/* roulang page: index */
/* ===== Design Variables ===== */
:root {
  --primary: #1a2a6c;
  --primary-light: #2d4a8e;
  --primary-dark: #0f1a4a;
  --secondary: #e8a838;
  --secondary-light: #f0c060;
  --secondary-dark: #c88a20;
  --bg: #ffffff;
  --bg-alt: #f5f7fb;
  --bg-dark: #0f1a4a;
  --text: #1a1a2e;
  --text-light: #6c757d;
  --text-white: #ffffff;
  --border: #e9ecef;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.12);
  --shadow-hover: 0 8px 32px rgba(0,0,0,0.15);
  --transition: all 0.3s ease;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --container-width: 1200px;
  --header-height: 72px;
}
/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-family);font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--primary-light)}
img{max-width:100%;height:auto;display:block}
button,input,textarea,select{font-family:inherit;font-size:inherit;outline:none;transition:var(--transition)}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:700;color:var(--text)}
h1{font-size:2.8rem;font-weight:800}
h2{font-size:2.2rem;font-weight:700;letter-spacing:-0.02em}
h3{font-size:1.4rem;font-weight:600}
h4{font-size:1.1rem;font-weight:600}
p{margin-bottom:1rem;color:var(--text-light)}
/* ===== Container ===== */
.container{width:100%;max-width:var(--container-width);margin:0 auto;padding:0 24px}
/* ===== Header / Nav ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--header-height);background:rgba(255,255,255,0.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);transition:var(--transition)}
.header.scrolled{box-shadow:var(--shadow)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:100%;max-width:var(--container-width);margin:0 auto;padding:0 24px}
.logo{font-size:1.35rem;font-weight:800;color:var(--primary);letter-spacing:-0.5px;display:flex;align-items:center;gap:8px;white-space:nowrap}
.logo i{color:var(--secondary);font-size:1.5rem}
.logo:hover{color:var(--primary-dark)}
.nav-center{display:flex;align-items:center;gap:8px}
.nav-center a{padding:8px 18px;border-radius:var(--radius-sm);font-size:0.95rem;font-weight:500;color:var(--text);transition:var(--transition);position:relative}
.nav-center a:hover{background:var(--bg-alt);color:var(--primary)}
.nav-center a.active{color:var(--primary);background:rgba(26,42,108,0.08);font-weight:600}
.nav-right{display:flex;align-items:center;gap:12px}
.search-toggle{width:40px;height:40px;border-radius:50%;border:none;background:var(--bg-alt);color:var(--text-light);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1rem;transition:var(--transition)}
.search-toggle:hover{background:var(--border);color:var(--primary)}
.cta-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 24px;border-radius:var(--radius-sm);font-weight:600;font-size:0.95rem;border:none;cursor:pointer;transition:var(--transition);background:var(--primary);color:var(--text-white)}
.cta-btn:hover{background:var(--primary-light);transform:translateY(-2px);box-shadow:var(--shadow)}
.cta-btn.secondary{background:var(--secondary);color:var(--primary-dark)}
.cta-btn.secondary:hover{background:var(--secondary-light)}
.cta-btn.outline{background:transparent;border:2px solid var(--primary);color:var(--primary)}
.cta-btn.outline:hover{background:var(--primary);color:var(--text-white)}
.mobile-toggle{display:none;width:40px;height:40px;border:none;background:transparent;cursor:pointer;font-size:1.5rem;color:var(--text);align-items:center;justify-content:center}
/* ===== Search Overlay ===== */
.search-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.6);backdrop-filter:blur(8px);z-index:2000;display:none;align-items:center;justify-content:center;padding:24px}
.search-overlay.active{display:flex}
.search-modal{background:var(--bg);border-radius:var(--radius-lg);padding:32px;width:100%;max-width:560px;box-shadow:var(--shadow-lg);position:relative}
.search-modal input{width:100%;padding:16px 20px;border:2px solid var(--border);border-radius:var(--radius);font-size:1.1rem;background:var(--bg-alt);color:var(--text)}
.search-modal input:focus{border-color:var(--primary);background:var(--bg)}
.search-modal .close-search{position:absolute;top:16px;right:20px;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-light)}
/* ===== Hero ===== */
.hero{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;padding-top:var(--header-height);background:var(--primary-dark);background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;background-blend-mode:overlay;background-color:rgba(15,26,74,0.75)}
.hero-content{position:relative;z-index:2;max-width:720px;padding:80px 0;color:var(--text-white)}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;background:rgba(232,168,56,0.2);border:1px solid rgba(232,168,56,0.4);border-radius:50px;font-size:0.85rem;font-weight:500;color:var(--secondary-light);margin-bottom:24px;backdrop-filter:blur(4px)}
.hero h1{font-size:3.2rem;font-weight:800;line-height:1.2;color:var(--text-white);margin-bottom:20px;letter-spacing:-0.03em}
.hero p{font-size:1.2rem;color:rgba(255,255,255,0.8);max-width:600px;margin-bottom:32px;line-height:1.8}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-actions .cta-btn{padding:14px 32px;font-size:1.05rem;border-radius:var(--radius)}
.hero-actions .cta-btn.outline{border-color:rgba(255,255,255,0.5);color:var(--text-white)}
.hero-actions .cta-btn.outline:hover{background:rgba(255,255,255,0.15);border-color:var(--text-white)}
.hero-stats{display:flex;gap:40px;margin-top:48px;padding-top:32px;border-top:1px solid rgba(255,255,255,0.15)}
.hero-stat{text-align:left}
.hero-stat .num{font-size:2rem;font-weight:800;color:var(--secondary);display:block}
.hero-stat .label{font-size:0.9rem;color:rgba(255,255,255,0.7);margin-top:4px}
/* ===== Sections ===== */
.section{padding:80px 0}
.section-alt{background:var(--bg-alt)}
.section-dark{background:var(--bg-dark);color:var(--text-white)}
.section-title{text-align:center;margin-bottom:48px}
.section-title h2{margin-bottom:12px}
.section-title p{max-width:600px;margin:0 auto;color:var(--text-light)}
.section-dark .section-title h2{color:var(--text-white)}
.section-dark .section-title p{color:rgba(255,255,255,0.7)}
/* ===== Features ===== */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--bg);padding:32px;border-radius:var(--radius);box-shadow:var(--shadow);transition:var(--transition);border:1px solid var(--border);text-align:center}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.feature-card .icon{width:64px;height:64px;border-radius:50%;background:rgba(26,42,108,0.08);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:1.6rem;color:var(--primary);transition:var(--transition)}
.feature-card:hover .icon{background:var(--primary);color:var(--text-white)}
