:root {
  --coral: #ff6b4a;
  --ink: #1e2340;
  --cream: #fff4ec;
  --mint: #7fd6c2;
  --text: #1e2340;
  --muted: #5b6075;
  --card: #ffffff;
  --bg: #fffaf6;
  --line: #f0e4da;
}
@media (prefers-color-scheme: dark) {
  :root {
    --text: #f3f1ee;
    --muted: #b4b6c4;
    --card: #262b48;
    --bg: #1e2340;
    --line: #353b5e;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.75 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px 64px; }
header { padding: 40px 0 8px; }
.brand { display: flex; align-items: center; gap: 14px; }
.logo {
  width: 56px; height: 56px; border-radius: 14px; background: var(--ink);
  display: grid; place-items: center; flex: none;
}
.logo svg { width: 34px; height: 34px; }
h1 { font-size: 28px; line-height: 1.3; margin: 0; }
.tagline { color: var(--muted); margin: 2px 0 0; }
nav { margin: 20px 0 8px; display: flex; flex-wrap: wrap; gap: 8px; }
nav a {
  color: var(--coral); text-decoration: none; border: 1px solid var(--line);
  padding: 4px 14px; border-radius: 999px; font-size: 14px; background: var(--card);
}
h2 { font-size: 21px; margin: 40px 0 8px; padding-top: 8px; }
h3 { font-size: 17px; margin: 24px 0 4px; }
p, li { color: var(--text); }
.muted { color: var(--muted); font-size: 14px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 18px 20px; margin: 14px 0;
}
.card h3 { margin-top: 0; }
a { color: var(--coral); }
table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 8px 0; }
th, td { text-align: left; vertical-align: top; padding: 10px 8px; border-bottom: 1px solid var(--line); }
th { font-weight: 600; }
.lang { margin-top: 56px; padding-top: 8px; border-top: 1px solid var(--line); }
footer { margin-top: 48px; color: var(--muted); font-size: 13px; }
@media (max-width: 560px) {
  h1 { font-size: 24px; }
  table, thead, tbody, tr, th, td { display: block; }
  thead { display: none; }
  td { border: none; padding: 2px 0; }
  tr { border-bottom: 1px solid var(--line); padding: 10px 0; }
  td:first-child { font-weight: 600; }
}