/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --secondary: #e8a838;
            --secondary-light: #f0c060;
            --secondary-dark: #c88a20;
            --accent: #d9534f;
            --bg-light: #f8f9fa;
            --bg-dark: #1a1a2e;
            --bg-card: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #8a8aaa;
            --text-white: #ffffff;
            --border-color: #e0e0e8;
            --border-radius: 12px;
            --border-radius-sm: 8px;
            --border-radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-hover: 0 8px 32px rgba(0,0,0,0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --spacing-xl: 6rem;
            --max-width: 1200px;
        }

        /* ===== 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);
            color: var(--text-primary);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--secondary); }
        a:focus-visible { outline: 3px solid var(--secondary); outline-offset: 2px; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--border-radius-sm); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; color: var(--text-primary); }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.2rem; margin-bottom: var(--spacing-sm); }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--spacing-sm); }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
            padding: 0.75rem 2rem; border-radius: 50px; font-weight: 600; font-size: 1rem;
            border: 2px solid transparent; cursor: pointer; transition: var(--transition);
            text-align: center; line-height: 1.4; letter-spacing: 0.01em;
        }
        .btn-primary { background: var(--secondary); color: var(--text-primary); border-color: var(--secondary); }
        .btn-primary:hover { background: var(--secondary-dark); border-color: var(--secondary-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-sm); }
        .btn-outline { background: transparent; color: var(--text-white); border-color: var(--text-white); }
        .btn-outline:hover { background: var(--text-white); color: var(--primary); transform: translateY(-2px); }
        .btn-accent { background: var(--accent); color: #fff; border-color: var(--accent); }
        .btn-accent:hover { background: #c9302c; border-color: #c9302c; transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-lg { padding: 1rem 2.8rem; font-size: 1.15rem; }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block; padding: 0.25rem 1rem; border-radius: 50px;
            font-size: 0.8rem; font-weight: 600; letter-spacing: 0.02em;
            background: var(--secondary); color: var(--text-primary);
        }
        .badge-primary { background: var(--primary); color: var(--text-white); }
        .badge-light { background: rgba(232,168,56,0.15); color: var(--secondary-dark); }
        .tag {
            display: inline-block; padding: 0.2rem 0.8rem; border-radius: var(--border-radius-sm);
            font-size: 0.75rem; font-weight: 500; background: var(--bg-light); color: var(--text-secondary);
            border: 1px solid var(--border-color); transition: var(--transition);
        }
        .tag:hover { background: var(--secondary); color: #fff; border-color: var(--secondary); }

        /* ===== Card ===== */
        .card {
            background: var(--bg-card); border-radius: var(--border-radius);
            padding: var(--spacing-md); box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color); transition: var(--transition);
        }
        .card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
        .card-image { border-radius: var(--border-radius-sm) var(--border-radius-sm) 0 0; overflow: hidden; }
        .card-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 0.5rem; }
        .card-text { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.6; }

        /* ===== Section Spacing ===== */
        .section { padding: var(--spacing-lg) 0; }
        .section-title { text-align: center; margin-bottom: var(--spacing-md); }
        .section-title h2 { position: relative; display: inline-block; }
        .section-title h2::after {
            content: ''; display: block; width: 60px; height: 4px; background: var(--secondary);
            margin: 0.75rem auto 0; border-radius: 2px;
        }
        .section-subtitle { font-size: 1.1rem; color: var(--text-light); max-width: 600px; margin: 0 auto; text-align: center; }

        /* ===== Header & Navigation ===== */
        .site-header {
            background: var(--bg-card); border-bottom: 1px solid var(--border-color);
            position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 12px rgba(0,0,0,0.04);
        }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            max-width: var(--max-width); margin: 0 auto; padding: 0.75rem var(--spacing-sm);
        }
        .site-logo {
            font-size: 1.5rem; font-weight: 800; color: var(--primary);
            letter-spacing: -0.01em; white-space: nowrap;
        }
        .site-logo span { color: var(--secondary); }
        .site-logo:hover { color: var(--primary); opacity: 0.9; }
        .nav-wrap { display: flex; align-items: center; gap: 0.25rem; }
        .nav-wrap a {
            display: inline-block; padding: 0.5rem 1.2rem; font-size: 0.95rem; font-weight: 500;
            color: var(--text-secondary); border-radius: 50px; transition: var(--transition);
        }
        .nav-wrap a:hover { background: rgba(232,168,56,0.1); color: var(--secondary-dark); }
        .nav-wrap a.active { background: var(--primary); color: var(--text-white); }
        .nav-cta { background: var(--secondary) !important; color: var(--text-primary) !important; font-weight: 700; }
        .nav-cta:hover { background: var(--secondary-dark) !important; color: #fff !important; transform: translateY(-1px); }
        .menu-toggle { display: none; background: none; border: none; font-size: 1.6rem; color: var(--primary); cursor: pointer; padding: 0.25rem; }

        /* ===== Hero ===== */
        .hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: var(--spacing-xl) 0; position: relative; overflow: hidden;
        }
        .hero::before {
            content: ''; position: absolute; top: -50%; right: -20%; width: 600px; height: 600px;
            background: radial-gradient(circle, rgba(232,168,56,0.12) 0%, transparent 70%); border-radius: 50%;
        }
        .hero::after {
            content: ''; position: absolute; bottom: -30%; left: -10%; width: 400px; height: 400px;
            background: radial-gradient(circle, rgba(255,255,255,0.04) 0%, transparent 70%); border-radius: 50%;
        }
        .hero .container { position: relative; z-index: 1; }
        .hero-content { max-width: 720px; }
        .hero h1 { color: var(--text-white); font-size: 3.2rem; margin-bottom: 1.2rem; line-height: 1.15; }
        .hero h1 span { color: var(--secondary); }
        .hero p { color: rgba(255,255,255,0.8); font-size: 1.2rem; max-width: 580px; margin-bottom: 2rem; line-height: 1.7; }
        .hero-actions { display: flex; gap: var(--spacing-sm); flex-wrap: wrap; }
        .hero-stats { display: flex; gap: var(--spacing-md); margin-top: var(--spacing-md); flex-wrap: wrap; }
        .hero-stat { text-align: center; }
        .hero-stat .num { font-size: 2rem; font-weight: 800; color: var(--secondary); display: block; }
        .hero-stat .label { font-size: 0.85rem; color: rgba(255,255,255,0.7); }

        /* ===== Features / Steps ===== */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); }
        .feature-card { text-align: center; padding: var(--spacing-md); }
        .feature-icon { width: 64px; height: 64px; margin: 0 auto var(--spacing-sm); background: rgba(232,168,56,0.1); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.6rem; color: var(--secondary); }
        .feature-card h3 { margin-bottom: 0.5rem; }
        .feature-card p { font-size: 0.95rem; margin-bottom: 0; }

        /* ===== Steps ===== */
        .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-md); position: relative; }
        .step-item { text-align: center; position: relative; }
        .step-num { width: 48px; height: 48px; margin: 0 auto var(--spacing-sm); background: var(--primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 1.2rem; }
        .step-item.active .step-num { background: var(--secondary); color: var(--text-primary); }
        .step-item h4 { margin-bottom: 0.3rem; }
        .step-item p { font-size: 0.85rem; margin-bottom: 0; }

        /* ===== Category Cards ===== */
        .category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--spacing-md); }
        .category-card { display: flex; align-items: center; gap: var(--spacing-md); padding: var(--spacing-md); background: var(--bg-card); border-radius: var(--border-radius); border: 1px solid var(--border-color); box-shadow: var(--shadow-sm); transition: var(--transition); }
        .category-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
        .category-icon { width: 64px; height: 64px; flex-shrink: 0; background: rgba(26,58,92,0.06); border-radius: var(--border-radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1.8rem; color: var(--primary); }
        .category-card h3 { font-size: 1.1rem; margin-bottom: 0.25rem; }
        .category-card p { font-size: 0.85rem; color: var(--text-light); margin-bottom: 0; }

        /* ===== Post List ===== */
        .post-list { display: grid; grid-template-columns: 1fr; gap: var(--spacing-sm); }
        .post-item { display: flex; align-items: flex-start; gap: var(--spacing-sm); padding: var(--spacing-sm); background: var(--bg-card); border-radius: var(--border-radius-sm); border: 1px solid var(--border-color); transition: var(--transition); }
        .post-item:hover { box-shadow: var(--shadow-sm); border-color: var(--secondary); }
        .post-date { flex-shrink: 0; width: 70px; text-align: center; }
        .post-date .day { font-size: 1.6rem; font-weight: 800; color: var(--primary); display: block; line-height: 1; }
        .post-date .month { font-size: 0.75rem; color: var(--text-light); text-transform: uppercase; }
        .post-info { flex: 1; }
        .post-info h4 { font-size: 1.05rem; margin-bottom: 0.15rem; }
        .post-info h4 a { color: var(--text-primary); }
        .post-info h4 a:hover { color: var(--secondary); }
        .post-info .meta { font-size: 0.8rem; color: var(--text-light); }
        .post-info .excerpt { font-size: 0.9rem; color: var(--text-secondary); margin-top: 0.3rem; }

        /* ===== FAQ ===== */
        .faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-sm); }
        .faq-item { background: var(--bg-card); border-radius: var(--border-radius-sm); padding: var(--spacing-sm); border: 1px solid var(--border-color); transition: var(--transition); }
        .faq-item:hover { border-color: var(--secondary); box-shadow: var(--shadow-sm); }
        .faq-question { font-weight: 700; font-size: 1rem; margin-bottom: 0.3rem; display: flex; align-items: center; gap: 0.5rem; color: var(--text-primary); }
        .faq-question i { color: var(--secondary); font-size: 0.9rem; }
        .faq-answer { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; padding-left: 1.6rem; }

        /* ===== CTA ===== */
        .cta-section { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); padding: var(--spacing-lg) 0; text-align: center; }
        .cta-section h2 { color: var(--text-white); margin-bottom: 0.5rem; }
        .cta-section p { color: rgba(255,255,255,0.85); font-size: 1.1rem; max-width: 540px; margin: 0 auto var(--spacing-md); }

        /* ===== Footer ===== */
        .site-footer { background: var(--primary-dark); color: rgba(255,255,255,0.8); padding: var(--spacing-lg) 0 var(--spacing-md); }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--spacing-md); }
        .footer-brand .site-logo { color: #fff; font-size: 1.3rem; margin-bottom: 0.75rem; display: inline-block; }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.6); max-width: 300px; }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 0.75rem; }
        .footer-col a { display: block; font-size: 0.9rem; color: rgba(255,255,255,0.6); padding: 0.2rem 0; }
        .footer-col a:hover { color: var(--secondary); }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); margin-top: var(--spacing-md); padding-top: var(--spacing-sm); text-align: center; font-size: 0.85rem; color: rgba(255,255,255,0.4); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); gap: var(--spacing-sm); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            :root { --spacing-lg: 2.5rem; --spacing-xl: 4rem; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .menu-toggle { display: block; }
            .nav-wrap { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--bg-card); flex-direction: column; padding: var(--spacing-sm); border-bottom: 1px solid var(--border-color); box-shadow: var(--shadow-md); }
            .nav-wrap.open { display: flex; }
            .nav-wrap a { width: 100%; text-align: center; }
            .features-grid { grid-template-columns: 1fr 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr 1fr; }
            .faq-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; text-align: center; }
            .footer-brand p { max-width: 100%; }
            .hero-stats { justify-content: center; }
            .hero-actions { justify-content: center; }
            .post-item { flex-direction: column; }
            .post-date { width: auto; text-align: left; display: flex; gap: 0.5rem; align-items: center; }
            .post-date .day { font-size: 1.2rem; }
        }
        @media (max-width: 520px) {
            .features-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .hero h1 { font-size: 1.6rem; }
            .btn-lg { padding: 0.75rem 1.8rem; font-size: 1rem; }
            .section-title h2::after { width: 40px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: var(--spacing-sm); }
        .mt-2 { margin-top: var(--spacing-md); }
        .mb-1 { margin-bottom: var(--spacing-sm); }
        .mb-2 { margin-bottom: var(--spacing-md); }
        .gap-1 { gap: var(--spacing-sm); }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .bg-white { background: var(--bg-card); }
        .bg-light { background: var(--bg-light); }

