/* roulang page: index */
:root {
            --primary: #E53E3E;
            --primary-dark: #C53030;
            --primary-light: #FC8181;
            --secondary: #1E2D3D;
            --secondary-light: #2D4052;
            --accent: #F59E0B;
            --accent-light: #FCD34D;
            --bg: #F8F7F4;
            --bg-alt: #EDF2F7;
            --white: #FFFFFF;
            --text: #1A202C;
            --text-secondary: #4A5568;
            --text-muted: #718096;
            --border: #E2E8F0;
            --border-light: #EDF2F7;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow: 0 4px 12px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.05);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.09), 0 4px 8px rgba(0,0,0,0.05);
            --shadow-lg: 0 16px 40px rgba(0,0,0,0.11), 0 6px 12px rgba(0,0,0,0.06);
            --transition: 0.2s cubic-bezier(0.4,0,0.2,1);
            --transition-slow: 0.35s cubic-bezier(0.4,0,0.2,1);
            --max-width: 1200px;
            --nav-height: 76px;
        }
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
        body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;font-size:16px;line-height:1.65;color:var(--text);background:var(--bg);overflow-x:hidden}
        img{max-width:100%;height:auto;display:block}
        a{text-decoration:none;color:inherit;transition:color var(--transition)}
        ul,ol{list-style:none}
        button,input,select,textarea{font-family:inherit;font-size:inherit;border:none;outline:none;background:none}
        button{cursor:pointer}
        .container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}
        @media(max-width:768px){.container{padding:0 16px}}

        /* Header & Nav */
        .site-header{position:sticky;top:0;z-index:100;background:var(--white);border-bottom:1px solid var(--border-light);box-shadow:var(--shadow-sm)}
        .header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-height);gap:20px}
        .logo-area{display:flex;align-items:center;gap:10px;flex-shrink:0}
        .logo-icon{width:42px;height:42px;background:var(--primary);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:var(--white);font-weight:700;font-size:20px;letter-spacing:-1px}
        .logo-text{font-size:20px;font-weight:700;color:var(--secondary);letter-spacing:0.5px;white-space:nowrap}
        .logo-text span{color:var(--primary)}
        .nav-panel{display:flex;align-items:center;gap:6px;background:var(--bg-alt);border-radius:var(--radius-lg);padding:5px 6px}
        .nav-link{display:flex;align-items:center;gap:6px;padding:9px 18px;border-radius:var(--radius);font-size:14.5px;font-weight:600;color:var(--text-secondary);transition:all var(--transition);white-space:nowrap;position:relative}
        .nav-link:hover{color:var(--primary);background:var(--white);box-shadow:var(--shadow-sm)}
        .nav-link.active{color:var(--white);background:var(--primary);box-shadow:var(--shadow)}
        .nav-link.active:hover{color:var(--white);background:var(--primary-dark)}
        .nav-cta{flex-shrink:0;display:flex;align-items:center;gap:10px}
        .btn-nav{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:var(--radius);font-size:14px;font-weight:600;transition:all var(--transition);white-space:nowrap}
        .btn-nav-primary{background:var(--primary);color:var(--white);box-shadow:var(--shadow-sm)}
        .btn-nav-primary:hover{background:var(--primary-dark);box-shadow:var(--shadow);transform:translateY(-1px)}
        .hamburger{display:none;flex-direction:column;gap:5px;padding:8px;border-radius:var(--radius-sm);transition:background var(--transition)}
        .hamburger span{display:block;width:24px;height:2.5px;background:var(--secondary);border-radius:2px;transition:all var(--transition)}
        .hamburger:hover{background:var(--bg-alt)}
        @media(max-width:860px){
            .nav-panel{display:none;position:absolute;top:var(--nav-height);left:0;right:0;flex-direction:column;background:var(--white);border-radius:0;padding:12px 16px;gap:2px;box-shadow:var(--shadow-lg);border-bottom:2px solid var(--border)}
            .nav-panel.open{display:flex}
            .nav-link{width:100%;justify-content:center;padding:12px 18px;font-size:15px}
            .hamburger{display:flex}
            .nav-cta .btn-nav{font-size:13px;padding:8px 14px}
        }
        @media(max-width:520px){
            .logo-text{font-size:17px}
            .logo-icon{width:36px;height:36px;font-size:17px}
            .btn-nav{font-size:12px;padding:7px 12px}
        }

