/* roulang page: index */
:root {
            --primary: #1a3c5e;
            --primary-light: #1f4d78;
            --primary-dark: #0f2640;
            --accent: #c8944a;
            --accent-light: #d9a85f;
            --accent-dark: #a67a35;
            --bg: #f5f4f0;
            --bg-white: #ffffff;
            --bg-dark: #0f1a28;
            --bg-card: #ffffff;
            --text: #1a1a1a;
            --text-secondary: #5a5a5a;
            --text-light: #8a8a8a;
            --text-on-dark: #e8e6e0;
            --text-on-primary: #ffffff;
            --border: #e0dcd4;
            --border-light: #eeece6;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow: 0 4px 16px rgba(0,0,0,0.07), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 28px rgba(0,0,0,0.09), 0 3px 10px rgba(0,0,0,0.05);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.11), 0 6px 18px rgba(0,0,0,0.06);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --nav-height: 72px;
        }
        *,*::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:1.7;color:var(--text);background:var(--bg);overflow-x:hidden}
        img{max-width:100%;height:auto;display:block}
        a{text-decoration:none;color:inherit;transition:var(--transition)}
        button{cursor:pointer;font-family:inherit;border:none;background:none;transition:var(--transition)}
        ul,ol{list-style:none}
        h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:700;color:var(--text)}
        .container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}
        .section{padding:72px 0}
        .section-label{display:inline-block;font-size:13px;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;color:var(--accent);margin-bottom:12px;padding:5px 14px;background:rgba(200,148,74,0.08);border-radius:20px}
        .section-title{font-size:2.2rem;font-weight:700;margin-bottom:16px;color:var(--primary-dark);letter-spacing:-0.01em}
        .section-desc{font-size:1.05rem;color:var(--text-secondary);max-width:640px;line-height:1.8}
        .section-header{margin-bottom:48px}
        .section-header.centered{text-align:center}
        .section-header.centered .section-desc{margin:0 auto}

        /* ========== HEADER / NAV ========== */
        .site-header{position:sticky;top:0;z-index:1000;background:var(--bg-white);border-bottom:1px solid var(--border-light);box-shadow:var(--shadow-sm)}
        .nav-panel{display:flex;align-items:center;justify-content:space-between;height:var(--nav-height);gap:20px}
        .nav-logo{display:flex;align-items:center;gap:10px;font-size:1.25rem;font-weight:700;color:var(--primary);white-space:nowrap;letter-spacing:-0.01em}
        .nav-logo .logo-icon{width:40px;height:40px;border-radius:var(--radius-sm);background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem;flex-shrink:0}
        .nav-links{display:flex;align-items:center;gap:6px}
        .nav-links a{display:flex;align-items:center;gap:8px;padding:10px 18px;border-radius:var(--radius);font-size:0.95rem;font-weight:500;color:var(--text-secondary);transition:var(--transition);position:relative;white-space:nowrap}
        .nav-links a:hover{color:var(--primary);background:rgba(26,60,94,0.04)}
        .nav-links a.active{color:var(--primary);background:rgba(26,60,94,0.07);font-weight:600}
        .nav-links a.active::after{content:'';position:absolute;bottom:4px;left:50%;transform:translateX(-50%);width:20px;height:3px;border-radius:2px;background:var(--accent)}
        .nav-links .nav-icon{font-size:0.9rem;color:var(--accent)}
        .nav-cta-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 22px;border-radius:var(--radius);font-size:0.9rem;font-weight:600;background:var(--accent);color:#fff;white-space:nowrap;box-shadow:0 2px 8px rgba(200,148,74,0.3);transition:var(--transition)}
        .nav-cta-btn:hover{background:var(--accent-light);box-shadow:0 4px 16px rgba(200,148,74,0.4);transform:translateY(-1px)}
        .nav-cta-btn:active{transform:translateY(0);box-shadow:0 2px 6px rgba(200,148,74,0.25)}
        .mobile-toggle{display:none;width:42px;height:42px;border-radius:var(--radius-sm);align-items:center;justify-content:center;font-size:1.3rem;color:var(--primary);border:1px solid var(--border);background:var(--bg-white)}
        .mobile-toggle:hover{background:rgba(26,60,94,0.04)}
        @media(max-width:1024px){
            .nav-links{gap:2px}
            .nav-links a{padding:10px 14px;font-size:0.9rem}
        }
        @media(max-width:768px){
            .mobile-toggle{display:flex}
            .nav-links{display:none;position:absolute;top:var(--nav-height);left:0;right:0;flex-direction:column;background:var(--bg-white);border-bottom:1px solid var(--border);box-shadow:var(--shadow-md);padding:12px 16px;gap:4px;z-index:999}
            .nav-links.open{display:flex}
            .nav-links a{padding:14px 16px;width:100%;border-radius:var(--radius-sm);justify-content:flex-start}
            .nav-links a.active::after{display:none}
            .nav-links a.active{border-left:3px solid var(--accent);border-radius:0 var(--radius-sm) var(--radius-sm) 0}
            .nav-cta-btn{width:100%;justify-content:center;margin-top:4px}
        }

