*{box-sizing:border-box}
html{overflow-x:hidden;scroll-behavior:smooth}
body{margin:0;background:#F4FBFF;color:#223044;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.82;overflow-x:hidden}
img,svg,video{max-width:100%}
a{color:#0877C9;text-underline-offset:3px}
button,input,select,textarea{font:inherit}
.site-header{position:sticky;top:0;z-index:9999;width:100%;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);box-shadow:0 8px 24px rgba(8,119,201,.08)}
.header-inner{max-width:1180px;min-height:72px;margin:0 auto;padding:0 18px;display:flex;align-items:center;gap:18px}
.site-logo{display:flex;align-items:center;flex:0 0 auto;text-decoration:none}
.site-logo img{display:block;height:40px;width:auto;max-width:168px;object-fit:contain}
.logo-text{display:flex;align-items:center;justify-content:center;height:40px;min-width:136px;padding:0 14px;border-radius:10px;background:#EAF7FF;color:#0877C9;font-weight:800}
.primary-nav{margin-left:auto;display:flex;align-items:center;gap:3px;min-width:0}
.primary-nav a{padding:9px 12px;color:#1D2A3A;text-decoration:none;font-weight:700;white-space:nowrap;border-radius:10px}
.primary-nav a:hover,.primary-nav a.is-current{color:#0877C9;background:#EAF7FF}
.main-btn{display:inline-flex;align-items:center;justify-content:center;height:42px;min-width:96px;padding:0 20px;background:linear-gradient(135deg,#38C7FF 0%,#1CA8F6 48%,#0877C9 100%);color:#fff;border-radius:999px;text-decoration:none;font-weight:800;box-shadow:0 12px 26px rgba(8,119,201,.18)}
.header-btn{margin-left:2px;flex:0 0 auto}
.menu-trigger{display:none;width:42px;height:42px;border:0;border-radius:12px;background:#EAF7FF;cursor:pointer;padding:10px}
.menu-trigger span{display:block;height:2px;background:#0877C9;border-radius:2px;margin:4px 0}
.topic-ribbon{background:#EAF7FF;border-top:1px solid rgba(28,168,246,.10);border-bottom:1px solid rgba(28,168,246,.10)}
.topic-ribbon-inner{max-width:1180px;margin:0 auto;padding:0 18px;display:flex;align-items:center;gap:2px;overflow-x:auto;scrollbar-width:thin}
.topic-ribbon-inner a{flex:0 0 auto;color:#5F7082;text-decoration:none;font-size:14px;padding:9px 10px;white-space:nowrap}
.topic-ribbon-inner a:hover{color:#0877C9}
.site-main{min-height:58vh}
.wrap{width:min(1180px,calc(100% - 36px));margin:0 auto}
.reading{width:min(820px,calc(100% - 36px));margin:0 auto}
.section{padding:56px 0}
.section-sm{padding:34px 0}
.kicker{margin:0 0 8px;color:#1CA8F6;font-size:14px;font-weight:800;letter-spacing:.11em}
h1,h2,h3{color:#0877C9;line-height:1.26}
h1{font-size:clamp(34px,4.4vw,46px);margin:0 0 18px}
h2{font-size:clamp(24px,2.8vw,32px);margin:0 0 14px}
h3{font-size:20px;margin:0 0 8px}
p{font-size:17px;margin:0 0 16px}
.lead{font-size:19px;color:#5F7082;max-width:850px}
.hero-text{padding:58px 0 20px}
.card{background:#fff;border:1px solid rgba(28,168,246,.12);border-radius:16px;padding:24px;box-shadow:0 16px 40px rgba(8,119,201,.08)}
.card.soft{background:#EAF7FF}
.card p:last-child{margin-bottom:0}
.media-box{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:14px;background:#EAF7FF;aspect-ratio:16/9}
.media-box>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}
.image-fallback{position:absolute;inset:0;background:linear-gradient(135deg,#EAF7FF,#F8FDFF)}
.media-tall{height:232px;aspect-ratio:auto}
.media-card{height:168px;aspect-ratio:auto}
.home-slider{width:min(1180px,calc(100% - 36px));height:318px;margin:26px auto 0;border-radius:16px;overflow:hidden;background:#fff;position:relative;border:1px solid rgba(28,168,246,.12);box-shadow:0 16px 40px rgba(8,119,201,.08)}
.slide{position:absolute;inset:0;opacity:0;pointer-events:none;transition:opacity .35s ease}
.slide.is-active{opacity:1;pointer-events:auto}
.slide .media-box{height:100%;border-radius:0}
.slide img{width:100%;height:100%;object-fit:contain}
.slider-prev,.slider-next{position:absolute;top:50%;transform:translateY(-50%);z-index:3;width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.94);color:#0877C9;font-size:24px;box-shadow:0 8px 22px rgba(8,119,201,.14);cursor:pointer}
.slider-prev{left:14px}.slider-next{right:14px}
.slider-dots{position:absolute;z-index:3;left:0;right:0;bottom:12px;display:flex;justify-content:center;gap:8px}
.slider-dot{width:9px;height:9px;padding:0;border:0;border-radius:50%;background:#B5DDF3;cursor:pointer}
.slider-dot.is-active{background:#0877C9}
.flash-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:24px;align-items:stretch}
.flash-lead{background:#fff;border:1px solid rgba(28,168,246,.12);border-radius:16px;padding:26px;box-shadow:0 16px 40px rgba(8,119,201,.08)}
.flash-stack{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.flash-stack .mini-card:last-child{grid-column:1/-1}
.mini-card{background:#fff;border:1px solid rgba(28,168,246,.12);border-radius:14px;padding:18px}
.meta-line{display:flex;flex-wrap:wrap;gap:8px 16px;color:#7A8A9A;font-size:14px;margin-bottom:10px}
.text-link{font-weight:800;text-decoration:none}
.text-link:hover{text-decoration:underline}
.topic-strip{display:flex;gap:10px;overflow-x:auto;padding:4px 0 10px;scrollbar-width:thin}
.topic-strip a{flex:0 0 auto;padding:9px 14px;border-radius:999px;background:#fff;border:1px solid rgba(28,168,246,.18);font-weight:800;text-decoration:none}
.service-panels{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:20px}
.service-panels .card:nth-child(2){transform:translateY(18px)}
.service-panels .card:nth-child(3){transform:translateY(-10px)}
.note-band{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.note-band .card{min-height:100%}
.directory{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.directory a{display:block;background:#fff;border:1px solid rgba(28,168,246,.12);border-radius:12px;padding:14px;text-decoration:none;font-weight:800}
.split{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}
.split.reverse .visual{order:2}
.split.reverse .copy{order:1}
.timeline{display:grid;gap:14px}
.timeline-item{position:relative;background:#fff;border:1px solid rgba(28,168,246,.12);border-radius:14px;padding:18px 20px 18px 60px}
.timeline-item:before{content:"";position:absolute;left:24px;top:26px;width:14px;height:14px;border-radius:50%;background:#1CA8F6;box-shadow:0 0 0 7px #EAF7FF}
.timeline-item:not(:last-child):after{content:"";position:absolute;left:30px;top:40px;bottom:-22px;width:2px;background:#D9F0FC}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.compare .card:first-child{border-top:4px solid #1CA8F6}
.compare .card:last-child{border-top:4px solid #0877C9}
.article h2{margin-top:34px}
.article ul,.article ol{padding-left:1.3em}
.article li{font-size:17px;margin-bottom:8px}
.info-box{background:#EAF7FF;border-radius:16px;padding:22px 24px}
.link-cloud{display:flex;flex-wrap:wrap;gap:10px}
.link-cloud a{background:#fff;border:1px solid rgba(28,168,246,.15);border-radius:999px;padding:8px 13px;text-decoration:none;font-weight:700}
.faq-grid{display:grid;gap:14px}
.faq-grid details{background:#fff;border:1px solid rgba(28,168,246,.12);border-radius:14px;padding:18px 20px}
.faq-grid summary{font-weight:800;color:#0877C9;cursor:pointer;font-size:18px}
.faq-grid details p{margin-top:12px}
.desktop-rail{position:fixed;right:12px;top:43%;z-index:9000;width:108px;display:flex;flex-direction:column;gap:8px}
.desktop-rail a,.desktop-rail button{background:#fff;color:#0877C9;border:1px solid rgba(28,168,246,.18);border-radius:12px;padding:9px 10px;text-align:center;text-decoration:none;font-weight:800;box-shadow:0 10px 24px rgba(8,119,201,.10)}
.desktop-rail .rail-main{background:linear-gradient(135deg,#38C7FF 0%,#1CA8F6 48%,#0877C9 100%);color:#fff;border:0}
.back-top{cursor:pointer}
.site-footer{margin-top:48px;background:#082A46;color:#EAF8FF}
.footer-inner{max-width:1180px;margin:0 auto;padding:50px 18px 34px;display:grid;grid-template-columns:1.25fr .8fr .8fr 1fr;gap:28px}
.footer-inner h2{font-size:18px;color:#fff;margin:0 0 12px}
.footer-inner a{display:block;color:#D9F2FF;text-decoration:none;margin:7px 0}
.footer-inner p{font-size:15px;color:#C7E9F8}
.footer-logo img{height:40px;width:auto;max-width:168px;object-fit:contain}
.footer-logo-text{color:#fff;font-size:22px;font-weight:800}
.footer-meta{max-width:1180px;margin:0 auto;padding:20px 18px 28px;border-top:1px solid rgba(234,248,255,.14)}
.footer-meta p{font-size:14px;color:#C7E9F8;margin:6px 0}
.mobile-quick{display:none}
.mobile-drawer,.drawer-mask{display:none}
.drawer-top{height:68px;padding:0 14px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(28,168,246,.12)}
.drawer-brand img{height:36px;width:auto;max-width:148px;object-fit:contain}
.drawer-close{width:40px;height:40px;border:0;border-radius:10px;background:#EAF7FF;color:#0877C9;font-size:28px;line-height:1;cursor:pointer}
.drawer-body{height:calc(100vh - 68px);overflow-y:auto;padding:12px 18px 34px}
.drawer-group{padding:12px 0;border-bottom:1px solid #EAF7FF}
.drawer-group h2{font-size:14px;color:#7A8A9A;margin:0 0 6px}
.drawer-group a{display:block;padding:7px 2px;color:#1D2A3A;text-decoration:none;font-weight:700}
.drawer-open{overflow:hidden}
@media(max-width:1240px){.desktop-rail{display:none}}
@media(max-width:980px){
  .header-inner{min-height:64px;display:grid;grid-template-columns:42px 1fr auto;gap:10px;padding:0 12px}
  .menu-trigger{display:block}
  .site-logo{justify-self:center;min-width:0}
  .site-logo img{height:36px;max-width:145px}
  .logo-text{height:36px;min-width:116px}
  .primary-nav,.topic-ribbon{display:none}
  .header-btn{height:40px;min-width:82px;padding:0 14px;font-size:14px}
  .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(8,119,201,.16)}
  .mobile-drawer.is-open{transform:translateX(0)}
  .drawer-mask{display:none;position:fixed;inset:0;background:rgba(8,42,70,.42);z-index:11000;opacity:0;pointer-events:none;transition:opacity .18s ease}
  .drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}
  .flash-grid,.split,.split.reverse,.note-band{grid-template-columns:1fr}
  .split.reverse .visual,.split.reverse .copy{order:initial}
  .service-panels{grid-template-columns:1fr 1fr}
  .service-panels .card:nth-child(2),.service-panels .card:nth-child(3){transform:none}
  .directory{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-inner{grid-template-columns:repeat(2,minmax(0,1fr))}
  .mobile-quick{position:fixed;left:0;right:0;bottom:0;z-index:10000;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid rgba(28,168,246,.14);padding-bottom:env(safe-area-inset-bottom)}
  .mobile-quick a{text-align:center;text-decoration:none;padding:11px 4px;color:#1D2A3A;font-size:14px;font-weight:800}
  body{padding-bottom:50px}
  .home-slider{height:250px}
}
@media(max-width:680px){
  .wrap,.reading,.home-slider{width:min(100% - 24px,1180px)}
  .section{padding:40px 0}.section-sm{padding:28px 0}.hero-text{padding:38px 0 16px}
  h1{font-size:clamp(26px,8vw,32px)}h2{font-size:24px}
  p,.article li{font-size:16px}.lead{font-size:17px}
  .home-slider{height:180px;margin-top:18px}
  .flash-stack,.service-panels,.directory,.compare,.footer-inner{grid-template-columns:1fr}
  .flash-stack .mini-card:last-child{grid-column:auto}
  .card,.flash-lead{padding:20px}
  .media-tall{height:208px}
  .slider-prev,.slider-next{width:36px;height:36px}
}