/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f2a4a;
            --primary-light: #1a3f6a;
            --primary-dark: #091d35;
            --accent: #c9a84c;
            --accent-light: #dfc06a;
            --accent-dark: #a8882e;
            --bg: #f8f6f1;
            --bg-alt: #f0ede6;
            --text: #1a1a1a;
            --text-weak: #6b6b6b;
            --text-inverse: #ffffff;
            --border: #e0dbd0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(15,42,74,0.08);
            --shadow-hover: 0 12px 40px rgba(15,42,74,0.16);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul { list-style: none; }

        /* ===== Container ===== */
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            transition: var(--transition);
            padding: 0;
        }
        .site-header.nav-glass {
            background: rgba(255,255,255,0.82);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-bottom: 1px solid rgba(255,255,255,0.25);
            box-shadow: 0 2px 20px rgba(15,42,74,0.06);
        }
        .site-header.nav-solid {
            background: #ffffff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 30px rgba(15,42,74,0.08);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .nav-logo {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-logo span { color: var(--accent); }
        .nav-links { display: flex; align-items: center; gap: 32px; }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            padding: 6px 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: var(--transition);
            border-radius: 2px;
        }
        .nav-links a:hover::after,
        .nav-links a.active::after { width: 100%; }
        .nav-links a.active { color: var(--primary); font-weight: 600; }
        .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 8px 22px !important;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .nav-cta:hover { background: var(--primary-light); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(15,42,74,0.25); }
        .nav-toggle { display: none; flex-direction: column; cursor: pointer; gap: 5px; background: none; border: none; padding: 6px; }
        .nav-toggle span { width: 26px; height: 2.5px; background: var(--primary); border-radius: 4px; transition: var(--transition); }

        /* Mobile Nav */
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 24px 32px 32px;
                gap: 18px;
                box-shadow: 0 20px 40px rgba(0,0,0,0.1);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-bottom: 2px solid var(--border);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-toggle { display: flex; }
            .nav-cta { width: 100%; text-align: center; }
        }

        /* ===== Hero ===== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            padding-top: 72px;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,42,74,0.82) 0%, rgba(15,42,74,0.40) 70%, rgba(0,0,0,0.20) 100%);
            z-index: 1;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(201,168,76,0.12) 0%, transparent 70%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            padding: 60px 24px 80px;
            color: #fff;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(201,168,76,0.20);
            border: 1px solid rgba(201,168,76,0.35);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
            color: var(--accent-light);
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 20px;
        }
        .hero h1 span { color: var(--accent); }
        .hero p {
            font-size: 1.15rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.85);
            max-width: 620px;
            margin-bottom: 36px;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
        .hero-actions .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            padding: 14px 38px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-actions .btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(201,168,76,0.35); }
        .hero-actions .btn-outline {
            background: transparent;
            color: #fff;
            padding: 13px 34px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255,255,255,0.4);
            transition: var(--transition);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-actions .btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.08); transform: translateY(-2px); }

        @media (max-width: 768px) {
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-content { padding: 40px 16px 60px; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.6rem; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline { width: 100%; justify-content: center; }
        }

        /* ===== Section Common ===== */
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-alt); }
        .section-dark { background: var(--primary); color: #fff; }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-alt .section-title,
        .section-dark .section-title { color: inherit; }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-weak);
            max-width: 640px;
            margin-bottom: 48px;
            line-height: 1.6;
        }
        .section-dark .section-sub { color: rgba(255,255,255,0.7); }
        .section-center { text-align: center; }
        .section-center .section-sub { margin-left: auto; margin-right: auto; }

        @media (max-width: 768px) {
            .section { padding: 48px 0; }
            .section-title { font-size: 1.6rem; }
            .section-sub { font-size: 0.95rem; margin-bottom: 32px; }
        }

        /* ===== Cards ===== */
        .card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .card-img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
        .card-body { padding: 24px 22px 26px; }
        .card-body h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; color: var(--primary); }
        .card-body p { font-size: 0.92rem; color: var(--text-weak); line-height: 1.6; }
        .card-tag {
            display: inline-block;
            background: rgba(201,168,76,0.12);
            color: var(--accent-dark);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
        }
        .card-link { color: var(--primary); font-weight: 600; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 6px; margin-top: 12px; }
        .card-link:hover { color: var(--accent); }

