:root{
  --bg:#F5F9FE;
  --surface:#FFFFFF;
  --soft:#E8F2FC;
  --soft2:#F3F8FF;
  --blue:#2F7BFF;
  --blue-dark:#1E5FD6;
  --title:#16324F;
  --text:#243447;
  --muted:#5B6B7C;
  --note:#7A8896;
  --line:rgba(47,123,255,0.16);
  --shadow:0 12px 32px rgba(22,50,79,0.08);
  --footer:#10243A;
  --footer-text:#D7E6F5;
  --radius:18px;
  --content:1220px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75}
body.drawer-open{overflow:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;object-fit:contain;display:block}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
.site-header{position:sticky;top:0;z-index:9999;background:rgba(245,249,254,0.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(47,123,255,.08)}
.header-inner{height:72px;max-width:var(--content);margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:18px}
.brand-logo{display:flex;align-items:center;flex:0 0 auto}
.brand-logo img{height:40px;width:auto;max-width:158px}
.core-nav{display:flex;align-items:center;gap:6px;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:5px;box-shadow:0 8px 20px rgba(22,50,79,.05);white-space:nowrap}
.core-nav a{padding:8px 13px;border-radius:999px;color:var(--title);font-size:14px}
.core-nav a:hover,.core-nav a.active{background:var(--soft);color:var(--blue)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:9px;white-space:nowrap}
.overview-btn{border:0;background:transparent;color:var(--title);padding:9px 8px}
.login-btn,.register-btn,.main-btn{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 18px;border-radius:999px;font-weight:700}
.login-btn,.main-btn{background:var(--blue);color:#fff;border:1px solid var(--blue)}
.login-btn:hover,.main-btn:hover{background:var(--blue-dark)}
.register-btn{background:#fff;color:var(--title);border:1px solid #C5D7F0}
.mobile-menu-btn,.mobile-login{display:none}
main{min-height:60vh}
.section{max-width:var(--content);margin:0 auto;padding:60px 20px}
.section.compact{padding-top:34px;padding-bottom:34px}
.section-title{display:flex;justify-content:space-between;gap:18px;align-items:flex-end;margin-bottom:24px}
.section-title h2{margin:0;color:var(--title);font-size:30px;line-height:1.25}
.section-title p{margin:6px 0 0;color:var(--muted);max-width:760px}
.eyebrow{display:inline-flex;padding:6px 11px;border-radius:999px;background:var(--soft);color:var(--blue-dark);font-size:13px;font-weight:800;letter-spacing:.02em}
.card{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:var(--radius)}
.hero{max-width:var(--content);margin:0 auto;padding:68px 20px 42px;position:relative}
.hero:before{content:"";position:absolute;right:8%;top:20px;width:320px;height:320px;background:radial-gradient(circle,rgba(47,123,255,.14),rgba(47,123,255,0) 68%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:34px;align-items:center}
.hero-copy{position:relative;z-index:1}
.hero-copy h1{margin:14px 0 18px;font-size:48px;line-height:1.18;color:var(--title);letter-spacing:-.02em}
.hero-copy p{margin:0 0 22px;color:var(--muted);font-size:17px}
.hero-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.hero-visual{padding:18px;overflow:hidden}
.hero-visual img{width:100%;height:auto;object-fit:contain}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:28px}
.stat{padding:16px}
.stat strong{display:block;color:var(--title);margin-bottom:4px}
.stat span{color:var(--muted);font-size:13px}
.quick-scroll{display:flex;gap:12px;overflow-x:auto;padding:4px 2px 10px;scrollbar-width:thin}
.quick-card{min-width:220px;padding:18px}
.quick-card b{display:inline-flex;width:28px;height:28px;border-radius:8px;align-items:center;justify-content:center;background:var(--soft);color:var(--blue);font-size:12px}
.quick-card h3{margin:12px 0 7px;color:var(--title);font-size:17px}
.quick-card p{margin:0;color:var(--muted);font-size:14px}
.strip{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:16px}
.strip>div{padding:20px}
.strip strong{display:block;color:var(--title);font-size:18px;margin-bottom:4px}
.strip span{color:var(--muted);font-size:14px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.content-card{padding:26px}
.content-card h2,.content-card h3{color:var(--title);margin-top:0}
.content-card p:last-child{margin-bottom:0}
.media-card{display:grid;grid-template-columns:1fr 1fr;overflow:hidden}
.media-card .media-copy{padding:30px}
.media-card .media-box{background:var(--soft2);display:flex;align-items:center;justify-content:center;padding:18px}
.media-card .media-box img{width:100%;height:auto;object-fit:contain}
.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.topic-card{overflow:hidden}
.topic-card .topic-img{padding:14px;background:var(--soft2);min-height:142px;display:flex;align-items:center;justify-content:center}
.topic-card .topic-img img{width:100%;height:auto;object-fit:contain}
.topic-card .topic-copy{padding:18px}
.topic-card h3{margin:0 0 6px;color:var(--title);font-size:18px}
.topic-card p{margin:0 0 10px;color:var(--muted);font-size:14px}
.text-link{color:var(--blue-dark);font-weight:700}
.banner{display:grid;grid-template-columns:1.05fr .95fr;overflow:hidden;align-items:center}
.banner-copy{padding:34px}
.banner-copy h2{margin:10px 0 10px;color:var(--title);font-size:30px}
.banner-copy p{color:var(--muted)}
.banner-image{padding:18px;background:var(--soft2)}
.banner-image img{width:100%;height:auto}
.image-news{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.image-news article{overflow:hidden}
.image-news .img-wrap{padding:14px;background:var(--soft2)}
.image-news .img-wrap img{width:100%;height:auto}
.image-news .copy{padding:22px}
.image-news h3{margin:0 0 8px;color:var(--title)}
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.info-grid .card{padding:22px}
.info-grid h3{margin-top:0;color:var(--title)}
.feedback-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feedback{padding:22px}
.feedback p{margin:0;color:var(--text)}
.feedback small{display:block;margin-top:12px;color:var(--note)}
.faq-list{display:grid;gap:12px}
.faq-item{padding:20px 22px}
.faq-item h3{margin:0 0 8px;color:var(--title);font-size:17px}
.faq-item p{margin:0;color:var(--muted)}
.notice{padding:22px;background:var(--soft2);border:1px solid var(--line);border-radius:var(--radius)}
.notice strong{color:var(--title)}
.page-hero{max-width:var(--content);margin:0 auto;padding:56px 20px 28px}
.page-hero .inner{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(280px,.9fr);gap:28px;align-items:center;padding:30px}
.page-hero h1{margin:12px 0 10px;color:var(--title);font-size:42px;line-height:1.2}
.page-hero p{margin:0;color:var(--muted);font-size:17px}
.page-hero .hero-thumb{background:var(--soft2);padding:14px;border-radius:14px;min-height:220px;display:flex;align-items:center;justify-content:center}
.page-hero .hero-thumb img{width:100%;height:auto;max-height:280px}
.prose{display:grid;gap:22px}
.prose .card{padding:28px}
.prose h2{margin:0 0 12px;color:var(--title);font-size:25px}
.prose p{margin:0 0 13px}
.prose ul{margin:10px 0 0;padding-left:20px}
.prose li{margin:7px 0}
.link-list{display:flex;flex-wrap:wrap;gap:10px}
.link-list a{padding:9px 13px;border-radius:999px;background:var(--soft2);border:1px solid var(--line);color:var(--title)}
.link-list a:hover{color:var(--blue)}
.site-footer{background:var(--footer);color:var(--footer-text);margin-top:42px}
.footer-inner{max-width:var(--content);margin:0 auto;padding:46px 20px;display:grid;grid-template-columns:1.1fr 1fr;gap:48px}
.footer-brand img{height:42px;width:auto;max-width:170px;margin-bottom:16px}
.footer-brand p{max-width:520px;color:#BFD1E2}
.footer-links{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.footer-links h2{font-size:15px;color:#fff;margin:0 0 10px}
.footer-links a{display:block;color:#C8D8E8;margin:7px 0;font-size:14px}
