/* roulang page: index */
:root {
            --color-primary: #2563eb;
            --color-primary-dark: #1d4ed8;
            --color-primary-light: #dbeafe;
            --color-accent: #a855f7;
            --color-accent-dark: #9333ea;
            --color-warm: #f59e0b;
            --color-text: #1e293b;
            --color-text-soft: #475569;
            --color-text-muted: #94a3b8;
            --color-bg: #ffffff;
            --color-bg-alt: #f8fafc;
            --color-bg-dark: #0f172a;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --radius-2xl: 1.5rem;
            --radius-3xl: 2rem;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 1px 3px rgba(0,0,0,0.06), 0 4px 24px rgba(0,0,0,0.04);
            --shadow-lg: 0 4px 40px rgba(0,0,0,0.08);
            --shadow-xl: 0 8px 60px rgba(0,0,0,0.1);
            --transition-fast: 0.15s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4,0,0.2,1);
        }
        *,*::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:'Inter','PingFang SC','Microsoft YaHei',system-ui,sans-serif;line-height:1.7;color:var(--color-text);background:var(--color-bg);overflow-x:hidden}
        a{text-decoration:none;color:inherit;transition:color var(--transition-fast)}
        img{max-width:100%;height:auto;display:block}
        button,input,select,textarea{font-family:inherit;font-size:inherit}
        ::selection{background:var(--color-primary);color:#fff}
        .container{width:100%;max-width:1280px;margin:0 auto;padding:0 1.5rem}
        @media(min-width:768px){.container{padding:0 2rem}}
        @media(min-width:1024px){.container{padding:0 2.5rem}}

        /* Header */
        .site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,0.88);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--color-border-light);transition:all var(--transition-smooth)}
        .site-header.scrolled{box-shadow:var(--shadow-md)}
        .header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:1.5rem}
        .logo-link{display:flex;align-items:center;gap:0.625rem;font-weight:800;font-size:1.35rem;color:var(--color-primary-dark);letter-spacing:-0.02em;white-space:nowrap;flex-shrink:0}
        .logo-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.15rem;font-weight:900;box-shadow:0 4px 16px rgba(37,99,235,0.3)}
        .nav-links{display:none;align-items:center;gap:0.25rem;list-style:none}
        @media(min-width:768px){.nav-links{display:flex}}
        .nav-links a{display:inline-flex;align-items:center;gap:0.35rem;padding:0.5rem 1rem;border-radius:var(--radius-md);font-weight:500;font-size:0.95rem;color:var(--color-text-soft);transition:all var(--transition-fast);white-space:nowrap}
        .nav-links a:hover{color:var(--color-primary);background:var(--color-primary-light)}
        .nav-links a.active{color:var(--color-primary);background:var(--color-primary-light);font-weight:600}
        .nav-links a .nav-badge{font-size:0.7rem;padding:0.15rem 0.45rem;border-radius:9999px;background:var(--color-accent);color:#fff;font-weight:600}
        .header-actions{display:flex;align-items:center;gap:0.75rem;flex-shrink:0}
        .btn-sm{display:inline-flex;align-items:center;gap:0.4rem;padding:0.5rem 1.1rem;border-radius:var(--radius-md);font-weight:600;font-size:0.9rem;cursor:pointer;border:none;transition:all var(--transition-fast);white-space:nowrap}
        .btn-sm-primary{background:var(--color-primary);color:#fff;box-shadow:0 2px 8px rgba(37,99,235,0.3)}
        .btn-sm-primary:hover{background:var(--color-primary-dark);box-shadow:0 4px 16px rgba(37,99,235,0.4);transform:translateY(-1px)}
        .mobile-menu-btn{display:flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:var(--radius-md);border:1px solid var(--color-border);background:#fff;cursor:pointer;color:var(--color-text);font-size:1.2rem;transition:all var(--transition-fast)}
        .mobile-menu-btn:hover{background:var(--color-bg-alt);border-color:var(--color-primary-light)}
        @media(min-width:768px){.mobile-menu-btn{display:none}}
        .mobile-menu{display:none;position:fixed;top:68px;left:0;right:0;background:rgba(255,255,255,0.97);backdrop-filter:blur(20px);border-bottom:1px solid var(--color-border);padding:1rem 1.5rem;z-index:999;flex-direction:column;gap:0.5rem;box-shadow:var(--shadow-lg)}
        .mobile-menu.open{display:flex}
        .mobile-menu a{display:flex;align-items:center;gap:0.5rem;padding:0.75rem 1rem;border-radius:var(--radius-md);font-weight:500;color:var(--color-text-soft);transition:all var(--transition-fast)}
        .mobile-menu a:hover{background:var(--color-primary-light);color:var(--color-primary)}
        .mobile-menu a.active{background:var(--color-primary-light);color:var(--color-primary);font-weight:600}
        @media(min-width:768px){.mobile-menu{display:none!important}}

