:root { color-scheme: dark; --bg: #080b12; --card: #121827; --line: #263044; --txt: #f3f7ff; --muted: #aab5c8; --accent: #6ee7b7; --warn: #fbbf24; }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.55 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: radial-gradient(circle at top, #172033, var(--bg) 45%); color: var(--txt); }
.shell { width: min(1120px, calc(100% - 32px)); margin: 0 auto; padding: 48px 0; }
.hero { display: grid; gap: 18px; padding: 32px; border: 1px solid var(--line); border-radius: 28px; background: rgba(18,24,39,.82); box-shadow: 0 24px 80px rgba(0,0,0,.35); }
.eyebrow { color: var(--accent); text-transform: uppercase; letter-spacing: .16em; font-size: 12px; margin: 0; }
h1 { font-size: clamp(36px, 6vw, 74px); line-height: .95; margin: 0; max-width: 920px; }
h2 { margin: 0 0 8px; }
.lead { max-width: 820px; color: var(--muted); font-size: 19px; }
.gate-card, article, .status-panel { border: 1px solid var(--line); border-radius: 22px; background: rgba(10,14,24,.72); padding: 20px; }
.gate-card { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: end; max-width: 660px; }
.gate-card label, .hint { grid-column: 1 / -1; color: var(--muted); }
input { min-height: 48px; border-radius: 14px; border: 1px solid var(--line); background: #080b12; color: var(--txt); padding: 0 14px; }
button, .secondary { min-height: 48px; border: 0; border-radius: 14px; background: var(--accent); color: #04100c; font-weight: 800; padding: 0 18px; display: inline-grid; place-items: center; text-decoration: none; }
.secondary { background: transparent; color: var(--txt); border: 1px solid var(--line); margin-right: 8px; margin-top: 8px; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 18px 0; }
article span { display: inline-grid; width: 34px; height: 34px; place-items: center; border-radius: 999px; background: rgba(110,231,183,.16); color: var(--accent); font-weight: 800; margin-bottom: 14px; }
article p, li, .hint { color: var(--muted); }
.notice { border-left: 3px solid var(--warn); padding-left: 12px; color: var(--warn); }
@media (max-width: 840px) { .steps { grid-template-columns: 1fr; } .gate-card { grid-template-columns: 1fr; } }