: rgba(255,255,255,0.85); padding: 0.6rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.06); font-size: 1rem;
        }
        .mobile-nav a:hover { color: var(--secondary); }
        .mobile-nav a.active { color: var(--secondary); }
        .mobile-nav .search-box { margin-top: 0.5rem; width: 100%; }
        .mobile-nav .search-box input { width: 100%; }

        /* Hero */
        .hero {
            margin-top: 56px;
            background: linear-gradient(135deg, rgba(27,40,56,0.75) 0%, rgba(14,26,38,0.85) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            min-height: 80vh; display: flex; align-items: center; justify-content: center;
            position: relative; overflow: hidden;
        }
        .hero::after {
            content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 6px;
            background: var(--secondary); opacity: 0.5;
        }
        .hero-content { text-align: center; padding: 4rem 1rem; max-width: 800px; }
        .hero h1 {
            font-size: 2.8rem; font-weight: 800; color: #fff;
            text-shadow: 0 2px 12px rgba(0,0,0,0.3);
            margin-bottom: 1rem; letter-spacing: 0.02em;
        }
        .hero h1 span { color: var(--secondary); }
        .hero-sub {
            font-size: 1.25rem; color: rgba(255,255,255,0.9);
            margin-bottom: 2rem; line-height: 1.6;
        }
        .hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
        .btn-hero-primary {
            display: inline-flex; align-items: center; gap: 0.5rem;
            background: var(--secondary); color: #fff; font-weight: 700;
            padding: 0.75rem 2rem; border-radius: var(--radius-sm);
            font-size: 1.1rem; transition: background var(--transition);
            border: none; cursor: pointer;
        }
        .btn-hero-primary:hover { background: var(--secondary-hover); color: #fff; }
        .btn-hero-secondary {
            display: inline-flex; align-items: center; gap: 0.5rem;
            background: transparent; color: #fff; font-weight: 600;
            padding: 0.75rem 2rem; border-radius: var(--radius-sm);
            font-size: 1.1rem; border: 2px solid rgba(255,255,255,0.6);
            transition: all var(--transition); cursor: pointer;
        }
        .btn-hero-secondary:hover { background: rgba(255,255,255,0.1); border-color: #fff; color: #fff; }

        /* Feature / Stats */
        .stats-row { display: flex; justify-content: center; gap: 3rem; flex-wrap: wrap; margin-top: 2.5rem; }
        .stat-item { text-align: center; color: #fff; }
        .stat-number { font-size: 2rem; font-weight: 800; color: var(--secondary); }
        .stat-label { font-size: 0.9rem; opacity: 0.8; margin-top: 0.2rem; }

        /* Section: Featured Topic */
        .featured-topic { background: var(--bg-card); }
        .topic-grid { display: flex; gap: 2rem; align-items: center; flex-wrap: wrap; }
        .topic-image { flex: 2; min-width: 280px; border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); }
        .topic-image img { width: 100%; height: auto; display: block; }
        .topic-text { flex: 1; min-width: 240px; }
        .topic-text h2 { font-size: 1.75rem; font-weight: 700; color: var(--text-heading); margin-bottom: 1rem; }
        .topic-text p { color: var(--text-muted); margin-bottom: 1.5rem; line-height: 1.7; }
        .topic-text .btn-cta { font-size: 1rem; padding: 0.6rem 1.5rem; }

        /* Section: Directory Cards */
        .dir-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem; }
        .dir-card {
            background: var(--bg-card); border-radius: var(--radius-md); padding: 1.5rem;
            box-shadow: var(--shadow-sm); transition: all var(--transition);
            border: 1px solid rgba(0,0,0,0.04);
        }
        .dir-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .dir-card .icon { font-size: 2rem; color: var(--secondary); margin-bottom: 0.8rem; }
        .dir-card h3 { font-size: 1.25rem; font-weight: 600; color: var(--text-heading); margin-bottom: 0.5rem; }
        .dir-card p { font-size: 0.95rem; color: var(--text-muted); margin-bottom: 1rem; line-height: 1.6; }
        .dir-card .link { color: var(--secondary); font-weight: 500; font-size: 0.9rem; }
        .dir-card .link i { margin-left: 0.3rem; font-size: 0.8rem; }

        /* Section: Featured Items (Cards) */
        .card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
        .item-card {
            background: var(--bg-card); border-radius: var(--radius-md); overflow: hidden;
            box-shadow: var(--shadow-sm); transition: all var(--transition);
            border: 1px solid rgba(0,0,0,0.04);
        }
        .item-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .item-card .card-img { width: 100%; height: 180px; object-fit: cover; }
        .item-card .card-body { padding: 1.2rem; }
        .item-card .card-tag {
            display: inline-block; background: var(--secondary); color: #fff;
            border-radius: 12px; padding: 0.15rem 0.6rem; font-size: 0.8rem;
            font-weight: 500; margin-bottom: 0.5rem;
        }
        .item-card h3 { font-size: 1.1rem; font-weight: 600; color: var(--text-heading); margin-bottom: 0.4rem; }
        .item-card .card-summary {
            font-size: 0.9rem; color: var(--text-muted); line-height: 1.5;
            display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
            margin-bottom: 0.8rem;
        }
        .item-card .card-meta { display: flex; align-items: center; justify-content: space-between; font-size: 0.85rem; color: var(--text-muted); }
        .item-card .card-meta .date { }
        .item-card .card-meta .actions { display: flex; gap: 0.6rem; }
        .item-card .card-meta .actions i { cursor: pointer; transition: color var(--transition); }
        .item-card .card-meta .actions i:hover { color: var(--secondary); }
        .item-card .card-meta .actions .fa-heart:hover { color: var(--error); }
        .item-card .read-more { color: var(--secondary); font-weight: 500; font-size: 0.9rem; }
        .item-card .read-more i { margin-left: 0.3rem; font-size: 0.8rem; }

