:root{--bg:#fff;--soft:#f5f7fa;--soft2:#eef1f6;--ink:#0a1628;--text:#1e2a3a;--muted:#4a5568;--aux:#718096;--brand:#0033a0;--bright:#0052cc;--deep:#002066;--line:rgba(0,51,160,.14);--shadow:0 12px 36px rgba(0,33,102,.08);--radius:14px;--top-h:134px}
*{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","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.shell{width:min(1220px,calc(100% - 40px));margin:0 auto}.site-fixed-top{position:fixed;z-index:50;top:0;left:0;right:0;background:#fff}.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}.micro-brand{font-weight:700;letter-spacing:.05em}.plain-action{height:22px;border:0;background:transparent;color:#fff;padding:0 2px;cursor:pointer;font:inherit}.masthead{height:68px;background:#fff;border-bottom:1px solid var(--line)}.masthead-inner{height:68px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.brand-mark{display:flex;align-items:center;justify-self:start;min-width:64px}.brand-mark img,.catalog-brand img,.footer-brand img{height:34px;width:auto;object-fit:contain}.brand-text{font-size:26px;font-weight:900;color:var(--deep);letter-spacing:-.04em}.catalog-button,.app-link,.close-button{min-height:44px;border-radius:10px;font-weight:700;font-size:14px}.catalog-button{justify-self:center;border:1px solid var(--brand);background:#fff;color:var(--brand);padding:0 22px;cursor:pointer}.app-link{justify-self:end;display:inline-flex;align-items:center;padding:0 18px;color:#fff;background:linear-gradient(135deg,#0052cc 0%,#0033a0 50%,#002066 100%)}.tab-strip{height:44px;background:var(--soft2);border-bottom:1px solid var(--line)}.tab-strip-inner{height:44px;display:flex;align-items:center;gap:8px}.tab-strip a{display:inline-flex;align-items:center;min-height:32px;padding:0 13px;border-radius:8px;color:var(--muted);font-size:14px;font-weight:700}.tab-strip a:hover,.tab-strip a:focus-visible{background:#fff;color:var(--brand)}.tab-strip a.active{background:var(--brand);color:#fff}.page-main{padding-top:calc(var(--top-h) + 30px)}.page-hero,.section-block{padding:38px 0}.page-hero{padding-top:30px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:800;font-size:13px;letter-spacing:.08em;text-transform:uppercase}.eyebrow:before{content:"";width:24px;height:2px;background:var(--brand)}h1,h2,h3{color:var(--ink);line-height:1.25;margin:0}h1{font-size:clamp(28px,4vw,32px);letter-spacing:-.03em;margin-top:12px}h2{font-size:24px;letter-spacing:-.02em}h3{font-size:18px}.lead{max-width:820px;margin:16px 0 0;color:var(--muted);font-size:17px}.hero-actions,.inline-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.button-primary,.button-secondary{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:10px;font-weight:800}.button-primary{color:#fff;background:linear-gradient(135deg,#0052cc 0%,#0033a0 50%,#002066 100%)}.button-secondary{color:var(--brand);background:#fff;border:1px solid var(--brand)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(0,82,204,.35);outline-offset:3px}.media-slot{width:100%;background:var(--soft2);border:1px solid var(--line);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;overflow:hidden;min-height:180px}.media-slot.banner{max-height:300px;aspect-ratio:16/9}.media-slot.content{height:220px}.media-slot.app-media{min-height:320px;max-height:420px}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.hero-cover{margin-bottom:24px}.home-intro{padding-bottom:34px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:20px}.section-head p{margin:6px 0 0;color:var(--muted)}.section-link{font-weight:800;color:var(--brand);white-space:nowrap}.tag-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.tag-card,.panel-card,.index-card,.policy-card,.qa-item,.shelf-row,.note-card{border:1px solid var(--line);background:#fff;border-radius:var(--radius);box-shadow:var(--shadow)}.tag-card{padding:18px;position:relative;overflow:hidden}.tag-card:before{content:"";display:block;width:42px;height:5px;background:var(--bright);margin-bottom:14px}.tag-card:nth-child(even):before{background:var(--deep)}.tag-card p,.panel-card p,.index-card p,.policy-card p,.note-card p{margin:8px 0 0;color:var(--muted)}.tag-card a,.index-card a{display:inline-flex;margin-top:12px;color:var(--brand);font-weight:800}.number-list{display:grid;gap:10px;margin-top:20px}.number-row{display:grid;grid-template-columns:64px 150px 1fr;gap:18px;align-items:start;padding:16px 0;border-top:1px solid var(--line)}.number-row .num,.rank-num{color:var(--brand);font-size:28px;font-weight:900;line-height:1}.number-row strong{color:var(--ink)}.three-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.panel-card{padding:16px}.panel-card .media-slot{margin-bottom:14px}.panel-card p{font-size:15px}.directory-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:20px}.directory-item{padding:18px;background:var(--soft);border-left:3px solid var(--brand);border-radius:0 12px 12px 0}.directory-item strong{display:block;color:var(--ink);margin-bottom:4px}.theme-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.theme-grid .index-card{padding:18px}.shelf-list{display:grid;gap:10px}.shelf-row{display:grid;grid-template-columns:110px 1fr auto;align-items:center;gap:16px;padding:16px}.shelf-label{font-weight:900;color:var(--brand)}.shelf-row p{margin:2px 0 0;color:var(--muted)}.rank-list{display:grid;gap:0}.rank-row{display:grid;grid-template-columns:70px 1fr;gap:20px;padding:20px 0;border-top:1px solid var(--line)}.rank-row:first-child{border-top:0}.timeline{position:relative;margin-top:10px;padding-left:24px}.timeline:before{content:"";position:absolute;top:8px;bottom:8px;left:5px;width:2px;background:rgba(0,51,160,.2)}.timeline-item{position:relative;padding:0 0 24px 20px}.timeline-item:before{content:"";position:absolute;left:-24px;top:7px;width:12px;height:12px;border:3px solid #fff;border-radius:50%;background:var(--brand);box-shadow:0 0 0 2px var(--brand)}.status{display:inline-flex;padding:3px 8px;border-radius:6px;background:var(--soft2);color:var(--brand);font-size:12px;font-weight:800;margin-bottom:5px}.split{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(280px,.9fr);gap:28px;align-items:start}.copy-stack p{margin:0 0 16px}.copy-stack h2{margin:30px 0 12px}.copy-stack h3{margin:22px 0 8px}.soft-section{background:var(--soft)}.index-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.index-card{padding:20px}.policy-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.policy-card{padding:20px}.long-strip{display:grid;grid-template-columns:160px 1fr;gap:24px;padding:20px 0;border-top:1px solid var(--line)}.long-strip:first-child{border-top:0}.long-strip strong{color:var(--brand)}.article-note{max-width:840px;margin:0 auto}.article-note p{margin:0 0 20px}.editor-mark{display:inline-flex;padding:5px 9px;background:var(--brand);color:#fff;border-radius:7px;font-size:12px;font-weight:800;margin-bottom:18px}.app-layout{display:grid;grid-template-columns:minmax(280px,.72fr) minmax(0,1.28fr);gap:34px;align-items:center}.app-icon{display:flex;align-items:center;gap:14px;margin-bottom:18px}.app-icon img{width:64px;height:64px;object-fit:contain;border-radius:14px}.app-icon strong{font-size:24px;color:var(--ink)}.qa-list{display:grid;gap:12px}.qa-item{padding:20px}.qa-item h2{font-size:18px}.qa-item p{margin:10px 0 0;color:var(--muted)}.callout{padding:20px;border-radius:var(--radius);background:var(--soft2);border:1px solid var(--line)}.callout strong{color:var(--ink)}.callout p{margin:6px 0 0}.overlay{position:fixed;z-index:60;inset:0;background:rgba(10,22,40,.38);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.catalog-panel,.search-layer{position:fixed;z-index:70;left:0;right:0;top:90px;visibility:hidden;opacity:0;pointer-events:none;transform:translateY(-10px);transition:.2s}.catalog-panel.is-open,.search-layer.is-open{visibility:visible;opacity:1;pointer-events:auto;transform:none}.catalog-shell,.search-card{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:0 0 16px 16px;max-height:calc(100vh - 110px);overflow:auto}.catalog-head,.search-head{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;border-bottom:1px solid var(--line)}.catalog-brand{display:flex;align-items:center;gap:12px;color:var(--ink)}.close-button{border:1px solid var(--line);background:#fff;color:var(--brand);padding:0 14px;cursor:pointer}.catalog-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:22px}.catalog-grid h2{font-size:15px;color:var(--brand);margin-bottom:9px}.catalog-grid a{display:block;padding:10px 0;border-top:1px solid var(--line)}.catalog-grid a strong{display:block;color:var(--ink);font-size:14px}.catalog-grid a span{display:block;color:var(--aux);font-size:12px;line-height:1.55;margin-top:3px}.search-card{padding-bottom:24px}.search-card>label,.search-card>input,.search-card>.search-presets,.search-card>.search-note{margin-left:20px;margin-right:20px}.search-card>label{display:block;margin-top:22px;color:var(--ink);font-weight:800}.search-card>input{display:block;width:calc(100% - 40px);min-height:48px;margin-top:8px;border:1px solid var(--line);border-radius:10px;padding:0 14px;color:var(--text);font-size:16px}.search-presets{display:flex;flex-wrap:wrap;gap:9px;margin-top:14px}.search-presets a{display:inline-flex;align-items:center;min-height:40px;border:1px solid var(--line);border-radius:9px;padding:0 14px;color:var(--brand);font-weight:700}.search-note{color:var(--aux);font-size:13px}.site-footer{background:var(--ink);color:#a0aec0;margin-top:46px;padding:42px 0 calc(36px + env(safe-area-inset-bottom))}.footer-top{display:grid;gap:28px}.footer-brand{display:flex;align-items:center;gap:14px}.footer-brand div{display:flex;gap:10px;align-items:baseline}.footer-brand strong{color:#fff;font-size:24px}.footer-brand span{color:#cbd5e0;font-size:13px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12)}.footer-grid h2{color:#fff;font-size:14px;margin-bottom:10px}.footer-grid a{display:block;padding:3px 0;color:#a0aec0;font-size:14px}.footer-grid a:hover{color:#fff}.footer-notice,.copyright{margin:0;font-size:13px}.copyright{color:#718096}.mobile-bottom{display:none}
@media(max-width:900px){.tag-grid,.three-grid,.theme-grid{grid-template-columns:repeat(2,1fr)}.catalog-grid{grid-template-columns:repeat(2,1fr)}.split,.app-layout{grid-template-columns:1fr}.app-layout .media-slot{max-width:520px}.shelf-row{grid-template-columns:90px 1fr}.shelf-row>a{grid-column:2}.policy-grid{grid-template-columns:1fr}}
@media(max-width:680px){:root{--top-h:90px}.shell{width:min(100% - 32px,1220px)}.tab-strip{display:none}.masthead-inner{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:8px}.brand-mark img{height:30px;max-width:92px}.catalog-button{padding:0 15px}.app-link{padding:0 12px;font-size:13px}.page-main{padding-top:calc(var(--top-h) + 20px);padding-bottom:64px}.page-hero,.section-block{padding:28px 0}.media-slot.banner{max-height:260px}.media-slot.content{height:190px}.section-head{align-items:start}.tag-grid,.three-grid,.theme-grid,.directory-list,.index-grid{grid-template-columns:1fr}.number-row{grid-template-columns:50px 105px 1fr;gap:10px}.shelf-row{grid-template-columns:1fr;gap:6px}.shelf-row>a{grid-column:auto}.long-strip{grid-template-columns:1fr;gap:8px}.catalog-panel{top:90px;bottom:0}.catalog-shell{width:100%;height:100%;max-height:none;border-radius:0}.catalog-grid{grid-template-columns:1fr;gap:12px}.search-layer{top:0;bottom:0;background:var(--soft);transform:none}.search-card{width:100%;height:100%;max-height:none;border:0;border-radius:0;background:var(--soft);padding-top:max(12px,env(safe-area-inset-top));overflow:auto}.mobile-bottom{position:fixed;z-index:55;left:0;right:0;bottom:0;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);background:#fff;border-top:1px solid var(--line)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:50px;color:var(--muted);font-size:13px;font-weight:800}.mobile-bottom a.active{background:var(--brand);color:#fff}.site-footer{padding-bottom:calc(88px + env(safe-area-inset-bottom))}}
@media(max-width:430px){.shell{width:calc(100% - 32px)}.brand-mark{min-width:0}.brand-mark img{max-width:78px}.app-link{padding:0 9px}.catalog-button{padding:0 12px}.number-row{grid-template-columns:44px 1fr}.number-row>div:last-child{grid-column:2}.footer-grid{grid-template-columns:repeat(2,1fr)}}