:root {
  --ink-950: #08090d; --ink-900: #0d0f15; --ink-800: #161a23; --line: rgb(255 255 255 / 0.08);
  --fg: #eceef4; --muted: #8d93a5; --faint: #5b6172; --brand: #7c6cff; --safe: #3df0c0; --bad: #ff6b6b;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--ink-950); color: var(--fg); font: 16px/1.6 system-ui, "Segoe UI", sans-serif; }
a { color: var(--brand); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }
header { border-bottom: 1px solid var(--line); }
header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: .04em; color: var(--fg); text-decoration: none; }
.logo b { color: var(--brand); }
nav a { color: var(--muted); text-decoration: none; margin-left: 20px; font-size: 14px; }
.hero { padding: 72px 0 40px; text-align: center; }
.hero h1 { font-size: clamp(32px, 6vw, 52px); line-height: 1.1; margin: 0 0 16px; }
.hero p { color: var(--muted); max-width: 640px; margin: 0 auto; font-size: 18px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; margin: 40px 0; }
.card { background: var(--ink-900); border: 1px solid var(--line); border-radius: 16px; padding: 22px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; }
.price { font-size: 36px; font-weight: 700; margin: 8px 0; }
.price small { font-size: 15px; color: var(--muted); font-weight: 400; }
.btn { display: inline-block; border: 0; border-radius: 10px; background: var(--brand); color: #fff; font-weight: 600; padding: 11px 18px; cursor: pointer; font-size: 15px; }
.btn.secondary { background: var(--ink-800); border: 1px solid var(--line); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
input { width: 100%; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--ink-950); color: var(--fg); font-size: 15px; margin-bottom: 10px; }
.note { color: var(--faint); font-size: 13px; }
.ok { color: var(--safe); } .err { color: var(--bad); }
.test { background: #3a2f12; color: #f5b041; text-align: center; font-size: 13px; padding: 6px; }
footer { border-top: 1px solid var(--line); margin-top: 64px; padding: 28px 0; color: var(--faint); font-size: 14px; }
footer a { color: var(--muted); margin-right: 18px; }
.legal { max-width: 760px; padding: 40px 20px; }
.legal h1 { font-size: 32px; } .legal h2 { font-size: 20px; margin-top: 32px; }
.legal p, .legal li { color: #c9cdd8; }