:root{--bg:#0D0D0D;--deep:#070707;--panel:#171717;--panel2:#222222;--title:#F2F2F2;--text:#C8C8C8;--muted:#9A9A9A;--subtle:#6E6E6E;--silver:#C8C8C8;--bright:#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);--max:1120px;--radius:12px;--top-desktop:122px;--top-mobile:82px}*{box-sizing:border-box}html{background:var(--bg);scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.7 Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.site-shell{width:min(calc(100% - 32px),var(--max));margin:0 auto}.skip-link{position:fixed;left:16px;top:-100px;z-index:200;background:var(--bright);color:var(--bg);padding:10px 14px;border-radius:8px}.skip-link:focus{top:10px}.site-header{position:fixed;inset:0 0 auto 0;z-index:80;box-shadow:0 8px 24px rgba(0,0,0,.22)}.ink-line{height:22px;background:#090909;color:var(--silver);font-size:12px;border-bottom:1px solid rgba(232,232,232,.08)}.ink-line__inner,.material-bar__inner,.case-tabs__inner{height:100%;display:flex;align-items:center;justify-content:space-between}.text-button{border:0;background:transparent;color:var(--silver);min-height:22px;padding:0 4px}.material-bar{height:60px;background:var(--ink);border-bottom:1px solid var(--line)}.material-bar__inner{display:grid;grid-template-columns:1fr auto 1fr;gap:16px}.brand-mark{justify-self:start;display:inline-flex;align-items:center;min-height:44px;color:var(--bright);font-size:16px;font-weight:700;letter-spacing:.08em}.brand-mark img,.drawer__brand img,.footer-brandline img{height:28px;width:auto;max-width:180px;object-fit:contain}.drawer-trigger{justify-self:center;min-width:92px;height:44px;border:1px solid var(--line-strong);border-radius:999px;background:#121212;color:var(--bright);font-size:14px}.app-link{justify-self:end;min-height:44px;display:inline-flex;align-items:center;padding:0 18px;border-radius:999px;background:linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%);color:#0D0D0D;font-weight:700;white-space:nowrap}.case-tabs{height:40px;background:#101010;border-bottom:1px solid var(--line)}.case-tabs__inner{justify-content:center;gap:8px}.case-tabs a{height:30px;min-width:92px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;color:var(--silver);font-size:13px}.case-tabs a.is-active{background:var(--bright);color:var(--bg)}.site-main{padding-top:var(--top-desktop);min-height:70vh}.hero,.page-hero{padding:40px 0 22px}.eyebrow{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}h1,h2,h3{margin:0;color:var(--title);line-height:1.3}h1{font-size:24px;margin-top:6px}h2{font-size:20px}h3{font-size:16px}p{margin:0 0 1em}.lead{font-size:16px;max-width:780px;color:#D4D4D4}.media-slot{width:100%;height:200px;background:var(--ink);border:1px solid var(--line);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.media-slot--banner{height:260px}.media-slot--banner img{loading:eager}.media-slot--small{height:180px}.media-slot--app{height:min(360px,62vw)}.section{padding:22px 0}.section+.section{border-top:1px solid rgba(232,232,232,.05)}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:16px}.section-head p{margin:0;color:var(--muted);max-width:620px}.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{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}.card .media-slot{margin-bottom:14px}.card p:last-child{margin-bottom:0}.card-link{display:inline-flex;align-items:center;min-height:44px;margin-top:10px;color:var(--bright);font-weight:700}.hero-copy{padding:22px 0 6px}.hero-copy p{max-width:820px}.action-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.btn{height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 20px;border-radius:10px;font-size:14px;font-weight:700;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%);color:#0D0D0D}.btn-secondary{background:#101010;border:1px solid var(--line-strong);color:var(--bright)}a:hover,.text-button:hover,button:hover{filter:brightness(1.12)}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--bright);outline-offset:3px}.number-list{display:grid;gap:12px}.number-row{display:grid;grid-template-columns:60px 1fr;gap:14px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px}.number-row__num{font-size:24px;color:var(--bright);font-weight:700;letter-spacing:.08em}.shelf{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.shelf-item{min-height:152px;background:linear-gradient(180deg,#1C1C1C,#121212);border:1px