        /* Hero */
        .hero-section{position:relative;padding:3rem 0 4rem;overflow:hidden;background:linear-gradient(180deg,#f0f4ff 0%,#faf5ff 40%,#fff 100%)}
        @media(min-width:768px){.hero-section{padding:4.5rem 0 6rem}}
        .hero-bg-pattern{position:absolute;inset:0;pointer-events:none;opacity:0.5}
        .hero-bg-pattern::before{content:'';position:absolute;top:-20%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(168,85,247,0.12) 0%,transparent 70%);border-radius:50%}
        .hero-bg-pattern::after{content:'';position:absolute;bottom:-15%;left:-8%;width:500px;height:500px;background:radial-gradient(circle,rgba(37,99,235,0.1) 0%,transparent 70%);border-radius:50%}
        .hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:2.5rem;align-items:center}
        @media(min-width:768px){.hero-inner{grid-template-columns:1fr 1fr;gap:3rem}}
        .hero-content{display:flex;flex-direction:column;gap:1.25rem}
        .hero-badge{display:inline-flex;align-items:center;gap:0.4rem;padding:0.35rem 0.9rem;border-radius:9999px;background:var(--color-primary-light);color:var(--color-primary);font-weight:600;font-size:0.85rem;width:fit-content;border:1px solid rgba(37,99,235,0.2)}
        .hero-badge .dot{width:7px;height:7px;border-radius:50%;background:#22c55e;animation:pulse-dot 2s infinite}
        @keyframes pulse-dot{0%,100%{opacity:1}50%{opacity:0.4}}
        .hero-title{font-size:2.25rem;font-weight:900;line-height:1.15;letter-spacing:-0.03em;color:var(--color-text)}
        @media(min-width:768px){.hero-title{font-size:3rem}}
        @media(min-width:1024px){.hero-title{font-size:3.5rem}}
        .hero-title .highlight{background:linear-gradient(135deg,var(--color-primary),var(--color-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
        .hero-desc{font-size:1.05rem;color:var(--color-text-soft);line-height:1.75;max-width:520px}
        @media(min-width:768px){.hero-desc{font-size:1.1rem}}
        .hero-actions{display:flex;flex-wrap:wrap;gap:0.75rem;margin-top:0.5rem}
        .btn{display:inline-flex;align-items:center;gap:0.5rem;padding:0.8rem 1.75rem;border-radius:var(--radius-lg);font-weight:600;font-size:1rem;cursor:pointer;border:none;transition:all var(--transition-smooth);white-space:nowrap}
        .btn-primary{background:var(--color-primary);color:#fff;box-shadow:0 4px 20px rgba(37,99,235,0.35)}
        .btn-primary:hover{background:var(--color-primary-dark);box-shadow:0 6px 28px rgba(37,99,235,0.45);transform:translateY(-2px)}
        .btn-outline{background:#fff;color:var(--color-primary);border:2px solid var(--color-primary);box-shadow:var(--shadow-sm)}
        .btn-outline:hover{background:var(--color-primary-light);border-color:var(--color-primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-md)}
        .hero-visual{position:relative;display:flex;align-items:center;justify-content:center}
        .hero-image-wrapper{position:relative;border-radius:var(--radius-2xl);overflow:hidden;box-shadow:var(--shadow-xl);width:100%;aspect-ratio:4/3;background:linear-gradient(135deg,#1e3a8a,#581c87)}
        @media(min-width:768px){.hero-image-wrapper{aspect-ratio:16/11}}
        .hero-image-wrapper img{width:100%;height:100%;object-fit:cover;opacity:0.85}
        .hero-image-wrapper .hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(15,23,42,0.7) 100%)}
        .hero-image-badge{position:absolute;bottom:1.25rem;left:1.25rem;right:1.25rem;display:flex;gap:0.6rem;flex-wrap:wrap}
        .hero-image-badge span{display:inline-flex;align-items:center;gap:0.3rem;padding:0.35rem 0.75rem;border-radius:9999px;background:rgba(255,255,255,0.92);color:var(--color-text);font-weight:600;font-size:0.8rem;backdrop-filter:blur(8px)}
        .hero-image-badge span i{color:#22c55e;font-size:0.6rem}
        .hero-stats{display:flex;gap:1.5rem;flex-wrap:wrap;margin-top:0.5rem;padding-top:0.75rem;border-top:1px solid var(--color-border-light)}
        .hero-stat{text-align:center}
        .hero-stat .stat-number{font-size:1.6rem;font-weight:800;color:var(--color-primary-dark);letter-spacing:-0.02em}
        .hero-stat .stat-label{font-size:0.8rem;color:var(--color-text-muted);margin-top:0.1rem}

        /* Sections */
        .section{padding:3.5rem 0}
        @media(min-width:768px){.section{padding:5rem 0}}
        .section-header{text-align:center;margin-bottom:2.5rem}
        @media(min-width:768px){.section-header{margin-bottom:3.5rem}}
        .section-label{display:inline-block;font-size:0.85rem;font-weight:700;text-transform:uppercase;letter-spacing:0.06em;color:var(--color-accent);margin-bottom:0.5rem}
        .section-title{font-size:1.75rem;font-weight:800;letter-spacing:-0.02em;color:var(--color-text);margin-bottom:0.75rem}
        @media(min-width:768px){.section-title{font-size:2.25rem}}
        .section-subtitle{font-size:1rem;color:var(--color-text-soft);max-width:600px;margin:0 auto;line-height:1.7}

        /* Cards Grid */
        .cards-grid{display:grid;grid-template-columns:1fr;gap:1.25rem}
        @media(min-width:520px){.cards-grid{grid-template-columns:repeat(2,1fr);gap:1.5rem}}
        @media(min-width:1024px){.cards-grid{grid-template-columns:repeat(3,1fr);gap:1.75rem}}
        .card{background:#fff;border-radius:var(--radius-xl);border:1px solid var(--color-border-light);padding:1.5rem;transition:all var(--transition-smooth);position:relative;overflow:hidden;display:flex;flex-direction:column;gap:0.75rem}
        .card:hover{border-color:var(--color-primary-light);box-shadow:var(--shadow-lg);transform:translateY(-3px)}
        .card-icon{width:48px;height:48px;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:1.3rem;flex-shrink:0}
        .card-icon.blue{background:#eff6ff;color:#2563eb}
        .card-icon.purple{background:#faf5ff;color:#a855f7}
        .card-icon.amber{background:#fffbeb;color:#f59e0b}
        .card-icon.green{background:#f0fdf4;color:#22c55e}
        .card-title{font-weight:700;font-size:1.1rem;color:var(--color-text);line-height:1.35}
        .card-desc{font-size:0.9rem;color:var(--color-text-soft);line-height:1.6;flex-grow:1}
        .card-link{display:inline-flex;align-items:center;gap:0.3rem;font-weight:600;font-size:0.9rem;color:var(--color-primary);transition:gap var(--transition-fast)}
        .card-link:hover{gap:0.6rem;color:var(--color-primary-dark)}
        .card-link i{font-size:0.75rem;transition:transform var(--transition-fast)}
        .card-link:hover i{transform:translateX(2px)}

        /* Feature Cards with Cover */
        .feature-cards{display:grid;grid-template-columns:1fr;gap:1.5rem}
        @media(min-width:768px){.feature-cards{grid-template-columns:repeat(2,1fr);gap:2rem}}
        .feature-card{background:#fff;border-radius:var(--radius-2xl);overflow:hidden;border:1px solid var(--color-border-light);transition:all var(--transition-smooth);display:flex;flex-direction:column}
        .feature-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
        .feature-card-image{width:100%;aspect-ratio:16/9;overflow:hidden;position:relative}
        .feature-card-image img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
        .feature-card:hover .feature-card-image img{transform:scale(1.04)}
        .feature-card-body{padding:1.25rem 1.5rem 1.5rem;display:flex;flex-direction:column;gap:0.5rem;flex-grow:1}
        .feature-card-tag{display:inline-block;font-size:0.78rem;font-weight:600;color:var(--color-accent);background:#faf5ff;padding:0.2rem 0.6rem;border-radius:9999px;width:fit-content}
        .feature-card-title{font-weight:700;font-size:1.1rem;color:var(--color-text);line-height:1.35}

        /* News List */
        .news-list{display:flex;flex-direction:column;gap:0;border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--color-border-light);background:#fff}
        .news-item{display:flex;align-items:center;gap:0.75rem;padding:1rem 1.25rem;border-bottom:1px solid var(--color-border-light);transition:all var(--transition-fast);cursor:pointer}
        .news-item:last-child{border-bottom:none}
        .news-item:hover{background:var(--color-bg-alt)}
        @media(min-width:768px){.news-item{padding:1.1rem 1.5rem;gap:1rem}}
        .news-item-date{font-size:0.82rem;color:var(--color-text-muted);white-space:nowrap;font-weight:500;min-width:75px}
        .news-item-cat{font-size:0.75rem;font-weight:600;padding:0.2rem 0.55rem;border-radius:9999px;white-space:nowrap;flex-shrink:0}
        .news-item-cat.guide{background:#eff6ff;color:#2563eb}
        .news-item-cat.security{background:#fef3c7;color:#b45309}
        .news-item-cat.update{background:#f0fdf4;color:#16a34a}
        .news-item-title{font-weight:500;font-size:0.95rem;color:var(--color-text);line-height:1.4;flex-grow:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
        .news-item-title a{color:inherit}
        .news-item-title a:hover{color:var(--color-primary)}
        .news-item-arrow{color:var(--color-text-muted);font-size:0.7rem;flex-shrink:0;transition:all var(--transition-fast)}
        .news-item:hover .news-item-arrow{color:var(--color-primary);transform:translateX(2px)}
        .news-empty{text-align:center;padding:3rem 1.5rem;color:var(--color-text-muted);font-size:0.95rem}

        /* Hot Grid */
        .hot-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0.75rem}
        @media(min-width:640px){.hot-grid{grid-template-columns:repeat(3,1fr);gap:1rem}}
        @media(min-width:1024px){.hot-grid{grid-template-columns:repeat(4,1fr);gap:1.25rem}}
        .hot-card{position:relative;border-radius:var(--radius-xl);overflow:hidden;aspect-ratio:3/4;cursor:pointer;background:var(--color-bg-alt);transition:all var(--transition-smooth)}
        .hot-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
        .hot-card img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
        .hot-card:hover img{transform:scale(1.06)}
        .hot-card-overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(15,23,42,0.82) 100%)}
        .hot-card-info{position:absolute;bottom:0;left:0;right:0;padding:1rem;color:#fff;z-index:2}
        .hot-card-rank{font-size:2rem;font-weight:900;line-height:1;opacity:0.7;margin-bottom:0.15rem}
        .hot-card-label{font-size:0.85rem;font-weight:600;line-height:1.3}

        /* Stats */
        .stats-row{display:grid;grid-template-columns:repeat(2,1fr);gap:1.25rem}
        @media(min-width:768px){.stats-row{grid-template-columns:repeat(4,1fr);gap:2rem}}
        .stat-card{text-align:center;padding:1.5rem;background:#fff;border-radius:var(--radius-xl);border:1px solid var(--color-border-light);transition:all var(--transition-smooth)}
        .stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
        .stat-icon{font-size:1.5rem;margin-bottom:0.5rem}
        .stat-value{font-size:2rem;font-weight:900;color:var(--color-primary-dark);letter-spacing:-0.03em}
        .stat-desc{font-size:0.85rem;color:var(--color-text-muted);margin-top:0.2rem}

        /* FAQ */
        .faq-list{display:flex;flex-direction:column;gap:0.75rem;max-width:800px;margin:0 auto}
        .faq-item{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--color-border-light);overflow:hidden;transition:all var(--transition-fast)}
        .faq-item:hover{border-color:var(--color-primary-light)}
        .faq-question{padding:1.1rem 1.5rem;font-weight:600;font-size:1rem;color:var(--color-text);cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:1rem;user-select:none}
        .faq-question i{color:var(--color-text-muted);font-size:0.8rem;transition:transform var(--transition-smooth)}
        .faq-answer{padding:0 1.5rem 1.1rem;font-size:0.92rem;color:var(--color-text-soft);line-height:1.7;display:none}
        .faq-item.open .faq-answer{display:block}
        .faq-item.open .faq-question i{transform:rotate(180deg);color:var(--color-primary)}
        .faq-item.open{border-color:var(--color-primary-light);box-shadow:var(--shadow-sm)}

        /* CTA */
        .cta-section{background:linear-gradient(135deg,#1e3a8a,#581c87);border-radius:var(--radius-3xl);padding:2.5rem 1.5rem;text-align:center;color:#fff;position:relative;overflow:hidden;margin:0 1rem}
        @media(min-width:768px){.cta-section{padding:3.5rem 2.5rem;margin:0}}
        .cta-section::before{content:'';position:absolute;top:-30%;right:-15%;width:350px;height:350px;background:radial-gradient(circle,rgba(255,255,255,0.08) 0%,transparent 70%);border-radius:50%;pointer-events:none}
        .cta-section::after{content:'';position:absolute;bottom:-25%;left:-10%;width:300px;height:300px;background:radial-gradient(circle,rgba(255,255,255,0.06) 0%,transparent 70%);border-radius:50%;pointer-events:none}
        .cta-inner{position:relative;z-index:2}
        .cta-title{font-size:1.6rem;font-weight:800;margin-bottom:0.75rem;letter-spacing:-0.02em}
        @media(min-width:768px){.cta-title{font-size:2rem}}
        .cta-desc{font-size:1rem;opacity:0.88;margin-bottom:1.5rem;max-width:500px;margin-left:auto;margin-right:auto;line-height:1.7}
        .btn-light{display:inline-flex;align-items:center;gap:0.5rem;padding:0.85rem 2rem;border-radius:var(--radius-lg);font-weight:700;font-size:1rem;cursor:pointer;border:none;background:#fff;color:var(--color-primary-dark);transition:all var(--transition-smooth);box-shadow:0 4px 20px rgba(0,0,0,0.2)}
        .btn-light:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(0,0,0,0.3);background:#fefefe}

