:root{--bg:#0D0D0D;--deep:#070707;--panel:#171717;--sub:#222;--title:#F2F2F2;--text:#C8C8C8;--muted:#9A9A9A;--soft:#6E6E6E;--silver:#C8C8C8;--bright:#E8E8E8;--ink:#1A1A1A;--red:#B85A5A;--border:rgba(232,232,232,.12);--strong:rgba(232,232,232,.36);--shadow:0 12px 28px rgba(0,0,0,.45);--max:1120px}
*{box-sizing:border-box}html{background:var(--bg);scroll-behavior:smooth;overflow-x:hidden}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:15px;line-height:1.7;overflow-x:hidden;min-width:0}body.ui-locked{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{display:block;max-width:100%}
.skip-link{position:fixed;left:16px;top:-60px;z-index:9999;background:var(--bright);color:var(--bg);padding:10px 14px;border-radius:8px}.skip-link:focus{top:12px}
.ink-line{position:fixed;top:0;left:0;right:0;height:22px;z-index:1000;background:var(--deep);border-bottom:1px solid var(--border);color:var(--silver);font-size:12px}.top-shell,.material-shell,.footer-shell{width:min(var(--max),calc(100% - 32px));margin:0 auto}.top-shell{height:22px;display:flex;align-items:center;justify-content:space-between}.ink-search{border:0;background:transparent;color:var(--silver);height:22px;padding:0 2px}.ink-search:hover,.ink-search:focus-visible{color:var(--bright);outline:none}
.material-bar{position:fixed;top:22px;left:0;right:0;height:60px;z-index:999;background:var(--ink);border-bottom:1px solid var(--strong)}.material-shell{height:60px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.brand-home{justify-self:start;min-height:44px;display:flex;align-items:center;color:var(--title);font-weight:700;font-size:16px}.brand-home img{height:28px;width:auto;object-fit:contain;object-position:center}.drawer-trigger{justify-self:center;min-width:76px;height:40px;border-radius:10px;border:1px solid var(--strong);background:var(--deep);color:var(--bright);font-weight:700}.app-link{justify-self:end;display:inline-flex;align-items:center;justify-content:center;height:40px;min-width:88px;border:1px solid var(--strong);border-radius:10px;color:var(--bright);background:var(--deep)}.drawer-trigger:hover,.drawer-trigger:focus-visible,.app-link:hover,.app-link:focus-visible{border-color:var(--bright);outline:none}
.case-tabs{position:fixed;top:82px;left:0;right:0;height:40px;z-index:998;background:var(--deep);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:center;gap:8px;font-size:13px}.case-tabs a{min-width:88px;height:30px;display:flex;align-items:center;justify-content:center;border-radius:8px;color:var(--silver)}.case-tabs a:hover,.case-tabs a:focus-visible{background:var(--panel);outline:none}.case-tabs a.is-active{background:var(--silver);color:var(--bg);font-weight:700}
.site-main{padding-top:122px;min-height:70vh}.page-shell{width:min(var(--max),calc(100% - 32px));margin:0 auto}.page-hero{padding:44px 0 28px}.eyebrow{display:inline-flex;align-items:center;min-height:28px;padding:0 10px;border:1px solid var(--border);border-radius:999px;color:var(--muted);font-size:12px;letter-spacing:.06em;background:var(--deep)}h1,h2,h3,p{margin-top:0}h1{font-size:24px;line-height:1.3;color:var(--title);margin:14px 0 12px}h2{font-size:20px;line-height:1.4;color:var(--title);margin-bottom:12px}h3{font-size:16px;line-height:1.5;color:var(--bright);margin-bottom:8px}p{margin-bottom:14px}.lead{max-width:820px;color:var(--silver);font-size:16px}.muted{color:var(--muted)}.text-link{color:var(--bright);text-decoration:underline;text-decoration-color:rgba(232,232,232,.35);text-underline-offset:3px}.text-link:hover,.text-link:focus-visible{text-decoration-color:var(--bright);outline:none}
.section{padding:24px 0 42px;border-top:1px solid var(--border)}.section:first-of-type{border-top:0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:18px}.section-head p{margin:0;color:var(--muted);max-width:560px}.media-slot{width:100%;background:var(--ink);border:1px solid var(--border);border-radius:14px;display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.banner-slot{height:260px}.card-slot{height:180px}.feature-slot{height:200px}.app-slot{height:360px}.brand-slot{height:220px}
