:root {
  --sand: #f5f0e6;
  --sand-deep: #ebe3d1;
  --clay: #8b6914;
  --clay-dark: #5c450c;
  --pine: #1f4d32;
  --pine-soft: #2d6a46;
  --ink: #2b2416;
  --muted: #5e5344;
  --card: #fffaf0;
  --line: #d4c7a8;
}

* { box-sizing: border-box; }
html { scroll-behavior: auto; }
body {
  margin: 0;
  background: var(--sand);
  color: var(--ink);
  font-family: Georgia, "Palatino Linotype", "Songti SC", "SimSun", "Microsoft YaHei", serif;
  line-height: 1.85;
}

.topbar {
  background: var(--clay);
  color: #f8f1dc;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 4.5vw;
  min-height: 68px;
  border-bottom: 4px solid var(--pine);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.brand svg { flex-shrink: 0; }
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.nav a {
  color: #f8f1dc;
  text-decoration: none;
  font-size: 14px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
}
.nav a:hover { text-decoration: underline; }

.hero {
  padding: 52px 4.5vw 40px;
  background:
    linear-gradient(180deg, #efe6d2 0%, var(--sand) 100%);
  border-bottom: 1px solid var(--line);
}
.hero-kicker {
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--clay-dark);
  text-transform: uppercase;
  margin: 0 0 12px;
}
.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.35;
  max-width: 18em;
}
.hero p {
  margin: 0;
  max-width: 40em;
  color: var(--muted);
  font-size: 18px;
}

.wrap { width: min(1120px, 92vw); margin: 0 auto; }
section { padding: 56px 0; }
section + section { border-top: 1px dashed var(--line); }
h2 {
  margin: 0 0 18px;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.4;
}
.lead { color: var(--muted); margin: 0 0 22px; max-width: 46em; }
p { margin: 0 0 16px; }
p:last-child { margin-bottom: 0; }

.scenes {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 8px;
}
.scene {
  min-width: 260px;
  flex: 1;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 6px solid var(--pine);
  padding: 20px 18px 22px;
}
.scene svg { display: block; margin-bottom: 12px; }
.scene h3 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--clay-dark);
}
.scene p { font-size: 15px; color: var(--muted); }

.notes {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.note {
  background: var(--card);
  padding: 22px 20px;
  border: 1px solid var(--line);
}
.note h3 { margin: 0 0 8px; font-size: 18px; color: var(--pine); }
.note p { color: var(--muted); font-size: 15px; }

.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  counter-reset: step;
}
.step {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 20px 16px;
  position: relative;
}
.step + .step { border-left: none; }
.step::before {
  counter-increment: step;
  content: counter(step);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--pine);
  color: #fff;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 13px;
  margin-bottom: 10px;
}
.step h3 { margin: 0 0 8px; font-size: 16px; }
.step p { font-size: 14px; color: var(--muted); }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--line);
}
.split article {
  padding: 28px 24px;
  background: var(--card);
}
.split article:first-child {
  background: #e8f0ea;
  border-right: 1px solid var(--line);
}
.split h3 { margin: 0 0 10px; font-size: 20px; color: var(--pine); }

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  font-size: 15px;
}
th, td {
  border: 1px solid var(--line);
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}
th { background: var(--clay); color: #fff8e7; font-weight: 600; }

.faq-list { margin: 0; padding: 0; list-style: none; }
.faq-list li {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 18px 20px;
  margin-bottom: 12px;
}
.faq-list h3 { margin: 0 0 8px; font-size: 17px; }
.faq-list p { color: var(--muted); font-size: 15px; }

.site-footer {
  background: var(--clay-dark);
  color: #f3e6c4;
  padding: 36px 4.5vw 40px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.75;
}
.site-footer p { margin: 0 0 10px; }

@media (max-width: 900px) {
  .notes, .split { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .step + .step { border-left: 1px solid var(--line); }
  .split article:first-child { border-right: none; border-bottom: 1px solid var(--line); }
  .topbar { flex-direction: column; align-items: flex-start; padding: 14px 4.5vw; gap: 10px; }
}