/* ========================================
   tjxmlbx-v2 — 找电器网 · 北京啄木鸟电器维修
   全新 UX/UI 设计系统
   GEO + SEO 双优化
   ======================================== */

/* === Design Tokens === */
:root {
  --primary: #1e40af;
  --primary-light: #2563eb;
  --primary-dark: #1e3a5f;
  --accent: #ea580c;
  --accent-light: #f97316;
  --accent-dark: #c2410c;
  --success: #16a34a;
  --warning: #f59e0b;
  --bg: #f8fafc;
  --bg-card: #ffffff;
  --bg-dark: #0f172a;
  --text: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.06);
  --shadow: 0 4px 12px rgba(0,0,0,.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.12);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --font: "PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
  --container: 1240px;
  --transition: 0.25s cubic-bezier(.4,0,.2,1);
}

/* === Reset & Base === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--accent)}
ul,ol{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}

/* === Header === */
.site-header{background:var(--bg-card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;max-width:var(--container);margin:0 auto;padding:0 20px}
.header-logo{display:flex;align-items:center;gap:12px}
.header-logo img{height:40px;width:auto}
.header-logo-text{font-size:20px;font-weight:700;color:var(--primary-dark)}
.header-logo-text span{color:var(--accent);font-size:13px;display:block;font-weight:500}
.header-phone{display:flex;align-items:center;gap:10px;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;padding:10px 18px;border-radius:50px;font-weight:700;font-size:16px;white-space:nowrap}
.header-phone:hover{color:#fff;opacity:.9;transform:scale(1.02)}
.header-phone svg{width:20px;height:20px;flex-shrink:0}
.header-nav{display:flex;align-items:center;gap:4px}
.header-nav a{display:block;padding:8px 16px;border-radius:var(--radius-sm);font-size:15px;font-weight:500;color:var(--text-secondary);transition:all var(--transition)}
.header-nav a:hover,.header-nav a.active{color:var(--primary);background:rgba(30,64,175,.06)}
.header-city{position:relative;margin-left:8px}
.header-city-btn{display:flex;align-items:center;gap:6px;padding:8px 14px;border:1.5px solid var(--border);border-radius:50px;font-size:14px;color:var(--text);cursor:pointer;background:var(--bg-card);transition:all var(--transition)}
.header-city-btn:hover{border-color:var(--primary);color:var(--primary)}
.header-city-btn svg{width:16px;height:16px}
.header-city-dropdown{position:absolute;top:100%;right:0;margin-top:8px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:16px;min-width:280px;display:none;z-index:200}
.header-city-dropdown.show{display:block}
.header-city-dropdown .hot-cities{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.header-city-dropdown .hot-cities a{display:block;padding:6px 14px;border:1px solid var(--border);border-radius:20px;font-size:13px;color:var(--text-secondary)}
.header-city-dropdown .hot-cities a:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.city-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:4px}
.city-grid a{display:block;padding:6px 8px;font-size:13px;color:var(--text-secondary);border-radius:6px;text-align:center}
.city-grid a:hover{background:var(--primary);color:#fff}

/* Mobile Nav Toggle */
.nav-toggle{display:none;flex-direction:column;gap:5px;width:28px;cursor:pointer;padding:4px 0}
.nav-toggle span{display:block;height:2.5px;background:var(--text);border-radius:2px;transition:var(--transition)}
.nav-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

@media (max-width:960px){
  .header-nav{position:fixed;top:72px;left:0;right:0;bottom:0;background:var(--bg-card);flex-direction:column;padding:20px;gap:4px;transform:translateX(100%);transition:transform var(--transition);overflow-y:auto}
  .header-nav.show{transform:translateX(0)}
  .header-nav a{width:100%;padding:14px 16px;border-bottom:1px solid var(--border-light)}
  .header-city-btn{font-size:13px;padding:6px 12px}
  .nav-toggle{display:flex}
  .header-phone{padding:8px 14px;font-size:14px;gap:6px}
}

