:root{
    --bg:#F3F7FB;--bg-deep:#E6EFF7;--surface:#FFFFFF;--surface-2:#DCEBF5;--ink:#10263A;--text:#263B4C;--muted:#60788C;--soft:#8094A5;
    --brand:#3B9FE0;--brand-light:#67B9EC;--steel:#1E6FB8;--ice:#B8DDF3;--mint:#39A69C;--border:rgba(30,111,184,.16);--border-strong:rgba(59,159,224,.38);
    --shadow:0 14px 36px rgba(16,38,58,.08);--radius:14px;--max:1240px;--top:72px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
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:17px;line-height:1.78;overflow-wrap:anywhere}
body.modal-open{overflow:hidden}
a{color:var(--steel);text-decoration:none}a:hover{text-decoration:underline}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid rgba(59,159,224,.38);outline-offset:3px}
img{display:block;max-width:100%;height:auto}
button,input{font:inherit}
button{cursor:pointer}
.topbar{position:sticky;top:0;z-index:70;height:var(--top);background:rgba(243,247,251,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);box-shadow:0 6px 18px rgba(16,38,58,.04)}
.topbar-inner{max-width:var(--max);height:100%;margin:0 auto;padding:0 22px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:14px;min-width:0;color:var(--ink);font-weight:800}.brand:hover{text-decoration:none}.brand img,.footer-logo img,.sheet-brand img{height:34px;width:auto}.brand-word{font-size:22px;white-space:nowrap}.brand-state{font-size:14px;color:var(--muted);font-weight:600;white-space:nowrap}
.top-actions{display:flex;align-items:center;gap:10px}.icon-button,.app-link,.rail-more,.close-button{min-height:44px;border-radius:10px;border:1px solid var(--border-strong);background:#fff;color:var(--steel);padding:9px 15px;font-weight:800}.icon-button:hover,.rail-more:hover,.close-button:hover{background:var(--surface-2);text-decoration:none}.app-link{display:inline-flex;align-items:center;background:linear-gradient(135deg,var(--brand-light) 0%,var(--brand) 52%,var(--steel) 100%);color:#fff;border-color:transparent}.app-link:hover{filter:brightness(.97);text-decoration:none}
.page-shell{max-width:var(--max);margin:0 auto;padding:34px 22px 72px;display:grid;grid-template-columns:220px minmax(0,1fr);gap:34px;align-items:start}.main-column{min-width:0}.category-rail{position:sticky;top:calc(var(--top) + 24px);display:flex;flex-direction:column;gap:18px}.rail-group{background:rgba(255,255,255,.82);border:1px solid var(--border);border-radius:14px;padding:16px;box-shadow:0 10px 26px rgba(16,38,58,.05)}.rail-group h2{font-size:15px;margin:0 0 4px;color:var(--ink)}.rail-group p{font-size:13px;line-height:1.55;margin:0 0 10px;color:var(--muted)}.rail-group nav{display:grid;gap:4px}.rail-group a{display:block;min-height:40px;padding:7px 10px;border-left:3px solid transparent;color:var(--text);border-radius:8px;font-size:15px;font-weight:700}.rail-group a:hover{background:var(--bg-deep);text-decoration:none}.rail-group a.is-current{background:#E7F4FD;border-left-color:var(--steel);color:var(--ink);font-weight:900}.rail-more{width:100%}
.content-page{display:grid;gap:28px}.breadcrumb{display:flex;flex-wrap:wrap;gap:7px;font-size:14px;color:var(--muted)}.breadcrumb a{color:var(--muted)}.breadcrumb span::before{content:"/";margin-right:7px;color:#9DB0BF}.page-hero{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(280px,.92fr);gap:26px;align-items:center;background:linear-gradient(135deg,#fff 0%,#EDF6FC 100%);border:1px solid var(--border);border-radius:16px;padding:30px;box-shadow:var(--shadow)}.page-hero.no-media{grid-template-columns:1fr}.eyebrow{margin:0 0 6px;color:var(--steel);font-size:13px;letter-spacing:.08em;font-weight:900;text-transform:uppercase}.page-hero h1,.cover-copy h1{margin:0 0 14px;color:var(--ink);font-size:clamp(30px,4vw,38px);line-height:1.2;letter-spacing:-.02em}.lead{margin:0;color:var(--text);font-size:18px;line-height:1.85}.media-frame{width:100%;border:1px solid var(--border);border-radius:14px;background:linear-gradient(135deg,#F7FBFE,#DCEBF5);overflow:hidden;display:flex;align-items:center;justify-content:center;min-height:180px}.media-frame img{width:100%;height:auto;max-height:360px;object-fit:contain;object-position:center}.media-frame.banner img{max-height:420px}.media-frame.app-media{aspect-ratio:4/5;max-height:460px}.media-frame.app-media img{height:100%;width:100%;object-fit:contain}.media-fallback{width:100%;min-height:inherit;aspect-ratio:16/9;display:grid;place-items:center;padding:20px;color:var(--ink);font-weight:900;background:linear-gradient(135deg,#EFF8FD,#CFE7F6)}.app-media .media-fallback{aspect-ratio:4/5}.icon-media{width:76px;aspect-ratio:1}.icon-media .media-fallback{aspect-ratio:1;min-height:76px}.icon-media img{width:100%;height:100%;object-fit:contain}
.section-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:26px;box-shadow:0 12px 30px rgba(16,38,58,.05)}.section-card h2{margin:0 0 12px;font-size:clamp(22px,3vw,28px);line-height:1.3;color:var(--ink)}.section-card h3{margin:18px 0 8px;color:var(--ink);font-size:19px}.section-card p{margin:0 0 14px}.section-card p:last-child{margin-bottom:0}.section-card ul,.section-card ol{margin:10px 0 0;padding-left:1.4em}.section-card li+li{margin-top:7px}
.text-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.text-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.mini-card{border:1px solid var(--border);border-radius:14px;padding:20px;background:linear-gradient(180deg,#fff,#F6FAFD)}.mini-card h3{margin:0 0 8px;color:var(--ink);font-size:19px}.mini-card p{margin:0;font-size:16px;color:var(--text)}.number{font-size:13px;font-weight:900;color:var(--steel);letter-spacing:.08em}.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}.tag{display:inline-flex;align-items:center;min-height:32px;padding:4px 10px;border:1px solid var(--border);border-radius:8px;background:#F4F9FC;color:var(--muted);font-size:13px;font-weight:800}.button-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 17px;border-radius:10px;font-weight:900;border:1px solid transparent}.btn.primary{background:linear-gradient(135deg,var(--brand-light) 0%,var(--brand) 52%,var(--steel) 100%);color:#fff}.btn.secondary{background:#fff;border-color:var(--border-strong);color:var(--steel)}.btn:hover{text-decoration:none;filter:brightness(.98)}
.related{background:var(--bg-deep);border:1px solid var(--border);border-radius:16px;padding:24px}.related h2{margin:0 0 12px;color:var(--ink);font-size:23px}.related-links{display:flex;flex-wrap:wrap;gap:10px}.related-links a{display:inline-flex;min-height:44px;align-items:center;padding:8px 13px;border-radius:10px;background:#fff;border:1px solid var(--border);font-weight:800}.end-action{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px;border:1px solid var(--border);background:#fff;border-radius:16px}.end-action h2{margin:0 0 5px;color:var(--ink);font-size:22px}.end-action p{margin:0;color:var(--muted)}
.home-cover{display:grid;gap:20px}.cover-copy{background:#fff;border:1px solid var(--border);border-radius:16px;padding:28px;box-shadow:var(--shadow)}.cover-copy .lead{max-width:850px}.task-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.task-card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px;min-height:160px;display:flex;flex-direction:column;justify-content:space-between}.task-card.featured{grid-row:span 2}.task-card .media-frame{margin-bottom:14px;min-height:110px}.task-card h3{margin:0 0 7px;color:var(--ink);font-size:18px}.task-card p{margin:0 0 10px;font-size:15px;color:var(--muted)}.task-card a{font-weight:900}.task-index{font-size:28px;font-weight:900;color:var(--ice);line-height:1}
.editor-board{display:grid;grid-template-columns:1.25fr .75fr;gap:18px}.board-main,.board-side{background:#fff;border:1px solid var(--border);border-radius:16px;padding:22px}.board-main .media-frame{margin-bottom:18px}.board-side{display:grid;gap:14px;align-content:start}.board-side article{padding-bottom:14px;border-bottom:1px solid var(--border)}.board-side article:last-child{border-bottom:0;padding-bottom:0}.board-side h3,.board-main h2{color:var(--ink);margin:0 0 8px}.board-side p,.board-main p{margin:0;color:var(--text)}
