*{box-sizing:border-box}
:root{--bg:#0D0D0D;--deep:#070707;--panel:#171717;--sub:#222222;--title:#F2F2F2;--text:#C8C8C8;--muted:#9A9A9A;--soft:#6E6E6E;--silver:#C8C8C8;--silver2:#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}
html{scroll-behavior:smooth;background:var(--bg)}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}body.panel-open{overflow:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input{font:inherit}button{color:inherit}.wrap{width:min(1120px,calc(100% - 32px));margin:0 auto}.skip-link{position:fixed;left:16px;top:-60px;z-index:200;background:var(--silver2);color:var(--bg);padding:10px 14px;border-radius:8px}.skip-link:focus{top:10px}
.ink-line{position:fixed;inset:0 0 auto 0;height:22px;background:var(--deep);z-index:80;border-bottom:1px solid var(--border);font-size:12px}.ink-line-inner{height:22px;display:flex;align-items:center;justify-content:space-between;gap:16px}.text-button,.drawer-button,.close-button{border:0;background:transparent;cursor:pointer}.text-button{min-height:22px;padding:0 6px;color:var(--silver2)}
.material-bar{position:fixed;inset:22px 0 auto 0;height:60px;background:var(--ink);z-index:79;border-bottom:1px solid var(--border)}.material-bar-inner{height:60px;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;min-width:90px;gap:8px}.brand-fallback{font-size:16px;font-weight:700;color:var(--silver2)}.logo-slot:has(img)+.brand-fallback{display:none}.logo-slot-small{height:28px;min-width:28px;display:flex;align-items:center}.brand-logo{height:28px;width:auto;object-fit:contain;object-position:center}.drawer-button{justify-self:center;min-width:88px;height:40px;border:1px solid var(--border-strong);border-radius:10px;color:var(--silver2);background:var(--deep)}.app-link{justify-self:end;display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 15px;border-radius:10px;border:1px solid var(--border-strong);color:var(--silver2);background:var(--deep);white-space:nowrap}
.case-tabs{position:fixed;inset:82px 0 auto 0;height:40px;background:var(--deep);z-index:78;border-bottom:1px solid var(--border)}.case-tabs-inner{height:40px;display:flex;align-items:center;justify-content:center;gap:10px}.case-tabs a{min-width:74px;height:30px;display:flex;align-items:center;justify-content:center;border-radius:8px;color:var(--text);font-size:13px}.case-tabs a.is-active{background:var(--silver2);color:var(--bg);font-weight:700}.site-main{padding-top:122px;min-height:70vh;padding-bottom:36px}
.page-hero{padding:36px 0 22px}.page-hero .eyebrow,.section-kicker{color:var(--muted);font-size:12px;letter-spacing:.14em;text-transform:uppercase}h1,h2,h3{color:var(--title);margin:0 0 12px;line-height:1.35}h1{font-size:24px}h2{font-size:20px}h3{font-size:16px}p{margin:0 0 14px}.lead{font-size:16px;color:var(--silver2);max-width:820px}.muted{color:var(--muted)}.soft{color:var(--soft)}.section{padding:24px 0}.section+.section{border-top:1px solid var(--border)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.card-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.card,.panel,.shelf-item,.note-card,.faq-item,.timeline-item{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.card{padding:18px}.card p:last-child{margin-bottom:0}.number{font-size:12px;color:var(--silver2);letter-spacing:.14em;margin-bottom:10px}
.image-slot{background:var(--ink);border:1px solid var(--border);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;overflow:hidden}.image-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.image-slot.banner{height:260px}.image-slot.medium{height:200px}.image-slot.tile{height:180px}.image-slot.app{height:min(360px,62vw)}.hero-copy{padding:22px 0 0;max-width:880px}.hero-actions,.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.button{min-height:40px;padding:0 18px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;white-space:nowrap;border:1px solid transparent}.button.primary{background:linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%);color:#0D0D0D;font-weight:700}.button.secondary{background:var(--deep);color:var(--silver2);border-color:var(--border-strong)}.button:hover,a.card:hover,.shelf-item:hover{border-color:var(--border-strong)}a:focus-visible,button:focus-visible{outline:2px solid var(--silver2);outline-offset:3px}
.feature-card{display:flex;flex-direction:column;gap:14px}.feature-card .image-slot{width:100%}.feature-card .card-body{padding:0 2px 2px}.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.72fr);gap:22px;align-items:start}.split.reverse{grid-template-columns:minmax(260px,.72fr) minmax(0,1fr)}.indexed-list{display:grid;gap:10px}.indexed-list article{display:grid;grid-template-columns:54px 1fr;gap:16px;padding:16px 0;border-bottom:1px solid var(--border)}.indexed-list article:last-child{border-bottom:0}.indexed-list .big-index{font-size:24px;color:var(--silver2);font-weight:700;line-height:1}.shelf{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.shelf-item{padding:16px;display:block}.shelf-item strong{display:block;color:var(--title);margin-bottom:6px}
.timeline{position:relative;padding-left:22px}.timeline::before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;background:var(--border-strong)}.timeline-item{position:relative;padding:16px;margin-bottom:14px}.timeline-item::before{content:"";position:absolute;left:-22px;top:20px;width:9px;height:9px;border-radius:50%;background:var(--silver2);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:var(--sub);color:var(--silver2);font-size:12px}.note-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.note-card{padding:18px}.note-card h3{display:flex;align-items:center;gap:8px}.note-card h3::before{content:"";width:18px;height:1px;background:var(--red)}