        /* Section: Related (horizontal scroll) */
        .related-scroll { overflow: hidden; position: relative; }
        .related-track { display: flex; gap: 1.2rem; overflow-x: auto; padding-bottom: 0.5rem; scroll-snap-type: x mandatory; }
        .related-track::-webkit-scrollbar { height: 6px; }
        .related-track::-webkit-scrollbar-thumb { background: var(--secondary); border-radius: 10px; }
        .related-card {
            flex: 0 0 240px; scroll-snap-align: start;
            background: var(--bg-card); border-radius: var(--radius-md); overflow: hidden;
            box-shadow: var(--shadow-sm); transition: all var(--transition);
            border: 1px solid rgba(0,0,0,0.04);
        }
        .related-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
        .related-card img { width: 100%; height: 140px; object-fit: cover; }
        .related-card .rel-body { padding: 0.8rem; }
        .related-card .rel-body h4 { font-size: 0.95rem; font-weight: 600; color: var(--text-heading); margin-bottom: 0.2rem; }
        .related-card .rel-body .rel-cat { font-size: 0.75rem; color: var(--secondary); font-weight: 500; }

        /* Section: Latest News (CMS) */
        .cms-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 1.5rem; }
        .cms-item {
            background: var(--bg-card); border-radius: var(--radius-md); padding: 1.2rem;
            box-shadow: var(--shadow-sm); transition: all var(--transition);
            border: 1px solid rgba(0,0,0,0.04);
        }
        .cms-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
        .cms-item .cms-cat { font-size: 0.8rem; color: var(--secondary); font-weight: 500; margin-bottom: 0.3rem; }
        .cms-item h3 { font-size: 1.05rem; font-weight: 600; color: var(--text-heading); margin-bottom: 0.3rem; }
        .cms-item .cms-excerpt { font-size: 0.9rem; color: var(--text-muted); line-height: 1.5; margin-bottom: 0.5rem; }
        .cms-item .cms-meta { font-size: 0.8rem; color: var(--text-muted); display: flex; gap: 0.8rem; }
        .cms-empty {
            grid-column: 1 / -1; text-align: center; padding: 2rem;
            background: var(--bg-card); border-radius: var(--radius-md);
            color: var(--text-muted); font-size: 1rem;
        }

        /* Section: FAQ */
        .faq-list { max-width: 780px; margin: 0 auto; }
        .faq-item { border-bottom: 1px solid var(--border-color); padding: 0.8rem 0; }
        .faq-question {
            display: flex; align-items: center; justify-content: space-between;
            font-weight: 600; color: var(--text-heading); cursor: pointer;
            padding: 0.4rem 0; font-size: 1.05rem;
        }
        .faq-question i { color: var(--secondary); transition: transform var(--transition); font-size: 1rem; }
        .faq-question.open i { transform: rotate(45deg); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; color: var(--text-muted); font-size: 0.95rem; line-height: 1.6; }
        .faq-answer.open { max-height: 300px; padding: 0.4rem 0 0.6rem; }

        /* Section: CTA */
        .cta-section {
            background: var(--primary); color: #fff;
            text-align: center; padding: 3.5rem 1rem;
        }
        .cta-section h2 { font-size: 1.75rem; font-weight: 700; margin-bottom: 0.8rem; }
        .cta-section p { font-size: 1rem; opacity: 0.85; margin-bottom: 1.8rem; max-width: 600px; margin-left: auto; margin-right: auto; }
        .cta-section .btn-cta { font-size: 1.1rem; padding: 0.8rem 2.5rem; }

        /* Footer */
        .site-footer {
            background: var(--primary-dark); color: rgba(255,255,255,0.8);
            padding: 2.5rem 0 1rem;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 2rem; }
        .footer-brand .logo-text { font-size: 1.1rem; margin-bottom: 0.5rem; display: block; }
        .footer-brand p { font-size: 0.9rem; opacity: 0.7; line-height: 1.6; max-width: 300px; }
        .footer-links h4 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 0.8rem; }
        .footer-links a { display: block; color: rgba(255,255,255,0.6); font-size: 0.9rem; padding: 0.2rem 0; transition: color var(--transition); }
        .footer-links a:hover { color: var(--secondary); }
        .footer-social { display: flex; gap: 0.8rem; margin-top: 1rem; }
        .footer-social a {
            width: 36px; height: 36px; border-radius: 50%;
            background: rgba(255,255,255,0.1); display: flex; align-items: center; justify-content: center;
            color: rgba(255,255,255,0.7); font-size: 1rem; transition: all var(--transition);
        }
        .footer-social a:hover { background: var(--secondary); color: #fff; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); margin-top: 2rem; padding-top: 1.2rem; text-align: center; font-size: 0.85rem; opacity: 0.6; }

        /* Floating CTA */
        .float-cta {
            position: fixed; right: 1.5rem; bottom: 2rem; z-index: 500;
            display: flex; flex-direction: column; gap: 0.6rem;
        }
        .float-btn {
            width: 48px; height: 48px; border-radius: 50%;
            background: var(--secondary); color: #fff; border: none;
            display: flex; align-items: center; justify-content: center;
            font-size: 1.2rem; cursor: pointer; box-shadow: 0 2px 12px rgba(0,0,0,0.15);
            transition: all var(--transition); position: relative;
        }
        .float-btn:hover { background: var(--secondary-hover); transform: scale(1.05); }
        .float-btn .tooltip {
            position: absolute; right: 56px; background: var(--primary); color: #fff;
            padding: 0.3rem 0.8rem; border-radius: var(--radius-sm);
            font-size: 0.8rem; white-space: nowrap; opacity: 0; pointer-events: none;
            transition: opacity var(--transition);
        }
        .float-btn:hover .tooltip { opacity: 1; }

        /* Back to top */
        .back-top {
            position: fixed; left: 1.5rem; bottom: 2rem; z-index: 500;
            width: 44px; height: 44px; border-radius: 50%;
            background: rgba(201,160,75,0.8); color: #fff; border: none;
            display: flex; align-items: center; justify-content: center;
            font-size: 1.1rem; cursor: pointer; box-shadow: 0 2px 8px rgba(0,0,0,0.12);
            transition: all var(--transition); opacity: 0; visibility: hidden;
        }
        .back-top.visible { opacity: 1; visibility: visible; }
        .back-top:hover { background: var(--secondary); }

