* { box-sizing: border-box; }
:root {
  --text: #172033;
  --muted: #64748b;
  --border: #dbe2ea;
  --bg: #f6f8fb;
  --surface: #fff;
  --accent: #2563eb;
  --danger: #b91c1c;
}
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
}
a { color: inherit; }
.container { width: min(1080px, calc(100% - 32px)); margin: 0 auto; }
.site-header { background: var(--surface); border-bottom: 1px solid var(--border); }
.header-inner { min-height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo { font-weight: 800; text-decoration: none; }
nav { display: flex; flex-wrap: wrap; gap: 16px; font-size: .9rem; }
nav a { text-decoration: none; color: var(--muted); }
nav a:hover, nav a:focus-visible { text-decoration: underline; }
.hero { padding: 72px 0 40px; max-width: 760px; }
.eyebrow { margin: 0 0 8px; font-size: .8rem; font-weight: 800; letter-spacing: .12em; color: var(--accent); }
h1 { margin: 0 0 16px; line-height: 1.25; font-size: clamp(2rem, 5vw, 3.4rem); }
h2 { line-height: 1.3; }
.hero p { color: var(--muted); }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; padding-bottom: 72px; }
.card { display: block; background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 28px; text-decoration: none; transition: transform .15s ease, box-shadow .15s ease; }
.card:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgb(15 23 42 / 8%); }
.card p { color: var(--muted); }
.tag { display: inline-block; font-size: .75rem; font-weight: 800; color: var(--accent); }
.demo-page { min-height: 100vh; }
.demo-wrap { width: min(880px, calc(100% - 32px)); margin: 0 auto; padding: 56px 0 80px; }
.back { display: inline-block; margin-bottom: 32px; color: var(--muted); }
.demo-note { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px; margin-top: 24px; }
.service { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; overflow: hidden; }
.service-main { padding: clamp(32px, 7vw, 72px); }
.service-main h1 { max-width: 700px; }
.service-main .lead { font-size: 1.15rem; color: var(--muted); max-width: 680px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 32px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 10px 20px; border-radius: 10px; border: 1px solid transparent; font: inherit; font-weight: 750; cursor: pointer; text-decoration: none; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-secondary { background: #fff; border-color: var(--border); }
.btn-link { background: none; border: 0; color: var(--accent); padding-inline: 4px; }
.benefits { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 40px; }
.benefit { padding: 18px; background: #f8fafc; border-radius: 12px; }
.benefit strong { display: block; }
.small { color: var(--muted); font-size: .9rem; }
.footer-links { border-top: 1px solid var(--border); padding: 20px 32px; display: flex; gap: 20px; flex-wrap: wrap; }
.muted-action { color: var(--muted); text-decoration: none; }
.strong-action { font-weight: 800; }
.choice-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 28px; }
.choice { border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.choice h2 { font-size: 1.05rem; }
.danger-box { border: 2px solid #fecaca; background: #fff7f7; border-radius: 14px; padding: 20px; margin-top: 28px; }
.danger-box .primary { background: #dc2626; color: #fff; }
.danger-box .quiet { color: #94a3b8; font-size: .75rem; text-decoration: none; }
.fake-countdown { font-weight: 800; color: var(--danger); }
@media (max-width: 760px) {
  .header-inner { align-items: flex-start; padding: 14px 0; flex-direction: column; }
  .cards, .benefits, .choice-grid { grid-template-columns: 1fr; }
  nav { gap: 10px; }
}
:focus-visible { outline: 3px solid #111827; outline-offset: 3px; }