:root {
  --ink: #17211b;
  --muted: #5c6b62;
  --bg: #f3f1ea;
  --card: #fffcf6;
  --green: #146c43;
  --line: #ddd6c8;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Palatino Linotype", "Songti SC", "SimSun", "Microsoft YaHei", serif;
  line-height: 1.8;
}
a { color: var(--green); }
.mast {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: end;
  padding: 22px 6vw 16px;
  border-bottom: 4px solid var(--green);
  background: #f7f4ec;
}
.brand { font-size: 26px; font-weight: 700; color: var(--ink); text-decoration: none; font-family: "Segoe UI", "Microsoft YaHei", sans-serif; }
.mast nav { display: flex; gap: 8px; }
.mast nav a {
  text-decoration: none; color: var(--ink);
  border: 1px solid var(--line); padding: 6px 12px; background: #fff;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif; font-size: 14px;
}
.mast nav a.on { background: var(--green); color: #fff; border-color: var(--green); }
.paper { padding: 28px 6vw 70px; display: grid; grid-template-columns: 1fr 280px; gap: 32px; }
.main h1 { font-size: 38px; line-height: 1.3; margin: 0 0 12px; }
.deck { font-size: 18px; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; padding: 0; list-style: none; }
.chips li { border-bottom: 2px solid var(--green); padding: 2px 0; margin-right: 10px; font-family: "Segoe UI", "Microsoft YaHei", sans-serif; font-size: 14px; }
.btn {
  display: inline-block; background: var(--green); color: #fff; text-decoration: none;
  padding: 10px 16px; font-family: "Segoe UI", "Microsoft YaHei", sans-serif; font-weight: 700;
}
.btn.alt { background: transparent; color: var(--green); border: 1px solid var(--green); }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 20px; }
h2 { font-size: 26px; line-height: 1.4; margin: 28px 0 8px; }
.versus { width: 100%; border-collapse: collapse; background: var(--card); margin: 8px 0 12px; }
.versus th, .versus td { border: 1px solid var(--line); padding: 10px 12px; vertical-align: top; text-align: left; }
.versus th { background: #e7f3ec; font-family: "Segoe UI", "Microsoft YaHei", sans-serif; }
.pull { margin: 16px 0; padding: 14px 18px; background: #e7f3ec; font-size: 18px; }
.side {
  position: sticky; top: 16px; align-self: start;
  background: var(--card); border: 1px solid var(--line); padding: 16px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
}
.side h2 { font-size: 18px; margin-top: 0; }
.qa article { border-top: 1px solid var(--line); padding: 12px 0; }
.qa h3 { margin: 0 0 6px; font-size: 18px; font-family: "Segoe UI", "Microsoft YaHei", sans-serif; }
footer { grid-column: 1 / -1; color: var(--muted); font-size: 13px; font-family: "Segoe UI", "Microsoft YaHei", sans-serif; border-top: 1px solid var(--line); padding-top: 12px; }
ol.tight li { margin: 8px 0; }
@media (max-width: 980px) {
  .mast, .paper { grid-template-columns: 1fr; padding-left: 16px; padding-right: 16px; }
  .side { position: static; }
  .main h1 { font-size: 30px; }
}