/* Set 2 — www: sticky sidebar + cream main, stacked accent rails */
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: Georgia, "Songti SC", "SimSun", "Microsoft YaHei", serif;
  background: #f3efe4;
  color: #24302c;
  font-size: 16.5px;
  line-height: 1.8;
  display: grid;
  grid-template-columns: 248px 1fr;
  min-height: 100vh;
}
a { color: #0d7377; }
a:hover { color: #095456; }
svg { display: block; }
.side {
  background: #0d7377;
  color: #e8f6f6;
  padding: 28px 20px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}
.brand {
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-weight: 700;
  font-size: 20px;
  color: #fff;
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 28px;
}
.brand svg { width: 28px; height: 28px; }
.side nav a {
  display: block;
  color: #d5eeee;
  text-decoration: none;
  padding: 10px 12px;
  border-left: 3px solid transparent;
  margin-bottom: 6px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
}
.side nav a:hover { background: rgba(255,255,255,.08); }
.side nav a.is-current {
  background: #14919b;
  border-left-color: #e8c872;
  color: #fff;
}
.side .note { margin-top: 32px; font-size: 13px; color: #c5e4e4; }

.main { min-width: 0; }
.hero {
  background: #165e5f;
  color: #f7f3e8;
  padding: 36px 48px 40px;
}
.hero h1 {
  font-size: 30px;
  line-height: 1.4;
  margin: 8px 0 16px;
}
.hero p { margin-bottom: 12px; max-width: 70ch; }
.dl-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.btn {
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  display: inline-block;
  background: #e8c872;
  color: #2a2208;
  text-decoration: none;
  padding: 10px 16px;
  font-weight: 700;
  border-radius: 999px;
}
.btn:hover { background: #f0d68a; color: #2a2208; }
.btn-line {
  background: transparent;
  color: #fff;
  border: 1px solid #e8c872;
}
.btn-line:hover { background: rgba(232,200,114,.15); color: #fff; }

.inner { padding: 36px 48px 20px; max-width: 980px; }
.block { margin-bottom: 36px; padding: 22px 24px 8px; background: #fffdf7; border-left: 6px solid #0d7377; }
.block h2 {
  font-size: 22px;
  color: #0d7377;
  margin-bottom: 12px;
  font-weight: 700;
}
.block p { margin-bottom: 12px; }
.block ul, .block ol { margin: 0 0 14px 22px; }
.block li { margin-bottom: 6px; }

.pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.tile {
  background: #fff;
  padding: 16px;
  border: 1px dashed #9bbbbb;
}
.tile h3 {
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  color: #0d7377;
  margin: 8px 0;
}
.tile svg { width: 32px; height: 32px; color: #0d7377; }

table { width: 100%; border-collapse: collapse; margin: 12px 0 16px; font-size: 15px; }
th, td { border-bottom: 1px solid #c9d6d2; padding: 8px 10px; text-align: left; }
th { color: #0d7377; font-family: "Segoe UI", "Microsoft YaHei", sans-serif; }

.faq ol { list-style: none; margin: 0; padding: 0; counter-reset: q; }
.faq li {
  counter-increment: q;
  margin-bottom: 16px;
  padding-left: 42px;
  position: relative;
}
.faq li::before {
  content: counter(q, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: "Segoe UI", sans-serif;
  color: #0d7377;
  font-weight: 700;
}
.faq h3 { font-size: 17px; margin-bottom: 6px; }

.site-footer {
  background: #214644;
  color: #d5e6e4;
  padding: 22px 48px 28px;
  font-size: 13px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
}
.site-footer p { margin-bottom: 8px; }

@media (max-width: 880px) {
  body { grid-template-columns: 1fr; }
  .side { position: relative; height: auto; }
  .hero, .inner, .site-footer { padding-left: 20px; padding-right: 20px; }
  .pair { grid-template-columns: 1fr; }
}