:root {
  --brand: #0d9488;
  --brand-deep: #0f766e;
  --brand-mist: #f0fdfa;
  --ink: #1e293b;
  --ink-2: #475569;
  --ink-3: #64748b;
  --canvas: #f6f8fa;
  --surface: #ffffff;
  --line: #e2e8f0;
  --warn-bg: #fff1f2;
  --warn-ink: #9f1239;
  --todo-bg: #fde68a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: #2dd4bf;
    --brand-deep: #5eead4;
    --brand-mist: #10302f;
    --ink: #e2e8f0;
    --ink-2: #cbd5e1;
    --ink-3: #94a3b8;
    --canvas: #0b1416;
    --surface: #111d20;
    --line: #23363a;
    --warn-bg: #3b1219;
    --warn-ink: #fecdd3;
    --todo-bg: #854d0e;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

header.site {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

header.site .inner, main, footer.site .inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

header.site .inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
  flex-wrap: wrap;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 19px;
  color: var(--ink);
  text-decoration: none;
}

.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(160deg, #2dd4bf, #0f5e59);
  display: grid;
  place-items: center;
}

.logo-mark span {
  display: block;
  width: 12px;
  height: 18px;
  background: repeating-linear-gradient(#fff 0 3px, transparent 3px 5px);
  border-radius: 2px;
}

nav.site a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 15px;
  margin-left: 16px;
}

nav.site a:hover, nav.site a[aria-current="page"] { color: var(--brand); }

main { padding-top: 32px; padding-bottom: 56px; }

h1 { font-size: 34px; line-height: 1.2; margin: 0 0 8px; letter-spacing: -0.02em; }
h2 { font-size: 22px; line-height: 1.3; margin: 40px 0 8px; letter-spacing: -0.01em; }
h3 { font-size: 18px; margin: 24px 0 4px; }
p, li { color: var(--ink-2); }
strong { color: var(--ink); }
a { color: var(--brand); }
ul, ol { padding-left: 22px; }
li { margin: 4px 0; }

.updated { color: var(--ink-3); font-size: 15px; margin: 0 0 24px; }

.lead { font-size: 19px; color: var(--ink-2); }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px 20px;
  margin: 20px 0;
}

.card.warn {
  background: var(--warn-bg);
  border-color: transparent;
}

.card.warn p, .card.warn li, .card.warn strong { color: var(--warn-ink); }

.toc {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px 20px;
}

.toc ol { margin: 6px 0; }
.toc a { text-decoration: none; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 15px;
  display: block;
  overflow-x: auto;
}

th, td {
  text-align: left;
  vertical-align: top;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-2);
  min-width: 140px;
}

th { color: var(--ink); background: var(--surface); }

.todo {
  background: var(--todo-bg);
  border-radius: 4px;
  padding: 0 4px;
}

.hero {
  text-align: center;
  padding: 24px 0 8px;
}

.hero .app-icon {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  margin: 0 auto 16px;
  background: linear-gradient(160deg, #2dd4bf, #0f5e59);
  display: grid;
  place-items: center;
}

.hero .app-icon span {
  width: 34px;
  height: 56px;
  background: repeating-linear-gradient(#fff 0 9px, transparent 9px 14px);
  border-radius: 6px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin: 24px 0;
}

.grid .card { margin: 0; }
.grid h3 { margin-top: 0; }

footer.site {
  border-top: 1px solid var(--line);
  background: var(--surface);
  font-size: 14px;
  color: var(--ink-3);
}

footer.site .inner { padding-top: 20px; padding-bottom: 28px; }
footer.site a { color: var(--ink-2); margin-right: 14px; }

@media (max-width: 520px) {
  h1 { font-size: 28px; }
  nav.site a { margin: 0 14px 0 0; }
}