:root {
  --ink: #142526;
  --teal: #0c4a4e;
  --mint: #e7f4f2;
  --amber: #c2410c;
  --line: #c9e0dc;
  --paper: #f3faf8;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16.5px;
  line-height: 1.72;
}
a { color: #0f5c56; }
.shell { display: flex; min-height: 100vh; }
.rail {
  width: 228px;
  flex: 0 0 228px;
  background: var(--teal);
  color: #e7f6f4;
  padding: 22px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.brand {
  display: flex;
  gap: 8px;
  align-items: center;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  margin-bottom: 22px;
}
.rail nav { display: flex; flex-direction: column; gap: 6px; }
.rail nav a {
  color: #d7efec;
  text-decoration: none;
  padding: 8px 10px;
  border-left: 3px solid transparent;
}
.rail nav a.on { border-left-color: #f6c39a; background: rgba(255,255,255,0.06); color: #fff; }
.content { flex: 1; min-width: 0; }
.hero {
  padding: 28px 32px 18px;
  background:
    linear-gradient(180deg, rgba(12,74,78,0.06), rgba(12,74,78,0)),
    repeating-linear-gradient(90deg, transparent, transparent 18px, rgba(12,74,78,0.04) 18px, rgba(12,74,78,0.04) 19px);
  border-bottom: 1px solid var(--line);
}
.hero h1 { margin: 0 0 10px; font-size: 32px; line-height: 1.3; color: var(--teal); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 14px; padding: 0; list-style: none; }
.chips li { background: #fff; border: 1px solid var(--line); padding: 4px 10px; }
.btn {
  display: inline-block;
  background: var(--amber);
  color: #fff;
  text-decoration: none;
  padding: 9px 14px;
  margin: 4px 8px 4px 0;
  font-weight: 700;
}
.btn.line { background: #fff; color: var(--teal); border: 1px solid var(--teal); }
.wrap { padding: 8px 32px 40px; max-width: 980px; }
.block { margin: 22px 0; }
.block h2 {
  margin: 0 0 12px;
  font-size: 22px;
  color: var(--teal);
  background: var(--mint);
  padding: 8px 12px;
}
.block p { margin: 0 0 12px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.card {
  background: #fff;
  border-top: 4px solid var(--teal);
  padding: 12px 14px 4px;
  box-shadow: 0 1px 0 rgba(12,74,78,0.08);
}
.card h3 { margin: 0 0 6px; font-size: 17px; }
ol.steps { margin: 0 0 12px; padding-left: 1.2em; }
ol.steps li { margin: 0 0 8px; }
table { width: 100%; border-collapse: collapse; margin: 8px 0 14px; background: #fff; }
th, td { border: 1px solid var(--line); padding: 8px; text-align: left; vertical-align: top; }
th { background: var(--teal); color: #f3faf8; }
.note { border-left: 4px solid var(--amber); background: #fff7ed; padding: 10px 12px; margin: 8px 0 14px; }
.news { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.news li { background: #fff; padding: 10px 12px; border: 1px solid var(--line); }
.news h3 { margin: 0 0 4px; font-size: 16px; }
.news time { color: var(--amber); font-size: 13px; }
.faq dt { font-weight: 700; margin-top: 14px; color: var(--teal); }
.faq dd { margin: 4px 0 0; }
.foot { background: #083538; color: #d5ece9; padding: 18px 32px 26px; font-size: 14px; }
.foot a { color: #f6c39a; }
.foot p { margin: 0 0 8px; }
@media (max-width: 860px) {
  .shell { display: block; }
  .rail { width: auto; height: auto; position: static; }
  .rail nav { flex-direction: row; flex-wrap: wrap; }
  .split, .news { grid-template-columns: 1fr; }
  .wrap, .hero, .foot { padding-left: 16px; padding-right: 16px; }
}