        /* Hero */
        .hero{position:relative;background:linear-gradient(135deg,var(--secondary) 0%,var(--secondary-light) 50%,#1a1a2e 100%);min-height:580px;display:flex;align-items:center;overflow:hidden}
        .hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:0.25;mix-blend-mode:overlay}
        .hero-particles{position:absolute;inset:0;background:radial-gradient(ellipse at 30% 20%,rgba(229,62,62,0.2) 0%,transparent 60%),radial-gradient(ellipse at 70% 60%,rgba(245,158,11,0.15) 0%,transparent 50%)}
        .hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding-top:40px;padding-bottom:40px}
        .hero-content{color:var(--white)}
        .hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,0.12);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,0.2);padding:8px 16px;border-radius:50px;font-size:13px;font-weight:600;color:var(--accent-light);margin-bottom:20px}
        .hero-badge .dot{width:8px;height:8px;background:var(--accent);border-radius:50%;animation:pulse-dot 2s infinite}
        @keyframes pulse-dot{0%,100%{opacity:1}50%{opacity:0.4}}
        .hero-content h1{font-size:clamp(32px,4.5vw,48px);font-weight:800;line-height:1.2;margin-bottom:18px;letter-spacing:-0.5px}
        .hero-content h1 .highlight{color:var(--accent-light);position:relative}
        .hero-content p{font-size:17px;line-height:1.7;color:rgba(255,255,255,0.85);margin-bottom:28px;max-width:480px}
        .hero-buttons{display:flex;flex-wrap:wrap;gap:12px}
        .btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:var(--radius);font-size:15px;font-weight:600;transition:all var(--transition);white-space:nowrap;letter-spacing:0.3px}
        .btn-primary{background:var(--primary);color:var(--white);box-shadow:0 4px 16px rgba(229,62,62,0.35)}
        .btn-primary:hover{background:var(--primary-dark);box-shadow:0 6px 20px rgba(229,62,62,0.45);transform:translateY(-2px)}
        .btn-outline{background:transparent;color:var(--white);border:2px solid rgba(255,255,255,0.45)}
        .btn-outline:hover{background:rgba(255,255,255,0.1);border-color:var(--white);transform:translateY(-2px)}
        .btn-accent{background:var(--accent);color:#1a1a2e;box-shadow:0 4px 16px rgba(245,158,11,0.3)}
        .btn-accent:hover{background:#FBBF24;box-shadow:0 6px 20px rgba(245,158,11,0.4);transform:translateY(-2px)}
        .hero-visual{display:flex;justify-content:center;align-items:center}
        .hero-card-stack{position:relative;width:100%;max-width:380px}
        .hero-float-card{background:var(--white);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-lg)}
        .hero-float-card .stat-row{display:flex;gap:20px;margin-bottom:16px}
        .hero-float-card .stat-item{text-align:center;flex:1}
        .hero-float-card .stat-num{font-size:26px;font-weight:800;color:var(--primary)}
        .hero-float-card .stat-label{font-size:12px;color:var(--text-muted);margin-top:2px}
        .hero-float-card .live-dot{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--primary);margin-bottom:12px}
        .hero-float-card .live-dot::before{content:'';width:10px;height:10px;background:#10B981;border-radius:50%;animation:pulse-dot 1.5s infinite}
        .hero-float-card .match-item{display:flex;align-items:center;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--border-light);font-size:14px;color:var(--text-secondary)}
        .hero-float-card .match-item:last-child{border-bottom:none}
        .hero-float-card .match-score{font-weight:700;color:var(--text)}
        @media(max-width:860px){
            .hero{min-height:auto;padding:30px 0}
            .hero .container{grid-template-columns:1fr;text-align:center;gap:30px}
            .hero-content p{margin-left:auto;margin-right:auto}
            .hero-buttons{justify-content:center}
            .hero-card-stack{max-width:300px;margin:0 auto}
        }

        /* Section */
        .section{padding:70px 0}
        @media(max-width:768px){.section{padding:45px 0}}
        .section-header{text-align:center;margin-bottom:48px}
        .section-label{display:inline-block;font-size:13px;font-weight:700;color:var(--primary);text-transform:uppercase;letter-spacing:1.5px;margin-bottom:8px}
        .section-title{font-size:clamp(24px,3vw,32px);font-weight:800;color:var(--secondary);margin-bottom:10px;letter-spacing:-0.3px}
        .section-subtitle{font-size:15px;color:var(--text-muted);max-width:550px;margin:0 auto;line-height:1.6}

        /* Features Grid */
        .features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
        @media(max-width:860px){.features-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:520px){.features-grid{grid-template-columns:1fr}}
        .feature-card{background:var(--white);border-radius:var(--radius-lg);padding:28px 24px;border:1px solid var(--border-light);transition:all var(--transition-slow);position:relative;overflow:hidden}
        .feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform var(--transition-slow)}
        .feature-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);border-color:transparent}
        .feature-card:hover::before{transform:scaleX(1)}
        .feature-icon{width:50px;height:50px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px;background:var(--bg-alt)}
        .feature-card h3{font-size:17px;font-weight:700;color:var(--secondary);margin-bottom:8px}
        .feature-card p{font-size:14px;color:var(--text-muted);line-height:1.6}

        /* Category Entrance */
        .category-section{background:var(--secondary);position:relative;overflow:hidden}
        .category-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:0.12}
        .category-section .container{position:relative;z-index:2}
        .category-section .section-title{color:var(--white)}
        .category-section .section-subtitle{color:rgba(255,255,255,0.7)}
        .category-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
        .category-card{background:rgba(255,255,255,0.06);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,0.15);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--transition-slow);cursor:pointer}
        .category-card:hover{background:rgba(255,255,255,0.12);border-color:rgba(255,255,255,0.3);transform:translateY(-4px);box-shadow:0 20px 40px rgba(0,0,0,0.3)}
        .category-card-img{height:160px;overflow:hidden;position:relative}
        .category-card-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
        .category-card:hover .category-card-img img{transform:scale(1.06)}
        .category-card-body{padding:20px}
        .category-card-body h3{font-size:18px;font-weight:700;color:var(--white);margin-bottom:6px}
        .category-card-body p{font-size:13px;color:rgba(255,255,255,0.65);line-height:1.5;margin-bottom:12px}
        .category-card-link{display:inline-flex;align-items:center;gap:4px;font-size:13px;font-weight:600;color:var(--accent-light);transition:gap var(--transition)}
        .category-card:hover .category-card-link{gap:8px}

        /* News List */
        .news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
        @media(max-width:768px){.news-grid{grid-template-columns:1fr}}
        .news-card{background:var(--white);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border-light);transition:all var(--transition-slow);display:flex;flex-direction:column}
        .news-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:transparent}
        .news-card-img{height:180px;overflow:hidden;position:relative}
        .news-card-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
        .news-card:hover .news-card-img img{transform:scale(1.05)}
        .news-card-badge{position:absolute;top:12px;left:12px;background:var(--primary);color:var(--white);font-size:11px;font-weight:700;padding:4px 10px;border-radius:50px;z-index:2}
        .news-card-body{padding:18px 20px;flex:1;display:flex;flex-direction:column}
        .news-card-body h3{font-size:16px;font-weight:700;color:var(--secondary);margin-bottom:6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
        .news-card-body p{font-size:13px;color:var(--text-muted);line-height:1.55;margin-bottom:12px;flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
        .news-card-meta{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--text-muted)}
        .news-card-meta .tag{background:var(--bg-alt);padding:3px 10px;border-radius:50px;font-weight:600;color:var(--primary);font-size:11px}
        .news-empty{text-align:center;padding:60px 20px;color:var(--text-muted);font-size:15px;background:var(--white);border-radius:var(--radius-lg);border:1px dashed var(--border)}

        /* Stats */
        .stats-section{background:var(--white);border-top:1px solid var(--border-light);border-bottom:1px solid var(--border-light)}
        .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
        @media(max-width:768px){.stats-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:480px){.stats-grid{grid-template-columns:1fr}}
        .stat-block{text-align:center;padding:32px 20px;border-right:1px solid var(--border-light)}
        .stat-block:last-child{border-right:none}
        @media(max-width:768px){.stat-block:nth-child(2){border-right:none}}
        @media(max-width:480px){.stat-block{border-right:none;border-bottom:1px solid var(--border-light)}.stat-block:last-child{border-bottom:none}}
        .stat-number{font-size:36px;font-weight:800;color:var(--primary);line-height:1}
        .stat-unit{font-size:16px;font-weight:600;color:var(--primary)}
        .stat-desc{font-size:13px;color:var(--text-muted);margin-top:6px}