        /* divider */
        .divider { width: 60px; height: 3px; background: var(--secondary); border-radius: 2px; margin: 1rem auto; }

/* roulang page: article */
:root {
            --primary: #0d2b4e;
            --primary-light: #1a4a7a;
            --primary-dark: #081c33;
            --accent: #f0b90b;
            --accent-light: #fcd33c;
            --accent-dark: #c99a08;
            --cta: #dc3545;
            --cta-hover: #c82333;
            --bg: #f4f6f9;
            --bg-alt: #eef1f5;
            --bg-dark: #0d2b4e;
            --white: #ffffff;
            --text: #1a1a2e;
            --text-light: #6c757d;
            --text-muted: #9ca3af;
            --border: #e5e9f0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 18px;
            --shadow: 0 4px 20px rgba(13, 43, 78, 0.08);
            --shadow-hover: 0 12px 40px rgba(13, 43, 78, 0.15);
            --shadow-lg: 0 20px 60px rgba(13, 43, 78, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --container: 1200px;
            --nav-height: 72px;
        }
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
        html{scroll-behavior:smooth;}
        body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased;}
        a{color:var(--primary-light);text-decoration:none;transition:var(--transition);}
        a:hover{color:var(--accent);}
        img{max-width:100%;height:auto;display:block;border-radius:var(--radius-sm);}
        ul,ol{list-style:none;padding:0;margin:0;}
        h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:var(--text);margin-bottom:0.6rem;}
        h1{font-size:2.2rem;}
        h2{font-size:1.8rem;}
        h3{font-size:1.4rem;}
        h4{font-size:1.15rem;}
        p{margin-bottom:1rem;color:var(--text-light);}
        .container{max-width:var(--container);margin:0 auto;padding:0 1.5rem;width:100%;}
        .section{padding:4.5rem 0;}
        .section-alt{background:var(--bg-alt);}
        .section-dark{background:var(--bg-dark);color:var(--white);}
        .text-center{text-align:center;}
        .text-accent{color:var(--accent);}
        .mb-1{margin-bottom:1rem;}
        .mb-2{margin-bottom:2rem;}
        .mb-3{margin-bottom:3rem;}
        .mt-2{margin-top:2rem;}
        .gap-1{gap:1rem;}
        .gap-2{gap:2rem;}
        .flex{display:flex;}
        .flex-wrap{flex-wrap:wrap;}
        .flex-center{align-items:center;justify-content:center;}
        .flex-between{justify-content:space-between;align-items:center;}
        .grid-2{display:grid;grid-template-columns:1fr 1fr;gap:2rem;}
        .grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:2rem;}
        .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:0.5rem;padding:0.75rem 2rem;border-radius:50px;font-weight:600;font-size:1rem;border:none;cursor:pointer;transition:var(--transition);text-decoration:none;line-height:1.4;}
        .btn-primary{background:var(--accent);color:var(--primary-dark);box-shadow:0 4px 15px rgba(240,185,11,0.35);}
        .btn-primary:hover{background:var(--accent-light);color:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 30px rgba(240,185,11,0.45);}
        .btn-outline{background:transparent;color:var(--white);border:2px solid rgba(255,255,255,0.4);}
        .btn-outline:hover{background:var(--white);color:var(--primary);border-color:var(--white);transform:translateY(-2px);}
        .btn-cta{background:var(--cta);color:var(--white);box-shadow:0 4px 15px rgba(220,53,69,0.3);}
        .btn-cta:hover{background:var(--cta-hover);color:var(--white);transform:translateY(-2px);box-shadow:0 8px 30px rgba(220,53,69,0.4);}
        .btn-sm{padding:0.5rem 1.2rem;font-size:0.85rem;}
        .badge{display:inline-block;padding:0.25rem 0.8rem;border-radius:50px;font-size:0.75rem;font-weight:600;background:rgba(240,185,11,0.15);color:var(--accent-dark);}
        .badge-primary{background:rgba(13,43,78,0.1);color:var(--primary);}
        .badge-white{background:rgba(255,255,255,0.2);color:var(--white);}
        .card{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:var(--transition);}
        .card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);}
        .card-body{padding:1.5rem;}
        .card-img{width:100%;height:200px;object-fit:cover;border-radius:var(--radius-sm) var(--radius-sm) 0 0;}
        .divider{height:1px;background:var(--border);margin:2rem 0;width:100%;}
        .tag{display:inline-block;padding:0.2rem 0.7rem;border-radius:50px;font-size:0.75rem;background:var(--bg-alt);color:var(--text-light);margin:0.15rem;transition:var(--transition);}
        .tag:hover{background:var(--accent);color:var(--primary-dark);}
        .page-title{font-size:2.4rem;font-weight:800;margin-bottom:0.5rem;line-height:1.2;}
        .page-subtitle{font-size:1.1rem;color:var(--text-light);max-width:700px;margin:0 auto 1.5rem;}
        .meta-row{display:flex;flex-wrap:wrap;gap:0.8rem 1.5rem;align-items:center;font-size:0.9rem;color:var(--text-light);}
        .meta-row i{margin-right:0.3rem;color:var(--accent);}
        /* Header & Nav */
        .site-header{background:var(--white);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:1000;height:var(--nav-height);box-shadow:0 2px 20px rgba(13,43,78,0.06);}
        .header-inner{display:flex;align-items:center;justify-content:center;height:100%;position:relative;max-width:var(--container);margin:0 auto;padding:0 1.5rem;}
        .nav-center{display:flex;align-items:center;gap:2.5rem;}
        .nav-links{display:flex;align-items:center;gap:0.2rem;}
        .nav-links a{display:block;padding:0.5rem 1rem;border-radius:50px;font-size:0.95rem;font-weight:500;color:var(--text);transition:var(--transition);text-decoration:none;}
        .nav-links a:hover{background:rgba(13,43,78,0.05);color:var(--primary-light);}
        .nav-links a.active{background:var(--primary);color:var(--white);}
        .nav-links a.nav-cta{background:var(--accent);color:var(--primary-dark);font-weight:700;padding:0.5rem 1.4rem;box-shadow:0 2px 10px rgba(240,185,11,0.25);}
        .nav-links a.nav-cta:hover{background:var(--accent-light);transform:translateY(-1px);box-shadow:0 6px 20px rgba(240,185,11,0.35);}
        .site-logo{font-size:1.35rem;font-weight:800;color:var(--primary);text-decoration:none;display:flex;align-items:center;gap:0.3rem;white-space:nowrap;}
        .site-logo span{color:var(--accent);}
        .site-logo i{font-size:1.5rem;color:var(--accent);}
        .logo-center{position:absolute;left:50%;transform:translateX(-50%);}
        .nav-toggle{display:none;background:none;border:none;font-size:1.6rem;color:var(--primary);cursor:pointer;padding:0.3rem;position:absolute;right:1rem;top:50%;transform:translateY(-50%);z-index:1001;}
        /* Article Hero */