        /* Footer */
        .site-footer{background:var(--color-bg-dark);color:#cbd5e1;padding:3rem 0 2rem;margin-top:1rem}
        .footer-grid{display:grid;grid-template-columns:1fr;gap:2rem}
        @media(min-width:768px){.footer-grid{grid-template-columns:2fr 1fr 1fr;gap:3rem}}
        .footer-brand{display:flex;flex-direction:column;gap:0.75rem}
        .footer-logo{font-weight:800;font-size:1.25rem;color:#fff;letter-spacing:-0.02em}
        .footer-desc{font-size:0.88rem;line-height:1.7;opacity:0.75;max-width:320px}
        .footer-col h4{font-weight:700;font-size:0.9rem;color:#fff;margin-bottom:0.75rem;letter-spacing:0.03em;text-transform:uppercase}
        .footer-col ul{list-style:none;display:flex;flex-direction:column;gap:0.5rem}
        .footer-col a{font-size:0.88rem;color:#94a3b8;transition:color var(--transition-fast)}
        .footer-col a:hover{color:#fff}
        .footer-bottom{padding-top:2rem;margin-top:2rem;border-top:1px solid rgba(255,255,255,0.1);display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;align-items:center;font-size:0.82rem;color:#64748b}

        /* BG Section */
        .bg-alt{background:var(--color-bg-alt)}
        .bg-dark-section{background:var(--color-bg-dark);color:#e2e8f0}
        .bg-dark-section .section-title{color:#fff}
        .bg-dark-section .section-subtitle{color:#94a3b8}

        /* Responsive tweaks */
        @media(max-width:519px){
            .hero-title{font-size:1.75rem}
            .hero-stats{gap:0.8rem}
            .hero-stat .stat-number{font-size:1.3rem}
            .news-item{flex-wrap:wrap;gap:0.4rem}
            .news-item-date{min-width:auto;font-size:0.75rem}
            .news-item-title{width:100%;font-size:0.88rem}
            .hot-grid{grid-template-columns:repeat(2,1fr)}
            .cards-grid{grid-template-columns:1fr}
        }

/* roulang page: category1 */
:root {
            --primary: #1a56db;
            --primary-dark: #143fa8;
            --primary-light: #e8effd;
            --accent: #f04e30;
            --accent-light: #fef2f0;
            --bg: #f7f8fa;
            --surface: #ffffff;
            --text: #1a1d28;
            --text-secondary: #5a5f72;
            --text-muted: #9095a8;
            --border: #e2e5ee;
            --border-light: #eff1f6;
            --shadow-sm: 0 1px 3px rgba(26, 29, 40, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 29, 40, 0.10);
            --shadow-lg: 0 12px 32px rgba(26, 29, 40, 0.12);
            --shadow-xl: 0 20px 48px rgba(26, 29, 40, 0.16);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, sans-serif;
            --max-width: 1260px;
            --nav-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-color: var(--bg);
            min-height: 100vh;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }

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

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

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 18px;
            }
        }

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 6px;
            align-items: center;
        }

        .nav-links li a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            border-radius: 24px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

        .nav-links li a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-links li a.active,
        .nav-links li a[aria-current="page"] {
            color: #fff;
            background: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 10px rgba(26, 86, 219, 0.3);
        }

        .nav-links li a.active:hover,
        .nav-links li a[aria-current="page"]:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        .nav-badge {
            display: inline-block;
            font-size: 0.7rem;
            padding: 2px 8px;
            border-radius: 10px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            line-height: 1.4;
            animation: pulse-badge 2.2s ease-in-out infinite;
        }

        @keyframes pulse-badge {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.08);
            }
        }

        .nav-links li a.active .nav-badge,
        .nav-links li a[aria-current="page"] .nav-badge {
            background: #fff;
            color: var(--accent);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
            flex-direction: column;
            gap: 5px;
            width: 38px;
            height: 32px;
            justify-content: center;
        }

        .mobile-menu-btn span {
            display: block;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
            width: 100%;
        }

        .mobile-menu-btn.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .mobile-menu-btn.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .mobile-menu-btn.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: #fff;
                flex-direction: column;
                padding: 90px 28px 40px;
                gap: 4px;
                box-shadow: var(--shadow-xl);
                transition: right var(--transition);
                z-index: 999;
                align-items: stretch;
            }
            .nav-links.open {
                right: 0;
            }
            .nav-links li a {
                padding: 14px 18px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
                justify-content: flex-start;
                width: 100%;
            }
            .nav-overlay {
                display: none;
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.45);
                z-index: 998;
            }
            .nav-overlay.show {
                display: block;
            }
        }

        /* ========== CATEGORY HERO ========== */
        .category-hero {
            position: relative;
            padding: 60px 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
            z-index: 0;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 29, 40, 0.82) 0%, rgba(26, 56, 219, 0.78) 100%);
            z-index: 1;
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: #fff;
            font-weight: 600;
        }

        .category-hero-content h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.03em;
            margin-bottom: 14px;
            line-height: 1.25;
        }

        .category-hero-content .hero-sub {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            line-height: 1.6;
            margin-bottom: 24px;
        }

        .hero-stats-row {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }

        .hero-stat {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            background: rgba(255, 255, 255, 0.14);
            padding: 10px 18px;
            border-radius: 24px;
            backdrop-filter: blur(6px);
        }

        .hero-stat .stat-num {
            font-size: 1.4rem;
            font-weight: 800;
            color: #ffd966;
        }