        /* Responsive */
        @media (max-width: 40em) {
            .nav-links { display: none; }
            .nav-right .search-box, .nav-right .btn-login, .nav-right .btn-cta { display: none; }
            .hamburger { display: block; }
            .hero h1 { font-size: 1.8rem; }
            .hero-sub { font-size: 1rem; }
            .section-title { font-size: 1.4rem; }
            .stats-row { gap: 1.5rem; }
            .stat-number { font-size: 1.5rem; }
            .topic-grid { flex-direction: column; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .section-padding { padding: 2rem 0; }
            .float-cta { right: 0.8rem; bottom: 1.2rem; }
            .float-btn { width: 42px; height: 42px; font-size: 1rem; }
            .back-top { left: 0.8rem; bottom: 1.2rem; width: 38px; height: 38px; font-size: 0.9rem; }
            .cms-list { grid-template-columns: 1fr; }
            .card-grid { grid-template-columns: 1fr; }
            .dir-grid { grid-template-columns: 1fr; }
        }

        @media (min-width: 40em) and (max-width: 64em) {
            .hero h1 { font-size: 2.2rem; }
            .nav-links { gap: 1rem; }
            .nav-right .search-box input { width: 100px; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .card-grid { grid-template-columns: repeat(2, 1fr); }
            .cms-list { grid-template-columns: repeat(2, 1fr); }
        }

        @media (min-width: 64em) {
            .card-grid { grid-template-columns: repeat(3, 1fr); }
            .cms-list { grid-template-columns: repeat(2, 1fr); }
        }

        /* Utility */
        .text-gold { color: var(--secondary); }
        .bg-white { background: var(--bg-card); }
        .rounded { border-radius: var(--radius-md); }
        .shadow { box-shadow: var(--shadow-sm); }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mt-2 { margin-top: 2rem; }
        .text-center { text-align: center; }

/* roulang page: article */
:root {
            --primary: #1B2838;
            --primary-dark: #0E1A26;
            --secondary: #C9A04B;
            --secondary-hover: #B8912E;
            --bg: #F5F3EE;
            --card-bg: #FFFFFF;
            --text: #2C3E50;
            --title-color: #1A2A3A;
            --muted: #6B7A8D;
            --border: #D5D8DC;
            --success: #2ECC71;
            --error: #E74C3C;
            --radius: 8px;
            --radius-sm: 6px;
            --radius-lg: 20px;
            --shadow: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-hover: 0 4px 16px rgba(0,0,0,0.1);
            --nav-shadow: 0 2px 6px rgba(0,0,0,0.08);
            --transition: 0.2s ease-in-out;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }
        *,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-stack);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--secondary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--secondary-hover); }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 1rem; }
        @media screen and (max-width: 39.9375em) { .container { padding: 0 0.5rem; } }

        /* header */
        .site-header {
            background: var(--primary);
            box-shadow: var(--nav-shadow);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 56px;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 56px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 34px;
            height: 34px;
            background: var(--secondary);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #fff;
            font-size: 1.2rem;
        }
        .logo-text {
            color: #fff;
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.2rem;
        }
        .nav-links a {
            color: rgba(255,255,255,0.85);
            padding: 0.45rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover { color: #fff; background: rgba(255,255,255,0.08); }
        .nav-links a.active { color: var(--secondary); }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }
        .search-wrap {
            position: relative;
            display: flex;
            align-items: center;
        }
        .search-wrap input {
            height: 34px;
            border-radius: 20px;
            border: 1px solid rgba(255,255,255,0.2);
            background: rgba(255,255,255,0.1);
            color: #fff;
            padding: 0 0.8rem 0 2rem;
            font-size: 0.85rem;
            width: 140px;
            transition: var(--transition);
        }
        .search-wrap input::placeholder { color: rgba(255,255,255,0.5); }
        .search-wrap input:focus { outline: none; border-color: var(--secondary); width: 180px; }
        .search-wrap i {
            position: absolute;
            left: 0.7rem;
            color: var(--secondary);
            font-size: 0.85rem;
            pointer-events: none;
        }
        .btn-header {
            height: 34px;
            padding: 0 1.2rem;
            background: var(--secondary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 0.4rem;
            white-space: nowrap;
        }
        .btn-header:hover { background: var(--secondary-hover); color: #fff; }
        .btn-header i { font-size: 0.75rem; }
        .auth-links { display: flex; gap: 0.6rem; }
        .auth-links a { color: rgba(255,255,255,0.8); font-size: 0.85rem; transition: var(--transition); }
        .auth-links a:hover { color: var(--secondary); }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--secondary);
            font-size: 1.4rem;
            cursor: pointer;
            padding: 0.2rem;
        }
        @media screen and (max-width: 63.9375em) {
            .nav-links { display: none; }
            .header-actions .search-wrap { display: none; }
            .header-actions .auth-links { display: none; }
            .hamburger { display: block; }
        }
        .mobile-menu {
            display: none;
            background: var(--primary-dark);
            padding: 0.8rem 1rem;
            flex-direction: column;
            gap: 0.4rem;
        }
        .mobile-menu.open { display: flex; }
        .mobile-menu a {
            color: rgba(255,255,255,0.85);
            padding: 0.5rem 0.6rem;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
        }
        .mobile-menu a:hover { background: rgba(255,255,255,0.08); color: #fff; }
        .mobile-menu a.active { color: var(--secondary); }
        .mobile-menu .search-wrap { display: flex; margin: 0.4rem 0; }
        .mobile-menu .search-wrap input { width: 100%; background: rgba(255,255,255,0.15); }

