:root {
  --ink: #1d1b19;
  --muted: #6b665f;
  --line: #e6e1d9;
  --paper: #faf8f4;
  --card: #ffffff;
  --accent: #a3122a;
  --accent-wash: #fbeaed;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f1eee9;
    --muted: #a8a29a;
    --line: #34312d;
    --paper: #17191d;
    --card: #202328;
    --accent: #e0566c;
    --accent-wash: #3a1d23;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", "Noto Sans TC", sans-serif;
}
a { color: var(--accent); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }
header.top { border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; color: var(--ink); text-decoration: none; }
.brand img { width: 30px; height: 30px; }
nav.links { display: flex; gap: 18px; font-size: 15px; }
nav.links a { color: var(--muted); text-decoration: none; }
nav.links a.cta { color: #fff; background: var(--accent); padding: 7px 14px; border-radius: 8px; }
.hero { padding: 72px 0 56px; }
.hero h1 { font-size: clamp(32px, 5vw, 52px); line-height: 1.12; margin: 0 0 18px; letter-spacing: -0.02em; max-width: 760px; }
.hero p { font-size: 19px; color: var(--muted); max-width: 640px; margin: 0 0 28px; }
.pill { display: inline-block; background: var(--accent-wash); color: var(--accent); font-weight: 600; font-size: 13px; padding: 4px 10px; border-radius: 999px; margin-bottom: 18px; }
.button { display: inline-block; background: var(--accent); color: #fff; text-decoration: none; padding: 12px 20px; border-radius: 10px; font-weight: 600; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; padding-bottom: 56px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 22px; }
.card h3 { margin: 0 0 8px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
section.steps { padding: 8px 0 64px; }
section.steps h2 { font-size: 26px; margin: 0 0 18px; }
section.steps ol { margin: 0; padding-left: 22px; color: var(--muted); }
section.steps li { margin-bottom: 8px; }
section.steps li b { color: var(--ink); }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; padding: 24px 0 40px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; }
footer a { color: var(--muted); }
article.doc { max-width: 760px; padding: 48px 20px 64px; margin: 0 auto; }
article.doc h1 { font-size: 32px; line-height: 1.2; margin: 0 0 6px; }
article.doc .meta { color: var(--muted); font-size: 14px; margin: 0 0 28px; }
article.doc h2 { font-size: 21px; margin: 32px 0 8px; }
article.doc table { border-collapse: collapse; width: 100%; font-size: 14.5px; }
article.doc th, article.doc td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
.note { background: var(--accent-wash); border-radius: 10px; padding: 12px 16px; font-size: 14.5px; }