        @media (max-width: 768px) {
            .category-hero {
                padding: 40px 0;
            }
            .category-hero-content h1 {
                font-size: 1.8rem;
            }
            .category-hero-content .hero-sub {
                font-size: 0.95rem;
            }
            .hero-stats-row {
                gap: 12px;
            }
            .hero-stat {
                font-size: 0.82rem;
                padding: 8px 14px;
            }
            .hero-stat .stat-num {
                font-size: 1.15rem;
            }
        }

        /* ========== UPDATE TICKER ========== */
        .update-ticker {
            background: var(--surface);
            border-bottom: 1px solid var(--border-light);
            padding: 12px 0;
        }

        .update-ticker .container {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .ticker-label {
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 0.78rem;
            padding: 5px 12px;
            border-radius: 14px;
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.02em;
        }

        .ticker-text {
            font-size: 0.9rem;
            color: var(--text-secondary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .ticker-text strong {
            color: var(--primary);
        }

        @media (max-width: 520px) {
            .update-ticker .container {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .ticker-text {
                white-space: normal;
            }
        }

        /* ========== TAG FILTER BAR ========== */
        .tag-filter-section {
            padding: 32px 0 8px;
        }

        .tag-filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }

        .tag-filter-bar .tag-label {
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--text);
            margin-right: 4px;
            flex-shrink: 0;
        }

        .tag-filter-btn {
            padding: 8px 18px;
            border-radius: 22px;
            font-size: 0.88rem;
            font-weight: 500;
            border: 1.5px solid var(--border);
            background: var(--surface);
            color: var(--text-secondary);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .tag-filter-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .tag-filter-btn.active-tag {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 10px rgba(26, 86, 219, 0.28);
        }

        @media (max-width: 520px) {
            .tag-filter-bar {
                gap: 7px;
            }
            .tag-filter-btn {
                padding: 7px 14px;
                font-size: 0.8rem;
                border-radius: 18px;
            }
        }

        /* ========== CONTENT GRID ========== */
        .content-grid-section {
            padding: 28px 0 50px;
        }

        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .section-header h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section-header h2 .header-icon {
            width: 32px;
            height: 32px;
            background: var(--primary-light);
            border-radius: var(--radius-sm);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
        }

        .section-header .view-all {
            font-size: 0.9rem;
            color: var(--primary);
            font-weight: 600;
            transition: color var(--transition);
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .section-header .view-all:hover {
            color: var(--primary-dark);
        }

        .content-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .content-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
            cursor: pointer;
        }

        .content-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--border);
        }

        .content-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: #eef1f8;
        }

        .content-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .content-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }

        .card-img-wrap .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 12px;
            letter-spacing: 0.03em;
            z-index: 2;
        }

        .card-img-wrap .card-badge-new {
            position: absolute;
            top: 12px;
            right: 12px;
            background: #10b981;
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 12px;
            z-index: 2;
            animation: pulse-badge 2.2s ease-in-out infinite;
        }

        .content-card .card-body {
            padding: 18px 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .card-body .card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .card-body h3 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-body h3 a {
            color: var(--text);
            transition: color var(--transition);
        }
        .card-body h3 a:hover {
            color: var(--primary);
        }

        .card-body .card-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.55;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-body .card-footer-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            padding-top: 8px;
            border-top: 1px solid var(--border-light);
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .card-footer-row .read-more {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.82rem;
            transition: color var(--transition);
            display: flex;
            align-items: center;
            gap: 3px;
        }
        .card-footer-row .read-more:hover {
            color: var(--primary-dark);
        }

        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 600px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 1.25rem;
            }
            .content-card .card-body {
                padding: 14px 16px 18px;
            }
            .card-body h3 {
                font-size: 0.98rem;
            }
        }

        /* ========== HOT RANKING SIDEBAR ========== */
        .ranking-section {
            padding: 10px 0 50px;
        }

        .ranking-grid {
            display: grid;
            grid-template-columns: 1fr 380px;
            gap: 28px;
            align-items: start;
        }

        .ranking-main-col .content-grid {
            grid-template-columns: repeat(2, 1fr);
        }

        .ranking-sidebar {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            position: sticky;
            top: calc(var(--nav-height) + 24px);
        }

        .ranking-sidebar h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .ranking-sidebar h3 .rank-icon {
            font-size: 1.3rem;
        }

        .rank-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .rank-list li {
            counter-increment: rank-counter;
        }

        .rank-list li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 11px 12px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .rank-list li a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .rank-num {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.82rem;
            flex-shrink: 0;
            background: #eef1f8;
            color: var(--text-muted);
        }

        .rank-list li:nth-child(1) .rank-num {
            background: #f04e30;
            color: #fff;
        }
        .rank-list li:nth-child(2) .rank-num {
            background: #f59e0b;
            color: #fff;
        }
        .rank-list li:nth-child(3) .rank-num {
            background: #6366f1;
            color: #fff;
        }

        .rank-list li .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-list li .rank-title {
            display: block;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            font-weight: 500;
        }
        .rank-list li .rank-views {
            font-size: 0.75rem;
            color: var(--text-muted);
            display: block;
            margin-top: 1px;
        }

        @media (max-width: 1024px) {
            .ranking-grid {
                grid-template-columns: 1fr;
            }
            .ranking-sidebar {
                position: static;
                order: -1;
            }
            .ranking-main-col .content-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 600px) {
            .ranking-main-col .content-grid {
                grid-template-columns: 1fr;
            }
            .ranking-sidebar {
                padding: 16px;
            }
        }

        /* ========== HORIZONTAL SCROLL CARDS ========== */
        .scroll-cards-section {
            padding: 10px 0 50px;
            overflow: hidden;
        }

        .scroll-cards-wrapper {
            display: flex;
            gap: 18px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            padding-bottom: 8px;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
        }

        .scroll-cards-wrapper::-webkit-scrollbar {
            height: 6px;
        }
        .scroll-cards-wrapper::-webkit-scrollbar-track {
            background: transparent;
        }
        .scroll-cards-wrapper::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 3px;
        }

        .scroll-card {
            flex: 0 0 300px;
            scroll-snap-align: start;
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            cursor: pointer;
            min-height: 200px;
            display: flex;
            flex-direction: column;
        }

