:root{
--bg:#EEF5FB;--deep:#E3EEF7;--white:#FFFFFF;--soft:#D7E8F4;--ink:#10263A;--text:#243848;--muted:#5A7388;--quiet:#7E93A6;--blue:#3B9FE0;--bright:#62B7EE;--steel:#1E6FB8;--ice:#A9D6F2;--mint:#2FA8A0;--line:rgba(30,111,184,.16);--line-strong:rgba(59,159,224,.38);--shadow:0 16px 40px rgba(16,38,58,.08);--radius:14px;--shell:1220px;}
*{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}body.panel-open{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}img{max-width:100%}.shell{width:min(calc(100% - 32px),var(--shell));margin:0 auto}.site-header{position:fixed;inset:0 0 auto;z-index:60}.brand-line{height:18px;background:var(--steel);color:#fff}.brand-line-inner{height:18px;display:flex;align-items:center;justify-content:space-between;font-size:11px;line-height:1}.micro-brand{font-weight:700;letter-spacing:.02em}.line-action{border:0;background:transparent;color:#fff;height:18px;padding:0 2px;cursor:pointer;font-size:11px}.window-bar{height:62px;background:rgba(255,255,255,.96);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:12px}.brand-home{justify-self:start;display:flex;align-items:center;min-width:0}.brand-logo{display:block;width:auto;max-width:180px;height:34px;object-fit:contain;object-position:left center}.brand-text{font-size:21px;font-weight:800;color:var(--ink)}.book-toggle{justify-self:center;min-width:88px;height:44px;border:1px solid var(--line-strong);background:var(--deep);color:var(--steel);border-radius:10px;font-weight:800;cursor:pointer}.app-link{justify-self:end;min-height:44px;display:inline-flex;align-items:center;padding:0 18px;border-radius:10px;color:#fff;background:linear-gradient(135deg,var(--bright) 0%,var(--blue) 48%,var(--steel) 100%);font-weight:800}.tab-track{height:40px;background:var(--deep);border-bottom:1px solid var(--line)}.tab-track-inner{height:40px;display:flex;align-items:center;gap:4px}.tab-link{height:30px;display:flex;align-items:center;padding:0 14px;border-radius:8px;color:var(--steel);font-size:14px;font-weight:700}.tab-link:hover,.tab-link:focus-visible{background:#fff;outline:none}.tab-link.is-active{background:var(--blue);color:#fff}.site-main{padding-top:120px;min-height:60vh}.section{padding:58px 0}.section-tight{padding:40px 0}.section-white{background:var(--white)}.section-deep{background:var(--deep)}.section-soft{background:var(--soft)}.section-title{margin:0 0 12px;color:var(--ink);font-size:clamp(24px,3vw,32px);line-height:1.25}.section-lead{max-width:760px;margin:0;color:var(--muted)}.eyebrow{display:inline-block;margin-bottom:8px;color:var(--steel);font-weight:800;font-size:13px;letter-spacing:.08em}.page-hero{padding:54px 0 40px;background:linear-gradient(180deg,#f7fbfe 0%,var(--bg) 100%)}.page-hero h1{margin:0 0 16px;color:var(--ink);font-size:clamp(28px,4vw,34px);line-height:1.2}.page-hero p{max-width:800px;margin:0;color:var(--muted)}.hero-banner{background:var(--deep);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);overflow:hidden}.media-slot{display:flex;align-items:center;justify-content:center;min-height:180px;background:linear-gradient(135deg,#fafdff,var(--deep));border:1px solid var(--line);border-radius:14px;overflow:hidden}.media-slot.banner{max-height:300px;aspect-ratio:16/9}.media-slot img{width:100%;height:100%;max-height:240px;object-fit:contain;object-position:center}.media-slot.banner img{max-height:300px}.media-slot.app-media img{max-height:420px}.fallback-title{color:var(--steel);font-size:clamp(28px,5vw,52px);font-weight:900;letter-spacing:-.04em}.cover-copy{padding:28px 30px 32px}.cover-copy h1{font-size:clamp(28px,5vw,38px);margin:0 0 12px;color:var(--ink);line-height:1.2}.cover-copy p{max-width:850px;margin:0;color:var(--muted)}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:10px;font-weight:800}.btn-primary{color:#fff;background:linear-gradient(135deg,var(--bright) 0%,var(--blue) 48%,var(--steel) 100%)}.btn-secondary{color:var(--steel);background:#fff;border:1px solid var(--line-strong)}.btn:hover,.btn:focus-visible,.app-link:hover,.app-link:focus-visible,.book-toggle:hover,.book-toggle:focus-visible{transform:translateY(-1px);box-shadow:0 10px 24px rgba(30,111,184,.14);outline:2px solid rgba(59,159,224,.2);outline-offset:2px}.tag-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.tag-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;min-height:126px}.tag-card:nth-child(2n) .tag-mark{background:var(--mint)}.tag-mark{display:inline-block;width:34px;height:6px;border-radius:4px;background:var(--bright);margin-bottom:14px}.tag-card h3{margin:0 0 6px;color:var(--ink);font-size:17px}.tag-card p{margin:0 0 10px;color:var(--muted);font-size:14px}.text-link{color:var(--steel);font-weight:800}.split{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:28px;align-items:center}.number-list{display:grid;gap:10px;margin-top:20px}.number-item{display:grid;grid-template-columns:54px 1fr;gap:14px;align-items:start;padding:14px 0;border-top:1px solid var(--line)}.number-item strong{font-size:26px;color:var(--steel);line-height:1}.number-item h3{margin:0;color:var(--ink);font-size:17px}.number-item p{margin:4px 0 0;color:var(--muted);font-size:14px}.