:root {
  color-scheme: dark;
  --bg: #0a0b0d;
  --panel: rgba(255, 255, 255, 0.055);
  --panel-strong: rgba(255, 255, 255, 0.09);
  --text: #f4f6f2;
  --muted: rgba(244, 246, 242, 0.68);
  --faint: rgba(244, 246, 242, 0.48);
  --line: rgba(255, 255, 255, 0.12);
  --lime: #a3f04b;
  --green: #5fd07f;
  --on-primary: #06210f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 0%, rgba(163, 240, 75, 0.16), transparent 34rem),
    radial-gradient(circle at 90% 20%, rgba(95, 208, 127, 0.12), transparent 30rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

a:hover {
  text-decoration: underline;
}

.wrap {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 56px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.mark {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(180deg, var(--lime), var(--green));
  color: var(--on-primary);
  display: grid;
  place-items: center;
  font-weight: 900;
}

nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 14px;
}

.hero {
  padding: 52px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.035));
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
}

h1 {
  margin: 0 0 16px;
  max-width: 760px;
  font-size: clamp(36px, 8vw, 72px);
  line-height: 0.95;
  letter-spacing: -0.03em;
}

h2 {
  margin: 42px 0 12px;
  font-size: 24px;
  line-height: 1.2;
}

h3 {
  margin: 28px 0 8px;
  font-size: 18px;
}

p {
  margin: 0 0 16px;
  color: var(--muted);
}

ul, ol {
  color: var(--muted);
  padding-left: 22px;
}

li + li {
  margin-top: 8px;
}

.lead {
  max-width: 720px;
  font-size: 18px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 22px;
}

.card {
  display: block;
  min-height: 168px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  color: var(--text);
}

.card:hover {
  background: var(--panel-strong);
  text-decoration: none;
}

.card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
}

.card span {
  color: var(--muted);
  font-size: 14px;
}

.content {
  max-width: 780px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.045);
}

.note {
  margin: 24px 0;
  padding: 16px 18px;
  border: 1px solid rgba(163, 240, 75, 0.28);
  border-radius: 14px;
  background: rgba(163, 240, 75, 0.08);
  color: var(--text);
}

.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 14px;
  background: linear-gradient(180deg, var(--lime), var(--green));
  color: var(--on-primary);
  font-weight: 800;
}

.button-link:hover {
  text-decoration: none;
}

.button-link.secondary {
  margin-left: 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
}

.placeholder {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.95em;
}

.meta {
  color: var(--faint);
  font-size: 14px;
}

footer {
  margin-top: 40px;
  color: var(--faint);
  font-size: 14px;
}

@media (max-width: 760px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    margin-bottom: 32px;
  }

  .hero,
  .content {
    padding: 24px;
    border-radius: 20px;
  }

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