:root{
  --bg:#0D0D0D;--deep:#070707;--panel:#171717;--panel2:#222222;--text:#C8C8C8;--title:#F2F2F2;--muted:#9A9A9A;--faint:#6E6E6E;--silver:#C8C8C8;--bright:#E8E8E8;--ink:#1A1A1A;--red:#B85A5A;--border:rgba(232,232,232,.12);--border-strong:rgba(232,232,232,.36);--shadow:0 12px 28px rgba(0,0,0,.45);--radius:12px;--top:122px
}
*{box-sizing:border-box}html{background:var(--deep);scroll-behavior:smooth;overflow-x:hidden}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}body.no-scroll{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{display:block;max-width:100%}.shell{width:min(1120px,calc(100% - 32px));margin:0 auto}.site-header{position:fixed;z-index:80;top:0;left:0;right:0;box-shadow:0 8px 24px rgba(0,0,0,.24)}.ink-line{height:22px;background:var(--deep);border-bottom:1px solid var(--border)}.ink-inner{height:22px;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--silver)}.text-button{border:0;background:transparent;color:var(--bright);padding:0 8px;height:22px}.material-bar{height:60px;background:var(--ink);border-bottom:1px solid var(--border-strong)}.material-inner{height:60px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:14px}.brand-link{justify-self:start;min-height:44px;display:flex;align-items:center}.brand-link img{height:28px;width:auto;object-fit:contain}.brand-fallback{font-size:16px;color:var(--bright);font-weight:700;letter-spacing:.08em}.drawer-trigger,.app-link,.button{min-height:40px;border-radius:10px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;white-space:nowrap;font-size:14px}.drawer-trigger{justify-self:center;border:1px solid var(--border-strong);background:#111;color:var(--bright)}.app-link{justify-self:end;background:linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%);color:#0D0D0D;font-weight:700}.case-tabs{height:40px;background:#101010;border-bottom:1px solid var(--border)}.case-tabs-inner{height:40px;display:flex;align-items:center;justify-content:center;gap:8px}.case-tabs a{height:32px;min-width:94px;padding:0 16px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--silver)}.case-tabs a:hover,.case-tabs a:focus-visible,.case-tabs a.is-current{background:var(--bright);color:var(--bg)}.site-main{padding-top:calc(var(--top) + 28px);padding-bottom:92px;min-height:72vh}.hero,.page-hero{padding:26px 0 18px}.page-kicker{color:var(--red);font-size:13px;letter-spacing:.12em;text-transform:uppercase}.hero h1,.page-hero h1{font-size:24px;line-height:1.3;color:var(--title);margin:10px 0 12px}.hero p,.page-hero p{max-width:820px;margin:0;color:var(--text)}.lead{font-size:16px;color:var(--bright)}.media-slot{background:var(--ink);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:flex;align-items:center;justify-content:center;min-height:160px}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.media-slot.banner{height:260px}.media-slot.card-image{height:180px}.media-slot.feature-image{height:200px}.media-slot.app-image{height:360px;max-width:420px}.media-slot.compact{height:210px}.section{padding:24px 0}.section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:16px}.section-title h2{margin:0;font-size:20px;color:var(--title)}.section-title p{margin:0;color:var(--muted);font-size:13px}.grid{display:grid;gap:16px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}.card h2,.card h3{color:var(--title);margin-top:0}.card h3{font-size:16px;margin-bottom:8px}.card p{margin:0;color:var(--text)}.card .media-slot{margin:-18px -18px 16px;border-radius:var(--radius) var(--radius) 0 0;border-width:0 0 1px}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.button.primary{background:linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%);color:#0D0D0D;font-weight:700}.button.secondary{background:#111;border:1px solid var(--border-strong);color:var(--bright)}.button:hover,.app-link:hover,.drawer-trigger:hover,.button:focus-visible,.app-link:focus-visible,.drawer-trigger:focus-visible,.text-button:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--bright);outline-offset:2px}.number-row{display:grid;grid-template-columns:72px 1fr;gap:18px;padding:18px 0;border-top:1px solid var(--border)}.number-row:first-child{border-top:0}.big-number{font-size:34px;line-height:1;color:var(--bright);font-weight:700;letter-spacing:.04em}.number-row h3{margin:0 0 6px;color:var(--title);font-size:16px}.number-row p{margin:0}.shelf{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.shelf-item{min-height:152px;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px;display:flex;flex-direction:column;justify-content:space-between}.shelf-item small{color:var(--red)}.shelf-item strong{color:var(--title);font-size:16px}.shelf-item p{margin:8px 0 0;color:var(--muted);font-size:14px}.timeline{position:relative;margin-left:10px;padding-left:26px;border-left:1px solid var(--border-strong)}.timeline-item{position:relative;padding:0 0 24px}.timeline-item:before{content:"";position:absolute;left:-32px;top:7px;width:11px;height:11px;border-radius:50%;background:var(--bright);box-shadow:0 0 0 5px rgba(232,232,232,.08)}.timeline-item h3{margin:0 0 6px;color:var(--title)}.status{display:inline-flex;margin-top:8px;border:1px solid var(--border-strong);border-radius:999px;padding:2px 9px;color:var(--bright);font-size:12px}.memo-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.memo{padding:18px;background:var(--panel);border-left:3px solid var(--silver);border-radius:0 12px 12px 0}.memo h3{margin:0 0 8px;color:var(--title)}.article{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}.article h2{font-size:20px;color:var(--title);margin:26px 0 8px}.article h2:first-child{margin-top:0}.article h3{font-size:16px;color:var(--title);margin:20px 0 6px}.article p{margin:0 0 14px}.article