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.content-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px;box-shadow:0 10px 26px rgba(16,38,58,.05)}.content-card .media-slot{min-height:170px}.content-card h3{margin:16px 0 8px;color:var(--ink)}.content-card p{margin:0;color:var(--muted);font-size:14px}.six-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.mini-card{padding:20px;background:#fff;border:1px solid var(--line);border-radius:12px}.mini-card h3{margin:0 0 8px;color:var(--ink)}.mini-card p{margin:0;color:var(--muted);font-size:14px}.rack-list{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.rack-item{display:flex;justify-content:space-between;gap:18px;align-items:center;padding:18px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:10px}.rack-item h3{margin:0;color:var(--ink);font-size:16px}.rack-item p{margin:3px 0 0;color:var(--muted);font-size:13px}.rack-item span{color:var(--steel);font-weight:800;white-space:nowrap}.big-numbers{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.big-number{padding:20px 16px;background:#fff;border:1px solid var(--line);border-radius:12px}.big-number b{display:block;font-size:34px;line-height:1;color:var(--steel);margin-bottom:14px}.big-number h3{margin:0 0 8px;color:var(--ink);font-size:16px}.big-number p{margin:0;color:var(--muted);font-size:13px}.status-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.status-card{padding:20px;background:#fff;border:1px solid var(--line);border-radius:12px}.status-dot{width:10px;height:10px;border-radius:50%;background:var(--mint);margin-bottom:14px}.status-card:nth-child(2) .status-dot{background:var(--bright)}.status-card:nth-child(3) .status-dot{background:var(--steel)}.status-card:nth-child(4) .status-dot{background:var(--quiet)}.status-card h3{margin:0 0 8px;color:var(--ink)}.status-card p{margin:0;color:var(--muted);font-size:14px}.prose{max-width:920px}.prose h2{margin:34px 0 10px;color:var(--ink);font-size:22px}.prose h3{margin:24px 0 8px;color:var(--ink);font-size:18px}.prose p{margin:0 0 16px;color:var(--text)}.prose ul{padding-left:22px}.prose li{margin-bottom:8px}.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.info-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}.info-card h2,.info-card h3{margin:0 0 10px;color:var(--ink)}.info-card p{margin:0;color:var(--muted)}.faq-list{display:grid;gap:14px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}.faq-item h2{margin:0 0 9px;color:var(--ink);font-size:18px}.faq-item p{margin:0;color:var(--text)}.site-footer{background:var(--ink);color:#c7d8e6;padding:48px 0 calc(26px + env(safe-area-inset-bottom))}.footer-grid{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:28px}.footer-brand-link{display:flex;align-items:center;gap:12px}.footer-logo{width:auto;height:32px;max-width:160px;object-fit:contain;filter:brightness(0) invert(1)}.footer-brand strong{display:block;color:#fff}.footer-brand small{display:block;color:#9eb7ca}.footer-brand p{max-width:390px;color:#afc3d3;font-size:14px}.footer-col h2{font-size:14px;color:#fff;margin:0 0 12px}.footer-col a{display:block;font-size:14px;color:#c7d8e6;margin:7px 0}.footer-col a:hover,.footer-col a:focus-visible,.footer-bottom a:hover,.footer-bottom a:focus-visible{color:#fff;text-decoration:underline}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:30px;padding-top:20px;display:flex;justify-content:space-between;gap:16px;color:#9eb7ca;font-size:13px}.overlay{position:fixed;inset:0;background:rgba(16,38,58,.32);z-index:70;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.window-book,.search-panel{position:fixed;z-index:80;top:80px;left:0;right:0;visibility:hidden;opacity:0;pointer-events:none;transform:translateY(-10px);transition:.2s}.window-book.is-open,.search-panel.is-open{visibility:visible;opacity:1;pointer-events:auto;transform:translateY(0)}.book-inner,.search-inner{background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:var(--shadow);max-height:50vh;overflow:auto}.book-head,.search-head{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:16px 