/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f172a;
            --primary-light: #1e293b;
            --primary-dark: #070d18;
            --accent: #3b82f6;
            --accent-hover: #2563eb;
            --accent-light: #dbeafe;
            --gold: #f59e0b;
            --gold-light: #fef3c7;
            --bg: #f8fafc;
            --bg-alt: #f1f5f9;
            --bg-card: #ffffff;
            --text: #1e293b;
            --text-light: #64748b;
            --text-muted: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.10), 0 4px 16px rgba(0,0,0,0.04);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-hover); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; }
        button, input, select, textarea { font: inherit; border: none; outline: none; }
        button { cursor: pointer; background: none; }

        /* ===== Container ===== */
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .container-narrow { max-width: 900px; margin: 0 auto; padding: 0 24px; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(15, 23, 42, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            height: var(--header-height);
            transition: var(--transition);
        }
        .site-header.scrolled { background: rgba(15, 23, 42, 0.98); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: var(--header-height); max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
        }
        .site-logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.35rem; font-weight: 700; color: #fff; letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .site-logo i { color: var(--gold); font-size: 1.5rem; }
        .site-logo span { background: linear-gradient(135deg, #fff 60%, var(--gold)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .site-logo:hover { opacity: 0.9; }
        .nav-main { display: flex; align-items: center; gap: 8px; }
        .nav-main a {
            position: relative;
            padding: 8px 18px; border-radius: var(--radius-sm);
            font-size: 0.92rem; font-weight: 500; color: rgba(255,255,255,0.75);
            transition: var(--transition); letter-spacing: 0.3px;
        }
        .nav-main a:hover { color: #fff; background: rgba(255,255,255,0.08); }
        .nav-main a.active { color: #fff; background: rgba(59,130,246,0.20); }
        .nav-main a.active::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; background: var(--accent); border-radius: 2px; }
        .nav-cta {
            padding: 10px 24px; border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent), #1d4ed8);
            color: #fff !important; font-weight: 600; font-size: 0.92rem;
            box-shadow: 0 4px 16px rgba(59,130,246,0.35);
            transition: var(--transition); letter-spacing: 0.3px;
        }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(59,130,246,0.45); background: linear-gradient(135deg, var(--accent-hover), #1e40af); }
        .nav-cta i { margin-right: 6px; }
        .nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; background: none; border: none; }
        .nav-toggle span { display: block; width: 26px; height: 2.5px; background: #fff; border-radius: 2px; transition: var(--transition); }

        /* ===== Hero ===== */
        .hero {
            position: relative; min-height: 92vh; display: flex; align-items: center;
            padding: 120px 24px 80px; margin-top: var(--header-height);
            background: linear-gradient(135deg, rgba(15,23,42,0.92), rgba(30,41,59,0.80)), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
            background: radial-gradient(ellipse at 20% 50%, rgba(59,130,246,0.15) 0%, transparent 70%),
                        radial-gradient(ellipse at 80% 50%, rgba(245,158,11,0.08) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero-content { position: relative; z-index: 2; max-width: 820px; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            background: rgba(59,130,246,0.20); border: 1px solid rgba(59,130,246,0.25);
            border-radius: 100px; padding: 6px 18px; font-size: 0.82rem; color: var(--accent-light); margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i { color: var(--gold); }
        .hero h1 {
            font-size: clamp(2.2rem, 6vw, 3.8rem); font-weight: 800; line-height: 1.15;
            color: #fff; margin-bottom: 20px; letter-spacing: -0.5px;
        }
        .hero h1 .highlight { background: linear-gradient(135deg, var(--gold), #fbbf24); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero p {
            font-size: clamp(1rem, 2vw, 1.2rem); line-height: 1.8;
            color: rgba(255,255,255,0.75); max-width: 680px; margin-bottom: 36px;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
        .btn-primary {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 16px 36px; border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent), #1d4ed8);
            color: #fff; font-weight: 600; font-size: 1rem;
            box-shadow: 0 8px 32px rgba(59,130,246,0.35);
            transition: var(--transition); border: none;
        }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(59,130,246,0.45); color: #fff; }
        .btn-secondary {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 16px 36px; border-radius: var(--radius-sm);
            background: rgba(255,255,255,0.10); border: 1px solid rgba(255,255,255,0.20);
            color: #fff; font-weight: 500; font-size: 1rem;
            transition: var(--transition); backdrop-filter: blur(4px);
        }
        .btn-secondary:hover { background: rgba(255,255,255,0.18); color: #fff; transform: translateY(-3px); }
        .hero-stats {
            display: flex; flex-wrap: wrap; gap: 40px; margin-top: 56px;
            padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.10);
        }
        .hero-stat { text-align: left; }
        .hero-stat .num { font-size: 2rem; font-weight: 700; color: #fff; }
        .hero-stat .label { font-size: 0.85rem; color: rgba(255,255,255,0.55); margin-top: 2px; }

