:root {
  color-scheme: dark;
  --bg: #02090d;
  --panel: #07161a;
  --panel-2: #0d1e24;
  --line: rgba(111, 229, 216, 0.2);
  --text: #f5fbfc;
  --muted: #bdd0d6;
  --faint: #8fa4ad;
  --cyan: #29d8ca;
  --green: #62e68d;
  --amber: #ffb15f;
  --violet: #a78bfa;
  --max: 1120px;
  --radius: 8px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", ui-sans-serif, system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(4, 21, 25, 0.98), rgba(2, 9, 13, 0.99) 48%, #02070a),
    var(--bg);
  color: var(--text);
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.wrap {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  border-bottom: 1px solid var(--line);
  background: rgba(2, 9, 13, 0.86);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-size: 1.18rem;
  font-weight: 760;
  text-decoration: none;
}

.nav-links,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  color: var(--muted);
  font-size: 0.94rem;
}

.nav-links a,
.footer-links a {
  text-decoration: none;
}

.nav-links a:hover,
.footer-links a:hover {
  color: var(--cyan);
}

.hero {
  padding: 72px 0 36px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(300px, 0.92fr);
  gap: 44px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--cyan);
  font-weight: 720;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.12;
  letter-spacing: 0;
}

h1 {
  max-width: 820px;
  font-size: clamp(2.35rem, 5vw, 4.1rem);
  font-weight: 760;
}

h2 {
  margin-top: 44px;
  font-size: clamp(1.55rem, 2.5vw, 2.25rem);
}

h3 {
  font-size: 1.08rem;
}

p {
  color: var(--muted);
}

.lead {
  max-width: 760px;
  font-size: clamp(1.05rem, 1.7vw, 1.24rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid rgba(111, 229, 216, 0.35);
  border-radius: var(--radius);
  background: #0d9f99;
  color: #f7ffff;
  font-weight: 760;
  text-decoration: none;
}

.btn.secondary {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.22);
}

.preview {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(7, 22, 26, 0.82);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
  overflow: hidden;
}

.preview-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--faint);
  font-size: 0.8rem;
  font-family: "SFMono-Regular", Consolas, monospace;
}

.preview-body {
  padding: 18px;
  display: grid;
  gap: 12px;
}

.result {
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.035);
}

.result strong {
  display: block;
  margin-bottom: 4px;
}

.result span {
  color: var(--faint);
  font-size: 0.9rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(7, 22, 26, 0.72);
}

.card p {
  margin-bottom: 0;
}

.list {
  display: grid;
  gap: 12px;
  padding-left: 20px;
  color: var(--muted);
}

.note {
  margin: 28px 0 0;
  padding: 18px;
  border-left: 3px solid var(--amber);
  background: rgba(255, 177, 95, 0.08);
  color: #ffe0b8;
}

.section {
  padding: 20px 0 36px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(280px, 1.05fr);
  gap: 28px;
  align-items: start;
}

code {
  color: #d8fff9;
  font-family: "SFMono-Regular", Consolas, monospace;
}

pre {
  overflow-x: auto;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #061014;
  color: #d8fff9;
}

.footer {
  margin-top: 32px;
  padding: 30px 0 44px;
  border-top: 1px solid var(--line);
  color: var(--faint);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 18px;
}

@media (max-width: 820px) {
  .hero,
  .split,
  .grid {
    grid-template-columns: 1fr;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 18px 0;
  }
}