:root{
  --base:#14141C; --base-2:#1D1D29; --surface:#FFFFFF; --paper:#F6F5FA;
  --glow:#7B5CFF; --glow-soft:#A98DFF; --glow-dim:#241B3D;
  --ink:#1A1A22; --muted:#6E6E82; --muted-light:#9A98AE;
  --line:#2C2C3C; --line-light:#E2E0EC;
  --ok:#2FA06A; --warn:#C98A1E; --danger:#D44848;
  --radius:3px; --max:1200px;
  --font:-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:var(--font);color:var(--ink);background:var(--paper);line-height:1.62;font-size:15px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
table{border-collapse:collapse;width:100%}
.shell{max-width:var(--max);margin:0 auto;padding:0 26px}
.band{padding:68px 0}
.band--alt{background:var(--surface);border-top:1px solid var(--line-light);border-bottom:1px solid var(--line-light)}
.band--deep{background:var(--base);color:#fff}
.band--deep .muted{color:#A9A7BE}

/* topbar */
.topbar{position:sticky;top:0;z-index:50;background:var(--base);border-bottom:1px solid var(--line)}
.topbar .shell{display:flex;align-items:center;gap:30px;height:66px}
.topbar__mark{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:.03em;color:#fff;margin-right:10px}
.topbar__mark .glyph{width:28px;height:28px;border-radius:50%;background:var(--glow-dim);border:1px solid var(--glow);display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:0 0 10px rgba(123,92,255,.45)}
.topbar__mark .glyph svg{width:16px;height:16px;color:var(--glow-soft)}
.topbar__links{display:flex;gap:26px;flex:1}
.topbar__links a{font-size:13.5px;color:#9A98AE;font-weight:600;letter-spacing:.02em;text-transform:uppercase}
.topbar__links a:hover,.topbar__links a.is-active{color:#fff}
.topbar__side{display:flex;align-items:center;gap:18px}
.topbar__locale{font-size:12px;color:#6E6E82}
.topbar__locale b{color:#fff}

/* cta buttons */
.cta{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:var(--radius);font-size:13.5px;font-weight:700;letter-spacing:.02em;text-transform:uppercase;border:1px solid transparent;cursor:pointer}
.cta--solid{background:var(--glow);color:#fff}
.cta--solid:hover{background:#6B4AE0}
.cta--outline{border-color:var(--glow);color:var(--glow);background:transparent}
.cta--outline.on-dark{border-color:rgba(255,255,255,.4);color:#fff}
.cta--ghost{border-color:var(--line-light);color:var(--ink);background:#fff}
.cta--sm{padding:9px 15px;font-size:12px}

/* intro (hero) */
.intro{background:var(--base);color:#fff;padding:64px 0 0;position:relative;overflow:hidden}
.intro::before{content:"";position:absolute;top:-30%;right:-10%;width:60%;height:160%;background:radial-gradient(circle,rgba(123,92,255,.22) 0%,rgba(123,92,255,0) 70%);pointer-events:none}
.intro.has-photo{background-size:cover;background-position:center;background-blend-mode:multiply}
.intro__eyebrow{color:var(--glow-soft);font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;margin-bottom:14px}
.intro__title{font-size:40px;line-height:1.2;max-width:760px;margin-bottom:18px;position:relative}
.intro__lead{color:#B9B7CC;max-width:640px;font-size:16px;position:relative}
.intro__actions{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap;position:relative}
.intro__metrics{margin-top:42px;border-top:1px solid rgba(255,255,255,.14);position:relative}
.intro__metrics .shell{display:flex;gap:0}
.metric{flex:1;padding:22px 26px;border-right:1px solid rgba(255,255,255,.1)}
.metric:last-child{border-right:0}
.metric b{display:block;font-size:23px;color:var(--glow-soft)}
.metric span{font-size:12px;color:#8E8CA3}

/* banner (非首页顶部) */
.banner{background:var(--base);color:#fff;padding:46px 0}
.breadcrumb-trail{font-size:12px;color:#8E8CA3;margin-bottom:12px}
.breadcrumb-trail a{color:#B9B7CC}
.banner h1{font-size:27px}
.banner .lead{color:#B9B7CC;margin-top:10px;max-width:760px;font-size:14.5px}