        /* ===== Section Common ===== */
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-alt); }
        .section-dark { background: var(--primary); color: #fff; }
        .section-header { text-align: center; margin-bottom: 52px; }
        .section-header h2 {
            font-size: clamp(1.6rem, 4vw, 2.4rem); font-weight: 700; letter-spacing: -0.3px;
            color: var(--text); margin-bottom: 12px;
        }
        .section-dark .section-header h2 { color: #fff; }
        .section-header p { font-size: 1.05rem; color: var(--text-light); max-width: 600px; margin: 0 auto; line-height: 1.8; }
        .section-dark .section-header p { color: rgba(255,255,255,0.65); }

        /* ===== Features / Cards ===== */
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        .feature-card {
            background: var(--bg-card); border-radius: var(--radius-md);
            padding: 36px 28px; box-shadow: var(--shadow-sm);
            border: 1px solid var(--border); transition: var(--transition);
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--accent-light); }
        .feature-card .icon {
            width: 56px; height: 56px; border-radius: var(--radius-sm);
            display: flex; align-items: center; justify-content: center;
            font-size: 1.6rem; color: var(--accent); background: var(--accent-light); margin-bottom: 20px;
        }
        .feature-card h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 10px; color: var(--text); }
        .feature-card p { font-size: 0.95rem; color: var(--text-light); line-height: 1.7; }

        /* ===== Service Showcase ===== */
        .showcase {
            display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
        }
        .showcase-img { border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-lg); }
        .showcase-img img { width: 100%; height: 100%; object-fit: cover; min-height: 320px; }
        .showcase-text h3 { font-size: 1.6rem; font-weight: 700; margin-bottom: 16px; color: var(--text); }
        .showcase-text p { font-size: 1rem; color: var(--text-light); line-height: 1.9; margin-bottom: 16px; }
        .showcase-text .tag-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
        .tag {
            display: inline-flex; align-items: center; gap: 6px;
            padding: 6px 16px; border-radius: 100px; font-size: 0.82rem; font-weight: 500;
            background: var(--accent-light); color: var(--accent-hover);
        }
        .tag i { font-size: 0.7rem; }

        /* ===== CMS List ===== */
        .news-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        .news-card {
            display: flex; gap: 20px; background: var(--bg-card); border-radius: var(--radius-md);
            padding: 20px; box-shadow: var(--shadow-sm); border: 1px solid var(--border);
            transition: var(--transition); align-items: flex-start;
        }
        .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--accent-light); }
        .news-card .thumb { width: 120px; min-height: 90px; border-radius: var(--radius-sm); overflow: hidden; flex-shrink: 0; background: var(--bg-alt); }
        .news-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
        .news-card .info { flex: 1; }
        .news-card .info .cat {
            display: inline-block; font-size: 0.75rem; font-weight: 600; color: var(--accent);
            background: var(--accent-light); padding: 2px 12px; border-radius: 100px; margin-bottom: 6px;
        }
        .news-card .info h4 { font-size: 1rem; font-weight: 600; color: var(--text); margin-bottom: 6px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-card .info p { font-size: 0.88rem; color: var(--text-light); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-card .info .meta { font-size: 0.78rem; color: var(--text-muted); margin-top: 8px; display: flex; align-items: center; gap: 12px; }
        .news-card .info .meta i { margin-right: 4px; }
        .empty-news {
            grid-column: 1 / -1; text-align: center; padding: 48px 24px;
            background: var(--bg-card); border-radius: var(--radius-md); color: var(--text-muted); font-size: 1rem;
            border: 1px dashed var(--border);
        }
        .empty-news i { font-size: 2rem; display: block; margin-bottom: 12px; opacity: 0.4; }

        /* ===== Steps ===== */
        .steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; counter-reset: step; }
        .step-card {
            text-align: center; padding: 36px 24px; background: var(--bg-card);
            border-radius: var(--radius-md); box-shadow: var(--shadow-sm); border: 1px solid var(--border);
            transition: var(--transition); position: relative;
        }
        .step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .step-card .step-num {
            width: 48px; height: 48px; border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), #1d4ed8);
            color: #fff; font-size: 1.2rem; font-weight: 700;
            display: flex; align-items: center; justify-content: center; margin: 0 auto 18px;
            box-shadow: 0 4px 16px rgba(59,130,246,0.30);
        }
        .step-card h4 { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; color: var(--text); }
        .step-card p { font-size: 0.92rem; color: var(--text-light); line-height: 1.7; }

