:root{--blue:#0033A0;--blue2:#0052CC;--blue3:#002066;--ink:#0A1628;--text:#1E2A3A;--muted:#4A5568;--soft:#718096;--bg:#FFFFFF;--deep:#F5F7FA;--secondary:#EEF1F6;--border:rgba(0,51,160,.14);--shadow:0 12px 36px rgba(0,33,102,.08);--top:118px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font:inherit}.site-wrap{width:min(1220px,calc(100% - 32px));margin:0 auto}.top-shell{position:fixed;top:0;left:0;right:0;z-index:50}.spine-line{height:18px;background:var(--blue3);color:#fff;font-size:12px}.spine-inner{height:18px;display:flex;align-items:center;justify-content:space-between}.text-action{height:18px;border:0;background:transparent;color:#fff;padding:0 2px;cursor:pointer}.cover-bar{height:60px;background:#fff;border-bottom:1px solid var(--border)}.cover-inner{height:60px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.brand-link{justify-self:start;min-height:44px;display:flex;align-items:center}.brand-logo{display:block;height:36px;max-width:150px;object-fit:contain;object-position:left center}.brand-text{font-size:26px;font-weight:800;color:var(--ink);letter-spacing:-1px}.catalog-btn,.app-link,.btn{min-height:44px;border-radius:10px;padding:9px 16px;border:1px solid var(--blue);display:inline-flex;align-items:center;justify-content:center;font-weight:700}.catalog-btn{justify-self:center;background:#fff;color:var(--blue);cursor:pointer}.app-link{justify-self:end;background:linear-gradient(135deg,#0052CC 0%,#0033A0 50%,#002066 100%);color:#fff;border-color:transparent}.tab-strip{height:40px;background:var(--deep);border-bottom:1px solid var(--border)}.tab-inner{height:40px;display:flex;align-items:center;gap:6px}.tab-link{padding:5px 12px;border-radius:6px;font-size:14px;color:var(--muted)}.tab-link:hover,.tab-link:focus-visible{color:var(--blue);outline:2px solid rgba(0,82,204,.18)}.tab-link.is-active{background:var(--blue);color:#fff}.page-main{padding-top:calc(var(--top) + 34px);min-height:60vh}.hero,.page-hero{padding:26px 0 18px}.hero-media,.media-frame{background:var(--deep);border:1px solid var(--border);border-radius:14px;display:flex;align-items:center;justify-content:center;overflow:hidden}.hero-media{max-height:300px;min-height:180px}.hero-media img{width:100%;height:auto;max-height:300px;object-fit:contain}.media-frame{min-height:180px;padding:14px}.media-frame img{width:100%;max-height:240px;object-fit:contain;object-position:center}.app-frame img{max-height:420px}.eyebrow{color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.12em;margin:20px 0 8px}.hero h1,.page-hero h1{font-size:clamp(28px,3vw,32px);line-height:1.25;color:var(--ink);margin:6px 0 12px}.lead{max-width:880px;color:var(--muted);font-size:16px}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.btn.primary{background:linear-gradient(135deg,#0052CC 0%,#0033A0 50%,#002066 100%);color:#fff;border-color:transparent}.btn.secondary{background:#fff;color:var(--blue)}section{scroll-margin-top:145px}.section{padding:34px 0}.section.alt{background:var(--deep)}.section h2{margin:0 0 8px;color:var(--ink);font-size:24px;line-height:1.35}.section-intro{margin:0 0 20px;color:var(--muted);max-width:880px}.grid-2,.grid-3,.grid-4,.grid-6{display:grid;gap:16px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.grid-6{grid-template-columns:repeat(3,minmax(0,1fr))}.card,.panel,.faq-item{background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow)}.card{padding:18px}.card h3,.panel h3{margin:0 0 8px;color:var(--ink);font-size:18px}.card p,.panel p{margin:0;color:var(--muted)}.card .small-link,.text-link{display:inline-block;margin-top:12px;color:var(--blue);font-weight:700}.color-chip{height:8px;width:52px;border-radius:3px;background:var(--blue2);margin-bottom:12px}.color-chip.dark{background:var(--blue3)}.feature-split{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);gap:28px;align-items:center}.number-list{display:grid;gap:10px}.number-item{display:grid;grid-template-columns:54px 1fr;gap:12px;padding:14px 0;border-bottom:1px solid var(--border)}.number-item:last-child{border-bottom:0}.num{font-size:30px;font-weight:900;color:var(--blue)}.shelf-list{display:grid;gap:10px}.shelf-row{display:grid;grid-template-columns:88px 1fr auto;gap:16px;align-items:center;padding:16px 0;border-bottom:1px solid var(--border)}.shelf-row:last-child{border-bottom:0}.status-card{padding:18px;background:#fff;border:1px solid var(--border);border-radius:12px}.status-card b{display:block;color:var(--blue);margin-bottom:6px}.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px}.article-body{min-width:0}.article-body h2{font-size:22px;color:var(--ink);margin:28px 0 10px}.article-body h3{font-size:18px;color:var(--ink);margin:22px 0 8px}.article-body p{margin:0 0 16px;color:var(--text)}.aside-card{position:sticky;top:150px;align-self:start;background:var(--deep);border:1px solid var(--border);border-radius:14px;padding:18px}.aside-card h3{margin-top:0;color:var(--ink)}.aside-card a{display:block;padding:8px 0;color:var(--blue);border-bottom:1px solid var(--border)}.aside-card a:last-child{border-bottom:0}.quote-block{padding:18px 20px;border-left:4px solid var(--blue);background:var(--deep);border-radius:0 12px 12px 0;margin:18px 0}.quote-block b{color:var(--blue)}.faq-list{display:grid;gap:14px}.faq-item{padding:20px}.faq-item h2{font-size:18px;margin:0 0 8px}.faq-item p{margin:0;color:var(--muted)}.site-footer{background:#0A1628;color:#A0AEC0;padding:44px 0 calc(28px + env(safe-area-inset-bottom))}.footer-top{display:grid;grid-template-columns:1.2fr 2fr;gap:34px}.footer-logo{height:32px;max-width:140px;object-fit:contain;object-position:left center;display:block;margin-bottom:10px}.footer-brand strong{color:#fff;font-size:22px;margin-right:8px}.footer-brand p{max-width:430px}.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.footer-groups h3{color:#fff;font-size:15px;margin:0 0 10px}.footer-groups a{display:block;padding:3px 0;color:#A0AEC0}.footer-groups a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:24px;padding-top:18px;font-size:13px}.overlay{position:fixed;inset:0;background:rgba(10,22,40,.36);z-index:70;opacity:0;visibility:hidden;pointer-events:none;transition:.18s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.catalog-panel,.search-panel{position:fixed;z-index:80;left:0;right:0;top:78px;visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-8px);transition:.18s}.catalog-panel{background:#fff;border-bottom:1px solid var(--border);box-shadow:var(--shadow);max-height:50vh;overflow:auto}.catalog-panel.is-open,.search-panel.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:none}.catalog-head{min-height:58px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}.catalog-brand{display:flex;align-items:center;gap:10px}.catalog-logo{height:30px;max-width:130px;object-fit:contain}.close-btn{min-height:44px;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--blue);padding:8px 14px;cursor:pointer}.catalog-body{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding-top:18px;padding-bottom:24px}.catalog-group h3{margin:0 0 8px;color:var(--ink)}.catalog-group a{display:block;padding:8px 0;border-bottom:1px solid var(--border)}.catalog-group b{display:block;color:var(--blue)}.catalog-group span{display:block;font-size:12px;color:var(--soft);line-height:1.5}.search-panel{background:transparent}.search-card{background:#fff;border:1px solid var(--border);border-radius:0 0 14px 14px;box-shadow:var(--shadow);padding:18px}.search-head{display:flex;align-items:center;justify-content:space-between}.search-box{margin:14px 0;padding:14px 16px;border:1px solid var(--border);border-radius:10px;color:var(--soft);background:var(--deep)}.search-presets{display:flex;flex-wrap:wrap;gap:10px}.search-presets a{padding:8px 12px;border:1px solid var(--blue);color:var(--blue);border-radius:8px}.panel-open{overflow:hidden}.mobile-bottom{display:none}
@media(max-width:900px){.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3,.grid-6{grid-template-columns:repeat(2,1fr)}.feature-split,.article-wrap,.footer-top{grid-template-columns:1fr}.aside-card{position:static}.footer-groups{grid-template-columns:repeat(2,1fr)}.catalog-body{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){:root{--top:78px}.tab-strip{display:none}.page-main{padding-top:calc(var(--top) + 26px);padding-bottom:62px}.cover-inner{grid-template-columns:1fr auto 1fr;gap:8px}.brand-logo{height:30px;max-width:110px}.catalog-btn,.app-link{padding:7px 10px;min-width:44px}.app-link{font-size:14px}.hero{padding-top:18px}.hero-media{min-height:140px}.grid-2,.grid-3,.grid-4,.grid-6{grid-template-columns:1fr}.feature-split{gap:18px}.shelf-row{grid-template-columns:64px 1fr}.shelf-row .text-link{grid-column:2}.catalog-panel{max-height:66vh;top:78px}.catalog-body{grid-template-columns:1fr}.search-panel{top:78px}.search-card{width:calc(100% - 20px);background:var(--deep)}.mobile-bottom{position:fixed;display:grid;grid-template-columns:repeat(5,1fr);left:0;right:0;bottom:0;z-index:60;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--border)}.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(--blue);color:#fff}.site-footer{padding-bottom:calc(78px + env(safe-area-inset-bottom))}}
@media(max-width:420px){.site-wrap{width:min(100% - 32px,1220px)}.catalog-btn{font-size:14px}.app-link{font-size:13px;padding-inline:8px}.footer-groups{grid-template-columns:1fr 1fr}}