:root {
  --ink: #1c2430;
  --navy: #0d2240;
  --navy-2: #16345c;
  --gold: #a67c2d;
  --gold-2: #f3e6c8;
  --paper: #f3efe6;
  --card: #fffcf7;
  --line: #ddd4c4;
  --muted: #5c6570;
}
* { 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;
  font-size: 17px;
  line-height: 1.8;
}
a { color: #0e4d78; }
img { max-width: 100%; }
.mast { background: linear-gradient(160deg, var(--navy), var(--navy-2)); color: #f7f3ea; }
.mast a { color: #f7f3ea; }
.bar {
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px 24px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}
.brand { font-weight: 700; letter-spacing: 0.04em; text-decoration: none; font-size: 20px; }
.nav { display: flex; flex-wrap: wrap; gap: 8px 16px; font-size: 14px; }
.nav a { text-decoration: none; border-bottom: 1px solid transparent; }
.nav a:hover { border-bottom-color: var(--gold); }
.hero {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 24px 40px;
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 28px;
  align-items: start;
}
.hero h1 { margin: 0 0 12px; font-size: 34px; line-height: 1.35; font-weight: 750; }
.lede { margin: 0 0 14px; color: #e7e1d4; }
.points { margin: 0; padding: 0; list-style: none; }
.points li { display: flex; gap: 10px; margin: 8px 0; }
.points svg { flex: 0 0 auto; margin-top: 4px; }
.hero-side {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(243,230,200,0.35);
  padding: 18px;
}
.hero-side p { margin: 0 0 10px; color: #f3e6c8; font-size: 14px; }
.btns { display: flex; flex-wrap: wrap; gap: 8px; }
.btn {
  display: inline-block;
  text-decoration: none;
  padding: 10px 14px;
  background: var(--gold);
  color: #1a1408;
  font-weight: 700;
  border: 0;
}
.btn.ghost { background: transparent; color: inherit; border: 1px solid currentColor; font-weight: 600; }
.jumps { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 10px 14px; font-size: 14px; }
.frame { max-width: 1180px; margin: 0 auto; padding: 28px 24px 64px; display: grid; grid-template-columns: 210px 1fr; gap: 28px; }
.toc { position: sticky; top: 12px; align-self: start; font-size: 14px; }
.toc a { display: block; color: var(--navy); text-decoration: none; padding: 6px 0; border-bottom: 1px solid var(--line); }
.sheet { background: var(--card); border: 1px solid var(--line); padding: 22px 26px 8px; margin: 0 0 18px; }
.sheet h2 { margin: 0 0 12px; font-size: 24px; line-height: 1.4; color: var(--navy); border-bottom: 3px solid var(--gold); padding-bottom: 8px; }
.sheet h3 { margin: 18px 0 6px; font-size: 18px; color: #24344d; }
.sheet p { margin: 0 0 14px; }
.sheet ul, .sheet ol { margin: 0 0 14px; padding-left: 1.2em; }
.sheet li { margin: 6px 0; }
table { width: 100%; border-collapse: collapse; margin: 0 0 16px; font-size: 15px; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: var(--gold-2); color: var(--navy); }
.call { background: #f8f1de; border-left: 4px solid var(--gold); padding: 10px 14px; margin: 0 0 16px; }
.dl { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 16px; }
.foot { background: var(--navy); color: #e6e0d4; padding: 28px 24px 40px; font-size: 14px; }
.foot-in { max-width: 1180px; margin: 0 auto; }
.foot p { margin: 0 0 8px; }
@media (max-width: 860px) {
  .hero, .frame { grid-template-columns: 1fr; }
  .toc { position: static; }
  .hero h1 { font-size: 28px; }
}