:root{--bg:#EEF5FB;--deep:#E3EEF7;--card:#fff;--soft:#D7E8F4;--ink:#10263A;--text:#243848;--muted:#5A7388;--aux:#7E93A6;--brand:#3B9FE0;--bright:#62B7EE;--steel:#1E6FB8;--ice:#A9D6F2;--mint:#2FA8A0;--line:rgba(30,111,184,.16);--strong:rgba(59,159,224,.38);--shadow:0 16px 40px rgba(16,38,58,.08);--radius:14px;--shell:min(1220px,calc(100% - 32px));}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.shell{width:var(--shell);margin-inline:auto}.site-header{position:fixed;inset:0 0 auto;z-index:80}.brand-line{height:18px;background:var(--steel);color:#fff;font-size:11px;line-height:18px}.brand-line-inner{height:18px;display:flex;align-items:center;justify-content:space-between}.line-search{border:0;background:transparent;color:#fff;height:18px;line-height:18px;padding:0 6px;cursor:pointer}.window-bar{height:62px;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.window-bar-inner{height:62px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.brand-home{justify-self:start;display:flex;align-items:center;min-width:44px;min-height:44px}.brand-logo{height:34px;max-width:190px;object-fit:contain;object-position:left center}.brand-word{font-size:20px;font-weight:800;color:var(--ink)}.book-button,.app-link,.close-button{min-height:44px;border:1px solid var(--strong);border-radius:10px;padding:8px 16px;background:#fff;color:var(--steel);cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.book-button{justify-self:center}.app-link{justify-self:end;background:linear-gradient(135deg,var(--bright) 0%,var(--brand) 48%,var(--steel) 100%);color:#fff;border-color:transparent}.tab-rail{height:40px;background:var(--ice);border-bottom:1px solid var(--line)}.tab-rail-inner{display:flex;align-items:center;height:40px;gap:4px}.tab-rail a{height:30px;display:flex;align-items:center;padding:0 13px;border-radius:7px;color:var(--ink);font-size:14px}.tab-rail a.is-active{background:var(--brand);color:#fff}.page-main{padding-top:120px;min-height:60vh}.page-hero{padding:48px 0 28px}.eyebrow{font-size:14px;font-weight:700;color:var(--steel);letter-spacing:.08em}.page-hero h1,.landing-copy h1{margin:.2em 0 .35em;color:var(--ink);font-size:clamp(28px,4vw,36px);line-height:1.25}.lead{font-size:17px;color:var(--muted);max-width:840px}.panel,.content-card,.feature-card,.status-card,.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.panel{padding:28px}.section{padding:26px 0 44px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:18px}.section-head h2{margin:0;color:var(--ink);font-size:24px}.section-head p{margin:0;color:var(--muted);max-width:700px}.media-slot{background:linear-gradient(135deg,#fff,var(--deep));border:1px solid var(--line);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;overflow:hidden;min-height:180px}.media-slot img{width:100%;height:100%;max-height:240px;object-fit:contain;object-position:center}.hero-image{max-height:300px;min-height:220px}.hero-image img{max-height:300px}.app-image{min-height:280px}.app-image img{max-height:420px;object-fit:contain}.landing{padding:34px 0 22px}.landing-copy{padding:24px 0 10px;max-width:840px}.button-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}.primary-button,.secondary-button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;padding:9px 18px;font-weight:700}.primary-button{background:linear-gradient(135deg,var(--bright) 0%,var(--brand) 48%,var(--steel) 100%);color:#fff}.secondary-button{background:#fff;border:1px solid var(--strong);color:var(--steel)}.tag-grid,.card-grid,.six-grid,.status-grid,.number-grid{display:grid;gap:16px}.tag-grid{grid-template-columns:repeat(3,1fr)}.tag-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;min-height:132px}.tag-card