        /* ========== HERO ========== */
        .hero{position:relative;padding:100px 0 120px;background:var(--primary-dark);overflow:hidden;min-height:560px;display:flex;align-items:center}
        .hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:0.25;z-index:0}
        .hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,38,64,0.75) 0%,rgba(15,38,64,0.9) 100%);z-index:1}
        .hero .container{position:relative;z-index:2}
        .hero-content{max-width:700px}
        .hero-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 18px;border-radius:24px;background:rgba(200,148,74,0.18);color:var(--accent-light);font-size:0.9rem;font-weight:600;margin-bottom:24px;border:1px solid rgba(200,148,74,0.25)}
        .hero-badge .badge-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:pulse-dot 2s infinite}
        @keyframes pulse-dot{0%,100%{opacity:1}50%{opacity:0.4}}
        .hero-title{font-size:3rem;font-weight:800;color:#fff;line-height:1.2;margin-bottom:20px;letter-spacing:-0.02em}
        .hero-title .highlight{color:var(--accent-light)}
        .hero-desc{font-size:1.15rem;color:#c5c0b8;line-height:1.8;margin-bottom:36px;max-width:540px}
        .hero-actions{display:flex;gap:14px;flex-wrap:wrap}
        .btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:var(--radius);font-size:1rem;font-weight:600;transition:var(--transition);white-space:nowrap;letter-spacing:0.01em}
        .btn-primary{background:var(--accent);color:#fff;box-shadow:0 4px 18px rgba(200,148,74,0.35)}
        .btn-primary:hover{background:var(--accent-light);box-shadow:0 6px 24px rgba(200,148,74,0.45);transform:translateY(-2px)}
        .btn-primary:active{transform:translateY(0)}
        .btn-outline{border:2px solid rgba(255,255,255,0.4);color:#fff;background:transparent}
        .btn-outline:hover{border-color:#fff;background:rgba(255,255,255,0.06);transform:translateY(-2px)}
        .btn-outline:active{transform:translateY(0)}
        .btn:focus-visible{outline:3px solid var(--accent-light);outline-offset:3px;border-radius:var(--radius)}
        .hero-stats{display:flex;gap:40px;margin-top:48px;flex-wrap:wrap}
        .hero-stat{text-align:left}
        .hero-stat .stat-num{font-size:2.2rem;font-weight:800;color:#fff;line-height:1}
        .hero-stat .stat-label{font-size:0.85rem;color:#b0aaa0;margin-top:6px}
        @media(max-width:768px){
            .hero{padding:64px 0 80px;min-height:auto}
            .hero-title{font-size:2rem}
            .hero-desc{font-size:1rem}
            .hero-stats{gap:24px}
            .hero-stat .stat-num{font-size:1.6rem}
            .btn{padding:12px 22px;font-size:0.95rem}
        }
        @media(max-width:520px){
            .hero-title{font-size:1.6rem}
            .hero-actions{flex-direction:column}
            .btn{width:100%;justify-content:center}
            .hero-stats{gap:16px}
        }

        /* ========== SERVICES SECTION ========== */
        .services-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
        .service-card{background:var(--bg-card);border-radius:var(--radius-lg);padding:32px 24px;box-shadow:var(--shadow);border:1px solid var(--border-light);transition:var(--transition);text-align:center;position:relative;overflow:hidden}
        .service-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transition:var(--transition)}
        .service-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
        .service-card:hover::before{opacity:1}
        .service-icon{width:56px;height:56px;border-radius:var(--radius);background:rgba(26,60,94,0.06);display:flex;align-items:center;justify-content:center;margin:0 auto 18px;font-size:1.5rem;color:var(--primary);transition:var(--transition)}
        .service-card:hover .service-icon{background:var(--primary);color:#fff;transform:scale(1.05)}
        .service-card h3{font-size:1.1rem;margin-bottom:8px;color:var(--primary-dark)}
        .service-card p{font-size:0.9rem;color:var(--text-secondary);line-height:1.6}
        @media(max-width:1024px){.services-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:520px){.services-grid{grid-template-columns:1fr}}

        /* ========== CATEGORY ENTRY ========== */
        .category-entry-section{background:var(--bg-white)}
        .category-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
        .category-card{background:var(--bg-card);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border-light);transition:var(--transition);display:block}
        .category-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-5px)}
        .category-card-img{width:100%;height:200px;object-fit:cover;display:block}
        .category-card-body{padding:24px}
        .category-card-body h3{font-size:1.15rem;margin-bottom:8px;color:var(--primary-dark)}
        .category-card-body p{font-size:0.9rem;color:var(--text-secondary);line-height:1.6;margin-bottom:14px}
        .category-card-tag{display:inline-flex;align-items:center;gap:6px;font-size:0.85rem;font-weight:600;color:var(--accent)}
        .category-card-tag i{font-size:0.75rem;transition:var(--transition)}
        .category-card:hover .category-card-tag i{transform:translateX(3px)}
        @media(max-width:768px){.category-cards{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:520px){.category-cards{grid-template-columns:1fr}}

