:root{--blue:#0033A0;--bright:#0052CC;--deep:#002066;--ink:#0A1628;--text:#1E2A3A;--muted:#4A5568;--aux:#718096;--bg:#fff;--soft:#F5F7FA;--soft2:#EEF1F6;--border:rgba(0,51,160,.14);--shadow:0 12px 36px rgba(0,33,102,.08);--header-h:134px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}a:focus-visible,button:focus-visible{outline:3px solid rgba(0,82,204,.35);outline-offset:2px}img{display:block;max-width:100%;height:auto}.shell{width:min(1220px,calc(100% - 32px));margin:0 auto}.site-header{position:fixed;top:0;left:0;right:0;z-index:1000}.blue-line{height:22px;background:var(--deep);color:#fff;font-size:12px}.blue-line-inner{height:22px;display:flex;align-items:center;justify-content:space-between}.text-button,.catalog-button,.close-button{font:inherit;border:0;cursor:pointer}.text-button{background:none;color:#fff;min-height:22px;padding:0 4px}.museum-head{height:68px;background:#fff;border-bottom:1px solid var(--border)}.museum-head-inner{height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.brand-home{justify-self:start;display:inline-flex;align-items:center;min-height:44px}.site-logo{height:34px;width:auto;max-width:180px;object-fit:contain}.brand-fallback{font-size:28px;font-weight:800;color:var(--deep);letter-spacing:.04em}.catalog-button{min-width:84px;min-height:44px;padding:0 18px;border:1px solid var(--blue);background:#fff;color:var(--blue);border-radius:10px;font-weight:700}.app-link{justify-self:end;min-height:44px;display:inline-flex;align-items:center;padding:0 15px;border-radius:10px;background:linear-gradient(135deg,var(--bright),var(--blue),var(--deep));color:#fff;font-weight:700}.tab-strip{height:44px;background:var(--soft);border-bottom:1px solid var(--border)}.tab-strip-inner{height:100%;display:flex;align-items:center;gap:8px}.tab-link{height:32px;display:inline-flex;align-items:center;padding:0 12px;border-radius:8px;color:var(--ink);font-size:14px}.tab-link:hover{background:#fff}.tab-link.is-active{background:var(--blue);color:#fff}.site-main{padding-top:calc(var(--header-h) + 24px);min-height:60vh}.page-hero,.content-section{padding:28px 0}.page-hero{padding-top:22px}.eyebrow{display:inline-flex;align-items:center;min-height:30px;padding:0 10px;border-radius:8px;background:var(--soft2);color:var(--blue);font-weight:700;font-size:13px}.page-hero h1{margin:12px 0 12px;color:var(--ink);font-size:clamp(28px,4vw,32px);line-height:1.25}.lead{max-width:850px;color:var(--muted);font-size:17px}.hero-actions,.button-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}.btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:10px;font-weight:700}.btn-primary{background:linear-gradient(135deg,var(--bright),var(--blue),var(--deep));color:#fff}.btn-secondary{background:#fff;color:var(--blue);border:1px solid var(--blue)}.media-slot{width:100%;background:var(--soft2);border:1px solid var(--border);border-radius:14px;display:flex;align-items:center;justify-content:center;overflow:visible}.media-slot.banner{max-height:300px;min-height:180px}.media-slot.content-image{min-height:180px}.media-slot.app-visual{min-height:240px}.media-slot img{width:100%;max-width:100%;height:auto;object-fit:contain;object-position:center;border-radius:14px}.media-slot.banner img{max-height:300px}.media-slot.content-image img{max-height:240px}.media-slot.app-visual img{width:auto;max-width:100%;max-height:420px}.grid{display:grid;gap:18px}.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,.article-block,.number-row,.shelf-row,.timeline-item{background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);border-radius:14px;padding:22px}.card h2,.card h3,.panel h2,.article-block h2,.content-section h2{color:var(--ink);margin-top:0}.card p:last-child,.panel p:last-child,.article-block p:last-child{margin-bottom:0}.tag-chip{display:inline-block;padding:4px 8px;border-radius:7px;background:var(--blue);color:#fff;font-size:12px}.tag-chip.alt{background:var(--bright)}.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(--aux);max-width:600px}.number-list{display:grid;gap:12px}.number-row{display:grid;grid-template-columns:64px 1fr;gap:14px;align-items:start}.number{font-size:30px;font-weight:800;color:var(--blue);line-height:1}.number-row h3{margin:0 0 6px;color:var(--ink)}.shelf-list{display:grid;gap:10px}.shelf-row{display:grid;grid-template-columns:140px 1fr auto;gap:16px;align-items:center}.shelf-row strong{color:var(--ink)}.shelf-row span{color:var(--muted)}.shelf-row a{color:var(--blue);font-weight:700}.timeline{position:relative;display:grid;gap:14px}.timeline:before{content:"";position:absolute;left:20px;top:12px;bottom:12px;width:2px;background:var(--border)}.timeline-item{position:relative;padding-left:56px}.timeline-item:before{content:"";position:absolute;left:14px;top:26px;width:14px;height:14px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 6px #fff}.timeline-item h3{margin:0 0 6px;color:var(--ink)}.opinion{border-left:4px solid var(--blue);padding-left:16px;color:var(--muted)}.faq-list{display:grid;gap:14px}.faq-item{border:1px solid var(--border);border-radius:14px;padding:20px;background:#fff}.faq-item h2{font-size:18px;margin:0 0 8px}.notice{padding:16px 18px;border-radius:12px;background:var(--soft2);color:var(--muted);border:1px solid var(--border)}.site-footer{margin-top:48px;background:var(--ink);color:#A0AEC0;padding:44px 0 90px}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:28px}.footer-logo{height:32px;width:auto;object-fit:contain}.footer-brand strong{display:block;color:#fff;font-size:22px}.footer-brand span{display:block;font-size:12px}.footer-groups{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}.footer-group h2{font-size:14px;color:#fff;margin:0 0 12px}.footer-links{display:flex;flex-wrap:wrap;gap:8px 14px}.footer-links a{font-size:14px}.footer-links a:hover{color:#fff}.footer-note{margin:30px 0 8px;max-width:900px}.copyright{margin:0;font-size:13px}.overlay{position:fixed;inset:0;background:rgba(10,22,40,.46);z-index:1100;visibility:hidden;opacity:0;pointer-events:none;transition:.2s}.overlay.is-open{visibility:visible;opacity:1;pointer-events:auto}.catalog-panel,.search-layer{position:fixed;left:0;right:0;top:90px;z-index:1200;visibility:hidden;opacity:0;pointer-events:none;transform:translateY(-12px);transition:.2s}.catalog-panel.is-open,.search-layer.is-open{visibility:visible;opacity:1;pointer-events:auto;transform:translateY(0)}.catalog-panel{background:#fff;border-bottom:1px solid var(--border);max-height:calc(100vh - 90px);overflow-y:auto}.catalog-inner{padding:18px 0 28px}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:16px}.panel-brand{display:flex;align-items:center;gap:10px}.panel-logo{height:30px;width:auto}.close-button{min-height:44px;padding:0 14px;border-radius:10px;background:var(--soft2);color:var(--deep);font-weight:700}.catalog-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;margin-top:18px}.catalog-group h2{font-size:15px;color:var(--blue);margin:0 0 10px}.catalog-item{display:block;padding:12px;border-radius:10px;border:1px solid transparent}.catalog-item:hover{background:var(--soft);border-color:var(--border)}.catalog-item strong{display:block;color:var(--ink);margin-bottom:3px}.catalog-item span{display:block;color:var(--muted);font-size:13px;line-height:1.55}.search-layer{background:transparent}.search-card{background:#fff;border:1px solid var(--border);border-radius:0 0 16px 16px;box-shadow:var(--shadow);padding:20px}.search-look{margin-top:18px;border:1px solid var(--border);border-radius:10px;min-height:52px;display:flex;align-items:center;padding:0 16px;color:var(--aux);background:var(--soft)}.quick-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.quick-links a{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--border);border-radius:10px;color:var(--blue);background:#fff}.panel-open{overflow:hidden}.mobile-bottom{display:none}.cover-copy{padding:24px 0 0}.cover-copy h1{margin:8px 0;color:var(--ink);font-size:32px}.home-title{font-size:14px;color:var(--blue);font-weight:700}.feature-grid .card{min-height:170px}.compact-media{margin-bottom:16px}.prose{max-width:920px}.prose h2{margin-top:30px}.prose p{margin:0 0 16px}.legal-list{display:grid;gap:16px}.split{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(280px,.9fr);gap:24px;align-items:start}
@media(max-width:900px){.grid-4,.catalog-grid,.footer-groups{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3,.grid-6{grid-template-columns:repeat(2,minmax(0,1fr))}.split{grid-template-columns:1fr}.shelf-row{grid-template-columns:100px 1fr}.shelf-row a{grid-column:2}.media-slot.banner{min-height:160px}.media-slot.banner img{max-height:260px}}
@media(max-width:760px){:root{--header-h:90px}.tab-strip{display:none}.site-main{padding-top:calc(var(--header-h) + 18px)}.museum-head-inner{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:8px}.site-logo{height:30px;max-width:120px}.brand-fallback{font-size:24px}.catalog-button{min-width:68px;padding:0 12px}.app-link{padding:0 10px;font-size:14px}.shell{width:min(100% - 32px,1220px)}.grid-2,.grid-3,.grid-4,.grid-6,.footer-groups,.catalog-grid{grid-template-columns:1fr}.catalog-panel,.search-layer{top:90px}.catalog-panel{max-height:calc(100vh - 90px)}.search-layer{inset:90px 0 0;background:var(--soft);overflow-y:auto}.search-card{width:100%;min-height:100%;border:0;border-radius:0;box-shadow:none}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:1050;display:grid;grid-template-columns:repeat(5,1fr);min-height:50px;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(76px + env(safe-area-inset-bottom))}.media-slot.banner{min-height:130px}.media-slot.banner img{max-height:220px}.media-slot.content-image{min-height:120px}.media-slot.content-image img{max-height:190px}.media-slot.app-visual img{max-height:340px;width:auto}.page-hero,.content-section{padding:22px 0}.number-row{grid-template-columns:52px 1fr}.shelf-row{grid-template-columns:1fr}.shelf-row a{grid-column:auto}.section-head{align-items:start;flex-direction:column}.cover-copy h1{font-size:28px}.catalog-item{padding:11px 0}.catalog-grid{gap:14px}}