:root{
  --bg:#F3F6F9;--surface:#FFFFFF;--surface2:#E8EEF5;--title:#0B1220;--text:#1E293B;--muted:#475569;--soft:#64748B;
  --blue:#2563EB;--blue2:#60A5FA;--blue3:#1D4ED8;--lime:#65A30D;--slate:#334155;--border:rgba(37,99,235,.16);--shadow:0 14px 36px rgba(11,18,32,.08);
  --max:1180px;--top:136px
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.75 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;overflow-x:hidden}body.layer-open{overflow:hidden}
a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.shell{width:min(var(--max),calc(100% - 32px));margin-inline:auto}.site-header{position:fixed;z-index:80;inset:0 0 auto}.status-bar{height:32px;background:var(--slate);color:#fff}.status-inner,.command-inner{height:100%;display:flex;align-items:center;justify-content:space-between}.status-brand{font-size:13px;font-weight:750;letter-spacing:.05em}.icon-text-button{min-height:32px;border:0;background:transparent;color:#fff;padding:0 6px}.command-bar{height:60px;background:#fff;border-bottom:1px solid var(--border)}.command-inner{display:grid;grid-template-columns:1fr auto 1fr;gap:12px}.square-button,.close-button{min-width:44px;min-height:44px;border:1px solid var(--border);background:#fff;color:var(--title);border-radius:12px;font-weight:700}.square-button{justify-self:start}.brand-lockup{justify-self:center;display:flex;align-items:center;min-height:44px}.brand-mark{display:block;max-height:32px;max-width:168px;width:auto}.brand-fallback{font-size:22px;font-weight:900;letter-spacing:-.03em;color:var(--title)}.app-button{justify-self:end;min-height:44px;display:inline-flex;align-items:center;padding:0 18px;border-radius:999px;background:linear-gradient(135deg,#60A5FA 0%,#2563EB 52%,#1D4ED8 100%);color:#fff;font-weight:800}.tab-bar{height:44px;background:#fff;border-bottom:1px solid var(--border)}.tab-inner{height:100%;display:grid;grid-template-columns:repeat(6,1fr)}.tab-link{position:relative;display:flex;align-items:center;justify-content:center;color:var(--muted);font-weight:700}.tab-link.is-current{color:var(--blue)}.tab-link.is-current:after{content:"";position:absolute;left:26%;right:26%;bottom:0;height:3px;border-radius:3px 3px 0 0;background:var(--blue)}.site-main{padding-top:calc(var(--top) + 28px);min-height:70vh}.page-hero{padding:32px 0 18px}.eyebrow{margin:0 0 8px;color:var(--blue);font-weight:900;letter-spacing:.08em}.page-hero h1,.cover-copy h1{margin:0;color:var(--title);font-size:clamp(28px,4vw,32px);line-height:1.18;letter-spacing:-.03em}.lead{max-width:820px;margin:16px 0 0;color:var(--muted);font-size:17px}.cover-card{display:grid;gap:26px;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);border-radius:20px;padding:clamp(22px,4vw,42px);margin-bottom:34px}.cover-copy p{max-width:830px;color:var(--muted)}.button-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}.primary-button,.secondary-button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:999px;font-weight:850}.primary-button{background:linear-gradient(135deg,#60A5FA 0%,#2563EB 52%,#1D4ED8 100%);color:#fff}.secondary-button{background:#fff;color:var(--blue);border:1px solid var(--border)}.cover-media,.wide-media{width:100%;overflow:hidden;border-radius:18px;background:var(--surface2)}.cover-media{max-height:340px}.cover-media img,.wide-media img,.card-media img,.stack-media img,.app-media img{width:100%;height:auto;display:block}.media-placeholder{width:100%;min-height:220px;border-radius:18px;background:linear-gradient(135deg,#E8EEF5,#F8FAFC);border:1px dashed rgba(37,99,235,.22)}.cover-media .media-placeholder{min-height:260px}.section-block{padding:30px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:18px}.section-head h2,.content-card h2,.article-panel h2{margin:0;color:var(--title);font-size:24px;line-height:1.3}.section-head p{margin:0;color:var(--soft)}.topic-strips{display:grid;gap:0;background:#fff;border:1px solid var(--border);border-radius:18px;overflow:hidden}.topic-strip{display:grid;grid-template-columns:18px minmax(120px,180px) 1fr auto;gap:12px;align-items:center;padding:16px 18px;border-bottom:1px solid var(--border)}.topic-strip:last-child{border-bottom:0}.topic-dot{width:8px;height:8px;background:var(--blue);border-radius:50%}.topic-strip strong{color:var(--title)}.topic-strip span{color:var(--muted)}.topic-strip a{color:var(--blue);font-weight:800}.pulse-layout{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:24px;align-items:start}.number-stack{display:grid;gap:14px}.number-note{background:#fff;border:1px solid var(--border);border-radius:18px;padding:20px}.number-note .num,.metric-number{display:block;color:var(--blue);font-size:38px;font-weight:950;line-height:1}.number-note h3{margin:12px 0 8px;color:var(--title)}.number-note p{margin:0;color:var(--muted)}.three-grid,.four-grid,.cards-grid{display:grid;gap:18px}.three-grid{grid-template-columns:repeat(3,1fr)}.four-grid{grid-template-columns:repeat(4,1fr)}.cards-grid{grid-template-columns:repeat(2,1fr)}.content-card,.article-panel,.service-card{background:#fff;border:1px solid var(--border);border-radius:18px;padding:20px;box-shadow:var(--shadow)}.content-card p,.article-panel p,.service-card p{color:var(--muted)}.content-card h3,.article-panel h3{margin:14px 0 8px;color:var(--title)}.card-media{margin:-20px -20px 18px;width:calc(100% + 40px);overflow:hidden;border-radius:18px 18px 0 0;background:var(--surface2)}.card-media .media-placeholder{border-radius:18px 18px 0 0;min-height:180px}.stack-list{display:grid;gap:18px}.stack-item{display:grid;grid-template-columns:minmax(220px,.8fr) 1.2fr;gap:20px;align-items:center;background:#fff;border:1px solid var(--border);border-radius:18px;padding:20px}.stack-item h2,.stack-item h3{margin-top:0;color:var(--title)}.stack-item p{color:var(--muted)}.stack-media .media-placeholder{min-height:200px}.file-list{background:#fff;border:1px solid var(--border);border-radius:18px;overflow:hidden}.file-row{display:grid;grid-template-columns:minmax(130px,.55fr) 1.45fr auto;gap:18px;align-items:center;padding:18px 20px;border-bottom:1px solid var(--border)}.file-row:last-child{border-bottom:0}.file-row strong{color:var(--title)}.file-row span{color:var(--muted)}.file-row a{color:var(--blue);font-weight:800}.metric-list{display:grid;gap:12px}.metric-item{display:grid;grid-template-columns:90px 1fr;gap:18px;align-items:start;background:#fff;border:1px solid var(--border);border-radius:18px;padding:20px}.metric-item h3{margin:2px 0 6px;color:var(--title)}.metric-item p{margin:0;color:var(--muted)}.timeline{position:relative;display:grid;gap:16px;margin-left:12px;padding-left:28px}.timeline:before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:2px;background:var(--border)}.timeline-item{position:relative;background:#fff;border:1px solid var(--border);border-radius:18px;padding:18px}.timeline-item:before{content:"";position:absolute;left:-30px;top:24px;width:12px;height:12px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 5px var(--bg)}.status-tag{display:inline-flex;min-height:30px;align-items:center;padding:0 10px;border-radius:999px;background:#E8EEF5;color:var(--blue3);font-size:13px;font-weight:800}.prose{display:grid;gap:18px}.prose article{background:#fff;border:1px solid var(--border);border-radius:18px;padding:22px}.prose h2,.prose h3{color:var(--title);margin-top:0}.prose p,.prose li{color:var(--muted)}.prose ul{padding-left:1.2em}.index-list{display:grid;gap:12px}.index-row{display:grid;grid-template-columns:60px minmax(150px,.7fr) 1.3fr auto;gap:14px;align-items:center;background:#fff;border:1px solid var(--border);border-radius:16px;padding:16px 18px}.index-row .index-no{color:var(--blue);font-weight:950;font-size:22px}.index-row p{margin:0;color:var(--muted)}.index-row a{color:var(--blue);font-weight:800}.app-showcase{display:grid;grid-template-columns:minmax(240px,.8fr) 1.2fr;gap:24px;align-items:center}.app-media{background:#fff;border:1px solid var(--border);border-radius:20px;padding:18px}.badge-inline{max-width:72px;margin:10px 0}.badge-inline img{max-width:72px;height:auto}.faq-list{display:grid;gap:14px}.faq-item{background:#fff;border:1px solid var(--border);border-radius:18px;padding:20px}.faq-item h2{font-size:19px;margin:0 0 8px;color:var(--title)}.faq-item p{margin:0;color:var(--muted)}.note-box{background:var(--surface2);border-left:4px solid var(--blue);padding:16px 18px;border-radius:0 14px 14px 0;color:var(--text)}.site-footer{margin-top:48px;background:#0B1220;color:#D6E4FF;padding:42px 0 calc(26px + env(safe-area-inset-bottom))}.footer-brand-row{display:grid;grid-template-columns:.7fr 1.3fr;gap:30px;align-items:start}.footer-brand{display:flex;gap:12px;align-items:center}.footer-brand span{display:grid}.footer-brand small{color:#9FB7DC}.footer-mark{max-height:32px;max-width:140px;width:auto}.footer-brand-row p{margin:0;color:#B6C7E1}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:30px}.footer-grid h2{font-size:15px;color:#fff}.footer-grid a{display:block;color:#C8D6EC;margin:7px 0}.footer-bottom{margin-top:28px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);color:#9FB1CB;font-size:14px}.page-overlay{position:fixed;z-index:90;inset:0;background:rgba(11,18,32,.45);opacity:0;visibility:hidden;pointer-events:none;transition:.22s}.page-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.mosaic-menu{position:fixed;z-index:100;inset:0;background:#F3F6F9;transform:translateY(-102%);visibility:hidden;pointer-events:none;transition:transform .3s ease,visibility .3s}.mosaic-menu.is-open{transform:translateY(0);visibility:visible;pointer-events:auto;overflow:auto}.mosaic-head{height:78px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;background:#F3F6F9;z-index:2}.mosaic-brand{display:flex;align-items:center;gap:12px;font-weight:950;font-size:21px;color:var(--title)}.mosaic-brand img{max-height:32px;max-width:150px}.mosaic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;padding-bottom:40px}.mosaic-group{background:#fff;border:1px solid var(--border);border-radius:18px;padding:18px}.mosaic-group h2{margin:0 0 12px;font-size:15px;color:var(--blue)}.mosaic-item{display:block;padding:13px 0;border-top:1px solid var(--border)}.mosaic-item strong{display:block;color:var(--title)}.mosaic-item span{display:block;margin-top:3px;color:var(--soft);font-size:14px;line-height:1.55}.search-layer{position:fixed;z-index:110;left:50%;top:102px;width:min(760px,calc(100% - 32px));transform:translate(-50%,-14px);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.search-layer.is-open{transform:translate(-50%,0);opacity:1;visibility:visible;pointer-events:auto}.search-card{background:#F8FAFC;border:1px solid var(--border);border-radius:20px;padding:20px;box-shadow:var(--shadow)}.search-top{display:flex;align-items:center;justify-content:space-between;color:var(--title)}.search-card label{display:block;margin:18px 0 8px;color:var(--muted)}.search-card input{width:100%;min-height:50px;border:1px solid var(--border);border-radius:14px;background:#fff;padding:0 16px;color:var(--title);outline:none}.search-card input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,235,.12)}.search-presets{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.search-presets a{min-height:42px;display:inline-flex;align-items:center;padding:0 14px;background:#fff;border:1px solid var(--border);border-radius:999px;color:var(--blue);font-weight:800}.search-note{margin:14px 0 0;color:var(--soft);font-size:13px}.mobile-nav{display:none}.primary-button:hover,.secondary-button:hover,.app-button:hover,.tab-link:hover,.topic-strip a:hover,.file-row a:hover,.index-row a:hover{filter:brightness(.96)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(37,99,235,.35);outline-offset:2px}
@media (max-width:900px){.three-grid{grid-template-columns:1fr}.four-grid{grid-template-columns:repeat(2,1fr)}.pulse-layout,.app-showcase{grid-template-columns:1fr}.stack-item{grid-template-columns:1fr}.cards-grid{grid-template-columns:1fr}.footer-brand-row{grid-template-columns:1fr}.mosaic-grid{grid-template-columns:repeat(2,1fr)}.index-row{grid-template-columns:50px 1fr auto}.index-row p{grid-column:2/4}.file-row{grid-template-columns:1fr auto}.file-row span{grid-column:1/3}}
@media (max-width:720px){:root{--top:92px}.tab-bar{display:none}.site-main{padding-top:calc(var(--top) + 24px);padding-bottom:64px}.command-inner{grid-template-columns:72px minmax(0,1fr) 98px}.app-button{padding:0 14px;white-space:nowrap}.brand-mark{max-width:112px}.cover-card{padding:20px}.topic-strip{grid-template-columns:16px 1fr auto}.topic-strip span{grid-column:2/4}.four-grid{grid-template-columns:1fr}.metric-item{grid-template-columns:68px 1fr}.metric-number{font-size:32px}.footer-grid{grid-template-columns:repeat(2,1fr)}.mosaic-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.mosaic-group{padding:14px}.mosaic-item span{font-size:13px}.search-layer{inset:0;width:auto;transform:none;background:#F3F6F9}.search-layer.is-open{transform:none}.search-card{min-height:100%;border:0;border-radius:0;box-shadow:none;padding:20px 16px 90px}.mobile-nav{position:fixed;z-index:70;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(--border)}.mobile-nav a{display:flex;align-items:center;justify-content:center;min-height:50px;color:var(--soft);font-size:13px;font-weight:800}.mobile-nav a.is-current{color:var(--blue)}.site-footer{padding-bottom:calc(78px + env(safe-area-inset-bottom))}}
@media (max-width:480px){.shell{width:min(var(--max),calc(100% - 32px))}.status-brand{font-size:12px}.command-inner{grid-template-columns:64px minmax(0,1fr) 92px}.square-button{min-width:52px;font-size:14px}.app-button{font-size:14px;padding:0 12px}.brand-fallback{font-size:19px}.page-hero{padding-top:24px}.topic-strip{padding:15px}.file-row{padding:16px}.mosaic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mosaic-group h2{font-size:14px}.mosaic-item strong{font-size:14px}.mosaic-item span{font-size:12px}.footer-grid{grid-template-columns:1fr 1fr;gap:18px}}