/* === Hero === */
.hero{background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 60%,var(--primary-light) 100%);color:#fff;padding:60px 0 80px;position:relative;overflow:hidden}
.hero::after{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");pointer-events:none}
.hero-inner{max-width:var(--container);margin:0 auto;padding:0 20px;position:relative;z-index:1}
.hero h1{font-size:42px;font-weight:800;line-height:1.3;margin-bottom:16px}
.hero h1 span{color:#fbbf24}
.hero p{font-size:18px;color:rgba(255,255,255,.85);max-width:600px;margin-bottom:32px;line-height:1.7}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.hero-cta .btn-primary{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;padding:14px 32px;border-radius:50px;font-size:17px;font-weight:700;border:none;cursor:pointer;box-shadow:0 4px 16px rgba(234,88,12,.4);transition:all var(--transition)}
.hero-cta .btn-primary:hover{background:var(--accent-light);transform:translateY(-2px);box-shadow:0 8px 24px rgba(234,88,12,.5);color:#fff}
.hero-cta .btn-outline{display:inline-flex;align-items:center;gap:8px;background:transparent;color:#fff;padding:14px 32px;border-radius:50px;font-size:17px;font-weight:600;border:2px solid rgba(255,255,255,.3);cursor:pointer;transition:all var(--transition)}
.hero-cta .btn-outline:hover{border-color:#fff;transform:translateY(-2px)}
.hero-stats{display:flex;gap:40px;margin-top:40px}
.hero-stats .stat{text-align:center}
.hero-stats .stat-num{font-size:32px;font-weight:800}
.hero-stats .stat-label{font-size:14px;color:rgba(255,255,255,.7);margin-top:4px}

@media (max-width:768px){
  .hero{padding:40px 0 50px}
  .hero h1{font-size:28px}
  .hero p{font-size:15px}
  .hero-stats{flex-wrap:wrap;gap:24px}
  .hero-stats .stat-num{font-size:24px}
}

/* === Trust Bar === */
.trust-bar{background:var(--bg-card);border-bottom:1px solid var(--border);padding:20px 0}
.trust-list{display:flex;justify-content:center;gap:48px;flex-wrap:wrap}
.trust-item{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--text-secondary);font-weight:500}
.trust-item .icon{font-size:24px;flex-shrink:0}
.trust-item strong{color:var(--text);font-weight:600}

@media (max-width:768px){
  .trust-list{gap:16px}
  .trust-item{font-size:13px;gap:6px}
}

/* === Section === */
.section{padding:60px 0}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:32px;font-weight:800;color:var(--text);margin-bottom:8px}
.section-title p{font-size:16px;color:var(--text-secondary);max-width:500px;margin:0 auto}

@media (max-width:768px){
  .section{padding:40px 0}
  .section-title h2{font-size:24px}
}

/* === Service Cards === */
.service-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.service-card{background:var(--bg-card);border-radius:var(--radius);padding:28px 16px;text-align:center;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);transition:all var(--transition);cursor:pointer}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--primary-light)}
.service-card .icon{font-size:36px;margin-bottom:12px;display:block}
.service-card h3{font-size:16px;font-weight:600;color:var(--text);margin-bottom:6px}
.service-card p{font-size:13px;color:var(--text-muted);line-height:1.5}
.service-card .link{display:inline-block;margin-top:10px;font-size:13px;font-weight:600;color:var(--primary)}

@media (max-width:1024px){.service-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:640px){.service-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .service-card{padding:20px 12px}
  .service-card h3{font-size:14px}
}

/* === Article Grid (home) === */
.article-grid-2col{display:grid;grid-template-columns:2fr 1fr;gap:24px}
.article-card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:all var(--transition)}
.article-card:hover{box-shadow:var(--shadow)}
.article-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--border-light)}
.article-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.article-card:hover .thumb img{transform:scale(1.05)}
.article-card .body{padding:16px 20px}
.article-card h3{font-size:17px;font-weight:600;margin-bottom:8px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.article-card .meta{font-size:12px;color:var(--text-muted);display:flex;gap:14px}
.article-sidebar{display:flex;flex-direction:column;gap:12px}
.article-sidebar .article-card{display:flex;flex-direction:row}
.article-sidebar .article-card .thumb{width:120px;flex-shrink:0;aspect-ratio:auto}
.article-sidebar .article-card .body{padding:12px 16px}
.article-sidebar .article-card h3{font-size:14px}

