:root{--bg:#F4F3F1;--deep:#E6E4E0;--paper:#FFFFFF;--soft:#EDECEA;--ink:#161616;--text:#2A2A2A;--muted:#5C5C5C;--faint:#8A8A8A;--brand:#161616;--gray:#2E2E2E;--silver:#C8C4BC;--ember:#B43A32;--frost:#FAF9F7;--line:rgba(22,22,22,.14);--shadow:0 12px 28px rgba(16,16,16,.08);--glow:0 6px 16px rgba(16,16,16,.18)}
*{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",sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{display:block;max-width:100%;object-fit:contain;object-position:center}.shell{width:min(960px,calc(100% - 32px));margin:0 auto}.ink-edge{position:fixed;left:0;right:0;top:0;height:18px;background:#161616;color:#FAF9F7;z-index:1000;font-size:12px}.edge-inner{height:18px;display:flex;align-items:center;justify-content:space-between}.edge-search{height:18px;border:0;background:transparent;color:#FAF9F7;padding:0 2px}.masthead{position:fixed;left:0;right:0;top:18px;height:54px;background:rgba(250,249,247,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(8px);z-index:999}.masthead-inner{height:54px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:9px;min-height:44px}.logo-holder,.footer-logo,.tray-brand>span{width:118px;height:26px;display:flex;align-items:center}.logo-img{max-height:24px;width:auto}.brand strong{font-size:16px;color:var(--ink)}.mast-actions{display:flex;align-items:center;gap:8px}.text-link,.menu-toggle{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 14px;border-radius:10px}.text-link{background:#fff;border:1px solid var(--line);color:var(--ink)}.menu-toggle{border:0;color:#FAF9F7;background:linear-gradient(135deg,#3A3A3A 0%,#161616 55%,#0C0C0C 100%);box-shadow:var(--glow)}.pin-nav{position:fixed;left:0;right:0;top:72px;height:44px;background:var(--soft);border-bottom:1px solid 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14px}.eyebrow{font-size:12px;letter-spacing:.12em;color:var(--ember);font-weight:700}.lead{font-size:16px;line-height:1.8;color:var(--text);max-width:760px}.hero-intro{padding:22px 0 28px;border-bottom:1px solid var(--line)}.single-index{display:flex;align-items:center;gap:10px;margin-bottom:18px}.single-index i{width:12px;height:16px;border-radius:2px;background:var(--brand);box-shadow:var(--glow)}.single-index a{min-height:44px;display:inline-flex;align-items:center;padding:0 15px;border:1px solid var(--line);background:#fff;border-radius:10px;color:var(--ink)}.hero-actions,.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.btn-primary,.btn-secondary{min-height:42px;display:inline-flex;align-items:center;justify-content:center;padding:0 17px;border-radius:10px;font-size:14px;transition:filter .18s,box-shadow .18s,transform .18s}.btn-primary{color:#FAF9F7;background:linear-gradient(135deg,#3A3A3A 0%,#161616 55%,#0C0C0C 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.media-slot{margin-bottom:14px}.status-strip{background:var(--deep);border-radius:10px;padding:18px;display:grid;grid-template-columns:1fr 280px;gap:20px;align-items:center}.status-row{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}.status{font-size:13px;padding:4px 9px;border-radius:999px;background:#fff;color:var(--gray);border:1px solid var(--line)}.status.current{background:var(--brand);color:#FAF9F7}.annotation{display:grid;grid-template-columns:1fr 320px;gap:24px;align-items:start}.annotation-copy{padding-left:18px;border-left:3px solid var(--ember)}.topic-directory{display:grid;gap:10px}.topic-link{display:grid;grid-template-columns:48px 1fr auto;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 14px;min-height:68px}.topic-num{width:40px;height:40px;border-radius:8px;display:grid;place-items:center;background:var(--soft);color:var(--ink);font-weight:700}.topic-link 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var(--line);border-radius:10px;padding:16px}.mini-card strong{display:block;color:var(--ink);margin-bottom:6px}.process-list{display:grid;gap:12px}.process-item{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px;position:relative}.process-item:before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:4px;background:var(--silver)}.process-item strong{display:block;margin-left:10px}.process-item p{margin:6px 0 0 10px}.faq-list{display:grid;gap:12px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px}.faq-item h2{font-size:16px}.policy-block{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px;margin-bottom:14px}.policy-block h2{margin-bottom:8px}.banner-slot{height:200px;width:100%;margin:12px 0 20px}.brand-panel{background:#fff;border:1px solid var(--line);border-radius:10px;padding:20px}.footer{background:#101010;color:#E6E4E0;border-top:1px solid rgba(200,196,188,.38);padding:32px 0 calc(28px + env(safe-area-inset-bottom))}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:24px}.footer-brand strong{display:block;color:#FAF9F7}.footer-brand small{display:block;color:#C8C4BC}.footer-columns{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.footer h2{font-size:13px;color:#FAF9F7;margin-bottom:8px}.footer section a{display:block;font-size:13px;color:#E6E4E0;padding:4px 0}.footer-note,.copyright{font-size:13px;color:#C8C4BC}.footer-note{margin-top:22px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12)}.screen-mask{position:fixed;inset:0;background:rgba(0,0,0,.48);z-index:1100;opacity:0;transition:opacity .18s;pointer-events:none}.screen-mask.show{opacity:1}.tray{position:fixed;z-index:1200;left:0;right:0;bottom:0;width:100%;max-height:200px;background:#fff;border-radius:14px 14px 0 0;box-shadow:0 -24px 60px rgba(16,16,16,.18);transform:translateY(104%);transition:transform .2s;visibility:hidden;pointer-events:none;overflow:hidden}.tray.open{transform:translateY(0);visibility:visible;pointer-events:auto}.tray-head{height:54px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid var(--line)}.tray-brand{display:flex;align-items:center;gap:8px}.tray-brand>span{width:100px}.tray-body{height:146px;overflow:auto;padding:10px 16px;display:grid;grid-template-columns:1fr 1fr 1.25fr;gap:16px}.tray-body section{min-width:0}.tray-body h2{font-size:13px;color:var(--faint);margin:0 0 4px}.tray-body a{display:flex;align-items:flex-start;gap:7px;padding:4px 6px;border-radius:8px}.tray-body a:hover{background:var(--soft)}.tray-body b{display:block;color:var(--ink);font-size:13px}.tray-body small{display:none}.close-btn{min-width:54px;min-height:38px;border:1px solid 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@media (max-width:760px){.shell{width:calc(100% - 32px)}.pin-nav{display:none}.page-main{padding-top:92px;padding-bottom:74px}.brand strong{display:none}.logo-holder{width:105px}.mast-actions{gap:4px}.text-link,.menu-toggle{padding:0 10px}.section{padding:27px 0}.section-head{display:block}.section-head p{margin-top:6px}.pin-cut,.ink-two,.pin-pages,.status-strip,.annotation,.scene-band,.app-wrap,.grid-two,.grid-three{grid-template-columns:1fr}.app-flow .app-figure{float:none;width:100%;margin:0 0 18px 0}.slot-small,.slot-app{width:100%}.slot-small{height:176px}.slot-app{height:300px}.app-figure{position:static}.app-icon{margin-left:0}.topic-link{grid-template-columns:42px 1fr}.topic-link>span:last-child{display:none}.footer-columns{grid-template-columns:1fr 1fr}.tray{max-height:66vh}.tray-head{height:60px}.tray-body{height:calc(66vh - 60px);display:block;overflow:auto;padding:12px 16px 22px}.tray-body section{padding:8px 0}.tray-body h2{margin-bottom:6px}.tray-body a{padding:9px}.tray-body b{font-size:14px}.tray-body small{display:block;color:var(--faint);font-size:12px;line-height:1.45}.search-sheet{inset:0;width:100%;height:100%;transform:none;border:0;border-radius:0;background:#161616;color:#FAF9F7}.search-sheet.open{transform:none}.search-box{padding:24px 16px}.search-top strong,.search-box label{color:#FAF9F7}.search-box .close-btn{color:#FAF9F7;background:transparent;border-color:rgba(255,255,255,.35)}.search-list a{background:#FAF9F7;color:#161616}.mobile-tabs{position:fixed;z-index:1050;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid var(--line)}.mobile-tabs a{display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--muted)}.mobile-tabs .is-current{background:var(--brand);color:#FAF9F7;box-shadow:var(--glow)}.footer{padding-bottom:calc(76px + env(safe-area-inset-bottom))}}
@media (max-width:420px){.footer-columns{grid-template-columns:1fr}.hero-actions,.actions{display:grid;grid-template-columns:1fr}.btn-primary,.btn-secondary{width:100%}}