        /* Steps */
        .steps-list{display:flex;gap:24px;justify-content:center;flex-wrap:wrap}
        .step-item{flex:1;min-width:200px;max-width:260px;text-align:center;position:relative}
        .step-number{width:56px;height:56px;border-radius:50%;background:var(--primary);color:var(--white);font-size:22px;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;box-shadow:0 6px 20px rgba(229,62,62,0.3)}
        .step-item h4{font-size:16px;font-weight:700;color:var(--secondary);margin-bottom:6px}
        .step-item p{font-size:13px;color:var(--text-muted);line-height:1.5}
        @media(max-width:768px){.steps-list{flex-direction:column;align-items:center}.step-item{max-width:100%}}

        /* FAQ */
        .faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
        .faq-item{background:var(--white);border-radius:var(--radius);border:1px solid var(--border-light);overflow:hidden;transition:all var(--transition)}
        .faq-item:hover{border-color:var(--border);box-shadow:var(--shadow-sm)}
        .faq-q{padding:18px 22px;font-weight:700;font-size:16px;color:var(--secondary);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;user-select:none}
        .faq-q .faq-arrow{font-size:18px;color:var(--primary);transition:transform var(--transition);flex-shrink:0}
        .faq-item.open .faq-arrow{transform:rotate(180deg)}
        .faq-a{max-height:0;overflow:hidden;transition:max-height var(--transition-slow),padding var(--transition-slow)}
        .faq-item.open .faq-a{max-height:300px;padding:0 22px 18px}
        .faq-a p{font-size:14px;color:var(--text-secondary);line-height:1.65}

        /* CTA */
        .cta-section{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);position:relative;overflow:hidden}
        .cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;opacity:0.1}
        .cta-section .container{position:relative;z-index:2;text-align:center}
        .cta-section .section-title{color:var(--white)}
        .cta-section .section-subtitle{color:rgba(255,255,255,0.8)}
        .cta-buttons{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:28px}
        .btn-cta-white{background:var(--white);color:var(--primary);font-weight:700;padding:14px 30px;border-radius:var(--radius);font-size:15px;transition:all var(--transition);box-shadow:var(--shadow-md)}
        .btn-cta-white:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);background:#fefefe}

        /* Footer */
        .site-footer{background:var(--secondary);color:rgba(255,255,255,0.7);padding:50px 0 24px}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:36px}
        @media(max-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
        @media(max-width:480px){.footer-grid{grid-template-columns:1fr}}
        .footer-brand .logo-text{color:var(--white);font-size:20px;margin-bottom:10px;display:block}
        .footer-brand p{font-size:13px;line-height:1.7;color:rgba(255,255,255,0.55);max-width:260px}
        .footer-col h4{color:var(--white);font-size:14px;font-weight:700;margin-bottom:14px;letter-spacing:0.5px}
        .footer-col ul li{margin-bottom:8px}
        .footer-col ul li a{font-size:13px;color:rgba(255,255,255,0.55);transition:color var(--transition)}
        .footer-col ul li a:hover{color:var(--accent-light)}
        .footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:20px;text-align:center;font-size:12px;color:rgba(255,255,255,0.4)}
        .footer-bottom strong{color:rgba(255,255,255,0.7)}

        /* Utility */
        .text-center{text-align:center}
        .mt-0{margin-top:0}
        .mb-0{margin-bottom:0}

/* roulang page: category1 */
:root {
            --primary: #DC2626;
            --primary-hover: #B91C1C;
            --accent: #F59E0B;
            --bg: #F9FAFB;
            --text: #1F2937;
            --text-muted: #6B7280;
            --border: #E5E7EB;
            --shadow: 0 10px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.02);
            --radius: 1rem;
        }
        *,
        ::before,
        ::after { box-sizing: border-box; }
        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica Neue, Arial, Noto Sans, sans-serif;
            background-color: #F9FAFB;
            color: #1F2937;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color 0.2s ease; }
        button { font-family: inherit; cursor: pointer; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