        @media (max-width: 1024px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 640px) { .card-grid { grid-template-columns: 1fr; gap: 20px; } }

        /* ===== Features / Stats ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
        .stat-item { text-align: center; padding: 32px 16px; background: rgba(255,255,255,0.06); border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.08); }
        .stat-number { font-size: 2.8rem; font-weight: 800; color: var(--accent); line-height: 1.1; margin-bottom: 6px; }
        .stat-label { font-size: 0.95rem; color: rgba(255,255,255,0.7); }
        @media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; } }
        @media (max-width: 480px) { .stats-grid { grid-template-columns: 1fr; } }

        /* ===== Timeline / Process ===== */
        .process-steps { display: flex; flex-wrap: wrap; gap: 20px; justify-content: center; }
        .step-card {
            flex: 1 1 200px;
            max-width: 260px;
            text-align: center;
            padding: 28px 16px;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .step-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
        .step-num {
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            margin: 0 auto 14px;
        }
        .step-card h4 { font-size: 1.05rem; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
        .step-card p { font-size: 0.88rem; color: var(--text-weak); }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--accent); }
        .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.02rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--primary);
            user-select: none;
        }
        .faq-q i { transition: var(--transition); color: var(--text-weak); font-size: 0.9rem; }
        .faq-item.open .faq-q i { transform: rotate(180deg); color: var(--accent); }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-weak);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(201,168,76,0.12) 0%, transparent 70%);
        }
        .cta-box h2 { font-size: 2rem; font-weight: 700; color: #fff; margin-bottom: 14px; position: relative; }
        .cta-box p { color: rgba(255,255,255,0.8); max-width: 560px; margin: 0 auto 28px; position: relative; }
        .cta-box .btn-cta {
            background: var(--accent);
            color: var(--primary-dark);
            padding: 16px 44px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            position: relative;
        }
        .cta-box .btn-cta:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(201,168,76,0.3); }
        @media (max-width: 640px) {
            .cta-box { padding: 36px 20px; }
            .cta-box h2 { font-size: 1.4rem; }
        }

        /* ===== Content List (CMS) ===== */
        .content-list { display: grid; grid-template-columns: 1fr; gap: 16px; }
        .content-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: #fff;
            padding: 18px 22px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .content-item:hover { border-color: var(--accent); box-shadow: var(--shadow); }
        .content-item .ci-meta { flex-shrink: 0; min-width: 80px; }
        .content-item .ci-date { font-size: 0.82rem; color: var(--text-weak); }
        .content-item .ci-cat { font-size: 0.75rem; background: rgba(201,168,76,0.12); color: var(--accent-dark); padding: 2px 10px; border-radius: 12px; display: inline-block; }
        .content-item .ci-title { font-weight: 600; font-size: 1.02rem; color: var(--primary); margin-bottom: 4px; }
        .content-item .ci-title a { color: inherit; }
        .content-item .ci-title a:hover { color: var(--accent); }
        .content-item .ci-excerpt { font-size: 0.88rem; color: var(--text-weak); line-height: 1.6; }
        @media (max-width: 640px) {
            .content-item { flex-direction: column; gap: 8px; }
            .content-item .ci-meta { min-width: auto; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.8);
            padding: 48px 0 32px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
        .footer-brand .nav-logo { color: #fff; margin-bottom: 12px; }
        .footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,0.6); max-width: 300px; line-height: 1.7; }
        .footer-col h4 { font-size: 0.95rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
        .footer-col a { display: block; font-size: 0.88rem; color: rgba(255,255,255,0.6); padding: 4px 0; }
        .footer-col a:hover { color: var(--accent-light); }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 20px; text-align: center; font-size: 0.82rem; color: rgba(255,255,255,0.4); }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent-light); }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 480px) {
            .footer-grid { grid-template-columns: 1fr; }
        }

        /* ===== Utility ===== */
        .text-accent { color: var(--accent); }
        .bg-accent { background: var(--accent); }
        .gap-2 { gap: 8px; }
        .gap-3 { gap: 12px; }
        .gap-4 { gap: 16px; }
        .gap-6 { gap: 24px; }
        .mt-8 { margin-top: 32px; }
        .mb-8 { margin-bottom: 32px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }

        /* ===== Splash tag ===== */
        .tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
        .tag-cloud a {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            background: rgba(201,168,76,0.08);
            color: var(--text);
            border: 1px solid rgba(201,168,76,0.15);
            transition: var(--transition);
        }
        .tag-cloud a:hover { background: var(--accent); color: #fff; border-color: var(--accent); transform: translateY(-1px); }

        /* ===== Scroll reveal ===== */
        .reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
        .reveal.visible { opacity: 1; transform: translateY(0); }

/* roulang page: article */
:root {
            --primary: #1a365d;
            --primary-light: #2d4a7a;
            --primary-dark: #0f2440;
            --accent: #e8b84b;
            --accent-light: #f0d080;
            --accent-dark: #c99a2e;
            --bg-light: #f8f9fb;
            --bg-dark: #0f1724;
            --text-dark: #1a1a2e;
            --text-body: #3d3d5c;
            --text-light: #7a7a9a;
            --border: #e2e6ee;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.07);
            --shadow-lg: 0 20px 50px rgba(0,0,0,0.10);
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background: var(--bg-light);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }
        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 0 24px;
            transition: var(--transition);
            background: rgba(255,255,255,0.82);
            backdrop-filter: blur(18px) saturate(1.4);
            -webkit-backdrop-filter: blur(18px) saturate(1.4);
            border-bottom: 1px solid rgba(255,255,255,0.25);
            box-shadow: 0 1px 20px rgba(0,0,0,0.04);
        }
        .site-header.scrolled {
            background: rgba(255,255,255,0.96);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 30px rgba(0,0,0,0.06);
        }
        .nav-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: -0.3px;
        }
        .nav-logo i {
            font-size: 1.5rem;
            color: var(--accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(26,54,93,0.06);
        }
        .nav-links a.active {
            color: var(--primary);
            background: rgba(26,54,93,0.08);
            font-weight: 600;
        }
        .nav-links a.nav-cta {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 600;
            padding: 8px 22px;
            border-radius: 40px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a.nav-cta:hover {
            background: var(--accent-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(232,184,75,0.3);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--primary-dark);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle:hover span {
            background: var(--accent);
        }
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 24px 20px;
                gap: 6px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 40px rgba(0,0,0,0.08);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-radius: 0 0 var(--radius) var(--radius);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-links a {
                padding: 12px 20px;
                font-size: 1rem;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-links a.nav-cta {
                margin-top: 8px;
                justify-content: center;
            }
            .nav-toggle {
                display: flex;
            }
        }
        @media (max-width: 480px) {
            .nav-inner {
                height: 62px;
            }
            .nav-logo {
                font-size: 1.15rem;
            }
            .nav-logo i {
                font-size: 1.2rem;
            }
            .site-header {
                padding: 0 12px;
            }
        }
        /* ===== 文章页专用 ===== */
        .article-hero {
            padding: 140px 0 50px;
            position: relative;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, #1e3a5f 100%);
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-light), transparent);
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.55);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a {
            color: rgba(255,255,255,0.7);
        }
        .article-breadcrumb a:hover {
            color: var(--accent);
        }
        .article-breadcrumb .sep {
            color: rgba(255,255,255,0.3);
        }
        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            max-width: 900px;
            letter-spacing: -0.5px;
            margin-bottom: 18px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
        }
        .article-meta .badge {
            background: var(--accent);
            color: var(--primary-dark);
            padding: 4px 14px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.8rem;
        }
        .article-meta i {
            margin-right: 5px;
            color: var(--accent);
        }
        .article-body {
            padding: 50px 0 80px;
        }
        .article-content {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 48px;
            max-width: 860px;
            margin: 0 auto;
        }
        .article-content p {
            margin-bottom: 1.6em;
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-body);
        }
        .article-content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin: 2em 0 0.8em;
            letter-spacing: -0.3px;
        }
        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--primary);
            margin: 1.6em 0 0.6em;
        }
        .article-content ul, .article-content ol {
            margin: 1.2em 0;
            padding-left: 1.6em;
        }
        .article-content li {
            margin-bottom: 0.5em;
            line-height: 1.7;
        }
        .article-content img {
            border-radius: var(--radius);
            margin: 2em auto;
            box-shadow: var(--shadow-sm);
        }
        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: #faf8f2;
            padding: 20px 28px;
            margin: 2em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-body);
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: var(--accent-dark);
        }
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .article-not-found .icon {
            font-size: 3.5rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .article-not-found h2 {
            font-size: 1.8rem;
            color: var(--primary-dark);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .article-not-found a {
            display: inline-block;
            padding: 12px 32px;
            background: var(--accent);
            color: var(--primary-dark);
            border-radius: 40px;
            font-weight: 600;
        }
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            margin-top: 40px;
            max-width: 860px;
            margin-left: auto;
            margin-right: auto;
            flex-wrap: wrap;
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 24px;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            flex: 1;
            min-width: 180px;
        }
        .article-nav a:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .article-nav .next {
            text-align: right;
            justify-content: flex-end;
        }
        @media (max-width: 768px) {
            .article-hero {
                padding: 110px 0 40px;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-content {
                padding: 28px 20px;
            }
            .article-content p {
                font-size: 0.98rem;
            }
            .article-nav a {
                min-width: 100%;
            }
        }
        @media (max-width: 480px) {
            .article-hero h1 {
                font-size: 1.3rem;
            }
            .article-meta {
                font-size: 0.8rem;
                gap: 12px;
            }
            .article-content {
                padding: 20px 14px;
                border-radius: var(--radius);
            }
        }
        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.75);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-brand p {
            margin-top: 14px;
            font-size: 0.92rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.5);
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.5);
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.3);
            letter-spacing: 0.3px;
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 40px 0 0;
            }
        }
        /* ===== 通用 ===== */
        .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 0.78rem;
            font-weight: 500;
            background: rgba(26,54,93,0.06);
            color: var(--primary);
            transition: var(--transition);
        }
        .tag:hover {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .tag-accent {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 46px;
            height: 46px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50%;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            z-index: 999;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .back-to-top:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }
        @media (max-width: 480px) {
            .back-to-top {
                bottom: 16px;
                right: 16px;
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0b1a33;
            --primary-light: #13294e;
            --accent: #c9a84c;
            --accent-hover: #dbb95d;
            --accent-soft: rgba(201, 168, 76, 0.12);
            --bg-body: #f5f6f8;
            --bg-card: #ffffff;
            --text-primary: #0b1a33;
            --text-secondary: #4a5568;
            --text-muted: #8896a6;
            --border-light: #e8eaed;
            --shadow-sm: 0 2px 8px rgba(11, 26, 51, 0.06);
            --shadow-md: 0 8px 28px rgba(11, 26, 51, 0.10);
            --shadow-lg: 0 20px 50px rgba(11, 26, 51, 0.14);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --nav-height: 72px;
            --max-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.6;
            padding-top: var(--nav-height);
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }

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

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            transition: background 0.35s ease, box-shadow 0.35s ease;
        }

        .nav-glass {
            background: rgba(255, 255, 255, 0.72);
            backdrop-filter: blur(18px) saturate(1.2);
            -webkit-backdrop-filter: blur(18px) saturate(1.2);
            border-bottom: 1px solid rgba(255, 255, 255, 0.30);
            box-shadow: 0 1px 12px rgba(11, 26, 51, 0.06);
        }

        .nav-glass.scrolled {
            background: rgba(255, 255, 255, 0.92);
            box-shadow: 0 4px 24px rgba(11, 26, 51, 0.10);
            border-bottom: 1px solid var(--border-light);
        }

        .nav-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }

        .nav-logo i {
            font-size: 1.6rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-links a {
            padding: 8px 18px;
            border-radius: 40px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: background 0.25s, color 0.25s, transform 0.2s;
            white-space: nowrap;
        }

        .nav-links a:hover {
            background: var(--accent-soft);
            color: var(--primary);
            transform: translateY(-1px);
        }

        .nav-links a.active {
            background: var(--primary);
            color: #ffffff;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(11, 26, 51, 0.20);
        }

        .nav-links a.nav-cta {
            background: var(--accent);
            color: var(--primary);
            font-weight: 600;
            padding: 8px 22px;
            margin-left: 8px;
            box-shadow: 0 4px 14px rgba(201, 168, 76, 0.30);
        }

        .nav-links a.nav-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(201, 168, 76, 0.40);
        }

        .nav-links a.nav-cta i {
            margin-right: 6px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            background: transparent;
            border: none;
            cursor: pointer;
            border-radius: 8px;
            transition: background 0.2s;
        }

