/* 人工智能训练师考务中心 - SEO 落地页样式 v4 */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Inter','Microsoft YaHei','PingFang SC',system-ui,sans-serif;color:#374151;background:#f9fafb;line-height:1.7;font-size:15px}
a{color:#2563eb;text-decoration:none}
a:hover{color:#1d4ed8;text-decoration:underline}
.container{max-width:1120px;margin:0 auto;padding:0 16px}
.header{background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.06);position:sticky;top:0;z-index:50}
.header-inner{max-width:1120px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;color:#374151;text-decoration:none}
.brand-logo{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,#2563eb,#60a5fa);display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0}
.brand-name{font-size:16px;font-weight:600}
.btn{display:inline-flex;align-items:center;gap:8px;padding:9px 18px;border-radius:9px;font-size:14px;font-weight:500;transition:all .3s cubic-bezier(.4,0,.2,1)}
.btn-primary{background:#2563eb;color:#fff}
.btn-primary:hover{background:#1d4ed8;text-decoration:none}
.hero{background:linear-gradient(135deg,#1d4ed8,#60a5fa);color:#fff;padding:40px 0 36px;margin-bottom:24px}
.hero .crumbs{font-size:13px;margin-bottom:14px;color:#dbeafe}
.hero .crumbs a{color:#dbeafe}
.hero .crumbs a:hover{color:#fff}
.hero h1{font-size:28px;line-height:1.4;margin-bottom:12px;color:#fff}
.hero .lead{font-size:15px;color:#eff6ff;max-width:760px;margin-bottom:18px}
.hero .btn-white{background:#fff;color:#2563eb}
.hero .btn-white:hover{background:#eff6ff;text-decoration:none}
.hero .btn-line{border:1.5px solid #fff;color:#fff;margin-left:12px}
.hero .btn-line:hover{background:rgba(255,255,255,.15);text-decoration:none}
.quick-nav{background:#fff;border-radius:14px;box-shadow:0 4px 6px -1px rgba(0,0,0,.06);padding:18px 20px;margin-bottom:24px}
.quick-nav .qn-title{font-size:14px;font-weight:600;color:#111827;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.quick-nav .qn-title .fa{color:#f97316}
.quick-nav .qn-list{display:flex;flex-wrap:wrap;gap:10px}
.quick-nav a{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#374151;background:#f9fafb;border:1px solid #f3f4f6;border-radius:10px;padding:8px 14px;transition:all .3s}
.quick-nav a:hover{background:#eff6ff;border-color:#bfdbfe;color:#2563eb;text-decoration:none}
.quick-nav a .fa{color:#2563eb}
.main{padding:0 0 48px}
.article{background:#fff;border-radius:14px;box-shadow:0 4px 6px -1px rgba(0,0,0,.06);padding:28px;max-width:820px}
h1{font-size:26px;line-height:1.4;margin-bottom:14px;color:#111827}
h2{font-size:19px;margin:26px 0 12px;color:#111827;padding-left:12px;border-left:4px solid #2563eb}
h3{font-size:16px;color:#111827}
p{margin-bottom:12px}
.overview{background:#f0fdf4;border:1px solid #bbf7d0;border-radius:12px;padding:16px 18px;margin:16px 0}
.overview h2{margin:0 0 10px;font-size:15px;color:#166534;border:none;padding:0}
.overview ul{list-style:none}
.overview li{font-size:13px;color:#374151;padding:4px 0;display:flex;gap:8px}
.overview li .fa{color:#10b981;width:14px;text-align:center}
ul.facts{list-style:none;margin:0 0 8px}
ul.facts li{font-size:13px;color:#374151;padding:6px 0;border-bottom:1px dashed #e5e7eb;display:flex;gap:6px}
ul.facts li:last-child{border-bottom:none}
ul.facts strong{color:#0f766e;white-space:nowrap}
.points{background:#eff6ff;border:1px solid #dbeafe;border-radius:12px;padding:14px 18px;margin:0 0 18px}
.points h2{margin:0 0 8px;font-size:15px;color:#1e40af;border:none;padding:0}
.points li{font-size:13px;color:#1e40af;padding:3px 0}
.notice{background:#eff6ff;border:1px solid #dbeafe;border-radius:10px;padding:14px 16px;font-size:14px;color:#1e40af;margin:16px 0}
.notice .fa{color:#2563eb}
.city-tip{background:#fff7ed;border:1px solid #fed7aa;border-radius:10px;padding:14px 16px;font-size:14px;color:#7c2d12;margin:16px 0}
.city-tip .fa{color:#f97316;margin-right:6px}
.local-note{font-size:13px;color:#6b7280;border-left:3px solid #f97316;padding-left:10px;margin:14px 0}
.faq{margin-top:26px}
.faq h2{margin-top:0}
.faq details{background:#f9fafb;border:1px solid #f3f4f6;border-radius:10px;padding:14px 16px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:600;color:#1f2937;display:flex;justify-content:space-between;align-items:center;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq details[open] summary .fa-angle-down{transform:rotate(180deg)}
.faq .a{margin-top:10px;color:#4b5563;font-size:14px}
.faq .fa{color:#2563eb;transition:transform .3s}
.cta{background:linear-gradient(135deg,#2563eb,#60a5fa);border-radius:14px;padding:26px;color:#fff;margin-top:28px;text-align:center}
.cta h3{font-size:18px;margin-bottom:8px;color:#fff}
.cta p{font-size:14px;color:#eff6ff;margin-bottom:16px}
.cta .btn-white{background:#fff;color:#2563eb}
.cta .btn-white:hover{background:#eff6ff;text-decoration:none}
.cta .btn-line{border:1.5px solid #fff;color:#fff;margin-left:12px}
.cta .btn-line:hover{background:rgba(255,255,255,.15);text-decoration:none}
.official-bar{background:#fff;border:1px solid #e5e7eb;border-left:4px solid #10b981;border-radius:12px;padding:16px 20px;margin-bottom:24px}
.official-bar .ob-title{font-size:14px;font-weight:600;color:#111827;margin-bottom:10px}
.official-bar .ob-title .fa{color:#10b981;margin-right:6px}
.official-bar .ob-list{display:flex;flex-wrap:wrap;gap:10px}
.official-bar .ob-list a{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:#065f46;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:8px;padding:6px 12px;transition:all .3s}
.official-bar .ob-list a:hover{background:#dcfce7;text-decoration:none}
.official-bar .ob-note{font-size:12px;color:#6b7280;margin:10px 0 0}
.related{margin-top:24px;background:#fff;border-radius:14px;box-shadow:0 4px 6px -1px rgba(0,0,0,.06);padding:22px 28px;max-width:820px}
.related h3{font-size:16px;margin-bottom:14px}
.related ul{list-style:none}
.related li{padding:8px 0;border-bottom:1px solid #f9fafb;font-size:14px}
.related li:last-child{border-bottom:none}
.related .fa{color:#f97316;margin-right:8px}
.footer{background:linear-gradient(135deg,#1f2937,#111827);color:#9ca3af;padding:40px 0 24px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:28px}
.footer h3{font-size:16px;color:#e5e7eb;margin-bottom:24px}
.footer p{font-size:13px;line-height:1.8}
.footer ul{list-style:none}
.footer li{margin-bottom:10px;font-size:13px}
.footer a{color:#9ca3af}
.footer a:hover{color:#60a5fa}
.footer-bottom{border-top:1px solid #374151;padding-top:20px;text-align:center;font-size:12px}
.footer-bottom a{color:#9ca3af}
.footer-bottom .icp{margin-top:4px}
#backTop{position:fixed;bottom:24px;right:24px;width:44px;height:44px;border-radius:50%;background:#2563eb;color:#fff;border:none;cursor:pointer;display:none;align-items:center;justify-content:center;box-shadow:0 4px 6px -1px rgba(0,0,0,.1);z-index:99}
#backTop.show{display:flex}
@media (max-width:768px){
 .footer-grid{grid-template-columns:repeat(2,1fr)}
 .article{padding:20px}
 .hero h1{font-size:22px}
 .hero .btn-line{margin-left:0;margin-top:10px}
 .header-actions .btn{font-size:13px;padding:8px 12px}
}
@media (max-width:480px){
 .footer-grid{grid-template-columns:1fr}
 .brand-name{font-size:14px}
}