        .article-hero{padding:3rem 0 1rem;background:var(--white);border-bottom:1px solid var(--border);}
        .article-header{max-width:860px;margin:0 auto;text-align:center;}
        .article-header h1{font-size:2.2rem;font-weight:800;margin-bottom:1rem;color:var(--primary);}
        .article-body{padding:2.5rem 0 3rem;background:var(--white);}
        .article-content{max-width:860px;margin:0 auto;font-size:1.05rem;line-height:1.9;color:var(--text);}
        .article-content p{margin-bottom:1.2rem;color:var(--text);}
        .article-content h2,.article-content h3{margin-top:2rem;margin-bottom:0.8rem;color:var(--primary);}
        .article-content ul,.article-content ol{padding-left:1.5rem;margin-bottom:1.2rem;list-style:disc;}
        .article-content ol{list-style:decimal;}
        .article-content li{margin-bottom:0.4rem;color:var(--text-light);}
        .article-content img{border-radius:var(--radius);margin:1.5rem 0;box-shadow:var(--shadow);}
        .article-content blockquote{border-left:4px solid var(--accent);padding:1rem 1.5rem;margin:1.5rem 0;background:var(--bg-alt);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-light);}
        .article-footer{max-width:860px;margin:2rem auto 0;padding-top:1.5rem;border-top:1px solid var(--border);display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;align-items:center;}
        .article-tags{display:flex;flex-wrap:wrap;gap:0.4rem;}
        .article-share{display:flex;gap:0.6rem;align-items:center;}
        .article-share a{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:var(--bg-alt);color:var(--text-light);transition:var(--transition);font-size:1rem;}
        .article-share a:hover{background:var(--accent);color:var(--primary-dark);}
        /* Related */
        .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.8rem;}
        .related-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition);text-decoration:none;color:var(--text);display:flex;flex-direction:column;}
        .related-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-5px);color:var(--text);}
        .related-card-img{height:180px;background:linear-gradient(135deg,var(--primary),var(--primary-light));display:flex;align-items:center;justify-content:center;color:var(--white);font-size:2.5rem;}
        .related-card-body{padding:1.2rem 1.5rem 1.5rem;flex:1;}
        .related-card-body h4{font-size:1.1rem;margin-bottom:0.4rem;color:var(--primary);}
        .related-card-body p{font-size:0.9rem;color:var(--text-light);margin-bottom:0;}
        .related-card .badge{margin-bottom:0.6rem;}
        /* CTA */
        .cta-section{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%);padding:4rem 0;text-align:center;color:var(--white);}
        .cta-section h2{color:var(--white);font-size:2rem;margin-bottom:0.8rem;}
        .cta-section p{color:rgba(255,255,255,0.8);max-width:600px;margin:0 auto 1.8rem;font-size:1.05rem;}
        .cta-btns{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;}
        /* Footer */
        .site-footer{background:var(--primary-dark);color:rgba(255,255,255,0.7);padding:3.5rem 0 0;font-size:0.95rem;}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2.5rem;margin-bottom:2.5rem;}
        .footer-brand .site-logo{color:var(--white);font-size:1.4rem;margin-bottom:0.8rem;display:inline-block;}
        .footer-brand .site-logo span{color:var(--accent);}
        .footer-brand p{color:rgba(255,255,255,0.5);font-size:0.9rem;line-height:1.7;margin-bottom:1rem;}
        .footer-col h4{color:var(--white);font-size:1rem;margin-bottom:1rem;font-weight:700;}
        .footer-col a{display:block;color:rgba(255,255,255,0.5);padding:0.3rem 0;transition:var(--transition);text-decoration:none;font-size:0.9rem;}
        .footer-col a:hover{color:var(--accent);padding-left:4px;}
        .footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding:1.5rem 0;text-align:center;font-size:0.85rem;color:rgba(255,255,255,0.35);}
        .footer-bottom p{margin-bottom:0;color:rgba(255,255,255,0.35);}
        /* Not Found */
        .not-found-box{text-align:center;padding:4rem 2rem;background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);max-width:600px;margin:2rem auto;}
        .not-found-box i{font-size:3.5rem;color:var(--accent);margin-bottom:1.2rem;}
        .not-found-box h3{color:var(--primary);margin-bottom:0.8rem;}
        .not-found-box p{color:var(--text-light);margin-bottom:1.5rem;}
        /* Responsive */
        @media (max-width:1024px){
            .footer-grid{grid-template-columns:1fr 1fr;gap:2rem;}
            .related-grid{grid-template-columns:1fr 1fr;}
            .grid-4{grid-template-columns:repeat(2,1fr);}
        }
        @media (max-width:768px){
            .nav-toggle{display:block;}
            .nav-center{position:fixed;top:var(--nav-height);left:0;right:0;background:var(--white);flex-direction:column;padding:1.5rem;gap:0.5rem;box-shadow:0 10px 40px rgba(0,0,0,0.1);transform:translateY(-120%);opacity:0;pointer-events:none;transition:var(--transition);border-radius:0 0 var(--radius) var(--radius);z-index:999;}
            .nav-center.open{transform:translateY(0);opacity:1;pointer-events:auto;}
            .nav-links{flex-direction:column;width:100%;gap:0.3rem;}
            .nav-links a{width:100%;text-align:center;padding:0.7rem 1rem;}
            .logo-center{position:static;transform:none;}
            .header-inner{justify-content:space-between;}
            .site-logo{font-size:1.2rem;}
            .page-title{font-size:1.7rem;}
            .article-header h1{font-size:1.6rem;}
            .section{padding:2.5rem 0;}
            .grid-2,.grid-3,.related-grid{grid-template-columns:1fr;}
            .footer-grid{grid-template-columns:1fr;gap:1.5rem;}
            .cta-section h2{font-size:1.5rem;}
            .article-footer{flex-direction:column;align-items:flex-start;}
            .meta-row{font-size:0.8rem;gap:0.6rem;}
            .btn{padding:0.6rem 1.4rem;font-size:0.9rem;}
            h2{font-size:1.4rem;}
            .container{padding:0 1rem;}
        }
        @media (max-width:520px){
            .article-header h1{font-size:1.3rem;}
            .page-title{font-size:1.4rem;}
            .related-card-img{height:140px;}
            .cta-btns{flex-direction:column;align-items:center;}
            .cta-btns .btn{width:100%;max-width:280px;}
            .footer-grid{grid-template-columns:1fr;}
            .meta-row{flex-direction:column;gap:0.3rem;}
        }
        /* Foundation override */
        .grid-container{max-width:var(--container);padding-left:1.5rem;padding-right:1.5rem;}
        .button{transition:var(--transition);}
        .button.primary{background:var(--accent);color:var(--primary-dark);}
        .button.primary:hover{background:var(--accent-light);}