        /* ===== Stats ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-card {
            text-align: center; padding: 36px 16px; background: rgba(255,255,255,0.06);
            border-radius: var(--radius-md); border: 1px solid rgba(255,255,255,0.10);
            transition: var(--transition);
        }
        .stat-card:hover { background: rgba(255,255,255,0.10); }
        .stat-card .num { font-size: 2.6rem; font-weight: 700; color: var(--gold); line-height: 1.2; }
        .stat-card .label { font-size: 0.92rem; color: rgba(255,255,255,0.6); margin-top: 6px; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card); border-radius: var(--radius-sm);
            border: 1px solid var(--border); overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--accent-light); }
        .faq-question {
            width: 100%; text-align: left; padding: 18px 24px;
            font-size: 1rem; font-weight: 500; color: var(--text);
            display: flex; justify-content: space-between; align-items: center; gap: 12px;
            background: none; border: none; cursor: pointer; transition: var(--transition);
        }
        .faq-question:hover { background: var(--bg-alt); }
        .faq-question i { font-size: 0.85rem; color: var(--text-muted); transition: var(--transition); flex-shrink: 0; }
        .faq-item.active .faq-question i { transform: rotate(180deg); color: var(--accent); }
        .faq-answer {
            padding: 0 24px; max-height: 0; overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            color: var(--text-light); font-size: 0.95rem; line-height: 1.8;
        }
        .faq-item.active .faq-answer { max-height: 400px; padding: 0 24px 20px; }
        .faq-item.active { border-color: var(--accent-light); }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), #0f1b3d), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            padding: 80px 24px; text-align: center; position: relative;
        }
        .cta-section::before {
            content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
            background: radial-gradient(ellipse at center, rgba(59,130,246,0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-content { position: relative; z-index: 2; max-width: 640px; margin: 0 auto; }
        .cta-content h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); font-weight: 700; color: #fff; margin-bottom: 16px; }
        .cta-content p { font-size: 1.05rem; color: rgba(255,255,255,0.7); margin-bottom: 32px; line-height: 1.8; }
        .cta-content .btn-primary { font-size: 1.05rem; padding: 18px 44px; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark); color: rgba(255,255,255,0.7);
            padding: 48px 24px 24px; border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-inner { max-width: var(--max-width); margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
        .footer-brand .site-logo { font-size: 1.2rem; margin-bottom: 12px; }
        .footer-brand p { font-size: 0.88rem; line-height: 1.8; color: rgba(255,255,255,0.5); max-width: 300px; }
        .footer-col h4 { font-size: 0.92rem; font-weight: 600; color: #fff; margin-bottom: 16px; }
        .footer-col a { display: block; font-size: 0.88rem; color: rgba(255,255,255,0.55); padding: 4px 0; transition: var(--transition); }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            max-width: var(--max-width); margin: 32px auto 0; padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.06);
            display: flex; justify-content: space-between; align-items: 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); }

