*{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;text-decoration:none}a:hover{text-decoration:underline}.site-header{position:sticky;top:0;z-index:9000;background:#fff;border-bottom:1px solid rgba(47,168,247,.18)}.header-inner{max-width:1160px;min-height:68px;margin:auto;padding:0 18px;display:flex;align-items:center;gap:14px;justify-content:space-between}.site-logo img{display:block;height:36px;width:auto;max-width:150px;object-fit:contain}.logo-fallback{font-weight:900;color:#137CD8}.nav-core{display:flex;align-items:center;gap:3px}.nav-core a{padding:8px 10px;color:#24364F;font-weight:700;white-space:nowrap}.nav-core a.is-current,.nav-core 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0}.links{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.links a{display:inline-flex;align-items:center;min-height:40px;padding:0 14px;background:#F7FBFF;border:1px solid rgba(47,168,247,.20);border-radius:999px}.directory{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.directory a{background:#F7FBFF;border:1px solid rgba(47,168,247,.14);border-radius:12px;padding:16px;color:#24364F}.directory strong{display:block;color:#137CD8;margin-bottom:4px}.faq-list details{background:#fff;border:1px solid rgba(47,168,247,.14);border-radius:12px;padding:16px 18px;margin:12px 0}.faq-list summary{cursor:pointer;font-weight:800;color:#137CD8}.floating-actions{position:fixed;right:12px;top:42%;z-index:8000;width:104px;display:flex;flex-direction:column;gap:8px}.floating-actions>a,.floating-actions>button{min-height:40px;border:1px solid rgba(47,168,247,.20);background:#fff;color:#137CD8;border-radius:10px;padding:8px;text-align:center;font:inherit;cursor:pointer}.floating-actions .main-btn{background:linear-gradient(135deg,#45C7FF,#137CD8);color:#fff}.mobile-bottom{display:none}.site-footer{background:#102B46;color:#EAF6FF;padding:34px 18px 22px}.footer-grid{max-width:1160px;margin:auto;display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:28px}.footer-grid>div{display:flex;flex-direction:column;gap:8px}.footer-grid a{color:#EAF6FF}.footer-brand img{height:34px;width:auto;max-width:150px;object-fit:contain;object-position:left}.footer-brand p{max-width:430px;margin:8px 0 0}.footer-bottom{max-width:1160px;margin:22px auto 0;padding-top:16px;border-top:1px solid rgba(234,246,255,.16);font-size:13px;color:#cfe7f8}.footer-bottom span{float:right}.mobile-drawer,.drawer-mask{display:none}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid rgba(47,168,247,.14)}.drawer-logo img{height:32px;width:auto;object-fit:contain}.drawer-close{min-height:40px;border:0;background:#F4F8FF;color:#137CD8;border-radius:8px;padding:0 12px;font-weight:700}.drawer-group{padding:14px 16px;border-bottom:1px solid rgba(47,168,247,.12)}.drawer-group strong{display:block;color:#137CD8;margin-bottom:6px}.drawer-group a{display:block;color:#24364F;padding:7px 0}.drawer-open{overflow:hidden}@media(max-width:980px){.header-inner{min-height:62px;padding:0 12px}.menu-btn{display:inline-flex;align-items:center;justify-content:center;width:60px}.site-logo{position:absolute;left:50%;transform:translateX(-50%)}.site-logo img{height:31px;max-width:120px}.nav-core,.channel-strip,.floating-actions{display:none}.header-inner>.main-btn{margin-left:auto;min-width:72px;padding:0 11px}.site-main{padding:26px 14px 92px}.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(47,168,247,.2)}.mobile-bottom a{min-height:56px;display:flex;align-items:center;justify-content:center;color:#5D718A;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(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}.page-hero{grid-template-columns:1fr;padding:20px}.hero-media .media{height:180px}.image-grid{grid-template-columns:repeat(2,1fr)}.image-grid .media{height:128px}.feature-grid,.directory{grid-template-columns:1fr 1fr}.split{grid-template-columns:1fr}.split .media,.article-body .media{height:190px}.footer-grid{grid-template-columns:1fr}.footer-bottom span{float:none;display:block;margin-top:8px}}@media(max-width:430px){.site-main{padding-left:12px;padding-right:12px}.page-hero{padding:16px}.page-hero h1,.article-head h1{font-size:28px}.image-grid{gap:10px}.image-grid .media{height:116px}.feature-grid,.directory{grid-template-columns:1fr}}
/* v3 homepage composition */
.daily-lanes{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:24px 0}.daily-lanes .lane{background:#fff;border:1px solid rgba(47,168,247,.14);border-radius:12px;padding:18px}.daily-lanes h3{margin:0 0 8px;color:#137CD8}.daily-board{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:stretch;margin:28px 0}.daily-board .board-copy{background:#fff;border:1px solid rgba(47,168,247,.14);border-radius:16px;padding:26px}.topic-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.topic-row{display:flex;justify-content:space-between;gap:18px;background:#fff;border:1px solid rgba(47,168,247,.14);border-radius:12px;padding:15px 17px}.topic-row strong{color:#137CD8}.mini-note{background:#F4F8FF;border-left:4px solid #2FA8F7;border-radius:10px;padding:15px 18px;margin:24px 0}.article-body .lead-list{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding:0;list-style:none}.article-body .lead-list li{background:#F7FBFF;border:1px solid rgba(47,168,247,.14);border-radius:12px;padding:14px}
@media(max-width:980px){.daily-lanes{grid-template-columns:1fr 1fr}.daily-board{grid-template-columns:1fr}.topic-list{grid-template-columns:1fr}.article-body .lead-list{grid-template-columns:1fr}}
@media(max-width:520px){.daily-lanes{grid-template-columns:1fr}}