:root {
  --ground: #f2f3f6;
  --card: #ffffff;
  --sunk: #eef0f3;
  --ink: #0c0e13;
  --muted: #555b69;
  --faint: #8a90a0;
  --rule: rgba(12, 14, 19, 0.08);
  --volt: #d7ff3f;
  --hero: #0c0e13;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ground: #0b0c10;
    --card: #17191f;
    --sunk: #23262e;
    --ink: #f4f5f7;
    --muted: #a3a8b5;
    --faint: #6e7381;
    --rule: rgba(255, 255, 255, 0.08);
    --hero: #1b1e25;
  }
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Helvetica Neue", sans-serif;
  background: var(--ground);
  color: var(--ink);
  line-height: 1.6;
}
.page { max-width: 680px; margin: 0 auto; padding: 32px 16px 56px; }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 40px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 17px; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.nav-links { display: flex; gap: 16px; font-size: 15px; flex-wrap: wrap; justify-content: flex-end; }
.nav-links a { color: var(--muted); text-decoration: none; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); }
h1 { font-weight: 700; font-size: 34px; line-height: 1.2; letter-spacing: -0.02em; margin-bottom: 8px; }
.lede { color: var(--muted); font-size: 17px; margin-bottom: 32px; }
h2 { font-size: 20px; font-weight: 700; margin: 32px 0 8px; }
p, li { font-size: 16px; color: var(--muted); margin-bottom: 12px; }
strong { color: var(--ink); font-weight: 600; }
ul { padding-left: 20px; }
li { margin-bottom: 8px; }
a { color: var(--ink); text-decoration-color: var(--faint); text-underline-offset: 3px; }
.card { background: var(--card); border-radius: 24px; padding: 20px 22px; margin: 16px 0; }
.card h2 { margin-top: 0; }
.summary { background: var(--hero); color: #fff; border-radius: 24px; padding: 20px 22px; margin-bottom: 24px; }
.summary p { color: rgba(255, 255, 255, 0.82); margin: 0; }
.summary strong { color: var(--volt); }
.hero { background: var(--hero); color: #fff; border-radius: 28px; padding: 32px 24px; margin-bottom: 24px; }
.hero img { width: 72px; height: 72px; border-radius: 19px; margin-bottom: 20px; }
.hero h1 { font-size: 38px; color: #fff; }
.hero p { color: rgba(255, 255, 255, 0.72); font-size: 17px; margin: 0; }
.hero .accent { color: var(--volt); }
.points { list-style: none; padding: 0; }
.points li { background: var(--card); border-radius: 20px; padding: 16px 18px; margin-bottom: 10px; }
.points strong { display: block; margin-bottom: 2px; }
.lang { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--rule); }
.footer { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--rule); }
.footer p { color: var(--faint); font-size: 13px; margin-bottom: 6px; }
.footer a { color: var(--muted); }
@media (max-width: 480px) {
  .nav { margin-bottom: 28px; }
  .nav-links { gap: 12px; font-size: 14px; }
  h1 { font-size: 28px; }
  .hero h1 { font-size: 30px; }
}