:root {
  --ink: #1d1d1f;
  --ink-2: #6e6e73;
  --ink-3: #86868b;
  --line: #d2d2d7;
  --surface: #f5f5f7;
  --canvas: #ffffff;
  --accent: #0071e3;
  --grad: linear-gradient(120deg, #0071e3, #34c759);
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f5f5f7;
    --ink-2: #a1a1a6;
    --ink-3: #7c7c82;
    --line: #3a3a3c;
    --surface: #161618;
    --canvas: #000000;
    --accent: #2997ff;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 980px; margin: 0 auto; padding: 0 22px; }

header.top {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--canvas) 80%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 60%, transparent);
}
header.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 52px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 600; letter-spacing: -0.01em; }
.brand:hover { text-decoration: none; }
.mark { width: 24px; height: 24px; border-radius: 7px; background: var(--grad); display: inline-block; }
nav a { color: var(--ink-2); font-size: 14px; margin-left: 22px; }
nav a:hover { color: var(--ink); text-decoration: none; }

.hero { padding: 96px 0 72px; text-align: center; }
.eyebrow { color: var(--ink-3); font-weight: 600; font-size: 15px; margin: 0 0 10px; }
h1 { font-size: clamp(40px, 7vw, 72px); line-height: 1.05; letter-spacing: -0.035em; margin: 0; font-weight: 700; }
h1 .grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lede { max-width: 640px; margin: 20px auto 0; font-size: clamp(19px, 2.4vw, 23px); color: var(--ink-2); }
.cta { display: inline-block; margin-top: 32px; background: var(--accent); color: #fff; padding: 12px 24px; border-radius: 999px; font-weight: 500; }
.cta:hover { text-decoration: none; filter: brightness(1.08); }

section { padding: 56px 0; }
h2 { font-size: clamp(28px, 4vw, 40px); letter-spacing: -0.025em; margin: 0 0 8px; }
.sub { color: var(--ink-2); margin: 0 0 32px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.card { background: var(--surface); border-radius: 22px; padding: 28px; }
.card h3 { margin: 0 0 6px; font-size: 19px; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--ink-2); font-size: 15px; }

.contact { background: var(--surface); border-radius: 28px; padding: 40px; }
.contact dl { display: grid; grid-template-columns: max-content 1fr; gap: 10px 28px; margin: 24px 0 0; }
.contact dt { color: var(--ink-3); font-size: 14px; }
.contact dd { margin: 0; }

footer { border-top: 1px solid var(--line); margin-top: 56px; padding: 28px 0 48px; color: var(--ink-3); font-size: 13px; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
footer a { color: var(--ink-2); margin-left: 18px; }
footer a:first-child { margin-left: 0; }

/* Legal pages */
.doc { max-width: 720px; padding-top: 64px; padding-bottom: 24px; }
.doc h1 { font-size: clamp(34px, 5vw, 48px); }
.doc .updated { color: var(--ink-3); margin: 10px 0 36px; font-size: 15px; }
.doc h2 { font-size: 22px; margin: 36px 0 8px; letter-spacing: -0.015em; }
.doc p, .doc li { color: var(--ink); }
.doc ul { padding-left: 22px; }
.doc li { margin: 4px 0; }

@media (max-width: 560px) {
  nav a { margin-left: 14px; }
  .hero { padding: 64px 0 48px; }
  .contact { padding: 28px 22px; }
  .contact dl { grid-template-columns: 1fr; gap: 2px; }
  .contact dd { margin-bottom: 12px; }
}