.footer-note{border-top:1px solid rgba(255,255,255,.08);max-width:var(--content);margin:0 auto;padding:18px 20px 26px;color:#AFC2D4;font-size:13px}
.drawer-overlay{position:fixed;inset:0;background:rgba(16,36,58,.36);opacity:0;visibility:hidden;transition:.2s;z-index:10000}
.drawer-overlay.is-open{opacity:1;visibility:visible}
.overview-drawer,.mobile-drawer{position:fixed;top:0;bottom:0;background:#fff;z-index:10001;box-shadow:-18px 0 60px rgba(16,36,58,.18);overflow-y:auto;transition:transform .24s ease}
.overview-drawer{right:0;width:min(520px,94vw);transform:translateX(102%);padding:18px 20px 30px}
.overview-drawer.is-open{transform:translateX(0)}
.mobile-drawer{left:0;width:min(360px,90vw);transform:translateX(-102%);padding:16px 18px 28px}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:12px;margin-bottom:16px}
.drawer-brand img{height:38px;width:auto;max-width:160px}
.drawer-close{border:0;background:var(--soft2);color:var(--title);border-radius:10px;width:38px;height:38px;font-size:24px}
.drawer-groups{display:grid;gap:18px}
.drawer-groups h2{font-size:15px;color:var(--title);margin:0 0 9px}
.drawer-links{display:flex;flex-wrap:wrap;gap:8px}
.drawer-links a{padding:8px 11px;border-radius:10px;background:var(--soft2);color:var(--muted);font-size:14px}
.mobile-list{display:grid;gap:8px}
.mobile-list strong{margin-top:10px;color:var(--title);font-size:14px}
.mobile-list a{padding:11px 12px;border-radius:10px;background:var(--soft2);color:var(--text)}
.mobile-bottom-nav{display:none}

@media (max-width:1060px){
  .core-nav a{padding:8px 10px}
  .header-inner{gap:12px;padding:0 14px}
  .brand-logo img{height:36px;max-width:138px}
  .overview-btn{padding:8px 3px}
  .login-btn,.register-btn{padding:0 14px}
  .topic-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:900px){
  .core-nav,.header-actions{display:none}
  .mobile-menu-btn,.mobile-login{display:inline-flex}
  .mobile-menu-btn{align-items:center;justify-content:center;width:42px;height:42px;border:0;background:var(--soft2);color:var(--title);border-radius:12px;font-size:22px}
  .mobile-login{margin-left:auto}
  .brand-logo{position:absolute;left:50%;transform:translateX(-50%)}
  .header-inner{position:relative;justify-content:space-between}
  .hero-grid,.banner,.media-card,.page-hero .inner{grid-template-columns:1fr}
  .hero-copy h1{font-size:40px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .strip{grid-template-columns:1fr}
  .topic-grid{grid-template-columns:repeat(3,1fr)}
  .info-grid,.feedback-grid{grid-template-columns:1fr 1fr}
  .footer-inner{grid-template-columns:1fr}
}
@media (max-width:680px){
  body{padding-bottom:64px}
  .section{padding:44px 16px}
  .section.compact{padding:26px 16px}
  .header-inner{height:68px;padding:0 12px}
  .brand-logo img{height:34px;max-width:132px}
  .mobile-login{min-height:38px;padding:0 14px}
  .hero{padding:44px 16px 26px}
  .hero-copy h1{font-size:34px}
  .hero-copy p{font-size:16px}
  .hero-visual{padding:12px}
  .hero-stats{grid-template-columns:1fr 1fr}
  .section-title{align-items:flex-start;flex-direction:column}
  .section-title h2{font-size:26px}
  .two-col,.image-news,.info-grid,.feedback-grid{grid-template-columns:1fr}
  .topic-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .topic-card .topic-img{min-height:110px;padding:10px}
  .topic-card .topic-copy{padding:14px}
  .topic-card h3{font-size:16px}
  .page-hero{padding:34px 16px 18px}
  .page-hero .inner{padding:22px}
  .page-hero h1{font-size:32px}
  .page-hero .hero-thumb{min-height:150px}
  .prose .card{padding:22px}
  .footer-inner{padding:36px 16px;gap:26px}
  .footer-links{grid-template-columns:1fr 1fr}
  .footer-note{padding:16px 16px 22px}
  .mobile-bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:9998;height:58px;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(4,1fr)}
  .mobile-bottom-nav a{display:flex;align-items:center;justify-content:center;color:var(--title);font-size:13px;font-weight:700}
}