.feature-card h3{margin-bottom:12px;font-size:1.2rem}
.feature-card p{font-size:0.95rem;margin-bottom:0}
/* ===== Category Card ===== */
.category-section{background:var(--bg-alt)}
.category-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.category-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;background:var(--bg);box-shadow:var(--shadow);transition:var(--transition);border:1px solid var(--border);display:flex;flex-direction:column}
.category-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.category-card .card-img{height:200px;overflow:hidden;position:relative}
.category-card .card-img img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}
.category-card:hover .card-img img{transform:scale(1.05)}
.category-card .card-body{padding:24px;flex:1;display:flex;flex-direction:column}
.category-card .card-body h3{font-size:1.2rem;margin-bottom:8px}
.category-card .card-body p{font-size:0.95rem;margin-bottom:16px;flex:1}
.category-card .card-tag{display:inline-flex;align-items:center;gap:6px;padding:4px 14px;background:rgba(232,168,56,0.12);color:var(--secondary-dark);border-radius:50px;font-size:0.8rem;font-weight:500;margin-bottom:12px;width:fit-content}
/* ===== Latest Posts ===== */
.posts-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.post-card{background:var(--bg);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border);transition:var(--transition);display:flex;flex-direction:column}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.post-card .post-img{height:180px;overflow:hidden;position:relative}
.post-card .post-img img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}
.post-card:hover .post-img img{transform:scale(1.05)}
.post-card .post-body{padding:20px;flex:1;display:flex;flex-direction:column}
.post-card .post-meta{display:flex;align-items:center;gap:12px;font-size:0.82rem;color:var(--text-light);margin-bottom:10px;flex-wrap:wrap}
.post-card .post-meta .category{background:rgba(26,42,108,0.08);color:var(--primary);padding:2px 12px;border-radius:50px;font-weight:500}
.post-card .post-meta .date{display:flex;align-items:center;gap:4px}
.post-card .post-body h3{font-size:1.05rem;margin-bottom:8px;line-height:1.4}
.post-card .post-body h3 a{color:var(--text);transition:var(--transition)}
.post-card .post-body h3 a:hover{color:var(--primary)}
.post-card .post-body p{font-size:0.9rem;margin-bottom:0;flex:1;color:var(--text-light)}
.post-card .post-body .read-more{margin-top:14px;font-size:0.85rem;font-weight:500;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.empty-msg{text-align:center;padding:48px;color:var(--text-light);font-size:1.1rem;grid-column:1/-1}
/* ===== Steps / Process ===== */
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step-card{text-align:center;padding:32px 20px;position:relative}
.step-card::before{counter-increment:step;content:counter(step);position:absolute;top:-8px;left:50%;transform:translateX(-50%);width:40px;height:40px;border-radius:50%;background:var(--secondary);color:var(--primary-dark);font-size:1.1rem;font-weight:800;display:flex;align-items:center;justify-content:center}
.step-card .step-icon{margin-bottom:16px;font-size:2rem;color:var(--primary);margin-top:24px}
.step-card h3{font-size:1.1rem;margin-bottom:8px}
.step-card p{font-size:0.9rem;margin-bottom:0}
/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;transition:var(--transition);background:var(--bg)}
.faq-item.active{border-color:var(--primary);box-shadow:0 0 0 2px rgba(26,42,108,0.1)}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;cursor:pointer;font-weight:600;font-size:1rem;color:var(--text);background:transparent;border:none;width:100%;text-align:left;transition:var(--transition)}
.faq-question:hover{background:var(--bg-alt)}
.faq-question i{transition:var(--transition);color:var(--text-light);font-size:0.9rem}
.faq-item.active .faq-question i{transform:rotate(180deg);color:var(--primary)}
.faq-answer{padding:0 24px 18px;color:var(--text-light);font-size:0.95rem;line-height:1.8;display:none}
.faq-item.active .faq-answer{display:block}
/* ===== CTA ===== */
.cta-section{background:var(--primary-dark);background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;background-blend-mode:overlay;background-color:rgba(15,26,74,0.8);padding:80px 0;text-align:center}
.cta-section h2{color:var(--text-white);font-size:2.4rem;margin-bottom:16px}
.cta-section p{color:rgba(255,255,255,0.8);max-width:600px;margin:0 auto 32px;font-size:1.1rem}
.cta-section .cta-btn{padding:14px 40px;font-size:1.05rem}
/* ===== Footer ===== */
.footer{background:var(--bg-dark);color:rgba(255,255,255,0.7);padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand .logo{color:var(--text-white);margin-bottom:12px}
.footer-brand p{font-size:0.9rem;color:rgba(255,255,255,0.6);max-width:320px}
.footer h4{color:var(--text-white);font-size:1rem;margin-bottom:16px;font-weight:600}
.footer ul li{margin-bottom:10px}
.footer ul li a{color:rgba(255,255,255,0.6);font-size:0.9rem;transition:var(--transition)}
.footer ul li a:hover{color:var(--secondary)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:0.85rem;color:rgba(255,255,255,0.5)}
.footer-bottom a{color:rgba(255,255,255,0.5)}
.footer-bottom a:hover{color:var(--secondary)}
/* ===== Responsive ===== */
@media(max-width:1024px){
  .hero h1{font-size:2.6rem}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .steps-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav-center{display:none}
  .nav-right .search-toggle{display:none}
  .mobile-toggle{display:flex}
  .header-inner{padding:0 16px}
  .nav-center.mobile-open{display:flex;flex-direction:column;position:absolute;top:var(--header-height);left:0;right:0;background:var(--bg);border-bottom:1px solid var(--border);padding:16px;box-shadow:var(--shadow);gap:4px}
  .nav-center.mobile-open a{padding:12px 16px;border-radius:var(--radius-sm);width:100%}
  .hero{min-height:auto;padding:100px 0 60px}
  .hero h1{font-size:2rem}
  .hero p{font-size:1rem}
  .hero-stats{gap:24px;flex-wrap:wrap}
  .hero-stat .num{font-size:1.5rem}
  .features-grid{grid-template-columns:1fr}
  .category-grid{grid-template-columns:1fr}
  .posts-grid{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr}
  .section{padding:48px 0}
  .section-title{margin-bottom:32px}
  h2{font-size:1.6rem}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;text-align:center}
  .hero-actions .cta-btn{padding:12px 24px;font-size:0.95rem}
}
@media(max-width:520px){
  .hero h1{font-size:1.6rem}
  .logo{font-size:1.1rem}
  .hero-stat .num{font-size:1.2rem}
  .feature-card{padding:24px}
  .post-card .post-img{height:140px}
}

