*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:#222;background:#F6F8FF;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8;overflow-x:hidden}body.drawer-open{overflow:hidden}a{color:#315EDB}img{max-width:100%}button,input,select,textarea{font:inherit}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:16px;top:16px;z-index:20000;background:#fff;padding:8px 12px;border-radius:8px}.site-header{position:sticky;top:0;z-index:9999;width:100%;background:linear-gradient(135deg,#F7F9FF 0%,#ECF0FF 52%,#EAF7FF 100%);box-shadow:0 8px 24px rgba(89,126,247,.10);backdrop-filter:blur(12px)}.header-inner{max-width:1200px;min-height:72px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}.site-logo{display:flex;align-items:center;flex:0 0 auto;text-decoration:none}.site-logo 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a{color:#5B647A;text-decoration:none;font-size:14px}.channel-inner a:hover{color:#597EF7}.mobile-drawer,.drawer-mask{display:none}.site-main{min-height:60vh}.page-wrap{max-width:1200px;margin:0 auto;padding:48px 20px 78px}.page-wrap.narrow{max-width:920px}.hero-title{max-width:880px;margin:0 auto 34px;text-align:center}.eyebrow{display:inline-block;margin-bottom:10px;color:#597EF7;font-weight:800;letter-spacing:.08em}h1,h2,h3{color:#1D2B5F;line-height:1.28;margin-top:0}h1{font-size:clamp(38px,5vw,50px);margin-bottom:18px}h2{font-size:clamp(26px,3vw,34px);margin-bottom:14px}h3{font-size:20px;margin-bottom:8px}p{margin:0 0 16px}.lead{font-size:18px;color:#46516D;line-height:1.9}.muted{color:#5B647A}.section{margin-top:64px}.section.tight{margin-top:42px}.panel{background:#fff;border:1px solid rgba(89,126,247,.16);border-radius:18px;box-shadow:0 16px 40px rgba(89,126,247,.10);padding:26px}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.story-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center}.story-grid.reverse{grid-template-columns:.95fr 1.05fr}.story-grid.reverse .media{order:2}.reading{max-width:840px;margin-left:auto;margin-right:auto}.reading p,.reading li{font-size:17px}.reading ul,.reading ol{padding-left:1.3em}.link-list{display:grid;gap:10px}.link-list a{display:block;padding:11px 14px;border-radius:12px;background:#F6F8FF;text-decoration:none;color:#1D2B5F;font-weight:700}.kicker-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.pill{display:inline-flex;align-items:center;min-height:38px;padding:0 14px;border-radius:999px;background:#fff;border:1px solid rgba(89,126,247,.16);text-decoration:none;color:#1D2B5F;font-weight:700}.note{border-left:4px solid #597EF7;background:#ECF0FF;border-radius:0 16px 16px 0;padding:18px 20px;color:#33405F}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:16px;background:#ECF0FF;aspect-ratio:16/9}.media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}.media.large{min-height:220px;max-height:260px}.media.small{min-height:160px;max-height:184px}.media-placeholder{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#6D7893;font-weight:700;text-align:center;padding:20px}.step-list{counter-reset:step;display:grid;gap:14px;margin:0;padding:0;list-style:none}.step-list li{counter-increment:step;background:#fff;border:1px solid rgba(89,126,247,.16);border-radius:16px;padding:18px 18px 18px 62px;position:relative}.step-list li::before{content:counter(step);position:absolute;left:18px;top:18px;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#ECF0FF;color:#597EF7;font-weight:900}.path-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.path-card{background:#fff;border-radius:16px;border:1px solid rgba(89,126,247,.16);padding:20px}.path-card a{font-weight:800;text-decoration:none}.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.compare>div{background:#fff;border-radius:16px;padding:22px;border:1px solid rgba(89,126,247,.16)}.timeline{display:grid;gap:18px;border-left:2px solid rgba(89,126,247,.22);padding-left:24px}.timeline-item{position:relative}.timeline-item::before{content:"";position:absolute;left:-31px;top:9px;width:12px;height:12px;border-radius:50%;background:#597EF7}.qa-list{display:grid;gap:14px}.qa-item{background:#fff;border:1px solid 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rgba(16,24,39,.18)}.hero-slide{display:none;width:100%;height:360px;padding:18px}.hero-slide.is-active{display:block}.hero-slide .media{height:100%;background:#101827;border-radius:12px}.hero-slide .media-placeholder{color:#D7DCE8;background:#101827}.hero-prev,.hero-next{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.9);color:#1D2B5F;font-size:22px;cursor:pointer}.hero-prev{left:16px}.hero-next{right:16px}.hero-dots{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);display:flex;gap:8px}.hero-dot{width:10px;height:10px;border-radius:50%;border:0;background:rgba(255,255,255,.45);padding:0;cursor:pointer}.hero-dot.is-active{background:#fff}.float-tools{position:fixed;right:16px;top:36%;z-index:8000;width:106px;background:#fff;border:1px solid rgba(89,126,247,.16);box-shadow:0 16px 40px rgba(89,126,247,.12);border-radius:16px;padding:10px;display:flex;flex-direction:column;gap:8px}.float-tools