        /* ========== NEWS LIST (CMS) ========== */
        .news-section{background:var(--bg)}
        .news-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
        .news-item{background:var(--bg-card);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);transition:var(--transition);display:flex;flex-direction:column;gap:10px}
        .news-item:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:var(--border)}
        .news-item .news-category{display:inline-block;font-size:0.8rem;font-weight:600;color:var(--accent);padding:4px 12px;background:rgba(200,148,74,0.08);border-radius:14px;width:fit-content}
        .news-item h3{font-size:1.08rem;color:var(--primary-dark);line-height:1.4}
        .news-item p{font-size:0.9rem;color:var(--text-secondary);line-height:1.6;flex-grow:1}
        .news-item .news-meta{font-size:0.8rem;color:var(--text-light);display:flex;align-items:center;gap:12px}
        .news-item .news-meta time{display:flex;align-items:center;gap:4px}
        .news-empty{padding:48px;text-align:center;color:var(--text-light);font-size:1rem;grid-column:1/-1;background:var(--bg-card);border-radius:var(--radius);border:1px dashed var(--border)}
        @media(max-width:768px){.news-list{grid-template-columns:1fr}}
        @media(max-width:520px){.news-item{padding:20px}}

        /* ========== PROCESS SECTION ========== */
        .process-section{background:var(--bg-white)}
        .process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;position:relative}
        .process-steps::before{content:'';position:absolute;top:40px;left:12%;right:12%;height:2px;background:var(--border);z-index:0}
        .process-step{text-align:center;position:relative;z-index:1;padding:0 8px}
        .step-number{width:80px;height:80px;border-radius:50%;background:var(--bg);border:3px solid var(--border);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:1.6rem;font-weight:800;color:var(--primary);transition:var(--transition);position:relative}
        .process-step:hover .step-number{border-color:var(--accent);background:var(--accent);color:#fff;box-shadow:0 6px 20px rgba(200,148,74,0.3)}
        .process-step h4{font-size:1rem;margin-bottom:6px;color:var(--primary-dark)}
        .process-step p{font-size:0.85rem;color:var(--text-secondary);line-height:1.5}
        @media(max-width:768px){
            .process-steps{grid-template-columns:repeat(2,1fr);gap:24px}
            .process-steps::before{display:none}
        }
        @media(max-width:520px){.process-steps{grid-template-columns:1fr}}

        /* ========== STATS SECTION ========== */
        .stats-section{background:var(--primary-dark);padding:60px 0;position:relative;overflow:hidden}
        .stats-section .section-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:0.12;z-index:0}
        .stats-section .container{position:relative;z-index:1}
        .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
        .stat-item{text-align:center;padding:20px}
        .stat-item .stat-icon{font-size:2rem;color:var(--accent-light);margin-bottom:12px}
        .stat-item .stat-value{font-size:2.8rem;font-weight:800;color:#fff;line-height:1;margin-bottom:8px}
        .stat-item .stat-name{font-size:0.95rem;color:#b0aaa0;font-weight:500}
        @media(max-width:768px){.stats-grid{grid-template-columns:repeat(2,1fr)}.stat-item .stat-value{font-size:2rem}}
        @media(max-width:520px){.stats-grid{grid-template-columns:1fr}}

        /* ========== CASE CARDS ========== */
        .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
        .case-card{background:var(--bg-card);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border-light);transition:var(--transition)}
        .case-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-5px)}
        .case-card-img{width:100%;height:180px;object-fit:cover}
        .case-card-body{padding:22px}
        .case-card-body h3{font-size:1.05rem;margin-bottom:6px;color:var(--primary-dark)}
        .case-card-body p{font-size:0.88rem;color:var(--text-secondary);line-height:1.6;margin-bottom:12px}
        .case-card .case-tags{display:flex;gap:8px;flex-wrap:wrap}
        .case-tag{font-size:0.78rem;padding:4px 10px;border-radius:12px;background:rgba(26,60,94,0.06);color:var(--primary);font-weight:500}
        @media(max-width:768px){.case-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:520px){.case-grid{grid-template-columns:1fr}}

