/* roulang page: index */
:root {
            --primary: #e8a817;
            --primary-dark: #c48f14;
            --primary-light: #f5c542;
            --primary-glow: rgba(232,168,23,0.35);
            --secondary: #ff6b35;
            --secondary-dark: #e55a28;
            --accent: #00d4aa;
            --bg-deep: #08090f;
            --bg-dark: #0d1117;
            --bg-card: #161b22;
            --bg-card-hover: #1c2130;
            --bg-elevated: #1a1f2b;
            --bg-nav: rgba(10,11,18,0.92);
            --surface: #202530;
            --border: #2a2d38;
            --border-light: #353945;
            --text-primary: #e8e9ed;
            --text-secondary: #b0b3bd;
            --text-muted: #7a7d87;
            --text-gold: #e8a817;
            --text-white: #f5f5f7;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
            --shadow-glow: 0 0 40px rgba(232,168,23,0.25);
            --shadow-card: 0 2px 12px rgba(0,0,0,0.35);
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
            --container: 1200px;
            --container-sm: 960px;
            --nav-height: 68px;
            --section-gap: 80px;
            --section-gap-mobile: 50px;
        }

        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px}
        body{font-family:var(--font-sans);background:var(--bg-deep);color:var(--text-primary);line-height:1.65;min-height:100vh;overflow-x:hidden}
        img{max-width:100%;height:auto;display:block}
        a{text-decoration:none;color:inherit;transition:color var(--transition-fast)}
        button,input,select,textarea{font-family:inherit;font-size:inherit;border:none;outline:none;background:none}
        ul,ol{list-style:none}
        h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:var(--text-white)}
        h1{font-size:2.8rem;letter-spacing:-0.02em}
        h2{font-size:2rem;letter-spacing:-0.01em}
        h3{font-size:1.35rem}
        h4{font-size:1.1rem}
        p{margin-bottom:1rem}
        p:last-child{margin-bottom:0}
        ::selection{background:var(--primary);color:#000}

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

        /* ========== NAVIGATION ========== */
        .site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:var(--bg-nav);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,0.06);height:var(--nav-height);transition:background var(--transition-base),box-shadow var(--transition-base)}
        .site-header.scrolled{background:rgba(8,9,15,0.96);box-shadow:0 4px 24px rgba(0,0,0,0.5)}
        .header-inner{display:flex;align-items:center;justify-content:space-between;height:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
        .logo-link{display:flex;align-items:center;gap:10px;font-size:1.45rem;font-weight:800;color:var(--text-white);letter-spacing:-0.01em;white-space:nowrap;z-index:1001}
        .logo-icon{width:40px;height:40px;border-radius:var(--radius-md);background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;font-size:1.1rem;font-weight:900;color:#000;flex-shrink:0}
        .logo-text{background:linear-gradient(135deg,var(--primary-light),var(--primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
        .nav-links{display:flex;align-items:center;gap:6px}
        .nav-link{display:inline-flex;align-items:center;padding:8px 18px;border-radius:var(--radius-full);font-size:0.95rem;font-weight:600;color:var(--text-secondary);transition:all var(--transition-fast);position:relative;white-space:nowrap}
        .nav-link:hover{color:var(--text-white);background:rgba(255,255,255,0.04)}
        .nav-link.active{color:var(--primary);background:rgba(232,168,23,0.1)}
        .nav-link.active::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:20px;height:2px;border-radius:2px;background:var(--primary)}
        .nav-cta-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 22px;border-radius:var(--radius-full);font-size:0.9rem;font-weight:700;color:#000;background:linear-gradient(135deg,var(--primary),var(--secondary));cursor:pointer;transition:all var(--transition-base);white-space:nowrap;box-shadow:0 4px 16px rgba(232,168,23,0.3)}
        .nav-cta-btn:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(255,107,53,0.4);filter:brightness(1.08)}
        .nav-cta-btn:active{transform:translateY(0)}
        .mobile-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;z-index:1001;padding:8px;background:none;border:none}
        .mobile-toggle span{display:block;width:26px;height:2.5px;border-radius:2px;background:var(--text-white);transition:all var(--transition-base)}
        .mobile-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
        .mobile-toggle.active span:nth-child(2){opacity:0}
        .mobile-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
        .mobile-menu{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(8,9,15,0.98);z-index:999;flex-direction:column;align-items:center;justify-content:center;gap:20px;padding:40px 24px}
        .mobile-menu.open{display:flex}
        .mobile-menu .nav-link{font-size:1.2rem;padding:14px 28px}
        .mobile-menu .nav-cta-btn{font-size:1.05rem;padding:14px 32px;margin-top:10px}