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a6b;
            --primary-light: #2a5298;
            --primary-dark: #0f2444;
            --secondary: #c9a84c;
            --secondary-light: #e0c87a;
            --secondary-dark: #a8882e;
            --accent: #e85d3a;
            --accent-light: #f07a5a;
            --bg-body: #f8f9fc;
            --bg-white: #ffffff;
            --bg-light: #eef1f7;
            --bg-dark: #0f1a2e;
            --bg-card: #ffffff;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-light: #8a9aaa;
            --text-white: #ffffff;
            --text-muted: #aab5c5;
            --border: #e2e8f0;
            --border-light: #f0f2f5;
            --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 8px 30px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.08);
            --shadow-xl: 0 30px 80px rgba(0, 0, 0, 0.12);
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
        button { cursor: pointer; background: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text-primary); font-weight: 600; }
        h1 { font-size: 2.5rem; letter-spacing: -0.02em; }
        h2 { font-size: 2rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { color: var(--text-secondary); margin-bottom: 1rem; }
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
        .section { padding: 80px 0; }
        .section-title { text-align: center; margin-bottom: 48px; }
        .section-title h2 { margin-bottom: 12px; }
        .section-title p { max-width: 640px; margin: 0 auto; color: var(--text-light); font-size: 1.05rem; }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 8px; }
        .mb-2 { margin-bottom: 16px; }
        .mb-3 { margin-bottom: 24px; }
        .mb-4 { margin-bottom: 32px; }
        .mb-5 { margin-bottom: 48px; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 28px; border-radius: 50px;
            font-weight: 500; font-size: 0.95rem;
            transition: var(--transition); border: 2px solid transparent;
            justify-content: center;
        }
        .btn-primary {
            background: var(--secondary); color: var(--primary-dark); border-color: var(--secondary);
        }
        .btn-primary:hover {
            background: var(--secondary-light); border-color: var(--secondary-light); color: var(--primary-dark);
            transform: translateY(-2px); box-shadow: 0 8px 24px rgba(201, 168, 76, 0.35);
        }
        .btn-outline {
            background: transparent; color: var(--text-white); border-color: rgba(255,255,255,0.4);
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.12); border-color: var(--text-white); color: var(--text-white);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent); color: #fff; border-color: var(--accent);
        }
        .btn-accent:hover {
            background: var(--accent-light); border-color: var(--accent-light); color: #fff;
            transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232, 93, 58, 0.35);
        }
        .btn-sm { padding: 8px 20px; font-size: 0.85rem; }
        .btn-lg { padding: 16px 36px; font-size: 1.05rem; }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 50px;
            font-size: 0.78rem; font-weight: 500; background: var(--bg-light); color: var(--text-secondary);
        }
        .badge-primary { background: rgba(26, 58, 107, 0.1); color: var(--primary); }
        .badge-secondary { background: rgba(201, 168, 76, 0.15); color: var(--secondary-dark); }
        .badge-accent { background: rgba(232, 93, 58, 0.1); color: var(--accent); }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(255,255,255,0.92); backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border); height: var(--header-height);
            transition: var(--transition);
        }
        .header.scrolled { background: rgba(255,255,255,0.98); box-shadow: var(--shadow-sm); }
        .header .container {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%; gap: 16px;
        }
        .logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.3rem; font-weight: 700; color: var(--primary); white-space: nowrap;
        }
        .logo i { color: var(--secondary); font-size: 1.4rem; }
        .logo:hover { color: var(--primary); }
        .nav-center { display: flex; align-items: center; gap: 32px; }
        .nav-center a {
            font-size: 0.92rem; font-weight: 500; color: var(--text-secondary);
            padding: 6px 0; position: relative; transition: var(--transition);
        }
        .nav-center a::after {
            content: ''; position: absolute; bottom: -2px; left: 0; right: 0;
            height: 2px; background: var(--secondary); transform: scaleX(0);
            transition: var(--transition); border-radius: 2px;
        }
        .nav-center a:hover { color: var(--primary); }
        .nav-center a:hover::after { transform: scaleX(1); }
        .nav-center a.active { color: var(--primary); font-weight: 600; }
        .nav-center a.active::after { transform: scaleX(1); }
        .nav-right { display: flex; align-items: center; gap: 12px; }
        .search-box {
            display: flex; align-items: center; gap: 6px;
            background: var(--bg-light); border-radius: 50px; padding: 6px 16px;
            border: 1px solid var(--border); transition: var(--transition);
            min-width: 180px;
        }
        .search-box:focus-within { border-color: var(--secondary); background: var(--bg-white); box-shadow: 0 0 0 3px rgba(201,168,76,0.15); }
        .search-box i { color: var(--text-light); font-size: 0.9rem; }
        .search-box input { background: transparent; border: none; padding: 6px 0; width: 100%; color: var(--text-primary); }
        .search-box input::placeholder { color: var(--text-light); }
        .nav-cta .btn { padding: 8px 22px; font-size: 0.85rem; }
        .menu-toggle { display: none; font-size: 1.4rem; color: var(--text-primary); padding: 4px; }

