/* roulang page: index */
:root {
            --primary: #1a2744;
            --primary-light: #243356;
            --primary-lighter: #2d4068;
            --accent: #e63946;
            --accent-hover: #c62828;
            --accent-light: #ff4d58;
            --gold: #d4a853;
            --gold-light: #f0d78c;
            --gold-pale: #fdf6e8;
            --bg: #f5f6f8;
            --bg-alt: #eef1f5;
            --bg-warm: #fafaf7;
            --text: #1e293b;
            --text-strong: #0f172a;
            --text-light: #64748b;
            --text-lighter: #94a3b8;
            --white: #ffffff;
            --card: #ffffff;
            --card-hover: #fafbfc;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow: 0 4px 16px rgba(0,0,0,0.07), 0 1px 4px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.09), 0 2px 8px rgba(0,0,0,0.05);
            --shadow-lg: 0 12px 36px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.06);
            --shadow-xl: 0 20px 50px rgba(0,0,0,0.13), 0 6px 18px rgba(0,0,0,0.07);
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --nav-height: 68px;
        }

        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;scroll-padding-top:var(--nav-height);-webkit-text-size-adjust:100%}
        body{font-family:var(--font-sans);font-size:16px;line-height:1.65;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}
        a{color:inherit;text-decoration:none;transition:color var(--transition)}
        img{max-width:100%;height:auto;display:block}
        button,input{font:inherit;color:inherit;border:none;background:none;cursor:pointer}
        button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
        ul,ol{list-style:none}
        h1,h2,h3,h4,h5,h6{line-height:1.3;color:var(--text-strong);font-weight:700}
        strong{font-weight:600}

        .container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}
        @media(max-width:768px){.container{padding:0 16px}}

        /* header */
        .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(--nav-height);display:flex;align-items:center}
        .header-inner{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px;height:100%}
        .logo-wrap{display:flex;align-items:center;gap:10px;flex-shrink:0}
        .logo-icon{width:38px;height:38px;background:linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:var(--white);font-weight:800;font-size:18px;letter-spacing:-0.5px;box-shadow:0 2px 8px rgba(26,39,68,0.25)}
        .logo-text{font-size:19px;font-weight:700;color:var(--primary);letter-spacing:-0.3px;white-space:nowrap}
        .logo-text span{color:var(--accent)}
        .nav-main{display:flex;align-items:center;gap:6px}
        .nav-link{display:inline-flex;align-items:center;padding:8px 16px;border-radius:var(--radius-sm);font-weight:500;font-size:15px;color:var(--text-light);transition:all var(--transition);white-space:nowrap;position:relative}
        .nav-link:hover{color:var(--primary);background:var(--bg)}
        .nav-link.active{color:var(--accent);background:rgba(230,57,70,0.06);font-weight:600}
        .nav-link.active::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:20px;height:3px;background:var(--accent);border-radius:3px}
        .nav-cta{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;background:var(--accent);color:var(--white);border-radius:var(--radius-sm);font-weight:600;font-size:14px;transition:all var(--transition);white-space:nowrap;margin-left:8px;box-shadow:0 2px 8px rgba(230,57,70,0.3)}
        .nav-cta:hover{background:var(--accent-hover);box-shadow:0 4px 14px rgba(230,57,70,0.4);transform:translateY(-1px);color:var(--white)}
        .nav-cta:active{transform:translateY(0);box-shadow:0 1px 4px rgba(230,57,70,0.3)}
        .mobile-toggle{display:none;width:36px;height:36px;align-items:center;justify-content:center;border-radius:var(--radius-sm);font-size:22px;color:var(--text);transition:all var(--transition-fast)}
        .mobile-toggle:hover{background:var(--bg);color:var(--primary)}
        @media(max-width:768px){
            .mobile-toggle{display:flex}
            .nav-main{position:fixed;top:var(--nav-height);left:0;right:0;background:var(--white);flex-direction:column;align-items:stretch;padding:12px 16px 20px;gap:2px;border-bottom:2px solid var(--border);box-shadow:var(--shadow-lg);transform:translateY(-110%);opacity:0;pointer-events:none;transition:all var(--transition-slow);z-index:999}
            .nav-main.open{transform:translateY(0);opacity:1;pointer-events:auto}
            .nav-link{padding:12px 16px;font-size:16px;border-radius:var(--radius)}
            .nav-link.active::after{display:none}
            .nav-cta{margin-left:0;margin-top:8px;justify-content:center;padding:13px 20px;font-size:15px;border-radius:var(--radius)}
        }