        .nav-toggle:hover {
            background: var(--accent-soft);
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2.5px;
            background: var(--primary);
            border-radius: 4px;
            transition: transform 0.3s, opacity 0.3s;
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        @media (max-width: 820px) {
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.96);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 10px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 16px 40px rgba(11, 26, 51, 0.12);
                transform: translateY(-120%);
                opacity: 0;
                transition: transform 0.4s ease, opacity 0.4s ease;
                pointer-events: none;
            }

            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-links a {
                width: 100%;
                text-align: center;
                padding: 12px 18px;
                font-size: 1.05rem;
            }

            .nav-links a.nav-cta {
                margin-left: 0;
                margin-top: 6px;
            }

            .nav-toggle {
                display: flex;
            }
        }

        @media (max-width: 480px) {
            .nav-logo {
                font-size: 1.25rem;
            }
            .nav-logo i {
                font-size: 1.3rem;
            }
            .nav-inner {
                padding: 0 16px;
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 86vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
            margin-top: calc(-1 * var(--nav-height));
            padding-top: var(--nav-height);
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 26, 51, 0.82) 0%, rgba(11, 26, 51, 0.44) 60%, rgba(11, 26, 51, 0.20) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            padding: 60px 24px 80px;
        }

        .hero-badge {
            display: inline-block;
            background: var(--accent);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 6px 22px;
            border-radius: 40px;
            letter-spacing: 0.3px;
            margin-bottom: 24px;
            box-shadow: 0 4px 16px rgba(201, 168, 76, 0.35);
        }

        .hero-title {
            font-size: 3.6rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.20);
        }

        .hero-title span {
            color: var(--accent);
        }

        .hero-sub {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 660px;
            margin: 0 auto 36px;
            line-height: 1.7;
            font-weight: 400;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        .hero-actions .btn-primary {
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 1.05rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 8px 28px rgba(201, 168, 76, 0.35);
            transition: background 0.3s, transform 0.25s, box-shadow 0.3s;
        }

        .hero-actions .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(201, 168, 76, 0.45);
        }

        .hero-actions .btn-outline-light {
            background: transparent;
            color: #ffffff;
            font-weight: 600;
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 1.05rem;
            border: 2px solid rgba(255, 255, 255, 0.40);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: background 0.3s, border-color 0.3s, transform 0.25s;
        }

        .hero-actions .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.70);
            transform: translateY(-3px);
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: 70vh;
            }
            .hero-title {
                font-size: 2.4rem;
            }
            .hero-sub {
                font-size: 1.05rem;
            }
            .hero-content {
                padding: 40px 16px 60px;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline-light {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }

        @media (max-width: 480px) {
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-sub {
                font-size: 0.95rem;
            }
            .hero-badge {
                font-size: 0.8rem;
                padding: 5px 16px;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: #ffffff;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            text-align: center;
            margin-bottom: 14px;
            letter-spacing: -0.02em;
        }

        .section-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px;
            line-height: 1.7;
        }

        .section-desc strong {
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-desc {
                font-size: 1rem;
                margin-bottom: 36px;
            }
        }

        /* ===== 核心优势卡片 ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .card-advantage {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 36px 28px 30px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: transform 0.3s, box-shadow 0.3s;
            text-align: center;
        }

        .card-advantage:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }

        .card-advantage .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: var(--accent-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.8rem;
            color: var(--accent);
            transition: background 0.3s, transform 0.3s;
        }

        .card-advantage:hover .icon-wrap {
            background: rgba(201, 168, 76, 0.20);
            transform: scale(1.05);
        }

        .card-advantage h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .card-advantage p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        @media (max-width: 900px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 560px) {
            .grid-3 {
                grid-template-columns: 1fr;
            }
            .card-advantage {
                padding: 28px 20px 24px;
            }
        }

        /* ===== 覆盖范围 ===== */
        .cover-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cover-row .cover-img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            overflow: hidden;
        }

        .cover-row .cover-img img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            display: block;
        }

        .cover-row .cover-text h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .cover-row .cover-text p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .cover-row .cover-text ul {
            list-style: none;
            padding: 0;
        }

        .cover-row .cover-text ul li {
            padding: 6px 0 6px 28px;
            position: relative;
            font-size: 0.98rem;
            color: var(--text-primary);
        }

        .cover-row .cover-text ul li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 6px;
            color: var(--accent);
            font-size: 0.85rem;
        }