.buttons{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 18px;border-radius:10px;font-size:14px;white-space:nowrap;border:1px solid transparent}.btn-primary{color:var(--bg);background:linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%);font-weight:700}.btn-secondary{color:var(--bright);background:var(--deep);border-color:var(--strong)}.btn:hover,.btn:focus-visible{transform:translateY(-1px);outline:2px solid rgba(232,232,232,.24);outline-offset:2px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.card,.number-card,.shelf-item,.note-card,.policy-block,.faq-item{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:18px;box-shadow:var(--shadow)}.card p:last-child,.number-card p:last-child,.note-card p:last-child,.policy-block p:last-child{margin-bottom:0}.number-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:18px}.num,.big-num{display:block;color:var(--bright);font-size:30px;line-height:1;font-weight:800;letter-spacing:-.04em;margin-bottom:12px}.big-list{display:grid;gap:12px}.big-list .number-card{display:grid;grid-template-columns:72px 1fr;gap:16px;align-items:start}.big-list .big-num{font-size:42px;margin:2px 0 0}.shelf{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.shelf-item{min-height:160px;display:flex;flex-direction:column;justify-content:space-between}.shelf-item span{color:var(--muted);font-size:13px}.shelf-item strong{color:var(--title);font-size:16px}.shelf-item p{margin:8px 0 0}
.timeline{position:relative;margin-left:10px;padding-left:28px}.timeline:before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;background:var(--strong)}.timeline-item{position:relative;margin-bottom:16px}.timeline-item:before{content:"";position:absolute;left:-28px;top:7px;width:11px;height:11px;border-radius:50%;background:var(--silver);box-shadow:0 0 0 5px var(--bg)}.status{display:inline-flex;min-height:26px;align-items:center;padding:0 9px;border-radius:999px;background:var(--sub);color:var(--bright);font-size:12px;margin-bottom:8px;border:1px solid var(--border)}.note-list,.policy-list,.faq-list,.plain-list{display:grid;gap:12px}.note-card{border-left:3px solid var(--silver)}.policy-block{box-shadow:none}.callout{padding:18px;border:1px solid rgba(184,90,90,.45);background:rgba(184,90,90,.08);border-radius:12px;color:var(--silver)}.callout strong{color:var(--bright)}
.inline-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.inline-nav a{min-height:40px;display:inline-flex;align-items:center;padding:0 13px;border:1px solid var(--border);border-radius:10px;background:var(--panel);color:var(--bright)}.inline-nav a:hover,.inline-nav a:focus-visible{border-color:var(--strong);outline:none}.app-layout{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:24px;align-items:center}.app-mark{display:flex;align-items:center;gap:12px;margin-bottom:14px}.icon-box{width:48px;height:48px;border-radius:12px;background:var(--ink);border:1px solid var(--border);overflow:hidden;display:flex;align-items:center;justify-content:center}.icon-box img{width:48px;height:48px;object-fit:contain}.definition-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.definition{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:18px}.definition dt{color:var(--title);font-weight:700;margin-bottom:6px}.definition dd{margin:0}.table-like{display:grid;gap:8px}.table-row{display:grid;grid-template-columns:130px 1fr;gap:14px;padding:14px 16px;background:var(--panel);border:1px solid var(--border);border-radius:10px}.table-row strong{color:var(--bright)}.index-label{color:var(--red);font-size:12px;font-weight:700;letter-spacing:.08em}.quote-box{border-left:3px solid var(--red);padding:14px 18px;background:rgba(184,90,90,.06);border-radius:0 10px 10px 0}
.site-footer{background:var(--deep);border-top:1px solid var(--border);margin-top:36px;padding:34px 0 calc(34px + env(safe-area-inset-bottom))}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:24px}.footer-logo{min-width:60px;min-height:44px;display:flex;align-items:center}.footer-logo img{height:28px;width:auto;object-fit:contain}.footer-brand strong{display:block;color:var(--title);font-size:16px}.footer-brand span{display:block;color:var(--muted);font-size:12px}.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.footer-grid section{display:grid;align-content:start;gap:6px}.footer-grid h2{font-size:13px;color:var(--bright);margin:0 0 6px}.footer-grid a{font-size:13px;color:var(--silver)}.footer-notice{font-size:13px;color:var(--muted);max-width:860px;margin:26px 0 8px}.copyright{font-size:13px;color:var(--silver);margin:0}
.page-overlay{position:fixed;inset:0;z-index:1190;background:rgba(0,0,0,.68);opacity:0;visibility:hidden;pointer-events:none;transition:.22s ease}.page-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.material-drawer{position:fixed;z-index:1200;left:0;top:0;bottom:0;width:400px;max-width:86vw;background:var(--deep);border-right:1px solid var(--strong);box-shadow:var(--shadow);padding:18px;overflow-y:auto;transform:translateX(-104%);visibility:hidden;pointer-events:none;transition:.24s ease}.material-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--border)}.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(--title)}.drawer-brand span{display:block;font-size:11px;color:var(--muted)}.close-btn{min-height:40px;padding:0 12px;border-radius:9px;border:1px solid var(--strong);background:var(--panel);color:var(--bright)}.drawer-group{padding:18px 0;border-bottom:1px solid var(--border)}.drawer-group h2{font-size:13px;color:var(--muted);margin-bottom:8px}.drawer-group a{display:block;padding:10px;border-radius:10px}.drawer-group a:hover,.drawer-group a:focus-visible{background:var(--panel);outline:none}.drawer-group strong{display:block;color:var(--title);font-size:14px}.drawer-group span{display:block;color:var(--muted);font-size:12px;line-height:1.55;margin-top:2px}
.search-panel{position:fixed;z-index:1210;left:0;right:0;top:82px;visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-8px);transition:.2s ease}.search-panel.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:none}.search-card{width:min(760px,calc(100% - 32px));margin:0 auto;background:var(--ink);border:1px solid var(--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:16px}.search-head strong{display:block;color:var(--title);font-size:16px}.search-head span{display:block;color:var(--muted);font-size:12px}.search-card label{display:block;margin:16px 0 6px;color:var(--silver);font-size:13px}.search-card input{width:100%;height:44px;border-radius:10px;border:1px solid var(--strong);background:var(--deep);color:var(--title);padding:0 12px}.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.search-presets a{min-height:40px;display:inline-flex;align-items:center;padding:0 12px;background:var(--panel);border:1px solid var(--border);border-radius:9px}.mobile-bottom{display:none}
@media(max-width:820px){.grid-3,.grid-2,.shelf,.number-grid,.definition-grid,.footer-grid{grid-template-columns:1fr 1fr}.app-layout{grid-template-columns:1fr}.big-list .number-card{grid-template-columns:60px 1fr}}
@media(max-width:640px){.top-shell,.material-shell,.footer-shell,.page-shell{width:calc(100% - 32px)}.material-shell{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:8px}.brand-home img{max-width:104px}.drawer-trigger{min-width:70px}.app-link{min-width:76px}.case-tabs{display:none}.site-main{padding-top:82px;padding-bottom:64px}.page-hero{padding-top:30px}.grid-3,.grid-2,.shelf,.number-grid,.definition-grid,.footer-grid{grid-template-columns:1fr}.section-head{align-items:start;flex-direction:column}.site-footer{padding-bottom:calc(88px + env(safe-area-inset-bottom))}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:1005;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);background:var(--deep);border-top:1px solid var(--strong)}.mobile-bottom a{height:48px;display:flex;align-items:center;justify-content:center;font-size:12px}.mobile-bottom a.is-active{background:var(--silver);color:var(--bg);font-weight:700}.material-drawer{width:86vw;max-width:86vw}.search-panel{inset:0;top:0;background:var(--deep);overflow:auto}.search-card{width:100%;min-height:100%;margin:0;border:0;border-radius:0;padding:24px 16px 90px}.table-row{grid-template-columns:1fr;gap:4px}.app-slot{height:340px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}

.media-gap{height:18px}.hero-copy{margin-top:20px}.spaced-top{margin-top:18px}.shelf.spaced-top{margin-top:16px}.app-title{margin:2px 0 0}