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #D4A843;
            --primary-dark: #B8912E;
            --primary-light: #E8C86A;
            --secondary: #1A1A2E;
            --secondary-light: #2D2D4E;
            --bg: #F8F6F2;
            --bg-alt: #EFECE6;
            --bg-card: #FFFFFF;
            --text: #2D2D2D;
            --text-weak: #888888;
            --text-light: #FFFFFF;
            --border: #E8E3DA;
            --border-light: #F0ECE4;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.10);
            --shadow-btn: 0 4px 14px rgba(212, 168, 67, 0.35);
            --transition: 0.30s ease;
            --font-base: 'Segoe UI', 'PingFang SC', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-h: 80px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-base);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 4px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            color: var(--secondary);
            font-weight: 700;
        }
        h1 {
            font-size: 2.6rem;
        }
        h2 {
            font-size: 2.0rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            margin-bottom: 1rem;
            color: var(--text);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Foundation Overrides ===== */
        .grid-container {
            max-width: var(--max-width);
            padding-left: 24px;
            padding-right: 24px;
        }
        .cell {
            padding: 0 12px;
        }
        .grid-x {
            margin-left: -12px;
            margin-right: -12px;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            height: var(--header-h);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
            height: 100%;
        }
        .header-left,
        .header-right {
            display: flex;
            align-items: center;
            gap: 2rem;
        }
        .header-left .nav-link,
        .header-right .nav-link {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text);
            padding: 0.4rem 0;
            position: relative;
            transition: color var(--transition);
        }
        .header-left .nav-link:hover,
        .header-right .nav-link:hover {
            color: var(--primary);
        }
        .header-left .nav-link::after,
        .header-right .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
            border-radius: 2px;
        }
        .header-left .nav-link:hover::after,
        .header-right .nav-link:hover::after,
        .header-left .nav-link.active::after,
        .header-right .nav-link.active::after {
            width: 100%;
        }
        .header-left .nav-link.active,
        .header-right .nav-link.active {
            color: var(--primary);
        }
        .site-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 4px;
            transition: opacity var(--transition);
            flex-shrink: 0;
        }
        .site-logo:hover {
            opacity: 0.85;
        }
        .site-logo span {
            color: var(--primary);
        }
        .nav-cta {
            background: var(--primary);
            color: var(--text-light) !important;
            padding: 0.55rem 1.6rem !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            box-shadow: var(--shadow-btn);
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 168, 67, 0.40);
        }
        .nav-cta::after {
            display: none !important;
        }
        .nav-cta i {
            font-size: 0.9rem;
        }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .hamburger:hover {
            background: var(--bg-alt);
        }
        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background: var(--secondary);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .hamburger.open span:nth-child(1) {
            transform: rotate(45deg) translate(6px, 6px);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: rotate(-45deg) translate(6px, -6px);
        }

