:root {
  --bg: #07111f;
  --surface: #0d1b2e;
  --card: #12243b;
  --border: #24405f;
  --text: #eef6ff;
  --muted: #9db0c6;
  --blue: #56b8ff;
  --cyan: #58e6d9;
  --amber: #ffc766;
  --green: #72e39a;
  --shadow: 0 20px 60px rgba(0,0,0,.26);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 15% -10%, rgba(86,184,255,.18), transparent 34rem),
    radial-gradient(circle at 90% 10%, rgba(88,230,217,.12), transparent 30rem),
    var(--bg);
  font: 16px/1.6 "Segoe UI", system-ui, sans-serif;
}
a { color: inherit; }
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px max(24px, calc((100vw - 1160px) / 2));
  border-bottom: 1px solid rgba(255,255,255,.08);
  background: rgba(7,17,31,.86);
  backdrop-filter: blur(16px);
}
.brand { font-weight: 800; text-decoration: none; letter-spacing: -.3px; }
.nav-links { display: flex; gap: 8px; }
.nav-links a { padding: 7px 11px; border-radius: 8px; color: var(--muted); text-decoration: none; font-size: 14px; }
.nav-links a:hover, .nav-links a.active { color: var(--text); background: rgba(255,255,255,.07); }
.wrap { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.hero { padding: 84px 0 52px; }
.eyebrow { color: var(--cyan); font-size: 12px; font-weight: 800; letter-spacing: 1.5px; text-transform: uppercase; }
h1 { max-width: 900px; margin: 12px 0 18px; font-size: clamp(42px, 7vw, 76px); line-height: 1.02; letter-spacing: -3px; }
h2 { margin: 0; font-size: clamp(27px, 4vw, 40px); line-height: 1.12; letter-spacing: -1.2px; }
h3 { margin: 0 0 8px; font-size: 18px; }
.lead { max-width: 780px; color: var(--muted); font-size: 19px; }
.section { margin: 24px 0 72px; padding: 32px; border: 1px solid var(--border); border-radius: 24px; background: rgba(13,27,46,.8); box-shadow: var(--shadow); }
.section-head { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; margin-bottom: 26px; }
.section-head p { max-width: 650px; margin: 8px 0 0; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.card { padding: 22px; border: 1px solid var(--border); border-radius: 16px; background: var(--card); }
.card p { margin: 0; color: var(--muted); }
.number { display: grid; place-items: center; width: 34px; height: 34px; margin-bottom: 15px; border-radius: 10px; color: #061424; background: var(--cyan); font-weight: 900; }
.switcher { display: inline-flex; padding: 4px; border: 1px solid var(--border); border-radius: 12px; background: #091625; }
.switcher button, .step-button {
  border: 0;
  color: var(--muted);
  background: transparent;
  font: inherit;
  cursor: pointer;
}
.switcher button { padding: 9px 14px; border-radius: 9px; font-size: 13px; font-weight: 700; }
.switcher button.active { color: #061424; background: var(--cyan); }
.summary { margin-top: 16px; padding: 16px 18px; border-left: 3px solid var(--cyan); border-radius: 8px; color: var(--muted); background: rgba(88,230,217,.07); }
.steps { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 7px; }
.step-button { min-width: 150px; padding: 13px; border: 1px solid var(--border); border-radius: 12px; text-align: left; }
.step-button.active { color: var(--text); border-color: var(--cyan); background: rgba(88,230,217,.08); }
.detail { margin-top: 16px; padding: 24px; border-radius: 16px; background: #091625; }
.detail p { color: var(--muted); }
.detail-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 18px; }
.detail-item { padding: 13px; border: 1px solid var(--border); border-radius: 10px; color: var(--muted); }
.detail-item strong { display: block; color: var(--text); }
.callout { padding: 20px; border: 1px solid rgba(114,227,154,.35); border-radius: 14px; background: rgba(114,227,154,.08); color: #baf4cc; }
.footer { padding: 30px 0 46px; color: var(--muted); font-size: 13px; text-align: center; }
.home-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 18px 0 80px; }
.home-card { display: block; min-height: 300px; padding: 34px; border: 1px solid var(--border); border-radius: 24px; background: var(--surface); text-decoration: none; box-shadow: var(--shadow); transition: transform .2s, border-color .2s; }
.home-card:hover { transform: translateY(-5px); border-color: var(--cyan); }
.home-card .arrow { display: inline-block; margin-top: 34px; color: var(--cyan); font-weight: 800; }
@media (max-width: 800px) {
  .nav { align-items: flex-start; }
  .nav-links { flex-wrap: wrap; justify-content: flex-end; }
  .hero { padding-top: 58px; }
  h1 { letter-spacing: -2px; }
  .section { padding: 22px; }
  .section-head { flex-direction: column; }
  .grid, .home-grid, .detail-list { grid-template-columns: 1fr; }
}