:root{
  --bg:#0b0f14;
  --fg:#e9eef3;
  --muted:#a7b0ba;
  --card:#121820;
  --accent:#ff7a18;
  --line:#2a3441;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif}
a{color:var(--fg);text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.site-header{position:sticky;top:0;background:rgba(11,15,20,.85);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);z-index:10}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:64px}
.nav a{margin-left:18px;color:var(--muted)}
.nav a:hover{color:var(--fg)}

.hero{padding:72px 0;background:radial-gradient(80% 80% at 20% 10%, rgba(255,122,24,.18), transparent 45%), radial-gradient(90% 80% at 90% 20%, rgba(207,59,59,.14), transparent 60%)}
.hero h1{font-size:40px;margin:0 0 8px}
.hero .sub{color:var(--muted);margin:0 0 22px}
.btn{display:inline-block;padding:12px 18px;border:1px solid var(--line);border-radius:8px}
.btn.primary{background:var(--accent);border-color:transparent;color:#111;font-weight:600}
.btn + .btn{margin-left:10px}

.features{padding:56px 0;border-top:1px solid var(--line)}
.grid-2{display:grid;grid-template-columns:1.2fr .8fr;gap:24px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px}
.checklist{list-style:none;padding:0;margin:0}
.checklist li{margin:10px 0;padding-left:24px;position:relative}
.checklist li::before{content:"✓";position:absolute;left:0;color:var(--accent)}

.legend{margin-top:12px;display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.swatch{display:inline-block;width:14px;height:14px;border-radius:50%;margin-right:6px;border:1px solid var(--line);vertical-align:middle}
.swatch.brown{background:#7a4a2e}
.swatch.red{background:#cf3b3b}
.swatch.orange{background:#ff7a18}

.specs{padding:56px 0;border-top:1px solid var(--line)}
.spec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.spec{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px}
.spec .k{color:var(--muted);font-size:13px}
.spec .v{font-size:18px;font-weight:600}

.configs{padding:56px 0;border-top:1px solid var(--line)}
.table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.table th,.table td{padding:12px;border-bottom:1px solid var(--line);text-align:left}
.table thead th{background:#16202a;color:#cfe1ff;font-weight:600}
.table tr:hover td{background:#141a22}

.downloads{padding:56px 0;border-top:1px solid var(--line)}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cards .card{transition:transform .15s ease, box-shadow .2s ease}
.cards .card:hover{transform:translateY(-3px);box-shadow:0 12px 24px rgba(0,0,0,.25)}
.cards .card span{display:inline-block;margin-top:8px;color:var(--muted)}

.contact{padding:56px 0;border-top:1px solid var(--line)}
.row{display:flex;flex-direction:column;margin-bottom:12px}
input,textarea{background:#0e141b;border:1px solid var(--line);border-radius:8px;padding:10px;color:var(--fg)}
.tiny{color:var(--muted);font-size:12px;margin-top:8px}

.site-footer{border-top:1px solid var(--line);padding:18px 0;color:var(--muted);text-align:center}

@media (max-width: 900px){
  .grid-2{grid-template-columns:1fr}
  .spec-grid{grid-template-columns:repeat(2,1fr)}
  .cards{grid-template-columns:1fr}
  .hero h1{font-size:32px}
}