        /* ========== HERO ========== */
        .hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:120px 24px 80px;overflow:hidden;background:var(--bg-deep)}
        .hero-bg{position:absolute;inset:0;z-index:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;background-position:center 30%}
        .hero-bg::after{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 50% 40%,rgba(8,9,15,0.3) 0%,rgba(8,9,15,0.75) 50%,rgba(8,9,15,0.95) 100%)}
        .hero-particles{position:absolute;inset:0;z-index:1;pointer-events:none;overflow:hidden}
        .hero-particle{position:absolute;width:3px;height:3px;border-radius:50%;background:var(--primary);opacity:0.6;animation:floatUp 8s infinite ease-in}
        .hero-particle:nth-child(1){left:10%;animation-delay:0s;animation-duration:7s}
        .hero-particle:nth-child(2){left:25%;animation-delay:2s;animation-duration:9s}
        .hero-particle:nth-child(3){left:45%;animation-delay:4s;animation-duration:6.5s}
        .hero-particle:nth-child(4){left:60%;animation-delay:1s;animation-duration:8.5s}
        .hero-particle:nth-child(5){left:75%;animation-delay:3s;animation-duration:7.5s}
        .hero-particle:nth-child(6){left:88%;animation-delay:5s;animation-duration:10s}
        @keyframes floatUp{0%{transform:translateY(100vh) scale(0);opacity:0}20%{opacity:0.7}80%{opacity:0.5}100%{transform:translateY(-10vh) scale(1.5);opacity:0}}
        .hero-content{position:relative;z-index:2;text-align:center;max-width:780px;width:100%}
        .hero-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 18px;border-radius:var(--radius-full);background:rgba(232,168,23,0.12);border:1px solid rgba(232,168,23,0.25);font-size:0.88rem;font-weight:600;color:var(--primary-light);margin-bottom:28px;letter-spacing:0.02em}
        .hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:pulse-dot 2s infinite}
        @keyframes pulse-dot{0%,100%{opacity:1;box-shadow:0 0 6px var(--accent)}50%{opacity:0.4;box-shadow:0 0 2px var(--accent)}}
        .hero-title{font-size:3.5rem;font-weight:900;letter-spacing:-0.03em;line-height:1.15;margin-bottom:18px;color:var(--text-white)}
        .hero-title .highlight{background:linear-gradient(135deg,var(--primary-light),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
        .hero-subtitle{font-size:1.2rem;color:var(--text-secondary);max-width:560px;margin:0 auto 36px;line-height:1.6}
        .hero-stats{display:flex;gap:40px;justify-content:center;flex-wrap:wrap;margin-bottom:38px}
        .hero-stat{text-align:center;min-width:90px}
        .hero-stat-value{font-size:2.6rem;font-weight:900;color:var(--primary);letter-spacing:-0.02em;font-family:var(--font-mono)}
        .hero-stat-label{font-size:0.85rem;color:var(--text-muted);margin-top:2px}
        .hero-btns{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
        .btn{display:inline-flex;align-items:center;gap:8px;padding:14px 30px;border-radius:var(--radius-full);font-weight:700;font-size:1rem;cursor:pointer;transition:all var(--transition-base);white-space:nowrap;letter-spacing:0.01em}
        .btn-primary{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#000;box-shadow:0 6px 24px rgba(232,168,23,0.35)}
        .btn-primary:hover{transform:translateY(-3px);box-shadow:0 10px 36px rgba(255,107,53,0.45);filter:brightness(1.1)}
        .btn-primary:active{transform:translateY(-1px)}
        .btn-outline{background:transparent;color:var(--text-white);border:2px solid var(--border-light);box-shadow:none}
        .btn-outline:hover{background:rgba(255,255,255,0.05);border-color:var(--primary);color:var(--primary);transform:translateY(-3px);box-shadow:0 6px 20px rgba(232,168,23,0.2)}
        .btn-outline:active{transform:translateY(-1px)}
        .btn:focus-visible{outline:2px solid var(--primary);outline-offset:3px}

        /* ========== SECTIONS ========== */
        .section{padding:var(--section-gap) 0}
        .section-header{text-align:center;margin-bottom:52px}
        .section-label{display:inline-block;font-size:0.8rem;font-weight:700;text-transform:uppercase;letter-spacing:0.08em;color:var(--primary);margin-bottom:10px;padding:4px 14px;border-radius:var(--radius-full);background:rgba(232,168,23,0.08)}
        .section-title{font-size:2rem;margin-bottom:12px;color:var(--text-white)}
        .section-desc{font-size:1.05rem;color:var(--text-secondary);max-width:600px;margin:0 auto}

        /* Stats Grid */
        .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
        .stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 24px;text-align:center;transition:all var(--transition-base);position:relative;overflow:hidden}
        .stat-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--secondary));opacity:0;transition:opacity var(--transition-base)}
        .stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--border-light);background:var(--bg-card-hover)}
        .stat-card:hover::before{opacity:1}
        .stat-icon{width:48px;height:48px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:1.4rem;background:rgba(232,168,23,0.1);color:var(--primary)}
        .stat-value{font-size:2.2rem;font-weight:900;color:var(--primary);font-family:var(--font-mono);letter-spacing:-0.02em}
        .stat-label{font-size:0.9rem;color:var(--text-muted);margin-top:4px}

        /* Features */
        .features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
        .feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 28px;transition:all var(--transition-base);position:relative}
        .feature-card:hover{background:var(--bg-card-hover);border-color:var(--border-light);transform:translateY(-3px);box-shadow:var(--shadow-md)}
        .feature-icon-wrap{width:56px;height:56px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;margin-bottom:18px;font-size:1.6rem;background:linear-gradient(135deg,rgba(232,168,23,0.15),rgba(255,107,53,0.1));color:var(--primary)}
        .feature-card h3{font-size:1.2rem;margin-bottom:8px;color:var(--text-white)}
        .feature-card p{font-size:0.95rem;color:var(--text-secondary);line-height:1.6}

        /* Category Entry */
        .category-entry{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-xl);overflow:hidden;transition:all var(--transition-base)}
        .category-entry:hover{border-color:var(--border-light);box-shadow:var(--shadow-lg)}
        .category-entry-img{height:100%;min-height:320px;position:relative;overflow:hidden}
        .category-entry-img img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-slow)}
        .category-entry:hover .category-entry-img img{transform:scale(1.04)}
        .category-entry-body{padding:36px 32px;display:flex;flex-direction:column;justify-content:center}
        .category-entry-tag{display:inline-block;padding:5px 14px;border-radius:var(--radius-full);background:rgba(232,168,23,0.12);color:var(--primary);font-size:0.82rem;font-weight:700;margin-bottom:14px;width:fit-content}
        .category-entry-body h3{font-size:1.5rem;margin-bottom:10px}
        .category-entry-body p{color:var(--text-secondary);font-size:0.95rem;line-height:1.6;margin-bottom:20px}
        .category-entry-body .btn{width:fit-content}

        /* CMS List */
        .cms-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
        .cms-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--transition-base);display:flex;flex-direction:column}
        .cms-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--border-light);background:var(--bg-card-hover)}
        .cms-card-img{height:180px;position:relative;overflow:hidden;background:var(--surface)}
        .cms-card-img img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-slow)}
        .cms-card:hover .cms-card-img img{transform:scale(1.05)}
        .cms-card-body{padding:20px 22px;flex:1;display:flex;flex-direction:column}
        .cms-card-meta{display:flex;gap:12px;align-items:center;font-size:0.78rem;color:var(--text-muted);margin-bottom:8px}
        .cms-card-cat{padding:3px 10px;border-radius:var(--radius-full);background:rgba(232,168,23,0.1);color:var(--primary);font-weight:600;font-size:0.75rem}
        .cms-card-title{font-size:1.05rem;font-weight:700;color:var(--text-white);margin-bottom:6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
        .cms-card-desc{font-size:0.88rem;color:var(--text-secondary);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
        .cms-card-link{display:inline-flex;align-items:center;gap:4px;font-size:0.85rem;font-weight:700;color:var(--primary);margin-top:12px;transition:gap var(--transition-fast)}
        .cms-card-link:hover{gap:8px;color:var(--primary-light)}
        .cms-empty{text-align:center;padding:60px 20px;color:var(--text-muted);font-size:1rem;grid-column:1/-1}

        /* Steps */
        .steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
        .step-card{text-align:center;padding:30px 20px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all var(--transition-base);position:relative}
        .step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--border-light)}
        .step-num{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#000;font-weight:900;font-size:1.3rem;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
        .step-card h4{font-size:1.05rem;margin-bottom:6px;color:var(--text-white)}
        .step-card p{font-size:0.88rem;color:var(--text-secondary)}

        /* FAQ */
        .faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
        .faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--transition-base)}
        .faq-item:hover{border-color:var(--border-light)}
        .faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;padding:20px 24px;cursor:pointer;font-weight:700;font-size:1rem;color:var(--text-white);text-align:left;transition:color var(--transition-fast);gap:16px}
        .faq-question:hover{color:var(--primary)}
        .faq-icon{flex-shrink:0;width:28px;height:28px;border-radius:50%;background:rgba(232,168,23,0.12);display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:var(--primary);transition:transform var(--transition-base)}
        .faq-item.open .faq-icon{transform:rotate(45deg);background:rgba(232,168,23,0.25)}
        .faq-answer{max-height:0;overflow:hidden;transition:max-height var(--transition-slow),padding var(--transition-base)}
        .faq-item.open .faq-answer{max-height:300px}
        .faq-answer-inner{padding:0 24px 20px;font-size:0.93rem;color:var(--text-secondary);line-height:1.7}

        /* CTA */
        .cta-section{background:var(--bg-dark);position:relative;overflow:hidden}
        .cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:0.12;z-index:0}
        .cta-inner{position:relative;z-index:1;text-align:center;padding:70px 24px;max-width:680px;margin:0 auto}
        .cta-inner h2{font-size:2.2rem;margin-bottom:14px}
        .cta-inner p{font-size:1.05rem;color:var(--text-secondary);margin-bottom:28px}
        .cta-inner .btn-primary{padding:16px 38px;font-size:1.1rem}

        /* Footer */
        .site-footer{background:var(--bg-dark);border-top:1px solid var(--border);padding:48px 0 28px}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;margin-bottom:36px}
        .footer-col h4{font-size:0.9rem;text-transform:uppercase;letter-spacing:0.05em;color:var(--text-muted);margin-bottom:16px}
        .footer-col ul{display:flex;flex-direction:column;gap:8px}
        .footer-col ul li a{font-size:0.9rem;color:var(--text-secondary);transition:color var(--transition-fast)}
        .footer-col ul li a:hover{color:var(--primary)}
        .footer-brand{font-size:1.2rem;font-weight:800;color:var(--primary);margin-bottom:8px}
        .footer-brand-desc{font-size:0.88rem;color:var(--text-muted);max-width:260px;line-height:1.5}
        .footer-bottom{border-top:1px solid var(--border);padding-top:20px;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;font-size:0.82rem;color:var(--text-muted)}
        .footer-bottom a{color:var(--text-secondary)}
        .footer-bottom a:hover{color:var(--primary)}

        /* ========== RESPONSIVE ========== */
        @media (max-width:1024px){
            .stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}
            .features-grid{grid-template-columns:repeat(2,1fr);gap:18px}
            .category-entry{grid-template-columns:1fr}
            .category-entry-img{min-height:220px;max-height:280px}
            .cms-list{grid-template-columns:1fr;gap:16px}
            .steps-grid{grid-template-columns:repeat(2,1fr);gap:18px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
            h1{font-size:2.2rem}
            .hero-title{font-size:2.6rem}
            .hero-stats{gap:24px}
            .hero-stat-value{font-size:2rem}
        }
        @media (max-width:768px){
            .nav-links{display:none}
            .mobile-toggle{display:flex}
            .hero{min-height:90vh;padding:100px 20px 60px}
            .hero-title{font-size:2rem}
            .hero-subtitle{font-size:1rem}
            .hero-stats{gap:18px}
            .hero-stat-value{font-size:1.7rem}
            .hero-stat-label{font-size:0.78rem}
            .stats-grid{grid-template-columns:1fr 1fr;gap:12px}
            .stat-card{padding:20px 14px}
            .stat-value{font-size:1.6rem}
            .features-grid{grid-template-columns:1fr;gap:14px}
            .section{padding:var(--section-gap-mobile) 0}
            .section-title{font-size:1.5rem}
            .cta-inner h2{font-size:1.6rem}
            .footer-grid{grid-template-columns:1fr;gap:22px}
            .btn{padding:12px 24px;font-size:0.9rem}
            .category-entry-body{padding:24px 20px}
            .faq-question{padding:16px 18px;font-size:0.93rem}
            .cms-card-img{height:160px}
        }
        @media (max-width:520px){
            .hero-title{font-size:1.6rem}
            .hero-stats{flex-direction:column;gap:12px;align-items:center}
            .hero-stat{min-width:auto}
            .stats-grid{grid-template-columns:1fr;gap:10px}
            .steps-grid{grid-template-columns:1fr;gap:12px}
            .hero-btns{flex-direction:column;align-items:stretch;gap:10px}
            .hero-btns .btn{justify-content:center}
            .section-label{font-size:0.72rem}
            .container,.container-sm{padding:0 16px}
            .footer-bottom{flex-direction:column;text-align:center}
        }

/* roulang page: article */
:root {
            --primary: #FF5722;
            --primary-dark: #E64A19;
            --primary-light: #FF8A65;
            --primary-glow: rgba(255,87,34,0.25);
            --accent: #FFD740;
            --accent-dark: #FFC400;
            --secondary: #1A1A2E;
            --secondary-light: #25253D;
            --bg: #F5F5F7;
            --bg-white: #FFFFFF;
            --bg-card: #FFFFFF;
            --bg-dark-section: #141428;
            --text: #1D1D2C;
            --text-secondary: #5A5A6E;
            --text-light: #8E8EA0;
            --text-on-dark: #E8E8F0;
            --text-on-primary: #FFFFFF;
            --border: #E2E2EA;
            --border-light: #F0F0F5;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-glow: 0 4px 24px rgba(255,87,34,0.2);
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --transition-smooth: 0.35s cubic-bezier(0.22,0.61,0.36,1);
            --font-heading: system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-body: system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --content-width: 780px;
            --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-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        ul,ol { list-style: none; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input { font-family: inherit; }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }
        .container--narrow {
            max-width: 900px;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--secondary);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            height: var(--nav-height);
            box-shadow: 0 2px 20px rgba(0,0,0,0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 24px;
        }
        .logo a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-size: 1.45rem;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.02em;
            transition: opacity var(--transition);
        }
        .logo a:hover { opacity: 0.85; }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            border-radius: var(--radius-xs);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: #FFF;
            box-shadow: 0 0 16px var(--primary-glow);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: #C8C8D8;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover { color: #FFFFFF; background: rgba(255,255,255,0.06); }
        .nav-link.active {
            color: #FFFFFF;
            background: rgba(255,255,255,0.1);
            font-weight: 600;
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            color: #FFFFFF;
            background: var(--primary);
            box-shadow: 0 2px 14px var(--primary-glow);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-cta-btn:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 22px rgba(255,87,34,0.4);
            transform: translateY(-1px);
            color: #FFFFFF;
        }
        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-xs);
            transition: background var(--transition);
        }
        .mobile-menu-toggle:hover { background: rgba(255,255,255,0.08); }
        .mobile-menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #FFFFFF;
            border-radius: 2px;
            transition: all var(--transition);
        }
        .mobile-menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
        .mobile-menu-toggle.active span:nth-child(2) { opacity: 0; }
        .mobile-menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

        /* Article Banner */
        .article-banner {
            position: relative;
            background: linear-gradient(160deg, #1A1A2E 0%, #25253D 30%, #1E1E35 60%, #141428 100%);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 64px 0 52px;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
            border-bottom: 4px solid var(--primary);
            position: relative;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(255,87,34,0.15) 0%, transparent 60%),
                        radial-gradient(ellipse at 20% 70%, rgba(255,215,64,0.08) 0%, transparent 50%);
            pointer-events: none;
        }
        .article-banner .container { position: relative; z-index: 1; }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 16px;
            font-size: 0.875rem;
            color: rgba(255,255,255,0.6);
        }
        .breadcrumb a {
            color: rgba(255,255,255,0.75);
            transition: color var(--transition);
        }
        .breadcrumb a:hover { color: var(--accent); }
        .breadcrumb .separator { color: rgba(255,255,255,0.35); font-size: 0.7rem; }
        .breadcrumb .current { color: var(--accent); font-weight: 500; }
        .article-banner .category-tag {
            display: inline-block;
            padding: 6px 16px;
            background: var(--primary);
            color: #FFF;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 14px;
            box-shadow: 0 2px 12px rgba(255,87,34,0.35);
        }
        .article-banner h1 {
            font-family: var(--font-heading);
            font-size: clamp(1.7rem, 3.5vw, 2.5rem);
            font-weight: 800;
            color: #FFFFFF;
            line-height: 1.3;
            max-width: 800px;
            text-shadow: 0 2px 8px rgba(0,0,0,0.4);
        }
        .article-meta-row {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 16px;
            color: rgba(255,255,255,0.65);
            font-size: 0.9rem;
        }
        .article-meta-row span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta-row i { font-size: 0.85rem; color: var(--accent); }

        /* Main Layout */
        .article-main {
            flex: 1;
            padding: 48px 0 60px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 44px;
            align-items: start;
        }
        .article-content-area {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 44px 48px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            overflow: hidden;
        }
        .article-featured-image {
            border-radius: var(--radius);
            overflow: hidden;
            margin: -44px -48px 36px;
            box-shadow: 0 4px 16px rgba(0,0,0,0.06);
        }
        .article-featured-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            max-height: 440px;
        }
        .article-content {
            font-size: 1.06rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-content h2 {
            font-family: var(--font-heading);
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--text);
            margin: 36px 0 16px;
            padding-left: 16px;
            border-left: 4px solid var(--primary);
            line-height: 1.4;
        }
        .article-content h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text);
            margin: 28px 0 12px;
            line-height: 1.4;
        }
        .article-content p {
            margin-bottom: 18px;
            color: #3A3A4C;
        }
        .article-content ul, .article-content ol {
            margin: 16px 0;
            padding-left: 24px;
        }
        .article-content ul { list-style: disc; }
        .article-content ol { list-style: decimal; }
        .article-content li {
            margin-bottom: 8px;
            color: #3A3A4C;
        }
        .article-content blockquote {
            margin: 24px 0;
            padding: 20px 28px;
            background: #FFF8F5;
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: #5A4A42;
            font-size: 1rem;
        }
        .article-content img {
            border-radius: var(--radius-sm);
            margin: 20px auto;
            box-shadow: var(--shadow-sm);
        }
        .article-content a {
            color: var(--primary);
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition);
        }
        .article-content a:hover { color: var(--primary-dark); }
        .article-content code {
            background: #F4F4F8;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: #E64A19;
        }
        .article-content pre {
            background: #1A1A2E;
            color: #E8E8F0;
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin: 20px 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* Article Footer */
        .article-footer-meta {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-tag {
            padding: 6px 14px;
            background: #FFF0EB;
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 500;
            transition: all var(--transition);
        }
        .article-tag:hover { background: var(--primary); color: #FFF; }
        .share-btns {
            display: flex;
            gap: 8px;
        }
        .share-btn {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFF;
            font-size: 0.95rem;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .share-btn--weibo { background: #E6162D; }
        .share-btn--wechat { background: #07C160; }
        .share-btn--link { background: #5A5A6E; }
        .share-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); }

        /* Sidebar */
        .article-sidebar {
            position: sticky;
            top: calc(var(--nav-height) + 28px);
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }
        .sidebar-card h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i { color: var(--primary); font-size: 0.9rem; }
        .related-post-item {
            display: flex;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .related-post-item:last-child { border-bottom: none; padding-bottom: 0; }
        .related-post-item:hover { transform: translateX(4px); }
        .related-post-thumb {
            flex-shrink: 0;
            width: 72px;
            height: 56px;
            border-radius: var(--radius-xs);
            overflow: hidden;
            background: #F0F0F5;
        }
        .related-post-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .related-post-info {
            flex: 1;
            min-width: 0;
        }
        .related-post-title {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition);
        }
        .related-post-item:hover .related-post-title { color: var(--primary); }
        .related-post-date {
            font-size: 0.78rem;
            color: var(--text-light);
            margin-top: 4px;
        }

        /* Stats Mini Card */
        .stats-mini {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }
        .stat-mini-item {
            text-align: center;
            padding: 14px 10px;
            background: #FFF8F5;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }
        .stat-mini-item:hover { background: #FFF0EB; }
        .stat-mini-value {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            font-family: var(--font-heading);
        }
        .stat-mini-label {
            font-size: 0.75rem;
            color: var(--text-light);
            margin-top: 2px;
        }

        /* CTA Section */
        .section-cta {
            background: linear-gradient(150deg, #1A1A2E 0%, #25253D 40%, #1E1E35 100%);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 60px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .section-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(255,87,34,0.1) 0%, transparent 60%);
            pointer-events: none;
        }
        .section-cta .container { position: relative; z-index: 1; }
        .section-cta h2 {
            font-family: var(--font-heading);
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        .section-cta p {
            font-size: 1.05rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 28px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-btn-large {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 15px 36px;
            font-size: 1.08rem;
            font-weight: 700;
            color: #FFF;
            background: var(--primary);
            border-radius: 50px;
            box-shadow: 0 6px 28px rgba(255,87,34,0.4);
            transition: all var(--transition-smooth);
            letter-spacing: 0.03em;
        }
        .cta-btn-large:hover {
            background: var(--primary-dark);
            box-shadow: 0 8px 36px rgba(255,87,34,0.55);
            transform: translateY(-3px);
            color: #FFF;
        }

        /* Not Found State */
        .not-found-area {
            text-align: center;
            padding: 80px 28px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }
        .not-found-icon {
            font-size: 5rem;
            color: #DDD;
            margin-bottom: 20px;
        }
        .not-found-area h2 {
            font-family: var(--font-heading);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }
        .not-found-area p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 1rem;
        }
        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--primary);
            color: #FFF;
            border-radius: 50px;
            font-weight: 600;
            transition: all var(--transition);
            box-shadow: var(--shadow-glow);
        }
        .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); color: #FFF; }

        /* Footer */
        .site-footer {
            background: var(--secondary);
            color: rgba(255,255,255,0.7);
            padding: 52px 0 28px;
            border-top: 4px solid var(--primary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 10px;
        }
        .footer-brand-desc {
            font-size: 0.9rem;
            line-height: 1.6;
            color: rgba(255,255,255,0.5);
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.55);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover { color: var(--accent); }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 0.82rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); transition: color var(--transition); }
        .footer-bottom a:hover { color: var(--accent); }

        @media (max-width: 1024px) {
            .container { padding: 0 20px; }
            .article-layout {
                grid-template-columns: 1fr 280px;
                gap: 28px;
            }
            .article-content-area { padding: 32px 28px; }
            .article-featured-image { margin: -32px -28px 28px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
        }
        @media (max-width: 768px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar { position: static; }
            .article-content-area { padding: 24px 20px; border-radius: var(--radius); }
            .article-featured-image { margin: -24px -20px 24px; border-radius: var(--radius) var(--radius) 0 0; }
            .article-banner { padding: 48px 0 36px; min-height: 200px; }
            .article-banner h1 { font-size: 1.4rem; }
            .article-meta-row { font-size: 0.8rem; gap: 12px; }
            .article-content { font-size: 0.98rem; }
            .mobile-menu-toggle { display: flex; }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--secondary);
                flex-direction: column;
                padding: 16px 20px 24px;
                gap: 6px;
                border-bottom: 3px solid var(--primary);
                box-shadow: 0 12px 30px rgba(0,0,0,0.4);
                z-index: 999;
            }
            .nav-links.open { display: flex; }
            .nav-link, .nav-cta-btn {
                width: 100%;
                justify-content: center;
                padding: 13px 20px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .nav-cta-btn { margin-top: 8px; }
            .article-footer-meta { flex-direction: column; align-items: flex-start; }
            .section-cta { padding: 44px 0; }
            .section-cta h2 { font-size: 1.4rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; gap: 8px; }
        }
        @media (max-width: 520px) {
            .article-banner h1 { font-size: 1.2rem; }
            .article-content-area { padding: 18px 14px; border-radius: var(--radius-sm); }
            .article-featured-image { margin: -18px -14px 18px; border-radius: var(--radius-sm) var(--radius-sm) 0 0; }
            .article-content { font-size: 0.94rem; line-height: 1.75; }
            .article-content h2 { font-size: 1.2rem; }
            .article-content h3 { font-size: 1.05rem; }
            .container { padding: 0 14px; }
            .breadcrumb { font-size: 0.78rem; }
            .stats-mini { grid-template-columns: 1fr 1fr; }
            .cta-btn-large { padding: 13px 26px; font-size: 0.95rem; }
        }

/* roulang page: category1 */
/* ============ 设计变量 ============ */
        :root {
            --bg-deep: #0a0e1a;
            --bg-card: #111827;
            --bg-card-hover: #161d2e;
            --bg-elevated: #182032;
            --bg-nav: rgba(10, 14, 26, 0.92);
            --text-primary: #e8ecf1;
            --text-secondary: #b0b9c6;
            --text-weak: #6b7280;
            --accent-blue: #3b82f6;
            --accent-blue-light: #60a5fa;
            --accent-blue-dark: #2563eb;
            --accent-gold: #f59e0b;
            --accent-gold-light: #fbbf24;
            --accent-emerald: #10b981;
            --accent-cyan: #06b6d4;
            --border-subtle: #1e293b;
            --border-card: #263148;
            --border-active: #3b82f6;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
            --shadow-md: 0 6px 20px rgba(0,0,0,0.4);
            --shadow-lg: 0 12px 36px rgba(0,0,0,0.55);
            --shadow-glow-blue: 0 0 30px rgba(59,130,246,0.25);
            --shadow-glow-gold: 0 0 24px rgba(245,158,11,0.3);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --nav-height: 68px;
        }

        /* ============ Reset & Base ============ */
        *, *::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);
            background-color: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.65;
            min-height: 100vh;
            overflow-x: hidden;
        }
        a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }
        img { max-width: 100%; height: auto; display: block; }
        button, input { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        :focus-visible { outline: 2px solid var(--accent-blue-light); outline-offset: 3px; border-radius: 4px; }

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

        /* ============ Header & Nav ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-nav);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            height: var(--nav-height);
            transition: background var(--transition-normal), box-shadow var(--transition-normal);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(10, 14, 26, 0.96);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: 0.5px;
            color: var(--text-primary);
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .logo-link:hover { color: var(--accent-blue-light); }
        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(59,130,246,0.35);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255,255,255,0.04);
        }
        .nav-link.active {
            color: #fff;
            background: rgba(59,130,246,0.18);
            box-shadow: inset 0 0 0 1px rgba(59,130,246,0.35);
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.95rem;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), #4f46e5);
            box-shadow: 0 4px 16px rgba(59,130,246,0.35);
            transition: all var(--transition-normal);
            white-space: nowrap;
        }
        .nav-cta-btn:hover {
            color: #fff;
            box-shadow: 0 6px 24px rgba(59,130,246,0.5);
            transform: translateY(-1px);
            background: linear-gradient(135deg, var(--accent-blue-light), #6366f1);
        }
        .nav-cta-btn:active { transform: scale(0.97); }

        /* 汉堡菜单 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            z-index: 1001;
            padding: 8px;
            background: none;
            border: none;
            width: 40px;
            height: 32px;
            justify-content: center;
            align-items: center;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 3px;
            transition: all var(--transition-normal);
            transform-origin: center;
        }
        .hamburger.active span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
        .hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
        .hamburger.active span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