        /* ===== Mobile Nav ===== */
        .mobile-nav {
            display: none; position: fixed; top: var(--header-height); left: 0; right: 0;
            background: var(--bg-white); border-bottom: 1px solid var(--border);
            padding: 16px 24px; box-shadow: var(--shadow-md); z-index: 999;
            flex-direction: column; gap: 12px;
        }
        .mobile-nav.open { display: flex; }
        .mobile-nav a {
            font-size: 1rem; font-weight: 500; color: var(--text-secondary); padding: 8px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .mobile-nav a:last-child { border-bottom: none; }
        .mobile-nav a.active { color: var(--primary); font-weight: 600; }

        /* ===== Hero / Banner ===== */
        .page-banner {
            position: relative; padding: 140px 0 80px; margin-top: var(--header-height);
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            overflow: hidden; min-height: 320px;
            display: flex; align-items: center;
        }
        .page-banner::before {
            content: ''; position: absolute; inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover; background-position: center; opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: ''; position: absolute; bottom: 0; left: 0; right: 0;
            height: 120px; background: linear-gradient(to top, var(--bg-body), transparent);
        }
        .page-banner .container { position: relative; z-index: 2; text-align: center; }
        .page-banner h1 { color: var(--text-white); font-size: 2.8rem; font-weight: 700; margin-bottom: 16px; }
        .page-banner p { color: rgba(255,255,255,0.8); font-size: 1.15rem; max-width: 640px; margin: 0 auto 24px; }
        .page-banner .breadcrumb { display: flex; justify-content: center; gap: 8px; font-size: 0.9rem; color: rgba(255,255,255,0.6); }
        .page-banner .breadcrumb a { color: rgba(255,255,255,0.7); }
        .page-banner .breadcrumb a:hover { color: var(--secondary-light); }
        .page-banner .breadcrumb span { color: var(--secondary-light); }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-card); border-radius: var(--radius-md);
            border: 1px solid var(--border); overflow: hidden;
            transition: var(--transition);
        }
        .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .card-img { width: 100%; height: 200px; object-fit: cover; border-radius: 0; }
        .card-body { padding: 24px; }
        .card-body h3 { margin-bottom: 8px; font-size: 1.15rem; }
        .card-body p { font-size: 0.92rem; color: var(--text-light); margin-bottom: 16px; }
        .card-meta { display: flex; align-items: center; gap: 16px; font-size: 0.82rem; color: var(--text-muted); }
        .card-meta i { margin-right: 4px; }
        .card-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }

        /* ===== Grid ===== */
        .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
        .grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 24px; }

        /* ===== Guide List ===== */
        .guide-list { display: flex; flex-direction: column; gap: 16px; }
        .guide-item {
            display: flex; align-items: flex-start; gap: 20px;
            background: var(--bg-card); border-radius: var(--radius-md);
            padding: 24px 28px; border: 1px solid var(--border);
            transition: var(--transition);
        }
        .guide-item:hover { transform: translateX(4px); box-shadow: var(--shadow-md); border-color: transparent; }
        .guide-icon {
            flex-shrink: 0; width: 52px; height: 52px; border-radius: var(--radius-sm);
            background: var(--bg-light); display: flex; align-items: center; justify-content: center;
            font-size: 1.4rem; color: var(--primary);
        }
        .guide-icon.secondary { background: rgba(201,168,76,0.12); color: var(--secondary-dark); }
        .guide-icon.accent { background: rgba(232,93,58,0.1); color: var(--accent); }
        .guide-content h4 { font-size: 1.05rem; margin-bottom: 4px; }
        .guide-content p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 0; }
        .guide-step { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
        .guide-step .step-num {
            width: 32px; height: 32px; border-radius: 50%;
            background: var(--primary); color: #fff; display: flex;
            align-items: center; justify-content: center;
            font-size: 0.85rem; font-weight: 600;
        }

        /* ===== 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-md);
            border: 1px solid var(--border); overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: transparent; box-shadow: var(--shadow-sm); }
        .faq-question {
            display: flex; align-items: center; justify-content: space-between;
            padding: 18px 24px; font-weight: 500; font-size: 1rem;
            cursor: pointer; color: var(--text-primary); gap: 12px;
        }
        .faq-question i { color: var(--text-light); transition: var(--transition); font-size: 0.9rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--secondary); }
        .faq-answer { padding: 0 24px 18px; font-size: 0.92rem; color: var(--text-secondary); line-height: 1.7; display: none; }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 80px 0; text-align: center; position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover; background-position: center; opacity: 0.1;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { color: var(--text-white); font-size: 2.2rem; margin-bottom: 12px; }
        .cta-section p { color: rgba(255,255,255,0.8); font-size: 1.1rem; max-width: 560px; margin: 0 auto 28px; }
        .cta-section .btn { margin: 0 6px; }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7);
            padding: 56px 0 32px; border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 36px; }
        .footer-brand .logo { color: var(--text-white); font-size: 1.25rem; margin-bottom: 12px; }
        .footer-brand .logo i { color: var(--secondary); }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.55); line-height: 1.7; max-width: 320px; }
        .footer h4 { color: var(--text-white); font-size: 0.95rem; font-weight: 600; margin-bottom: 16px; letter-spacing: 0.3px; }
        .footer ul { display: flex; flex-direction: column; gap: 10px; }
        .footer ul a { color: rgba(255,255,255,0.55); font-size: 0.88rem; transition: var(--transition); }
        .footer ul a:hover { color: var(--secondary-light); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px; display: flex; justify-content: space-between;
            flex-wrap: wrap; gap: 12px; font-size: 0.82rem; color: rgba(255,255,255,0.4);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .page-banner h1 { font-size: 2.2rem; }
            .nav-center { gap: 20px; }
            .search-box { min-width: 140px; }
        }
        @media (max-width: 768px) {
            .nav-center { display: none; }
            .search-box { display: none; }
            .nav-cta { display: none; }
            .menu-toggle { display: block; }
            .header .container { padding: 0 16px; }
            .page-banner { padding: 120px 0 60px; min-height: 260px; }
            .page-banner h1 { font-size: 1.8rem; }
            .page-banner p { font-size: 1rem; }
            .section { padding: 56px 0; }
            .section-title { margin-bottom: 32px; }
            .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 20px; }
            .guide-item { flex-direction: column; padding: 20px; }
            .guide-step { align-self: flex-start; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-section h2 { font-size: 1.6rem; }
            .cta-section .btn { display: block; width: 100%; margin: 8px 0; }
            h2 { font-size: 1.6rem; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; text-align: center; }
            .footer-brand p { max-width: 100%; }
            .page-banner h1 { font-size: 1.5rem; }
            .container { padding: 0 16px; }
            .card-body { padding: 18px; }
            .faq-question { padding: 14px 18px; font-size: 0.92rem; }
            .faq-answer { padding: 0 18px 14px; }
        }