        /* navigation panel card design */
        .site-header {
            background: linear-gradient(135deg, #1A1A2E 0%, #16213E 100%);
            position: sticky;
            top: 0;
            z-index: 50;
            padding: 0.75rem 0;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.2);
        }
        .nav-panel {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255,255,255,0.08);
            backdrop-filter: blur(12px);
            border-radius: 2rem;
            padding: 0.5rem 1.5rem;
            border: 1px solid rgba(255,255,255,0.1);
        }
        .logo-text {
            font-size: 1.5rem;
            font-weight: 700;
            color: white;
            letter-spacing: 0.5px;
        }
        .nav-links {
            display: flex;
            gap: 0.5rem;
            align-items: center;
        }
        .nav-link {
            padding: 0.5rem 1.25rem;
            border-radius: 2rem;
            font-weight: 500;
            color: rgba(255,255,255,0.8);
            transition: all 0.25s ease;
            background: transparent;
        }
        .nav-link:hover { background: rgba(255,255,255,0.15); color: white; }
        .nav-link.active {
            background: var(--primary);
            color: white;
            box-shadow: 0 4px 14px 0 rgba(220,38,38,0.4);
        }
        .cta-btn {
            background: var(--accent);
            color: #1F2937;
            padding: 0.5rem 1.75rem;
            border-radius: 2rem;
            font-weight: 600;
            box-shadow: 0 4px 10px rgba(245,158,11,0.3);
            transition: all 0.2s;
        }
        .cta-btn:hover { background: #FCD34D; transform: translateY(-1px); box-shadow: 0 8px 20px rgba(245,158,11,0.4); }

        /* section titles */
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: #1F2937;
            margin-bottom: 0.75rem;
        }
        .section-subtitle {
            font-size: 1.125rem;
            color: #6B7280;
            max-width: 600px;
        }

        /* card enhancements */
        .news-card {
            background: white;
            border-radius: 1.25rem;
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover { transform: translateY(-5px); box-shadow: 0 20px 35px -15px rgba(0,0,0,0.12); }
        .tag {
            display: inline-block;
            background: #FEE2E2;
            color: #B91C1C;
            padding: 0.2rem 0.75rem;
            border-radius: 1.5rem;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .tag-blue { background: #DBEAFE; color: #1E40AF; }
        .tag-green { background: #D1FAE5; color: #065F46; }
        .tag-purple { background: #EDE9FE; color: #5B21B6; }

        .filter-btn {
            padding: 0.4rem 1.25rem;
            border-radius: 2rem;
            border: 1px solid #D1D5DB;
            background: white;
            color: #4B5563;
            font-weight: 500;
            transition: all 0.2s;
            cursor: pointer;
        }
        .filter-btn.active, .filter-btn:hover { background: var(--primary); color: white; border-color: var(--primary); }

        /* FAQ */
        .faq-item {
            background: white;
            border-radius: 1rem;
            padding: 1.25rem;
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02);
            border: 1px solid #F3F4F6;
            transition: all 0.2s;
        }
        .faq-item:hover { border-color: #FCA5A5; }

        /* footer */
        .site-footer {
            background: #1A1A2E;
            color: #D1D5DB;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-brand .logo-text { color: white; margin-bottom: 0.75rem; display: block; }
        .footer-col h4 { color: white; font-weight: 600; margin-bottom: 1rem; }
        .footer-col ul { list-style: none; padding: 0; margin: 0; }
        .footer-col li { margin-bottom: 0.5rem; }
        .footer-col a { color: #9CA3AF; transition: color 0.2s; }
        .footer-col a:hover { color: white; }
        .footer-bottom {
            border-top: 1px solid #374151;
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.875rem;
        }

        @media (max-width: 768px) {
            .nav-panel { flex-wrap: wrap; justify-content: center; gap: 0.75rem; }
            .nav-links { flex-wrap: wrap; justify-content: center; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .section-title { font-size: 1.75rem; }
        }
        @media (max-width: 520px) {
            .nav-link { padding: 0.4rem 1rem; font-size: 0.875rem; }
            .footer-grid { grid-template-columns: 1fr; }
            .cta-btn { padding: 0.4rem 1.25rem; font-size: 0.875rem; }
        }