        /* hero */
        .hero{position:relative;background:var(--primary);background-image:linear-gradient(180deg, rgba(26,39,68,0.82) 0%, rgba(26,39,68,0.88) 40%, rgba(26,39,68,0.94) 100%), url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;background-repeat:no-repeat;padding:90px 0 100px;display:flex;align-items:center;min-height:520px;overflow:hidden}
        .hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 30% 50%, rgba(212,168,83,0.12) 0%, transparent 60%);pointer-events:none}
        .hero .container{position:relative;z-index:2;display:flex;align-items:center;gap:50px}
        .hero-content{flex:1;max-width:620px}
        .hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,0.12);border:1px solid rgba(255,255,255,0.2);color:var(--gold-light);padding:6px 14px;border-radius:20px;font-size:13px;font-weight:500;margin-bottom:20px;backdrop-filter:blur(4px);letter-spacing:0.3px}
        .hero-badge i{font-size:11px;color:var(--accent-light)}
        .hero h1{font-size:clamp(30px, 4.5vw, 48px);font-weight:800;color:var(--white);line-height:1.2;margin-bottom:16px;letter-spacing:-0.5px}
        .hero h1 span{color:var(--gold-light);position:relative}
        .hero h1 span::after{content:'';position:absolute;bottom:2px;left:0;right:0;height:3px;background:var(--accent);border-radius:3px;opacity:0.5}
        .hero-desc{font-size:17px;color:rgba(255,255,255,0.8);line-height:1.7;margin-bottom:32px;max-width:520px}
        .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-weight:600;font-size:15px;transition:all var(--transition);white-space:nowrap;letter-spacing:0.2px}
        .btn-primary{background:var(--accent);color:var(--white);box-shadow:0 4px 16px rgba(230,57,70,0.35)}
        .btn-primary:hover{background:var(--accent-hover);box-shadow:0 6px 22px rgba(230,57,70,0.45);transform:translateY(-2px);color:var(--white)}
        .btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px rgba(230,57,70,0.3)}
        .btn-outline{background:transparent;color:var(--white);border:2px solid rgba(255,255,255,0.4);box-shadow:none}
        .btn-outline:hover{background:rgba(255,255,255,0.08);border-color:rgba(255,255,255,0.7);transform:translateY(-2px);color:var(--white)}
        .hero-visual{flex-shrink:0;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle, rgba(212,168,83,0.2) 0%, rgba(26,39,68,0.3) 70%);display:flex;align-items:center;justify-content:center;position:relative}
        .hero-visual::before{content:'';position:absolute;inset:16px;border-radius:50%;border:2px dashed rgba(212,168,83,0.3);animation:spin-slow 20s linear infinite}
        .hero-visual-inner{font-size:64px;color:var(--gold-light);font-weight:800;letter-spacing:-2px;text-shadow:0 0 40px rgba(212,168,83,0.4)}
        @keyframes spin-slow{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
        @media(max-width:768px){
            .hero{padding:60px 0 70px;min-height:auto}
            .hero .container{flex-direction:column;gap:30px;text-align:center}
            .hero-content{max-width:100%}
            .hero-desc{max-width:100%;font-size:16px}
            .hero-actions{justify-content:center}
            .hero-visual{width:160px;height:160px;margin:0 auto}
            .hero-visual-inner{font-size:40px}
            .hero h1{font-size:28px}
        }

        /* sections */
        .section{padding:72px 0}
        .section-header{text-align:center;margin-bottom:48px}
        .section-label{display:inline-block;font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:1.5px;color:var(--accent);margin-bottom:10px}
        .section-title{font-size:clamp(24px, 3.5vw, 34px);font-weight:800;color:var(--text-strong);margin-bottom:12px;letter-spacing:-0.3px}
        .section-subtitle{font-size:16px;color:var(--text-light);max-width:560px;margin:0 auto;line-height:1.7}
        .section-alt{background:var(--white)}
        .section-dark{background:var(--primary);color:var(--white)}
        .section-dark .section-title{color:var(--white)}
        .section-dark .section-subtitle{color:rgba(255,255,255,0.7)}
        @media(max-width:768px){.section{padding:48px 0}.section-header{margin-bottom:32px}}

        /* features grid */
        .features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
        .feature-card{background:var(--card);border-radius:var(--radius-lg);padding:32px 28px;box-shadow:var(--shadow-sm);border:1px solid var(--border);transition:all var(--transition);position:relative;overflow:hidden}
        .feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg, var(--accent), var(--gold));opacity:0;transition:opacity var(--transition)}
        .feature-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);border-color:transparent}
        .feature-card:hover::before{opacity:1}
        .feature-icon{width:52px;height:52px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px;background:var(--bg);color:var(--accent);transition:all var(--transition)}
        .feature-card:hover .feature-icon{background:var(--accent);color:var(--white);box-shadow:0 4px 14px rgba(230,57,70,0.3)}
        .feature-card h3{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--text-strong)}
        .feature-card p{font-size:14px;color:var(--text-light);line-height:1.7}
        @media(max-width:1024px){.features-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:520px){.features-grid{grid-template-columns:1fr}.feature-card{padding:24px 20px}}

        /* category entrance */
        .category-cards{display:grid;grid-template-columns:repeat(1,1fr);gap:24px;max-width:700px;margin:0 auto}
        .cat-card{display:flex;align-items:center;gap:28px;background:var(--card);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border);transition:all var(--transition);cursor:pointer;padding:0}
        .cat-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);border-color:transparent}
        .cat-card-img{width:200px;height:160px;flex-shrink:0;overflow:hidden;position:relative}
        .cat-card-img img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-slow)}
        .cat-card:hover .cat-card-img img{transform:scale(1.06)}
        .cat-card-img::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg, rgba(26,39,68,0.15) 0%, transparent 50%)}
        .cat-card-body{flex:1;padding:24px 24px 24px 0}
        .cat-card-tag{display:inline-block;font-size:12px;font-weight:600;color:var(--accent);background:rgba(230,57,70,0.07);padding:4px 10px;border-radius:4px;margin-bottom:10px;letter-spacing:0.5px}
        .cat-card h3{font-size:22px;font-weight:700;margin-bottom:6px;color:var(--text-strong)}
        .cat-card p{font-size:14px;color:var(--text-light);line-height:1.6;margin-bottom:12px}
        .cat-card-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14px;color:var(--accent);transition:gap var(--transition)}
        .cat-card:hover .cat-card-link{gap:10px}
        @media(max-width:600px){
            .cat-card{flex-direction:column;gap:0}
            .cat-card-img{width:100%;height:180px}
            .cat-card-body{padding:20px}
        }

