:root{--bg:#F3F6F9;--surface:#FFFFFF;--surface-2:#E8EEF5;--ink:#0B1220;--text:#1E293B;--muted:#475569;--soft:#64748B;--blue:#2563EB;--blue-light:#60A5FA;--blue-deep:#1D4ED8;--lime:#65A30D;--slate:#334155;--border:rgba(37,99,235,.16);--shadow:0 14px 36px rgba(11,18,32,.08);--radius:18px;--max:1180px}*{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;line-height:1.75;overflow-x:hidden}body.layer-open{overflow:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}button,input{font:inherit}.shell{width:min(var(--max),calc(100% - 32px));margin:0 auto}.site-header{position:fixed;inset:0 0 auto 0;z-index:60}.status-bar{height:32px;background:var(--slate);color:#fff}.status-inner{height:32px;display:flex;align-items:center;justify-content:space-between}.status-brand{font-size:13px;font-weight:700;letter-spacing:.06em}.icon-button,.close-button{border:0;background:transparent;cursor:pointer}.icon-button{color:#fff;min-height:32px;padding:0 4px;font-size:13px}.command-bar{height:60px;background:#fff;border-bottom:1px solid var(--border)}.command-inner{height:60px;display:grid;grid-template-columns:112px 1fr 112px;align-items:center}.square-button{width:44px;height:44px;border:1px solid var(--border);background:#fff;border-radius:14px;display:flex;flex-direction:column;justify-content:center;gap:5px;padding:0 12px;cursor:pointer}.square-button span{display:block;height:2px;background:var(--ink);border-radius:2px}.command-logo{justify-self:center;min-height:44px;display:flex;align-items:center}.command-logo img{height:32px;width:auto;max-width:180px}.command-logo strong{font-size:22px;letter-spacing:.03em}.app-open{justify-self:end;display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:999px;background:linear-gradient(135deg,#60A5FA 0%,#2563EB 52%,#1D4ED8 100%);color:#fff;font-weight:700}.desktop-tabs{height:44px;background:#fff;border-bottom:1px solid var(--border)}.tabs-inner{height:44px;display:grid;grid-template-columns:repeat(6,1fr)}.tabs-inner a{height:44px;display:flex;align-items:center;justify-content:center;position:relative;color:var(--muted);font-size:14px}.tabs-inner a.is-current{color:var(--blue);font-weight:700}.tabs-inner a.is-current:after{content:"";position:absolute;left:28%;right:28%;bottom:0;height:3px;border-radius:3px 3px 0 0;background:var(--blue)}.site-main{padding-top:136px;min-height:60vh}.page-shell{padding:42px 0 76px}.eyebrow{margin:0 0 8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}.page-title,.hero-title{margin:0;color:var(--ink);font-size:clamp(28px,4vw,32px);line-height:1.22;letter-spacing:-.02em}.lead{max-width:820px;margin:14px 0 0;font-size:17px;color:var(--muted)}.hero-card,.section-card,.article-card,.feature-card,.list-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.hero-card{padding:clamp(22px,4vw,40px);margin-top:20px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 20px;border-radius:999px;font-weight:700}.btn-primary{color:#fff;background:linear-gradient(135deg,#60A5FA 0%,#2563EB 52%,#1D4ED8 100%)}.btn-secondary{background:#fff;color:var(--blue);border:1px solid rgba(37,99,235,.35)}.image-slot{margin-top:28px;border-radius:16px;overflow:hidden;background:linear-gradient(135deg,#E8EEF5,#F7FAFD);min-height:180px;display:flex;align-items:center;justify-content:center}.image-slot img{width:100%;max-height:340px;object-fit:contain}.section-block{margin-top:42px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:18px}.section-head h2{margin:0;color:var(--ink);font-size:24px;line-height:1.3}.section-head p{margin:0;color:var(--soft);font-size:14px}.topic-strips{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.topic-strip{background:#fff;border:1px solid var(--border);border-radius:16px;padding:18px 20px;display:grid;grid-template-columns:16px 1fr auto;gap:12px;align-items:start}.topic-dot{width:9px;height:9px;background:var(--blue);border-radius:50%;margin-top:8px}.topic-strip strong{color:var(--ink);display:block;margin-bottom:4px}.topic-strip p{margin:0;color:var(--muted);font-size:14px}.topic-strip a{color:var(--blue);font-weight:700;white-space:nowrap}.pulse-card{background:#fff;border:1px solid var(--border);border-radius:20px;overflow:hidden}.pulse-visual img{width:100%;max-height:300px;object-fit:cover}.pulse-list{display:grid;grid-template-columns:repeat(4,1fr)}.pulse-item{padding:24px;border-right:1px solid var(--border)}.pulse-item:last-child{border-right:0}.big-num{display:block;color:var(--blue);font-size:32px;font-weight:900;letter-spacing:-.04em}.pulse-item h3{margin:8px 0 6px;color:var(--ink);font-size:18px}.pulse-item p{margin:0;color:var(--muted);font-size:14px}.three-grid,.four-grid,.card-grid{display:grid;gap:18px}.three-grid{grid-template-columns:repeat(3,1fr)}.four-grid{grid-template-columns:repeat(4,1fr)}.card-grid{grid-template-columns:repeat(2,1fr)}.feature-card{overflow:hidden}.feature-card .media{background:var(--surface-2);min-height:150px}.feature-card .media img{width:100%;height:190px;object-fit:cover}.feature-copy{padding:22px}.feature-copy h3{margin:0 0 8px;color:var(--ink);font-size:19px}.feature-copy p{margin:0;color:var(--muted);font-size:14px}.feature-copy a{display:inline-flex;margin-top:14px;color:var(--blue);font-weight:700}.stack-feature{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:18px;align-items:stretch}.stack-feature+.stack-feature{margin-top:18px}.stack-media,.stack-copy{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.stack-media{overflow:hidden;min-height:220px;background:var(--surface-2)}.stack-media img{width:100%;height:100%;max-height:300px;object-fit:cover}.stack-copy{padding:28px}.stack-copy h3{margin:0 0 10px;color:var(--ink);font-size:22px}.stack-copy p{margin:0 0 12px;color:var(--muted)}.file-list{background:#fff;border:1px solid var(--border);border-radius:18px;overflow:hidden}.file-row{display:grid;grid-template-columns:64px 1fr auto;gap:16px;align-items:center;padding:18px 20px;border-bottom:1px solid var(--border)}.file-row:last-child{border-bottom:0}.file-icon{width:44px;height:44px;border-radius:14px;background:var(--surface-2);display:flex;align-items:center;justify-content:center;color:var(--blue);font-weight:900}.file-row strong{color:var(--ink);display:block}.file-row p{margin:3px 0 0;color:var(--muted);font-size:14px}.file-row a{color:var(--blue);font-weight:700}.meter-list{display:grid;gap:12px}.meter-row{display:grid;grid-template-columns:86px 1fr auto;gap:18px;align-items:center;background:#fff;border:1px solid var(--border);border-radius:16px;padding:18px 20px}.meter-row .big-num{font-size:38px}.meter-row h3{margin:0;color:var(--ink)}.meter-row p{margin:4px 0 0;color:var(--muted);font-size:14px}.timeline{position:relative;margin-left:14px;padding-left:30px}.timeline:before{content:"";position:absolute;left:7px;top:10px;bottom:10px;width:2px;background:rgba(37,99,235,.25)}.timeline-item{position:relative;background:#fff;border:1px solid var(--border);border-radius:16px;padding:20px 22px;margin-bottom:14px}.timeline-item:before{content:"";position:absolute;left:-31px;top:25px;width:14px;height:14px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 5px var(--bg)}.status-chip{display:inline-flex;min-height:30px;align-items:center;padding:0 11px;border-radius:999px;background:var(--surface-2);color:var(--blue-deep);font-size:12px;font-weight:800}.prose{background:#fff;border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow);padding:clamp(22px,4vw,38px)}.prose h2{margin:30px 0 10px;color:var(--ink);font-size:22px}.prose h2:first-child{margin-top:0}.prose h3{color:var(--ink);margin:24px 0 8px}.prose p{margin:0 0 16px;color:var(--text)}.prose ul{margin:8px 0 18px;padding-left:1.3em}.prose li{margin:6px 0}.editor-note{border-left:4px solid var(--blue);background:var(--surface-2);padding:16px 18px;border-radius:0 14px 14px 0;color:var(--muted)}.index-links{display:flex;gap:10px;flex-wrap:wrap}.index-links a{min-height:40px;display:inline-flex;align-items:center;padding:0 14px;border-radius:999px;background:#fff;border:1px solid var(--border);color:var(--blue);font-weight:700}.faq-list{display:grid;gap:14px}.faq-item{background:#fff;border:1px solid var(--border);border-radius:16px;padding:22px}.faq-item h2{margin:0 0 8px;color:var(--ink);font-size:18px}.faq-item p{margin:0;color:var(--muted)}.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.service-card{background:#fff;border:1px solid var(--border);border-radius:18px;padding:22px}.service-card h3{margin:0 0 8px;color:var(--ink)}.service-card p{margin:0;color:var(--muted);font-size:14px}.site-footer{background:#0B1220;color:#D6E4FF;padding:42px 0 calc(24px + env(safe-area-inset-bottom))}.footer-brand-row{display:grid;grid-template-columns:240px 1fr;gap:28px;align-items:center;padding-bottom:28px;border-bottom:1px solid rgba(214,228,255,.14)}.footer-brand{display:flex;gap:12px;align-items:center}.footer-brand img{height:30px;width:auto;max-width:150px;filter:brightness(0) invert(1)}.footer-brand span{display:flex;flex-direction:column}.footer-brand small{opacity:.7}.footer-brand-row p{margin:0;color:#BFD0EE}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:30px 0}.footer-grid h2{font-size:14px;color:#fff;margin:0 0 10px}.footer-grid a{display:block;color:#BFD0EE;margin:7px 0;font-size:14px}.footer-bottom{border-top:1px solid