:root {
  --teal: #0d7377;
  --teal-deep: #095456;
  --coral: #e85a4f;
  --bg: #f7fbfb;
  --ink: #173033;
  --muted: #5b7476;
  --line: #cfe3e4;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Trebuchet MS", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.72;
  font-size: 16px;
}

.shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.side {
  background: var(--teal-deep);
  color: #e7f4f4;
  padding: 22px 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  text-decoration: none;
  font-weight: 800;
  margin-bottom: 22px;
}
.side nav { display: flex; flex-direction: column; gap: 6px; }
.side nav a {
  color: #c5e4e4;
  text-decoration: none;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
}
.side nav a.current { background: var(--coral); color: #fff; font-weight: 700; }
.side .note { margin-top: 24px; font-size: 12px; color: #9cc; }

.content { padding: 28px 36px 48px; }

.hero {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px;
  margin-bottom: 22px;
}
.hero h1 { font-size: 30px; line-height: 1.35; margin-bottom: 12px; }
.hero .lead { color: var(--muted); margin-bottom: 16px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--coral);
  color: #fff;
  text-decoration: none;
  padding: 12px 16px;
  border-radius: 10px;
  font-weight: 800;
  margin: 0 8px 8px 0;
}
.btn-alt {
  background: var(--teal);
}

.timeline { position: relative; }
.block {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 16px;
  margin-bottom: 18px;
}
.mark {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: #dff3f3;
  color: var(--teal);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--teal);
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px 22px;
}
.card h2 { font-size: 20px; color: var(--teal-deep); margin-bottom: 10px; }
p { margin-bottom: 10px; }
ul, ol { margin: 0 0 10px 20px; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 10px 0 12px;
  font-size: 14px;
}
th, td { border-bottom: 1px solid var(--line); padding: 8px; text-align: left; }
th { color: var(--teal-deep); }

.dl-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 10px 0;
}
.dl-grid a {
  display: block;
  background: #e7f6f6;
  color: var(--teal-deep);
  text-decoration: none;
  padding: 12px;
  border-radius: 10px;
  font-weight: 700;
}

.faq dt { font-weight: 800; color: var(--coral); margin-top: 12px; }
.faq dd { margin: 4px 0 0; color: var(--muted); }

footer {
  margin-top: 12px;
  font-size: 12.5px;
  color: var(--muted);
}
.safe { color: var(--teal-deep); font-weight: 700; }

@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  .side { padding-bottom: 12px; }
  .side nav { flex-direction: row; flex-wrap: wrap; }
  .content { padding: 18px 14px 36px; }
  .block { grid-template-columns: 1fr; }
  .dl-grid { grid-template-columns: 1fr; }
}