/* 第1套：场景驱动 · 单栏青绿 · 左描边区块 */
:root {
  --ink: #16302c;
  --teal: #0b6e6e;
  --teal-deep: #084f4f;
  --sand: #f3f6f4;
  --line: #d5e0dc;
  --card: #ffffff;
  --warn: #b45309;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--sand);
  font: 16px/1.75 "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
.topbar {
  background: #fff;
  border-bottom: 3px solid var(--teal);
}
.topbar-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 14px 20px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--teal-deep);
  text-decoration: none;
  font: 700 22px/1 Georgia, "Songti SC", serif;
}
.brand svg { flex: 0 0 28px; }
.nav-row {
  display: flex;
  gap: 4px;
  margin-top: 12px;
}
.nav-row a {
  padding: 10px 16px 12px;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 3px solid transparent;
}
.nav-row a.now {
  color: var(--teal);
  border-bottom-color: var(--teal);
  font-weight: 700;
}
.hero-entry {
  background: linear-gradient(160deg, #0b6e6e 0%, #126b5a 70%);
  color: #fff;
  padding: 48px 20px 56px;
}
.hero-entry .wrap { max-width: 980px; margin: 0 auto; }
.hero-entry h1 {
  margin: 0 0 16px;
  font: 700 32px/1.35 Georgia, "Songti SC", serif;
}
.hero-entry p { margin: 0 0 14px; max-width: 42em; }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.btn-main, .btn-sub {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 700;
}
.btn-main { background: #ffd166; color: #16302c; }
.btn-sub { background: transparent; color: #fff; border: 1px solid #fff; }
.page {
  max-width: 980px;
  margin: 0 auto;
  padding: 8px 20px 48px;
}
.block {
  background: var(--card);
  margin: 22px 0;
  padding: 22px 24px 26px;
  border-left: 6px solid var(--teal);
  box-shadow: 0 1px 0 var(--line);
}
.block h2 {
  margin: 0 0 12px;
  font: 700 22px/1.4 Georgia, "Songti SC", serif;
  color: var(--teal-deep);
}
.scene-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.scene-card {
  background: #fff;
  padding: 18px;
  border: 1px solid var(--line);
}
.scene-card h3 { margin: 0 0 8px; font-size: 17px; }
.faq dt { font-weight: 700; margin: 14px 0 4px; color: var(--teal-deep); }
.faq dd { margin: 0 0 8px; }
.foot {
  background: #12332f;
  color: #d7e8e4;
  padding: 28px 20px 36px;
  font-size: 13px;
}
.foot .wrap { max-width: 980px; margin: 0 auto; }
.foot a { color: #ffd166; }
.safe { color: #b6f0d8; margin-bottom: 10px; }
.dl-mini {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0;
}
.dl-mini a {
  background: var(--teal);
  color: #fff;
  padding: 8px 12px;
  text-decoration: none;
  border-radius: 3px;
  font-size: 14px;
}
table.plain { width: 100%; border-collapse: collapse; }
table.plain th, table.plain td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
}
@media (max-width: 720px) {
  .scene-grid { grid-template-columns: 1fr; }
  .hero-entry h1 { font-size: 24px; }
}