/* roulang page: article */
:root {
            --primary: #1a3a5c;
            --primary-600: #152f4a;
            --primary-700: #0f2438;
            --accent: #e63946;
            --accent-500: #d62839;
            --accent-light: #fef0f1;
            --gold: #f0a500;
            --gold-light: #fff8e7;
            --bg: #f4f5f7;
            --bg-card: #ffffff;
            --bg-dark: #0d1b2a;
            --text: #1a1a2e;
            --text-secondary: #5a6072;
            --text-muted: #8b91a0;
            --border: #e2e5ea;
            --border-light: #eef0f4;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.06), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.08), 0 4px 10px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.10), 0 6px 16px rgba(0, 0, 0, 0.06);
            --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height: 68px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            outline: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            height: 100%;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 750;
            color: var(--primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color var(--transition);
        }
        .logo:hover {
            color: var(--accent);
        }
        .logo i {
            color: var(--accent);
            font-size: 1.35rem;
        }
        .nav-panel {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--bg);
            border-radius: 40px;
            padding: 5px 6px;
            box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.04);
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: 32px;
            font-size: 0.95rem;
            font-weight: 550;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(255, 255, 255, 0.7);
        }
        .nav-link.active {
            background: #ffffff;
            color: var(--primary);
            font-weight: 650;
            box-shadow: var(--shadow-sm);
        }
        .nav-link .nav-badge {
            display: inline-block;
            font-size: 0.7rem;
            background: var(--accent);
            color: #fff;
            padding: 2px 8px;
            border-radius: 20px;
            font-weight: 600;
            letter-spacing: 0.03em;
            animation: pulse-badge 2.5s ease-in-out infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.08);
            }
        }
        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            color: var(--text);
            background: var(--bg);
            transition: all var(--transition);
        }
        .menu-toggle:hover {
            background: var(--border);
        }
        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            .nav-panel {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                flex-direction: column;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                padding: 16px 20px;
                gap: 4px;
                background: #fff;
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition-slow);
                z-index: 999;
            }
            .nav-panel.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-link {
                width: 100%;
                justify-content: center;
                padding: 13px 20px;
                font-size: 1rem;
                border-radius: var(--radius);
            }
            .nav-link.active {
                background: var(--primary);
                color: #fff;
            }
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            padding: 18px 0;
            background: #fff;
            border-bottom: 1px solid var(--border-light);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            color: var(--border);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 550;
        }

        /* ========== MAIN LAYOUT ========== */
        .main-content {
            padding: 40px 0 60px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 36px;
            align-items: start;
        }
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        /* ========== ARTICLE MAIN ========== */
        .article-main {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            overflow: hidden;
        }
        .article-cover {
            width: 100%;
            aspect-ratio: 16 / 8;
            object-fit: cover;
            border-radius: 0;
        }
        .article-body {
            padding: 32px 36px 40px;
        }
        @media (max-width: 768px) {
            .article-body {
                padding: 20px 18px 28px;
            }
        }
        .article-meta-top {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
            margin-bottom: 18px;
        }
        .article-category-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: var(--accent-light);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 650;
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: 0.02em;
        }
        .article-date {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .article-views {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .article-title {
            font-size: 1.9rem;
            font-weight: 750;
            line-height: 1.35;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: -0.015em;
        }
        @media (max-width: 768px) {
            .article-title {
                font-size: 1.45rem;
            }
        }
        .article-tags-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 24px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-light);
        }
        .article-tag-item {
            display: inline-block;
            font-size: 0.78rem;
            color: var(--text-secondary);
            background: var(--bg);
            padding: 4px 12px;
            border-radius: 16px;
            transition: all var(--transition);
        }
        .article-tag-item:hover {
            background: var(--primary);
            color: #fff;
        }
        .article-content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text);
            word-break: break-word;
        }
        .article-content h2 {
            font-size: 1.45rem;
            font-weight: 700;
            margin: 32px 0 14px;
            color: var(--primary);
            padding-left: 14px;
            border-left: 4px solid var(--accent);
            line-height: 1.4;
        }
        .article-content h3 {
            font-size: 1.2rem;
            font-weight: 650;
            margin: 24px 0 10px;
            color: var(--text);
        }
        .article-content p {
            margin-bottom: 16px;
        }
        .article-content img {
            margin: 20px 0;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
        }
        .article-content blockquote {
            margin: 20px 0;
            padding: 18px 22px;
            background: var(--gold-light);
            border-left: 4px solid var(--gold);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content ul,
        .article-content ol {
            margin: 14px 0;
            padding-left: 22px;
        }
        .article-content ul {
            list-style: disc;
        }
        .article-content ol {
            list-style: decimal;
        }
        .article-content li {
            margin-bottom: 6px;
        }
        .article-content a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: var(--primary);
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 0.9rem;
        }
        .article-content th,
        .article-content td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-content th {
            background: var(--bg);
            font-weight: 650;
        }