b{display:inline-block;color:var(--steel);margin-bottom:8px}.tag-card:nth-child(2n) b{color:var(--mint)}.tag-card p{margin:0 0 12px;color:var(--muted)}.tag-card a{color:var(--steel);font-weight:700}.card-grid{grid-template-columns:repeat(4,1fr)}.feature-card{overflow:hidden}.feature-card .media-slot{border:0;border-radius:0;box-shadow:none;height:200px}.feature-card article{padding:18px}.feature-card h3{margin:0 0 8px;color:var(--ink)}.feature-card p{margin:0;color:var(--muted)}.two-col{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,.72fr);gap:24px;align-items:center}.number-list{display:grid;gap:10px}.number-row{display:grid;grid-template-columns:56px 1fr;gap:14px;align-items:start;padding:16px 0;border-bottom:1px solid var(--line)}.number-row:last-child{border-bottom:0}.number{font-size:28px;font-weight:900;color:var(--steel);line-height:1}.number-row h3{margin:0 0 5px;color:var(--ink)}.number-row p{margin:0;color:var(--muted)}.six-grid{grid-template-columns:repeat(3,1fr)}.mini-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}.mini-card h3{margin:0 0 8px;color:var(--ink)}.mini-card p{margin:0;color:var(--muted)}.rack-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.rack-item{background:#fff;border-left:4px solid var(--brand);border-radius:10px;padding:16px 18px}.rack-item:nth-child(2n){border-left-color:var(--mint)}.rack-item h3{margin:0 0 5px;color:var(--ink)}.rack-item p{margin:0;color:var(--muted)}.number-grid{grid-template-columns:repeat(5,1fr)}.big-number{background:var(--steel);color:#fff;border-radius:12px;padding:20px;min-height:150px}.big-number b{font-size:34px;display:block}.big-number h3{margin:8px 0 4px}.big-number p{margin:0;color:#e5f3ff;font-size:14px}.status-grid{grid-template-columns:repeat(4,1fr)}.status-card{padding:20px}.status-card h3{margin:0 0 8px;color:var(--ink)}.status-card p{margin:0;color:var(--muted)}.content-flow{display:grid;gap:18px}.content-card{padding:24px}.content-card h2,.content-card h3{color:var(--ink);margin-top:0}.content-card p:last-child{margin-bottom:0}.article-body{max-width:900px}.article-body p{margin:0 0 1.1em}.article-body h2{margin:1.5em 0 .5em;color:var(--ink);font-size:23px}.article-body h3{margin:1.2em 0 .45em;color:var(--ink);font-size:19px}.notice{border-left:4px solid var(--mint);background:#fff;padding:18px 20px;border-radius:10px;color:var(--muted)}.app-layout{display:grid;grid-template-columns:minmax(260px,.6fr) minmax(0,1fr);gap:30px;align-items:center}.app-icon{width:64px;height:64px;object-fit:contain}.faq-list{display:grid;gap:14px}.faq-item{padding:20px}.faq-item h2,.faq-item h3{margin:0 0 8px;color:var(--ink);font-size:18px}.faq-item p{margin:0;color:var(--muted)}.site-footer{background:var(--ink);color:#C7D8E6;padding:42px 0 calc(26px + env(safe-area-inset-bottom));margin-top:50px}.footer-brand{display:flex;align-items:flex-start;justify-content:space-between;gap:30px;padding-bottom:28px;border-bottom:1px solid rgba(255,255,255,.12)}.footer-identity{display:flex;align-items:center;gap:14px;min-width:220px}.footer-logo{height:32px;max-width:180px;object-fit:contain}.footer-identity strong{display:block;color:#fff}.footer-identity span{font-size:12px}.footer-brand p{margin:0;max-width:700px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:28px 0}.footer-grid h2{font-size:15px;color:#fff;margin:0 0 10px}.footer-grid a{display:block;color:#C7D8E6;padding:4px 0}.footer-bottom{font-size:13px;color:#9fb7c8}.overlay{position:fixed;inset:0;background:rgba(16,38,58,.42);z-index:88;opacity:0;pointer-events:none;transition:.2s}.overlay.is-active{opacity:1;pointer-events:auto}.site-book,.search-layer{position:fixed;z-index:95;visibility:hidden;pointer-events:none;opacity:0;transition:opacity .18s ease,transform .18s ease}.site-book{top:80px;left:50%;width:min(1220px,calc(100% - 32px));max-height:50vh;overflow:auto;background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:var(--shadow);transform:translate(-50%,-12px)}.site-book.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:translate(-50%,0)}.book-head{width:100%;display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;z-index:2}.book-title{display:flex;align-items:center;gap:10px;color:var(--ink)}.book-logo{height:30px;max-width:170px;object-fit:contain}.book-grid{width:100%;display:grid;grid-template-columns:repeat(4,1fr);gap:22px;padding:20px}.book-grid h2{font-size:15px;margin:0 0 10px;color:var(--steel)}.book-grid a{display:block;padding:9px 0;border-bottom:1px solid var(--line)}.book-grid b{display:block;color:var(--ink);font-size:14px}.book-grid span{display:block;color:var(--muted);font-size:12px;line-height:1.55}.search-layer{top:80px;left:50%;width:min(760px,calc(100% - 32px));transform:translate(-50%,-10px)}.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:translate(-50%,0)}.search-card{background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;padding:20px;box-shadow:var(--shadow)}.search-head{display:flex;align-items:center;justify-content:space-between;color:var(--ink)}.fake-search{margin:16px 0;padding:14px 16px;border:1px solid var(--strong);border-radius:10px;color:var(--aux);background:var(--bg)}.preset-links{display:flex;gap:10px;flex-wrap:wrap}.preset-links a{min-height:44px;display:inline-flex;align-items:center;padding:8px 14px;border:1px solid var(--line);border-radius:10px;color:var(--steel);background:#fff}.layer-open{overflow:hidden}.mobile-bottom{display:none}a:hover{color:var(--steel)}.primary-button:hover,.app-link:hover{color:#fff;filter:brightness(.98)}button:focus-visible,a:focus-visible{outline:3px solid rgba(47,168,160,.42);outline-offset:2px}
@media(max-width:900px){.card-grid{grid-template-columns:repeat(2,1fr)}.six-grid{grid-template-columns:repeat(2,1fr)}.number-grid{grid-template-columns:repeat(2,1fr)}.status-grid{grid-template-columns:repeat(2,1fr)}.two-col,.app-layout{grid-template-columns:1fr}.book-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){:root{--shell:calc(100% - 32px)}.window-bar-inner{grid-template-columns:1fr auto 1fr;gap:8px}.brand-logo{max-width:128px;height:30px}.brand-word{font-size:17px}.book-button,.app-link{padding:7px 10px;font-size:14px}.tab-rail{display:none}.page-main{padding-top:80px;padding-bottom:58px}.page-hero{padding-top:30px}.tag-grid,.card-grid,.six-grid,.status-grid,.rack-list,.number-grid{grid-template-columns:1fr}.hero-image{min-height:180px}.feature-card .media-slot{height:190px}.site-book{top:80px;left:0;transform:translateY(-12px);width:100%;max-height:66vh;border-radius:0}.site-book.is-open{transform:translateY(0)}.book-grid{grid-template-columns:1fr;padding:16px;gap:16px}.book-head{padding-inline:16px}.search-layer{inset:80px 0 0;width:100%;transform:none;background:var(--ice)}.search-layer.is-open{transform:none}.search-card{height:100%;border-radius:0;background:var(--ice);border:0;box-shadow:none;padding:20px 16px}.footer-brand{display:block}.footer-brand p{margin-top:18px}.footer-grid{grid-template-columns:repeat(2,1fr)}.mobile-bottom{position:fixed;z-index:78;display:grid;grid-template-columns:repeat(5,1fr);left:0;right:0;bottom:0;min-height:50px;padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--line);box-shadow:0 -8px 24px rgba(16,38,58,.08)}.mobile-bottom a{min-height:50px;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--muted)}.mobile-bottom a.is-active{background:var(--brand);color:#fff}.site-footer{margin-bottom:50px}.section{padding-bottom:34px}.panel,.content-card{padding:20px}.brand-line-inner{font-size:10px}}