        /* Mobile Nav */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            padding: 1.2rem 24px;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
            z-index: 999;
            flex-direction: column;
            gap: 0.8rem;
            transform: translateY(-12px);
            opacity: 0;
            pointer-events: none;
            transition: all 0.35s ease;
        }
        .mobile-nav.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-nav a {
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--text);
            padding: 0.6rem 0;
            border-bottom: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .mobile-nav a.active {
            color: var(--primary);
        }
        .mobile-nav a.nav-cta {
            justify-content: center;
            margin-top: 0.4rem;
        }

        /* ===== Hero ===== */
        .hero-section {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
            padding: 5rem 0 4rem;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(212, 168, 67, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(212, 168, 67, 0.10) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section .container {
            position: relative;
            z-index: 1;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212, 168, 67, 0.18);
            color: var(--primary-light);
            padding: 0.35rem 1.2rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1.2rem;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(212, 168, 67, 0.25);
        }
        .hero-section h1 {
            color: var(--text-light);
            font-size: 2.8rem;
            max-width: 720px;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .hero-section h1 span {
            color: var(--primary);
        }
        .hero-section .hero-desc {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.15rem;
            max-width: 580px;
            margin-bottom: 2rem;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--primary);
            color: var(--text-light);
            padding: 0.85rem 2.4rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            box-shadow: var(--shadow-btn);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: var(--text-light);
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(212, 168, 67, 0.45);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: var(--text-light);
            padding: 0.85rem 2.4rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            border: 2px solid rgba(255, 255, 255, 0.30);
            transition: background var(--transition), border-color var(--transition), transform var(--transition);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.55);
            color: var(--text-light);
            transform: translateY(-3px);
        }

        /* ===== Section Common ===== */
        .section {
            padding: 5rem 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-title {
            text-align: center;
            margin-bottom: 0.8rem;
            font-size: 2.2rem;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-weak);
            font-size: 1.1rem;
            max-width: 620px;
            margin: 0 auto 3rem auto;
        }
        .section-label {
            display: inline-block;
            background: rgba(212, 168, 67, 0.12);
            color: var(--primary-dark);
            padding: 0.25rem 1rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 0.6rem;
        }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 2rem;
            transition: box-shadow var(--transition), transform var(--transition);
            border: 1px solid var(--border-light);
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-icon {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-sm);
            background: rgba(212, 168, 67, 0.10);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 1.2rem;
        }
        .card h3 {
            font-size: 1.3rem;
            margin-bottom: 0.6rem;
        }
        .card p {
            color: var(--text-weak);
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        .card .card-tag {
            display: inline-block;
            background: rgba(212, 168, 67, 0.08);
            color: var(--primary-dark);
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-top: 0.8rem;
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 2rem;
            counter-reset: step;
        }
        .step-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 2rem 1.8rem;
            text-align: center;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
            position: relative;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: var(--text-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 4px 12px rgba(212, 168, 67, 0.35);
        }
        .step-item .step-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 1rem;
            margin-top: 0.4rem;
        }
        .step-item h4 {
            font-size: 1.15rem;
            margin-bottom: 0.5rem;
        }
        .step-item p {
            color: var(--text-weak);
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        /* ===== List / Checklist ===== */
        .checklist {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.2rem;
        }
        .checklist-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: var(--bg-card);
            padding: 1.2rem 1.5rem;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .checklist-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .checklist-item i {
            color: var(--primary);
            font-size: 1.2rem;
            margin-top: 2px;
            flex-shrink: 0;
        }
        .checklist-item .item-text {
            font-weight: 500;
            font-size: 0.98rem;
        }
        .checklist-item .item-desc {
            font-size: 0.85rem;
            color: var(--text-weak);
            margin-top: 2px;
        }