rgba(214,228,255,.14);padding-top:18px;display:flex;justify-content:space-between;gap:16px;color:#9FB4D5;font-size:13px}.page-overlay{position:fixed;inset:0;background:rgba(11,18,32,.38);z-index:70;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.page-overlay.is-active{opacity:1;visibility:visible;pointer-events:auto}.mosaic-menu{position:fixed;inset:0;z-index:90;background:#F3F6F9;overflow:auto;transform:translateY(-18px);opacity:0;visibility:hidden;pointer-events:none;transition:.22s}.mosaic-menu.is-open{transform:none;opacity:1;visibility:visible;pointer-events:auto}.mosaic-head{min-height:84px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;background:#F3F6F9;border-bottom:1px solid var(--border);z-index:2}.mosaic-brand{display:flex;align-items:center;gap:12px}.mosaic-brand img{height:30px;width:auto;max-width:160px}.close-button{min-height:44px;padding:0 16px;border-radius:999px;border:1px solid var(--border);background:#fff;color:var(--blue);font-weight:700}.mosaic-groups{padding:24px 0 48px}.mosaic-groups section{margin-bottom:30px}.mosaic-groups h2{font-size:16px;color:var(--ink);margin:0 0 12px}.mosaic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.mosaic-grid a{background:#fff;border:1px solid var(--border);border-radius:16px;padding:18px;min-height:112px}.mosaic-grid strong{display:block;color:var(--ink);margin-bottom:6px}.mosaic-grid span{color:var(--muted);font-size:13px;line-height:1.6}.search-layer{position:fixed;left:0;right:0;top:92px;z-index:85;visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-10px);transition:.2s}.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:none}.search-card{width:min(760px,calc(100% - 32px));margin:0 auto;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);border-radius:20px;padding:20px}.search-head{display:flex;align-items:center;justify-content:space-between;gap:16px}.search-field{display:block;margin-top:18px}.search-field input{width:100%;height:50px;border:1px solid rgba(37,99,235,.26);border-radius:14px;padding:0 16px;background:#F8FAFC;color:var(--muted)}.search-note{margin:10px 0;color:var(--soft);font-size:13px}.search-presets{display:flex;gap:8px;flex-wrap:wrap}.search-presets a{min-height:40px;display:inline-flex;align-items:center;padding:0 14px;border-radius:999px;background:var(--surface-2);color:var(--blue);font-weight:700;font-size:14px}.mobile-bottom{display:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}a:hover{color:var(--blue-deep)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(37,99,235,.28);outline-offset:3px}
@media(max-width:900px){.pulse-list{grid-template-columns:repeat(2,1fr)}.pulse-item:nth-child(2){border-right:0}.pulse-item:nth-child(-n+2){border-bottom:1px solid var(--border)}.three-grid{grid-template-columns:1fr}.four-grid{grid-template-columns:repeat(2,1fr)}.service-grid{grid-template-columns:1fr 1fr}.stack-feature{grid-template-columns:1fr}.footer-brand-row{grid-template-columns:1fr}.mosaic-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){.shell{width:min(100% - 32px,var(--max))}.desktop-tabs{display:none}.site-main{padding-top:92px;padding-bottom:60px}.command-inner{grid-template-columns:64px 1fr 94px}.app-open{padding:0 12px;font-size:14px}.command-logo img{max-width:132px}.topic-strips,.card-grid,.service-grid{grid-template-columns:1fr}.four-grid{grid-template-columns:1fr}.pulse-list{grid-template-columns:1fr}.pulse-item,.pulse-item:nth-child(2){border-right:0}.pulse-item:nth-child(-n+3){border-bottom:1px solid var(--border)}.file-row{grid-template-columns:52px 1fr}.file-row>a{grid-column:2}.meter-row{grid-template-columns:66px 1fr}.meter-row>a{grid-column:2}.footer-grid{grid-template-columns:repeat(2,1fr)}.footer-bottom{flex-direction:column}.mosaic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mosaic-grid a{padding:15px;min-height:118px}.search-layer{inset:0;top:0;background:#F3F6F9;overflow:auto}.search-layer.is-open{display:block}.search-card{width:100%;min-height:100vh;margin:0;border:0;border-radius:0;box-shadow:none;background:#F3F6F9;padding:22px 16px}.search-card .search-field input{background:#fff}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:55;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(--border)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--muted);min-height:50px}.mobile-bottom a.is-current{color:var(--blue);font-weight:800}.site-footer{padding-bottom:calc(74px + env(safe-area-inset-bottom))}.page-shell{padding-top:30px}.hero-card{padding:22px}.section-head{align-items:start;flex-direction:column}.topic-strip{grid-template-columns:14px 1fr}.topic-strip>a{grid-column:2}.mosaic-menu{z-index:90}}
@media(max-width:440px){.mosaic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mosaic-grid a{min-height:128px}.footer-grid{grid-template-columns:1fr 1fr}.file-row{padding:16px}.page-title,.hero-title{font-size:28px}}