*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#EAF2FB;color:#24364F;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.78;overflow-x:hidden}
a{color:#137CD8;text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
button,a{touch-action:manipulation}
.site-header{position:sticky;top:0;z-index:9000;width:100%;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);box-shadow:0 6px 18px rgba(19,124,216,.08)}
.header-inner{max-width:1140px;min-height:66px;margin:0 auto;padding:0 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.site-logo{display:flex;align-items:center;flex:0 0 auto}
.site-logo img{display:block;height:38px;width:auto;max-width:156px;object-fit:contain}
.logo-placeholder{display:block;width:156px;height:38px;border-radius:10px;background:linear-gradient(135deg,#EDF5FF,#F4F8FF)}
.nav-core{display:flex;align-items:center;justify-content:center;gap:2px;min-width:0}
.nav-core a{color:#24364F;padding:8px 11px;font-weight:700;text-decoration:none;white-space:nowrap}
.nav-core a.is-current,.nav-core a:hover{color:#137CD8;box-shadow:inset 0 -2px 0 #2FA8F7}
.main-btn{display:inline-flex;align-items:center;justify-content:center;height:40px;min-width:92px;padding:0 18px;background:linear-gradient(135deg,#45C7FF 0%,#2FA8F7 48%,#137CD8 100%);color:#FFFFFF;border-radius:999px;text-decoration:none;font-weight:700;box-shadow:0 10px 22px rgba(19,124,216,.18);touch-action:manipulation}
.main-btn:hover{text-decoration:none;filter:brightness(.98)}
.menu-btn{display:none}
.channel-bar{background:#F4F8FF;border-bottom:1px solid rgba(47,168,247,.14)}
.channel-inner{max-width:1140px;margin:0 auto;padding:8px 16px;display:flex;gap:4px;overflow-x:auto;scrollbar-width:thin}
.channel-inner a{flex:0 0 auto;color:#5D718A;padding:5px 9px;border-radius:999px;white-space:nowrap;font-size:14px}
.channel-inner a:hover{color:#137CD8;background:#fff;text-decoration:none}
.site-main{max-width:1140px;margin:0 auto;padding:28px 72px 56px 16px}
.hero-carousel{position:relative;z-index:1;background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 12px 26px rgba(19,124,216,.12);height:280px}
.slide{display:none;width:100%;height:100%;align-items:center;justify-content:center;background:#EDF5FF}
.slide.is-active{display:flex}
.slide img{width:100%;height:100%;object-fit:contain;display:block}
.slide-placeholder{width:100%;height:100%;background:#EDF5FF}
.carousel-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:2;width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.92);color:#137CD8;font-size:24px;cursor:pointer}
.carousel-arrow.prev{left:14px}.carousel-arrow.next{right:14px}
.carousel-dots{position:absolute;left:0;right:0;bottom:12px;display:flex;justify-content:center;gap:8px;z-index:2}
.dot{width:10px;height:10px;padding:0;border:0;border-radius:50%;background:#A8C9E8;cursor:pointer}
.dot.is-active{background:#137CD8}
.section{margin:40px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:18px}
.section h1,.section h2,.article h1,.article h2{color:#137CD8;line-height:1.25}
.section h1,.article h1{font-size:38px;margin:0 0 18px}
.section h2,.article h2{font-size:26px;margin:30px 0 12px}
.lead{font-size:18px;color:#405873;max-width:820px}
.grid-six{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.text-card,.soft-card,.index-card{background:#fff;border:1px solid rgba(47,168,247,.14);border-radius:16px;padding:20px;box-shadow:0 12px 26px rgba(19,124,216,.08)}
.text-card strong,.index-card strong{display:block;color:#137CD8;font-size:19px;margin-bottom:6px}
.text-card p,.index-card p{margin:0;color:#5D718A}
.banner-note{background:#F4F8FF;border:1px solid rgba(47,168,247,.14);border-radius:16px;padding:22px 24px}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:24px;align-items:center}
.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:14px;background:#EDF5FF;aspect-ratio:16/9}
.media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}
.media-placeholder{position:absolute;inset:0;background:#EDF5FF}
.app-strip{display:grid;grid-template-columns:220px 1fr;gap:22px;align-items:center;background:#fff;border-radius:16px;padding:18px;border:1px solid rgba(47,168,247,.14)}
.app-strip .media{height:135px;aspect-ratio:auto}
.breadcrumb{font-size:14px;color:#5D718A;margin-bottom:18px}
.article{max-width:820px;margin:0 auto;background:#fff;border:1px solid rgba(47,168,247,.14);border-radius:16px;padding:32px;box-shadow:0 12px 26px rgba(19,124,216,.08)}
.article p{margin:0 0 16px;font-size:17px}
.article ul,.article ol{padding-left:22px}
.article li{margin:8px 0}
.related-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.related-links a{display:inline-flex;align-items:center;min-height:40px;padding:0 14px;background:#F4F8FF;border-radius:999px;border:1px solid rgba(47,168,247,.14)}
.steps{counter-reset:step;display:grid;gap:12px;margin:18px 0}
.step{position:relative;padding:16px 18px 16px 54px;background:#F4F8FF;border-radius:14px}
.step:before{counter-increment:step;content:counter(step);position:absolute;left:16px;top:16px;width:26px;height:26px;display:grid;place-items:center;background:#137CD8;color:#fff;border-radius:50%;font-weight:700}
.notice-box{padding:18px 20px;border-left:4px solid #2FA8F7;background:#F4F8FF;border-radius:0 14px 14px 0}
.topic-index{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.topic-index a{display:block;background:#F4F8FF;padding:16px;border-radius:14px;font-weight:700}
.faq-list{display:grid;gap:14px}
.faq-item{background:#F4F8FF;border-radius:14px;padding:18px}
.faq-item h2{font-size:20px;margin:0 0 8px}
.side-actions{position:fixed;right:10px;top:34%;z-index:8000;width:112px;display:grid;gap:8px}
.side-actions a,.side-actions button{border:1px solid rgba(47,168,247,.18);background:#fff;color:#137CD8;min-height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;padding:7px;font-weight:700;font-size:13px;cursor:pointer}
.side-actions .side-main{background:linear-gradient(135deg,#45C7FF 0%,#2FA8F7 48%,#137CD8 100%);color:#fff}
.mobile-bottom{display:none}
.site-footer{background:#102B46;color:#EAF6FF}
.footer-grid{max-width:1140px;margin:0 auto;padding:38px 16px;display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:28px}
.footer-grid>div{display:grid;align-content:start;gap:7px}
.footer-grid a{color:#EAF6FF}
.footer-brand img{height:38px;width:auto;max-width:156px;object-fit:contain}
.footer-placeholder{background:rgba(255,255,255,.08)}
.footer-brand p{margin:8px 0 0;color:#C9DDED}
.footer-bottom{text-align:center;padding:18px 16px 28px;border-top:1px solid rgba(234,246,255,.12);font-size:14px;color:#C9DDED}
.mobile-drawer,.drawer-mask{display:none}
body.drawer-open{overflow:hidden}

@media(max-width:980px){
  .header-inner{min-height:62px;padding:0 12px}
  .nav-core,.channel-bar{display:none}
  .menu-btn{display:inline-flex;align-items:center;justify-content:center;min-width:54px;min-height:40px;border:0;background:transparent;color:#137CD8;font-weight:700;font-size:15px;cursor:pointer}
  .site-logo{position:absolute;left:50%;transform:translateX(-50%)}
  .site-logo img{height:34px;max-width:132px}
  .logo-placeholder{width:132px;height:34px}
  .header-action{height:40px;min-width:82px;padding:0 14px;font-size:14px}
  .site-main{padding:22px 14px 84px}
  .side-actions{display:none}
  .mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:8500;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid rgba(47,168,247,.2);padding-bottom:env(safe-area-inset-bottom)}
  .mobile-bottom a{min-height:54px;display:flex;align-items:center;justify-content:center;color:#24364F;font-weight:700}
  .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(16,43,70,.16);overflow-y:auto;padding-bottom:24px}
  .mobile-drawer.is-open{transform:translateX(0)}
  .drawer-mask{display:none;position:fixed;inset:0;background:rgba(16,43,70,.38);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{position:sticky;top:0;background:#fff;display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid rgba(47,168,247,.14)}
  .drawer-logo img{height:34px;width:auto;max-width:132px;object-fit:contain}
  .drawer-close{min-height:40px;border:0;background:#F4F8FF;color:#137CD8;border-radius:10px;padding:0 12px;font-weight:700}
  .drawer-group{display:grid;padding:14px 16px 0}
  .drawer-group strong{color:#137CD8;margin-bottom:6px}
  .drawer-group a{color:#24364F;padding:9px 0;border-bottom:1px solid rgba(47,168,247,.09)}
  .grid-six{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr}
  .app-strip{grid-template-columns:1fr}
  .app-strip .media{height:auto;aspect-ratio:16/9}
  .hero-carousel{height:220px}
  .article{padding:24px}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:600px){
  .site-logo img{max-width:114px;height:31px}
  .logo-placeholder{width:114px;height:31px}
  .header-action{min-width:76px;padding:0 12px}
  .hero-carousel{height:160px;border-radius:14px}
  .carousel-arrow{width:38px;height:38px}
  .grid-six{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .text-card,.index-card{padding:14px}
  .text-card strong,.index-card strong{font-size:16px}
  .text-card p,.index-card p{font-size:13px;line-height:1.6}
  .section{margin:28px 0}
  .section h1,.article h1{font-size:29px}
  .section h2,.article h2{font-size:23px}
  .article{padding:20px 16px}
  .article p{font-size:16px;line-height:1.82}
  .topic-index{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:22px}
}