        /* ===== Additional Utilities ===== */
        .mt-1 { margin-top: 8px; }
        .mt-2 { margin-top: 16px; }
        .mt-3 { margin-top: 24px; }
        .mt-4 { margin-top: 32px; }
        .gap-2 { gap: 8px; }
        .gap-3 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }
        .inline-flex { display: inline-flex; align-items: center; gap: 6px; }
        .w-full { width: 100%; }

        /* Feature highlight blocks */
        .feature-highlight {
            display: flex; align-items: center; gap: 48px;
            background: var(--bg-card); border-radius: var(--radius-lg);
            padding: 40px 48px; border: 1px solid var(--border);
        }
        .feature-highlight.reverse { flex-direction: row-reverse; }
        .feature-img { flex: 1; border-radius: var(--radius-md); overflow: hidden; }
        .feature-img img { width: 100%; height: 320px; object-fit: cover; border-radius: var(--radius-md); }
        .feature-text { flex: 1; }
        .feature-text h3 { font-size: 1.6rem; margin-bottom: 16px; }
        .feature-text p { font-size: 1rem; color: var(--text-light); }

        @media (max-width: 768px) {
            .feature-highlight { flex-direction: column !important; padding: 24px; gap: 24px; }
            .feature-img img { height: 220px; }
            .feature-text h3 { font-size: 1.3rem; }
        }

        /* ===== Skeleton / Loading (just in case) ===== */
        .skeleton { background: linear-gradient(90deg, var(--bg-light) 25%, #e8ecf2 50%, var(--bg-light) 75%); background-size: 200% 100%; animation: shimmer 1.5s infinite; border-radius: var(--radius-sm); }
        @keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

        /* Extra spacing for banner */
        .banner-icon { font-size: 3rem; color: var(--secondary); margin-bottom: 16px; }

/* roulang page: article */
:root {
  --primary: #c9a84c;
  --primary-dark: #a88a2e;
  --primary-light: #e8d49e;
  --secondary: #1a1a2e;
  --secondary-light: #2a2a4e;
  --bg: #ffffff;
  --bg-alt: #f8f7f4;
  --bg-dark: #0f0f1a;
  --text: #1a1a2e;
  --text-light: #6b7280;
  --text-white: #f9f9f9;
  --border: #e5e7eb;
  --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-glow: 0 0 30px rgba(201,168,76,0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --container: 1200px;
  --nav-height: 72px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-sans); font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
a:focus-visible { outline: 2px solid var(--primary); outline-offset: 4px; border-radius: 4px; }
button { cursor: pointer; font-family: inherit; border: none; background: none; transition: var(--transition); }
button:focus-visible { outline: 2px solid var(--primary); outline-offset: 4px; }
input, textarea { font-family: inherit; font-size: inherit; }
ul { list-style: none; }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) { .container { padding: 0 16px; } }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.section-title { font-size: 2rem; font-weight: 700; line-height: 1.3; margin-bottom: 0.5rem; color: var(--text); }
.section-sub { font-size: 1.05rem; color: var(--text-light); max-width: 640px; line-height: 1.6; }
.section-header { text-align: center; margin-bottom: 3rem; }
.section-header .section-sub { margin: 0 auto; }
@media (max-width: 768px) { .section-title { font-size: 1.6rem; } .section-sub { font-size: 0.95rem; } }
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 32px; font-size: 1rem; font-weight: 600; border-radius: 50px; transition: var(--transition); border: 2px solid transparent; text-align: center; justify-content: center; }
.btn-primary { background: var(--primary); color: var(--bg); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: var(--bg); transform: translateY(-2px); box-shadow: var(--shadow-glow); }
.btn-secondary { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-secondary:hover { background: var(--primary); color: var(--bg); transform: translateY(-2px); }
.btn-outline-light { background: transparent; color: var(--text-white); border-color: rgba(255,255,255,0.4); }
.btn-outline-light:hover { background: rgba(255,255,255,0.12); border-color: var(--text-white); transform: translateY(-2px); }
.btn-sm { padding: 10px 22px; font-size: 0.9rem; gap: 6px; }
.btn i { font-size: 0.9em; }
.badge { display: inline-block; padding: 4px 16px; border-radius: 50px; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.3px; background: var(--primary-light); color: var(--primary-dark); }
.badge-sm { padding: 2px 12px; font-size: 0.7rem; }
.tag { display: inline-block; padding: 6px 18px; border-radius: 50px; font-size: 0.85rem; font-weight: 500; background: var(--bg-alt); color: var(--text-light); border: 1px solid var(--border); transition: var(--transition); }
.tag:hover { background: var(--primary-light); color: var(--primary-dark); border-color: var(--primary); }