        /* ===== Mobile Nav ===== */
        @media (max-width: 1024px) {
            .nav-main { gap: 4px; }
            .nav-main a { padding: 8px 14px; font-size: 0.85rem; }
        }
        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            .header-inner { padding: 0 16px; }
            .nav-toggle { display: flex; }
            .nav-main {
                position: absolute; top: var(--header-height); left: 0; right: 0;
                flex-direction: column; background: rgba(15,23,42,0.98);
                backdrop-filter: blur(12px); padding: 16px 24px 24px;
                gap: 6px; border-bottom: 1px solid rgba(255,255,255,0.06);
                display: none; box-shadow: 0 20px 60px rgba(0,0,0,0.3);
            }
            .nav-main.open { display: flex; }
            .nav-main a { width: 100%; padding: 12px 16px; border-radius: var(--radius-sm); }
            .nav-main a.active::after { display: none; }
            .nav-main a.active { background: rgba(59,130,246,0.15); }
            .nav-cta { width: 100%; justify-content: center; text-align: center; margin-top: 8px; }
            .hero { min-height: 80vh; padding: 100px 16px 60px; }
            .hero-stats { gap: 24px; }
            .hero-stat .num { font-size: 1.6rem; }
            .grid-3, .grid-2, .steps-grid, .stats-grid { grid-template-columns: 1fr; }
            .showcase { grid-template-columns: 1fr; gap: 32px; }
            .news-list { grid-template-columns: 1fr; }
            .news-card { flex-direction: column; }
            .news-card .thumb { width: 100%; height: 180px; }
            .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
            .section { padding: 56px 0; }
            .section-header { margin-bottom: 36px; }
            .hero-actions { flex-direction: column; width: 100%; }
            .hero-actions .btn-primary, .hero-actions .btn-secondary { width: 100%; justify-content: center; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.8rem; }
            .hero p { font-size: 0.95rem; }
            .hero-stats { flex-direction: column; gap: 16px; }
            .feature-card { padding: 24px 20px; }
            .news-card .thumb { height: 140px; }
            .footer-inner { grid-template-columns: 1fr; }
            .stat-card .num { font-size: 2rem; }
            .faq-question { font-size: 0.92rem; padding: 14px 16px; }
            .faq-answer { font-size: 0.88rem; }
            .cta-section { padding: 56px 16px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-12 { margin-top: 12px; }
        .mb-12 { margin-bottom: 12px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== Keyframes ===== */
        @keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
        .animate-fade-up { animation: fadeUp 0.6s ease forwards; }
        .animate-delay-1 { animation-delay: 0.1s; }
        .animate-delay-2 { animation-delay: 0.2s; }
        .animate-delay-3 { animation-delay: 0.3s; }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a4a;
            --primary-light: #2c4068;
            --primary-dark: #0f1a30;
            --accent: #c9a84c;
            --accent-light: #dfc16e;
            --accent-dark: #a88a32;
            --bg-body: #f4f5f7;
            --bg-white: #ffffff;
            --bg-light: #eef0f3;
            --bg-dark: #141e2e;
            --text-dark: #1a1a2e;
            --text-body: #3a3a4a;
            --text-muted: #7a7a8a;
            --text-white: #f0f0f0;
            --border-light: #e2e4e8;
            --border-accent: #c9a84c;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.07);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
            --shadow-accent: 0 4px 20px rgba(201,168,76,0.25);
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --max-width: 1200px;
            --header-height: 72px;
            --font-sans: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent-light); }
        a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }

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

        /* ===== Header / 导航 ===== */
        .site-header {
            position: sticky; top: 0; z-index: 1000;
            background: rgba(20,30,46,0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            height: var(--header-height);
            display: flex; align-items: center;
        }
        .header-inner {
            max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
            display: flex; align-items: center; justify-content: space-between;
            width: 100%; height: 100%;
        }
        .site-logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 22px; font-weight: 700; color: var(--text-white);
            letter-spacing: 1px; cursor: pointer;
        }
        .site-logo i { color: var(--accent); font-size: 26px; }
        .site-logo span { background: linear-gradient(135deg,#f0e6c8,#c9a84c); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-main { display: flex; align-items: center; gap: 8px; }
        .nav-main a {
            padding: 8px 18px; border-radius: var(--radius-sm);
            font-size: 15px; font-weight: 500; color: rgba(255,255,255,0.8);
            transition: all var(--transition); position: relative;
        }
        .nav-main a:hover { color: #fff; background: rgba(255,255,255,0.08); }
        .nav-main a.active { color: #fff; background: rgba(201,168,76,0.18); }
        .nav-main a.active::after {
            content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
            width: 20px; height: 3px; background: var(--accent); border-radius: 2px;
        }
        .nav-main a.nav-cta {
            background: linear-gradient(135deg,var(--accent),var(--accent-dark));
            color: #1a1a2e; font-weight: 600; padding: 8px 22px; border-radius: var(--radius-sm);
            box-shadow: var(--shadow-accent); margin-left: 6px;
        }
        .nav-main a.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 6px 28px rgba(201,168,76,0.35); color: #1a1a2e; }
        .nav-main a.nav-cta i { margin-right: 6px; }
        .nav-toggle {
            display: none; flex-direction: column; gap: 5px;
            background: none; border: none; cursor: pointer; padding: 8px;
        }
        .nav-toggle span {
            display: block; width: 26px; height: 2.5px; background: var(--text-white);
            border-radius: 2px; transition: all var(--transition);
        }
        @media (max-width: 820px) {
            .nav-main { display: none; flex-direction: column; background: var(--bg-dark); position: absolute; top: var(--header-height); left: 0; width: 100%; padding: 16px 24px 24px; gap: 4px; border-bottom: 1px solid rgba(255,255,255,0.06); }
            .nav-main.open { display: flex; }
            .nav-toggle { display: flex; }
            .nav-main a { padding: 12px 16px; }
            .nav-main a.nav-cta { margin-left: 0; margin-top: 6px; text-align: center; }
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative; padding: 80px 0 60px;
            background: var(--bg-dark) url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            min-height: 280px; display: flex; align-items: center;
        }
        .article-banner::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg,rgba(15,26,48,0.88) 0%,rgba(26,42,74,0.75) 100%);
        }
        .article-banner .container { position: relative; z-index: 2; width: 100%; }
        .article-breadcrumb {
            font-size: 14px; color: rgba(255,255,255,0.6); margin-bottom: 12px; display: flex; flex-wrap: wrap; gap: 6px;
        }
        .article-breadcrumb a { color: rgba(255,255,255,0.7); }
        .article-breadcrumb a:hover { color: var(--accent); }
        .article-breadcrumb span { color: rgba(255,255,255,0.9); }
        .article-banner h1 {
            font-size: 36px; font-weight: 800; color: #fff; line-height: 1.3;
            max-width: 860px; letter-spacing: 0.5px;
        }
        .article-meta {
            display: flex; flex-wrap: wrap; gap: 20px; margin-top: 16px;
            font-size: 14px; color: rgba(255,255,255,0.7);
        }
        .article-meta i { margin-right: 6px; color: var(--accent); }
        .article-meta .tag {
            display: inline-block; padding: 2px 14px; border-radius: 20px;
            background: rgba(201,168,76,0.2); color: var(--accent-light); font-size: 13px; border: 1px solid rgba(201,168,76,0.3);
        }
        @media (max-width: 768px) {
            .article-banner { padding: 56px 0 40px; min-height: 200px; }
            .article-banner h1 { font-size: 26px; }
            .article-meta { gap: 12px; font-size: 13px; }
        }
        @media (max-width: 520px) {
            .article-banner h1 { font-size: 22px; }
        }

