:root {
  --paper: #f4eadf;
  --ink: #2a211b;
  --muted: #6d5c50;
  --line: #e2d2c2;
  --card: #fffaf4;
  --accent: #c4471a;
  --accent-ink: #fff8f3;
  --band: #efe2d4;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
}
a { color: var(--accent); }
.shell { display: grid; grid-template-columns: 232px 1fr; min-height: 100vh; }
.sidenav {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 28px 20px;
  background: #2a211b;
  color: #f6efe8;
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.brand { color: #fff; text-decoration: none; font-size: 22px; font-weight: 700; letter-spacing: 0.04em; }
.sidenav nav { display: flex; flex-direction: column; gap: 6px; }
.sidenav nav a {
  color: #f0e4d8;
  text-decoration: none;
  padding: 10px 12px;
  border-left: 3px solid transparent;
}
.sidenav nav a.on, .sidenav nav a:hover { border-left-color: #e07a45; background: rgba(255,255,255,0.06); }
.side-note { margin-top: auto; color: #d9c7b8; font-size: 13px; }
.stage { padding: 28px 6vw 64px; }
.hero {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 28px;
  align-items: center;
  margin-bottom: 28px;
}
.hero h1 { font-size: 40px; line-height: 1.25; margin: 0 0 12px; }
.kicker { color: var(--accent); font-weight: 700; letter-spacing: 0.08em; font-size: 13px; margin: 0 0 8px; }
.lead { font-size: 18px; margin: 0 0 14px; }
.pills { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 16px; padding: 0; list-style: none; }
.pills li { background: var(--band); border-radius: 999px; padding: 4px 12px; font-size: 14px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--accent-ink);
  text-decoration: none;
  padding: 12px 18px;
  border-radius: 8px;
  font-weight: 700;
}
.btn.ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-card {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 18px;
  border-radius: 16px;
}
.hero-card strong { display: block; margin-bottom: 8px; }
.scene-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 10px 0 28px; }
.scene-list a, .scene-list article {
  background: var(--card);
  border-radius: 14px;
  padding: 16px;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--line);
}
.scene-list svg { width: 28px; height: 28px; }
.band { background: var(--band); margin: 0 -6vw 28px; padding: 28px 6vw; }
.band.alt { background: transparent; padding-left: 0; padding-right: 0; margin-left: 0; margin-right: 0; }
h2 { font-size: 28px; line-height: 1.35; margin: 0 0 12px; }
.quote {
  border-left: 4px solid var(--accent);
  margin: 16px 0;
  padding: 8px 16px;
  background: rgba(255,255,255,0.45);
}
.path { display: grid; grid-template-columns: 80px 1fr; gap: 12px; margin-bottom: 16px; }
.path b { font-size: 28px; color: var(--accent); }
.faq article { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; margin-bottom: 10px; }
.faq h3 { margin: 0 0 6px; font-size: 18px; }
.who { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
footer.foot { margin-top: 36px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--line); padding-top: 16px; }
footer.foot p { margin: 6px 0; }
.dl-table { width: 100%; border-collapse: collapse; background: var(--card); }
.dl-table th, .dl-table td { border-bottom: 1px solid var(--line); text-align: left; padding: 12px; vertical-align: top; }
.steps { counter-reset: none; }
.steps li { margin: 10px 0; }
@media (max-width: 980px) {
  .shell { grid-template-columns: 1fr; }
  .sidenav { position: static; height: auto; }
  .sidenav nav { flex-direction: row; flex-wrap: wrap; }
  .side-note { display: none; }
  .hero, .scene-list, .who { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
  .band { margin-left: -20px; margin-right: -20px; padding-left: 20px; padding-right: 20px; }
  .stage { padding: 20px; }
}