/* ===== Header / Nav ===== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,0.92); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid rgba(229,231,235,0.5); height: var(--nav-height); transition: var(--transition); }
.header.scrolled { box-shadow: 0 4px 30px rgba(0,0,0,0.06); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 1.5rem; font-weight: 800; color: var(--secondary); letter-spacing: -0.5px; }
.logo i { color: var(--primary); font-size: 1.3em; }
.logo span { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-center { display: flex; align-items: center; gap: 8px; }
.nav-center a { padding: 8px 20px; border-radius: 50px; font-size: 0.95rem; font-weight: 500; color: var(--text-light); transition: var(--transition); position: relative; }
.nav-center a:hover { color: var(--text); background: var(--bg-alt); }
.nav-center a.active { color: var(--primary); background: var(--primary-light); font-weight: 600; }
.nav-right { display: flex; align-items: center; gap: 12px; }
.nav-search { display: flex; align-items: center; background: var(--bg-alt); border-radius: 50px; padding: 0 16px; border: 1px solid var(--border); transition: var(--transition); }
.nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(201,168,76,0.1); }
.nav-search input { border: none; background: transparent; padding: 10px 12px; font-size: 0.9rem; color: var(--text); width: 160px; outline: none; }
.nav-search input::placeholder { color: var(--text-light); }
.nav-search i { color: var(--text-light); font-size: 0.9rem; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; background: none; border: none; }
.nav-toggle span { width: 24px; height: 2px; background: var(--text); border-radius: 4px; transition: var(--transition); }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
@media (max-width: 1024px) {
  .nav-center { display: none; }
  .nav-center.open { display: flex; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(16px); padding: 20px 24px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow); gap: 4px; }
  .nav-center.open a { width: 100%; text-align: center; padding: 12px 20px; }
  .nav-toggle { display: flex; }
  .nav-right .nav-search { display: none; }
}
@media (max-width: 520px) {
  .nav-right .btn { padding: 10px 18px; font-size: 0.85rem; }
  .logo { font-size: 1.2rem; }
}

/* ===== Article Banner ===== */
.article-banner { padding-top: calc(var(--nav-height) + 40px); padding-bottom: 60px; background: linear-gradient(135deg, var(--bg-dark) 0%, var(--secondary) 100%); position: relative; overflow: hidden; min-height: 340px; display: flex; align-items: center; }
.article-banner-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; opacity: 0.2; pointer-events: none; }
.article-banner .container { position: relative; z-index: 2; }
.article-banner .badge { margin-bottom: 16px; background: rgba(201,168,76,0.2); color: var(--primary-light); border: 1px solid rgba(201,168,76,0.3); }
.article-banner h1 { font-size: 2.6rem; font-weight: 800; line-height: 1.25; color: var(--text-white); margin-bottom: 16px; max-width: 800px; letter-spacing: -0.5px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 20px; align-items: center; color: rgba(255,255,255,0.7); font-size: 0.95rem; }
.article-meta i { margin-right: 6px; color: var(--primary-light); }
.article-meta span { display: inline-flex; align-items: center; }
@media (max-width: 768px) {
  .article-banner { min-height: 260px; padding-top: calc(var(--nav-height) + 24px); padding-bottom: 40px; }
  .article-banner h1 { font-size: 1.8rem; }
  .article-meta { gap: 12px; font-size: 0.85rem; flex-wrap: wrap; }
}
@media (max-width: 520px) {
  .article-banner h1 { font-size: 1.4rem; }
  .article-banner { min-height: 220px; padding-top: calc(var(--nav-height) + 16px); padding-bottom: 30px; }
}

/* ===== Article Content ===== */
.article-content-wrap { padding: 48px 0 60px; background: var(--bg); }
.article-layout { display: grid; grid-template-columns: 1fr 300px; gap: 48px; }
.article-body { min-width: 0; }
.article-body .article-text { font-size: 1.05rem; line-height: 1.9; color: var(--text); }
.article-body .article-text p { margin-bottom: 1.6em; }
.article-body .article-text h2 { font-size: 1.6rem; font-weight: 700; margin-top: 2.2em; margin-bottom: 0.8em; color: var(--secondary); }
.article-body .article-text h3 { font-size: 1.25rem; font-weight: 600; margin-top: 1.8em; margin-bottom: 0.6em; color: var(--secondary); }
.article-body .article-text img { border-radius: var(--radius); margin: 2em 0; box-shadow: var(--shadow); }
.article-body .article-text blockquote { border-left: 4px solid var(--primary); padding: 1.2em 1.8em; margin: 2em 0; background: var(--bg-alt); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-light); font-style: italic; }
.article-body .article-text ul, .article-body .article-text ol { padding-left: 1.6em; margin-bottom: 1.6em; }
.article-body .article-text li { margin-bottom: 0.5em; }
.article-body .article-text a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-body .article-text a:hover { color: var(--primary-dark); }
.article-not-found { text-align: center; padding: 80px 20px; }
.article-not-found i { font-size: 4rem; color: var(--text-light); margin-bottom: 20px; display: block; }
.article-not-found h2 { font-size: 1.8rem; margin-bottom: 12px; }
.article-not-found p { color: var(--text-light); margin-bottom: 24px; }
.article-footer-nav { display: flex; justify-content: space-between; align-items: center; margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--border); flex-wrap: wrap; gap: 16px; }
.article-footer-nav a { display: inline-flex; align-items: center; gap: 8px; padding: 10px 24px; border-radius: 50px; background: var(--bg-alt); color: var(--text); font-weight: 500; font-size: 0.95rem; border: 1px solid var(--border); }
.article-footer-nav a:hover { background: var(--primary-light); color: var(--primary-dark); border-color: var(--primary); }
.article-sidebar { min-width: 0; }
.sidebar-card { background: var(--bg-alt); border-radius: var(--radius); padding: 28px; border: 1px solid var(--border); margin-bottom: 24px; }
.sidebar-card h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 16px; color: var(--text); display: flex; align-items: center; gap: 8px; }
.sidebar-card h4 i { color: var(--primary); }
.sidebar-list li { margin-bottom: 12px; }
.sidebar-list a { display: flex; gap: 12px; align-items: flex-start; padding: 8px 0; border-bottom: 1px solid rgba(229,231,235,0.5); }
.sidebar-list a:last-child { border-bottom: none; }
.sidebar-list .thumb { width: 60px; height: 60px; border-radius: var(--radius-sm); object-fit: cover; flex-shrink: 0; background: var(--border); }
.sidebar-list .info { flex: 1; min-width: 0; }
.sidebar-list .info .title { font-size: 0.9rem; font-weight: 600; color: var(--text); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.4; }
.sidebar-list .info .date { font-size: 0.8rem; color: var(--text-light); margin-top: 4px; display: block; }
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; gap: 32px; }
  .article-sidebar { order: -1; }
  .sidebar-card { padding: 20px; }
}
@media (max-width: 768px) {
  .article-content-wrap { padding: 32px 0 40px; }
  .article-body .article-text { font-size: 1rem; }
  .article-body .article-text h2 { font-size: 1.3rem; }
  .article-footer-nav { flex-direction: column; align-items: stretch; }
  .article-footer-nav a { justify-content: center; }
}