20px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;z-index:2}.book-brand{display:flex;align-items:center;gap:10px;color:var(--ink)}.book-logo{height:30px;width:auto;max-width:150px;object-fit:contain}.close-control{min-width:64px;height:44px;border:1px solid var(--line);background:var(--deep);color:var(--steel);border-radius:10px;font-weight:800;cursor:pointer}.book-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:22px}.book-group h2{margin:0 0 10px;color:var(--steel);font-size:15px}.book-group a{display:block;padding:8px 0;border-top:1px solid rgba(30,111,184,.09)}.book-group strong{display:block;color:var(--ink);font-size:14px}.book-group span{display:block;color:var(--muted);font-size:12px;margin-top:2px}.search-inner{padding-bottom:20px}.search-head{position:static}.search-head h2{margin:2px 0 0;color:var(--ink);font-size:22px}.search-box{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:12px;margin:20px;padding:12px 14px;border:1px solid var(--line-strong);border-radius:12px;background:var(--bg)}.search-box span{font-size:13px;font-weight:800;color:var(--steel)}.search-box input{width:100%;border:0;outline:0;background:transparent;color:var(--ink);min-height:38px}.search-presets{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding:0 20px}.search-presets a{padding:14px;background:var(--deep);border:1px solid var(--line);border-radius:10px;color:var(--ink);font-weight:800}.search-presets span{display:block;color:var(--muted);font-weight:400;font-size:12px;margin-top:3px}.mobile-nav{display:none}.notice{padding:15px 18px;border:1px solid var(--line-strong);border-left:4px solid var(--steel);background:#fff;border-radius:10px;color:var(--muted);font-size:14px}.app-layout{display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:32px;align-items:center}.app-icon{width:64px;height:64px;object-fit:contain;border-radius:14px;border:1px solid var(--line);background:#fff}.step-list{counter-reset:step;display:grid;gap:12px}.step{counter-increment:step;display:grid;grid-template-columns:46px 1fr;gap:14px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}.step:before{content:counter(step,decimal-leading-zero);color:var(--steel);font-weight:900;font-size:24px;line-height:1}.step h3{margin:0 0 6px;color:var(--ink)}.step p{margin:0;color:var(--muted)}
@media(max-width:920px){.card-grid{grid-template-columns:repeat(2,1fr)}.six-grid{grid-template-columns:repeat(2,1fr)}.big-numbers{grid-template-columns:repeat(3,1fr)}.status-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}.footer-brand{grid-column:1/-1}.book-groups{grid-template-columns:repeat(2,1fr)}.rack-list{grid-template-columns:repeat(2,1fr)}.split,.app-layout{grid-template-columns:1fr}}
@media(max-width:700px){.tab-track{display:none}.site-main{padding-top:80px;padding-bottom:calc(56px + env(safe-area-inset-bottom))}.window-book,.search-panel{top:80px}.window-bar-inner{grid-template-columns:minmax(0,1fr) auto auto;gap:8px}.brand-logo{max-width:118px;height:30px}.brand-text{font-size:17px}.book-toggle{min-width:72px;padding:0 12px}.app-link{min-width:70px;padding:0 12px;font-size:14px}.section{padding:42px 0}.page-hero{padding:38px 0 28px}.cover-copy{padding:22px 18px 24px}.tag-grid,.six-grid,.info-grid,.search-presets{grid-template-columns:1fr}.card-grid,.status-grid,.rack-list{grid-template-columns:1fr}.big-numbers{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr);gap:22px}.footer-brand{grid-column:1/-1}.footer-bottom{flex-direction:column}.mobile-nav{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:0;right:0;bottom:0;z-index:65;background:#fff;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);min-height:50px}.mobile-nav a{min-height:50px;display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--steel);font-weight:800}.mobile-nav a.is-active{background:var(--blue);color:#fff}.book-inner{width:100%;max-height:66vh;border-radius:0}.book-groups{grid-template-columns:1fr 1fr;padding:16px;gap:18px}.search-panel{inset:80px 0 0;top:80px;background:var(--deep)}.search-inner{width:100%;height:100%;max-height:none;border:0;border-radius:0;background:var(--deep);overflow:auto}.search-head{background:var(--deep)}.search-box{background:#fff}.search-presets{padding:0 16px}.media-slot.banner{aspect-ratio:3/2}.page-hero h1{font-size:28px}.shell{width:min(calc(100% - 32px),var(--shell))}}
@media(max-width:430px){.book-groups{grid-template-columns:1fr}.big-numbers{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.brand-line-inner{font-size:10px}.app-link{padding:0 9px}.book-toggle{min-width:66px}.brand-logo{max-width:100px}.brand-text{font-size:16px}}