:root{
    --bg:#050816;
    --panel:#0c1025;
    --panel-2:#121935;
    --text:#f3f7ff;
    --muted:#aab6d6;
    --line:rgba(255,255,255,.12);
    --cyan:#39d5ff;
    --purple:#9b5cff;
    --green:#61ffca;
    --shadow:0 24px 80px rgba(0,0,0,.35);
    --radius:24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    margin:0;
    background:radial-gradient(circle at 20% 5%,rgba(57,213,255,.22),transparent 30%),radial-gradient(circle at 82% 14%,rgba(155,92,255,.22),transparent 34%),var(--bg);
    color:var(--text);
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;
    line-height:1.75;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.skip-link{position:absolute;left:-999px;top:8px;background:#fff;color:#111;padding:8px 12px;border-radius:8px;z-index:20}
.skip-link:focus{left:16px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.site-header{position:sticky;top:0;z-index:15;background:rgba(5,8,22,.78);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.nav-wrap{max-width:1180px;margin:0 auto;padding:16px 20px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand-mark{display:flex;align-items:center;gap:12px;font-size:24px;font-weight:900;letter-spacing:.08em}
.brand-orb{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--cyan),var(--purple));box-shadow:0 0 24px rgba(57,213,255,.65)}
.nav-toggle{display:none;background:transparent;color:var(--text);border:1px solid var(--line);border-radius:12px;padding:8px 12px;font-size:20px}
.nav-list{list-style:none;display:flex;align-items:center;gap:18px;margin:0;padding:0}
.nav-list a{padding:9px 12px;border-radius:999px;color:var(--muted);transition:.25s ease}
.nav-list a:hover,.nav-list a:focus{color:#fff;background:rgba(255,255,255,.08)}
.search-bar{max-width:1180px;margin:0 auto;padding:0 20px 18px;display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center}
.search-bar input{width:100%;border:1px solid var(--line);background:rgba(255,255,255,.07);color:var(--text);border-radius:16px;padding:13px 16px;outline:none}
.search-bar button,.btn{border:0;border-radius:16px;padding:13px 20px;background:linear-gradient(135deg,var(--cyan),var(--purple));color:#fff;font-weight:800;cursor:pointer;box-shadow:0 10px 30px rgba(57,213,255,.22)}
#search-feedback{grid-column:1 / -1;margin:0;color:var(--green);font-size:14px;min-height:1.2em}
main{overflow:hidden}
.hero{max-width:1180px;margin:0 auto;padding:78px 20px 42px;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(320px,.92fr);gap:38px;align-items:center}
.eyebrow{color:var(--green);font-weight:800;letter-spacing:.14em;text-transform:uppercase;margin:0 0 10px}
h1,h2,h3,h4{line-height:1.18;margin:0;color:#fff}
h1{font-size:clamp(38px,6vw,72px);letter-spacing:-.05em}
h2{font-size:clamp(28px,4vw,46px);letter-spacing:-.03em}
h3{font-size:22px}.hero p{color:var(--muted);font-size:18px}.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}.btn.secondary{background:rgba(255,255,255,.08);border:1px solid var(--line);box-shadow:none}.domain-pill{display:inline-flex;gap:8px;align-items:center;border:1px solid var(--line);background:rgba(255,255,255,.06);padding:8px 12px;border-radius:999px;color:var(--muted);font-size:14px}
.hero-panel{position:relative;background:linear-gradient(145deg,rgba(255,255,255,.1),rgba(255,255,255,.03));border:1px solid var(--line);border-radius:32px;padding:18px;box-shadow:var(--shadow)}
.hero-panel:before{content:"";position:absolute;inset:-1px;border-radius:32px;background:linear-gradient(135deg,rgba(57,213,255,.35),rgba(155,92,255,.15),transparent);z-index:-1;filter:blur(16px)}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:14px}.stat-card{border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.06);padding:16px;text-align:center}.stat-card strong{display:block;font-size:26px;color:#fff}.stat-card span{color:var(--muted);font-size:13px}
.section{max-width:1180px;margin:0 auto;padding:72px 20px}.section-title{max-width:780px;margin-bottom:30px}.section-title p:not(.eyebrow){color:var(--muted);font-size:17px}.section-title.compact{margin-bottom:20px}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.card,.json-card,.timeline-item,.quote-card,.related-card{border:1px solid var(--line);background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.035));border-radius:var(--radius);padding:22px;box-shadow:0 18px 50px rgba(0,0,0,.18);transition:transform .25s ease,border-color .25s ease}.card:hover,.video-card:hover,.related-card:hover{transform:translateY(-6px);border-color:rgba(57,213,255,.45)}.card p,.quote-card p,.timeline-item p,.related-card span{color:var(--muted)}.card .num{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:14px;background:rgba(57,213,255,.14);color:var(--cyan);font-weight:900;margin-bottom:18px}
