:root {
  --paper: #f3efe4;
  --ink: #1c1915;
  --muted: #5e584e;
  --line: #ddd4c3;
  --rust: #9c3b1e;
  --card: #fffdf8;
  --rail: #1b2430;
  --rail-soft: #d9d3c7;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.8;
}
a { color: var(--rust); }
.rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 228px;
  background: var(--rail);
  color: #f6f1e7;
  padding: 28px 18px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  z-index: 5;
}
.brand {
  color: #fff;
  text-decoration: none;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.rail nav { display: flex; flex-direction: column; gap: 4px; }
.rail nav a {
  color: var(--rail-soft);
  text-decoration: none;
  padding: 10px 12px;
  border-left: 3px solid transparent;
}
.rail nav a.on,
.rail nav a[aria-current="page"] {
  color: #fff;
  border-left-color: #e7b59a;
  background: rgba(255,255,255,0.05);
}
.sheet { margin-left: 228px; }
.hero, .block { padding: 42px 7vw 10px; max-width: 980px; }
.hero h1 {
  font-family: Palatino, "Palatino Linotype", "Songti SC", serif;
  font-size: 38px;
  line-height: 1.28;
  margin: 0 0 18px;
  font-weight: 700;
}
.lead { font-size: 18px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 8px 0 18px; }
.btn {
  display: inline-block;
  background: var(--rust);
  color: #fff;
  text-decoration: none;
  padding: 12px 18px;
  border-radius: 2px;
  font-weight: 650;
}
.btn.alt { background: transparent; color: var(--rust); border: 1px solid var(--rust); }
.points { margin: 8px 0 0; padding-left: 18px; }
.points li { margin: 4px 0; }
.block { border-top: 1px solid var(--line); padding-top: 28px; margin-top: 18px; }
.block h2 {
  font-family: Palatino, "Palatino Linotype", "Songti SC", serif;
  font-size: 28px;
  line-height: 1.35;
  margin: 0 0 12px;
}
.kicker { color: var(--rust); font-size: 13px; letter-spacing: 0.14em; margin: 0 0 6px; }
.stack { display: grid; gap: 14px; }
.item, .faq-item, .news-item, .step, .note {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 14px 16px 6px;
}
.item h3, .faq-item h3, .news-item h3, .step h3 { margin: 0 0 6px; font-size: 18px; }
.item svg, .hero svg { vertical-align: -4px; margin-right: 6px; color: var(--rust); }
table { width: 100%; border-collapse: collapse; background: var(--card); margin: 12px 0 18px; }
th, td { border: 1px solid var(--line); text-align: left; padding: 10px 12px; vertical-align: top; }
th { background: #efe8da; font-weight: 650; }
.site-foot {
  margin-top: 28px;
  padding: 28px 7vw 48px;
  color: var(--muted);
  font-size: 14px;
  border-top: 1px solid var(--line);
  max-width: 980px;
}
.site-foot a { color: var(--ink); }
time { color: var(--muted); font-size: 14px; }
@media (max-width: 860px) {
  .rail { position: static; width: auto; flex-direction: row; flex-wrap: wrap; align-items: center; }
  .rail nav { flex-direction: row; flex-wrap: wrap; }
  .sheet { margin-left: 0; }
  .hero h1 { font-size: 30px; }
}