:root{
    color-scheme:dark;--bg:#0D0D0D;--deep:#070707;--panel:#171717;--panel2:#222222;--title:#F2F2F2;--text:#C8C8C8;--muted:#9A9A9A;--soft:#6E6E6E;--silver:#C8C8C8;--bright:#E8E8E8;--ink:#1A1A1A;--mist:#B85A5A;--line:rgba(232,232,232,.12);--line-strong:rgba(232,232,232,.36);--shadow:0 12px 28px rgba(0,0,0,.45);--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;padding-top:122px}
body.ui-locked{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{color:inherit}
img{max-width:100%;display:block}
.bar-inner,.page-wrap,.footer-inner{width:min(var(--max),calc(100% - 32px));margin:0 auto}
.ink-line{position:fixed;z-index:70;top:0;left:0;right:0;height:22px;background:#090909;border-bottom:1px solid var(--line);font-size:12px}
.ink-inner{height:22px;display:flex;align-items:center;justify-content:space-between}
.ink-brand{color:var(--silver);letter-spacing:.05em;white-space:nowrap}
.plain-button,.drawer-open,.drawer-close,.search-close{border:0;background:transparent;cursor:pointer}
.plain-button{font-size:12px;padding:0 8px;min-height:22px;color:var(--bright)}
.material-bar{position:fixed;z-index:69;top:22px;left:0;right:0;height:60px;background:var(--ink);border-bottom:1px solid var(--line-strong)}
.material-inner{height:60px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}
.brand-lockup{justify-self:start;min-width:88px;color:var(--title);font-size:16px;font-weight:700;display:flex;align-items:center;height:44px}
.brand-lockup img,.footer-brand img,.drawer-brand img{height:28px;width:auto;max-width:170px;object-fit:contain;object-position:center}
.drawer-open{justify-self:center;min-width:82px;height:44px;border:1px solid var(--line-strong);border-radius:10px;background:#111;color:var(--bright);font-weight:700;letter-spacing:.08em}
.app-link{justify-self:end;height:44px;min-width:88px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;background:linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%);color:#0D0D0D;font-weight:700;font-size:14px;padding:0 16px}
.case-tabs{position:fixed;z-index:68;top:82px;left:0;right:0;height:40px;background:#101010;border-bottom:1px solid var(--line)}
.case-tabs-inner{height:40px;display:flex;align-items:center;justify-content:center;gap:8px}
.case-tabs a{height:30px;min-width:90px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:13px}
.case-tabs a:hover,.case-tabs a:focus-visible,.case-tabs a.is-current{background:var(--bright);color:var(--bg)}
.site-main{min-height:60vh;padding:32px 0 68px}
.page-wrap{display:block}
.hero-copy{padding:22px 0 6px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--silver);font-size:12px;letter-spacing:.12em;text-transform:uppercase}
.eyebrow:before{content:"";width:28px;height:1px;background:var(--mist)}
h1{font-size:24px;line-height:1.3;margin:8px 0 12px;color:var(--title);letter-spacing:.01em}
h2{font-size:20px;line-height:1.4;margin:0 0 12px;color:var(--title)}
h3{font-size:16px;line-height:1.5;margin:0 0 8px;color:var(--bright)}
p{margin:0 0 14px}
.lead{max-width:820px;color:var(--silver);font-size:16px}
.media-slot{background:var(--ink);border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;align-items:center;justify-content:center;min-height:150px}
.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.banner-slot{height:260px;width:100%;margin:0 0 18px}
.feature-slot{height:180px}.wide-slot{height:200px}.app-slot{height:340px}.article-slot{height:220px}
.button-row{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 8px}
.btn{height:44px;min-width:128px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;font-size:14px;font-weight:700;border:1px solid var(--line-strong);white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%);color:#0D0D0D;border:0}
.btn-secondary{background:#111;color:var(--silver)}
.btn:hover{transform:translateY(-1px)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--bright);outline-offset:3px}
.section{margin-top:30px;padding:24px;background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}
.section.flat{box-shadow:none}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px;border-bottom:1px solid var(--line);padding-bottom:12px}
.section-head p{margin:0;color:var(--muted);max-width:640px}
.grid-2,.grid-3,.grid-4{display:grid;gap:16px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:18px;min-width:0}
.card p{color:var(--muted)}
.card a.more{display:inline-flex;align-items:center;min-height:44px;color:var(--bright);font-weight:700}
.number-card .num,.list-index{font-size:28px;line-height:1;color:var(--bright);font-weight:800;letter-spacing:.04em;margin-bottom:14px}
.number-card .num small{font-size:12px;color:var(--muted);margin-left:4px}
.shelf{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.shelf-item{min-height:180px;display:flex;flex-direction:column;justify-content:space-between;background:#121212;border:1px solid var(--line);border-radius:12px;padding:16px}
.shelf-item span{font-size:12px;color:var(--soft)}
.shelf-item strong{font-size:16px;color:var(--title)}
.shelf-item p{color:var(--muted);font-size:14px}
.timeline{position:relative;margin-top:12px;padding-left:26px}
.timeline:before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:1px;background:var(--line-strong)}
.timeline-item{position:relative;padding:0 0 22px 18px}
.timeline-item:before{content:"";position:absolute;left:-23px;top:7px;width:9px;height:9px;border-radius:50%;background:var(--bright);box-shadow:0 0 0 4px #171717}
.timeline-item .status{display:inline-flex;padding:2px 8px;border-radius:999px;background:#252525;border:1px solid var(--line);font-size:12px;color:var(--silver);margin-bottom:7px}
.notes-list,.method-list,.policy-list{display:grid;gap:12px}
.note-row,.method-row,.policy-row{padding:16px;background:#121212;border:1px solid var(--line);border-radius:12px}
.note-row strong,.method-row strong,.policy-row strong{display:block;color:var(--title);margin-bottom:5px}
.quote-line{border-left:3px solid var(--mist);padding:12px 16px;background:#111;color:var(--silver);border-radius:0 10px 10px 0;margin:16px 0}
.meta-strip{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0 0}
.meta-strip span{font-size:12px;border:1px solid var(--line);border-radius:999px;padding:4px 10px;color:var(--muted);background:#101010}
.faq-list{display:grid;gap:12px}
.faq-item{background:#121212;border:1px solid var(--line);border-radius:12px;padding:18px}
.faq-item h2{font-size:16px}.faq-item p{color:var(--silver)}
.app-panel{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(260px,.9fr);gap:24px;align-items:center}
.icon-inline{display:flex;align-items:center;gap:12px;margin-bottom:12px}.icon-inline img{width:48px;height:48px;object-fit:contain;border-radius:12px}
.link-list{display:grid;gap:10px}.link-list a{display:flex;justify-content:space-between;gap:20px;align-items:center;min-height:48px;padding:10px 14px;background:#121212;border:1px solid var(--line);border-radius:10px}.link-list span{color:var(--muted);font-size:13px}
.site-footer{background:var(--deep);border-top:1px solid var(--line-strong);padding:32px 0 74px;color:var(--silver);font-size:13px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:22px}.footer-brand div,.drawer-brand div{display:flex;flex-direction:column}.footer-brand strong,.drawer-brand strong{font-size:16px;color:var(--title)}.footer-brand span,.drawer-brand span{font-size:11px;color:var(--muted);letter-spacing:.12em}
.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.footer-grid section{display:flex;flex-direction:column;gap:7px}.footer-grid h2{font-size:14px;margin:0 0 4px;color:var(--title)}.footer-grid a{color:var(--muted);min-height:24px}.footer-grid a:hover{color:var(--bright)}
.footer-notice{margin-top:24px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted)}.copyright{color:var(--soft);margin-bottom:0}
.ui-mask{position:fixed;z-index:90;inset:0;background:rgba(0,0,0,.72);opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease}.ui-mask.is-visible{opacity:1;visibility:visible;pointer-events:auto}
.drawer-panel{position:fixed;z-index:100;top:0;bottom:0;left:0;width:400px;max-width:86vw;background:#0B0B0B;border-right:1px solid var(--line-strong);transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s ease;overflow:auto}.drawer-panel.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}
.drawer-head{position:sticky;top:0;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px;background:#0B0B0B;border-bottom:1px solid var(--line)}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-close,.search-close{min-width:64px;height:40px;border:1px solid var(--line-strong);border-radius:10px;background:#141414}.drawer-body{padding:14px 16px 24px}.drawer-group{padding:10px 0}.drawer-group h2{font-size:13px;color:var(--soft);letter-spacing:.12em;margin:0 0 8px}.drawer-group a{display:block;padding:12px;border-radius:10px;border:1px solid transparent}.drawer-group a:hover{background:#151515;border-color:var(--line)}.drawer-group strong{display:block;color:var(--title);font-size:15px}.drawer-group span{display:block;color:var(--muted);font-size:13px;line-height:1.55;margin-top:2px}
.search-panel{position:fixed;z-index:101;left:0;right:0;top:82px;visibility:hidden;opacity:0;pointer-events:none;transition:.18s ease}.search-panel.is-open{visibility:visible;opacity:1;pointer-events:auto}.search-card{width:min(760px,calc(100% - 32px));margin:0 auto;background:var(--ink);border:1px solid var(--line-strong);border-radius:0 0 14px 14px;padding:18px;box-shadow:var(--shadow)}.search-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:12px}.search-head strong{font-size:18px;color:var(--title)}.search-card label{display:block;color:var(--muted);margin-bottom:8px}.search-card input{width:100%;height:44px;border:1px solid var(--line-strong);border-radius:10px;background:#0B0B0B;color:var(--bright);padding:0 14px}.search-presets{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.search-presets a{min-height:40px;display:flex;align-items:center;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:#111;color:var(--silver)}.search-note{font-size:12px;color:var(--soft);margin:12px 0 0}
.mobile-bottom{display:none}
.small-note{font-size:13px;color:var(--muted)}
.stack-gap{margin-top:16px}
.table-like{display:grid;border:1px solid var(--line);border-radius:12px;overflow:hidden}.table-row{display:grid;grid-template-columns:160px 1fr;gap:18px;padding:14px 16px;background:#121212;border-bottom:1px solid var(--line)}.table-row:last-child{border-bottom:0}.table-row strong{color:var(--title)}
@media (max-width:860px){
    body{padding-top:82px;padding-bottom:60px}.case-tabs{display:none}.site-main{padding-top:22px}.grid-4,.shelf{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:1fr}.app-panel{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.search-panel{top:0;bottom:0;background:#080808}.search-card{width:100%;height:100%;border:0;border-radius:0;margin:0;padding:20px 16px;overflow:auto}.mobile-bottom{display:grid;position:fixed;z-index:75;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);grid-template-columns:repeat(5,1fr);background:#0A0A0A;border-top:1px solid var(--line-strong)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--muted)}.mobile-bottom a.is-current{background:var(--bright);color:var(--bg)}.site-footer{padding-bottom:82px}.banner-slot{height:220px}.section{padding:18px}.material-inner{gap:8px}.brand-lockup{min-width:72px}.brand-lockup img{max-width:120px}.drawer-open{min-width:72px}.app-link{min-width:72px;padding:0 10px}.table-row{grid-template-columns:1fr;gap:4px}
}
@media (max-width:620px){
    .bar-inner,.page-wrap,.footer-inner{width:calc(100% - 32px)}.grid-2,.grid-4,.shelf{grid-template-columns:1fr}.feature-slot{height:170px}.wide-slot,.article-slot{height:190px}.app-slot{height:300px}.section-head{display:block}.section-head p{margin-top:6px}.footer-grid{grid-template-columns:1fr 1fr}.shelf-item{min-height:150px}.hero-copy{padding-top:14px}
}