:root {
  --paper: #f3efe4;
  --ink: #1c1a14;
  --muted: #5c5648;
  --green: #0b6e63;
  --green-ink: #064840;
  --orange: #c45c26;
  --gold: #b0892e;
  --rule: #d8cfb8;
  --panel: #efe8d6;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Georgia, "Songti SC", Songti, SimSun, "STSong", serif;
  line-height: 1.85;
  font-size: 17px;
}

a {
  color: var(--green);
}

a:hover {
  color: var(--orange);
}

img,
svg {
  vertical-align: middle;
}

.site-bar {
  border-bottom: 1px solid var(--rule);
  background: #efe9d8;
}

.site-bar-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px 24px 14px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-size: 22px;
  letter-spacing: 0.08em;
  color: var(--green-ink);
  text-decoration: none;
  font-weight: 700;
}

.nav {
  display: flex;
  gap: 28px;
  font-size: 15px;
}

.nav a {
  text-decoration: none;
  color: var(--ink);
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}

.nav a[aria-current="page"] {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px 56px;
}

.page {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 0;
  align-items: start;
}

.toc {
  position: sticky;
  top: 16px;
  padding: 28px 18px 20px 0;
  font-size: 13px;
  line-height: 1.55;
}

.toc p {
  margin: 0 0 12px;
  color: var(--green);
  letter-spacing: 0.12em;
  font-size: 12px;
}

.toc ol {
  margin: 0;
  padding: 0 0 0 18px;
  color: var(--muted);
}

.toc li {
  margin: 0 0 10px;
}

.toc a {
  color: var(--muted);
  text-decoration: none;
}

.toc a:hover {
  color: var(--green);
}

.main {
  min-width: 0;
  padding: 8px 0 8px 36px;
  border-left: 2px solid var(--gold);
}

.hero {
  padding: 28px 0 18px;
  margin: 0 0 12px;
  border-bottom: 1px solid var(--rule);
}

.hero .kicker {
  margin: 0 0 10px;
  color: var(--orange);
  letter-spacing: 0.16em;
  font-size: 12px;
}

.hero h1 {
  margin: 0 0 16px;
  font-size: 30px;
  line-height: 1.35;
  color: var(--green-ink);
  font-weight: 700;
}

.hero .lead {
  margin: 0 0 20px;
  color: var(--ink);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  text-decoration: none;
  border: 1px solid var(--green);
  background: var(--green);
  color: #f7f3e8;
  font-family: inherit;
  font-size: 15px;
}

.btn:hover {
  background: var(--green-ink);
  color: #f7f3e8;
}

.btn-alt {
  background: transparent;
  color: var(--orange);
  border-color: var(--orange);
}

.btn-alt:hover {
  background: #f6e6d8;
  color: var(--orange);
}

.btn svg {
  flex: 0 0 auto;
}

.section {
  padding: 26px 0 8px;
}

.section h2 {
  margin: 0 0 14px;
  font-size: 22px;
  line-height: 1.4;
  color: var(--green-ink);
}

.section p {
  margin: 0 0 14px;
}

.note {
  margin: 0 0 14px;
  padding: 10px 0 10px 14px;
  border-left: 3px solid var(--orange);
  color: var(--muted);
}

.faq .qa {
  padding: 12px 0;
  border-top: 1px solid var(--rule);
}

.faq .qa:last-child {
  border-bottom: 1px solid var(--rule);
}

.faq h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.faq p {
  margin: 0;
  color: var(--ink);
}

.end-cta {
  margin: 28px 0 8px;
  padding: 20px 0 4px;
  border-top: 2px solid var(--green);
}

.end-cta p {
  margin: 0 0 14px;
}

.site-foot {
  border-top: 1px solid var(--rule);
  background: #ebe4d2;
}

.site-foot-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 22px 24px 28px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.site-foot p {
  margin: 0 0 6px;
}

.site-foot p:last-child {
  margin-bottom: 0;
}

@media (max-width: 860px) {
  .site-bar-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .page {
    grid-template-columns: 1fr;
  }

  .toc {
    position: static;
    padding: 18px 0 8px;
    border-bottom: 1px solid var(--rule);
  }

  .main {
    padding: 8px 0 0;
    border-left: 0;
    box-shadow: inset 3px 0 0 var(--gold);
    padding-left: 16px;
  }

  .hero h1 {
    font-size: 24px;
  }
}