.rule-list{counter-reset:rule;display:grid;gap:12px}.rule-list article{padding:18px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius)}.rule-list article h2::before{counter-increment:rule;content:counter(rule,decimal-leading-zero) " ";color:var(--silver2);margin-right:6px}.faq-list{display:grid;gap:12px}.faq-item{padding:18px}.faq-item h2{font-size:16px}.brand-statement{padding:22px;background:linear-gradient(180deg,var(--panel),var(--deep));border:1px solid var(--border);border-radius:14px}.icon-line{display:flex;gap:14px;align-items:center}.icon-slot{width:48px;height:48px;border-radius:12px;background:var(--ink);display:flex;align-items:center;justify-content:center;overflow:hidden;border:1px solid var(--border)}.icon-slot img{width:48px;height:48px;object-fit:contain}
.site-footer{background:var(--deep);border-top:1px solid var(--border);padding:28px 0 72px;font-size:13px}.footer-brand{padding-bottom:18px;border-bottom:1px solid var(--border)}.footer-logo-link{display:inline-flex;align-items:center;gap:10px}.footer-logo-link span:last-child{display:grid}.footer-logo-link strong{color:var(--title);font-size:16px}.footer-logo-link small{color:var(--muted);font-size:11px;letter-spacing:.12em}.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;padding:22px 0}.footer-grid h2{font-size:13px;color:var(--title);margin-bottom:8px}.footer-grid a{display:block;color:var(--text);padding:4px 0}.footer-note{border-top:1px solid var(--border);padding-top:18px;color:var(--muted)}.footer-note p:last-child{margin-bottom:0}
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.68);z-index:89;opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease}.overlay.is-visible{opacity:1;visibility:visible;pointer-events:auto}.drawer-panel{position:fixed;z-index:92;top:0;bottom:0;left:0;width:min(400px,86vw);background:var(--deep);border-right:1px solid var(--border-strong);box-shadow:var(--shadow);transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:.24s ease}body.drawer-open .drawer-panel{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{height:68px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid var(--border)}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-brand>span:last-child{display:grid}.drawer-brand small{font-size:10px;color:var(--muted);letter-spacing:.12em}.close-button{min-width:58px;min-height:40px;border:1px solid var(--border-strong);border-radius:10px;background:var(--ink);color:var(--silver2)}.drawer-scroll{height:calc(100% - 68px);overflow-y:auto;padding:14px}.drawer-group{padding:8px 0 16px}.drawer-group h2{font-size:12px;color:var(--muted);letter-spacing:.12em;margin:0 0 8px}.drawer-group a{display:block;padding:11px 12px;border-radius:10px;border:1px solid transparent}.drawer-group a:hover{background:var(--panel);border-color:var(--border)}.drawer-group strong{display:block;color:var(--title);font-size:14px}.drawer-group span{display:block;color:var(--muted);font-size:12px;margin-top:2px}
.search-panel{position:fixed;z-index:91;top:82px;left:0;right:0;visibility:hidden;pointer-events:none;transform:translateY(-12px);opacity:0;transition:.2s ease}body.search-open .search-panel{visibility:visible;pointer-events:auto;transform:translateY(0);opacity:1}.search-card{width:min(760px,calc(100% - 32px));margin:14px auto;background:var(--ink);border:1px solid var(--border-strong);border-radius:14px;box-shadow:var(--shadow);padding:18px}.search-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.search-head small{color:var(--muted)}.search-head h2{margin-top:4px}.search-presets{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.search-presets a{min-height:40px;padding:0 16px;display:inline-flex;align-items:center;border:1px solid var(--border);border-radius:10px;background:var(--deep)}.mobile-bottom{display:none}
@media(max-width:820px){.case-tabs{display:none}.site-main{padding-top:82px;padding-bottom:70px}.material-bar-inner{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:8px}.brand-link{min-width:0}.app-link{padding:0 10px}.card-grid,.card-grid.two,.note-grid,.shelf,.split,.split.reverse,.footer-grid{grid-template-columns:1fr}.image-slot.banner{height:220px}.image-slot.medium{height:190px}.image-slot.tile{height:180px}.search-panel{top:0;bottom:0;background:var(--deep);overflow:auto}.search-card{margin:0;width:100%;min-height:100%;border:0;border-radius:0;padding:24px 16px}.mobile-bottom{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;z-index:77;left:0;right:0;bottom:0;min-height:48px;padding-bottom:env(safe-area-inset-bottom);background:var(--deep);border-top:1px solid var(--border)}.mobile-bottom a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:12px}.mobile-bottom a.is-active{background:var(--silver2);color:var(--bg);font-weight:700}.site-footer{padding-bottom:calc(70px + env(safe-area-inset-bottom))}.indexed-list article{grid-template-columns:44px 1fr}}
@media(max-width:420px){.brand-fallback{font-size:15px}.drawer-button{min-width:72px}.app-link{font-size:13px}.image-slot.banner{height:190px}}