        /* article detail */
        .article-detail {
            padding-top: 80px;
            padding-bottom: 3rem;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.85rem;
            color: var(--muted);
            padding: 1rem 0 0.5rem;
            flex-wrap: wrap;
        }
        .article-breadcrumb a { color: var(--muted); }
        .article-breadcrumb a:hover { color: var(--secondary); }
        .article-breadcrumb span { color: var(--secondary); }
        .article-breadcrumb i { font-size: 0.6rem; color: var(--secondary); }
        .article-header {
            max-width: 760px;
            margin: 0 auto 2rem;
        }
        .article-header h1 {
            font-size: 2rem;
            color: var(--title-color);
            line-height: 1.3;
            margin-bottom: 0.8rem;
            font-weight: 700;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            font-size: 0.85rem;
            color: var(--muted);
            flex-wrap: wrap;
        }
        .article-meta i { margin-right: 0.3rem; color: var(--secondary); }
        .article-meta .tag {
            background: var(--secondary);
            color: #fff;
            border-radius: 12px;
            padding: 0.15rem 0.7rem;
            font-size: 0.75rem;
        }
        .article-body {
            max-width: 760px;
            margin: 0 auto;
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 2rem 2.5rem;
            line-height: 1.8;
            color: var(--text);
        }
        .article-body h2 { font-size: 1.5rem; color: var(--title-color); margin: 1.8rem 0 0.8rem; }
        .article-body h3 { font-size: 1.2rem; color: var(--title-color); margin: 1.4rem 0 0.6rem; }
        .article-body p { margin-bottom: 1rem; }
        .article-body img { border-radius: var(--radius); margin: 1.2rem auto; max-width: 100%; }
        .article-body blockquote {
            border-left: 4px solid var(--secondary);
            background: rgba(201,160,75,0.06);
            padding: 0.8rem 1.2rem;
            margin: 1rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--muted);
            font-style: italic;
        }
        .article-body ul, .article-body ol { margin: 0.8rem 0 1rem 1.5rem; }
        .article-body li { margin-bottom: 0.3rem; }
        .article-body a { color: var(--secondary); text-decoration: underline; }
        .article-body a:hover { color: var(--secondary-hover); }
        .article-notfound {
            max-width: 760px;
            margin: 2rem auto;
            text-align: center;
            padding: 3rem 1rem;
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .article-notfound i { font-size: 3rem; color: var(--muted); margin-bottom: 1rem; }
        .article-notfound h3 { color: var(--title-color); margin-bottom: 0.6rem; }
        .article-notfound p { color: var(--muted); margin-bottom: 1.2rem; }
        .article-notfound .btn-back {
            display: inline-block;
            padding: 0.6rem 1.8rem;
            background: var(--secondary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
        }
        .article-notfound .btn-back:hover { background: var(--secondary-hover); color: #fff; }

        /* related */
        .related-section {
            max-width: 760px;
            margin: 2.5rem auto 0;
        }
        .related-section h3 {
            font-size: 1.3rem;
            color: var(--title-color);
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--secondary);
            display: inline-block;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1rem;
        }
        .related-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
        .related-card img { width: 100%; height: 140px; object-fit: cover; }
        .related-card .rc-body { padding: 0.8rem 1rem; }
        .related-card h4 { font-size: 0.95rem; color: var(--title-color); margin-bottom: 0.3rem; line-height: 1.4; }
        .related-card .rc-meta { font-size: 0.75rem; color: var(--muted); }

        /* footer */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.8);
            padding: 3rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-brand .logo-text {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 0.8rem;
        }
        .footer-brand p { font-size: 0.85rem; line-height: 1.6; color: rgba(255,255,255,0.6); margin-bottom: 1rem; }
        .footer-social { display: flex; gap: 0.8rem; }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.6);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--secondary); color: #fff; }
        .footer-links h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 0.8rem;
            font-weight: 600;
        }
        .footer-links a {
            display: block;
            color: rgba(255,255,255,0.55);
            font-size: 0.85rem;
            padding: 0.3rem 0;
            transition: var(--transition);
        }
        .footer-links a:hover { color: var(--secondary); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 1.2rem;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.4);
        }
        @media screen and (max-width: 63.9375em) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media screen and (max-width: 39.9375em) {
            .footer-grid { grid-template-columns: 1fr; }
            .article-header h1 { font-size: 1.5rem; }
            .article-body { padding: 1.2rem 1rem; }
            .related-grid { grid-template-columns: 1fr; }
        }

        /* back to top */
        .back-top {
            position: fixed;
            right: 1.5rem;
            bottom: 2rem;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--secondary);
            color: #fff;
            border: none;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: var(--shadow);
            transition: var(--transition);
            z-index: 999;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .back-top:hover { background: var(--secondary-hover); transform: translateY(-3px); }

        /* utility */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 1rem; }
        .mb-1 { margin-bottom: 1rem; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1B2838;
            --primary-dark: #0E1A26;
            --secondary: #C9A04B;
            --secondary-hover: #B8912E;
            --bg-warm: #F5F3EE;
            --bg-white: #FFFFFF;
            --text-dark: #1A2A3A;
            --text-body: #2C3E50;
            --text-muted: #6B7A8D;
            --text-light: #F5F3EE;
            --border: #D5D8DC;
            --success: #2ECC71;
            --error: #E74C3C;
            --radius: 8px;
            --radius-btn: 6px;
            --radius-search: 20px;
            --shadow-card: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-card-hover: 0 4px 16px rgba(0,0,0,0.1);
            --shadow-nav: 0 2px 6px rgba(0,0,0,0.08);
            --transition: 0.2s ease-in-out;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --nav-height: 56px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-warm);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--secondary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--secondary-hover); }
        a:focus-visible { outline: 2px solid var(--secondary); outline-offset: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); line-height: 1.3; font-weight: 600; }
        h1 { font-size: 2.5rem; }
        h2 { font-size: 1.75rem; }
        h3 { font-size: 1.25rem; }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 1rem; }

        /* ===== Container ===== */
        .container { max-width: 1200px; margin: 0 auto; padding: 0 1rem; }
        @media screen and (max-width: 39.9375em) { .container { padding: 0 0.5rem; } }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            background: var(--primary);
            box-shadow: var(--shadow-nav);
            z-index: 1000;
            display: flex;
            align-items: center;
            transition: background var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            height: 100%;
        }
        .header-left {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--secondary);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .header-center {
            display: flex;
            align-items: center;
            flex: 1;
            justify-content: center;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.8rem;
        }
        .nav-links a {
            color: rgba(255,255,255,0.85);
            font-size: 1rem;
            font-weight: 500;
            padding: 0.25rem 0;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary);
            transition: width var(--transition);
            border-radius: 1px;
        }
        .nav-links a:hover { color: #fff; }
        .nav-links a:hover::after { width: 100%; }
        .nav-links a.active { color: #fff; }
        .nav-links a.active::after { width: 100%; background: var(--secondary); }

        .header-right {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: rgba(255,255,255,0.12);
            border-radius: var(--radius-search);
            padding: 0 0.8rem;
            height: 34px;
            border: 1px solid rgba(255,255,255,0.15);
            transition: border var(--transition);
        }
        .header-search:focus-within { border-color: var(--secondary); }
        .header-search input {
            background: transparent;
            border: none;
            outline: none;
            color: #fff;
            font-size: 0.85rem;
            width: 120px;
            padding: 0.2rem 0;
        }
        .header-search input::placeholder { color: rgba(255,255,255,0.5); }
        .header-search button {
            background: transparent;
            border: none;
            color: var(--secondary);
            cursor: pointer;
            padding: 0.2rem 0 0.2rem 0.5rem;
            font-size: 0.9rem;
        }
        .header-auth a {
            color: rgba(255,255,255,0.85);
            font-size: 0.9rem;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .header-auth a:hover { color: var(--secondary); }
        .btn-header-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: var(--secondary);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 0.4rem 1rem;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
        }
        .btn-header-cta:hover { background: var(--secondary-hover); color: #fff; transform: translateY(-1px); }
        .btn-header-cta i { font-size: 0.8rem; }

        .hamburger {
            display: none;
            background: transparent;
            border: none;
            color: var(--secondary);
            font-size: 1.4rem;
            cursor: pointer;
            padding: 0.2rem;
        }

        /* Mobile Nav */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            width: 100%;
            background: var(--primary-dark);
            padding: 1rem 1.5rem 1.5rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.3);
            z-index: 999;
            flex-direction: column;
            gap: 0.8rem;
        }
        .mobile-nav.open { display: flex; }
        .mobile-nav a {
            color: rgba(255,255,255,0.85);
            font-size: 1rem;
            padding: 0.4rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .mobile-nav a.active { color: var(--secondary); }
        .mobile-nav .mobile-search {
            display: flex;
            align-items: center;
            background: rgba(255,255,255,0.1);
            border-radius: var(--radius-search);
            padding: 0 0.8rem;
            height: 38px;
            border: 1px solid rgba(255,255,255,0.1);
            margin-top: 0.4rem;
        }
        .mobile-nav .mobile-search input {
            background: transparent;
            border: none;
            outline: none;
            color: #fff;
            font-size: 0.9rem;
            width: 100%;
        }
        .mobile-nav .mobile-search input::placeholder { color: rgba(255,255,255,0.4); }
        .mobile-nav .mobile-search button {
            background: transparent;
            border: none;
            color: var(--secondary);
            cursor: pointer;
            padding-left: 0.5rem;
        }

        @media screen and (max-width: 39.9375em) {
            .header-center { display: none; }
            .header-right .header-search { display: none; }
            .header-right .header-auth { display: none; }
            .header-right .btn-header-cta { display: none; }
            .hamburger { display: block; }
            .header-left .logo-text { font-size: 1rem; }
        }

        @media screen and (min-width: 40em) and (max-width: 63.9375em) {
            .header-center .nav-links { gap: 1rem; }
            .header-search input { width: 80px; }
            .header-right { gap: 0.6rem; }
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            padding: 7rem 0 4rem;
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            min-height: 300px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(27,40,56,0.7);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            color: #fff;
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            text-shadow: 0 2px 8px rgba(0,0,0,0.3);
        }
        .page-hero h1 span { color: var(--secondary); }
        .page-hero .hero-sub {
            color: rgba(255,255,255,0.9);
            font-size: 1.15rem;
            max-width: 700px;
            margin: 0 auto 1.8rem;
            line-height: 1.6;
        }
        .page-hero .hero-cta {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        .page-hero .hero-cta .btn-primary {
            background: var(--secondary);
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: var(--radius-btn);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
        }
        .page-hero .hero-cta .btn-primary:hover { background: var(--secondary-hover); transform: translateY(-2px); }
        .page-hero .hero-cta .btn-secondary {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.6);
            padding: 0.7rem 2rem;
            border-radius: var(--radius-btn);
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: background var(--transition), border-color var(--transition);
        }
        .page-hero .hero-cta .btn-secondary:hover { background: rgba(255,255,255,0.1); border-color: #fff; }
        .page-hero .hero-badge {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            padding: 0.2rem 1rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 1rem;
            text-transform: uppercase;
        }

        @media screen and (max-width: 39.9375em) {
            .page-hero { padding: 5.5rem 0 2.5rem; min-height: 220px; }
            .page-hero h1 { font-size: 1.6rem; }
            .page-hero .hero-sub { font-size: 0.95rem; }
        }

        /* ===== Section Spacing ===== */
        .section { padding: 3.5rem 0; }
        .section-title {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        .section-title h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 3px;
            background: var(--secondary);
            margin: 0.6rem auto 0;
            border-radius: 2px;
        }
        .section-title p {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 600px;
            margin: 0.6rem auto 0;
        }
        @media screen and (max-width: 39.9375em) {
            .section { padding: 2rem 0; }
            .section-title { margin-bottom: 1.5rem; }
            .section-title h2 { font-size: 1.4rem; }
        }

        /* ===== Product Cards Grid ===== */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .product-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 1.8rem 1.5rem;
            transition: transform var(--transition), box-shadow var(--transition);
            position: relative;
            overflow: hidden;
            border-top: 3px solid transparent;
        }
        .product-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-top-color: var(--secondary);
        }
        .product-card .card-icon {
            width: 48px;
            height: 48px;
            background: rgba(201,160,75,0.12);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--secondary);
            margin-bottom: 1rem;
        }
        .product-card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; font-weight: 600; }
        .product-card p { color: var(--text-muted); font-size: 0.92rem; line-height: 1.6; margin-bottom: 1rem; }
        .product-card .card-tag {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            padding: 0.15rem 0.6rem;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .product-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            color: var(--secondary);
            font-weight: 500;
            font-size: 0.9rem;
            margin-top: 0.5rem;
            transition: gap var(--transition);
        }
        .product-card .card-link:hover { gap: 0.6rem; }