        /* ========== ARTICLE NOT FOUND ========== */
        .not-found-block {
            text-align: center;
            padding: 60px 30px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
        }
        .not-found-block .nf-icon {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 18px;
            opacity: 0.6;
        }
        .not-found-block h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }
        .not-found-block p {
            color: var(--text-secondary);
            margin-bottom: 22px;
            font-size: 1rem;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 12px 26px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 600;
            transition: all var(--transition);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.35);
        }
        .btn-primary:hover {
            background: var(--accent-500);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.45);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 2px solid var(--border);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            background: var(--bg);
            color: var(--primary);
        }

        /* ========== SIDEBAR ========== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: calc(var(--header-height) + 24px);
        }
        @media (max-width: 1024px) {
            .sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 16px;
            }
            .sidebar>* {
                flex: 1 1 260px;
                min-width: 240px;
            }
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 22px 20px;
        }
        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent);
            display: inline-block;
        }
        .sidebar-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 7px;
        }
        .sidebar-card ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .sidebar-card ul li a i {
            font-size: 0.7rem;
            color: var(--accent);
        }
        .sidebar-cta-card {
            background: linear-gradient(135deg, var(--primary), var(--primary-700));
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-md);
        }
        .sidebar-cta-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
            border: none;
            padding: 0;
        }
        .sidebar-cta-card p {
            font-size: 0.88rem;
            opacity: 0.85;
            margin-bottom: 16px;
            line-height: 1.5;
        }
        .sidebar-cta-card .btn {
            background: #fff;
            color: var(--primary);
            font-weight: 650;
            box-shadow: var(--shadow-sm);
        }
        .sidebar-cta-card .btn:hover {
            background: var(--gold);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ========== RELATED POSTS ========== */
        .related-section {
            padding: 52px 0 40px;
        }
        .section-heading {
            text-align: center;
            margin-bottom: 32px;
        }
        .section-heading h2 {
            font-size: 1.7rem;
            font-weight: 750;
            color: var(--text);
            letter-spacing: -0.015em;
        }
        .section-heading .heading-line {
            display: block;
            width: 50px;
            height: 3px;
            background: var(--accent);
            margin: 10px auto 0;
            border-radius: 3px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }
        @media (max-width: 900px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 560px) {
            .related-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .related-card .card-cover {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 16px 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-cat {
            font-size: 0.73rem;
            font-weight: 650;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: 6px;
        }
        .related-card .card-title {
            font-size: 0.98rem;
            font-weight: 650;
            line-height: 1.4;
            color: var(--text);
            margin-bottom: 8px;
            flex: 1;
        }
        .related-card:hover .card-title {
            color: var(--accent);
        }
        .related-card .card-date {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 48px 0 56px;
        }
        .cta-block {
            background: linear-gradient(145deg, var(--primary), var(--primary-600));
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-block::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-block h2 {
            font-size: 1.8rem;
            font-weight: 750;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-block p {
            font-size: 1.05rem;
            opacity: 0.88;
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 1;
        }
        .cta-block .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            background: var(--accent);
            color: #fff;
            font-size: 1rem;
            font-weight: 650;
            border-radius: 40px;
            transition: all var(--transition);
            box-shadow: 0 6px 22px rgba(230, 57, 70, 0.4);
            position: relative;
            z-index: 1;
            letter-spacing: 0.02em;
        }
        .cta-block .btn-cta:hover {
            background: #fff;
            color: var(--accent);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.25);
            transform: translateY(-3px);
        }
        @media (max-width: 600px) {
            .cta-block {
                padding: 32px 20px;
            }
            .cta-block h2 {
                font-size: 1.4rem;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-dark);
            color: #c5cad3;
            padding: 48px 0 0;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }
        .footer-brand .logo-text {
            font-size: 1.35rem;
            font-weight: 750;
            color: #fff;
            display: block;
            margin-bottom: 10px;
        }
        .footer-brand p {
            color: #9aa0ad;
            line-height: 1.6;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 650;
            margin-bottom: 12px;
        }
        .footer-col ul li {
            margin-bottom: 7px;
        }
        .footer-col ul li a {
            color: #9aa0ad;
            transition: color var(--transition);
            font-size: 0.88rem;
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            color: #6e7583;
            font-size: 0.82rem;
        }
        .footer-bottom strong {
            color: #c5cad3;
        }

        /* ========== SHARE BAR ========== */
        .share-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
            flex-wrap: wrap;
        }
        .share-bar span {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            font-size: 1rem;
            transition: all var(--transition);
            background: var(--bg);
            color: var(--text-secondary);
        }
        .share-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }