:root{
  --bg:#0D0D0D;--deep:#070707;--panel:#171717;--panel2:#222222;--text:#C8C8C8;--muted:#9A9A9A;--faint:#6E6E6E;--white:#F2F2F2;--silver:#E8E8E8;--ink:#1A1A1A;--red:#B85A5A;--line:rgba(232,232,232,.12);--line-strong:rgba(232,232,232,.36);--shadow:0 12px 28px rgba(0,0,0,.45);--radius:12px;--max:1120px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}a:hover{color:var(--white)}
button{font:inherit;color:inherit}
a:focus-visible,button:focus-visible{outline:2px solid var(--silver);outline-offset:3px}
img{max-width:100%;display:block}
body.modal-open{overflow:hidden}
.site-header{position:fixed;inset:0 0 auto 0;z-index:70}
.ink-line{height:22px;background:var(--deep);border-bottom:1px solid var(--line)}
.top-inner,.material-inner,.case-tabs-inner,.footer-inner{max-width:var(--max);margin:0 auto}
.top-inner{height:22px;padding:0 16px;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--silver);letter-spacing:.02em}
.plain-control,.drawer-trigger,.close-control{border:0;background:transparent;cursor:pointer;min-height:44px;padding:0 12px}
.ink-line .plain-control{min-height:22px;padding:0 4px;color:var(--silver);font-size:12px}
.material-bar{height:60px;background:var(--ink);border-bottom:1px solid var(--line)}
.material-inner{height:60px;padding:0 16px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}
.brand-link{justify-self:start;display:flex;align-items:center;min-height:44px}.brand-link img{height:28px;width:auto;object-fit:contain}.brand-fallback{font-weight:700;color:var(--silver);font-size:16px;letter-spacing:.08em}
.drawer-trigger{justify-self:center;border:1px solid var(--line-strong);border-radius:10px;min-width:76px;height:44px;color:var(--silver);background:var(--deep)}
.drawer-trigger:hover{background:var(--panel2)}
.app-link{justify-self:end;display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 16px;border-radius:10px;background:linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%);color:#0D0D0D;font-size:14px;font-weight:700;white-space:nowrap}.app-link:hover{color:#0D0D0D;filter:brightness(1.06)}
.case-tabs{height:40px;background:var(--deep);border-bottom:1px solid var(--line)}
.case-tabs-inner{height:40px;display:flex;align-items:stretch;justify-content:center}.case-tabs a{display:flex;align-items:center;justify-content:center;min-width:120px;padding:0 18px;font-size:13px;color:var(--muted);border-left:1px solid transparent;border-right:1px solid transparent}.case-tabs a:hover{color:var(--white);background:var(--panel)}.case-tabs a.is-current{background:var(--silver);color:var(--bg)}
.site-main{padding-top:122px;min-height:70vh;padding-bottom:30px}
.container{width:min(calc(100% - 32px),var(--max));margin:0 auto}
.page-hero{padding:48px 0 26px;border-bottom:1px solid var(--line)}
.eyebrow{font-size:12px;color:var(--muted);letter-spacing:.18em;text-transform:uppercase;margin-bottom:10px}.page-hero h1,.cover-copy h1{margin:0;color:var(--white);font-size:24px;line-height:1.3}.page-hero p{max-width:820px;margin:14px 0 0;color:var(--text)}
.section{padding:32px 0;border-bottom:1px solid var(--line)}.section:last-child{border-bottom:0}.section h2{font-size:20px;line-height:1.35;color:var(--white);margin:0 0 14px}.section h3{font-size:16px;color:var(--silver);margin:0 0 8px}.section p{margin:0 0 14px}.section p:last-child{margin-bottom:0}
.cover{padding:28px 0 34px}.cover-media,.media-slot{background:var(--ink);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center;overflow:hidden}.cover-media{height:260px}.media-slot{height:180px}.media-slot.tall{height:200px}.media-slot.app-tall{height:360px}.media-img{width:100%;height:100%;object-fit:contain;object-position:center}.cover-copy{padding:24px 0 0;max-width:840px}.cover-copy p{margin:14px 0 18px}.actions{display:flex;flex-wrap:wrap;gap:12px}.btn-primary,.btn-secondary{display:inline-flex;align-items:center;justify-content:center;height:42px;min-width:130px;padding:0 18px;border-radius:10px;font-size:14px;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%);color:var(--bg);font-weight:700}.btn-primary:hover{color:var(--bg);filter:brightness(1.06)}.btn-secondary{border:1px solid var(--line-strong);background:var(--deep);color:var(--silver)}.btn-secondary:hover{background:var(--panel2);color:var(--white)}
.grid-3,.grid-2,.shelf-grid,.info-grid{display:grid;gap:16px}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.shelf-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.info-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.card,.shelf,.note-card,.faq-item,.timeline-item,.number-card,.term-block{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}.card .media-slot{margin:-2px -2px 16px}.card h2,.card h3{margin-top:0}.card p{margin-bottom:0}.card-link{display:inline-flex;margin-top:14px;color:var(--silver);border-bottom:1px solid var(--line-strong)}
.number-list{display:grid;gap:12px}.number-card{display:grid;grid-template-columns:52px 1fr;gap:14px;align-items:start}.number-mark{font-size:26px;line-height:1;color:var(--silver);font-weight:700}.number-card h3{margin:0 0 6px}.number-card p{margin:0}
.timeline{position:relative;margin-left:10px;padding-left:26px;display:grid;gap:14px}.timeline:before{content:"";position:absolute;left:5px;top:10px;bottom:10px;width:1px;background:var(--line-strong)}.timeline-item{position:relative}.timeline-item:before{content:"";position:absolute;left:-28px;top:22px;width:9px;height:9px;border-radius:50%;background:var(--silver);box-shadow:0 0 0 5px var(--bg)}.status{display:inline-flex;align-items:center;min-height:26px;padding:0 9px;border:1px solid var(--line-strong);border-radius:999px;font-size:12px;color:var(--silver);margin-bottom:8px}
.shelf{min-height:180px;display:flex;flex-direction:column}.shelf-index{font-size:12px;color:var(--faint);letter-spacing:.12em}.shelf h3{margin:12px 0 8px}.shelf p{margin:0}.shelf a{margin-top:auto;padding-top:14px;color:var(--silver)}
.note-list{display:grid;gap:12px}.note-card h3{margin-top:0}.note-card p{margin-bottom:0}.note-meta{font-size:12px;color:var(--muted);margin-bottom:8px}
.callout{border-left:3px solid var(--red);background:var(--panel);padding:18px 20px;border-radius:0 var(--radius) var(--radius) 0;color:var(--text)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:22px}.article-main{min-width:0}.side-index{position:sticky;top:144px;align-self:start;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px}.side-index h2{font-size:16px}.side-index a{display:block;padding:9px 0;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}.side-index a:last-child{border-bottom:0}.side-index a:hover{color:var(--white)}
.term-block h2{margin-top:0}.term-block ul,.section ul{margin:10px 0 0;padding-left:20px}.term-block li,.section li{margin:6px 0}
.faq-list{display:grid;gap:12px}.faq-item h2,.faq-item h3{margin-top:0}.faq-item p{margin-bottom:0}
.site-footer{background:var(--deep);border-top:1px solid var(--line);padding:36px 0 calc(28px + env(safe-area-inset-bottom));font-size:13px}.footer-inner{padding:0 16px}.footer-brand{display:grid;grid-template-columns:280px 1fr;gap:26px;align-items:start}.footer-logo-row{display:flex;align-items:center;gap:12px}.footer-logo-row img{height:28px;width:auto;object-fit:contain}.footer-logo-row strong{display:block;color:var(--white);font-size:15px}.footer-logo-row span{display:block;color:var(--muted);font-size:11px;letter-spacing:.12em}.footer-brand p{margin:0;color:var(--muted)}.footer-grid{margin-top:26px;padding-top:22px;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.footer-grid h2{font-size:13px;color:var(--white);margin:0 0 10px}.footer-grid a{display:block;color:var(--muted);padding:3px 0}.footer-grid a:hover{color:var(--white)}.footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:24px;padding-top:16px;border-top:1px solid var(--line);color:var(--faint)}.footer-bottom a{color:var(--muted)}
.site-overlay{position:fixed;inset:0;background:rgba(0,0,0,.68);z-index:80;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s ease}.site-overlay.is-visible{opacity:1;visibility:visible;pointer-events:auto}
.material-drawer{position:fixed;z-index:90;inset:0 auto 0 0;width:min(400px,86vw);background:var(--deep);border-right:1px solid var(--line-strong);box-shadow:var(--shadow);transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:transform .25s ease,visibility .25s ease;overflow-y:auto}.material-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{position:sticky;top:0;background:var(--deep);display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px;border-bottom:1px solid var(--line);z-index:2}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-brand img{height:28px;width:auto;object-fit:contain}.drawer-brand strong{display:block;color:var(--white)}.drawer-brand span{display:block;color:var(--muted);font-size:10px;letter-spacing:.12em}.close-control{border:1px solid var(--line-strong);border-radius:10px;min-width:64px;color:var(--silver)}.drawer-groups{padding:14px 16px 24px}.drawer-groups section{padding:12px 0;border-bottom:1px solid var(--line)}.drawer-groups section:last-child{border-bottom:0}.drawer-groups h2{margin:0 0 8px;color:var(--muted);font-size:12px;letter-spacing:.12em}.drawer-groups a{display:block;padding:10px;border-radius:10px}.drawer-groups a:hover{background:var(--panel)}.drawer-groups strong{display:block;color:var(--white);font-size:14px}.drawer-groups span{display:block;color:var(--muted);font-size:12px;line-height:1.5;margin-top:2px}
.search-panel{position:fixed;z-index:95;top:82px;left:0;right:0;visibility:hidden;pointer-events:none;opacity:0;transition:opacity .2s ease,visibility .2s ease}.search-panel.is-open{visibility:visible;pointer-events:auto;opacity:1}.search-card{width:min(calc(100% - 32px),760px);margin:0 auto;background:var(--ink);border:1px solid var(--line-strong);border-radius:0 0 14px 14px;box-shadow:var(--shadow);padding:18px}.search-head{display:flex;align-items:center;justify-content:space-between;gap:14px}.search-head strong{display:block;color:var(--white);font-size:16px}.search-head span{display:block;color:var(--muted);font-size:12px}.search-presets{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 10px}.search-presets a{display:inline-flex;min-height:44px;align-items:center;padding:0 14px;border:1px solid var(--line-strong);border-radius:10px;color:var(--silver)}.search-presets a:hover{background:var(--panel2)}.search-card p{font-size:12px;color:var(--muted);margin:8px 0 0}
.mobile-bottom{display:none}
@media(max-width:860px){
  .case-tabs{display:none}.site-main{padding-top:82px;padding-bottom:70px}.article-layout{grid-template-columns:1fr}.side-index{position:static}.grid-3,.info-grid{grid-template-columns:1fr}.shelf-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-brand{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}
  .mobile-bottom{position:fixed;z-index:60;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--deep);border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(5,1fr)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:48px;font-size:12px;color:var(--muted)}.mobile-bottom a.is-current{background:var(--silver);color:var(--bg)}
}
@media(max-width:640px){
  .material-inner{grid-template-columns:minmax(0,1fr) auto auto;gap:8px}.brand-link img{max-width:112px}.brand-fallback{font-size:15px}.drawer-trigger{min-width:66px;padding:0 10px}.app-link{padding:0 12px}.cover{padding-top:18px}.cover-media{height:260px}.page-hero{padding-top:34px}.grid-2,.shelf-grid{grid-template-columns:1fr}.number-card{grid-template-columns:42px 1fr}.footer-bottom{flex-direction:column}.search-panel{top:0;bottom:0;background:var(--deep)}.search-card{width:100%;height:100%;border:0;border-radius:0;margin:0;padding:calc(24px + env(safe-area-inset-top)) 16px 24px;overflow-y:auto}.search-head{align-items:flex-start}.search-presets{display:grid;grid-template-columns:repeat(2,1fr)}.search-presets a{justify-content:center}.section{padding:26px 0}
}

.actions-gap{margin-top:16px}.number-list-gap{margin-top:14px}.app-icon-row{display:flex;align-items:center;gap:12px;margin-top:14px}.app-icon{width:48px;height:48px;object-fit:contain}