:root {
  color-scheme: dark;
  --bg: #030711;
  --panel: #111923;
  --panel-2: #0b121c;
  --text: #f5f8ff;
  --muted: #a8b1bf;
  --line: rgba(255, 255, 255, 0.1);
  --accent: #35d3ff;
  --accent-2: #0077ff;
  --ok: #7ee787;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 0%, rgba(53, 211, 255, 0.18), transparent 34rem),
    radial-gradient(circle at 90% 12%, rgba(0, 119, 255, 0.16), transparent 30rem),
    linear-gradient(135deg, #030711 0%, #07111d 45%, #010307 100%);
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.shell {
  width: min(1040px, calc(100% - 40px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 750;
  letter-spacing: 0;
}

.mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #001018;
  font-weight: 900;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.96rem;
}

.hero {
  display: grid;
  gap: 22px;
  padding: 54px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(17, 25, 35, 0.92), rgba(7, 12, 20, 0.92));
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.35);
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-weight: 700;
}

h1 {
  margin: 0;
  max-width: 820px;
  font-size: clamp(2.6rem, 7vw, 5.25rem);
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  margin: 0 0 12px;
  font-size: clamp(1.35rem, 3vw, 2rem);
  line-height: 1.15;
}

h3 {
  margin: 22px 0 8px;
  font-size: 1.08rem;
}

p {
  margin: 0 0 14px;
  color: var(--muted);
}

.lead {
  max-width: 760px;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 14px;
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  font-weight: 700;
}

.button.primary {
  color: #001018;
  border: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 18px;
}

.card,
.content {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(17, 25, 35, 0.78);
}

.card {
  padding: 22px;
}

.card strong {
  display: block;
  margin-bottom: 6px;
  color: var(--text);
}

.content {
  max-width: 860px;
  margin: 0 auto;
  padding: 42px;
}

.content ul,
.content ol {
  margin: 8px 0 18px;
  padding-left: 24px;
  color: var(--muted);
}

.content li {
  margin: 8px 0;
}

.notice {
  padding: 16px 18px;
  border: 1px solid rgba(53, 211, 255, 0.25);
  border-radius: 16px;
  background: rgba(53, 211, 255, 0.08);
  color: var(--text);
}

.meta {
  color: var(--muted);
  font-size: 0.95rem;
}

.footer {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 760px) {
  .shell {
    width: min(100% - 28px, 1040px);
    padding-top: 22px;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    margin-bottom: 34px;
  }

  .hero,
  .content {
    padding: 28px;
    border-radius: 22px;
  }

  .grid {
    grid-template-columns: 1fr;
  }
}