:root{
  --bg:#F5F9FE;--surface:#FFFFFF;--soft:#E8F2FC;--softer:#F3F8FF;--blue:#2F7BFF;
  --blue-deep:#1E5FD6;--title:#16324F;--text:#243447;--muted:#5B6B7C;--hint:#7A8896;
  --line:rgba(47,123,255,.16);--shadow:0 12px 32px rgba(22,50,79,.08);--footer:#10243A;
}
*{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","Hiragino Sans GB","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{font:inherit}
button{cursor:pointer}
main{min-height:60vh}
.container{width:min(1220px,calc(100% - 36px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:9999;background:rgba(245,249,254,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.topbar-inner{height:72px;width:min(1240px,calc(100% - 28px));margin:auto;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:22px}
.brand-logo img{width:auto;height:42px;max-width:170px}
.core-nav{justify-self:center;display:flex;gap:6px;padding:5px;background:#fff;border:1px solid var(--line);border-radius:999px;box-shadow:0 6px 22px rgba(22,50,79,.05);white-space:nowrap}
.core-nav a{padding:8px 14px;border-radius:999px;color:var(--title);font-size:14px;font-weight:600}
.core-nav a.active,.core-nav a:hover{background:var(--soft);color:var(--blue-deep)}
.top-actions{display:flex;align-items:center;gap:8px;white-space:nowrap}
.overview-btn,.login-btn,.register-btn,.main-btn{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 17px;border-radius:999px;font-weight:700;font-size:14px}
.overview-btn{border:1px solid var(--line);background:var(--softer);color:var(--title)}
.login-btn,.main-btn{background:var(--blue);color:#fff;border:1px solid var(--blue)}
.register-btn{background:#fff;color:var(--title);border:1px solid #C5D7F0}
.login-btn:hover,.main-btn:hover{background:var(--blue-deep)}
.mobile-menu-btn,.mobile-login{display:none}

.section{padding:64px 0}
.section-tight{padding:42px 0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:12px;padding:6px 11px;border-radius:999px;background:var(--soft);color:var(--blue-deep);font-size:13px;font-weight:700}
h1,h2,h3{color:var(--title);line-height:1.28;margin:0 0 14px}
h1{font-size:clamp(34px,4.2vw,56px);letter-spacing:-.02em}
h2{font-size:clamp(26px,3vw,36px)}
h3{font-size:19px}
p{margin:0 0 14px}
.muted{color:var(--muted)}
.lead{font-size:18px;color:#405367}
.card{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:18px}
.hero{padding:54px 0 34px;position:relative;overflow:hidden}
.hero:before,.hero:after{content:"";position:absolute;border-radius:50%;filter:blur(5px);pointer-events:none}
.hero:before{width:260px;height:260px;background:rgba(47,123,255,.08);left:-80px;top:30px}
.hero:after{width:320px;height:320px;background:rgba(95,168,255,.08);right:-120px;bottom:-120px}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:42px;align-items:center}
.hero-copy{padding:16px 0}
.hero-copy .lead{max-width:700px}
.hero-actions{display:flex;gap:10px;margin:24px 0}
.hero-media{padding:18px}
.hero-media img{width:100%;height:auto;border-radius:12px}
.summary-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:24px}
.summary-item{padding:14px;border-radius:14px;background:var(--softer);border:1px solid var(--line)}
.summary-item strong{display:block;color:var(--title);font-size:15px}.summary-item span{color:var(--muted);font-size:13px}
.quick-scroll{display:flex;gap:12px;overflow-x:auto;padding:4px 2px 12px;scroll-snap-type:x proximity}
.quick-scroll::-webkit-scrollbar{height:8px}.quick-scroll::-webkit-scrollbar-thumb{background:#C9DDF8;border-radius:99px}
.quick-card{min-width:220px;scroll-snap-align:start;padding:18px}
.quick-card .num{font-size:12px;color:var(--blue-deep);font-weight:800}.quick-card h3{font-size:17px;margin:6px 0}.text-link{color:var(--blue-deep);font-weight:700;font-size:14px}
.info-strip{display:grid;grid-template-columns:auto 1fr;gap:24px;align-items:center;padding:22px}
.info-strip img{width:220px;max-height:120px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.feature-card{padding:24px;min-height:240px;display:flex;flex-direction:column;justify-content:space-between}
.feature-card .meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}.chip{padding:5px 9px;background:var(--softer);border:1px solid var(--line);border-radius:999px;font-size:12px;color:var(--blue-deep)}
.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.topic-card{overflow:hidden}.topic-card .img-box{padding:14px;background:var(--softer);border-bottom:1px solid var(--line)}
.topic-card .img-box img{width:100%;height:150px;object-fit:contain}.topic-card .content{padding:16px}
.banner-card{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px;align-items:center;padding:24px}
.banner-card img{width:100%;max-height:260px}
.news-pair{display:grid;grid-template-columns:1fr 1fr;gap:18px}.news-card{overflow:hidden}.news-card img{width:100%;height:auto;max-height:220px}.news-card .content{padding:18px}
.safety-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}.safety-copy{padding:24px}.safety-media{padding:18px}.safety-media img{width:100%;max-height:260px}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.review{padding:20px}.review strong{display:block;color:var(--title);margin-bottom:8px}
.faq-list{display:grid;gap:12px}.faq-item{padding:18px 20px}.faq-item h3{font-size:17px;margin-bottom:8px}.faq-item p{color:var(--muted);margin:0}
.notice{padding:22px;background:#EAF3FF;border:1px solid var(--line);border-radius:18px}.notice h2{font-size:24px}.notice p:last-child{margin-bottom:0}
.page-hero{padding:52px 0 24px}.page-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:30px;align-items:center}.page-hero .card{padding:18px}.page-hero img{width:100%;max-height:300px}
.content-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.content-card{padding:24px}.content-card p{color:#46586a}
.steps{counter-reset:step;display:grid;gap:12px}.step{padding:18px;display:grid;grid-template-columns:44px 1fr;gap:14px;align-items:flex-start}.step:before{counter-increment:step;content:counter(step);width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--soft);color:var(--blue-deep);font-weight:800}
.feedback-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.feedback{padding:18px}.feedback p{color:var(--muted);margin:0}
.page-links{display:flex;gap:10px;flex-wrap:wrap}.page-links a{padding:8px 12px;border-radius:999px;background:var(--softer);border:1px solid var(--line);color:var(--blue-deep);font-size:14px;font-weight:700}
.site-footer{background:#10243A;color:#D7E6F5;margin-top:40px;padding:44px 0 26px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:28px}.footer-brand img{height:42px;width:auto;margin-bottom:14px}.site-footer h3{color:#fff;font-size:16px}.site-footer a{display:block;color:#D7E6F5;margin:7px 0}.footer-note{border-top:1px solid rgba(215,230,245,.14);margin-top:28px;padding-top:20px;color:#AFC5DA;font-size:13px}
.drawer-mask{position:fixed;inset:0;background:rgba(16,36,58,.34);z-index:10000;opacity:0;visibility:hidden;transition:.25s}.drawer-mask.show{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;bottom:0;width:min(430px,92vw);background:#fff;z-index:10001;box-shadow:0 18px 50px rgba(22,50,79,.18);transition:transform .28s ease;overflow-y:auto}
.drawer-right{right:0;transform:translateX(105%)}.drawer-left{left:0;transform:translateX(-105%)}.drawer.open{transform:translateX(0)}
.drawer-head{height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;z-index:2}.drawer-head img{height:40px;width:auto}.drawer-head button{border:0;background:var(--soft);color:var(--title);width:38px;height:38px;border-radius:50%;font-size:24px;line-height:1}
.drawer-groups{padding:18px}.drawer-groups section{padding:14px 0;border-bottom:1px solid var(--line)}.drawer-groups h3{font-size:15px;margin-bottom:10px}.drawer-groups a{display:inline-flex;margin:5px 8px 5px 0;padding:7px 10px;background:var(--softer);border-radius:10px;color:var(--muted);font-size:14px}
.mobile-menu-list{padding:12px 18px 32px;display:grid;grid-template-columns:1fr 1fr;gap:8px}.mobile-menu-list a{padding:10px 12px;background:var(--softer);border:1px solid var(--line);border-radius:10px;color:var(--title)}
.mobile-bottom{display:none}

@media(max-width:1020px){
  .topbar-inner{gap:12px}.core-nav a{padding:7px 10px}.overview-btn{display:none}
  .topic-grid{grid-template-columns:repeat(3,1fr)}.review-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}
  .footer-grid>div:nth-child(4){display:none}
}
@media(max-width:900px){
  body{padding-bottom:70px}.site-header{height:64px}.topbar-inner{height:64px;grid-template-columns:1fr auto 1fr;width:calc(100% - 22px)}
  .core-nav,.top-actions{display:none}.mobile-menu-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:12px;color:var(--title);font-size:20px}
  .mobile-login{display:inline-flex;justify-self:end;min-height:38px;padding:0 15px}.brand-logo{justify-self:center}.brand-logo img{height:38px;max-width:150px}
  .hero{padding-top:34px}.hero-grid,.page-hero-grid,.banner-card,.safety-grid{grid-template-columns:1fr}.hero-copy{text-align:center}.hero-actions{justify-content:center}.summary-grid{grid-template-columns:1fr 1fr;text-align:left}
  .two-col,.news-pair,.content-grid{grid-template-columns:1fr}.topic-grid{grid-template-columns:repeat(2,1fr)}.feedback-row{grid-template-columns:1fr}.info-strip{grid-template-columns:1fr}.info-strip img{width:100%;max-height:170px}.review-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}
  .mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;left:0;right:0;bottom:0;z-index:9998;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-top:1px solid var(--line);padding:8px max(8px,env(safe-area-inset-right)) calc(8px + env(safe-area-inset-bottom)) max(8px,env(safe-area-inset-left));box-shadow:0 -8px 28px rgba(22,50,79,.08)}
  .mobile-bottom a{text-align:center;padding:8px 4px;color:var(--title);font-size:13px;font-weight:700}
}
@media(max-width:620px){
  .container{width:min(100% - 24px,1220px)}.section{padding:48px 0}.section-tight{padding:34px 0}
  h1{font-size:34px}.lead{font-size:16px}.hero-media{padding:10px}.summary-grid{grid-template-columns:1fr 1fr;gap:8px}.summary-item{padding:11px}
  .topic-grid{gap:12px}.topic-card .img-box img{height:115px}.topic-card .content{padding:13px}.topic-card h3{font-size:16px}.topic-card p{font-size:13px}
  .page-hero{padding-top:34px}.content-card{padding:19px}.banner-card{padding:18px}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.site-footer{padding-top:34px}
}