@media (max-width:768px){
  .article-grid-2col{grid-template-columns:1fr}
  .article-sidebar .article-card .thumb{width:100px}
}

/* === Content page (list/detail/about/contact) === */
.page-content{background:var(--bg-card);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow-sm);margin:24px 0}
.page-content h1{font-size:28px;font-weight:800;color:var(--text);margin-bottom:12px;line-height:1.4}
.page-content h2{font-size:22px;font-weight:700;margin:28px 0 12px;color:var(--text)}
.page-content h3{font-size:18px;font-weight:600;margin:20px 0 8px}
.page-content p{font-size:16px;line-height:1.85;margin-bottom:16px;color:var(--text)}
.page-content img{border-radius:var(--radius-sm);margin:16px 0}
.page-content ul,.page-content ol{padding-left:24px;margin-bottom:16px}
.page-content li{margin-bottom:8px;line-height:1.7}
.page-content blockquote{border-left:4px solid var(--primary);background:rgba(30,64,175,.04);padding:16px 20px;margin:20px 0;border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-secondary)}

/* === List Cards === */
.list-card{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--border-light);align-items:flex-start}
.list-card:last-child{border-bottom:none}
.list-card .thumb{width:180px;flex-shrink:0;border-radius:var(--radius-sm);overflow:hidden;aspect-ratio:4/3}
.list-card .thumb img{width:100%;height:100%;object-fit:cover}
.list-card .info{flex:1;min-width:0}
.list-card h3{font-size:18px;font-weight:600;margin-bottom:6px;line-height:1.5}
.list-card h3 a{color:var(--text)}
.list-card h3 a:hover{color:var(--primary)}
.list-card .desc{font-size:14px;color:var(--text-secondary);line-height:1.6;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.list-card .meta-row{display:flex;align-items:center;gap:16px;font-size:12px;color:var(--text-muted)}

@media (max-width:640px){
  .list-card{flex-direction:column}
  .list-card .thumb{width:100%;aspect-ratio:16/9}
}

/* === Pagination === */
.pagination{display:flex;justify-content:center;padding:32px 0}
.pagination ul{display:flex;gap:6px}
.pagination a,.pagination span{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;border:1px solid var(--border);color:var(--text-secondary);transition:all var(--transition)}
.pagination a:hover{border-color:var(--primary);color:var(--primary)}
.pagination a.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.pagination span{color:var(--text-muted);border:none}

/* === Breadcrumb === */
.breadcrumb{padding:16px 0}
.breadcrumb ol{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.breadcrumb li{display:flex;align-items:center;gap:6px;font-size:14px}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{color:var(--text-secondary)}
.breadcrumb .sep{color:var(--text-muted);margin:0 2px}

/* === Outlets === */
.outlet-filter{background:var(--bg-card);border-radius:var(--radius);padding:24px;margin:24px 0;box-shadow:var(--shadow-sm)}
.outlet-filter h3{font-size:16px;font-weight:600;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.filter-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.filter-tag{display:inline-flex;align-items:center;padding:8px 16px;border:1.5px solid var(--border);border-radius:50px;font-size:14px;color:var(--text-secondary);cursor:pointer;transition:all var(--transition);white-space:nowrap}
.filter-tag:hover{border-color:var(--primary);color:var(--primary)}
.filter-tag.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.outlet-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.outlet-card{background:var(--bg-card);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);transition:all var(--transition)}
.outlet-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.outlet-card .name{font-size:17px;font-weight:600;color:var(--text);margin-bottom:8px}
.outlet-card .info-row{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary);margin-bottom:6px}
.outlet-card .contact-tag{display:inline-flex;align-items:center;gap:6px;margin-top:12px;padding:6px 14px;background:rgba(30,64,175,.06);border-radius:50px;font-size:13px;color:var(--primary);font-weight:600}

