:root{--bg:#edf4fb;--paper:#fff;--soft:#f5f9fd;--line:rgba(37,120,196,.15);--blue:#177fd2;--cyan:#38b8f4;--ink:#23384d;--muted:#60758a;--deep:#102d47;--shadow:0 12px 28px rgba(22,97,157,.11)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8;overflow-x:hidden}a{color:inherit}img{max-width:100%}button,a{touch-action:manipulation}.site-header{position:sticky;top:0;z-index:9000;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);box-shadow:0 5px 18px rgba(25,108,174,.08)}.header-inner{max-width:1160px;min-height:66px;margin:auto;padding:0 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}.site-logo{display:flex;align-items:center;min-width:132px}.site-logo img{height:38px;width:auto;max-width:156px;object-fit:contain}.logo-placeholder{font-weight:900;letter-spacing:1px;color:var(--blue)}.nav-core{display:flex;align-items:center;justify-content:center;gap:2px;white-space:nowrap}.nav-core a{text-decoration:none;padding:8px 10px;font-size:14px;font-weight:700;color:#344c63;border-radius:8px}.nav-core a:hover,.nav-core 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var(--line);box-shadow:var(--shadow);z-index:1}.carousel-track{position:relative;height:288px}.carousel-slide{position:absolute;inset:0;opacity:0;transition:opacity .35s ease;display:flex;align-items:center;justify-content:center;background:#eef7ff}.carousel-slide.is-active{opacity:1;z-index:1}.carousel-slide 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p{margin:0;color:var(--muted);font-size:14px}.portal-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.portal-card,.note-card,.mini-card,.topic-card,.service-card,.brand-card{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 8px 22px rgba(31,102,158,.07)}.portal-card{padding:20px;text-decoration:none;min-height:168px;transition:.18s}.portal-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.portal-card b{display:block;color:#166ca8;font-size:19px;margin-bottom:8px}.portal-card p,.note-card p,.mini-card p,.topic-card p,.service-card p,.brand-card p{margin:0;color:var(--muted);font-size:14px}.split-feature{display:grid;grid-template-columns:1.02fr .98fr;gap:22px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow)}.media{position:relative;width:100%;overflow:hidden;border-radius:14px;background:#eaf5fd;aspect-ratio:16/9}.media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center}.media-placeholder{position:absolute;inset:0;background:linear-gradient(135deg,#eaf5fd,#d9edf9)}.split-feature h2{margin:0 0 10px;font-size:28px;color:#17466d}.split-feature p{color:var(--muted)}.text-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.text-links a{padding:8px 12px;border-radius:999px;background:#eef7fd;color:#1679bd;text-decoration:none;font-size:13px;font-weight:700}.route-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.note-card{padding:19px}.note-card small{color:#1881cd;font-weight:900;letter-spacing:.8px}.note-card h3{margin:6px 0 8px;color:#1a4669;font-size:19px}.note-card a,.topic-card a,.brand-card a{display:inline-block;margin-top:10px;color:#137cc5;text-decoration:none;font-weight:800}.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.topic-card{padding:18px}.notice-band{margin-top:30px;background:#f6fbff;border:1px solid #cfe6f6;border-radius:14px;padding:16px 18px;color:#536d83}.page-hero{padding:26px;margin-bottom:20px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px}.article-main{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:var(--shadow)}.article-main h2{font-size:23px;color:#19496d;margin:30px 0 10px}.article-main h2:first-child{margin-top:0}.article-main p{font-size:16px;color:#405a70}.article-main ul{padding-left:20px;color:#405a70}.article-main li{margin:9px 0}.article-side{display:flex;flex-direction:column;gap:12px}.mini-card,.service-card{padding:17px}.mini-card b,.service-card b{display:block;color:#176ea9;margin-bottom:6px}.quick-links{display:grid;gap:8px}.quick-links 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@media(max-width:980px){body.drawer-open{overflow:hidden}.channel-bar,.nav-core{display:none}.menu-toggle{display:block}.header-inner{min-height:62px}.site-logo{position:absolute;left:50%;transform:translateX(-50%);min-width:0}.site-logo img{max-width:118px;height:34px}.auth-actions{margin-left:auto}.auth-actions .main-btn,.auth-actions .login-btn{min-width:55px;padding:0 8px;font-size:12px}.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}.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{display:flex;align-items:center;justify-content:space-between;padding:15px;border-bottom:1px solid var(--line)}.drawer-logo img{height:34px;width:auto;max-width:140px;object-fit:contain}.drawer-close{min-height:40px;border:0;background:#eef7fd;color:#1678b8;border-radius:10px;padding:0 12px}.drawer-auth{display:flex;gap:8px;padding:14px}.drawer-auth a{flex:1}.drawer-group{padding:8px 15px 12px;border-top:1px solid #edf4f8}.drawer-group strong{display:block;color:#1a5279;margin-bottom:4px}.drawer-group a{display:inline-block;text-decoration:none;color:#526b81;padding:7px 10px 7px 0}.top-intro{grid-template-columns:1fr}.intro-actions{justify-content:flex-start}.portal-grid{grid-template-columns:repeat(2,1fr)}.split-feature,.article-layout{grid-template-columns:1fr}.route-grid,.topic-grid,.brand-grid{grid-template-columns:repeat(2,1fr)}.article-side{display:grid;grid-template-columns:repeat(2,1fr)}.side-float{display:none}.mobile-bottom{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:0;right:0;bottom:0;z-index:8500;background:#fff;border-top:1px solid #d9e7f2;padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{text-align:center;text-decoration:none;color:#526b81;padding:11px 3px;font-size:13px}.site-footer{padding-bottom:88px}}
@media(max-width:640px){.page-shell{padding:20px 12px 56px}.top-intro,.page-hero{padding:20px}.top-intro p,.page-hero p{font-size:15px}.carousel-track{height:168px}.portal-grid,.route-grid,.topic-grid,.brand-grid{grid-template-columns:1fr 1fr;gap:10px}.portal-card{padding:15px;min-height:138px}.article-main{padding:19px}.article-side{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.section-head{align-items:flex-start;flex-direction:column;gap:2px}.section-head h2{font-size:24px}.auth-actions{gap:3px}.auth-actions .main-btn,.auth-actions .login-btn{min-width:48px;padding:0 6px}.menu-toggle{width:54px;padding:0}.site-logo img{max-width:102px}}
@media(max-width:390px){.portal-grid,.route-grid,.topic-grid,.brand-grid,.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.auth-actions .main-btn,.auth-actions .login-btn{font-size:11px;min-width:44px}.site-logo img{max-width:94px}}