        @media screen and (max-width: 39.9375em) {
            .product-grid { grid-template-columns: 1fr; }
        }
        @media screen and (min-width: 40em) and (max-width: 63.9375em) {
            .product-grid { grid-template-columns: repeat(2, 1fr); }
        }

        /* ===== Advantages / Stats ===== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .advantage-item {
            text-align: center;
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 2rem 1rem;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition);
        }
        .advantage-item:hover { transform: translateY(-3px); }
        .advantage-item .stat-num {
            font-size: 2rem;
            font-weight: 700;
            color: var(--secondary);
            line-height: 1.2;
            margin-bottom: 0.3rem;
        }
        .advantage-item h4 { font-size: 1rem; font-weight: 600; margin-bottom: 0.3rem; }
        .advantage-item p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0; }

        @media screen and (max-width: 39.9375em) {
            .advantages-grid { grid-template-columns: repeat(2, 1fr); gap: 0.8rem; }
            .advantage-item { padding: 1.2rem 0.8rem; }
            .advantage-item .stat-num { font-size: 1.5rem; }
        }
        @media screen and (min-width: 40em) and (max-width: 63.9375em) {
            .advantages-grid { grid-template-columns: repeat(2, 1fr); }
        }

        /* ===== Scenarios ===== */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .scenario-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .scenario-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-card-hover); }
        .scenario-card .scenario-img {
            height: 180px;
            background: var(--primary);
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .scenario-card .scenario-img .img-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 1rem;
            background: linear-gradient(transparent, rgba(0,0,0,0.5));
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
        }
        .scenario-card .scenario-body { padding: 1.2rem 1.2rem 1.5rem; }
        .scenario-card .scenario-body h4 { font-size: 1.05rem; margin-bottom: 0.4rem; }
        .scenario-card .scenario-body p { color: var(--text-muted); font-size: 0.88rem; margin-bottom: 0; }

        @media screen and (max-width: 39.9375em) {
            .scenarios-grid { grid-template-columns: 1fr; }
        }
        @media screen and (min-width: 40em) and (max-width: 63.9375em) {
            .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
        }

        /* ===== Process / Steps ===== */
        .process-steps {
            display: flex;
            justify-content: space-between;
            gap: 1rem;
            position: relative;
            counter-reset: step;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 5%;
            right: 5%;
            height: 2px;
            background: var(--border);
            z-index: 0;
        }
        .step-item {
            flex: 1;
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--bg-warm);
            padding: 0 0.5rem;
        }
        .step-item .step-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-white);
            border: 2px solid var(--secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--secondary);
            margin: 0 auto 0.8rem;
            transition: background var(--transition), color var(--transition);
        }
        .step-item:hover .step-circle { background: var(--secondary); color: #fff; }
        .step-item h4 { font-size: 1rem; font-weight: 600; margin-bottom: 0.3rem; }
        .step-item p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0; }

        @media screen and (max-width: 39.9375em) {
            .process-steps { flex-direction: column; gap: 1.2rem; }
            .process-steps::before { display: none; }
            .step-item { display: flex; align-items: center; gap: 1rem; text-align: left; padding: 0; }
            .step-item .step-circle { margin: 0; flex-shrink: 0; width: 44px; height: 44px; font-size: 1rem; }
        }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            margin-bottom: 0.8rem;
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-card-hover); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 1.2rem;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-dark);
            font-size: 0.95rem;
            background: var(--bg-white);
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover { background: rgba(201,160,75,0.04); }
        .faq-question .faq-icon {
            color: var(--secondary);
            font-size: 0.9rem;
            transition: transform var(--transition);
            flex-shrink: 0;
            margin-left: 0.8rem;
        }
        .faq-item.open .faq-question .faq-icon { transform: rotate(45deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 1.2rem;
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.2rem 1rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
            padding: 4rem 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(27,40,56,0.75);
            z-index: 1;
        }
        .cta-section .container { position: relative; z-index: 2; text-align: center; }
        .cta-section h2 { color: #fff; font-size: 1.8rem; margin-bottom: 0.8rem; }
        .cta-section p { color: rgba(255,255,255,0.85); font-size: 1.05rem; max-width: 600px; margin: 0 auto 1.8rem; }
        .cta-section .cta-btn {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            border: none;
            padding: 0.8rem 2.5rem;
            border-radius: var(--radius-btn);
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
        }
        .cta-section .cta-btn:hover { background: var(--secondary-hover); transform: translateY(-2px); color: #fff; }
        .cta-section .cta-btn i { margin-right: 0.4rem; }

        @media screen and (max-width: 39.9375em) {
            .cta-section { padding: 2.5rem 0; }
            .cta-section h2 { font-size: 1.3rem; }
            .cta-section p { font-size: 0.9rem; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.8);
            padding: 3rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 0.8rem;
        }
        .footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,0.6); line-height: 1.7; margin-bottom: 1rem; }
        .footer-social { display: flex; gap: 0.8rem; }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.6);
            font-size: 1rem;
            transition: background var(--transition), color var(--transition);
        }
        .footer-social a:hover { background: var(--secondary); color: #fff; }
        .footer-links h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            display: block;
            color: rgba(255,255,255,0.55);
            font-size: 0.85rem;
            padding: 0.3rem 0;
            transition: color var(--transition);
        }
        .footer-links a:hover { color: var(--secondary); }
        .footer-bottom {
            text-align: center;
            padding: 1.2rem 0;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.4);
        }

        @media screen and (max-width: 39.9375em) {
            .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .footer-brand { text-align: center; }
            .footer-social { justify-content: center; }
            .footer-links { text-align: center; }
        }
        @media screen and (min-width: 40em) and (max-width: 63.9375em) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 1rem; }
        .mb-1 { margin-bottom: 1rem; }
        .gold { color: var(--secondary); }
        .bg-white { background: var(--bg-white); }

        /* ===== Back to Top ===== */
        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--secondary);
            color: #fff;
            border: none;
            font-size: 1.1rem;
            cursor: pointer;
            box-shadow: 0 2px 12px rgba(201,160,75,0.3);
            transition: opacity var(--transition), transform var(--transition);
            opacity: 0;
            pointer-events: none;
            z-index: 100;
        }
        .back-to-top.visible { opacity: 1; pointer-events: auto; }
        .back-to-top:hover { transform: translateY(-3px); background: var(--secondary-hover); }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            padding: 1rem 0 0;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--secondary); }
        .breadcrumb span { margin: 0 0.4rem; color: var(--border); }

        @media screen and (max-width: 39.9375em) {
            .back-to-top { bottom: 1rem; right: 1rem; width: 38px; height: 38px; font-size: 0.9rem; }
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1B2838;
            --primary-dark: #0E1A26;
            --secondary: #C9A04B;
            --secondary-hover: #B8912E;
            --bg-warm: #F5F3EE;
            --bg-white: #FFFFFF;
            --text-dark: #1A2A3A;
            --text-body: #2C3E50;
            --text-muted: #6B7A8D;
            --text-light: #FFFFFF;
            --border-light: #D5D8DC;
            --border-focus: #C9A04B;
            --success: #2ECC71;
            --error: #E74C3C;
            --disabled: #BFC9D4;
            --radius-card: 8px;
            --radius-btn: 6px;
            --radius-search: 20px;
            --radius-input: 6px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 4px 16px rgba(0, 0, 0, 0.10);
            --shadow-nav: 0 2px 6px rgba(0, 0, 0, 0.08);
            --transition: 0.2s ease-in-out;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --container-max: 1200px;
            --header-height: 56px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            color: var(--text-body);
            background-color: var(--bg-warm);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--secondary-hover);
        }

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

        button,
        input,
        textarea {
            font-family: var(--font-stack);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        button:focus,
        input:focus,
        textarea:focus {
            outline: none;
            border-color: var(--border-focus);
            box-shadow: 0 0 0 3px rgba(201, 160, 75, 0.2);
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            margin-top: 0;
            line-height: 1.3;
        }

        p {
            margin-top: 0;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            background-color: var(--primary);
            height: var(--header-height);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-nav);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            background-color: var(--secondary);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
            font-size: 1.1rem;
        }

        .logo-text {
            color: var(--text-light);
            font-weight: 700;
            font-size: 1.15rem;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.8rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1rem;
            font-weight: 500;
            padding: 0.3rem 0;
            position: relative;
            transition: color var(--transition);
            text-decoration: none;
        }

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

        .nav-links a:hover {
            color: var(--text-light);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--text-light);
        }
        .nav-links a.active::after {
            width: 100%;
            background-color: var(--secondary);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            background-color: rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-search);
            padding: 0 0.8rem;
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: border-color var(--transition), background-color var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--secondary);
            background-color: rgba(255, 255, 255, 0.18);
        }

        .search-box input {
            background: transparent;
            border: none;
            color: var(--text-light);
            padding: 0.4rem 0;
            font-size: 0.9rem;
            width: 140px;
            outline: none;
        }
        .search-box input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .search-box button {
            background: transparent;
            border: none;
            color: var(--secondary);
            cursor: pointer;
            padding: 0.3rem 0 0.3rem 0.5rem;
            font-size: 0.95rem;
        }

        .nav-auth {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        .nav-auth a {
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.9rem;
            text-decoration: none;
            transition: color var(--transition);
        }
        .nav-auth a:hover {
            color: var(--secondary);
        }

        .btn-nav-cta {
            background-color: var(--secondary);
            color: var(--text-light) !important;
            padding: 0.4rem 1rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: background-color var(--transition);
            text-decoration: none;
        }
        .btn-nav-cta:hover {
            background-color: var(--secondary-hover);
            color: var(--text-light) !important;
        }
        .btn-nav-cta i {
            font-size: 0.8rem;
        }

        /* Hamburger */
        .hamburger {
            display: none;
            background: transparent;
            border: none;
            color: var(--secondary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.2rem;
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 4rem 1rem;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(27, 40, 56, 0.70);
            z-index: 1;
        }

        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }

        .page-hero h1 {
            font-size: 2.5rem;
            color: var(--text-light);
            margin-bottom: 0.8rem;
            font-weight: 700;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }

        .page-hero .hero-sub {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 2rem;
            line-height: 1.6;
        }

        .page-hero .hero-decoration {
            width: 80px;
            height: 3px;
            background-color: var(--secondary);
            margin: 0 auto 1.5rem auto;
            border-radius: 2px;
        }

        .hero-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-primary {
            background-color: var(--secondary);
            color: var(--text-light);
            padding: 0.7rem 2rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid var(--secondary);
            cursor: pointer;
            transition: background-color var(--transition), border-color var(--transition);
            text-decoration: none;
            display: inline-block;
        }
        .btn-primary:hover {
            background-color: var(--secondary-hover);
            border-color: var(--secondary-hover);
            color: var(--text-light);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--text-light);
            padding: 0.7rem 2rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.7);
            cursor: pointer;
            transition: background-color var(--transition), border-color var(--transition);
            text-decoration: none;
            display: inline-block;
        }
        .btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.12);
            border-color: var(--text-light);
            color: var(--text-light);
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: 3.5rem 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        .section-title h2 {
            font-size: 1.75rem;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }
        .section-title .section-divider {
            width: 60px;
            height: 3px;
            background-color: var(--secondary);
            margin: 0.6rem auto 0.8rem auto;
            border-radius: 2px;
        }
        .section-title p {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 620px;
            margin: 0 auto;
        }

        /* ===== Advantages ===== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }

        .advantage-card {
            background-color: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 2rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .advantage-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .advantage-card .adv-icon {
            font-size: 2.2rem;
            color: var(--secondary);
            margin-bottom: 1rem;
        }
        .advantage-card h3 {
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
        }
        .advantage-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== Service Cards ===== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.8rem;
        }