        /* 移动端导航抽屉 */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.7);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition-normal);
        }
        .mobile-nav-overlay.open {
            display: block;
            opacity: 1;
        }
        .mobile-nav-panel {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100vh;
            background: var(--bg-card);
            z-index: 1000;
            padding: 90px 28px 40px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            transition: right var(--transition-slow);
            border-left: 1px solid var(--border-card);
            box-shadow: var(--shadow-lg);
        }
        .mobile-nav-panel.open { right: 0; }
        .mobile-nav-panel .nav-link,
        .mobile-nav-panel .nav-cta-btn {
            display: block;
            text-align: center;
            padding: 14px 20px;
            font-size: 1rem;
        }

        /* ============ Category Banner ============ */
        .category-banner {
            position: relative;
            margin-top: var(--nav-height);
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            overflow: hidden;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10,14,26,0.82) 0%, rgba(10,14,26,0.9) 60%, rgba(10,14,26,0.96) 100%);
            z-index: 1;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(59,130,246,0.15) 0%, transparent 55%),
                        radial-gradient(ellipse at 70% 40%, rgba(245,158,11,0.1) 0%, transparent 50%);
            z-index: 2;
        }
        .banner-content {
            position: relative;
            z-index: 3;
            text-align: center;
            padding: 50px 24px;
        }
        .banner-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            background: rgba(59,130,246,0.2);
            color: var(--accent-blue-light);
            border: 1px solid rgba(59,130,246,0.35);
            margin-bottom: 18px;
        }
        .banner-title {
            font-size: 3rem;
            font-weight: 900;
            letter-spacing: 1px;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.2;
        }
        .banner-title .highlight {
            background: linear-gradient(135deg, var(--accent-gold-light), var(--accent-gold));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .banner-desc {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 620px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .banner-stats-row {
            display: flex;
            justify-content: center;
            gap: 48px;
            flex-wrap: wrap;
        }
        .banner-stat {
            text-align: center;
        }
        .banner-stat-num {
            font-size: 2.6rem;
            font-weight: 900;
            color: #fff;
            line-height: 1;
            letter-spacing: 1px;
        }
        .banner-stat-num.gold { color: var(--accent-gold-light); text-shadow: 0 0 28px rgba(245,158,11,0.4); }
        .banner-stat-num.blue { color: var(--accent-blue-light); text-shadow: 0 0 28px rgba(59,130,246,0.4); }
        .banner-stat-num.emerald { color: var(--accent-emerald); text-shadow: 0 0 28px rgba(16,185,129,0.4); }
        .banner-stat-label {
            font-size: 0.9rem;
            color: var(--text-weak);
            margin-top: 6px;
            letter-spacing: 0.5px;
        }

        /* ============ 板块通用 ============ */
        .section {
            padding: 70px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent-blue-light);
            margin-bottom: 10px;
            background: rgba(59,130,246,0.1);
            padding: 5px 14px;
            border-radius: 16px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-weak);
            max-width: 560px;
            margin: 0 auto;
        }

        /* ============ 筛选标签栏 ============ */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            padding: 10px 0 30px;
        }
        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            border-radius: 22px;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            color: var(--text-secondary);
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            transition: all var(--transition-fast);
            white-space: nowrap;
            user-select: none;
        }
        .filter-tag:hover {
            color: var(--text-primary);
            border-color: var(--border-active);
            background: var(--bg-card-hover);
        }
        .filter-tag.active {
            color: #fff;
            background: var(--accent-blue);
            border-color: var(--accent-blue);
            box-shadow: var(--shadow-glow-blue);
        }

        /* ============ 攻略卡片网格 ============ */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-card);
            transition: all var(--transition-normal);
            cursor: pointer;
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border-active);
            background: var(--bg-card-hover);
        }
        .guide-card-img-wrap {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-elevated);
        }
        .guide-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .guide-card:hover .guide-card-img-wrap img { transform: scale(1.06); }
        .guide-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            border-radius: 14px;
            font-size: 0.75rem;
            font-weight: 700;
            background: rgba(10,14,26,0.85);
            color: var(--accent-gold-light);
            backdrop-filter: blur(6px);
            letter-spacing: 0.5px;
            z-index: 2;
        }
        .guide-card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .guide-card-title {
            font-size: 1.08rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .guide-card-excerpt {
            font-size: 0.88rem;
            color: var(--text-weak);
            line-height: 1.55;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .guide-card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-weak);
            padding-top: 4px;
            border-top: 1px solid var(--border-subtle);
            margin-top: auto;
        }
        .guide-card-meta span { display: flex; align-items: center; gap: 4px; }
        .guide-card-stat-num { color: var(--accent-blue-light); font-weight: 700; }

        /* ============ 热门排行区 ============ */
        .hot-ranking-section {
            background: var(--bg-elevated);
            border-top: 1px solid var(--border-card);
            border-bottom: 1px solid var(--border-card);
        }
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-card);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .ranking-item:hover {
            border-color: var(--border-active);
            box-shadow: var(--shadow-md);
            background: var(--bg-card-hover);
            transform: translateX(3px);
        }
        .rank-num {
            font-size: 1.8rem;
            font-weight: 900;
            min-width: 50px;
            text-align: center;
            color: var(--text-weak);
            letter-spacing: 1px;
            line-height: 1;
        }
        .ranking-item:nth-child(1) .rank-num { color: var(--accent-gold-light); text-shadow: 0 0 20px rgba(245,158,11,0.5); }
        .ranking-item:nth-child(2) .rank-num { color: #c0c0c0; }
        .ranking-item:nth-child(3) .rank-num { color: #cd7f32; }
        .rank-img {
            width: 70px;
            height: 50px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .rank-info { flex: 1; min-width: 0; }
        .rank-title {
            font-weight: 700;
            color: #fff;
            font-size: 0.98rem;
            margin-bottom: 3px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .rank-meta {
            font-size: 0.8rem;
            color: var(--text-weak);
        }
        .rank-badge {
            padding: 5px 14px;
            border-radius: 16px;
            font-size: 0.78rem;
            font-weight: 700;
            background: rgba(245,158,11,0.15);
            color: var(--accent-gold-light);
            white-space: nowrap;
            flex-shrink: 0;
        }

