:root {
  --ink: #17324d;
  --muted: #607387;
  --line: #d9e2ea;
  --paper: #fffdf8;
  --blue: #1d5fa7;
  --orange: #d87516;
  --green: #2f7d52;
  --red: #b84638;
  --soft-blue: #eef6ff;
  --soft-orange: #fff4e8;
}

* { box-sizing: border-box; }

html { background: #edf2f5; }

body {
  width: calc(100% - 64px);
  max-width: 1180px;
  margin: 32px auto;
  padding: 54px 62px 72px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid #e3e8ec;
  border-radius: 24px;
  box-shadow: 0 24px 70px rgba(25, 54, 78, .12);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.72;
}

h1 {
  margin: 0 0 18px;
  padding-bottom: 18px;
  border-bottom: 5px solid var(--blue);
  font-size: clamp(32px, 4vw, 50px);
  line-height: 1.15;
  letter-spacing: -.03em;
  overflow-wrap: anywhere;
  word-break: break-word;
}

h2 {
  margin-top: 46px;
  padding-left: 14px;
  border-left: 6px solid var(--orange);
  font-size: 25px;
  line-height: 1.3;
}

h3 { margin-top: 28px; color: var(--blue); font-size: 19px; }

blockquote {
  margin: 22px 0 30px;
  padding: 16px 20px;
  background: var(--soft-blue);
  border-left: 4px solid var(--blue);
  border-radius: 0 12px 12px 0;
  color: #40556a;
}

table {
  width: 100%;
  max-width: 100%;
  margin: 18px 0 26px;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  font-size: 14px;
}

th, td {
  padding: 11px 12px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th:last-child, td:last-child { border-right: 0; }
tr:last-child td { border-bottom: 0; }
th { background: #eaf2f9; color: #193d5f; font-weight: 700; }
tbody tr:nth-child(even) { background: #fbfcfd; }

ol, ul { padding-left: 24px; }
li { margin: 7px 0; }
strong { color: #0d4f8b; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

img {
  display: block;
  width: 100%;
  height: auto;
  margin: 20px auto 10px;
  border: 1px solid #e5dfd1;
  border-radius: 18px;
  box-shadow: 0 16px 40px rgba(38, 52, 65, .12);
}

hr { border: 0; border-top: 1px solid var(--line); margin: 40px 0; }

@media (max-width: 760px) {
  html { background: var(--paper); }
  body { width: 100%; max-width: 100vw; margin: 0; padding: 28px 18px 48px; overflow-x: hidden; border: 0; border-radius: 0; box-shadow: none; }
  h1 { font-size: 34px; }
  h2 { margin-top: 36px; font-size: 22px; }
  table { display: block; overflow-x: auto; white-space: normal; }
  th, td { min-width: 132px; }
}

@media print {
  html { background: white; }
  body { max-width: none; margin: 0; padding: 0; border: 0; box-shadow: none; }
  h2 { break-after: avoid; }
  table, img { break-inside: avoid; }
}