.media-band{display:grid;grid-template-columns:minmax(260px,.9fr) minmax(0,1.1fr);gap:22px;align-items:center;background:#fff;border:1px solid var(--border);border-radius:16px;padding:20px}.media-band.reverse .media-frame{order:2}.media-band h2{margin:0 0 8px;color:var(--ink);font-size:24px}.media-band p{margin:0}.media-band .media-frame{min-height:190px}.media-band .media-frame img{max-height:260px}
.people-panel{display:grid;grid-template-columns:.9fr 1.1fr;gap:22px;background:#fff;border:1px solid var(--border);border-radius:16px;padding:22px}.node-list{display:grid;gap:12px}.node{border-left:3px solid var(--brand);padding:10px 0 10px 15px}.node strong{display:block;color:var(--ink);margin-bottom:3px}.node p{margin:0;font-size:15px}
.topic-mosaic{display:grid;grid-template-columns:repeat(12,1fr);gap:14px}.topic{border:1px solid var(--border);border-radius:14px;padding:20px;min-height:160px;background:#fff}.topic:nth-child(1),.topic:nth-child(4){grid-column:span 7}.topic:nth-child(2),.topic:nth-child(3){grid-column:span 5}.topic:nth-child(5){grid-column:span 4}.topic:nth-child(6){grid-column:span 8}.topic strong{font-size:20px;color:var(--ink);display:block;margin:8px 0}.topic p{margin:0;font-size:15px}.topic:nth-child(2n){background:#EAF5FB}.topic:nth-child(3n){background:#EDF8F5}
.organize-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:18px}.shelf-block,.chart-block{background:#fff;border:1px solid var(--border);border-radius:16px;padding:22px}.shelf-layers{display:grid;gap:10px;margin-top:12px}.shelf-layer{display:grid;grid-template-columns:120px 1fr;gap:12px;align-items:center;padding:12px 0;border-bottom:1px dashed var(--border)}.shelf-layer:last-child{border:0}.shelf-layer strong{color:var(--ink)}.chart-list{counter-reset:item;display:grid;gap:12px;margin-top:12px}.chart-list div{display:grid;grid-template-columns:46px 1fr;gap:10px;align-items:start}.chart-list div::before{counter-increment:item;content:counter(item,decimal-leading-zero);font-weight:900;color:var(--steel);font-size:18px}.chart-list strong{color:var(--ink);display:block}.chart-list p{margin:0;font-size:15px}
.lab-grid{display:grid;grid-template-columns:minmax(240px,.8fr) 1.2fr;gap:22px;background:#fff;border:1px solid var(--border);border-radius:16px;padding:22px}.switch-demo{display:grid;gap:12px}.demo-row{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:14px;border:1px solid var(--border);border-radius:12px;background:#F8FBFD}.demo-row button{min-width:82px;min-height:40px;border:1px solid var(--border-strong);border-radius:9px;background:#fff;color:var(--steel);font-weight:900}.demo-row button[aria-pressed="true"]{background:var(--steel);color:#fff}.demo-preview{padding:18px;border-radius:12px;background:#F5F9FC;border:1px solid var(--border)}.demo-preview.is-dense{line-height:1.45}.demo-preview.is-calm{font-size:18px}
.mobile-experience{display:grid;grid-template-columns:minmax(220px,.7fr) 1.3fr;gap:28px;align-items:center;background:linear-gradient(135deg,#fff,#EAF4FB);border:1px solid var(--border);border-radius:16px;padding:24px}.app-brandline{display:flex;align-items:center;gap:12px;margin-bottom:12px}.app-brandline strong{color:var(--ink);font-size:19px}.feature-list{display:grid;gap:10px}.feature-list div{padding-left:15px;border-left:3px solid var(--mint)}.feature-list strong{color:var(--ink);display:block}.feature-list p{margin:0;font-size:15px}
.boundary-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.boundary-grid article{background:#fff;border:1px solid var(--border);border-radius:14px;padding:20px}.boundary-grid article:last-child{grid-column:span 2}.boundary-grid h2{font-size:21px;margin:0 0 8px;color:var(--ink)}.boundary-grid p{margin:0 0 12px}.boundary-grid a{font-weight:900}
.steps{counter-reset:step;display:grid;gap:14px}.step{display:grid;grid-template-columns:58px 1fr;gap:16px;align-items:start;padding:18px;border:1px solid var(--border);border-radius:14px;background:#fff}.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);display:grid;place-items:center;width:50px;height:50px;border-radius:12px;background:#E7F4FD;color:var(--steel);font-weight:900}.step h3{margin:0 0 6px;color:var(--ink)}.step p{margin:0}.status-board{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}.status-col{background:#fff;border:1px solid var(--border);border-radius:14px;padding:17px}.status-col h3{margin:0 0 9px;color:var(--ink);font-size:17px}.status-col p{font-size:14px;margin:0}.status-dot{width:10px;height:10px;border-radius:50%;background:var(--brand);display:inline-block;margin-right:7px}.map-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;position:relative}.map-stop{position:relative;background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px;min-height:150px}.map-stop:not(:last-child)::after{content:"→";position:absolute;right:-13px;top:50%;transform:translateY(-50%);z-index:2;color:var(--steel);font-weight:900}.map-stop h3{margin:8px 0;color:var(--ink)}.map-stop p{margin:0;font-size:15px}
.note-article{background:#fff;border:1px solid var(--border);border-radius:16px;padding:30px}.note-article h2{margin:26px 0 10px;color:var(--ink);font-size:25px}.note-article h2:first-of-type{margin-top:0}.editor-note{border-left:4px solid var(--mint);background:#F0FAF8;padding:16px 18px;border-radius:0 12px 12px 0}.editor-note strong{color:var(--ink)}
.policy-groups{display:grid;gap:14px}.policy-group{background:#fff;border:1px solid var(--border);border-radius:14px;padding:22px}.policy-group h2{margin:0 0 8px;color:var(--ink);font-size:22px}.policy-group p{margin:0 0 10px}.policy-group ul{margin-top:8px}.help-index{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.help-index a{display:block;background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px;font-weight:900}.help-index span{display:block;color:var(--muted);font-size:14px;font-weight:500;margin-top:5px}
details{background:#fff;border:1px solid var(--border);border-radius:12px;padding:0 18px}details+details{margin-top:12px}summary{min-height:54px;display:flex;align-items:center;cursor:pointer;color:var(--ink);font-weight:900}details p{margin:0 0 18px;color:var(--text)}
.site-footer{background:#174D78;color:#DDEBFA;padding:46px 22px calc(46px + env(safe-area-inset-bottom))}.footer-inner{max-width:var(--max);margin:0 auto}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:26px}.footer-logo{display:inline-flex;align-items:center;color:#fff}.footer-logo span{font-size:22px;font-weight:900}.footer-brand strong{font-size:20px;color:#fff}.footer-brand>span{font-size:13px;letter-spacing:.08em;color:#B8DDF3}.footer-links{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:26px}.footer-links h2{font-size:16px;margin:0 0 10px;color:#fff}.footer-links a{display:block;color:#DDEBFA;margin:6px 0;font-size:14px}.footer-note{max-width:900px;margin:28px 0 10px;color:#D2E6F5}.copyright{margin:0;color:#B8DDF3;font-size:14px}
.overlay{position:fixed;inset:0;z-index:89;background:rgba(16,38,58,.48);opacity:0;transition:opacity .18s ease}.overlay.is-open{opacity:1}.dialog,.sheet{position:fixed;z-index:90;visibility:hidden;opacity:0;pointer-events:none;transition:opacity .18s ease,transform .18s ease}.dialog.is-open,.sheet.is-open{visibility:visible;opacity:1;pointer-events:auto}.search-dialog{left:50%;top:50%;transform:translate(-50%,-46%);width:min(640px,calc(100% - 32px));max-height:82vh;overflow:auto;background:#fff;border:1px solid var(--border);border-radius:16px;padding:24px;box-shadow:0 26px 70px rgba(16,38,58,.25)}.search-dialog.is-open{transform:translate(-50%,-50%)}.dialog-head,.sheet-head{display:flex;align-items:center;justify-content:space-between;gap:16px}.dialog-head h2,.sheet-head h2{margin:0;color:var(--ink);font-size:24px}.search-label{display:block;margin:18px 0 7px;color:var(--ink);font-weight:900}.search-input{width:100%;min-height:50px;border:1px solid var(--border-strong);border-radius:10px;padding:10px 13px;color:var(--ink);background:#FBFDFE}.search-hint{font-size:14px;color:var(--muted);margin:8px 0 14px}.search-results{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}.search-results a{min-height:44px;padding:9px 12px;border:1px solid var(--border);border-radius:10px;background:#F7FBFD;font-weight:800}.search-empty{margin:16px 0 0;padding:12px;border-radius:10px;background:var(--bg-deep);color:var(--muted)}
.sheet{left:50%;bottom:0;transform:translate(-50%,24px);width:min(980px,calc(100% - 32px));max-height:82vh;overflow:auto;background:#fff;border-radius:18px 18px 0 0;border:1px solid var(--border);box-shadow:0 -20px 60px rgba(16,38,58,.18);padding:24px}.sheet.is-open{transform:translate(-50%,0)}.sheet-brand{display:flex;align-items:center;gap:13px}.menu-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-top:22px}.menu-grid h3{margin:0 0 10px;color:var(--ink);font-size:17px}.menu-item{display:block;border:1px solid var(--border);border-radius:11px;padding:11px 12px;margin-bottom:8px;color:var(--text)}.menu-item strong{display:block;color:var(--ink);font-size:15px}.menu-item span{display:block;color:var(--muted);font-size:12px;line-height:1.5;margin-top:3px}.menu-item:hover,.menu-item.is-current{background:#EAF5FB;text-decoration:none}.mobile-bottom{display:none}
@media (max-width:1100px){.page-shell{grid-template-columns:210px minmax(0,1fr);gap:24px}.task-strip{grid-template-columns:repeat(2,minmax(0,1fr))}.status-board{grid-template-columns:repeat(3,minmax(0,1fr))}.menu-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:960px){.page-shell{grid-template-columns:1fr}.category-rail{display:none}.page-hero{grid-template-columns:1fr}.people-panel,.lab-grid,.mobile-experience,.organize-grid{grid-template-columns:1fr}.map-grid{grid-template-columns:repeat(2,1fr)}.map-stop:not(:last-child)::after{display:none}.footer-links{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:760px){:root{--top:68px}body{font-size:16px;padding-bottom:calc(58px + env(safe-area-inset-bottom))}.topbar-inner{padding:0 16px}.brand-state,.app-link{display:none}.brand img{height:30px}.brand-word{font-size:20px}.top-actions{gap:7px}.icon-button{padding:8px 11px}.page-shell{padding:24px 16px 44px}.content-page{gap:20px}.page-hero,.section-card,.cover-copy,.note-article{padding:20px}.page-hero h1,.cover-copy h1{font-size:30px}.lead{font-size:17px}.text-grid,.text-grid.three,.editor-board,.media-band,.people-panel,.mobile-experience,.lab-grid{grid-template-columns:1fr}.media-band.reverse .media-frame{order:0}.task-strip{grid-template-columns:1fr}.topic-mosaic{grid-template-columns:1fr}.topic:nth-child(n){grid-column:auto}.boundary-grid{grid-template-columns:1fr}.boundary-grid article:last-child{grid-column:auto}.status-board{grid-template-columns:1fr}.map-grid{grid-template-columns:1fr}.help-index{grid-template-columns:1fr}.end-action{align-items:flex-start;flex-direction:column}.footer-links{grid-template-columns:1fr 1fr;gap:20px}.site-footer{padding-left:16px;padding-right:16px;padding-bottom:calc(82px + env(safe-area-inset-bottom))}.footer-brand{flex-wrap:wrap}.search-results{grid-template-columns:1fr}.sheet{width:100%;max-height:82vh;padding:20px 16px}.menu-grid{grid-template-columns:1fr}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:80;height:calc(58px + env(safe-area-inset-bottom));padding:5px 8px env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);gap:4px;background:rgba(243,247,251,.97);border-top:1px solid var(--border);box-shadow:0 -8px 20px rgba(16,38,58,.08)}.mobile-bottom a{min-width:0;display:grid;place-items:center;border-radius:9px;color:var(--muted);font-size:13px;font-weight:900;white-space:nowrap}.mobile-bottom a.is-current{background:var(--steel);color:#fff;text-decoration:none}.shelf-layer{grid-template-columns:1fr}.search-dialog{padding:20px 16px}}
@media (max-width:390px){.top-actions .icon-button{font-size:14px;padding:7px 9px}.brand{gap:8px}.brand-word{font-size:18px}.footer-links{grid-template-columns:1fr}.button-row{display:grid}.btn{width:100%}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}