/* ===== Related Articles ===== */
.related-section { padding: 64px 0; background: var(--bg-alt); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card { background: var(--bg); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); transition: var(--transition); }
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.related-card .card-img { width: 100%; height: 200px; object-fit: cover; background: var(--border); }
.related-card .card-body { padding: 20px 24px 24px; }
.related-card .card-body .badge { margin-bottom: 10px; }
.related-card .card-body h3 { font-size: 1.1rem; font-weight: 700; line-height: 1.4; margin-bottom: 8px; }
.related-card .card-body h3 a { color: var(--text); }
.related-card .card-body h3 a:hover { color: var(--primary); }
.related-card .card-body p { font-size: 0.9rem; color: var(--text-light); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card .card-meta { display: flex; align-items: center; gap: 16px; margin-top: 12px; font-size: 0.8rem; color: var(--text-light); }
.related-card .card-meta i { margin-right: 4px; }
@media (max-width: 1024px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .related-grid { grid-template-columns: 1fr; }
  .related-card .card-img { height: 180px; }
}

/* ===== CTA Section ===== */
.cta-section { padding: 80px 0; background: linear-gradient(135deg, var(--secondary) 0%, var(--bg-dark) 100%); position: relative; overflow: hidden; text-align: center; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat; opacity: 0.08; pointer-events: none; }
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { font-size: 2.2rem; font-weight: 800; color: var(--text-white); margin-bottom: 16px; }
.cta-section p { color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 32px; font-size: 1.05rem; line-height: 1.6; }
.cta-section .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
@media (max-width: 768px) {
  .cta-section { padding: 56px 0; }
  .cta-section h2 { font-size: 1.6rem; }
  .cta-section p { font-size: 0.95rem; }
  .cta-section .btn-group { flex-direction: column; align-items: center; }
}

/* ===== Footer ===== */
.footer { background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 60px 0 0; }
.footer .container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-brand .logo { color: var(--text-white); margin-bottom: 16px; font-size: 1.6rem; }
.footer-brand p { font-size: 0.95rem; line-height: 1.7; max-width: 320px; color: rgba(255,255,255,0.5); }
.footer h4 { font-size: 1rem; font-weight: 700; color: var(--text-white); margin-bottom: 16px; letter-spacing: 0.3px; }
.footer ul li { margin-bottom: 10px; }
.footer ul a { color: rgba(255,255,255,0.5); font-size: 0.9rem; transition: var(--transition); display: inline-flex; align-items: center; gap: 6px; }
.footer ul a:hover { color: var(--primary); transform: translateX(4px); }
.footer ul a i { font-size: 0.7rem; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding: 24px 0; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: rgba(255,255,255,0.35); }
.footer-bottom a { color: rgba(255,255,255,0.35); }
.footer-bottom a:hover { color: var(--primary); }
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer { padding: 40px 0 0; }
  .footer .container { padding: 0 16px; }
}

/* ===== Responsive fine-tune ===== */
@media (max-width: 520px) {
  .article-banner h1 { font-size: 1.3rem; }
  .article-meta { font-size: 0.8rem; gap: 8px; }
  .related-card .card-body { padding: 16px 18px 20px; }
  .sidebar-card { padding: 16px; }
  .cta-section h2 { font-size: 1.3rem; }
}