        /* ========== FAQ ========== */
        .faq-section{background:var(--bg)}
        .faq-list{max-width:800px;margin:0 auto}
        .faq-item{background:var(--bg-card);border-radius:var(--radius);margin-bottom:12px;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);overflow:hidden;transition:var(--transition)}
        .faq-item:hover{border-color:var(--border)}
        .faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;padding:20px 24px;font-size:1.02rem;font-weight:600;color:var(--primary-dark);text-align:left;background:none;border:none;cursor:pointer;gap:16px;transition:var(--transition)}
        .faq-question:hover{color:var(--primary)}
        .faq-question .faq-icon{flex-shrink:0;width:32px;height:32px;border-radius:50%;background:rgba(26,60,94,0.06);display:flex;align-items:center;justify-content:center;font-size:0.8rem;color:var(--primary);transition:var(--transition)}
        .faq-item.open .faq-question .faq-icon{background:var(--accent);color:#fff;transform:rotate(45deg)}
        .faq-answer{max-height:0;overflow:hidden;transition:max-height 0.35s ease,padding 0.35s ease}
        .faq-item.open .faq-answer{max-height:300px}
        .faq-answer-inner{padding:0 24px 20px;font-size:0.95rem;color:var(--text-secondary);line-height:1.8}
        @media(max-width:520px){.faq-question{font-size:0.95rem;padding:16px 18px}.faq-answer-inner{padding:0 18px 16px;font-size:0.9rem}}

        /* ========== CTA ========== */
        .cta-section{background:var(--bg-white)}
        .cta-box{background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 60%,var(--primary-light) 100%);border-radius:var(--radius-xl);padding:56px 48px;text-align:center;position:relative;overflow:hidden;box-shadow:var(--shadow-lg)}
        .cta-box .cta-bg-pattern{position:absolute;inset:0;background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;opacity:0.08;z-index:0}
        .cta-box>*{position:relative;z-index:1}
        .cta-box h2{font-size:2rem;color:#fff;margin-bottom:16px;letter-spacing:-0.01em}
        .cta-box p{font-size:1.05rem;color:#c5c0b8;margin-bottom:32px;max-width:500px;margin-left:auto;margin-right:auto;line-height:1.7}
        .cta-box .btn-primary{font-size:1.1rem;padding:16px 36px;border-radius:var(--radius)}
        @media(max-width:768px){.cta-box{padding:40px 24px}.cta-box h2{font-size:1.5rem}}
        @media(max-width:520px){.cta-box h2{font-size:1.3rem}.cta-box p{font-size:0.95rem}}

        /* ========== FOOTER ========== */
        .site-footer{background:var(--bg-dark);color:var(--text-on-dark);padding:48px 0 32px}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:32px}
        .footer-brand .footer-logo{font-size:1.2rem;font-weight:700;color:#fff;margin-bottom:10px}
        .footer-brand p{font-size:0.9rem;color:#999;line-height:1.7;max-width:280px}
        .footer-col h4{font-size:0.95rem;font-weight:600;color:#ccc;margin-bottom:16px;letter-spacing:0.03em}
        .footer-col ul{display:flex;flex-direction:column;gap:8px}
        .footer-col ul li a{font-size:0.88rem;color:#888;transition:var(--transition);display:inline-flex;align-items:center;gap:6px}
        .footer-col ul li a:hover{color:var(--accent-light)}
        .footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:24px;text-align:center;font-size:0.82rem;color:#666}
        .footer-bottom a{color:#999;transition:var(--transition)}
        .footer-bottom a:hover{color:var(--accent-light)}
        @media(max-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px}}
        @media(max-width:520px){.footer-grid{grid-template-columns:1fr;gap:24px}.footer-brand p{max-width:100%}}

        /* ========== UTILITY ========== */
        .text-center{text-align:center}
        .mb-24{margin-bottom:24px}

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #6C3CE0;
            --primary-dark: #552BB8;
            --primary-light: #8B6FE8;
            --primary-bg: #F4F0FF;
            --accent: #F7B731;
            --accent-hover: #E5A620;
            --accent-light: #FFF8E7;
            --bg: #F8F9FC;
            --bg-alt: #F0F2F7;
            --bg-dark: #1E1E30;
            --bg-dark-2: #2A2A42;
            --white: #FFFFFF;
            --text: #2D3436;
            --text-secondary: #5A6270;
            --text-light: #8B93A0;
            --text-on-dark: #E0E4EC;
            --border: #E4E8F0;
            --border-light: #F0F2F7;
            --shadow-xs: 0 1px 3px rgba(0,0,0,0.04);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.10);
            --shadow-xl: 0 16px 56px rgba(0,0,0,0.13);
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, sans-serif;
            --max-width: 1240px;
            --header-height: 72px;
        }

        /* ========== 基础 Reset ========== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        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;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul, ol {
            list-style: none;
        }
        h1, h2, h3, h4, h5, h6 {
            line-height: 1.3;
            color: var(--text);
        }

