*{box-sizing:border-box}
html{scroll-behavior:smooth;background:#F4FBFF}
body{margin:0;background:#F4FBFF;color:#223044;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.82;overflow-x:hidden}
a{color:#0877C9;text-decoration:none}
a:hover{text-decoration:none}
img{max-width:100%}
button,input,textarea{font:inherit}
.site-header{position:sticky;top:0;z-index:9999;width:100%;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);box-shadow:0 8px 24px rgba(8,119,201,.08)}
.header-inner{max-width:1180px;min-height:70px;margin:0 auto;padding:0 18px;display:flex;align-items:center;justify-content:space-between;gap:14px}
.site-logo,.drawer-logo,.footer-logo{display:flex;align-items:center;flex:0 0 auto}
.site-logo img{display:block;height:40px;width:auto;max-width:168px;object-fit:contain}
.drawer-logo img,.footer-logo img{display:block;height:42px;width:auto;max-width:180px;object-fit:contain}
.logo-placeholder{display:block;width:156px;height:40px;border-radius:10px;background:linear-gradient(135deg,#EAF7FF,#dff3ff);border:1px solid rgba(28,168,246,.12)}
.nav-core{display:flex;align-items:center;justify-content:center;gap:3px;white-space:nowrap;min-width:0}
.nav-core a{color:#1D2A3A;padding:8px 11px;font-weight:700;text-decoration:none;white-space:nowrap;border-bottom:2px solid transparent}
.nav-core a.is-current,.nav-core a:hover{color:#0877C9;border-bottom-color:#1CA8F6}
.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:#FFFFFF;border-radius:999px;text-decoration:none;font-weight:700;box-shadow:0 12px 26px rgba(8,119,201,.18);white-space:nowrap}
.main-btn:hover{color:#fff;filter:brightness(.98)}
.menu-toggle{display:none;border:0;background:transparent;color:#0877C9;font-size:26px;width:42px;height:42px;cursor:pointer}
.channel-strip{background:#EAF7FF;border-top:1px solid rgba(28,168,246,.08)}
.channel-inner{max-width:1180px;margin:0 auto;padding:0 18px;display:flex;gap:8px;overflow-x:auto;scrollbar-width:thin}
.channel-inner a{flex:0 0 auto;padding:10px 7px;color:#5F7082;font-size:14px;white-space:nowrap}
.channel-inner a:hover,.channel-inner a.is-current{color:#0877C9;font-weight:700}
.site-main{min-height:60vh;padding-bottom:24px}
.page-shell{width:min(1180px,calc(100% - 36px));margin:0 auto}
.section{padding:56px 0}
.section-tight{padding:36px 0}
.hero-copy{padding:54px 0 26px}
.eyebrow{font-size:14px;font-weight:700;letter-spacing:.08em;color:#1CA8F6;text-transform:uppercase;margin:0 0 8px}
h1,h2,h3{color:#0877C9;line-height:1.25;margin-top:0}
h1{font-size:clamp(34px,4vw,46px);margin-bottom:18px;letter-spacing:-.02em}
h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:16px}
h3{font-size:20px;margin-bottom:10px}
p{margin:0 0 16px}
.lead{font-size:18px;color:#33465a;max-width:840px}
.reading{width:min(820px,100%);font-size:17px}
.reading p{margin-bottom:18px}
.soft{color:#5F7082}
.note{padding:18px 20px;border:1px solid rgba(28,168,246,.12);border-radius:14px;background:#EAF7FF;color:#33465a}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.card{background:#fff;border:1px solid rgba(28,168,246,.12);border-radius:16px;box-shadow:0 16px 40px rgba(8,119,201,.08);padding:24px;min-width:0}
.card p:last-child{margin-bottom:0}
.card-link{display:inline-flex;margin-top:8px;font-weight:700}
.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:14px;background:#EAF7FF;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;display:block;background:linear-gradient(135deg,#EAF7FF 0%,#dff3ff 100%)}
.media.card-media{height:168px;aspect-ratio:auto}
.media.feature-media{height:232px;aspect-ratio:auto}
.split{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:28px;align-items:center}
.split.reverse{grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr)}
.split.reverse>.visual{order:2}
.split.reverse>.copy{order:1}
.path-list,.plain-list{margin:0;padding-left:22px}
.path-list li,.plain-list li{margin:8px 0}
.link-row{display:flex;flex-wrap:wrap;gap:10px}
.link-pill{display:inline-flex;align-items:center;min-height:40px;padding:7px 14px;border-radius:999px;background:#fff;border:1px solid rgba(28,168,246,.18);color:#0877C9;font-weight:700;white-space:nowrap}
.link-pill:hover{background:#EAF7FF}
.topic-strip{display:flex;gap:10px;overflow-x:auto;padding:4px 2px 12px;scrollbar-width:thin}
.topic-strip .link-pill{flex:0 0 auto}
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;counter-reset:step}
.step{counter-increment:step;background:#fff;border:1px solid rgba(28,168,246,.12);border-radius:16px;padding:22px}
.step:before{content:counter(step,decimal-leading-zero);display:inline-flex;width:38px;height:38px;border-radius:50%;align-items:center;justify-content:center;background:#EAF7FF;color:#0877C9;font-weight:800;margin-bottom:14px}
.compare{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.compare .card{box-shadow:none}
.related{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.related a{background:#fff;border:1px solid rgba(28,168,246,.12);border-radius:14px;padding:18px;font-weight:700;min-height:76px;display:flex;align-items:center}
.home-slider{width:min(1180px,calc(100% - 36px));margin:28px auto 0;background:#fff;border-radius:16px;overflow:hidden;position:relative;box-shadow:0 16px 40px rgba(8,119,201,.08);height:330px}
.slide{display:none;position:absolute;inset:0}
.slide.is-active{display:block}
.slide .media{height:100%;aspect-ratio:auto;border-radius:0;background:#fff}
.slide .media-placeholder{background:#EAF7FF}
.slider-prev,.slider-next{position:absolute;top:50%;transform:translateY(-50%);z-index:4;width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.92);color:#0877C9;font-size:28px;cursor:pointer;box-shadow:0 8px 22px rgba(8,119,201,.14)}
.slider-prev{left:14px}.slider-next{right:14px}
.slider-dots{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);z-index:4;display:flex;gap:8px}
.slider-dot{width:9px;height:9px;border:0;border-radius:50%;padding:0;background:#b9dff4;cursor:pointer}
.slider-dot.is-active{background:#0877C9}
.magazine{display:grid;grid-template-columns:minmax(0,58fr) minmax(0,42fr);gap:20px;align-items:stretch}
.magazine-main{background:#fff;border:1px solid rgba(28,168,246,.12);border-radius:16px;box-shadow:0 16px 40px rgba(8,119,201,.08);padding:24px;display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.9fr);gap:22px;align-items:center}
.magazine-side{display:grid;grid-template-rows:repeat(3,1fr);gap:14px}
.magazine-side .card{padding:20px}
.boundary{width:min(820px,calc(100% - 36px));margin:0 auto;padding:28px;border-top:1px solid rgba(28,168,246,.18);border-bottom:1px solid rgba(28,168,246,.18);font-size:17px}
.faq-list{display:grid;gap:14px}
.faq-item{background:#fff;border:1px solid rgba(28,168,246,.12);border-radius:16px;padding:22px}
.faq-item h2{font-size:20px;margin-bottom:8px}
.side-float{position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:9000;width:112px;display:grid;gap:8px}
.side-float>a,.side-float>button{min-height:42px;border:1px solid rgba(28,168,246,.18);border-radius:12px;background:#fff;color:#0877C9;display:flex;align-items:center;justify-content:center;text-align:center;padding:7px 9px;cursor:pointer;font-weight:700;box-shadow:0 10px 24px rgba(8,119,201,.08)}
.side-float .main-btn{border:0;color:#fff;border-radius:12px;height:44px;min-width:0;padding:0 10px}
.site-footer{background:#082A46;color:#EAF8FF;margin-top:48px}
.footer-grid{max-width:1180px;margin:0 auto;padding:52px 18px 34px;display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:34px}
.site-footer h2{font-size:18px;color:#fff;margin-bottom:14px}
.site-footer a{color:#EAF8FF;display:block;padding:4px 0}
.footer-brand p{color:#d1ebf8;max-width:360px;margin-top:14px}
.footer-logo .logo-placeholder{background:rgba(234,247,255,.14);border-color:rgba(234,247,255,.18)}
.footer-bottom{max-width:1180px;margin:0 auto;padding:18px;border-top:1px solid rgba(234,248,255,.16);display:flex;gap:20px;justify-content:space-between;color:#c9e5f4;font-size:14px}
.footer-bottom p{margin:0}
.mobile-bottom{display:none}
.mobile-drawer,.drawer-mask{display:none}
body.drawer-open{overflow:hidden}

@media(min-width:1241px){.site-main{padding-right:120px}}
@media(max-width:1240px){.side-float{display:none}}
@media(max-width:980px){
  .header-inner{min-height:64px;padding:0 12px;display:grid;grid-template-columns:48px minmax(0,1fr) auto;gap:8px}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center}
  .site-logo{justify-self:center;min-width:0}
  .site-logo img{height:36px;max-width:150px}
  .site-logo .logo-placeholder{width:132px;height:36px}
  .nav-core,.channel-strip{display:none}
  .header-cta{justify-self:end;min-width:86px;height:40px;padding:0 14px}
  .site-main{padding-bottom:76px}
  .home-slider{height:260px}
  .magazine{grid-template-columns:1fr}
  .magazine-main{grid-template-columns:1fr 1fr}
  .grid-3,.compare,.steps{grid-template-columns:1fr 1fr}
  .related{grid-template-columns:1fr 1fr}
  .split,.split.reverse{grid-template-columns:1fr}
  .split.reverse>.visual,.split.reverse>.copy{order:initial}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-bottom{display:block}
  .footer-bottom p+p{margin-top:8px}
  .mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:9500;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid rgba(28,168,246,.14);box-shadow:0 -8px 24px rgba(8,119,201,.08);padding-bottom:env(safe-area-inset-bottom)}
  .mobile-bottom a{min-height:58px;display:flex;align-items:center;justify-content:center;color:#1D2A3A;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(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}
  .drawer-head{min-height:68px;padding:12px 14px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(28,168,246,.12)}
  .drawer-close{border:0;background:#EAF7FF;color:#0877C9;width:40px;height:40px;border-radius:50%;font-size:28px;cursor:pointer}
  .drawer-scroll{height:calc(100vh - 68px);overflow:auto;padding:14px 16px 28px}
  .drawer-scroll section{padding:10px 0;border-bottom:1px solid rgba(28,168,246,.10)}
  .drawer-scroll h2{font-size:14px;color:#7A8A9A;margin:0 0 6px}
  .drawer-scroll a{display:block;padding:8px 0;color:#1D2A3A;font-weight:700}
}
@media(max-width:640px){
  .header-inner{grid-template-columns:44px minmax(0,1fr) auto}
  .site-logo img{height:34px;max-width:132px}
  .site-logo .logo-placeholder{width:118px;height:34px}
  .header-cta{min-width:78px;height:38px;padding:0 12px;font-size:14px}
  .page-shell{width:min(100% - 28px,1180px)}
  .section{padding:36px 0}
  .section-tight{padding:28px 0}
  .hero-copy{padding:36px 0 18px}
  h1{font-size:clamp(26px,8vw,32px)}
  h2{font-size:24px}
  .lead,.reading,.boundary{font-size:16px}
  .home-slider{width:calc(100% - 28px);height:180px;margin-top:18px}
  .slider-prev,.slider-next{width:36px;height:36px;font-size:24px}
  .magazine-main{grid-template-columns:1fr;padding:18px}
  .magazine-side .card,.card{padding:18px}
  .grid-2,.grid-3,.compare,.steps,.related{grid-template-columns:1fr}
  .media.feature-media{height:210px}
  .media.card-media{height:160px}
  .boundary{width:calc(100% - 28px);padding:22px 0}
  .footer-grid{grid-template-columns:1fr;padding:40px 14px 28px;gap:22px}
  .footer-bottom{padding:16px 14px}
}
@media(max-width:430px){
  .header-inner{padding:0 8px;gap:4px}
  .menu-toggle{width:40px;height:40px;font-size:24px}
  .site-logo img{height:32px;max-width:118px}
  .site-logo .logo-placeholder{width:104px;height:32px}
  .header-cta{min-width:72px;padding:0 10px;font-size:13px}
}