        /* ===== 文章正文 ===== */
        .article-content-wrap {
            padding: 50px 0 60px;
        }
        .article-content-inner {
            background: var(--bg-white); border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md); padding: 48px 56px;
        }
        .article-content-inner article {
            font-size: 17px; line-height: 1.9; color: var(--text-dark);
        }
        .article-content-inner article h2 { font-size: 26px; margin: 36px 0 16px; color: var(--primary); font-weight: 700; }
        .article-content-inner article h3 { font-size: 21px; margin: 28px 0 12px; color: var(--primary-light); font-weight: 600; }
        .article-content-inner article p { margin-bottom: 18px; }
        .article-content-inner article ul,
        .article-content-inner article ol { margin: 16px 0 20px; padding-left: 24px; }
        .article-content-inner article li { margin-bottom: 8px; list-style: disc; }
        .article-content-inner article img { border-radius: var(--radius-md); margin: 24px 0; }
        .article-content-inner article blockquote {
            border-left: 4px solid var(--accent); padding: 16px 24px; margin: 24px 0;
            background: var(--bg-light); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted); font-style: italic;
        }
        .article-content-inner article a { color: var(--accent-dark); font-weight: 500; }
        .article-content-inner article a:hover { text-decoration: underline; }
        .not-found-box {
            text-align: center; padding: 60px 20px;
        }
        .not-found-box i { font-size: 48px; color: var(--text-muted); margin-bottom: 16px; }
        .not-found-box h2 { font-size: 24px; color: var(--text-dark); margin-bottom: 12px; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 24px; }
        .not-found-box .btn { display: inline-block; padding: 12px 32px; background: var(--accent); color: #1a1a2e; border-radius: var(--radius-sm); font-weight: 600; }
        .not-found-box .btn:hover { background: var(--accent-light); color: #1a1a2e; }
        @media (max-width: 768px) {
            .article-content-inner { padding: 28px 20px; }
            .article-content-inner article { font-size: 16px; }
            .article-content-inner article h2 { font-size: 22px; }
            .article-content-inner article h3 { font-size: 18px; }
        }

        /* ===== 推荐阅读 ===== */
        .related-section {
            padding: 60px 0 70px; background: var(--bg-light);
        }
        .related-section .section-title {
            text-align: center; font-size: 28px; font-weight: 700; color: var(--primary);
            margin-bottom: 8px;
        }
        .related-section .section-sub {
            text-align: center; color: var(--text-muted); margin-bottom: 40px; font-size: 15px;
        }
        .related-grid {
            display: grid; grid-template-columns: repeat(3,1fr); gap: 28px;
        }
        .related-card {
            background: var(--bg-white); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); overflow: hidden;
            transition: all var(--transition); cursor: default;
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .related-card .card-img {
            width: 100%; height: 200px; object-fit: cover; display: block;
        }
        .related-card .card-body { padding: 20px 22px 24px; }
        .related-card .card-body h3 { font-size: 17px; font-weight: 600; color: var(--text-dark); margin-bottom: 8px; line-height: 1.4; }
        .related-card .card-body p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }
        .related-card .card-body .card-link {
            display: inline-block; margin-top: 12px; font-size: 14px; font-weight: 500;
            color: var(--accent-dark);
        }
        .related-card .card-body .card-link i { margin-left: 4px; font-size: 12px; transition: transform var(--transition); }
        .related-card:hover .card-body .card-link i { transform: translateX(4px); }
        @media (max-width: 900px) {
            .related-grid { grid-template-columns: repeat(2,1fr); }
        }
        @media (max-width: 560px) {
            .related-grid { grid-template-columns: 1fr; }
            .related-section .section-title { font-size: 22px; }
        }