        /* ===== Alert / Tip ===== */
        .tip-block {
            background: linear-gradient(135deg, #FEF8ED, #FDF2E0);
            border-left: 5px solid var(--primary);
            padding: 2rem 2.2rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            box-shadow: var(--shadow);
            margin-top: 2rem;
        }
        .tip-block h4 {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--secondary);
            margin-bottom: 0.6rem;
        }
        .tip-block h4 i {
            color: var(--primary);
        }
        .tip-block p {
            color: var(--text);
            margin-bottom: 0;
        }
        .tip-block ul {
            list-style: disc;
            padding-left: 1.6rem;
            margin-top: 0.6rem;
            color: var(--text);
        }
        .tip-block ul li {
            margin-bottom: 0.3rem;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-question {
            padding: 1.2rem 1.5rem;
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--secondary);
            transition: background var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            background: var(--bg-alt);
        }
        .faq-question i {
            color: var(--primary);
            transition: transform var(--transition);
            font-size: 0.9rem;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-weak);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }
        .faq-answer p {
            margin-bottom: 0;
            color: var(--text-weak);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
            padding: 4.5rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(212, 168, 67, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            right: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(212, 168, 67, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            color: var(--text-light);
            font-size: 2.2rem;
            margin-bottom: 0.8rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.70);
            font-size: 1.1rem;
            max-width: 520px;
            margin: 0 auto 2rem auto;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.75);
            padding: 4rem 0 2rem;
            border-top: 3px solid var(--primary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand .site-logo {
            color: var(--text-light);
            font-size: 1.5rem;
            margin-bottom: 0.6rem;
            display: inline-block;
        }
        .footer-brand .site-logo span {
            color: var(--primary);
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            max-width: 300px;
            margin-bottom: 0;
        }
        .footer-col h4 {
            color: var(--text-light);
            font-size: 1rem;
            margin-bottom: 1rem;
            font-weight: 600;
            position: relative;
            padding-bottom: 0.5rem;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            padding: 0.3rem 0;
            transition: color var(--transition), padding-left var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary);
            padding-left: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.8rem;
            text-align: center;
        }
        .footer-bottom p {
            color: rgba(255, 255, 255, 0.40);
            font-size: 0.85rem;
            margin-bottom: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .hero-section h1 {
                font-size: 2.3rem;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-h: 70px;
            }
            .header-left,
            .header-right {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-nav {
                display: flex;
            }
            .header-inner {
                justify-content: space-between;
            }
            .site-logo {
                font-size: 1.3rem;
            }
            .hero-section {
                padding: 3.5rem 0 3rem;
            }
            .hero-section h1 {
                font-size: 1.9rem;
            }
            .hero-section .hero-desc {
                font-size: 1rem;
            }
            .section {
                padding: 3.5rem 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-subtitle {
                font-size: 1rem;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .checklist {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }
            .cta-section h2 {
                font-size: 1.7rem;
            }
            .btn-primary,
            .btn-outline-light {
                padding: 0.7rem 1.8rem;
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .hero-section h1 {
                font-size: 1.6rem;
            }
            .hero-actions {
                flex-direction: column;
                gap: 0.8rem;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline-light {
                justify-content: center;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .card {
                padding: 1.4rem;
            }
            .step-item {
                padding: 1.5rem 1.2rem;
            }
            .tip-block {
                padding: 1.4rem 1.2rem;
            }
            .faq-question {
                padding: 1rem 1.2rem;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 1.2rem 1rem;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .gap-1 {
            gap: 1rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .d-none {
            display: none;
        }
        @media (max-width: 768px) {
            .d-none-mobile {
                display: none !important;
            }
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e74c3c;
            --primary-dark: #c0392b;
            --primary-light: #fadbd8;
            --secondary: #f39c12;
            --secondary-light: #fdebd0;
            --accent: #2ecc71;
            --bg: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #1a1a2e;
            --bg-footer: #0f0f1a;
            --text: #2c3e50;
            --text-light: #7f8c8d;
            --text-white: #ffffff;
            --border: #e8e8e8;
            --border-light: #f0f0f0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-btn: 0 4px 14px rgba(231,76,60,0.35);
            --transition: all 0.3s ease;
            --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        h1 { font-size: 2.6rem; }
        h2 { font-size: 2rem; margin-bottom: 0.5rem; }
        h3 { font-size: 1.3rem; }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 1rem; color: var(--text-light); }
        input, button, textarea, select { font-family: inherit; font-size: inherit; outline: none; }
        button { cursor: pointer; border: none; background: none; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.5rem; }
        .section { padding: 5rem 0; }
        .section-title { text-align: center; margin-bottom: 3rem; }
        .section-title h2 { position: relative; display: inline-block; }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 0.8rem auto 0;
        }
        .section-title p { max-width: 640px; margin: 0.8rem auto 0; font-size: 1.05rem; }

        /* ===== Foundation Overrides ===== */
        .grid-container { max-width: var(--max-width); padding-left: 1.5rem; padding-right: 1.5rem; }
        .grid-x { margin-left: -0.75rem; margin-right: -0.75rem; }
        .cell { padding-left: 0.75rem; padding-right: 0.75rem; }

        /* ===== Header & Navigation ===== */
        .site-header {
            background: var(--bg-white);
            box-shadow: 0 2px 20px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-h);
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border-light);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .site-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 0.2rem;
            white-space: nowrap;
        }
        .site-logo span { color: var(--primary); }
        .site-logo:hover { color: var(--text); }
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 1.8rem;
        }
        .nav-wrap a {
            color: var(--text);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.3rem 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-wrap a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: var(--transition);
            border-radius: 2px;
        }
        .nav-wrap a:hover { color: var(--primary); }
        .nav-wrap a:hover::after { width: 100%; }
        .nav-wrap a.active { color: var(--primary); }
        .nav-wrap a.active::after { width: 100%; }
        .nav-wrap a.nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 0.5rem 1.4rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: var(--shadow-btn);
            transition: var(--transition);
        }
        .nav-wrap a.nav-cta::after { display: none; }
        .nav-wrap a.nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(231,76,60,0.4);
        }
        .nav-wrap a.nav-cta i { margin-right: 0.4rem; }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 4px;
        }
        .hamburger span {
            width: 26px;
            height: 3px;
            background: var(--text);
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
        .hamburger.open span:nth-child(2) { opacity: 0; }
        .hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }

        /* ===== Hero ===== */
        .hero-faq {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            color: var(--text-white);
            padding: 5rem 0 4rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero-faq::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 40%, rgba(231,76,60,0.15) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero-faq h1 {
            color: #fff;
            font-size: 2.8rem;
            margin-bottom: 0.8rem;
            position: relative;
        }
        .hero-faq p {
            color: rgba(255,255,255,0.7);
            font-size: 1.15rem;
            max-width: 620px;
            margin: 0 auto 1.5rem;
            position: relative;
        }
        .hero-faq .search-box {
            display: inline-flex;
            align-items: center;
            background: rgba(255,255,255,0.12);
            border-radius: 40px;
            padding: 0.3rem 0.3rem 0.3rem 1.5rem;
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255,255,255,0.15);
            max-width: 520px;
            width: 100%;
            position: relative;
        }
        .hero-faq .search-box input {
            background: transparent;
            border: none;
            color: #fff;
            padding: 0.7rem 0;
            flex: 1;
            font-size: 0.95rem;
        }
        .hero-faq .search-box input::placeholder { color: rgba(255,255,255,0.5); }
        .hero-faq .search-box button {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 0.6rem 1.6rem;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .hero-faq .search-box button:hover { background: var(--primary-dark); }

