:root{
  --bg:#0F0E0A;--deep:#080706;--panel:#1A1810;--panel2:#242010;--title:#F5E6A8;--text:#E8DCB0;--muted:#B8A46A;--soft:#8A7A48;--brand:#E8B923;--bright:#F3D056;--darkgold:#A88212;--cream:#FFF6D8;--line:rgba(232,185,35,.18);--line2:rgba(232,185,35,.46);--shadow:0 12px 28px rgba(0,0,0,.40);--radius:12px;--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}
a{color:inherit;text-decoration:none}
a,button{font:inherit}
button{border:0;cursor:pointer}
img{display:block;max-width:100%;height:auto}
.skip-link{position:fixed;left:12px;top:-80px;z-index:200;background:var(--bright);color:var(--bg);padding:8px 12px;border-radius:8px}.skip-link:focus{top:8px}
.shell{width:min(calc(100% - 32px),var(--max));margin:0 auto}
.site-header{position:fixed;inset:0 0 auto 0;z-index:100}
.topline{height:22px;background:var(--deep);border-bottom:1px solid var(--line)}
.topline-inner{height:22px;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted)}
.topline-search{height:22px;min-width:52px;padding:0 8px;background:transparent;color:var(--title);border-left:1px solid var(--line)}
.racebar{height:60px;background:rgba(15,14,10,.98);border-bottom:1px solid var(--line2)}
.racebar-inner{height:60px;display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:center}
.brand-link{justify-self:start;min-height:44px;display:flex;align-items:center;min-width:130px}
.logo-slot{display:flex;align-items:center;min-height:28px}.brand-logo{height:28px;width:auto;object-fit:contain;object-position:center}.brand-fallback{font-size:16px;font-weight:700;color:var(--title);white-space:nowrap}
.drawer-trigger{justify-self:center;min-width:88px;height:42px;border-radius:10px;background:linear-gradient(135deg,var(--bright) 0%,var(--brand) 55%,var(--darkgold) 100%);color:var(--bg);font-weight:700}
.app-link{justify-self:end;min-width:88px;height:42px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line2);border-radius:10px;color:var(--title);background:var(--deep)}
.daytabs{height:40px;background:var(--deep);border-bottom:1px solid var(--line)}
.daytabs-inner{height:40px;display:flex;justify-content:center;align-items:center;gap:8px}
.daytab{height:30px;min-width:92px;display:flex;align-items:center;justify-content:center;border-radius:8px;color:var(--muted);font-size:13px}.daytab.is-current{background:var(--brand);color:var(--bg);font-weight:700}
.site-main{padding-top:142px;min-height:60vh;padding-bottom:48px}
.page-wrap{padding:28px 0 8px}
.page-head{margin-bottom:22px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:12px;letter-spacing:.08em;text-transform:uppercase}.eyebrow:before{content:"";width:24px;height:1px;background:var(--brand)}
h1{font-size:24px;line-height:1.3;color:var(--title);margin:8px 0 10px}h2{font-size:20px;line-height:1.4;color:var(--title);margin:0 0 10px}h3{font-size:16px;line-height:1.45;color:var(--title);margin:0 0 8px}p{margin:0 0 13px}.lead{font-size:16px;color:var(--cream);max-width:860px}.muted{color:var(--muted)}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.section{margin:20px 0}.section-pad{padding:20px}.section-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.section-title small{color:var(--soft);font-size:12px}
.hero-banner-slot,.media-slot{background:var(--deep);border:1px solid var(--line);border-radius:14px;display:flex;align-items:center;justify-content:center;overflow:hidden}.hero-banner-slot{height:260px}.media-slot{height:180px}.media-slot.tall{height:200px}.media-slot.app-vertical{height:min(360px,72vw)}
.hero-banner-slot img,.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.hero-copy{padding:20px 0}.hero-kicker{font-size:12px;color:var(--brand);font-weight:700}.hero-copy h1{margin-top:6px}.hero-copy .tagline{font-size:20px;color:var(--cream);font-weight:700;margin-bottom:10px}.hero-actions,.inline-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.btn{height:42px;min-width:112px;padding:0 16px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;font-size:14px;font-weight:700;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,var(--bright) 0%,var(--brand) 55%,var(--darkgold) 100%);color:var(--bg)}.btn-secondary{background:var(--deep);border:1px solid var(--line2);color:var(--title)}
a:hover,.topline-search:hover,.icon-button:hover{color:var(--cream)}.btn-primary:hover{filter:brightness(1.05)}.btn-secondary:hover,.app-link:hover{border-color:var(--bright)}a:focus-visible,button:focus-visible{outline:2px solid var(--bright);outline-offset:3px}
.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);overflow:hidden}.card-body{padding:16px}.card-num{display:inline-block;color:var(--brand);font-weight:800;letter-spacing:.08em;margin-bottom:6px}
.feature-row{display:grid;grid-template-columns:minmax(0,360px) 1fr;gap:20px;align-items:stretch;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.feature-row.reverse{grid-template-columns:1fr minmax(0,360px)}.feature-row.reverse .feature-media{order:2}.feature-media{background:var(--deep);min-height:220px;display:flex;align-items:center;justify-content:center}.feature-media img{width:100%;height:100%;max-height:252px;object-fit:contain}.feature-copy{padding:20px}
.number-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.number-item{padding:14px;background:var(--panel2);border:1px solid var(--line);border-radius:10px}.number-item strong{display:block;font-size:22px;color:var(--bright);margin-bottom:4px}.number-item span{display:block;color:var(--text);font-weight:700}.number-item p{font-size:13px;color:var(--muted);margin:6px 0 0}
.shelf{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.shelf-item{position:relative;padding:16px 16px 16px 20px;background:var(--panel);border:1px solid var(--line);border-radius:10px}.shelf-item:before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;background:linear-gradient(var(--bright),var(--darkgold));border-radius:3px}.shelf-item .meta{font-size:12px;color:var(--soft);margin-bottom:4px}.shelf-item h3{margin-bottom:5px}
.timeline{position:relative;padding-left:24px}.timeline:before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:1px;background:var(--line2)}.timeline-item{position:relative;margin:0 0 16px;padding:14px 16px;background:var(--panel);border:1px solid var(--line);border-radius:10px}.timeline-item:before{content:"";position:absolute;left:-22px;top:20px;width:9px;height:9px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px var(--bg)}.status{display:inline-flex;padding:2px 8px;border-radius:999px;background:var(--brand);color:var(--bg);font-size:12px;font-weight:700;margin-bottom:6px}
.note-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.note-card{padding:16px;background:var(--panel);border:1px solid var(--line);border-radius:10px}.note-card strong{display:block;color:var(--bright);margin-bottom:5px}
.article{max-width:920px}.article section{padding:18px 0;border-bottom:1px solid var(--line)}.article section:last-child{border-bottom:0}.article ul,.article ol{padding-left:20px;margin:8px 0 0}.article li{margin:6px 0}.article .callout{margin:16px 0;padding:16px;border-left:3px solid var(--brand);background:var(--panel2);border-radius:0 10px 10px 0;color:var(--cream)}
.faq-list{display:grid;gap:12px}.faq-item{padding:18px;background:var(--panel);border:1px solid var(--line);border-radius:12px}.faq-item h2{font-size:16px;margin-bottom:8px}.faq-item p:last-child{margin-bottom:0}
.site-footer{background:var(--deep);border-top:1px solid var(--line2);font-size:13px;padding:26px 0 calc(28px + env(safe-area-inset-bottom))}.footer-head{display:flex;gap:24px;align-items:flex-start;justify-content:space-between}.footer-brand{display:flex;align-items:center;gap:12px;min-width:220px}.footer-brand strong,.footer-brand span{display:block}.footer-brand strong{color:var(--title)}.footer-brand span{color:var(--muted);font-size:12px}.footer-note{max-width:720px;color:var(--muted)}.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}.footer-grid h2{font-size:13px;margin-bottom:8px;color:var(--bright)}.footer-grid a{display:block;color:var(--text);padding:3px 0}.footer-bottom{margin-top:20px;padding-top:14px;border-top:1px solid var(--line);color:var(--soft)}
.ui-mask{position:fixed;inset:0;background:rgba(0,0,0,.66);z-index:120;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s ease}.ui-mask.is-visible{opacity:1;visibility:visible;pointer-events:auto}.ui-locked{overflow:hidden}