        @media (max-width: 820px) {
            .cover-row {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cover-row .cover-img img {
                height: 260px;
            }
            .cover-row .cover-text h3 {
                font-size: 1.3rem;
            }
            .cover-row.reverse {
                direction: ltr;
            }
            .cover-row.reverse .cover-img {
                order: 0;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 48px 32px;
            box-shadow: var(--shadow-lg);
        }

        .stat-item {
            text-align: center;
            color: #ffffff;
        }

        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--accent);
            line-height: 1.2;
        }

        .stat-item .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 6px;
        }

        @media (max-width: 820px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                padding: 36px 20px;
                gap: 20px;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 420px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                padding: 28px 16px;
            }
            .stat-item .stat-number {
                font-size: 1.6rem;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }

        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 20px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            text-align: center;
            position: relative;
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .step-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }

        .step-card .step-num {
            counter-increment: step;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent-soft);
            color: var(--accent);
            font-weight: 800;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            transition: background 0.3s, color 0.3s;
        }

        .step-card:hover .step-num {
            background: var(--accent);
            color: var(--primary);
        }

        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        @media (max-width: 900px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 480px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow 0.3s;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: background 0.2s;
        }

        .faq-question:hover {
            background: var(--accent-soft);
        }

        .faq-question .faq-icon {
            font-size: 1rem;
            color: var(--accent);
            transition: transform 0.3s;
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.98rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        @media (max-width: 640px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 0.98rem;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.92rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
            padding: 80px 0;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(11, 26, 51, 0.78);
            z-index: 0;
        }

        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            color: #ffffff;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .cta-content p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: 32px;
        }

        .cta-content .btn-cta {
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            padding: 16px 44px;
            border-radius: 50px;
            font-size: 1.1rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 8px 30px rgba(201, 168, 76, 0.35);
            transition: background 0.3s, transform 0.25s, box-shadow 0.3s;
        }

        .cta-content .btn-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(201, 168, 76, 0.50);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-content h2 {
                font-size: 1.7rem;
            }
            .cta-content p {
                font-size: 1rem;
            }
            .cta-content .btn-cta {
                padding: 14px 32px;
                font-size: 1rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0b1a33;
            color: rgba(255, 255, 255, 0.80);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.10);
        }

        .footer-brand .nav-logo {
            color: #ffffff;
            margin-bottom: 14px;
            font-size: 1.4rem;
        }

        .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            max-width: 360px;
        }

        .footer-col h4 {
            color: #ffffff;
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }

        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.60);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: color 0.25s;
        }

        .footer-col a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.45);
            margin-top: 8px;
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1;
            }
            .site-footer {
                padding: 40px 0 0;
            }
        }

        /* ===== 辅助 ===== */
        .text-accent {
            color: var(--accent);
        }
        .bg-accent-soft {
            background: var(--accent-soft);
        }
        .border-accent {
            border-color: var(--accent);
        }

        .fade-in {
            opacity: 0;
            transform: translateY(24px);
            animation: fadeUp 0.7s ease forwards;
        }
        .fade-in-d1 {
            animation-delay: 0.1s;
        }
        .fade-in-d2 {
            animation-delay: 0.2s;
        }
        .fade-in-d3 {
            animation-delay: 0.3s;
        }
        .fade-in-d4 {
            animation-delay: 0.4s;
        }

        @keyframes fadeUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* 标签 */
        .tag {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent);
            font-weight: 600;
            font-size: 0.8rem;
            padding: 4px 14px;
            border-radius: 40px;
            letter-spacing: 0.2px;
        }

        .tag-light {
            background: rgba(255, 255, 255, 0.12);
            color: #ffffff;
        }

        /* 分隔线 */
        .divider {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 0 auto 20px;
        }

        /* 图片圆角 */
        .img-rounded {
            border-radius: var(--radius-md);
        }

        /* 徽章 */
        .badge-stat {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.10);
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.80);
        }

        /* 带图标的列表 */
        .icon-list {
            list-style: none;
            padding: 0;
        }
        .icon-list li {
            padding: 8px 0 8px 30px;
            position: relative;
            font-size: 0.98rem;
            color: var(--text-secondary);
        }
        .icon-list li::before {
            content: "\f058";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 8px;
            color: var(--accent);
            font-size: 1rem;
        }

        /* 淡入滚动效果 (简单) */
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }