*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#EEF5FC;color:#23384D;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.78;overflow-x:hidden}a{color:#156FC1}button,a{touch-action:manipulation}.site-header{position:sticky;top:0;z-index:9000;background:rgba(255,255,255,.97);border-bottom:1px solid rgba(24,126,218,.13);backdrop-filter:blur(12px)}.top-inner{max-width:1180px;min-height:70px;margin:0 auto;padding:0 18px;display:flex;align-items:center;gap:18px}.site-logo{display:flex;align-items:center;flex:0 0 auto}.site-logo img,.drawer-logo img,.footer-logo img{display:block;height:36px;width:auto;max-width:148px;object-fit:contain}.logo-fallback{display:inline-flex;align-items:center;justify-content:center;min-width:112px;height:36px;padding:0 12px;border-radius:10px;background:#E8F4FF;color:#126FC1;font-weight:900}.logo-fallback.dark{background:rgba(255,255,255,.1);color:#EAF6FF}.core-nav{display:flex;align-items:center;justify-content:center;gap:2px;flex:1;min-width:0}.core-nav a{padding:8px 10px;color:#314A61;text-decoration:none;font-weight:750;white-space:nowrap;border-radius:9px}.core-nav a:hover,.core-nav a.is-current{background:#EAF5FF;color:#0E78D7}.main-btn{display:inline-flex;align-items:center;justify-content:center;min-height:42px;min-width:84px;padding:0 18px;border-radius:11px;background:linear-gradient(135deg,#2CB7FF,#167FD7 56%,#0C66BC);color:#fff;text-decoration:none;font-weight:800;box-shadow:0 9px 24px rgba(18,111,193,.18)}.header-action{flex:0 0 auto}.menu-toggle{display:none;min-height:40px;border:1px solid rgba(18,111,193,.2);background:#fff;color:#0E78D7;border-radius:10px;padding:0 12px;font-weight:800}.topic-ribbon{background:#F9FCFF;border-bottom:1px solid rgba(24,126,218,.1)}.ribbon-inner{max-width:1180px;margin:0 auto;padding:0 18px;display:flex;gap:20px;overflow-x:auto;white-space:nowrap}.ribbon-inner a{display:inline-flex;align-items:center;min-height:44px;text-decoration:none;color:#617990;font-size:14px;font-weight:700;border-bottom:2px solid transparent}.ribbon-inner a:hover,.ribbon-inner a.is-current{color:#0E78D7;border-bottom-color:#0E78D7}.mobile-drawer,.drawer-mask{display:none}.site-main{min-height:62vh}.page-shell{max-width:1180px;margin:0 auto;padding:34px 74px 48px 18px}.breadcrumb{font-size:14px;color:#6D8399;margin-bottom:15px}.breadcrumb a{color:#6D8399;text-decoration:none}.breadcrumb span{margin:0 7px;color:#A4B2C0}.home-hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:22px;align-items:stretch}.hero-copy,.hero-panel,.content-card,.article-wrap,.feature-card{background:#fff;border:1px solid rgba(24,126,218,.13);border-radius:18px;box-shadow:0 12px 30px rgba(18,111,193,.08)}.hero-copy{padding:34px}.eyebrow{display:inline-flex;align-items:center;min-height:30px;padding:0 10px;border-radius:999px;background:#E9F5FF;color:#0E78D7;font-weight:800;font-size:13px}.hero-copy h1,.article-head h1{margin:13px 0 14px;color:#123E66;line-height:1.2;letter-spacing:-.02em}.hero-copy h1{font-size:clamp(32px,4.4vw,46px)}.hero-copy p{font-size:17px;color:#526B82;margin:0 0 20px}.hero-actions{display:flex;gap:10px;flex-wrap:wrap}.text-link{display:inline-flex;align-items:center;min-height:42px;padding:0 14px;border-radius:10px;background:#F5FAFF;border:1px solid rgba(24,126,218,.13);text-decoration:none;font-weight:800}.hero-panel{padding:18px;display:grid;grid-template-rows:auto 1fr;gap:14px}.hero-panel h2{font-size:18px;margin:0;color:#123E66}.quick-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.quick-grid a{display:flex;flex-direction:column;justify-content:space-between;min-height:112px;padding:16px;border-radius:14px;background:linear-gradient(180deg,#F7FBFF,#ECF6FF);border:1px solid rgba(24,126,218,.12);text-decoration:none}.quick-grid strong{color:#0E78D7;font-size:18px}.quick-grid span{color:#647D93;font-size:13px}.section{margin:30px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:15px}.section-head h2{margin:0;color:#123E66;font-size:25px}.section-head p{margin:0;color:#70869A;font-size:14px}.image-strip{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:10px}.media{position:relative;width:100%;overflow:hidden;border-radius:14px;background:#E9F4FE;aspect-ratio:16/9;z-index:1}.media img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center;display:block}.media-placeholder{position:absolute;inset:0;background:linear-gradient(135deg,#E9F4FE,#F8FCFF)}.image-strip .media{height:150px;aspect-ratio:auto}.image-strip .media:first-child{height:220px;grid-row:span 2}.image-strip{grid-template-rows:105px 105px}.image-strip .media:nth-child(n+2){height:105px}.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.feature-card{padding:20px}.feature-card b{display:inline-flex;width:34px;height:34px;border-radius:10px;align-items:center;justify-content:center;background:#E9F5FF;color:#0E78D7;margin-bottom:12px}.feature-card h3{margin:0 0 7px;color:#123E66}.feature-card p{margin:0 0 10px;color:#60778D;font-size:15px}.feature-card a{font-weight:800;text-decoration:none}.directory-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.directory-list a{display:flex;align-items:center;justify-content:space-between;gap:18px;background:#fff;border:1px solid rgba(24,126,218,.12);border-radius:12px;padding:14px 16px;text-decoration:none;color:#29455F;font-weight:800}.directory-list a span{color:#71879C;font-size:13px;font-weight:600}.article-wrap{max-width:850px;margin:0 auto;padding:32px 36px}.article-head{padding-bottom:20px;border-bottom:1px solid rgba(24,126,218,.12);margin-bottom:22px}.article-head h1{font-size:clamp(29px,4vw,40px)}.article-head p{margin:0;color:#677F94;font-size:16px}.article-body h2{font-size:23px;line-height:1.35;color:#123E66;margin:28px 0 10px}.article-body p{font-size:17px;margin:0 0 16px}.article-body ul,.article-body ol{padding-left:24px}.article-body li{margin:8px 0}.article-media{margin:20px 0}.article-media .media{min-height:210px}.mini-index{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:18px 0}.mini-index a{display:flex;align-items:center;min-height:52px;padding:12px;border-radius:11px;background:#F5FAFF;border:1px solid rgba(24,126,218,.12);text-decoration:none;font-weight:800}.note-box{padding:15px 17px;margin:20px 0;background:#F4FAFF;border-left:4px solid #1682D9;border-radius:10px;color:#526D85}.related-links{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}.related-links a{display:inline-flex;align-items:center;min-height:40px;padding:7px 12px;border-radius:9px;background:#F3F9FF;border:1px solid rgba(24,126,218,.12);text-decoration:none;font-weight:800}.qa-list{display:grid;gap:12px}.qa-item{padding:18px;border-radius:12px;background:#F7FBFF;border:1px solid rgba(24,126,218,.12)}.qa-item h2{margin:0 0 7px!important;font-size:19px!important}.qa-item p{margin:0}.side-tools{position:fixed;right:12px;top:36%;z-index:8000;width:56px;display:flex;flex-direction:column;gap:8px}.side-tools a,.side-tools button{display:flex;align-items:center;justify-content:center;min-height:48px;border-radius:10px;border:1px solid rgba(24,126,218,.16);background:#fff;color:#0E78D7;text-decoration:none;font-size:12px;font-weight:800;cursor:pointer}.side-tools .side-primary{background:linear-gradient(135deg,#2CB7FF,#167FD7 56%,#0C66BC);color:#fff}.mobile-bottom{display:none}.site-footer{background:#102D48;color:#DCECF8;margin-top:34px}.footer-grid{max-width:1180px;margin:0 auto;padding:36px 18px 28px;display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:38px}.site-footer h2{font-size:17px;color:#fff;margin:0 0 10px}.site-footer a{color:#DCECF8;text-decoration:none}.footer-grid section:not(.footer-brand){display:flex;flex-direction:column;gap:6px}.footer-brand p{max-width:460px;color:#BFD5E6}.footer-note{max-width:1180px;margin:0 auto;padding:16px 18px 22px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;gap:16px;font-size:14px;color:#BFD5E6}.footer-note p{margin:0}.drawer-head,.drawer-body{display:none}@media(max-width:980px){.top-inner{min-height:64px;padding:0 10px;display:grid;grid-template-columns:1fr auto 1fr;gap:7px}.menu-toggle{display:inline-flex;align-items:center;justify-content:center;justify-self:start}.core-nav,.topic-ribbon{display:none}.site-logo{justify-self:center}.site-logo img{height:34px;max-width:124px}.header-action{justify-self:end;min-width:70px;padding:0 10px}.page-shell{padding:24px 14px 86px}.home-hero{grid-template-columns:1fr}.hero-copy{padding:24px}.quick-grid a{min-height:100px}.image-strip{grid-template-columns:1fr 1fr;grid-template-rows:auto}.image-strip .media,.image-strip .media:first-child,.image-strip .media:nth-child(n+2){height:135px;grid-row:auto}.feature-grid{grid-template-columns:1fr}.directory-list{grid-template-columns:1fr}.article-wrap{padding:24px 18px}.mini-index{grid-template-columns:1fr 1fr}.side-tools{display:none}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;left:0;right:0;bottom:0;z-index:8500;background:#fff;border-top:1px solid rgba(24,126,218,.18);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:58px;color:#0E78D7;text-decoration:none;font-weight:800}.footer-grid{grid-template-columns:1fr;gap:22px}.footer-note{display:block;padding-bottom:82px}.footer-note span{display:block;margin-top:6px}.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(15,47,76,.18);overflow-y:auto}.mobile-drawer.is-open{transform:translateX(0)}.drawer-mask{display:none;position:fixed;inset:0;background:rgba(15,47,76,.38);z-index:11000;opacity:0;pointer-events:none;transition:opacity .18s ease}.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}body.drawer-open{overflow:hidden}.drawer-head{position:sticky;top:0;z-index:2;background:#fff;display:flex;align-items:center;justify-content:space-between;padding:13px 14px;border-bottom:1px solid rgba(24,126,218,.12)}.drawer-close{min-height:40px;border:1px solid rgba(24,126,218,.2);background:#fff;color:#0E78D7;border-radius:9px;padding:0 12px;font-weight:800}.drawer-body{display:block;padding:8px 14px 24px}.drawer-body section{padding:12px 0;border-bottom:1px solid rgba(24,126,218,.1)}.drawer-body h2{font-size:14px;color:#71879C;margin:0 0 6px}.drawer-body a{display:block;min-height:40px;padding:8px 2px;color:#2C465E;text-decoration:none;font-weight:750}}@media(max-width:430px){.header-action{min-width:64px;padding:0 8px;font-size:13px}.site-logo img{max-width:108px}.logo-fallback{min-width:90px;font-size:13px}.mini-index{grid-template-columns:1fr}.quick-grid{grid-template-columns:1fr 1fr}.hero-copy h1{font-size:30px}.image-strip .media,.image-strip .media:first-child,.image-strip .media:nth-child(n+2){height:118px}}@media(max-width:375px){.top-inner{padding:0 7px;gap:4px}.menu-toggle{padding:0 9px;font-size:13px}.header-action{min-width:60px}.site-logo img{max-width:96px}.quick-grid{grid-template-columns:1fr}}