        /* stats */
        .stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
        .stat-item{background:rgba(255,255,255,0.06);border-radius:var(--radius-lg);padding:28px 20px;border:1px solid rgba(255,255,255,0.1);transition:all var(--transition)}
        .stat-item:hover{background:rgba(255,255,255,0.1);transform:translateY(-2px)}
        .stat-number{font-size:clamp(28px,4vw,42px);font-weight:800;color:var(--gold-light);letter-spacing:-1px;margin-bottom:6px}
        .stat-label{font-size:14px;color:rgba(255,255,255,0.7);font-weight:500}
        @media(max-width:768px){.stats-row{grid-template-columns:repeat(2,1fr);gap:14px}.stat-item{padding:20px 16px}}
        @media(max-width:400px){.stats-row{grid-template-columns:1fr 1fr}}

        /* news list */
        .news-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
        .news-card{display:flex;gap:18px;background:var(--card);border-radius:var(--radius-lg);padding:18px;box-shadow:var(--shadow-sm);border:1px solid var(--border);transition:all var(--transition);align-items:flex-start}
        .news-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:transparent}
        .news-card-thumb{width:130px;height:100px;flex-shrink:0;border-radius:var(--radius);overflow:hidden}
        .news-card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-slow)}
        .news-card:hover .news-card-thumb img{transform:scale(1.05)}
        .news-card-info{flex:1;min-width:0}
        .news-card-cat{font-size:11px;font-weight:600;color:var(--accent);text-transform:uppercase;letter-spacing:0.8px;margin-bottom:4px}
        .news-card h4{font-size:15px;font-weight:600;color:var(--text-strong);line-height:1.4;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
        .news-card p{font-size:13px;color:var(--text-light);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:8px}
        .news-card-meta{font-size:12px;color:var(--text-lighter)}
        .news-empty{text-align:center;padding:40px 20px;color:var(--text-light);font-size:15px;background:var(--card);border-radius:var(--radius-lg);grid-column:1/-1;border:1px dashed var(--border)}
        @media(max-width:768px){.news-list{grid-template-columns:1fr}.news-card{padding:14px;gap:14px}.news-card-thumb{width:100px;height:80px}}
        @media(max-width:400px){.news-card{flex-direction:column}.news-card-thumb{width:100%;height:160px}}

        /* comparison */
        .compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:28px;max-width:900px;margin:0 auto}
        .compare-card{background:var(--card);border-radius:var(--radius-lg);padding:32px 28px;box-shadow:var(--shadow);border:2px solid var(--border);transition:all var(--transition);position:relative}
        .compare-card.highlight{border-color:var(--accent);box-shadow:var(--shadow-lg);background:linear-gradient(180deg, #fffbfb 0%, #fff 100%)}
        .compare-card.highlight::before{content:'推荐';position:absolute;top:-14px;right:24px;background:var(--accent);color:var(--white);padding:5px 14px;border-radius:20px;font-size:12px;font-weight:700;letter-spacing:0.5px;box-shadow:0 3px 10px rgba(230,57,70,0.35)}
        .compare-card h3{font-size:20px;font-weight:700;margin-bottom:16px;text-align:center}
        .compare-list{list-style:none;padding:0}
        .compare-list li{padding:10px 0;border-bottom:1px solid var(--border-light);font-size:14px;color:var(--text);display:flex;align-items:center;gap:10px}
        .compare-list li:last-child{border-bottom:none}
        .compare-list li i{font-size:14px;width:18px;text-align:center;flex-shrink:0}
        .compare-list li i.fa-check{color:#10b981}
        .compare-list li i.fa-times{color:#94a3b8}
        .compare-list li i.fa-star{color:var(--gold)}
        @media(max-width:600px){.compare-wrap{grid-template-columns:1fr;gap:20px}.compare-card{padding:24px 20px}}

        /* testimonials */
        .testimonial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
        .testimonial-card{background:var(--card);border-radius:var(--radius-lg);padding:24px 22px;box-shadow:var(--shadow-sm);border:1px solid var(--border);transition:all var(--transition)}
        .testimonial-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
        .testimonial-stars{color:var(--gold);font-size:14px;margin-bottom:10px;letter-spacing:1px}
        .testimonial-text{font-size:14px;color:var(--text);line-height:1.7;margin-bottom:14px;font-style:italic}
        .testimonial-author{font-size:13px;font-weight:600;color:var(--text-strong)}
        .testimonial-role{font-size:12px;color:var(--text-lighter)}
        @media(max-width:1024px){.testimonial-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:520px){.testimonial-grid{grid-template-columns:1fr}}

        /* faq */
        .faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
        .faq-item{background:var(--card);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);transition:all var(--transition);box-shadow:var(--shadow-xs)}
        .faq-item:hover{border-color:var(--border);box-shadow:var(--shadow-sm)}
        .faq-q{padding:18px 24px;font-weight:600;font-size:15px;color:var(--text-strong);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:14px;user-select:none;transition:background var(--transition-fast)}
        .faq-q:hover{background:var(--bg)}
        .faq-q i{transition:transform var(--transition);font-size:13px;color:var(--text-lighter);flex-shrink:0}
        .faq-item.open .faq-q i{transform:rotate(180deg);color:var(--accent)}
        .faq-a{max-height:0;overflow:hidden;transition:max-height var(--transition-slow), padding var(--transition-slow);padding:0 24px;font-size:14px;color:var(--text-light);line-height:1.7}
        .faq-item.open .faq-a{max-height:300px;padding:0 24px 18px}

        /* cta */
        .cta-section{background:linear-gradient(160deg, var(--primary) 0%, var(--primary-light) 50%, #1e3555 100%);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:0.08;pointer-events:none}
        .cta-inner{position:relative;z-index:2;text-align:center;max-width:650px;margin:0 auto}
        .cta-inner h2{font-size:clamp(24px,4vw,34px);font-weight:800;color:var(--white);margin-bottom:14px}
        .cta-inner p{font-size:16px;color:rgba(255,255,255,0.75);margin-bottom:28px;line-height:1.7}
        .cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

        /* footer */
        .site-footer{background:var(--primary);color:rgba(255,255,255,0.7);padding:48px 0 28px;border-top:1px solid rgba(255,255,255,0.08)}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:36px;margin-bottom:36px}
        .footer-brand .logo-text{color:var(--white);font-size:20px;margin-bottom:8px;display:block}
        .footer-brand p{font-size:13px;color:rgba(255,255,255,0.55);line-height:1.7;max-width:300px}
        .footer-col h4{color:var(--white);font-size:14px;font-weight:600;margin-bottom:14px;letter-spacing:0.3px}
        .footer-col ul{display:flex;flex-direction:column;gap:8px}
        .footer-col a{font-size:13px;color:rgba(255,255,255,0.55);transition:color var(--transition);display:inline-flex;align-items:center;gap:5px}
        .footer-col a:hover{color:var(--gold-light)}
        .footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px;color:rgba(255,255,255,0.4)}
        @media(max-width:768px){.footer-grid{grid-template-columns:1fr;gap:24px}.footer-bottom{flex-direction:column;text-align:center}}

        /* utility */
        .text-accent{color:var(--accent)}
        .text-gold{color:var(--gold)}
        .mt-0{margin-top:0}
        .mt-2{margin-top:8px}
        .mt-4{margin-top:16px}
        .mb-0{margin-bottom:0}
        .mb-2{margin-bottom:8px}
        .mb-4{margin-bottom:16px}
        .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* roulang page: article */
:root {
            --primary: #1a365d;
            --primary-dark: #0f2440;
            --primary-light: #2c5f8a;
            --accent: #d69e2e;
            --accent-light: #ecc94b;
            --accent-dark: #b7791f;
            --bg: #f7fafc;
            --bg-alt: #edf2f7;
            --white: #ffffff;
            --text: #2d3748;
            --text-light: #718096;
            --text-lighter: #a0aec0;
            --border: #e2e8f0;
            --border-light: #edf2f7;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.09), 0 4px 8px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.11), 0 6px 12px rgba(0, 0, 0, 0.06);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --content-max: 820px;
            --nav-height: 68px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: 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;
        }

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

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

        ul {
            list-style: none;
        }

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

        .container--content {
            max-width: var(--content-max);
        }

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 24px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: -0.01em;
            transition: opacity var(--transition);
        }

        .logo-link:hover {
            opacity: 0.85;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(26, 54, 93, 0.25);
        }

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

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(26, 54, 93, 0.05);
        }

        .nav-link.active {
            color: var(--primary);
            background: rgba(26, 54, 93, 0.08);
            font-weight: 600;
        }

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

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 10px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            color: #fff;
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
            box-shadow: 0 2px 10px rgba(214, 158, 46, 0.35);
            transition: all var(--transition);
            white-space: nowrap;
            margin-left: 8px;
        }

        .nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(214, 158, 46, 0.45);
            color: #fff;
        }

        .nav-cta:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(214, 158, 46, 0.3);
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            flex-shrink: 0;
        }

        .nav-toggle:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }

        /* ========== INNER BANNER ========== */
        .inner-banner {
            position: relative;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 40%, var(--primary-light) 100%);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 48px 0;
            min-height: 180px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .inner-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 36, 64, 0.55) 0%, rgba(26, 54, 93, 0.7) 100%);
            z-index: 1;
        }

        .inner-banner .container {
            position: relative;
            z-index: 2;
        }

        .inner-banner-content {
            text-align: center;
            color: #fff;
        }

        .inner-banner-label {
            display: inline-block;
            padding: 5px 14px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 12px;
            backdrop-filter: blur(6px);
        }

        .inner-banner-title {
            font-size: 1.8rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrap {
            padding: 16px 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(--text-light);
            transition: color var(--transition);
        }

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

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

        .breadcrumb .current {
            color: var(--text);
            font-weight: 500;
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ========== ARTICLE MAIN ========== */
        .article-section {
            padding: 36px 0 56px;
            flex: 1;
        }

        .article-card {
            background: var(--white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow);
            overflow: hidden;
            border: 1px solid var(--border-light);
        }

        .article-header {
            padding: 36px 40px 20px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 16px;
            font-size: 0.85rem;
            color: var(--text-light);
        }

        .article-category-tag {
            display: inline-block;
            padding: 5px 14px;
            background: rgba(214, 158, 46, 0.1);
            color: var(--accent-dark);
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.8rem;
            letter-spacing: 0.02em;
        }

        .article-meta-divider {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--text-lighter);
            flex-shrink: 0;
        }

        .article-meta-item {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .article-meta-item i {
            font-size: 0.75rem;
            color: var(--text-lighter);
        }

        .article-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--primary-dark);
            line-height: 1.35;
            letter-spacing: -0.01em;
            margin-bottom: 8px;
        }

        .article-featured-image {
            width: 100%;
            max-height: 440px;
            object-fit: cover;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .article-body {
            padding: 32px 40px 40px;
        }

        .article-content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
            word-break: break-word;
        }

        .article-content h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin: 2em 0 0.8em;
            padding-bottom: 0.5em;
            border-bottom: 2px solid var(--border-light);
            line-height: 1.35;
        }

        .article-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin: 1.6em 0 0.6em;
            line-height: 1.4;
        }

        .article-content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            margin: 1.3em 0 0.5em;
        }

        .article-content p {
            margin-bottom: 1.2em;
        }

        .article-content ul,
        .article-content ol {
            margin: 0.8em 0 1.4em;
            padding-left: 1.5em;
        }

        .article-content ul {
            list-style-type: disc;
        }

        .article-content ol {
            list-style-type: decimal;
        }

        .article-content li {
            margin-bottom: 0.5em;
        }

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

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

        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
            margin: 1.5em 0;
            box-shadow: var(--shadow-sm);
        }

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

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

        .article-content table th {
            background: var(--bg-alt);
            font-weight: 600;
            color: var(--primary-dark);
        }

        .article-content code {
            background: var(--bg-alt);
            padding: 2px 7px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--primary);
            font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
        }

        .article-content pre {
            background: #1a202c;
            color: #e2e8f0;
            padding: 20px 24px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 1.5em 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }

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

        .article-content a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

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

        .article-content strong {
            color: var(--primary-dark);
        }

        /* ========== NOT FOUND ========== */
        .not-found-card {
            background: var(--white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow);
            text-align: center;
            padding: 60px 32px;
            border: 1px solid var(--border-light);
        }

        .not-found-icon {
            font-size: 3.5rem;
            color: var(--text-lighter);
            margin-bottom: 18px;
            display: block;
        }

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

        .not-found-desc {
            color: var(--text-light);
            margin-bottom: 24px;
            font-size: 0.95rem;
        }

        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

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

        /* ========== RELATED POSTS ========== */
        .related-section {
            padding: 0 0 60px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            color: var(--accent-dark);
            text-transform: uppercase;
            margin-bottom: 6px;
        }

        .section-title {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 28px;
            letter-spacing: -0.01em;
        }

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

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

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

        .related-card-image {
            width: 100%;
            height: 190px;
            object-fit: cover;
            display: block;
        }

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

        .related-card-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--accent-dark);
            background: rgba(214, 158, 46, 0.08);
            padding: 3px 10px;
            border-radius: 50px;
            margin-bottom: 8px;
            width: fit-content;
            letter-spacing: 0.03em;
        }

        .related-card-title {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--primary-dark);
            line-height: 1.45;
            margin-bottom: 8px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-title a {
            color: inherit;
            transition: color var(--transition);
        }

        .related-card-title a:hover {
            color: var(--primary-light);
        }

        .related-card-date {
            font-size: 0.8rem;
            color: var(--text-lighter);
            display: flex;
            align-items: center;
            gap: 4px;
            margin-top: 6px;
        }

        .related-empty {
            text-align: center;
            color: var(--text-light);
            padding: 40px 0;
            font-size: 0.95rem;
            grid-column: 1 / -1;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(160deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(236, 201, 75, 0.12) 0%, transparent 70%);
            top: -100px;
            right: -80px;
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            bottom: -60px;
            left: -40px;
            border-radius: 50%;
            pointer-events: none;
        }

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

        .cta-inner {
            text-align: center;
            color: #fff;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        .cta-inner p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: var(--accent);
            color: #1a202c;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            box-shadow: 0 4px 18px rgba(214, 158, 46, 0.5);
            letter-spacing: -0.01em;
        }

        .btn-cta-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(214, 158, 46, 0.6);
            color: #1a202c;
        }

        .btn-cta-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
        }

        .btn-cta-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1a202c;
            color: #cbd5e0;
            padding: 48px 0 24px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 24px;
        }

        .footer-brand .logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: #a0aec0;
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 0.9rem;
            color: #a0aec0;
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        .footer-col ul li a i {
            font-size: 0.65rem;
            color: var(--accent);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: #718096;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .article-header {
                padding: 28px 28px 16px;
            }

            .article-body {
                padding: 24px 28px 32px;
            }

            .article-title {
                font-size: 1.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
            }

            .nav-main {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 20px;
                gap: 2px;
                box-shadow: var(--shadow-md);
                border-bottom: 1px solid var(--border);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
                z-index: 999;
            }

            .nav-main.open {
                transform: translateY(0);
                opacity: 1;
            }

            .nav-link {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }

            .nav-link.active::after {
                display: none;
            }

            .nav-link.active {
                background: rgba(26, 54, 93, 0.06);
            }

            .nav-cta {
                width: 100%;
                justify-content: center;
                margin-left: 0;
                margin-top: 8px;
                padding: 13px 20px;
                font-size: 0.95rem;
            }

            .nav-toggle {
                display: flex;
            }

            .inner-banner {
                padding: 32px 0;
                min-height: 140px;
            }

            .inner-banner-title {
                font-size: 1.35rem;
            }

            .article-section {
                padding: 20px 0 36px;
            }

            .article-card {
                border-radius: var(--radius);
                box-shadow: var(--shadow-sm);
            }

            .article-header {
                padding: 22px 18px 14px;
            }

            .article-title {
                font-size: 1.3rem;
            }

            .article-body {
                padding: 18px 18px 28px;
            }

            .article-content {
                font-size: 1rem;
                line-height: 1.8;
            }

            .article-content h2 {
                font-size: 1.25rem;
            }

            .article-content h3 {
                font-size: 1.1rem;
            }

            .article-featured-image {
                max-height: 260px;
            }

            .article-meta {
                font-size: 0.8rem;
                gap: 10px;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .related-card-image {
                height: 200px;
            }

            .cta-inner h2 {
                font-size: 1.5rem;
            }

            .cta-inner p {
                font-size: 0.95rem;
            }

            .btn-cta-primary,
            .btn-cta-outline {
                padding: 12px 24px;
                font-size: 0.9rem;
                width: 100%;
                justify-content: center;
            }

            .cta-buttons {
                flex-direction: column;
                gap: 10px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }

            .breadcrumb {
                font-size: 0.8rem;
            }

            .breadcrumb .current {
                max-width: 180px;
            }

            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .inner-banner-title {
                font-size: 1.15rem;
            }

            .inner-banner {
                padding: 24px 0;
                min-height: 110px;
            }

            .article-title {
                font-size: 1.15rem;
            }

            .article-header {
                padding: 18px 14px 12px;
            }

            .article-body {
                padding: 14px 14px 22px;
            }

            .article-content {
                font-size: 0.95rem;
                line-height: 1.75;
            }

            .article-featured-image {
                max-height: 200px;
            }

            .logo-link {
                font-size: 1.05rem;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }

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

/* roulang page: category1 */
/* ==================== 设计变量 ==================== */
        :root {
            --primary: #d4343e;
            --primary-dark: #a8202a;
            --primary-light: #fef0f1;
            --primary-glow: rgba(212, 52, 62, 0.15);
            --secondary: #1a1a2e;
            --secondary-light: #252540;
            --accent: #c9a96e;
            --accent-light: #f5ecd7;
            --bg: #f7f5f2;
            --bg-alt: #f0ede8;
            --card-bg: #ffffff;
            --text: #1a1a2e;
            --text-secondary: #4a4a5e;
            --text-light: #7a7a8e;
            --text-muted: #9ca3af;
            --border: #e5e0d8;
            --border-light: #f0ece6;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 3px rgba(0,0,0,0.04);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --shadow-xl: 0 24px 64px rgba(0,0,0,0.16);
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
            --container-narrow: 960px;
            --nav-height: 72px;
        }

        /* ==================== 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;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            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, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        ul, ol {
            list-style: none;
        }

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

        .container-narrow {
            max-width: var(--container-narrow);
        }

        /* ==================== Header & Navigation ==================== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            transition: box-shadow var(--transition);
        }

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

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

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 18px;
            letter-spacing: 0.5px;
            box-shadow: 0 2px 8px var(--primary-glow);
        }

        .logo-text {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--secondary);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--primary);
        }

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

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 10px 22px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 2px 12px var(--primary-glow);
            transition: all var(--transition);
            white-space: nowrap;
            margin-left: 8px;
        }

        .nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(212, 52, 62, 0.35);
            color: #fff;
        }

        .nav-cta:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px var(--primary-glow);
        }

        /* 汉堡菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            z-index: 1001;
            background: none;
            border: none;
        }

        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--secondary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ==================== 分类 Banner ==================== */
        .category-banner {
            position: relative;
            background: linear-gradient(160deg, var(--secondary) 0%, var(--secondary-light) 40%, #1f1f35 100%);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 56px 0 48px;
            color: #fff;
            overflow: hidden;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26,26,46,0.75) 0%, rgba(26,26,46,0.88) 100%);
            z-index: 1;
        }

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

        .category-banner-content {
            max-width: 680px;
        }

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.2);
            padding: 7px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: rgba(255,255,255,0.9);
            margin-bottom: 16px;
        }

        .category-badge i {
            font-size: 0.75rem;
            color: var(--accent);
        }

        .category-banner h1 {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .category-banner h1 span {
            color: var(--accent);
        }

        .category-banner .banner-desc {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.75);
            line-height: 1.6;
            margin-bottom: 20px;
            max-width: 560px;
        }

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

        .category-stat-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.8);
        }

        .category-stat-item strong {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
        }

        .category-stat-item i {
            color: var(--accent);
            font-size: 0.85rem;
        }

        /* ==================== 面包屑 ==================== */
        .breadcrumb-wrapper {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border-light);
            padding: 12px 0;
        }

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

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

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

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

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* ==================== 主内容区 ==================== */
        .main-content {
            padding: 48px 0 64px;
        }

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

        /* ==================== 筛选标签栏 ==================== */
        .filter-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 28px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-light);
        }

        .filter-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
            margin-right: 4px;
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--card-bg);
            border: 1px solid var(--border);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .filter-tag.active-filter {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 8px var(--primary-glow);
        }

        .filter-count {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: rgba(0,0,0,0.08);
            font-size: 0.75rem;
            margin-left: 6px;
            font-weight: 600;
        }

        .filter-tag.active-filter .filter-count {
            background: rgba(255,255,255,0.25);
        }

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

        .article-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .article-card-image {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-alt);
        }

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

        .article-card:hover .article-card-image img {
            transform: scale(1.06);
        }

        .article-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            display: inline-flex;
            align-items: center;
            padding: 5px 12px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(0,0,0,0.65);
            backdrop-filter: blur(6px);
            color: #fff;
            z-index: 2;
        }

        .article-card-tag.beginner {
            background: rgba(34, 197, 94, 0.85);
        }

        .article-card-tag.advanced {
            background: rgba(212, 52, 62, 0.85);
        }

        .article-card-tag.intermediate {
            background: rgba(201, 169, 110, 0.85);
        }

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

        .article-card-body h3 {
            font-size: 1.08rem;
            font-weight: 700;
            line-height: 1.45;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .article-card:hover .article-card-body h3 {
            color: var(--primary);
        }

        .article-card-body .card-excerpt {
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.55;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .article-card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.8rem;
            color: var(--text-muted);
            padding-top: 4px;
        }

        .article-card-meta i {
            font-size: 0.7rem;
            margin-right: 3px;
        }

        .difficulty-stars {
            display: inline-flex;
            gap: 2px;
            color: var(--accent);
            font-size: 0.7rem;
        }

        .difficulty-stars .star-empty {
            color: var(--border);
        }

        /* ==================== 侧边栏 ==================== */
        .sidebar {
            position: sticky;
            top: calc(var(--nav-height) + 24px);
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .sidebar-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid var(--border-light);
        }

        .sidebar-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h4 i {
            color: var(--primary);
            font-size: 0.9rem;
        }

        .popular-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .popular-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .popular-item:last-child {
            padding-bottom: 0;
            border-bottom: none;
        }

        .popular-item:hover .popular-title {
            color: var(--primary);
        }

        .popular-rank {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            color: #fff;
            background: var(--text-muted);
        }

        .popular-item:nth-child(1) .popular-rank {
            background: linear-gradient(135deg, #e63946, #c41230);
        }

        .popular-item:nth-child(2) .popular-rank {
            background: linear-gradient(135deg, #e67e22, #d4731a);
        }

        .popular-item:nth-child(3) .popular-rank {
            background: linear-gradient(135deg, #c9a96e, #b8934f);
        }

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

        .popular-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-fast);
        }

        .popular-views {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* 标签云 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-cloud-item {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg);
            border: 1px solid transparent;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .tag-cloud-item:hover {
            color: var(--primary);
            background: var(--primary-light);
            border-color: var(--primary);
        }

        /* ==================== 技巧对比卡片区块 ==================== */
        .compare-section {
            padding: 48px 0;
            background: var(--bg-alt);
        }

        .compare-section .section-header {
            text-align: center;
            margin-bottom: 36px;
        }

        .compare-section .section-header h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 8px;
        }

        .compare-section .section-header p {
            color: var(--text-light);
            font-size: 0.95rem;
        }

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

        .compare-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--border-light);
            text-align: center;
            transition: all var(--transition);
            position: relative;
        }

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

        .compare-card.featured {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px var(--primary-glow);
        }

        .compare-card .compare-badge {
            position: absolute;
            top: -11px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 50px;
            white-space: nowrap;
        }

        .compare-card .compare-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            background: var(--primary-light);
            color: var(--primary);
        }

        .compare-card h5 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
        }

        .compare-card .compare-desc {
            font-size: 0.85rem;
            color: var(--text-light);
            line-height: 1.5;
            margin-bottom: 16px;
        }

        .compare-rating {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 4px;
            color: var(--accent);
            font-size: 0.8rem;
            margin-bottom: 8px;
        }

        .compare-rating .rating-score {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text);
            margin-left: 6px;
        }

        /* ==================== 分页 ==================== */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
        }

        .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 14px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--card-bg);
            border: 1px solid var(--border);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .page-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .page-btn.active-page {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 700;
            box-shadow: 0 2px 8px var(--primary-glow);
            pointer-events: none;
        }

        .page-btn.page-dots {
            border: none;
            background: transparent;
            pointer-events: none;
            color: var(--text-muted);
        }

        .page-btn.page-nav {
            font-weight: 600;
        }

        /* ==================== CTA 区块 ==================== */
        .cta-section {
            padding: 64px 0;
            background: linear-gradient(160deg, var(--secondary) 0%, #1f1f3a 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212,52,62,0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .cta-section h2 span {
            color: var(--accent);
        }

        .cta-section .cta-desc {
            color: rgba(255,255,255,0.7);
            font-size: 1rem;
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }

        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 8px 28px rgba(212, 52, 62, 0.4);
            transition: all var(--transition);
        }

        .btn-cta-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(212, 52, 62, 0.5);
            color: #fff;
        }

        .btn-cta-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            background: transparent;
            border: 2px solid rgba(255,255,255,0.3);
            transition: all var(--transition);
        }

        .btn-cta-outline:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
            color: #fff;
        }

        /* ==================== Footer ==================== */
        .site-footer {
            background: var(--secondary);
            color: rgba(255,255,255,0.7);
            padding: 52px 0 28px;
        }

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

        .footer-brand .logo-text {
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 10px;
            display: block;
        }

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.6;
            color: rgba(255,255,255,0.55);
            max-width: 300px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            color: rgba(255,255,255,0.55);
            font-size: 0.88rem;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-col ul li a i {
            font-size: 0.6rem;
            color: var(--accent);
        }

        .footer-col ul li a:hover {
            color: #fff;
            transform: translateX(3px);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.82rem;
            color: rgba(255,255,255,0.4);
        }

        /* ==================== 响应式设计 ==================== */
        @media (max-width: 1024px) {
            .content-layout {
                grid-template-columns: 1fr 280px;
                gap: 28px;
            }

            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .compare-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 14px;
            }

            .category-banner h1 {
                font-size: 2rem;
            }

            .category-banner .banner-desc {
                font-size: 1rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }

            /* 移动端导航 */
            .header-inner {
                padding: 0 16px;
            }

            .menu-toggle {
                display: flex;
            }

            .nav-main {
                position: fixed;
                top: 0;
                right: -100%;
                width: 80%;
                max-width: 360px;
                height: 100vh;
                background: var(--card-bg);
                flex-direction: column;
                align-items: stretch;
                padding: 88px 24px 32px;
                gap: 4px;
                box-shadow: var(--shadow-xl);
                transition: right var(--transition);
                z-index: 999;
                overflow-y: auto;
            }

            .nav-main.open {
                right: 0;
            }

            .nav-link {
                padding: 14px 18px;
                border-radius: var(--radius);
                font-size: 1rem;
                width: 100%;
                justify-content: flex-start;
            }

            .nav-link.active::after {
                display: none;
            }

            .nav-link.active {
                border-left: 3px solid var(--primary);
                border-radius: 0 var(--radius) var(--radius) 0;
            }

            .nav-cta {
                margin-left: 0;
                margin-top: 12px;
                width: 100%;
                justify-content: center;
                padding: 14px 22px;
                font-size: 1rem;
            }

            /* 移动端覆盖层 */
            .nav-overlay {
                display: none;
                position: fixed;
                inset: 0;
                background: rgba(0,0,0,0.5);
                z-index: 998;
                transition: opacity var(--transition);
            }

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

            /* 布局调整 */
            .content-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .sidebar-card {
                padding: 18px;
            }

            .articles-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .compare-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .compare-card.featured {
                order: -1;
            }

            .category-banner {
                padding: 40px 0 36px;
            }

            .category-banner h1 {
                font-size: 1.7rem;
            }

            .category-banner .banner-desc {
                font-size: 0.9rem;
            }

            .category-stats {
                gap: 18px;
            }

            .filter-bar {
                gap: 8px;
            }

            .filter-tag {
                padding: 6px 13px;
                font-size: 0.8rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-brand p {
                max-width: 100%;
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }

            .pagination {
                flex-wrap: wrap;
                gap: 5px;
            }

            .page-btn {
                min-width: 36px;
                height: 36px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }

            .header-inner {
                padding: 0 14px;
            }

            .logo-text {
                font-size: 1rem;
            }

            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }

            .category-banner h1 {
                font-size: 1.4rem;
            }

            .category-banner {
                padding: 32px 0 28px;
            }

            .category-stats {
                flex-direction: column;
                gap: 8px;
            }

            .sidebar {
                grid-template-columns: 1fr;
            }

            .articles-grid {
                grid-template-columns: 1fr;
            }

            .article-card-body h3 {
                font-size: 1rem;
            }

            .article-card-body {
                padding: 14px 16px 16px;
            }

            .compare-grid {
                grid-template-columns: 1fr;
            }

            .cta-section {
                padding: 44px 0;
            }

            .cta-section h2 {
                font-size: 1.3rem;
            }

            .btn-cta-primary,
            .btn-cta-outline {
                padding: 12px 24px;
                font-size: 0.9rem;
                width: 100%;
                justify-content: center;
            }

            .cta-buttons {
                flex-direction: column;
                gap: 10px;
            }

            .pagination {
                gap: 4px;
            }

            .page-btn {
                min-width: 32px;
                height: 32px;
                padding: 0 10px;
                font-size: 0.78rem;
            }

            .filter-bar {
                gap: 6px;
                padding-bottom: 14px;
                margin-bottom: 18px;
            }

            .filter-tag {
                padding: 5px 11px;
                font-size: 0.76rem;
            }

            .breadcrumb {
                font-size: 0.8rem;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                font-size: 0.76rem;
            }
        }

        /* ==================== 动画辅助 ==================== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-fade-in {
            animation: fadeInUp 0.6s ease forwards;
        }

        /* 骨架加载样式（可选） */
        .article-card {
            animation: fadeInUp 0.5s ease forwards;
        }