ul{padding-left:20px}.article li{margin:6px 0}.quote{border-left:3px solid var(--red);padding:10px 14px;background:#121212;color:var(--bright);border-radius:0 8px 8px 0}.faq-list{display:grid;gap:12px}.faq-item{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:18px}.faq-item h2,.faq-item h3{margin:0 0 8px;color:var(--title);font-size:16px}.faq-item p{margin:0}.notice{background:linear-gradient(180deg,#181818,#111);border:1px solid var(--border-strong);border-radius:12px;padding:18px}.notice strong{color:var(--bright)}.split{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);gap:22px;align-items:start}.toc{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px}.toc h2{font-size:16px;margin:0 0 10px;color:var(--title)}.toc a{display:block;padding:9px 10px;border-top:1px solid var(--border);color:var(--text)}.toc a:first-of-type{border-top:0}.toc a:hover{background:var(--panel2);color:var(--bright)}.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.66);z-index:110;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.material-drawer{position:fixed;z-index:120;top:0;bottom:0;left:0;width:min(400px,86vw);background:var(--deep);border-right:1px solid var(--border-strong);transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s}.drawer-open .drawer-mask,.search-open .drawer-mask{opacity:1;visibility:visible;pointer-events:auto}.drawer-open .material-drawer{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid var(--border)}.drawer-brand{display:flex;align-items:center;gap:10px;color:var(--title)}.drawer-brand img{height:28px;width:auto;object-fit:contain}.close-button{min-height:40px;padding:0 14px;border-radius:9px;border:1px solid var(--border-strong);background:#101010;color:var(--bright)}.drawer-scroll{height:calc(100% - 72px);overflow:auto;padding:14px 16px 34px}.drawer-group{padding:8px 0}.drawer-group h2{font-size:13px;color:var(--red);margin:0 0 6px}.drawer-group a{display:block;padding:10px 8px;border-top:1px solid var(--border)}.drawer-group a b{display:block;color:var(--title);font-size:15px}.drawer-group a span{display:block;color:var(--muted);font-size:13px;margin-top:2px}.search-layer{position:fixed;z-index:125;left:0;right:0;top:82px;visibility:hidden;pointer-events:none;transform:translateY(-12px);opacity:0;transition:.2s}.search-open .search-layer{visibility:visible;pointer-events:auto;transform:translateY(0);opacity:1}.search-card{width:min(760px,calc(100% - 32px));margin:0 auto;background:var(--ink);border:1px solid var(--border-strong);box-shadow:var(--shadow);border-radius:0 0 14px 14px;padding:18px}.search-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;color:var(--title)}.search-card label{display:block;margin-bottom:6px;color:var(--silver)}.search-card input{width:100%;height:44px;border-radius:10px;border:1px solid var(--border-strong);background:#0b0b0b;color:var(--bright);padding:0 12px}.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.search-presets a{min-height:40px;padding:0 14px;display:flex;align-items:center;border-radius:9px;background:var(--panel2);border:1px solid var(--border);color:var(--bright)}.search-note{margin:12px 0 0;font-size:13px;color:var(--muted)}.site-footer{background:var(--deep);border-top:1px solid var(--border-strong);padding:34px 0 24px;color:var(--silver);font-size:13px}.footer-grid{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:24px}.footer-logo-row{display:flex;gap:12px;align-items:center}.footer-logo-row img{height:28px;width:auto;object-fit:contain}.footer-logo-row div{display:flex;flex-direction:column;line-height:1.25}.footer-logo-row strong{color:var(--bright)}.footer-logo-row span{font-size:11px;color:var(--muted)}.footer-brand p{max-width:420px;color:var(--muted)}.footer-col h2{font-size:13px;color:var(--bright);margin:0 0 8px}.footer-col a{display:block;padding:4px 0;color:var(--silver)}.footer-bottom{border-top:1px solid var(--border);padding-top:18px;margin-top:24px;color:var(--muted)}.mobile-bottom{display:none}
@media (max-width:860px){:root{--top:82px}.case-tabs{display:none}.site-main{padding-top:calc(var(--top) + 20px);padding-bottom:92px}.grid-3,.grid-2,.split{grid-template-columns:1fr}.shelf{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(2,1fr)}.footer-brand{grid-column:1/-1}.media-slot.banner{height:220px}.material-inner{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr)}.brand-link img{max-width:118px}.drawer-trigger,.app-link{padding:0 12px}.mobile-bottom{display:grid;position:fixed;z-index:70;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(--border-strong)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--silver);min-height:48px}.mobile-bottom a.is-current{background:var(--bright);color:var(--bg)}.drawer-mask{z-index:110}.material-drawer{z-index:120}.search-layer{z-index:125;inset:0;top:0;background:var(--deep);transform:none}.search-open .search-layer{transform:none}.search-card{width:100%;height:100%;border:0;border-radius:0;padding:18px 16px;padding-top:max(18px,env(safe-area-inset-top));overflow:auto}.memo-grid{grid-template-columns:1fr}}
@media (max-width:560px){.shell{width:calc(100% - 32px)}.hero,.page-hero{padding-top:18px}.hero h1,.page-hero h1{font-size:24px}.section{padding:18px 0}.card,.article{padding:16px}.card .media-slot{margin:-16px -16px 14px}.media-slot.banner{height:190px}.media-slot.card-image{height:168px}.media-slot.feature-image{height:190px}.media-slot.app-image{height:320px}.shelf{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.number-row{grid-template-columns:54px 1fr}.big-number{font-size:28px}.material-inner{gap:8px}.brand-link img{max-width:98px}.brand-fallback{font-size:15px}.app-link,.drawer-trigger{font-size:13px;min-height:44px}.ink-inner{font-size:11px}}