.race-drawer{position:fixed;top:0;right:0;z-index:130;width:min(400px,86vw);height:100dvh;background:var(--deep);border-left:1px solid var(--line2);box-shadow:var(--shadow);transform:translateX(104%);visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s ease;display:flex;flex-direction:column}.race-drawer.is-visible{visibility:visible;pointer-events:auto}.race-drawer.is-open{transform:translateX(0)}.drawer-head{height:70px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 16px;border-bottom:1px solid var(--line)}.drawer-brand{display:flex;align-items:center;gap:10px;color:var(--title)}.icon-button{min-width:60px;height:40px;padding:0 12px;border-radius:9px;background:var(--panel2);color:var(--title);border:1px solid var(--line)}.drawer-scroll{overflow:auto;padding:12px 14px 24px}.drawer-group{padding:10px 0;border-bottom:1px solid var(--line)}.drawer-group:last-child{border-bottom:0}.drawer-group h2{font-size:12px;color:var(--brand);letter-spacing:.08em}.drawer-group a{display:block;padding:10px 12px;border-radius:9px}.drawer-group a:hover{background:var(--panel)}.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}
.site-search{position:fixed;z-index:135;left:0;right:0;top:82px;visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-10px);transition:opacity .18s ease,transform .18s ease,visibility .18s ease}.site-search.is-visible{visibility:visible;pointer-events:auto}.site-search.is-open{opacity:1;transform:translateY(0)}.search-card{width:min(calc(100% - 32px),900px);margin:0 auto;background:var(--panel);border:1px solid var(--line2);border-radius:0 0 14px 14px;box-shadow:var(--shadow);padding:18px}.search-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.search-head strong{display:block;color:var(--title);font-size:18px}.search-head p{margin:2px 0;color:var(--muted)}.search-presets{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px;margin-top:14px}.search-presets a{height:42px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:9px;background:var(--deep);color:var(--title)}.search-tip{font-size:12px;color:var(--soft);margin:12px 0 0}
.mobile-tabbar{display:none}
.breadcrumbs{display:flex;gap:7px;flex-wrap:wrap;font-size:12px;color:var(--soft);margin-bottom:10px}.breadcrumbs a{color:var(--muted)}
.info-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:14px 0}.info-strip div{padding:12px;border:1px solid var(--line);background:var(--panel2);border-radius:10px}.info-strip strong{display:block;color:var(--bright);margin-bottom:2px}.info-strip span{color:var(--muted);font-size:13px}
.kicker-box{padding:16px 18px;background:linear-gradient(135deg,rgba(243,208,86,.12),rgba(168,130,18,.05));border:1px solid var(--line2);border-radius:12px;margin:16px 0}
.definition-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.definition-grid article{padding:16px;background:var(--panel);border:1px solid var(--line);border-radius:10px}
@media (max-width:820px){
  .daytabs{display:none}.site-main{padding-top:82px;padding-bottom:72px}.grid-3,.grid-2,.footer-grid,.number-list,.shelf,.note-grid,.definition-grid{grid-template-columns:1fr}.feature-row,.feature-row.reverse{grid-template-columns:1fr}.feature-row.reverse .feature-media{order:0}.feature-media{min-height:180px}.footer-head{display:block}.footer-note{margin-top:14px}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.search-presets{grid-template-columns:repeat(3,minmax(0,1fr))}.site-search{top:0;height:100dvh;background:var(--deep);padding:0}.search-card{width:100%;height:100%;margin:0;border:0;border-radius:0;display:flex;flex-direction:column;justify-content:flex-start;padding:24px 16px calc(70px + env(safe-area-inset-bottom))}.mobile-tabbar{position:fixed;left:0;right:0;bottom:0;z-index:110;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(--line2)}.mobile-tabbar a{display:flex;align-items:center;justify-content:center;min-width:0;font-size:12px;color:var(--muted)}.mobile-tabbar a.is-current{background:var(--brand);color:var(--bg);font-weight:700}.hero-banner-slot{height:220px}.page-wrap{padding-top:22px}.info-strip{grid-template-columns:1fr}.racebar-inner{grid-template-columns:1fr auto 1fr}.brand-link{min-width:0}.brand-fallback{font-size:14px}.app-link,.drawer-trigger{min-width:74px;padding:0 10px}.topline-brand{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:72vw}
}
@media (max-width:480px){
  .shell{width:min(calc(100% - 32px),var(--max))}.hero-banner-slot{height:190px}.media-slot{height:160px}.media-slot.tall{height:180px}.footer-grid{grid-template-columns:1fr 1fr}.search-presets{grid-template-columns:1fr 1fr}.racebar-inner{gap:8px}.brand-link{max-width:120px}.brand-fallback{font-size:13px}.app-link,.drawer-trigger{min-width:68px;height:40px;font-size:13px}.page-head .lead{font-size:15px}
}