a,.float-tools button{min-height:36px;border-radius:10px;border:0;text-align:center;text-decoration:none;background:#F6F8FF;color:#315EDB;font-size:13px;font-weight:800;display:grid;place-items:center;padding:6px}.float-tools .float-register{height:40px;min-width:0;color:#fff;background:linear-gradient(135deg,#7580EE 0%,#597EF7 48%,#7AC4F5 100%);border-radius:999px}.back-top{cursor:pointer}.site-footer{background:#1F1F1F;color:#D7DCE8}.footer-inner{max-width:1200px;margin:0 auto;padding:54px 20px 30px;display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:36px}.footer-inner h2{color:#fff;font-size:17px;margin-bottom:12px}.footer-inner a{display:block;color:#D7DCE8;text-decoration:none;margin:7px 0}.footer-brand p{max-width:360px;color:#B9C0D0}.footer-logo img{height:40px;width:auto;max-width:168px;object-fit:contain}.footer-bottom{max-width:1200px;margin:0 auto;padding:20px;border-top:1px solid rgba(215,220,232,.14);font-size:13px;color:#AEB6C7}.footer-bottom p{margin:4px 0}.mobile-bottom{display:none}.noscript-nav{display:none}
@media(min-width:1280px){.page-wrap{padding-right:86px}}
@media(max-width:1080px){.nav-core{gap:3px}.nav-core a{padding:8px 7px;font-size:13px}.header-actions{gap:6px}.main-btn{padding:0 16px;min-width:86px}}
@media(max-width:980px){.header-inner{min-height:64px;padding:0 14px;display:grid;grid-template-columns:1fr auto 1fr;gap:10px}.menu-toggle{display:inline-flex;justify-self:start;align-items:center;justify-content:center;flex-direction:column;gap:4px;width:42px;height:42px;border:0;border-radius:12px;background:#fff;box-shadow:0 6px 18px rgba(89,126,247,.10)}.menu-toggle span{display:block;width:19px;height:2px;background:#1D2B5F;border-radius:2px}.site-logo{justify-self:center}.site-logo img{height:36px;max-width:145px}.header-actions,.nav-core{display:none}.mobile-register{display:inline-flex;justify-self:end;height:40px;min-width:92px;padding:0 13px;font-size:14px}.channel-strip{display:none}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);background:#fff;z-index:12000;transform:translateX(-105%);transition:transform .2s ease;box-shadow:18px 0 40px rgba(29,43,95,.18);overflow-y:auto;padding:14px 16px 28px}.mobile-drawer.is-open{transform:translateX(0)}.drawer-mask{display:none;position:fixed;inset:0;background:rgba(16,24,39,.42);z-index:11000;opacity:0;pointer-events:none;transition:opacity .18s ease}.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:12px;border-bottom:1px solid #ECF0FF}.drawer-logo img{height:38px;width:auto;max-width:150px;object-fit:contain}.drawer-close{width:40px;height:40px;border:0;border-radius:12px;background:#F6F8FF;color:#1D2B5F;font-size:26px}.drawer-group{padding:16px 0;border-bottom:1px solid #ECF0FF}.drawer-group strong{display:block;color:#597EF7;margin-bottom:8px}.drawer-group a{display:inline-block;margin:4px 8px 4px 0;padding:7px 9px;border-radius:10px;background:#F6F8FF;color:#1D2B5F;text-decoration:none;font-size:14px}.float-tools{display:none}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:9000;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid rgba(89,126,247,.16);box-shadow:0 -8px 24px rgba(89,126,247,.08)}.mobile-bottom a{text-align:center;text-decoration:none;color:#1D2B5F;font-weight:800;padding:11px 6px calc(11px + env(safe-area-inset-bottom))}.page-wrap{padding:40px 16px 92px}.site-footer{padding-bottom:58px}.footer-inner{grid-template-columns:repeat(2,1fr)}.topic-matrix{grid-template-columns:repeat(3,minmax(0,1fr))}.noscript-nav{display:flex;overflow-x:auto;gap:8px;padding:10px 14px;background:#fff}.noscript-nav a{white-space:nowrap;padding:7px 10px;border-radius:999px;background:#ECF0FF;color:#1D2B5F;text-decoration:none;font-weight:700}}
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@media(max-width:390px){.header-inner{padding:0 10px}.site-logo img{height:32px;max-width:128px}.logo-placeholder{min-width:108px;height:36px;padding:0 10px;font-size:14px}.mobile-register{min-width:82px;padding:0 10px;font-size:13px}.menu-toggle{width:40px;height:40px}}




/* 首页专题矩阵：每个专题显示对应图片 */
.topic-card-with-image{
  padding:0;
  overflow:hidden;
  display:block;
  background:#fff;
}
.topic-media{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16/9;
  background:#ECF0FF;
  overflow:hidden;
  border-bottom:1px solid rgba(89,126,247,.14);
}
.topic-media img{
  display:block;
  width:100%;
  height:100%;
  object-fit:contain;
  object-position:center center;
  background:#ECF0FF;
}
.topic-image-placeholder{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:16px;
  background:linear-gradient(135deg,#ECF0FF,#EAF7FF);
  color:#1D2B5F;
  font-weight:800;
  text-align:center;
}
.topic-copy{
  display:block;
  padding:16px 18px 18px;
}
.topic-copy strong{
  display:block;
  margin-bottom:6px;
  color:#1D2B5F;
  font-size:18px;
}
.topic-copy > span{
  color:#5B647A;
  font-size:14px;
  line-height:1.6;
}
@media(max-width:720px){
  .topic-copy{padding:13px 14px 15px}
  .topic-copy strong{font-size:16px}
  .topic-copy > span{font-size:13px}
}