        /* ============ 技巧速查区 ============ */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .tip-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 22px 18px;
            text-align: center;
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .tip-card:hover {
            border-color: var(--accent-blue);
            box-shadow: var(--shadow-glow-blue);
            transform: translateY(-3px);
        }
        .tip-icon {
            font-size: 2.2rem;
            margin-bottom: 10px;
            display: block;
        }
        .tip-card h4 {
            font-weight: 700;
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 6px;
        }
        .tip-card p {
            font-size: 0.8rem;
            color: var(--text-weak);
            line-height: 1.45;
        }

        /* ============ FAQ 区 ============ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 700;
            color: #fff;
            font-size: 0.98rem;
            user-select: none;
            transition: background var(--transition-fast);
        }
        .faq-question:hover { background: var(--bg-card-hover); }
        .faq-arrow {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-elevated);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform var(--transition-normal);
            flex-shrink: 0;
            font-size: 0.7rem;
            color: var(--text-weak);
        }
        .faq-item.open .faq-arrow { transform: rotate(180deg); background: var(--accent-blue); color: #fff; }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-normal);
            padding: 0 22px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 250px;
            padding: 0 22px 18px;
        }

        /* ============ CTA 区 ============ */
        .cta-section {
            text-align: center;
            background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-elevated) 100%);
            border-top: 1px solid var(--border-card);
        }
        .cta-box {
            background: linear-gradient(135deg, rgba(59,130,246,0.1) 0%, rgba(79,70,229,0.1) 100%);
            border: 1px solid rgba(59,130,246,0.25);
            border-radius: var(--radius-xl);
            padding: 48px 36px;
            max-width: 700px;
            margin: 0 auto;
            box-shadow: var(--shadow-glow-blue);
        }
        .cta-box h3 {
            font-size: 1.7rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }
        .cta-box p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 1rem;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 28px;
            font-weight: 700;
            font-size: 1rem;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), #4f46e5);
            border: none;
            cursor: pointer;
            box-shadow: 0 6px 22px rgba(59,130,246,0.4);
            transition: all var(--transition-normal);
            letter-spacing: 0.5px;
        }
        .btn-primary:hover {
            box-shadow: 0 10px 30px rgba(59,130,246,0.55);
            transform: translateY(-2px);
            background: linear-gradient(135deg, var(--accent-blue-light), #6366f1);
        }
        .btn-primary:active { transform: scale(0.96); }

        /* ============ Footer ============ */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-card);
            padding: 56px 0 28px;
            color: var(--text-weak);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 40px;
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .footer-brand-desc {
            font-size: 0.88rem;
            line-height: 1.7;
            color: var(--text-weak);
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--text-weak);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover { color: var(--accent-blue-light); }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            padding-top: 22px;
            border-top: 1px solid var(--border-subtle);
            font-size: 0.82rem;
            color: var(--text-weak);
        }
        .footer-bottom a { color: var(--accent-blue-light); }
        .footer-bottom a:hover { text-decoration: underline; }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .guide-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
            .tips-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .banner-title { font-size: 2.4rem; }
            .banner-stats-row { gap: 32px; }
            .banner-stat-num { font-size: 2.1rem; }
            .category-banner { min-height: 340px; }
        }
        @media (max-width: 768px) {
            .hamburger { display: flex; }
            .nav-links { display: none; }
            .mobile-nav-overlay, .mobile-nav-panel { display: block; }
            .guide-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
            .tips-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
            .section { padding: 48px 0; }
            .section-title { font-size: 1.6rem; }
            .banner-title { font-size: 2rem; }
            .banner-desc { font-size: 1rem; }
            .banner-stats-row { gap: 24px; }
            .banner-stat-num { font-size: 1.7rem; }
            .category-banner { min-height: 300px; }
            .ranking-item { padding: 12px 14px; gap: 10px; }
            .rank-num { font-size: 1.4rem; min-width: 36px; }
            .rank-img { width: 55px; height: 40px; }
            .cta-box { padding: 32px 20px; }
            .cta-box h3 { font-size: 1.4rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 14px; }
            .guide-grid { grid-template-columns: 1fr; gap: 14px; }
            .tips-grid { grid-template-columns: 1fr; gap: 10px; }
            .footer-grid { grid-template-columns: 1fr; gap: 22px; }
            .filter-bar { gap: 6px; }
            .filter-tag { padding: 7px 14px; font-size: 0.8rem; }
            .section-title { font-size: 1.35rem; }
            .banner-title { font-size: 1.6rem; }
            .banner-desc { font-size: 0.9rem; }
            .banner-stats-row { gap: 16px; flex-direction: column; }
            .banner-stat-num { font-size: 1.5rem; }
            .category-banner { min-height: 280px; }
            .banner-content { padding: 30px 14px; }
            .ranking-item { flex-wrap: wrap; }
            .rank-badge { margin-left: auto; }
            .cta-box h3 { font-size: 1.2rem; }
            .btn-primary { padding: 12px 24px; font-size: 0.9rem; }
            .section { padding: 36px 0; }
            .section-header { margin-bottom: 28px; }
            .guide-card-body { padding: 14px; }
            .guide-card-title { font-size: 0.95rem; }
        }