:root {
  color-scheme: dark;
  --page-bg: #090c13;
  --page-panel: rgba(7, 12, 20, 0.86);
  --page-border: rgba(148, 163, 184, 0.14);
  --page-text: #f8fafc;
  --page-muted: #8a96a8;
  --page-soft: rgba(255, 255, 255, 0.05);
  --page-accent: #4ade80;
  --page-accent-soft: rgba(74, 222, 128, 0.16);
  --page-glow-a: rgba(34, 197, 94, 0.15);
  --page-glow-b: rgba(45, 212, 191, 0.1);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--page-bg);
  color: var(--page-text);
  font-family: "Syne", sans-serif;
}

body {
  background-image:
    radial-gradient(circle at top right, var(--page-glow-a, rgba(249, 115, 22, 0.14)), transparent 28%),
    radial-gradient(circle at bottom left, var(--page-glow-b, rgba(59, 130, 246, 0.12)), transparent 26%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.015), rgba(255, 255, 255, 0));
}

button,
a {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

pre,
code,
.mono {
  font-family: "IBM Plex Mono", monospace;
}

.page-shell {
  min-height: 100vh;
  padding: 24px 18px 40px;
}

.page-frame {
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: 22px;
  border: 1px solid var(--page-border);
  border-radius: 28px;
  background: var(--page-panel);
  backdrop-filter: blur(18px);
  box-shadow: 0 24px 80px rgba(2, 6, 23, 0.28);
}

.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--page-border);
}

.top-nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.brand-label {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #f8fafc;
}

.brand-pill {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  color: var(--page-muted);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.top-nav-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.top-link {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--page-border);
  color: var(--page-muted);
  transition: transform 180ms ease, color 180ms ease, border-color 180ms ease, background 180ms ease;
}

.top-link:hover,
.top-link:focus-visible {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.22);
  transform: translateY(-1px);
}

.top-link.active {
  color: #0b1120;
  border-color: transparent;
  background: var(--page-accent);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(260px, 0.9fr);
  gap: 18px;
  align-items: end;
  padding: 34px 0 30px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--page-accent);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.hero-title {
  margin: 0;
  font-size: clamp(2.8rem, 7vw, 5.8rem);
  line-height: 0.92;
  letter-spacing: -0.06em;
}

.hero-accent {
  color: var(--page-accent);
}

.hero-description {
  margin: 18px 0 0;
  max-width: 52rem;
  color: var(--page-muted);
  line-height: 1.72;
  font-size: 1rem;
}

.hero-meta {
  display: grid;
  gap: 12px;
  padding: 18px;
  border-radius: 24px;
  border: 1px solid var(--page-border);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02)),
    rgba(7, 12, 20, 0.85);
}

.hero-meta-label {
  color: var(--page-muted);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-meta-value {
  font-size: 1.2rem;
  line-height: 1.35;
}

.hero-meta-small {
  color: var(--page-muted);
  line-height: 1.6;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 22px;
  border-radius: 24px;
  border: 1px solid var(--page-border);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02)),
    rgba(6, 10, 17, 0.95);
  overflow: hidden;
}

.card-wide {
  grid-column: span 2;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--card-accent), transparent 60%);
}

.card-number {
  margin-bottom: 10px;
  color: #475569;
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.card-tag {
  display: inline-flex;
  align-self: flex-start;
  margin-bottom: 14px;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--card-tag-border);
  background: var(--card-tag-bg);
  color: var(--card-accent);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.card-title {
  margin: 0 0 8px;
  font-size: 1.22rem;
  line-height: 1.15;
}

.card-description {
  margin: 0 0 16px;
  color: var(--page-muted);
  line-height: 1.62;
  font-size: 0.96rem;
}

.code-wrap {
  position: relative;
  margin-top: auto;
}

.code-block {
  margin: 0;
  padding: 16px 14px 14px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  background: rgba(3, 7, 14, 0.94);
  color: #d7e0ee;
  line-height: 1.7;
  font-size: 0.84rem;
  white-space: pre-wrap;
}

.code-line {
  display: block;
}

.code-line.comment {
  color: #5f6f86;
}

.code-token.command {
  color: var(--card-accent);
}

.copy-button {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 5px 9px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  color: #8ea0b8;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.copy-button:hover,
.copy-button:focus-visible {
  transform: translateY(-1px);
  color: #f8fafc;
  border-color: rgba(255, 255, 255, 0.16);
}

.copy-button.success {
  background: rgba(34, 197, 94, 0.14);
  border-color: rgba(34, 197, 94, 0.3);
  color: #4ade80;
}

.copy-button.error {
  background: rgba(239, 68, 68, 0.14);
  border-color: rgba(239, 68, 68, 0.3);
  color: #f87171;
}

.page-footer {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--page-border);
  color: #5f6f86;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.copy-button:focus-visible,
.top-link:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.4);
  outline-offset: 2px;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }

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

  .card-wide {
    grid-column: span 1;
  }
}

@media (max-width: 640px) {
  .page-shell {
    padding-inline: 12px;
  }

  .page-frame {
    padding: 16px;
    border-radius: 22px;
  }

  .hero {
    padding-top: 26px;
  }
}