:root {
  --bg: #080d1b;
  --surface: #111a31;
  --surface-2: #182443;
  --text: #f5f8ff;
  --muted: #b1bdd9;
  --accent: #55d6ff;
  --accent-2: #a995ff;
  --line: rgba(85, 214, 255, .2);
  --good: #62e6a7;
  --max: 1120px;
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: radial-gradient(circle at 10% 0%, rgba(169, 149, 255, .16), transparent 32%), var(--bg); color: var(--text); line-height: 1.65; }
a { color: inherit; }
img { max-width: 100%; display: block; }
.skip-link { position: absolute; left: -9999px; top: 1rem; z-index: 20; padding: .7rem 1rem; background: var(--accent); color: #07101d; border-radius: .5rem; }
.skip-link:focus { left: 1rem; }
.container { width: min(calc(100% - 2rem), var(--max)); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid var(--line); background: rgba(8, 13, 27, .92); backdrop-filter: blur(12px); }
.nav-wrap { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 1.2rem; }
.brand { display: inline-flex; align-items: center; gap: .72rem; text-decoration: none; font-weight: 800; letter-spacing: -.02em; }
.brand img { width: 44px; height: 44px; border-radius: 12px; }
.brand span small { display: block; color: var(--muted); font-size: .7rem; font-weight: 650; letter-spacing: .06em; text-transform: uppercase; }
nav { display: flex; align-items: center; flex-wrap: wrap; gap: .35rem; }
nav a { padding: .55rem .72rem; border-radius: .6rem; color: var(--muted); text-decoration: none; font-size: .92rem; }
nav a:hover, nav a:focus-visible, nav a[aria-current="page"] { color: var(--text); background: var(--surface-2); }
.nav-cta { border: 1px solid var(--accent); color: var(--accent) !important; }
.hero { padding: clamp(4rem, 8vw, 7rem) 0 3.5rem; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr); gap: clamp(2rem, 6vw, 5rem); align-items: center; }
.eyebrow { margin: 0 0 .8rem; color: var(--accent); font-size: .78rem; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -.035em; }
h1 { margin: 0; font-size: clamp(2.6rem, 7vw, 5.8rem); }
h2 { margin: 0 0 1rem; font-size: clamp(1.8rem, 4vw, 3.1rem); }
h3 { margin: 0 0 .55rem; font-size: 1.2rem; }
.lead { max-width: 720px; margin: 1.4rem 0 0; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.25rem); }
.actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1.7rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: .72rem 1rem; border-radius: .7rem; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #07101d; text-decoration: none; font-weight: 850; }
.button.secondary { background: transparent; border: 1px solid var(--line); color: var(--text); }
.device-card { position: relative; border: 1px solid var(--line); border-radius: 2rem; padding: 1.25rem; background: linear-gradient(160deg, var(--surface-2), var(--surface)); box-shadow: 0 30px 80px rgba(0,0,0,.3); }
.device-screen { min-height: 340px; border: 1px solid rgba(255,255,255,.08); border-radius: 1.35rem; background: linear-gradient(160deg, rgba(85,214,255,.12), rgba(169,149,255,.08)); padding: 1.4rem; }
.device-screen img { width: 70px; height: 70px; border-radius: 18px; margin-bottom: 1rem; }
.device-screen p { color: var(--muted); }
.signal { display: flex; gap: .35rem; margin-top: 1.5rem; }
.signal span { display: block; height: 8px; flex: 1; border-radius: 999px; background: var(--accent); opacity: calc(.35 + var(--i) * .18); }
.section { padding: clamp(3.3rem, 7vw, 6rem) 0; border-top: 1px solid var(--line); }
.section-head { max-width: 760px; margin-bottom: 2rem; }
.section-head p, .muted { color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.card { border: 1px solid var(--line); border-radius: 1rem; background: var(--surface); padding: 1.3rem; }
.card .tag { display: inline-block; margin-bottom: 1.2rem; color: var(--accent); font: 800 .75rem/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .08em; text-transform: uppercase; }
.card p { color: var(--muted); }
.checklist { display: grid; gap: .75rem; padding: 0; list-style: none; }
.checklist li { position: relative; padding: .9rem 1rem .9rem 2.7rem; border: 1px solid var(--line); border-radius: .8rem; background: rgba(255,255,255,.02); }
.checklist li::before { content: "✓"; position: absolute; left: 1rem; color: var(--good); font-weight: 900; }
.callout { border-left: 4px solid var(--accent-2); background: rgba(169,149,255,.09); padding: 1rem 1.2rem; border-radius: 0 .8rem .8rem 0; }
.spec-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.spec { border-bottom: 1px solid var(--line); padding: 1rem 0; }
.spec strong { display: block; color: var(--accent); }
.faq { display: grid; gap: .7rem; }
details { border: 1px solid var(--line); border-radius: .85rem; background: var(--surface); padding: 1rem 1.1rem; }
summary { cursor: pointer; font-weight: 800; }
details p { color: var(--muted); }
.page-hero { padding: 4rem 0 2.8rem; }
.breadcrumbs { color: var(--muted); font-size: .86rem; margin-bottom: 1.2rem; }
.breadcrumbs a { color: var(--accent); }
.page-hero h1 { font-size: clamp(2.4rem, 6vw, 4.6rem); }
.article-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 2rem; align-items: start; }
.side-panel { position: sticky; top: 96px; border: 1px solid var(--line); border-radius: 1rem; background: var(--surface); padding: 1.2rem; }
.side-panel a { color: var(--accent); }
.site-footer { border-top: 1px solid var(--line); padding: 2rem 0; color: var(--muted); font-size: .9rem; }
.footer-grid { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
@media (max-width: 820px) { .hero-grid, .article-grid { grid-template-columns: 1fr; } .grid { grid-template-columns: 1fr; } .side-panel { position: static; } .nav-wrap { align-items: flex-start; flex-direction: column; padding: .8rem 0; } nav { width: 100%; } }
@media (max-width: 560px) { .container { width: min(calc(100% - 1.25rem), var(--max)); } nav a { padding: .45rem .5rem; font-size: .82rem; } .spec-grid { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }