:root {
  color-scheme: light;
  --ink: #172016;
  --muted: #586457;
  --paper: #f5f7ef;
  --card: #ffffff;
  --line: #dce3d5;
  --accent: #527f13;
  --accent-soft: #e8f7cf;
  --blue: #126a7a;
  --warning: #8a4d00;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); line-height: 1.75; }
a { color: var(--blue); }
.hero { padding: 34px max(24px,calc((100% - 1120px)/2)); color: #f7faef; background: radial-gradient(circle at 80% 0,rgba(185,255,86,.2),transparent 36%),#11162a; }
.back { display: inline-block; margin-bottom: 30px; color: #bcecff; font-size: 13px; font-weight: 750; text-decoration: none; }
.hero-mark { display: grid; place-items: center; width: 52px; height: 52px; border-radius: 15px; color: #111; background: #b9ff56; font-size: 24px; font-weight: 950; transform: rotate(-4deg); }
.kicker { margin: 18px 0 4px; color: #b9ff56; font-size: 11px; font-weight: 900; letter-spacing: .16em; }
.hero h1 { max-width: 760px; margin: 0; font-size: clamp(32px,6vw,58px); line-height: 1.08; letter-spacing: -.04em; }
.lead { max-width: 720px; margin: 18px 0 24px; color: #cbd2c6; font-size: 17px; }
.offline-note { max-width: 720px; display: flex; gap: 12px; padding: 14px 16px; border: 1px solid rgba(185,255,86,.25); border-radius: 14px; background: rgba(185,255,86,.07); font-size: 13px; }
.offline-note b { flex: 0 0 auto; color: #b9ff56; }
.layout { width: min(1160px,calc(100% - 36px)); margin: 0 auto; display: grid; grid-template-columns: 230px minmax(0,1fr); gap: 34px; align-items: start; }
.toc { position: sticky; top: 20px; display: grid; gap: 3px; margin-top: 34px; padding: 17px; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.9); }
.toc strong { margin: 0 8px 8px; font-size: 12px; }
.toc a { padding: 7px 8px; border-radius: 8px; color: var(--muted); text-decoration: none; font-size: 12px; }
.toc a:hover { color: var(--ink); background: var(--accent-soft); }
main { min-width: 0; padding: 10px 0 60px; }
section { scroll-margin-top: 20px; padding: 38px 0; border-bottom: 1px solid var(--line); }
.section-number { margin: 0; color: var(--accent); font-size: 11px; font-weight: 900; letter-spacing: .18em; }
h2 { margin: 3px 0 20px; font-size: clamp(25px,4vw,38px); line-height: 1.2; letter-spacing: -.025em; }
h3 { margin: 25px 0 5px; font-size: 17px; }
p { color: var(--muted); }
ul, ol { padding-left: 24px; }
li { margin: 8px 0; }
.steps { list-style: none; padding: 0; counter-reset: step; }
.steps li { counter-increment: step; display: grid; grid-template-columns: 40px minmax(0,1fr); gap: 0 12px; margin: 10px 0; padding: 15px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
.steps li:before { content: counter(step); grid-row: 1/3; display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; color: #294600; background: #b9ff56; font-weight: 900; }
.steps b, .steps span { display: block; }
.steps span { color: var(--muted); font-size: 13px; }
.example, .tip, .warning { margin: 20px 0; padding: 16px 18px; border-radius: 14px; }
.example { border-left: 4px solid var(--accent); background: var(--accent-soft); }
.example p { margin: 5px 0 0; color: #34442f; }
.tip { color: #31505a; background: #e6f5f7; }
.warning { display: flex; gap: 10px; color: var(--warning); background: #fff0d9; }
.warning b { flex: 0 0 auto; }
.card-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }
.card-grid article { padding: 16px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
.card-grid article > span { color: var(--accent); font-size: 23px; }
.card-grid h3 { margin: 8px 0 2px; }
.card-grid p { margin: 0; font-size: 13px; }
table { width: 100%; border-collapse: collapse; border: 1px solid var(--line); background: var(--card); }
th, td { padding: 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; font-size: 13px; }
th { color: #3d493c; background: #edf2e8; }
.status-list { display: grid; gap: 8px; }
.status-list div { display: grid; grid-template-columns: 190px 1fr; padding: 13px 15px; border: 1px solid var(--line); border-radius: 12px; background: var(--card); }
.status-list dt { font-weight: 800; }
.status-list dd { margin: 0; color: var(--muted); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.split > div { padding: 8px 18px 16px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
.page-footer { display: flex; justify-content: space-between; gap: 20px; padding: 28px max(24px,calc((100% - 1120px)/2)); color: #c5cebf; background: #11162a; font-size: 12px; }
.page-footer a { color: #b9ff56; font-weight: 800; }
@media (max-width: 800px) {
  .hero { padding: 24px 20px 30px; }
  .back { margin-bottom: 22px; }
  .offline-note, .warning { display: block; }
  .offline-note b, .warning b { display: block; margin-bottom: 4px; }
  .layout { width: min(100% - 28px,720px); display: block; }
  .toc { position: static; grid-template-columns: repeat(2,1fr); margin-top: 18px; }
  .toc strong { grid-column: 1/-1; }
  section { padding: 32px 0; }
  .card-grid { grid-template-columns: 1fr 1fr; }
  .status-list div { grid-template-columns: 1fr; gap: 3px; }
  .split { grid-template-columns: 1fr; }
  table, thead, tbody, tr, th, td { display: block; }
  thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  tr { padding: 10px 14px; border-bottom: 1px solid var(--line); }
  td { padding: 3px 0; border: 0; }
  td:first-child { color: var(--accent); font-weight: 900; }
  .page-footer { display: grid; padding: 24px 20px; }
}
@media (max-width: 440px) {
  .hero h1 { font-size: 34px; }
  .lead { font-size: 15px; }
  .card-grid { grid-template-columns: 1fr; }
  .toc { grid-template-columns: 1fr 1fr; padding: 12px; }
  .toc a { padding: 6px; }
}
@media print {
  .back, .toc { display: none; }
  .hero { color: #111; background: #fff; }
  .hero p { color: #333; }
  .layout { display: block; width: 100%; }
  section { break-inside: avoid; }
  .page-footer { color: #111; background: #fff; }
}