solid var(--line);border-radius:12px;padding:16px;display:flex;flex-direction:column;justify-content:space-between}.shelf-item span{color:var(--muted);font-size:13px}.timeline{position:relative;padding-left:26px}.timeline:before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:1px;background:var(--line-strong)}.timeline-item{position:relative;margin-bottom:18px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px}.timeline-item:before{content:"";position:absolute;left:-24px;top:22px;width:9px;height:9px;border-radius:50%;background:var(--bright);box-shadow:0 0 0 4px var(--bg)}.status{display:inline-flex;align-items:center;min-height:28px;padding:0 10px;border-radius:999px;background:#E1E1E1;color:#111;font-size:12px;font-weight:700}.memo-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.memo{background:#111;border-left:3px solid var(--silver);padding:18px;border-radius:0 12px 12px 0}.article{max-width:880px}.article h2{margin:28px 0 12px}.article h3{margin:20px 0 8px}.article p,.article li{color:var(--text)}.article ul{padding-left:20px}.article .note{padding:16px 18px;border:1px solid var(--line-strong);border-radius:12px;background:#121212}.article .soft{color:var(--muted)}.quote-strip{padding:18px;border-radius:12px;background:linear-gradient(135deg,#E8E8E8,#BEBEBE);color:#0D0D0D}.quote-strip strong{display:block;font-size:18px;margin-bottom:6px}.article-index{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:18px 0}.article-index a{min-height:44px;display:flex;align-items:center;padding:10px 12px;background:var(--panel2);border:1px solid var(--line);border-radius:10px}.faq-list{display:grid;gap:12px}.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px}.faq-item h2,.faq-item h3{margin-bottom:8px}.definition-list{display:grid;gap:12px}.definition-row{display:grid;grid-template-columns:180px 1fr;gap:16px;padding:16px;border-bottom:1px solid var(--line)}.definition-row dt{color:var(--bright);font-weight:700}.definition-row dd{margin:0}.site-footer{margin-top:40px;background:var(--deep);border-top:1px solid var(--line);padding:30px 0 calc(72px + env(safe-area-inset-bottom));font-size:13px}.footer-grid{display:grid;grid-template-columns:1.15fr 1.85fr;gap:32px}.footer-brandline{display:flex;align-items:center;gap:12px;margin-bottom:14px}.footer-brandline div{display:grid}.footer-brandline span{color:var(--muted);font-size:11px;letter-spacing:.12em}.footer-brand p{color:var(--muted);max-width:560px}.footer-links{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.footer-links div{display:grid;align-content:start;gap:5px}.footer-links strong{color:var(--bright);margin-bottom:5px}.footer-links a{color:var(--muted);min-height:30px}.footer-bottom{border-top:1px solid var(--line);margin-top:22px;padding-top:14px;color:var(--subtle)}.drawer{position:fixed;inset:0;z-index:120;visibility:hidden;pointer-events:none}.drawer.is-open{visibility:visible;pointer-events:auto}.drawer__panel{position:absolute;left:0;top:0;bottom:0;width:min(400px,86vw);background:#0A0A0A;border-right:1px solid var(--line-strong);box-shadow:var(--shadow);transform:translateX(-100%);transition:transform .25s ease;overflow-y:auto;overscroll-behavior:contain}.drawer.is-open .drawer__panel{transform:translateX(0)}.drawer__head{position:sticky;top:0;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;background:#0A0A0A;border-bottom:1px solid var(--line)}.drawer__brand{display:flex;align-items:center;gap:10px}.drawer__brand div{display:grid}.drawer__brand span{font-size:10px;color:var(--muted);letter-spacing:.12em}.drawer-close,.search-card button{min-height:44px;border:1px solid var(--line-strong);background:#101010;color:var(--bright);border-radius:9px;padding:0 14px}.drawer__groups{padding:8px 16px 28px}.drawer__groups section{padding:12px 0}.drawer__groups h2{font-size:13px;color:var(--muted);margin-bottom:6px}.drawer__groups a{display:grid;gap:2px;padding:10px 8px;border-radius:9px}.drawer__groups a:hover{background:var(--panel)}.drawer__groups a span{font-size:12px;color:var(--muted);line-height:1.55}.page-mask{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,.72);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s ease}.page-mask.is-visible{opacity:1;visibility:visible;pointer-events:auto}.ui-locked{overflow:hidden}.search-layer{position:fixed;z-index:130;left:0;right:0;top:82px;visibility:hidden;pointer-events:none}.search-layer.is-open{visibility:visible;pointer-events:auto}.search-card{width:min(calc(100% - 32px),920px);margin:0 auto;background:#101010;border:1px solid var(--line-strong);border-radius:0 0 14px 14px;box-shadow:var(--shadow);padding:18px}.search-card__head{display:flex;align-items:center;justify-content:space-between;gap:16px}.search-card__head div{display:grid}.search-card__head span{font-size:12px;color:var(--muted)}.search-box{display:block;margin:16px 0}.search-box input{width:100%;height:46px;border:1px solid var(--line-strong);background:#080808;color:var(--bright);border-radius:10px;padding:0 14px}.search-presets{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.search-presets a{display:grid;min-height:68px;align-content:center;padding:10px 12px;background:var(--panel);border:1px solid var(--line);border-radius:10px}.search-presets a span{font-size:12px;color:var(--muted)}.search-presets a[hidden]{display:none}.mobile-bottom{display:none}.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.app-icon-box{width:48px;height:48px;margin:0 0 12px;background:var(--ink);border:1px solid var(--line);border-radius:12px;display:flex;align-items:center;justify-content:center}.app-icon-box img{width:48px;height:48px;object-fit:contain} .accent-line{border-left:3px solid var(--red);padding-left:14px}.policy-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.policy-card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px}.policy-card h2,.policy-card h3{margin-bottom:8px}.page-hero__grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(260px,.8fr);gap:22px;align-items:end}.brand-rail{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.brand-rail a{min-height:68px;padding:12px;border:1px solid var(--line);border-radius:10px;background:var(--panel);display:grid;align-content:center}.brand-rail a span{color:var(--muted);font-size:12px}
@media (max-width:900px){.grid-3{grid-template-columns:1fr}.grid-2,.memo-grid,.policy-grid{grid-template-columns:1fr}.shelf{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:1fr}.page-hero__grid{grid-template-columns:1fr}.brand-rail{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:720px){:root{--top-desktop:var(--top-mobile)}body{padding-bottom:calc(48px + env(safe-area-inset-bottom))}.case-tabs{display:none}.site-main{padding-top:var(--top-mobile)}.material-bar__inner{grid-template-columns:auto 1fr auto;gap:10px}.brand-mark{font-size:15px}.brand-mark img{max-width:118px}.drawer-trigger{min-width:74px;padding:0 14px}.app-link{padding:0 12px}.hero,.page-hero{padding-top:26px}.site-shell{width:min(calc(100% - 32px),var(--max))}.media-slot--banner{height:260px}.search-layer{top:0;bottom:0;background:#090909}.search-card{width:100%;height:100%;border:0;border-radius:0;margin:0;overflow:auto;padding:18px 16px calc(70px + env(safe-area-inset-bottom))}.search-presets{grid-template-columns:1fr}.mobile-bottom{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);display:grid;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;min-width:0;font-size:12px;color:var(--silver)}.mobile-bottom a.is-active{background:var(--bright);color:var(--bg)}.footer-links{grid-template-columns:repeat(2,minmax(0,1fr))}.definition-row{grid-template-columns:1fr}.article-index{grid-template-columns:1fr 1fr}.section-head{align-items:flex-start;flex-direction:column}.number-row{grid-template-columns:48px 1fr}.number-row__num{font-size:20px}.site-footer{padding-bottom:calc(70px + env(safe-area-inset-bottom))}}
@media (max-width:430px){.material-bar__inner{gap:6px}.brand-mark img{max-width:92px}.drawer-trigger{min-width:68px}.app-link{padding:0 10px}.shelf,.brand-rail,.article-index{grid-template-columns:1fr}.footer-links{grid-template-columns:1fr 1fr}.action-row .btn{flex:1 1 140px}.media-slot--banner{height:220px}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}