        .scroll-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .scroll-card .scroll-card-img {
            aspect-ratio: 2 / 1;
            overflow: hidden;
            background: #eef1f8;
        }
        .scroll-card .scroll-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .scroll-card:hover .scroll-card-img img {
            transform: scale(1.05);
        }

        .scroll-card .scroll-card-body {
            padding: 14px 16px 18px;
            flex: 1;
        }

        .scroll-card .scroll-card-body h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .scroll-card .scroll-card-body p {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.45;
        }

        @media (max-width: 768px) {
            .scroll-card {
                flex: 0 0 250px;
            }
        }
        @media (max-width: 520px) {
            .scroll-card {
                flex: 0 0 220px;
            }
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 40px 0 50px;
            background: var(--surface);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .faq-section .section-header {
            text-align: center;
            margin-bottom: 32px;
        }
        .faq-section .section-header h2 {
            justify-content: center;
            font-size: 1.6rem;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item summary {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
            transition: background var(--transition);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:hover {
            background: var(--primary-light);
        }

        .faq-item summary .faq-arrow {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
            flex-shrink: 0;
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .faq-item[open] summary {
            background: var(--primary-light);
            color: var(--primary);
        }
        .faq-item[open] summary .faq-arrow {
            background: var(--primary);
            color: #fff;
            transform: rotate(180deg);
        }

        .faq-item .faq-answer {
            padding: 0 22px 20px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        @media (max-width: 600px) {
            .faq-item summary {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-item .faq-answer {
                padding: 0 16px 16px;
                font-size: 0.84rem;
            }
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 50px 0 56px;
        }

        .cta-block {
            background: linear-gradient(135deg, #1a56db 0%, #143fa8 100%);
            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;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            pointer-events: none;
        }
        .cta-block::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            pointer-events: none;
        }

        .cta-block h2 {
            font-size: 1.75rem;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
            letter-spacing: -0.02em;
        }

        .cta-block p {
            font-size: 1rem;
            opacity: 0.9;
            margin-bottom: 28px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 1;
        }

        .cta-btn-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .btn-cta-primary {
            padding: 14px 32px;
            border-radius: 28px;
            font-weight: 700;
            font-size: 1rem;
            background: #fff;
            color: var(--primary);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-cta-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
        }

        .btn-cta-outline {
            padding: 14px 32px;
            border-radius: 28px;
            font-weight: 600;
            font-size: 1rem;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.55);
            cursor: pointer;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-cta-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

        @media (max-width: 600px) {
            .cta-block {
                padding: 32px 20px;
            }
            .cta-block h2 {
                font-size: 1.35rem;
            }
            .btn-cta-primary,
            .btn-cta-outline {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1a1d28;
            color: #c4c7d1;
            padding: 48px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-desc {
            font-size: 0.88rem;
            line-height: 1.6;
            color: #9aa0b4;
            max-width: 320px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.01em;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            color: #9aa0b4;
            font-size: 0.88rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            padding: 18px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: #6b7085;
            flex-wrap: wrap;
            gap: 8px;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-desc {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ========== UTILITY ========== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

        @media (max-width: 768px) {
            body.menu-open {
                overflow: hidden;
            }
        }

/* roulang page: article */
:root {
            --primary: #1e40af;
            --primary-light: #3b82f6;
            --primary-lighter: #60a5fa;
            --primary-dark: #1e3a8a;
            --primary-bg: #eff6ff;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --accent-bg: #fffbeb;
            --bg: #f8fafc;
            --bg-alt: #f1f5f9;
            --surface: #ffffff;
            --text: #1e293b;
            --text-secondary: #64748b;
            --text-muted: #94a3b8;
            --text-light: #cbd5e1;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --border-medium: #cbd5e1;
            --radius-xs: 6px;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-2xl: 24px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --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 1px 4px rgba(0,0,0,0.05);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.09), 0 2px 8px rgba(0,0,0,0.05);
            --shadow-lg: 0 12px 36px rgba(0,0,0,0.11), 0 4px 12px rgba(0,0,0,0.06);
            --shadow-xl: 0 20px 50px rgba(0,0,0,0.14);
            --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
            --font-mono: 'SF Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
            --container-narrow: 820px;
            --header-height: 72px;
            --reading-width: 720px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        button, input, textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        ul, ol {
            list-style: none;
        }

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

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

        /* ========== HEADER & NAVIGATION ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

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

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--primary);
            letter-spacing: -0.02em;
            flex-shrink: 0;
            z-index: 1001;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.15rem;
            font-weight: 900;
            flex-shrink: 0;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-links > li {
            position: relative;
        }

        .nav-links > li > a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            border-radius: var(--radius);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
        }

        .nav-links > li > a:hover {
            color: var(--primary);
            background: var(--primary-bg);
        }

        .nav-links > li > a.active {
            color: var(--primary);
            background: var(--primary-bg);
            font-weight: 600;
        }

        .nav-badge {
            display: inline-flex;
            align-items: center;
            padding: 3px 8px;
            border-radius: 20px;
            font-size: 0.7rem;
            font-weight: 700;
            background: linear-gradient(135deg, #ef4444, #dc2626);
            color: #fff;
            letter-spacing: 0.02em;
            line-height: 1;
        }

        .nav-cta {
            margin-left: 8px;
            padding: 10px 22px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
        }

        .nav-cta:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }

        /* Mega Menu Panel */
        .mega-trigger {
            position: relative;
        }

        .mega-panel {
            position: absolute;
            top: calc(100% + 12px);
            right: -20px;
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            border: 1px solid var(--border);
            padding: 24px;
            min-width: 520px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-8px);
            transition: all var(--transition-slow);
            pointer-events: none;
            z-index: 999;
        }

        .mega-trigger:hover .mega-panel,
        .mega-trigger:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
            pointer-events: auto;
        }

        .mega-col h4 {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--text-muted);
            margin-bottom: 12px;
            font-weight: 600;
        }

        .mega-col ul li {
            margin-bottom: 6px;
        }

        .mega-col ul li a {
            display: block;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }

        .mega-col ul li a:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }

        .mega-card {
            background: var(--bg-alt);
            border-radius: var(--radius);
            padding: 18px;
            display: flex;
            align-items: center;
            gap: 14px;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .mega-card:hover {
            background: var(--primary-bg);
            box-shadow: var(--shadow-sm);
        }

        .mega-card-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .mega-card-info {
            font-size: 0.85rem;
        }

        .mega-card-info strong {
            display: block;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 2px;
        }

        .mega-card-info span {
            color: var(--text-muted);
            font-size: 0.78rem;
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--text);
            background: var(--bg-alt);
            cursor: pointer;
            z-index: 1001;
            transition: all var(--transition-fast);
        }

        .menu-toggle:hover {
            background: var(--border);
        }

        /* Mobile overlay */
        .nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.4);
            z-index: 998;
        }

        .nav-overlay.active {
            display: block;
        }

        /* ========== ARTICLE HERO ========== */
        .article-hero {
            background: linear-gradient(180deg, var(--primary-bg) 0%, var(--bg) 100%);
            padding: 48px 0 36px;
            border-bottom: 1px solid var(--border-light);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb .sep {
            color: var(--text-muted);
            font-size: 0.7rem;
        }

        .breadcrumb .current {
            color: var(--text);
            font-weight: 500;
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-hero-content {
            display: flex;
            gap: 32px;
            align-items: flex-start;
        }

        .article-hero-text {
            flex: 1;
            min-width: 0;
        }

        .article-category-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            background: var(--primary);
            color: #fff;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .article-hero h1 {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            letter-spacing: -0.03em;
            margin-bottom: 16px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .article-meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta-item i {
            color: var(--primary-light);
            font-size: 0.85rem;
        }

        .article-hero-image {
            flex-shrink: 0;
            width: 280px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            align-self: center;
        }

        .article-hero-image img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        /* Reading progress bar */
        .reading-progress {
            position: fixed;
            top: var(--header-height);
            left: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light), var(--accent));
            z-index: 999;
            transition: width 0.1s linear;
            border-radius: 0 2px 2px 0;
        }

        /* ========== ARTICLE BODY ========== */
        .article-body-section {
            padding: 48px 0;
        }

        .article-layout {
            display: flex;
            gap: 48px;
            align-items: flex-start;
        }

        .article-main {
            flex: 1;
            min-width: 0;
            max-width: var(--reading-width);
        }

        .content-body {
            font-size: 1.08rem;
            line-height: 1.85;
            color: var(--text);
        }

        .content-body p {
            margin-bottom: 1.5em;
        }

        .content-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 2em 0 0.8em;
            color: var(--text);
            letter-spacing: -0.02em;
            padding-top: 0.3em;
            border-top: 1px solid var(--border-light);
        }

        .content-body h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin: 1.6em 0 0.6em;
            color: var(--text);
        }

        .content-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 1.4em 0 0.5em;
            color: var(--text-secondary);
        }

        .content-body ul, .content-body ol {
            margin: 1em 0 1.5em;
            padding-left: 1.6em;
        }

        .content-body ul {
            list-style: disc;
        }

        .content-body ol {
            list-style: decimal;
        }

        .content-body li {
            margin-bottom: 0.5em;
            padding-left: 0.3em;
        }

        .content-body blockquote {
            margin: 1.5em 0;
            padding: 18px 24px;
            background: var(--primary-bg);
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        .content-body blockquote p {
            margin-bottom: 0;
        }

        .content-body code {
            background: var(--bg-alt);
            padding: 2px 7px;
            border-radius: 4px;
            font-family: var(--font-mono);
            font-size: 0.9em;
            color: #e11d48;
            border: 1px solid var(--border-light);
        }

        .content-body pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: 20px 24px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 1.5em 0;
            font-family: var(--font-mono);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .content-body pre code {
            background: none;
            padding: 0;
            color: inherit;
            border: none;
            font-size: inherit;
        }

        .content-body img {
            border-radius: var(--radius);
            margin: 1.5em auto;
            max-width: 100%;
            box-shadow: var(--shadow-sm);
        }

        .content-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition-fast);
        }

        .content-body a:hover {
            color: var(--primary-dark);
        }

        .content-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            font-size: 0.95rem;
        }

        .content-body th, .content-body td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }

        .content-body th {
            background: var(--bg-alt);
            font-weight: 600;
            color: var(--text);
        }

        .content-body strong {
            font-weight: 700;
            color: var(--text);
        }

        /* Article sidebar */
        .article-sidebar {
            flex-shrink: 0;
            width: 300px;
            position: sticky;
            top: calc(var(--header-height) + 24px);
        }

        .sidebar-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 22px;
            margin-bottom: 20px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
        }

        .sidebar-card h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h4 i {
            color: var(--primary-light);
        }

        .sidebar-article-list li {
            margin-bottom: 10px;
        }

        .sidebar-article-list li a {
            display: block;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            line-height: 1.4;
        }

        .sidebar-article-list li a:hover {
            background: var(--bg-alt);
            color: var(--primary);
            border-color: var(--border);
        }

        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .sidebar-tag {
            padding: 6px 12px;
            background: var(--bg-alt);
            border-radius: 20px;
            font-size: 0.78rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            cursor: pointer;
            border: 1px solid transparent;
        }

        .sidebar-tag:hover {
            background: var(--primary-bg);
            color: var(--primary);
            border-color: var(--primary-lighter);
        }

        .sidebar-cta-card {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: center;
            box-shadow: var(--shadow-md);
        }

        .sidebar-cta-card h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 8px;
        }

        .sidebar-cta-card p {
            font-size: 0.85rem;
            opacity: 0.9;
            margin-bottom: 16px;
            line-height: 1.5;
        }

        .sidebar-cta-btn {
            display: inline-block;
            padding: 10px 22px;
            background: #fff;
            color: var(--primary);
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
        }

        .sidebar-cta-btn:hover {
            background: var(--accent-light);
            color: #1e293b;
            transform: translateY(-1px);
            box-shadow: var(--shadow);
        }

        /* ========== ARTICLE TAGS & SHARE ========== */
        .article-tags-section {
            border-top: 1px solid var(--border);
            padding-top: 28px;
            margin-top: 40px;
        }

        .article-tags-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }

        .article-tags-row span.label {
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--text);
            margin-right: 4px;
        }

        .tag-pill {
            padding: 7px 15px;
            background: var(--bg-alt);
            border-radius: 20px;
            font-size: 0.82rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            cursor: pointer;
            border: 1px solid transparent;
        }

        .tag-pill:hover {
            background: var(--primary-bg);
            color: var(--primary);
            border-color: var(--primary-lighter);
        }

        .share-row {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 16px;
            flex-wrap: wrap;
        }

        .share-row span.label {
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--text);
        }

        .share-btn {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            cursor: pointer;
            background: var(--bg-alt);
            color: var(--text-secondary);
        }

        .share-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }

        /* ========== RELATED POSTS ========== */
        .related-section {
            padding: 48px 0 60px;
            background: var(--surface);
            border-top: 1px solid var(--border-light);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: var(--accent-bg);
            color: #b45309;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .related-section h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 32px;
            letter-spacing: -0.03em;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            background: var(--bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            cursor: pointer;
        }

        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--border-medium);
        }

        .related-card-image {
            height: 170px;
            overflow: hidden;
        }

        .related-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .related-card:hover .related-card-image img {
            transform: scale(1.05);
        }

        .related-card-body {
            padding: 18px;
        }

        .related-card-body .card-cat {
            font-size: 0.75rem;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 6px;
            letter-spacing: 0.03em;
        }

        .related-card-body h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-body .card-date {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* ========== NOT FOUND STATE ========== */
        .not-found-section {
            padding: 80px 0 100px;
            text-align: center;
        }

        .not-found-icon {
            width: 100px;
            height: 100px;
            margin: 0 auto 28px;
            background: var(--bg-alt);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.5rem;
            color: var(--text-muted);
        }

        .not-found-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
        }

        .not-found-section p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 1.05rem;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius);
            font-weight: 600;
            transition: all var(--transition-fast);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow);
            transform: translateY(-1px);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(180deg, var(--bg) 0%, var(--surface) 100%);
        }

        .cta-card {
            background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 40%, #3b82f6 100%);
            border-radius: var(--radius-2xl);
            padding: 48px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(255,255,255,0.05);
            border-radius: 50%;
        }

        .cta-card::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            background: rgba(255,255,255,0.04);
            border-radius: 50%;
        }

        .cta-card > * {
            position: relative;
            z-index: 1;
        }

        .cta-card h2 {
            font-size: 1.9rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.03em;
        }

        .cta-card p {
            font-size: 1.08rem;
            opacity: 0.9;
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }

        .btn-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: #fff;
            color: var(--primary);
            border-radius: var(--radius);
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-fast);
        }

        .btn-light:hover {
            background: var(--accent-light);
            color: #1e293b;
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.2);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 48px 0 24px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-logo {
            font-size: 1.25rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -0.02em;
        }

        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.6;
            color: #94a3b8;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: #e2e8f0;
            margin-bottom: 14px;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 0.9rem;
            color: #94a3b8;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.82rem;
            color: #64748b;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .article-hero-content {
                flex-direction: column-reverse;
            }
            .article-hero-image {
                width: 100%;
                max-width: 400px;
                margin: 0 auto;
            }
            .article-hero-image img {
                height: 220px;
            }
            .article-layout {
                flex-direction: column;
            }
            .article-sidebar {
                width: 100%;
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .article-sidebar .sidebar-card:last-child {
                grid-column: 1 / -1;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-hero h1 {
                font-size: 1.7rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .mega-panel {
                min-width: 400px;
                right: -60px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .container {
                padding: 0 16px;
            }
            .container-narrow {
                padding: 0 16px;
            }
            .nav-wrapper {
                position: fixed;
                top: 0;
                right: -320px;
                width: 300px;
                height: 100vh;
                background: var(--surface);
                flex-direction: column;
                align-items: stretch;
                padding: 80px 20px 30px;
                gap: 0;
                z-index: 1000;
                transition: right var(--transition-slow);
                box-shadow: var(--shadow-xl);
                overflow-y: auto;
            }
            .nav-wrapper.open {
                right: 0;
            }
            .nav-links {
                flex-direction: column;
                gap: 2px;
            }
            .nav-links > li > a {
                padding: 14px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 12px;
                text-align: center;
                display: block;
            }
            .menu-toggle {
                display: flex;
            }
            .mega-panel {
                position: static;
                min-width: unset;
                box-shadow: none;
                border: none;
                padding: 12px 0;
                grid-template-columns: 1fr;
                gap: 10px;
                opacity: 1;
                visibility: visible;
                transform: none;
                pointer-events: auto;
                display: none;
                background: transparent;
            }
            .mega-trigger.open-mega .mega-panel {
                display: grid;
            }
            .article-hero {
                padding: 32px 0 24px;
            }
            .article-hero h1 {
                font-size: 1.45rem;
            }
            .article-hero-image {
                max-width: 100%;
            }
            .article-hero-image img {
                height: 180px;
            }
            .article-body-section {
                padding: 32px 0;
            }
            .content-body {
                font-size: 1rem;
            }
            .content-body h2 {
                font-size: 1.3rem;
            }
            .content-body h3 {
                font-size: 1.1rem;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .related-section h2 {
                font-size: 1.4rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .related-card-image {
                height: 180px;
            }
            .cta-card {
                padding: 32px 20px;
            }
            .cta-card h2 {
                font-size: 1.4rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .sidebar-cta-card {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 1.25rem;
            }
            .article-meta {
                gap: 10px;
                font-size: 0.8rem;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
            .article-hero-image img {
                height: 150px;
            }
            .content-body {
                font-size: 0.95rem;
                line-height: 1.75;
            }
            .content-body h2 {
                font-size: 1.15rem;
            }
            .related-card-image {
                height: 150px;
            }
            .cta-card h2 {
                font-size: 1.2rem;
            }
            .cta-card p {
                font-size: 0.9rem;
            }
            .btn-light {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .nav-wrapper {
                width: 280px;
                right: -300px;
            }
            .tag-pill {
                font-size: 0.75rem;
                padding: 5px 10px;
            }
        }

        /* Utility: screen-reader only */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            white-space: nowrap;
            border: 0;
        }