        /* ========== 容器 ========== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow {
            max-width: 960px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== Header / 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-xs);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .nav-panel {
            display: flex;
            align-items: center;
            gap: 8px;
            width: 100%;
            justify-content: space-between;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--primary-dark);
            white-space: nowrap;
            transition: opacity var(--transition-fast);
            flex-shrink: 0;
        }
        .nav-logo:hover {
            opacity: 0.82;
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            box-shadow: 0 3px 12px rgba(108,60,224,0.3);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.93rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2.5px;
            background: var(--primary);
            border-radius: 3px;
        }
        .nav-icon {
            font-size: 0.85rem;
            width: 20px;
            text-align: center;
        }
        .nav-cta-btn {
            background: linear-gradient(135deg, var(--accent), #F9C851) !important;
            color: #3D2E00 !important;
            font-weight: 600 !important;
            padding: 10px 20px !important;
            border-radius: 50px !important;
            box-shadow: 0 3px 14px rgba(247,183,49,0.35);
            transition: all var(--transition-fast) !important;
            margin-left: 6px;
        }
        .nav-cta-btn:hover {
            background: linear-gradient(135deg, var(--accent-hover), #F7B731) !important;
            box-shadow: 0 5px 20px rgba(247,183,49,0.45) !important;
            transform: translateY(-1px);
        }
        .nav-cta-btn::after {
            display: none !important;
        }
        .mobile-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            background: var(--bg);
            color: var(--text);
            font-size: 1.3rem;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .mobile-toggle:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-wrap {
            padding: 14px 0;
            background: var(--white);
            border-bottom: 1px solid var(--border-light);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.88rem;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        .breadcrumb .sep {
            color: #CDD3DC;
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ========== 板块间距 ========== */
        .section {
            padding: 64px 0;
        }
        .section-sm {
            padding: 44px 0;
        }
        .section-lg {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: -0.02em;
        }
        .section-header .subtitle {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            background: var(--primary-bg);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.82rem;
            border-radius: 50px;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        /* ========== Banner 板块 ========== */
        .category-banner {
            position: relative;
            padding: 80px 0;
            background: var(--bg-dark);
            overflow: hidden;
            color: var(--text-on-dark);
        }
        .category-banner .banner-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            z-index: 1;
        }
        .category-banner .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(30,30,48,0.88) 0%, rgba(42,42,66,0.78) 60%, rgba(30,30,48,0.9) 100%);
            z-index: 2;
        }
        .category-banner .container {
            position: relative;
            z-index: 3;
            text-align: center;
        }
        .category-banner .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 18px;
            background: rgba(255,255,255,0.1);
            border: 1px solid rgba(255,255,255,0.18);
            border-radius: 50px;
            color: var(--accent);
            font-weight: 600;
            font-size: 0.85rem;
            margin-bottom: 22px;
            backdrop-filter: blur(8px);
        }
        .category-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: -0.02em;
        }
        .category-banner .banner-desc {
            font-size: 1.12rem;
            color: rgba(255,255,255,0.75);
            max-width: 640px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .category-banner .banner-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .banner-stat-item {
            text-align: center;
        }
        .banner-stat-item .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: #FFFFFF;
            line-height: 1;
        }
        .banner-stat-item .stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
            margin-top: 6px;
        }

        /* ========== 卡片网格 ========== */
        .card-grid {
            display: grid;
            gap: 24px;
        }
        .card-grid-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .card-grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        /* ========== 卡片组件 ========== */
        .card {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--bg-alt);
        }
        .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .card:hover .card-img-wrap img {
            transform: scale(1.05);
        }
        .card-img-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            background: var(--primary);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: 50px;
            z-index: 2;
        }
        .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .card-body p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 14px;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
            transition: all var(--transition-fast);
            margin-top: auto;
        }
        .card-link:hover {
            color: var(--primary-dark);
            gap: 10px;
        }
        .card-link i {
            font-size: 0.75rem;
            transition: transform var(--transition-fast);
        }
        .card-link:hover i {
            transform: translateX(3px);
        }

        /* ========== 步骤流程 ========== */
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            counter-reset: step-counter;
        }
        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 24px 28px;
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: all var(--transition);
            position: relative;
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .step-num {
            flex-shrink: 0;
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.3rem;
            box-shadow: 0 4px 16px rgba(108,60,224,0.3);
        }
        .step-content h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
        }
        .step-content p {
            font-size: 0.93rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ========== 特性标签卡片 ========== */
        .feature-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .feature-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px 24px;
            border: 1px solid var(--border);
            text-align: center;
            transition: all var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .feature-icon-circle {
            width: 58px;
            height: 58px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            transition: all var(--transition);
        }
        .feature-card:nth-child(1) .feature-icon-circle {
            background: #EDF4FF;
            color: #3B82F6;
        }
        .feature-card:nth-child(2) .feature-icon-circle {
            background: #FEF3E2;
            color: #F59E0B;
        }
        .feature-card:nth-child(3) .feature-icon-circle {
            background: #ECFDF5;
            color: #10B981;
        }
        .feature-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ========== 平台图标列表 ========== */
        .platform-list {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }
        .platform-tag {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }
        .platform-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-bg);
            box-shadow: var(--shadow-sm);
        }
        .platform-tag i {
            font-size: 1rem;
            color: var(--primary);
        }

        /* ========== FAQ 折叠 ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item.active {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            background: var(--white);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-align: left;
            gap: 14px;
        }
        .faq-question:hover {
            background: var(--bg);
            color: var(--primary);
        }
        .faq-question i {
            font-size: 0.8rem;
            color: var(--text-light);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
            font-size: 0.93rem;
            color: var(--text-light);
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        /* ========== CTA 区域 ========== */
        .cta-section {
            background: linear-gradient(155deg, var(--bg-dark) 0%, #252540 50%, var(--bg-dark-2) 100%);
            padding: 72px 0;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(108,60,224,0.18) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 40%, rgba(247,183,49,0.1) 0%, transparent 55%);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255,255,255,0.7);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-fast);
            cursor: pointer;
            border: none;
        }
        .btn-primary {
            background: var(--accent);
            color: #3D2E00;
            box-shadow: 0 6px 24px rgba(247,183,49,0.4);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            box-shadow: 0 8px 32px rgba(247,183,49,0.5);
            transform: translateY(-2px);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.35);
        }
        .btn-outline-light:hover {
            background: rgba(255,255,255,0.08);
            border-color: rgba(255,255,255,0.6);
            transform: translateY(-2px);
        }
        .btn-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-dark);
            color: #C0C6D0;
            padding: 56px 0 28px;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand .footer-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: #9BA3AF;
            line-height: 1.6;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #E8ECF2;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a,
        .footer-col ul li span {
            color: #9BA3AF;
            font-size: 0.88rem;
            transition: color var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: #7A8290;
        }
        .footer-bottom a {
            color: #B0B8C4;
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ========== 响应式断点 ========== */
        @media (max-width: 1024px) {
            .card-grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-cards {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .mobile-toggle {
                display: flex;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                padding: 12px 16px 20px;
                gap: 4px;
                border-bottom: 2px solid var(--border);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                justify-content: flex-start;
                padding: 13px 16px;
                border-radius: var(--radius-sm);
            }
            .nav-cta-btn {
                margin-left: 0;
                justify-content: center !important;
                margin-top: 6px;
            }
            .category-banner h1 {
                font-size: 2rem;
            }
            .category-banner .banner-desc {
                font-size: 1rem;
            }
            .banner-stat-item .stat-num {
                font-size: 1.5rem;
            }
            .card-grid-2,
            .card-grid-3,
            .card-grid-4 {
                grid-template-columns: 1fr;
            }
            .feature-cards {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 44px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .step-item {
                flex-direction: column;
                gap: 14px;
                padding: 18px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .container-narrow {
                padding: 0 16px;
            }
            .category-banner {
                padding: 56px 0;
            }
            .category-banner h1 {
                font-size: 1.65rem;
            }
            .banner-stats {
                gap: 24px;
            }
            .banner-stat-item .stat-num {
                font-size: 1.3rem;
            }
            .step-num {
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
            }
            .card-body {
                padding: 16px 16px 20px;
            }
            .platform-list {
                gap: 8px;
            }
            .platform-tag {
                font-size: 0.8rem;
                padding: 6px 14px;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
        }

        /* ========== 可访问性焦点 ========== */
        a:focus-visible,
        button:focus-visible {
            outline: 2.5px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }
        .nav-cta-btn:focus-visible {
            outline-color: var(--accent);
            outline-offset: 4px;
        }

/* roulang page: article */
:root {
            --primary: #0f1b3a;
            --primary-light: #1a2f5c;
            --accent: #c8963e;
            --accent-light: #d4a853;
            --accent-glow: #e8c97a;
            --surface: #ffffff;
            --surface-alt: #f4f6fa;
            --surface-card: #ffffff;
            --text: #1e293b;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-on-dark: #e8ecf2;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --shadow-xs: 0 1px 2px rgba(15, 27, 58, 0.04);
            --shadow-sm: 0 2px 8px rgba(15, 27, 58, 0.06);
            --shadow: 0 4px 20px rgba(15, 27, 58, 0.08);
            --shadow-lg: 0 12px 40px rgba(15, 27, 58, 0.12);
            --shadow-xl: 0 20px 60px rgba(15, 27, 58, 0.16);
            --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --max-width: 1260px;
            --header-height: 72px;
        }

        *,
        *::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: 1.72;
            color: var(--text);
            background: var(--surface-alt);
            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;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

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

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

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

        /* ========== HEADER ========== */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-xs);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            background: rgba(255, 255, 255, 0.94);
        }

        .nav-panel {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 20px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.18rem;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            transition: opacity var(--transition);
            flex-shrink: 0;
        }

        .nav-logo:hover {
            opacity: 0.82;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: var(--accent-glow);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-links a {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 10px 16px;
            border-radius: var(--radius);
            font-weight: 500;
            font-size: 0.94rem;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

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

        .nav-links a.active {
            color: var(--primary);
            background: #eef2fa;
            font-weight: 600;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }

        .nav-icon {
            font-size: 0.85rem;
            color: var(--accent);
            opacity: 0.8;
        }

        .nav-cta-btn {
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 10px 20px !important;
            border-radius: var(--radius) !important;
            box-shadow: 0 2px 10px rgba(200, 150, 62, 0.3);
            margin-left: 8px;
            transition: all var(--transition) !important;
        }

        .nav-cta-btn:hover {
            box-shadow: 0 6px 22px rgba(200, 150, 62, 0.42) !important;
            transform: translateY(-1px);
            background: linear-gradient(135deg, var(--accent-light) 0%, var(--accent) 100%) !important;
            color: #fff !important;
        }

        .nav-cta-btn i {
            font-size: 0.85rem;
        }

        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--primary);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .mobile-toggle:hover {
            background: var(--surface-alt);
        }

        @media (max-width: 920px) {
            .mobile-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
                width: 42px;
                height: 42px;
            }

            .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--surface);
                flex-direction: column;
                padding: 12px 18px 24px;
                gap: 2px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                display: none;
                z-index: 999;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                width: 100%;
                padding: 13px 16px;
                border-radius: var(--radius);
            }

            .nav-cta-btn {
                margin-left: 0;
                justify-content: center;
                margin-top: 6px;
            }
        }

        @media (max-width: 520px) {
            .nav-logo {
                font-size: 1rem;
                gap: 6px;
            }

            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 0.9rem;
            }
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            background: linear-gradient(135deg, var(--primary) 0%, #162544 40%, #1a2f5c 100%);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center 35%;
            background-blend-mode: overlay;
            padding: 52px 0;
            position: relative;
            min-height: 160px;
            display: flex;
            align-items: center;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 27, 58, 0.72) 0%, rgba(15, 27, 58, 0.85) 100%);
            pointer-events: none;
        }

        .page-banner .container {
            position: relative;
            z-index: 1;
        }

        .page-banner-title {
            color: #ffffff;
            font-size: 1.8rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: 8px;
        }

        .page-banner-sub {
            color: rgba(255, 255, 255, 0.72);
            font-size: 0.95rem;
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 36px 0;
                min-height: 120px;
            }

            .page-banner-title {
                font-size: 1.4rem;
            }
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrap {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 13px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: var(--border);
            font-size: 0.7rem;
        }

        .breadcrumb .current {
            color: var(--text);
            font-weight: 500;
            pointer-events: none;
        }

        /* ========== ARTICLE LAYOUT ========== */
        .article-section {
            padding: 44px 0 56px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 40px;
            align-items: start;
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr 280px;
                gap: 28px;
            }
        }

        @media (max-width: 820px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        /* ========== MAIN CONTENT ========== */
        .article-main {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px 44px;
            border: 1px solid var(--border-light);
        }

        @media (max-width: 768px) {
            .article-main {
                padding: 24px 20px;
                border-radius: var(--radius);
            }
        }

        .article-category-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #eef2fa;
            color: var(--primary);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .article-category-tag i {
            font-size: 0.7rem;
            color: var(--accent);
        }

        .article-h1 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 18px;
            font-size: 0.88rem;
            color: var(--text-muted);
            padding-bottom: 22px;
            margin-bottom: 28px;
            border-bottom: 1px solid var(--border-light);
            flex-wrap: wrap;
        }

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

        .article-meta i {
            font-size: 0.8rem;
            color: var(--accent);
            opacity: 0.7;
        }

        .article-body {
            font-size: 1.02rem;
            line-height: 1.85;
            color: var(--text);
        }

        .article-body h2 {
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--primary);
            margin: 36px 0 14px;
            padding-top: 8px;
        }

        .article-body h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text);
            margin: 28px 0 10px;
        }

        .article-body p {
            margin-bottom: 16px;
        }

        .article-body ul,
        .article-body ol {
            margin: 12px 0 20px 20px;
            padding-left: 8px;
        }

        .article-body ul li {
            list-style: disc;
            margin-bottom: 8px;
            padding-left: 4px;
        }

        .article-body ol li {
            list-style: decimal;
            margin-bottom: 8px;
            padding-left: 4px;
        }

        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: #fdfaf5;
            padding: 16px 22px;
            margin: 22px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        .article-body img {
            border-radius: var(--radius);
            margin: 20px 0;
            box-shadow: var(--shadow-sm);
        }

        .article-body a {
            color: var(--accent);
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: #b07d2a;
        }

        /* ========== SIDEBAR ========== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: calc(var(--header-height) + 24px);
        }

        @media (max-width: 820px) {
            .sidebar {
                position: static;
                top: auto;
            }
        }

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

        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-light);
        }

        .sidebar-card h4 i {
            color: var(--accent);
            font-size: 0.85rem;
        }

        .sidebar-post-item {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition);
            border-radius: var(--radius-sm);
            padding: 8px;
            margin: 0 -8px;
        }