        .service-card {
            background-color: var(--bg-white);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .service-card .card-img {
            height: 180px;
            overflow: hidden;
        }
        .service-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .service-card:hover .card-img img {
            transform: scale(1.04);
        }

        .service-card .card-body {
            padding: 1.4rem 1.5rem 1.8rem;
            flex: 1;
        }
        .service-card .card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 0.5rem;
        }
        .service-card .card-body p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 1rem;
        }
        .service-card .card-body .card-tag {
            display: inline-block;
            background-color: var(--secondary);
            color: var(--text-light);
            font-size: 0.75rem;
            padding: 0.15rem 0.7rem;
            border-radius: 12px;
            font-weight: 500;
            margin-bottom: 0.6rem;
        }
        .service-card .card-body .card-link {
            color: var(--secondary);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            transition: gap var(--transition);
        }
        .service-card .card-body .card-link:hover {
            gap: 0.6rem;
        }
        .service-card .card-body .card-link i {
            font-size: 0.75rem;
        }

        /* ===== Process ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            counter-reset: step;
        }

        .step-item {
            text-align: center;
            position: relative;
            background-color: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 2rem 1.2rem;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .step-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .step-item .step-number {
            width: 44px;
            height: 44px;
            background-color: var(--secondary);
            color: var(--text-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 700;
            margin: 0 auto 1rem auto;
        }

        .step-item h4 {
            font-size: 1.05rem;
            margin-bottom: 0.4rem;
        }
        .step-item p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.5;
            margin-bottom: 0;
        }

        /* ===== Scenarios ===== */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }

        .scenario-card {
            background-color: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 1.8rem 1.5rem;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform var(--transition);
            border-left: 4px solid var(--secondary);
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .scenario-card .scenario-icon {
            font-size: 1.8rem;
            color: var(--secondary);
            margin-bottom: 0.8rem;
        }
        .scenario-card h3 {
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
        }
        .scenario-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.6;
            margin-bottom: 0;
        }

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

        .faq-item {
            background-color: var(--bg-white);
            border-radius: var(--radius-card);
            margin-bottom: 0.8rem;
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .faq-question {
            padding: 1.2rem 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-dark);
            font-size: 1.02rem;
            transition: background-color var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            background-color: rgba(201, 160, 75, 0.06);
        }
        .faq-question .faq-toggle {
            color: var(--secondary);
            font-size: 1.1rem;
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-toggle {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 1.5rem;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 1.5rem 1.2rem 1.5rem;
        }

        /* ===== CTA ===== */
        .cta-block {
            background-color: var(--primary);
            padding: 3rem 2rem;
            border-radius: var(--radius-card);
            text-align: center;
            color: var(--text-light);
        }
        .cta-block h2 {
            color: var(--text-light);
            font-size: 1.75rem;
            margin-bottom: 0.6rem;
        }
        .cta-block p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            margin-bottom: 1.8rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-block .cta-form {
            display: flex;
            gap: 0.8rem;
            justify-content: center;
            flex-wrap: wrap;
            max-width: 520px;
            margin: 0 auto;
        }
        .cta-block .cta-form input {
            flex: 1;
            min-width: 200px;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-input);
            border: 1px solid rgba(255, 255, 255, 0.25);
            background-color: rgba(255, 255, 255, 0.10);
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .cta-block .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .cta-block .cta-form input:focus {
            border-color: var(--secondary);
            background-color: rgba(255, 255, 255, 0.16);
        }
        .cta-block .cta-form .btn-primary {
            padding: 0.7rem 2rem;
            font-size: 1rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background-color: var(--primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-brand .logo-text {
            font-size: 1.25rem;
            display: block;
            margin-bottom: 0.6rem;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 340px;
        }
        .footer-social {
            display: flex;
            gap: 0.8rem;
            margin-top: 1rem;
        }
        .footer-social a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 1.3rem;
            transition: color var(--transition);
        }
        .footer-social a:hover {
            color: var(--secondary);
        }
        .footer-links h4 {
            color: var(--text-light);
            font-size: 1rem;
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            margin-bottom: 0.4rem;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.2rem;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Responsive ===== */
        @media (max-width: 64em) {
            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenarios-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .page-hero h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 40em) {
            .site-header .container {
                padding-left: 0.6rem;
                padding-right: 0.6rem;
            }

            .hamburger {
                display: block;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background-color: var(--primary);
                flex-direction: column;
                padding: 1rem 0 1.2rem;
                gap: 0.2rem;
                box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 0.7rem 1.2rem;
                width: 100%;
                text-align: left;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            .nav-links a::after {
                display: none;
            }
            .nav-links a.active {
                background-color: rgba(201, 160, 75, 0.12);
                color: var(--secondary);
            }

            .nav-right {
                gap: 0.5rem;
            }
            .search-box {
                display: none;
            }
            .nav-auth a {
                font-size: 0.8rem;
            }
            .btn-nav-cta {
                padding: 0.3rem 0.7rem;
                font-size: 0.8rem;
            }

            .page-hero {
                min-height: 300px;
                padding: 2.5rem 0.8rem;
            }
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .page-hero .hero-sub {
                font-size: 1rem;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }

            .section-block {
                padding: 2rem 0;
            }
            .section-title h2 {
                font-size: 1.4rem;
            }

            .advantages-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .services-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .scenarios-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .cta-block {
                padding: 2rem 1rem;
            }
            .cta-block h2 {
                font-size: 1.3rem;
            }
            .cta-block .cta-form input {
                min-width: 100%;
            }
        }

        @media (min-width: 40.1em) and (max-width: 64em) {
            .search-box input {
                width: 100px;
            }
            .nav-links {
                gap: 1rem;
            }
            .nav-links a {
                font-size: 0.9rem;
            }
        }

        /* ===== Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }

        /* ===== Back to Top ===== */
        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 44px;
            height: 44px;
            background-color: var(--secondary);
            color: var(--text-light);
            border: none;
            border-radius: 50%;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
            transition: background-color var(--transition), transform var(--transition);
            z-index: 500;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0.85;
        }
        .back-to-top:hover {
            background-color: var(--secondary-hover);
            transform: translateY(-3px);
            opacity: 1;
        }