:root {
  --bg: #faf9f7;
  --bg-elevated: #ffffff;
  --text: #1a1a1f;
  --text-muted: #5a5a66;
  --accent: #e8735a;
  --accent-soft: rgba(232, 115, 90, 0.1);
  --border: #ececea;
  --max-width: 760px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0b0f;
    --bg-elevated: #15141a;
    --text: #f5f3ef;
    --text-muted: #a09fad;
    --border: #2a2832;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter",
    "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

header.site {
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(180%) blur(14px);
}

header.site .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

header.site .brand {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

header.site .brand .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

header.site nav {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

header.site nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 999px;
  transition: background 0.15s, color 0.15s;
}

header.site nav a:hover,
header.site nav a.active {
  background: var(--accent-soft);
  color: var(--accent);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 56px 24px 96px;
}

main h1 {
  font-size: 36px;
  line-height: 1.15;
  margin: 0 0 8px;
  letter-spacing: -0.03em;
  font-weight: 700;
}

main .meta {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0 0 40px;
}

main h2 {
  font-size: 22px;
  margin: 48px 0 12px;
  letter-spacing: -0.015em;
  font-weight: 700;
}

main h3 {
  font-size: 17px;
  margin: 28px 0 8px;
  font-weight: 600;
}

main p,
main li {
  color: var(--text);
}

main p {
  margin: 0 0 16px;
}

main ul,
main ol {
  padding-left: 22px;
  margin: 0 0 16px;
}

main li {
  margin-bottom: 8px;
}

main a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

main a:hover {
  text-decoration-thickness: 2px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 24px;
  font-size: 15px;
}

table th,
table td {
  text-align: left;
  vertical-align: top;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}

table th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--bg-elevated);
}

.callout {
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  background: var(--bg-elevated);
  padding: 16px 20px;
  border-radius: 12px;
  margin: 24px 0;
  font-size: 15px;
  color: var(--text-muted);
}

.callout strong {
  color: var(--text);
}

footer.site {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

footer.site a {
  color: var(--text-muted);
  text-decoration: none;
  margin: 0 8px;
}

footer.site a:hover {
  color: var(--accent);
}

@media (max-width: 640px) {
  main {
    padding: 32px 20px 72px;
  }
  main h1 {
    font-size: 28px;
  }
  header.site .inner {
    padding: 14px 20px;
  }
  header.site nav a {
    padding: 6px 10px;
    font-size: 13px;
  }
}