:root {
  --fg: #0f0f10;
  --muted: #5e6470;
  --bg: #ffffff;
  --card: #fafafb;
  --border: #e8e8ec;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --radius: 14px;
  --shadow-sm: 0 1px 0 rgba(0, 0, 0, 0.04);
  --shadow-md: 0 1px 0 rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #f5f5f7;
    --muted: #a1a1aa;
    --bg: #0c0c0d;
    --card: #161618;
    --border: #2a2a2e;
    --accent: #60a5fa;
    --accent-hover: #93c5fd;
    --shadow-sm: 0 1px 0 rgba(0, 0, 0, 0.4);
    --shadow-md: 0 1px 0 rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.4);
  }
}

* {
  box-sizing: border-box;
}

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

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

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Top nav (every page) */
.topnav {
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}

.topnav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--fg);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
}

.brand:hover {
  color: var(--fg);
  text-decoration: none;
}

.brand-logo {
  width: 28px;
  height: 28px;
  border-radius: 22%;
}

.topnav nav a {
  color: var(--muted);
  font-size: 14px;
  margin-left: 18px;
}

.topnav nav a:hover {
  color: var(--accent);
}

/* Hero (landing only) */
.hero {
  text-align: center;
  padding: 64px 0 24px;
}

.hero-logo {
  width: 84px;
  height: 84px;
  border-radius: 22%;
  display: block;
  margin: 0 auto 20px;
  box-shadow: var(--shadow-md);
}

.hero h1 {
  margin: 0 0 8px;
  font-size: 36px;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.tagline {
  color: var(--muted);
  font-size: 17px;
  margin: 0;
}

/* Link cards */
.links {
  display: grid;
  gap: 12px;
  padding: 32px 0 48px;
}

.link-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--fg);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.link-card:hover {
  text-decoration: none;
  color: var(--fg);
  border-color: var(--accent);
  transform: translateY(-1px);
}

.link-card .link-text {
  display: block;
}

.link-card .link-title {
  display: block;
  font-weight: 600;
  font-size: 16px;
  margin-bottom: 2px;
}

.link-card .link-desc {
  display: block;
  color: var(--muted);
  font-size: 14px;
}

.link-card .chev {
  color: var(--muted);
  font-size: 20px;
  line-height: 1;
}

/* Legal article */
.legal {
  padding: 32px 0 48px;
}

.legal h1 {
  font-size: 32px;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
  font-weight: 700;
}

.legal .meta {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 24px;
}

.legal h2 {
  font-size: 21px;
  margin: 40px 0 12px;
  letter-spacing: -0.01em;
  font-weight: 600;
  scroll-margin-top: 80px;
}

.legal h3 {
  font-size: 17px;
  margin: 24px 0 8px;
  font-weight: 600;
}

.legal p,
.legal li {
  font-size: 16px;
}

.legal ul,
.legal ol {
  padding-left: 22px;
}

.legal li {
  margin-bottom: 6px;
}

/* Table of contents */
.toc {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 0 0 32px;
}

.toc-label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 8px;
}

.toc ol {
  margin: 0;
  padding-left: 20px;
  font-size: 14px;
  color: var(--muted);
}

.toc ol li {
  margin-bottom: 4px;
}

.toc a {
  color: var(--fg);
}

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

/* Site footer */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 32px;
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 13px;
}

.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.site-footer a {
  color: var(--muted);
  margin-left: 14px;
}

.site-footer a:first-of-type {
  margin-left: 0;
}

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

@media (max-width: 540px) {
  .topnav nav a {
    margin-left: 12px;
  }
  .hero {
    padding: 48px 0 16px;
  }
  .hero h1 {
    font-size: 30px;
  }
  .legal h1 {
    font-size: 26px;
  }
  .legal h2 {
    font-size: 19px;
  }
}