.video-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.video-card{overflow:hidden;border:1px solid var(--line);border-radius:28px;background:rgba(255,255,255,.055);transition:.25s ease;box-shadow:var(--shadow)}.video-frame{position:relative;aspect-ratio:16 / 10;background:#111;overflow:hidden}.video-frame img,.video-frame video{width:100%;height:100%;object-fit:cover}.video-frame video{position:absolute;inset:0;opacity:0}.play-mark{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) scale(.86);width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.9);color:#111;font-weight:900;opacity:0;transition:.25s ease}.video-card:hover .play-mark{opacity:1;transform:translate(-50%,-50%) scale(1)}.video-card:hover img{filter:brightness(.7) saturate(1.15)}.video-info{padding:18px}.tag{display:inline-block;color:#06101a;background:var(--green);padding:2px 9px;border-radius:999px;font-size:12px;font-weight:900;margin:0 5px 8px 0}.video-info p{color:var(--muted)}.metrics{display:flex;flex-wrap:wrap;gap:10px;list-style:none;margin:14px 0 0;padding:0;color:var(--cyan);font-size:13px}.metrics li{border:1px solid rgba(57,213,255,.22);border-radius:999px;padding:3px 8px;background:rgba(57,213,255,.08)}
.engine{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center}.engine-visual{min-height:360px;border:1px solid var(--line);border-radius:32px;background:radial-gradient(circle at 35% 35%,rgba(57,213,255,.32),transparent 30%),radial-gradient(circle at 70% 70%,rgba(155,92,255,.28),transparent 34%),rgba(255,255,255,.05);position:relative;overflow:hidden}.engine-visual span{position:absolute;border:1px solid rgba(255,255,255,.18);border-radius:999px;color:#fff;background:rgba(5,8,22,.6);padding:8px 13px}.engine-visual span:nth-child(1){left:10%;top:18%}.engine-visual span:nth-child(2){right:12%;top:28%}.engine-visual span:nth-child(3){left:18%;bottom:22%}.engine-visual span:nth-child(4){right:18%;bottom:17%}.engine-visual:after{content:"";position:absolute;inset:23%;border:1px solid rgba(57,213,255,.36);border-radius:50%;box-shadow:0 0 90px rgba(57,213,255,.25)}
.timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.json-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.json-card pre{white-space:pre-wrap;word-break:break-word;max-height:310px;overflow:auto;color:#d7e4ff;background:rgba(0,0,0,.25);border-radius:16px;padding:14px;font-size:12px}.faq-list{display:grid;gap:12px}.faq-list details{border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.055);padding:16px}.faq-list summary{cursor:pointer;font-weight:800;color:#fff}.faq-list p{color:var(--muted)}.quote-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}.quote-card strong{color:var(--green)}.contact-box{display:grid;grid-template-columns:1fr 1fr;gap:22px}.contact-list{list-style:none;margin:0;padding:0}.contact-list li{padding:12px 0;border-bottom:1px solid var(--line);color:var(--muted)}.contact-list strong{color:#fff;display:inline-block;min-width:92px}.related-section{max-width:1180px;margin:0 auto;padding:30px 20px 72px}.related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.related-card{display:block}.site-footer{border-top:1px solid var(--line);background:#030511;max-width:none;margin-top:40px;padding:32px 20px;display:flex;justify-content:space-between;gap:20px;color:var(--muted)}.site-footer>div{max-width:560px}.site-footer strong{color:#fff}.breadcrumb{max-width:1180px;margin:0 auto;padding:26px 20px 0;color:var(--muted);font-size:14px}.breadcrumb a{color:var(--cyan)}.page-hero{max-width:1180px;margin:0 auto;padding:56px 20px 24px}.page-hero p{max-width:760px;color:var(--muted);font-size:18px}.list-card{display:grid;gap:10px}.list-card li{color:var(--muted)}
@media (max-width: 920px){.hero,.engine,.contact-box{grid-template-columns:1fr}.grid,.grid.two,.video-grid,.json-grid,.timeline,.quote-grid,.related-grid{grid-template-columns:1fr 1fr}.hero{padding-top:48px}.site-footer{flex-direction:column}}
@media (max-width: 680px){.nav-toggle{display:block}.nav-list{display:none;position:absolute;left:16px;right:16px;top:70px;flex-direction:column;align-items:stretch;background:#070b1b;border:1px solid var(--line);border-radius:18px;padding:14px}.nav-list.open{display:flex}.search-bar{grid-template-columns:1fr}.grid,.grid.two,.video-grid,.json-grid,.timeline,.quote-grid,.related-grid,.stats{grid-template-columns:1fr}h1{font-size:38px}.section{padding:48px 16px}.site-footer{padding:28px 16px}.nav-wrap{padding:14px 16px}.hero{padding-left:16px;padding-right:16px}.page-hero{padding-left:16px;padding-right:16px}}