        /* ===== CTA 区域 ===== */
        .cta-section {
            padding: 70px 0; background: var(--bg-dark);
            background-image: linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 100%);
            text-align: center; position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.06; pointer-events: none;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 {
            font-size: 30px; font-weight: 700; color: #fff; margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 16px; color: rgba(255,255,255,0.7); max-width: 600px;
            margin: 0 auto 28px; line-height: 1.7;
        }
        .cta-section .cta-btn {
            display: inline-block; padding: 14px 44px; font-size: 17px; font-weight: 600;
            background: linear-gradient(135deg,var(--accent),var(--accent-dark));
            color: #1a1a2e; border-radius: var(--radius-sm);
            box-shadow: var(--shadow-accent); transition: all var(--transition);
        }
        .cta-section .cta-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(201,168,76,0.40); color: #1a1a2e; }
        .cta-section .cta-btn i { margin-right: 8px; }
        @media (max-width: 768px) {
            .cta-section { padding: 50px 0; }
            .cta-section h2 { font-size: 24px; }
            .cta-section .cta-btn { padding: 12px 32px; font-size: 15px; }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark); color: rgba(255,255,255,0.7);
            padding: 52px 0 0; border-top: 2px solid rgba(201,168,76,0.2);
        }
        .footer-inner {
            max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
            display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
        }
        .footer-brand .site-logo { margin-bottom: 14px; }
        .footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.6); max-width: 360px; }
        .footer-col h4 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 16px; }
        .footer-col a {
            display: block; font-size: 14px; color: rgba(255,255,255,0.6);
            padding: 5px 0; transition: all var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            max-width: var(--max-width); margin: 36px auto 0; padding: 18px 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
            display: flex; justify-content: space-between; align-items: center;
            flex-wrap: wrap; gap: 8px; font-size: 13px; color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent); }
        @media (max-width: 820px) {
            .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-inner { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 通用按钮 ===== */
        .btn {
            display: inline-block; padding: 12px 28px; font-size: 15px; font-weight: 600;
            border: none; border-radius: var(--radius-sm); cursor: pointer;
            transition: all var(--transition); text-align: center;
        }
        .btn-primary { background: var(--accent); color: #1a1a2e; }
        .btn-primary:hover { background: var(--accent-light); transform: translateY(-1px); color: #1a1a2e; }
        .btn-outline { background: transparent; border: 2px solid var(--accent); color: var(--accent); }
        .btn-outline:hover { background: var(--accent); color: #1a1a2e; }

        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== 响应式微调 ===== */
        @media (max-width: 768px) {
            .article-content-wrap { padding: 30px 0 40px; }
            .related-section { padding: 40px 0 50px; }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --clr-primary: #0d0d1a;
            --clr-primary-light: #1a1a2e;
            --clr-accent: #c9a84c;
            --clr-accent-hover: #dbb95a;
            --clr-accent-light: #f5e9c8;
            --clr-bg: #f8f7f4;
            --clr-white: #ffffff;
            --clr-text: #1a1a2e;
            --clr-text-light: #555570;
            --clr-text-muted: #8888a0;
            --clr-border: #e4e3e0;
            --clr-shadow: rgba(0, 0, 0, 0.06);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-card: 0 4px 20px var(--clr-shadow);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.10);
            --transition: 0.25s ease;
            --max-width: 1200px;
            --header-h: 72px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            background: var(--clr-bg);
            color: var(--clr-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
        input, textarea { font: inherit; border: none; outline: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: var(--clr-primary);
            z-index: 1000;
            height: var(--header-h);
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--clr-white);
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.5px;
        }
        .site-logo i { color: var(--clr-accent); font-size: 1.5rem; }
        .site-logo span { background: linear-gradient(135deg, #f5e9c8, var(--clr-accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-main a {
            color: rgba(255,255,255,0.7);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .nav-main a:hover { color: var(--clr-white); background: rgba(255,255,255,0.07); }
        .nav-main a.active { color: var(--clr-white); background: rgba(201,168,76,0.18); }
        .nav-main a.active::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 20px; height: 2px; background: var(--clr-accent); border-radius: 2px; }
        .nav-main a.nav-cta {
            background: var(--clr-accent);
            color: var(--clr-primary);
            font-weight: 600;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            margin-left: 6px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-main a.nav-cta:hover { background: var(--clr-accent-hover); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(201,168,76,0.35); }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: transparent;
        }
        .nav-toggle span { display: block; width: 26px; height: 2px; background: var(--clr-white); border-radius: 2px; transition: var(--transition); }
        .nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .nav-toggle.open span:nth-child(2) { opacity: 0; }
        .nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* ===== Hero ===== */
        .hero-category {
            margin-top: var(--header-h);
            min-height: 520px;
            display: flex;
            align-items: center;
            position: relative;
            background: linear-gradient(135deg, #0d0d1a 0%, #1a1a2e 40%, #2a2a4e 100%);
            overflow: hidden;
        }
        .hero-category .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.15;
            pointer-events: none;
        }
        .hero-category .container {
            position: relative;
            z-index: 2;
            padding: 80px 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 40px;
        }
        .hero-category .hero-text { flex: 1 1 480px; }
        .hero-category .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(201,168,76,0.18);
            color: var(--clr-accent);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 20px;
            border: 1px solid rgba(201,168,76,0.25);
        }
        .hero-category h1 {
            font-size: clamp(2rem, 5vw, 3.2rem);
            color: var(--clr-white);
            line-height: 1.2;
            margin-bottom: 18px;
        }
        .hero-category h1 span { color: var(--clr-accent); }
        .hero-category p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.75);
            max-width: 600px;
            margin-bottom: 30px;
            line-height: 1.7;
        }
        .hero-category .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
        .hero-category .btn-primary {
            background: var(--clr-accent);
            color: var(--clr-primary);
            padding: 14px 34px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .hero-category .btn-primary:hover { background: var(--clr-accent-hover); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(201,168,76,0.35); }
        .hero-category .btn-outline {
            background: transparent;
            color: var(--clr-white);
            padding: 14px 34px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 1rem;
            border: 1px solid rgba(255,255,255,0.25);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .hero-category .btn-outline:hover { background: rgba(255,255,255,0.08); border-color: var(--clr-accent); color: var(--clr-accent); }
        .hero-category .hero-visual {
            flex: 0 0 320px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0,0,0,0.4);
            border: 1px solid rgba(255,255,255,0.06);
        }
        .hero-category .hero-visual img { width: 100%; height: auto; display: block; }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 50px;
        }
        .section-header h2 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            color: var(--clr-text);
            margin-bottom: 14px;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--clr-text-light);
            line-height: 1.7;
        }
        .section-header .section-tag {
            display: inline-block;
            background: var(--clr-accent-light);
            color: var(--clr-accent);
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            border: 1px solid rgba(201,168,76,0.2);
        }

        /* ===== Why Section (卖点) ===== */
        .why-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 28px;
        }
        .why-card {
            background: var(--clr-white);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            border: 1px solid var(--clr-border);
            text-align: center;
        }
        .why-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--clr-accent); }
        .why-card .icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--clr-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.6rem;
            color: var(--clr-accent);
        }
        .why-card h3 { font-size: 1.15rem; margin-bottom: 10px; color: var(--clr-text); }
        .why-card p { font-size: 0.92rem; color: var(--clr-text-light); line-height: 1.6; }

        /* ===== Steps / Flow ===== */
        .steps-section { background: var(--clr-white); }
        .steps-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 30px;
            counter-reset: step;
        }
        .step-item {
            flex: 1 1 180px;
            max-width: 220px;
            text-align: center;
            position: relative;
        }
        .step-item::after {
            content: '';
            position: absolute;
            top: 40px;
            right: -18px;
            width: 24px;
            height: 2px;
            background: var(--clr-border);
        }
        .step-item:last-child::after { display: none; }
        .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--clr-accent);
            color: var(--clr-primary);
            font-weight: 700;
            font-size: 1.4rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 14px rgba(201,168,76,0.25);
        }
        .step-item h4 { font-size: 1.05rem; margin-bottom: 6px; color: var(--clr-text); }
        .step-item p { font-size: 0.88rem; color: var(--clr-text-light); line-height: 1.5; }

        /* ===== Feature Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 28px;
        }
        .feature-card {
            background: var(--clr-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            border: 1px solid var(--clr-border);
        }
        .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .feature-card img { width: 100%; height: 180px; object-fit: cover; }
        .feature-card .body { padding: 22px 20px; }
        .feature-card .body h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .feature-card .body p { font-size: 0.9rem; color: var(--clr-text-light); line-height: 1.6; }
        .feature-card .body .tag {
            display: inline-block;
            background: var(--clr-accent-light);
            color: var(--clr-accent);
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-top: 10px;
        }

        /* ===== Scenarios ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
        }
        .scenario-card {
            background: var(--clr-white);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            box-shadow: var(--shadow-card);
            border-left: 4px solid var(--clr-accent);
            transition: var(--transition);
        }
        .scenario-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .scenario-card i { font-size: 1.8rem; color: var(--clr-accent); margin-bottom: 12px; }
        .scenario-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
        .scenario-card p { font-size: 0.9rem; color: var(--clr-text-light); line-height: 1.6; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--clr-white);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--clr-border);
            overflow: hidden;
        }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .faq-question:hover { background: rgba(201,168,76,0.04); }
        .faq-question i { color: var(--clr-accent); transition: var(--transition); font-size: 0.9rem; }
        .faq-question.open i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.92rem;
            color: var(--clr-text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--clr-primary);
            position: relative;
            overflow: hidden;
        }
        .cta-section .cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-section .container { position: relative; z-index: 2; text-align: center; padding: 70px 24px; }
        .cta-section h2 { color: var(--clr-white); font-size: clamp(1.5rem, 3vw, 2.2rem); margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.7); font-size: 1.05rem; max-width: 560px; margin: 0 auto 30px; line-height: 1.7; }
        .cta-section .cta-btn {
            background: var(--clr-accent);
            color: var(--clr-primary);
            padding: 16px 44px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.1rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .cta-section .cta-btn:hover { background: var(--clr-accent-hover); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(201,168,76,0.35); }

        /* ===== Footer ===== */
        .site-footer {
            background: #0a0a16;
            color: rgba(255,255,255,0.7);
            padding: 60px 24px 20px;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
        }
        .footer-brand .site-logo { font-size: 1.3rem; margin-bottom: 14px; color: var(--clr-white); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 340px; color: rgba(255,255,255,0.55); }
        .footer-col h4 { color: var(--clr-white); font-size: 0.95rem; margin-bottom: 16px; font-weight: 600; }
        .footer-col a { display: block; color: rgba(255,255,255,0.5); font-size: 0.88rem; padding: 4px 0; transition: var(--transition); }
        .footer-col a:hover { color: var(--clr-accent); padding-left: 4px; }
        .footer-bottom {
            max-width: var(--max-width);
            margin: 40px auto 0;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.06);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.35);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--clr-accent); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-category .hero-visual { flex: 0 0 260px; }
            .footer-inner { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav-main {
                position: fixed;
                top: var(--header-h);
                left: 0;
                width: 100%;
                background: var(--clr-primary);
                flex-direction: column;
                padding: 20px 24px;
                gap: 6px;
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                box-shadow: 0 20px 40px rgba(0,0,0,0.4);
                border-top: 1px solid rgba(255,255,255,0.06);
            }
            .nav-main.open { transform: translateY(0); opacity: 1; }
            .nav-main a { width: 100%; padding: 12px 18px; }
            .nav-main a.nav-cta { margin-left: 0; justify-content: center; }
            .nav-toggle { display: flex; }
            .hero-category { min-height: 400px; }
            .hero-category .container { padding: 50px 24px; }
            .hero-category .hero-visual { display: none; }
            .section { padding: 50px 0; }
            .section-header { margin-bottom: 30px; }
            .why-grid { grid-template-columns: 1fr 1fr; }
            .steps-grid { gap: 20px; }
            .step-item { flex: 1 1 140px; max-width: 160px; }
            .step-item::after { display: none; }
            .feature-grid { grid-template-columns: 1fr 1fr; }
            .scenario-grid { grid-template-columns: 1fr 1fr; }
            .footer-inner { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
        }
        @media (max-width: 520px) {
            .why-grid { grid-template-columns: 1fr; }
            .feature-grid { grid-template-columns: 1fr; }
            .scenario-grid { grid-template-columns: 1fr; }
            .hero-category h1 { font-size: 1.6rem; }
            .hero-category p { font-size: 0.95rem; }
            .step-item { flex: 1 1 100%; max-width: 100%; }
            .steps-grid { flex-direction: column; align-items: center; }
            .cta-section .cta-btn { width: 100%; justify-content: center; }
        }
        @media (max-width: 480px) {
            .header-inner { padding: 0 16px; }
            .site-logo { font-size: 1.1rem; }
            .site-logo i { font-size: 1.2rem; }
            .hero-category .container { padding: 40px 16px; }
            .section { padding: 36px 0; }
            .container { padding: 0 16px; }
            .faq-question { padding: 14px 16px; font-size: 0.92rem; }
            .faq-answer { padding: 0 16px 14px; }
        }