:root {
  --bg: #faf7f2;
  --card: #ffffff;
  --ink: #1d2230;
  --soft: #5b6273;
  --line: #e6e1d8;
  --accent: #2f6fd6;
  --accent2: #d6452f;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12151c;
    --card: #1a1e28;
    --ink: #eef0f5;
    --soft: #a3aabb;
    --line: #2a2f3c;
    --accent: #7aa7ff;
    --accent2: #ff8a75;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", Roboto, sans-serif;
}
a { color: var(--accent); }
.top, main, footer { max-width: 880px; margin: 0 auto; padding: 0 20px; }
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 22px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 700; font-size: 20px; letter-spacing: -.01em; }
.mark { width: 42px; height: 28px; fill: none; stroke-width: 3.2; }
.mark circle:first-child { stroke: var(--accent); }
.mark circle:last-child { stroke: var(--accent2); }
nav { display: flex; gap: 18px; }
nav a { color: var(--soft); text-decoration: none; font-size: 15px; }
nav a:hover { color: var(--ink); }
.hero { padding: 64px 0 28px; }
h1 { font-size: clamp(32px, 6vw, 52px); line-height: 1.08; letter-spacing: -.03em; margin: 0 0 18px; max-width: 16ch; }
.lede { font-size: 19px; color: var(--soft); max-width: 62ch; margin: 0; }
section { padding: 28px 0; }
h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .12em; color: var(--soft); margin: 0 0 16px; }
h3 { font-size: 18px; margin: 0 0 4px; }
.apps { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.app { display: flex; gap: 18px; align-items: flex-start; background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 18px; }
.app img, .ph { width: 72px; height: 72px; border-radius: 16px; flex: none; }
.ph { display: grid; place-items: center; background: #2f6b4f; color: #f6f1e7; font-size: 22px; font-weight: 600; }
.app p { margin: 0; color: var(--soft); }
.app .links { margin-top: 8px; display: flex; gap: 16px; flex-wrap: wrap; font-size: 15px; }
.tag { font-size: 12px; font-weight: 600; color: var(--accent2); border: 1px solid currentColor; border-radius: 999px; padding: 1px 8px; margin-left: 6px; vertical-align: 2px; white-space: nowrap; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 22px; }
.grid p { margin: 0; color: var(--soft); }
footer { border-top: 1px solid var(--line); margin-top: 40px; padding-top: 18px; padding-bottom: 40px; color: var(--soft); font-size: 14px; }
.doc { max-width: 680px; padding-top: 40px; }
.doc h1 { font-size: 36px; }
.doc h2 { font-size: 18px; text-transform: none; letter-spacing: 0; color: var(--ink); margin-top: 28px; }
@media (max-width: 520px) {
  .app { flex-direction: column; }
  .hero { padding-top: 40px; }
}