/* lattice (grid) */
.lattice{display:grid;gap:20px}
.lattice-2{grid-template-columns:repeat(2,1fr)}
.lattice-3{grid-template-columns:repeat(3,1fr)}
.lattice-4{grid-template-columns:repeat(4,1fr)}
.lattice-5{grid-template-columns:repeat(5,1fr)}
@media(max-width:980px){.lattice-4,.lattice-5{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.lattice-2,.lattice-3,.lattice-4,.lattice-5{grid-template-columns:1fr}}

/* panel (card) */
.panel{background:var(--surface);border:1px solid var(--line-light);border-radius:var(--radius);padding:24px}
.panel .glyph{width:34px;height:34px;color:var(--glow);margin-bottom:16px}
.panel h3{font-size:16px;color:var(--ink);margin-bottom:7px}
.panel p{color:var(--muted);font-size:13.5px}
.panel--glow{border-color:var(--glow);box-shadow:0 0 0 1px var(--glow),0 0 20px rgba(123,92,255,.18)}
.chip{display:inline-block;font-size:10.5px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;padding:3px 9px;border-radius:2px;background:var(--glow-dim);color:var(--glow-soft);margin-top:11px}

.heading-group{max-width:720px;margin-bottom:32px}
.eyebrow{color:var(--glow);font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;margin-bottom:11px}
.heading-group h2{font-size:27px;margin-bottom:11px}
.heading-group p{color:var(--muted);font-size:15px}

/* duo (split media) */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:38px;align-items:center}
.duo img{width:100%;height:auto;border-radius:var(--radius);object-fit:cover;aspect-ratio:4/3}
@media(max-width:860px){.duo{grid-template-columns:1fr}.duo .media-col{order:-1}}

/* specs (table) */
.specs-wrap{overflow-x:auto;border:1px solid var(--line-light);border-radius:var(--radius)}
.specs{font-size:13.5px}
.specs th,.specs td{padding:11px 15px;text-align:left;border-bottom:1px solid var(--line-light)}
.specs th{background:var(--paper);font-weight:700;color:var(--muted);font-size:11.5px;text-transform:uppercase;letter-spacing:.05em}
.specs tr:last-child td{border-bottom:0}

/* qa (faq) */
.qa details{border-bottom:1px solid var(--line-light);padding:17px 0}
.qa summary{cursor:pointer;font-weight:700;font-size:15px;list-style:none;display:flex;justify-content:space-between;align-items:center}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";font-size:21px;color:var(--glow);font-weight:400}
.qa details[open] summary::after{content:"\2212"}
.qa-a{margin-top:13px;color:var(--muted);font-size:14px}

/* inquiry form */
.inquiry-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}
.inquiry-grid .full{grid-column:1/-1}
.field label{display:block;font-size:12.5px;font-weight:700;margin-bottom:7px;color:var(--ink);text-transform:uppercase;letter-spacing:.03em}
.field input,.field select,.field textarea{width:100%;padding:11px 13px;border:1px solid var(--line-light);border-radius:var(--radius);font-size:14px;font-family:inherit;background:#fff}
.field textarea{min-height:104px;resize:vertical}
@media(max-width:680px){.inquiry-grid{grid-template-columns:1fr}}

/* footer */
.foot{background:var(--base);color:#B9B7CC;padding:54px 0 26px}
.foot h5{color:#fff;font-size:12.5px;text-transform:uppercase;letter-spacing:.06em;margin-bottom:15px}
.foot a{display:block;color:#8E8CA3;font-size:13.5px;padding:4px 0}
.foot a:hover{color:#fff}
.foot-contact{list-style:none;padding:0;margin:0}
.foot-contact li{display:flex;align-items:flex-start;gap:9px;margin-bottom:11px;color:#8E8CA3;font-size:13.5px}
.foot-contact .glyph{width:15px;height:15px;flex-shrink:0;margin-top:2px;color:var(--glow-soft)}
.foot-bottom{margin-top:36px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12px;color:#6E6C84}
.foot-legal a{display:inline;padding:0;color:#6E6C84}

@media(max-width:860px){
  .topbar__links{display:none}
  .intro__metrics .shell{flex-wrap:wrap}
  .metric{flex:1 1 50%;border-right:0;border-bottom:1px solid rgba(255,255,255,.1)}
}