@media (max-width:900px){.outlet-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:540px){.outlet-grid{grid-template-columns:1fr}}

/* === Breadcrumb */ 

/* === Article Detail === */
.article-hero{background:var(--bg-card);padding:32px 0;border-bottom:1px solid var(--border-light)}
.article-hero h1{font-size:30px;font-weight:800;line-height:1.45;margin-bottom:16px}
.article-meta{display:flex;flex-wrap:wrap;gap:20px;font-size:13px;color:var(--text-muted)}
.article-content{font-size:17px;line-height:1.9;color:var(--text)}
.article-content h2{font-size:24px;font-weight:700;margin:32px 0 14px;padding-bottom:8px;border-bottom:2px solid var(--border)}
.article-content h3{font-size:20px;font-weight:600;margin:24px 0 10px}
.article-content img{max-width:100%;border-radius:var(--radius);margin:20px auto}
.article-content table{width:100%;border-collapse:collapse;margin:20px 0}
.article-content table th,.article-content table td{border:1px solid var(--border);padding:12px 16px;text-align:left;font-size:15px}
.article-content table th{background:rgba(30,64,175,.04);font-weight:600}

@media (max-width:768px){
  .article-hero h1{font-size:22px}
  .article-content{font-size:16px}
}

/* === Related === */
.related-section{padding:40px 0}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.related-card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition)}
.related-card:hover{box-shadow:var(--shadow)}
.related-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--border-light)}
.related-card .thumb img{width:100%;height:100%;object-fit:cover}
.related-card h4{padding:12px 16px;font-size:15px;font-weight:600}
.related-card .meta{padding:0 16px 12px;font-size:12px;color:var(--text-muted)}

@media (max-width:768px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:480px){.related-grid{grid-template-columns:1fr}}

/* === CTA Banner === */
.cta-banner{background:linear-gradient(135deg,var(--primary-dark),var(--primary));color:#fff;text-align:center;padding:48px 24px;border-radius:var(--radius-lg);margin:40px 0}
.cta-banner h2{font-size:28px;margin-bottom:8px}
.cta-banner p{font-size:16px;opacity:.85;margin-bottom:24px}
.cta-banner .btn-cta{display:inline-flex;align-items:center;gap:8px;background:#fff;color:var(--primary);padding:16px 36px;border-radius:50px;font-size:18px;font-weight:700;box-shadow:var(--shadow-lg);transition:all var(--transition)}
.cta-banner .btn-cta:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(0,0,0,.2)}

/* === Footer === */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,.75);padding:48px 0 0;margin-top:60px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;max-width:var(--container);margin:0 auto;padding:0 20px}
.footer-col h3{color:#fff;font-size:16px;font-weight:600;margin-bottom:16px}
.footer-col p,.footer-col a{font-size:14px;line-height:2;color:rgba(255,255,255,.6)}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:32px;padding:20px;text-align:center;font-size:13px;color:rgba(255,255,255,.4)}
.footer-bottom a{color:rgba(255,255,255,.5)}
.footer-bottom a:hover{color:#fff}

@media (max-width:768px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
}
@media (max-width:480px){
  .footer-grid{grid-template-columns:1fr}
}

/* === QA === */
.qa-list-item{padding:20px 0;border-bottom:1px solid var(--border-light)}
.qa-list-item:last-child{border-bottom:none}
.qa-list-item .q{display:flex;align-items:flex-start;gap:12px;margin-bottom:6px}
.qa-list-item .q-tag{background:var(--primary);color:#fff;border-radius:6px;padding:2px 10px;font-size:13px;font-weight:700;flex-shrink:0}
.qa-list-item h3{font-size:17px;font-weight:600;line-height:1.5}
.qa-list-item h3 a{color:var(--text)}
.qa-list-item h3 a:hover{color:var(--primary)}
.qa-list-item .qa-meta{font-size:12px;color:var(--text-muted);margin-top:4px}

/* === Search === */
.search-box{background:var(--bg-card);border-radius:var(--radius-lg);padding:40px;margin:24px 0;text-align:center;box-shadow:var(--shadow-sm)}
.search-box form{display:flex;gap:8px;max-width:500px;margin:0 auto}
.search-box input{flex:1;padding:14px 20px;border:2px solid var(--border);border-radius:50px;font-size:16px;outline:none;transition:border-color var(--transition)}
.search-box input:focus{border-color:var(--primary)}
.search-box button{padding:14px 28px;background:var(--primary);color:#fff;border:none;border-radius:50px;font-size:16px;font-weight:600;cursor:pointer;transition:all var(--transition)}
.search-box button:hover{background:var(--primary-light)}
.search-result-highlight{background:#fef3c7;color:var(--accent-dark);padding:1px 4px;border-radius:3px;font-weight:600}

/* === About / Contact === */
.about-features{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:32px 0}
.about-feature{text-align:center;padding:24px 16px;background:var(--bg);border-radius:var(--radius)}
.about-feature .icon{font-size:32px;margin-bottom:8px}
.about-feature h3{font-size:16px;font-weight:600;margin-bottom:4px}
.about-feature p{font-size:13px;color:var(--text-secondary)}

.contact-methods{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:24px 0}
.contact-method{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-align:center;box-shadow:var(--shadow-sm)}
.contact-method .icon{font-size:32px;margin-bottom:12px}
.contact-method h3{font-size:16px;font-weight:600;margin-bottom:6px}
.contact-method p{font-size:14px;color:var(--text-secondary)}

@media (max-width:768px){
  .about-features{grid-template-columns:repeat(2,1fr)}
  .contact-methods{grid-template-columns:1fr}
}
@media (max-width:480px){
  .about-features{grid-template-columns:1fr}
}

/* === Float CTA (mobile) === */
.float-cta{display:none;position:fixed;bottom:0;left:0;right:0;background:var(--bg-card);border-top:1px solid var(--border);padding:10px 16px;z-index:99;box-shadow:0 -2px 12px rgba(0,0,0,.08)}
.float-cta .btns{display:flex;gap:10px}
.float-cta .btns a{flex:1;text-align:center;padding:12px;border-radius:50px;font-size:15px;font-weight:600}
.float-cta .btn-tel{background:var(--bg);color:var(--text);border:1.5px solid var(--border)}
.float-cta .btn-call{background:linear-gradient(135deg,var(--accent),var(--accent-light));color:#fff}

@media (max-width:768px){.float-cta{display:block}}

/* === 404 === */
.page-404{text-align:center;padding:80px 0}
.page-404 h1{font-size:80px;font-weight:800;color:var(--primary);line-height:1}
.page-404 p{font-size:18px;color:var(--text-secondary);margin:16px 0 32px}
.page-404 a{display:inline-flex;align-items:center;gap:8px;background:var(--primary);color:#fff;padding:14px 32px;border-radius:50px;font-weight:600}
.page-404 a:hover{background:var(--primary-light);color:#fff}

/* === Utility === */
.text-center{text-align:center}
.mt-sm{margin-top:12px}
.mt-md{margin-top:24px}
.mt-lg{margin-top:40px}
.mb-sm{margin-bottom:12px}
.mb-md{margin-bottom:24px}
.text-accent{color:var(--accent)}
.text-muted{color:var(--text-muted)}
.text-sm{font-size:14px}

/* === Animations === */
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.animate-in{animation:fadeInUp .5s ease-out}

/* === Table of Contents (detail page) === */
.toc{background:var(--bg);border-radius:var(--radius);padding:20px 24px;margin:20px 0}
.toc h4{font-size:14px;color:var(--text-muted);margin-bottom:10px;text-transform:uppercase;letter-spacing:1px}
.toc ul{padding-left:0}
.toc li{margin-bottom:4px}
.toc a{display:block;padding:6px 8px;border-radius:6px;font-size:14px;color:var(--text-secondary)}
.toc a:hover{background:rgba(30,64,175,.06);color:var(--primary)}