*{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:1.8;overflow-x:hidden}a{color:#137CD8}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,.drawer-logo,.footer-logo{display:flex;align-items:center;text-decoration:none;min-width:0}.site-logo img{display:block;height:38px;width:auto;max-width:156px;object-fit:contain}.logo-fallback{font-size:20px;font-weight:800;color:#137CD8;white-space:nowrap}.nav-core{display:flex;align-items:center;justify-content:center;gap:2px;flex:1}.nav-core a{color:#24364F;padding:8px 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0}.drawer-open{overflow:hidden}
@media(max-width:1180px){.floating-tools{display:none}}
@media(max-width:980px){.nav-core,.channel-bar{display:none}.menu-toggle{display:inline-flex;align-items:center}.header-inner{min-height:62px;padding:0 10px;gap:6px}.site-logo{position:absolute;left:50%;transform:translateX(-50%)}.site-logo img{height:34px;max-width:130px}.header-actions{margin-left:auto;gap:5px}.header-actions .login-btn,.header-actions .main-btn{height:40px;min-width:64px;padding:0 10px;font-size:13px}.drawer-actions{display:flex;gap:10px;padding:12px 16px;border-bottom:1px solid rgba(47,168,247,.14)}.drawer-actions>a{flex:1}.drawer-scroll{height:calc(100vh - 126px)}.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)}.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{height:62px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid rgba(47,168,247,.14)}.drawer-logo img{height:34px;width:auto;max-width:150px;object-fit:contain}.drawer-close{min-height:40px;border:0;background:#EDF5FF;color:#137CD8;border-radius:10px;padding:0 12px;font-weight:800}.drawer-scroll{height:calc(100vh - 62px);overflow-y:auto;padding:14px 16px 90px}.drawer-scroll section{margin-bottom:18px}.drawer-scroll h2{font-size:13px;color:#5D718A;margin:0 0 6px}.drawer-scroll a{display:block;text-decoration:none;color:#24364F;padding:9px 6px;border-bottom:1px solid rgba(47,168,247,.10)}.mobile-bottom{display:grid;position:fixed;left:0;right:0;bottom:0;z-index:8500;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{display:flex;align-items:center;justify-content:center;min-height:50px;text-decoration:none;color:#137CD8;font-weight:700}.site-footer{padding-bottom:84px}.slider-window{height:220px}.link-list,.topic-grid,.help-grid{grid-template-columns:repeat(2,1fr)}.two-col{grid-template-columns:1fr}.app-strip{grid-template-columns:1fr}.app-strip .media{height:190px}.page-shell{padding-top:28px}.page-hero{padding:24px}}
@media(max-width:600px){.header-inner{min-height:58px}.site-logo img{height:31px;max-width:116px}.logo-fallback{font-size:17px}.header-cta{min-width:74px;padding:0 10px;font-size:13px}.menu-toggle{font-size:14px}.hero-slider{margin-top:18px}.slider-window{height:160px}.slider-prev,.slider-next{width:38px;height:38px}.slider-prev{left:22px}.slider-next{right:22px}.topic-grid,.link-list,.help-grid{grid-template-columns:repeat(2,1fr);gap:10px}.mini-grid{grid-template-columns:1fr}.text-card{padding:14px}.home-section{padding-top:16px;padding-bottom:16px}.page-hero h1{font-size:28px}.lead{font-size:16px}.content-section{padding:20px}.content-section h2{font-size:22px}.app-strip{padding:18px}.page-shell{padding-left:12px;padding-right:12px}.breadcrumbs{margin-bottom:12px}}
@media(max-width:390px){.header-cta{min-width:70px;padding:0 8px}.site-logo img{max-width:108px}.menu-toggle{padding:0 4px}.topic-grid,.link-list,.help-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.text-card{font-size:14px}.slider-window{height:150px}}

.feature-band{display:grid;grid-template-columns:1.1fr .9fr;gap:20px;align-items:stretch}
.feature-copy{background:#fff;border:1px solid rgba(47,168,247,.14);border-radius:16px;padding:26px;box-shadow:0 12px 26px rgba(19,124,216,.07)}
.feature-copy h1{margin:0 0 14px;color:#137CD8;line-height:1.25;font-size:clamp(28px,4vw,42px)}
.feature-copy p{margin:0 0 16px}
.feature-links{display:flex;flex-wrap:wrap;gap:10px}
.feature-links a{background:#EDF5FF;border-radius:999px;padding:8px 13px;text-decoration:none;font-weight:700}
.index-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.index-card{background:#fff;border:1px solid rgba(47,168,247,.14);border-radius:16px;padding:20px;text-decoration:none;color:#24364F;box-shadow:0 10px 24px rgba(19,124,216,.06)}
.index-card strong{display:block;color:#137CD8;font-size:18px;margin-bottom:6px}
.editorial-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.editorial-item{background:#fff;border:1px solid rgba(47,168,247,.14);border-radius:16px;padding:22px}
.editorial-item h2{font-size:21px;margin:0 0 10px;color:#137CD8}
.dual-panel{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.dual-panel>section{background:#fff;border:1px solid rgba(47,168,247,.14);border-radius:16px;padding:24px}
.quick-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
@media(max-width:980px){.header-actions .login-btn{display:none}.feature-band,.dual-panel{grid-template-columns:1fr}.index-grid{grid-template-columns:repeat(2,1fr)}.editorial-row{grid-template-columns:1fr}.feature-band .media{min-height:180px}}
@media(max-width:520px){.index-grid{grid-template-columns:1fr 1fr}.index-card{padding:15px}.index-card strong{font-size:16px}}