/* Set 2: teal sticky left rail, row-based content, no cards */
:root {
  --teal: #0d7377;
  --teal-d: #095456;
  --cyan: #14919b;
  --ice: #e8f6f6;
  --bg: #f3fafa;
  --ink: #163032;
  --muted: #4a6a6c;
  --line: #b7d4d6;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: auto; }
body {
  font-family: system-ui, "Segoe UI", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.7;
}
.layout {
  display: flex;
  min-height: 100vh;
  align-items: stretch;
}
.rail {
  width: 248px;
  flex: 0 0 248px;
  background: var(--teal-d);
  color: #e7f7f7;
  padding: 28px 20px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 22px;
  margin-bottom: 28px;
}
.brand svg { color: #7ee0e6; }
.nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.nav a {
  display: block;
  color: #c5e8ea;
  text-decoration: none;
  padding: 10px 12px;
  border-left: 3px solid transparent;
}
.nav a.current {
  background: rgba(255,255,255,0.08);
  border-left-color: #7ee0e6;
  color: #fff;
}
.rail-note {
  margin-top: 32px;
  font-size: 13px;
  color: #9fd4d7;
  line-height: 1.6;
}
.main { flex: 1; min-width: 0; }
.hero {
  background: var(--teal);
  color: #fff;
  padding: 40px 40px 44px;
}
.hero h1 {
  font-size: 30px;
  font-weight: 750;
  line-height: 1.35;
  max-width: 760px;
}
.hero .lead { margin: 14px 0 22px; max-width: 700px; color: #d8f4f5; }
.btn {
  display: inline-block;
  background: #fff;
  color: var(--teal-d);
  text-decoration: none;
  font-weight: 700;
  padding: 12px 22px;
  border-radius: 4px;
}
.btn-line {
  display: inline-block;
  margin-left: 14px;
  color: #fff;
  text-decoration: none;
  border: 1px solid #b6e8eb;
  padding: 11px 18px;
  border-radius: 4px;
}
.hero-meta { margin-top: 16px; font-size: 13px; color: #c7ecee; }
.content { padding: 8px 40px 48px; max-width: 920px; }
.block { padding: 28px 0 8px; border-top: 1px solid var(--line); }
.block:first-child { border-top: 0; }
.block h2 {
  font-size: 22px;
  color: var(--teal-d);
  margin-bottom: 12px;
}
.block p { margin-bottom: 12px; }
.block ul, .block ol { margin: 0 0 12px 1.2em; }
.block li { margin-bottom: 7px; }
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li {
  position: relative;
  padding: 0 0 18px 28px;
  border-left: 2px solid var(--cyan);
  margin-left: 8px;
}
.timeline li::before {
  content: "";
  width: 10px;
  height: 10px;
  background: var(--cyan);
  border-radius: 50%;
  position: absolute;
  left: -6px;
  top: 6px;
}
.row-list { list-style: none; }
.row-list li {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.row-list svg { color: var(--teal); flex: 0 0 28px; margin-top: 3px; }
.note {
  background: var(--ice);
  padding: 12px 14px;
  border: 1px dashed var(--cyan);
  color: var(--muted);
  margin: 12px 0;
}
.faq-list { list-style: none; counter-reset: q; }
.faq-list li {
  padding: 14px 0 14px 42px;
  position: relative;
  border-bottom: 1px solid var(--line);
}
.faq-list li::before {
  counter-increment: q;
  content: counter(q, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 16px;
  color: var(--cyan);
  font-weight: 700;
  font-size: 13px;
}
.faq-list h3 { font-size: 16px; margin-bottom: 6px; }
.site-footer {
  background: #08393b;
  color: #b9d5d6;
  padding: 28px 40px 36px;
  font-size: 13px;
}
.footer-nav { list-style: none; display: flex; gap: 18px; margin-bottom: 12px; }
.footer-nav a { color: #e7f7f7; text-decoration: none; }
.footer-nav a.current { text-decoration: underline; }
.safe { color: #d7f1c9; margin: 10px 0; }
@media (max-width: 860px) {
  .layout { display: block; }
  .rail { position: relative; height: auto; width: auto; }
  .nav { flex-direction: row; flex-wrap: wrap; }
  .hero, .content, .site-footer { padding-left: 18px; padding-right: 18px; }
  .btn-line { display: inline-block; margin: 10px 0 0; }
}