        .sidebar-post-item:last-child {
            border-bottom: none;
        }

        .sidebar-post-item:hover {
            background: var(--surface-alt);
        }

        .sidebar-post-thumb {
            width: 64px;
            height: 48px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--surface-alt);
        }

        .sidebar-post-info {
            flex: 1;
            min-width: 0;
        }

        .sidebar-post-info .sp-title {
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition);
        }

        .sidebar-post-item:hover .sp-title {
            color: var(--accent);
        }

        .sidebar-post-info .sp-date {
            font-size: 0.76rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

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

        .sidebar-tag {
            font-size: 0.8rem;
            padding: 5px 12px;
            border-radius: 16px;
            background: var(--surface-alt);
            color: var(--text-secondary);
            font-weight: 500;
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .sidebar-tag:hover {
            background: #eef2fa;
            color: var(--primary);
            border-color: #dde4f5;
        }

        .sidebar-cta-mini {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius);
            padding: 22px 18px;
            text-align: center;
            color: #fff;
            border: none;
            box-shadow: var(--shadow);
        }

        .sidebar-cta-mini h4 {
            color: #fff;
            border-bottom-color: rgba(255, 255, 255, 0.18);
            font-size: 1rem;
        }

        .sidebar-cta-mini h4 i {
            color: var(--accent-glow);
        }

        .sidebar-cta-mini p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.78);
            margin-bottom: 14px;
            line-height: 1.5;
        }

        .sidebar-cta-mini .btn-sm {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 9px 20px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.88rem;
            transition: all var(--transition);
            box-shadow: 0 2px 10px rgba(200, 150, 62, 0.35);
        }

        .sidebar-cta-mini .btn-sm:hover {
            background: var(--accent-light);
            box-shadow: 0 6px 20px rgba(200, 150, 62, 0.5);
            transform: translateY(-1px);
        }

        /* ========== RELATED POSTS ========== */
        .related-section {
            padding: 48px 0 56px;
            background: var(--surface);
            border-top: 1px solid var(--border);
        }

        .related-section .section-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 28px;
            text-align: center;
            letter-spacing: -0.01em;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        @media (max-width: 820px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 520px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }

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

        .related-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
            border-color: #dde4f5;
        }

        .related-card-img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            background: var(--surface-alt);
        }

        .related-card-body {
            padding: 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card-body h5 {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--primary);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition);
        }

        .related-card:hover .related-card-body h5 {
            color: var(--accent);
        }

        .related-card-body .rc-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: auto;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(170deg, var(--primary) 0%, #162544 40%, #1a3058 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(200, 150, 62, 0.08);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(200, 150, 62, 0.06);
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.72);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
            color: #fff;
            padding: 15px 36px;
            border-radius: 28px;
            font-weight: 700;
            font-size: 1.05rem;
            box-shadow: 0 6px 26px rgba(200, 150, 62, 0.4);
            transition: all var(--transition);
            letter-spacing: 0.01em;
        }

        .cta-btn:hover {
            box-shadow: 0 10px 34px rgba(200, 150, 62, 0.55);
            transform: translateY(-2px);
            color: #fff;
        }

        .cta-btn i {
            font-size: 0.9rem;
            transition: transform var(--transition);
        }

        .cta-btn:hover i {
            transform: translateX(3px);
        }

        /* ========== NOT FOUND ========== */
        .not-found-state {
            text-align: center;
            padding: 60px 20px;
        }

        .not-found-state .nf-icon {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 18px;
            opacity: 0.6;
        }

        .not-found-state h2 {
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 10px;
            font-weight: 700;
        }

        .not-found-state p {
            color: var(--text-secondary);
            margin-bottom: 22px;
            font-size: 0.95rem;
        }

        .not-found-state .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: var(--primary);
            color: #fff;
            padding: 12px 26px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
        }

        .not-found-state .btn-back:hover {
            background: var(--primary-light);
            box-shadow: var(--shadow);
            color: #fff;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0c1628;
            color: var(--text-on-dark);
            padding: 52px 0 0;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
            gap: 36px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        .footer-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .footer-brand p {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.65;
            max-width: 260px;
        }

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

        .footer-col ul li {
            margin-bottom: 9px;
        }

        .footer-col ul li a,
        .footer-col ul li span {
            font-size: 0.87rem;
            color: rgba(255, 255, 255, 0.55);
            display: flex;
            align-items: center;
            gap: 7px;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--accent-glow);
        }

        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            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-glow);
        }

        /* ========== UTILITY ========== */
        .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;
        }

        @media (max-width: 520px) {
            .article-h1 {
                font-size: 1.5rem;
            }

            .article-body {
                font-size: 0.95rem;
            }

            .cta-section h2 {
                font-size: 1.45rem;
            }

            .cta-btn {
                padding: 13px 26px;
                font-size: 0.95rem;
            }

            .related-section .section-title {
                font-size: 1.25rem;
            }
        }

        /* focus outline for accessibility */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 3px;
        }