        /* ===== FAQ Categories ===== */
        .faq-categories { background: var(--bg-white); border-bottom: 1px solid var(--border-light); }
        .faq-categories .grid-x { gap: 0.5rem 0; }
        .cat-item {
            text-align: center;
            padding: 1.8rem 1rem;
            border-radius: var(--radius);
            transition: var(--transition);
            cursor: default;
            border: 1px solid transparent;
        }
        .cat-item:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .cat-item .cat-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 0.6rem;
        }
        .cat-item h4 { font-size: 1rem; margin-bottom: 0.3rem; }
        .cat-item p { font-size: 0.85rem; color: var(--text-light); margin: 0; }

        /* ===== FAQ Accordion ===== */
        .faq-section { background: var(--bg-white); }
        .faq-list { max-width: 820px; margin: 0 auto; }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 0.8rem;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary); box-shadow: var(--shadow); }
        .faq-question {
            padding: 1.2rem 1.5rem;
            font-weight: 600;
            font-size: 1.05rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            background: var(--bg);
            transition: var(--transition);
            user-select: none;
        }
        .faq-question:hover { background: var(--primary-light); }
        .faq-question i { color: var(--primary); transition: var(--transition); font-size: 0.9rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 1.5rem;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            background: #fff;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 1.2rem 1.5rem 1.5rem;
        }
        .faq-answer p { margin: 0; color: var(--text-light); font-size: 0.95rem; }

        /* ===== Quick Steps ===== */
        .steps-section {
            background: var(--bg);
        }
        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 2rem 1.8rem;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            height: 100%;
        }
        .step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        .step-card h4 { margin-bottom: 0.5rem; }
        .step-card p { font-size: 0.9rem; margin: 0; }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 4rem 0;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 { color: #fff; margin-bottom: 0.5rem; }
        .cta-section p { color: rgba(255,255,255,0.8); max-width: 600px; margin: 0 auto 1.8rem; }
        .cta-section .btn-group { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
        .cta-btn-primary {
            background: #fff;
            color: var(--primary) !important;
            padding: 0.8rem 2.4rem;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .cta-btn-primary:hover { background: var(--secondary); color: var(--text) !important; transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,0,0,0.2); }
        .cta-btn-outline {
            border: 2px solid rgba(255,255,255,0.5);
            color: #fff !important;
            padding: 0.8rem 2.4rem;
            border-radius: 40px;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .cta-btn-outline:hover { background: rgba(255,255,255,0.15); border-color: #fff; transform: translateY(-2px); }

        /* ===== Footer (shared) ===== */
        .site-footer {
            background: var(--bg-footer);
            color: rgba(255,255,255,0.7);
            padding: 3.5rem 0 1.5rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand .site-logo { color: #fff; font-size: 1.3rem; margin-bottom: 0.8rem; display: inline-block; }
        .footer-brand .site-logo span { color: var(--primary); }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.5); margin-top: 0.6rem; line-height: 1.6; }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 1rem; font-weight: 600; }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.5);
            font-size: 0.9rem;
            margin-bottom: 0.6rem;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--primary); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.35);
        }
        .footer-bottom p { margin: 0; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: flex; }
            .nav-wrap {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 1.5rem 2rem;
                box-shadow: 0 20px 40px rgba(0,0,0,0.1);
                gap: 1rem;
                display: none;
                border-top: 1px solid var(--border-light);
                z-index: 999;
            }
            .nav-wrap.open { display: flex; }
            .nav-wrap a { font-size: 1rem; padding: 0.5rem 0; }
            .nav-wrap a.nav-cta { align-self: flex-start; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .hero-faq h1 { font-size: 2rem; }
            .hero-faq p { font-size: 1rem; }
            .hero-faq { padding: 3.5rem 0 2.5rem; }
            .section { padding: 3rem 0; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.8rem; }
            .faq-question { font-size: 0.95rem; padding: 1rem 1.2rem; }
            .faq-answer { font-size: 0.9rem; }
            .step-card { padding: 1.5rem; }
            .cta-section { padding: 2.5rem 0; }
            .search-box { flex-wrap: wrap; padding: 0.3rem !important; }
            .search-box input { width: 100%; padding: 0.5rem 1rem !important; }
            .search-box button { width: 100%; margin-top: 0.3rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 1rem; }
            .header-inner { padding: 0 1rem; }
            .hero-faq h1 { font-size: 1.6rem; }
            .cat-item { padding: 1.2rem 0.8rem; }
            .cat-item .cat-icon { font-size: 1.5rem; }
            .btn-group .cta-btn-primary,
            .btn-group .cta-btn-outline { width: 100%; justify-content: center; }
            .footer-grid { gap: 1.2rem; }
        }

        /* ===== Additional Utilities ===== */
        .text-primary { color: var(--primary); }
        .bg-light { background: var(--bg); }
        .mb-0 { margin-bottom: 0; }
        .mt-1 { margin-top: 0.5rem; }
        .mt-2 { margin-top: 1rem; }
        .gap-1 { gap: 0.5rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .rounded-full { border-radius: 9999px; }

        /* FAQ Category Tabs (simple) */
        .faq-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            justify-content: center;
            margin-bottom: 2.5rem;
        }
        .faq-tab {
            padding: 0.5rem 1.5rem;
            border-radius: 30px;
            border: 1px solid var(--border);
            background: var(--bg-white);
            font-weight: 500;
            font-size: 0.9rem;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-tab:hover { border-color: var(--primary); color: var(--primary); }
        .faq-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }