:root {
  --ink: #1d2430;
  --slate: #243044;
  --cream: #f7f1e6;
  --white: #fffdf9;
  --amber: #c98412;
  --line: #e4d8c6;
  --muted: #5e6673;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--cream);
  font-family: Georgia, "Songti SC", "Microsoft YaHei", serif;
  font-size: 18px;
  line-height: 1.85;
}
.topbar {
  background: var(--slate);
  color: #f7f1e6;
  text-align: center;
  padding: 22px 16px 16px;
}
.brand { color: #fff; text-decoration: none; font-size: 26px; font-weight: 700; display: inline-block; margin-bottom: 10px; }
.topbar nav { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }
.topbar nav a {
  color: #f7f1e6;
  text-decoration: none;
  border: 1px solid rgba(247,241,230,0.35);
  padding: 6px 14px;
  border-radius: 999px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 15px;
}
.topbar nav a.on { background: var(--amber); border-color: var(--amber); color: #1d1608; }
.band { padding: 36px 8vw; }
.band.alt { background: var(--slate); color: #f6f0e6; }
.band.alt a { color: #f0c36a; }
.band.plain { background: var(--white); }
.inner { max-width: 860px; margin: 0 auto; }
h1 { font-size: 40px; line-height: 1.3; margin: 0 0 12px; font-weight: 700; }
h2 { font-size: 28px; line-height: 1.4; margin: 0 0 12px; }
h3 { font-size: 20px; margin: 0 0 6px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 16px 0; }
.btn {
  display: inline-block;
  background: var(--amber);
  color: #1d1608;
  text-decoration: none;
  padding: 12px 18px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-weight: 700;
}
.btn.ghost { background: transparent; color: var(--amber); box-shadow: inset 0 0 0 2px var(--amber); }
.band.alt .btn.ghost { color: #f6f0e6; box-shadow: inset 0 0 0 2px #f6f0e6; }
.feature-row, .pair { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.card {
  background: rgba(255,255,255,0.6);
  border-top: 4px solid var(--amber);
  padding: 12px 14px 2px;
}
.band.alt .card { background: rgba(255,255,255,0.06); }
.timeline { border-left: 3px solid var(--amber); margin-left: 8px; padding-left: 16px; }
.timeline article { margin: 0 0 16px; }
table { width: 100%; border-collapse: collapse; font-family: "Segoe UI", "Microsoft YaHei", sans-serif; font-size: 16px; }
th, td { border-bottom: 1px solid var(--line); text-align: left; padding: 8px 6px; vertical-align: top; }
.faq-item { padding: 8px 0 12px; border-bottom: 1px dashed var(--line); }
.site-foot {
  background: #1a2130;
  color: #d9d0c3;
  padding: 28px 8vw 40px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 14px;
}
.site-foot a { color: #f0c36a; }
time { font-family: "Segoe UI", "Microsoft YaHei", sans-serif; font-size: 14px; color: var(--muted); }
.band.alt time { color: #e6d3b0; }
svg { vertical-align: -4px; }
@media (max-width: 800px) {
  .feature-row, .pair { grid-template-columns: 1fr; }
  h1 { font-size: 32px; }
  .band { padding: 28px 18px; }
}