:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --paper: #ffffff;
  --text: #202938;
  --muted: #637083;
  --line: #dfe6ee;
  --brand: #2656c9;
  --brand-soft: #edf3ff;
  --notice: #fff8e6;
  --notice-line: #e2b646;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.78;
}

.page {
  width: min(920px, calc(100% - 32px));
  margin: 36px auto;
  padding: 48px 56px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 14px 38px rgba(31, 49, 77, 0.08);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 10px;
  font-size: clamp(30px, 5vw, 44px);
  line-height: 1.2;
}

h2 {
  margin: 42px 0 12px;
  padding-top: 6px;
  border-top: 1px solid var(--line);
  font-size: 23px;
  line-height: 1.45;
}

h3 {
  margin: 26px 0 8px;
  font-size: 18px;
}

p { margin: 10px 0; }

ul, ol { padding-left: 24px; }

li + li { margin-top: 7px; }

a { color: var(--brand); }

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 18px 0 26px;
  color: var(--muted);
  font-size: 14px;
}

.summary,
.notice {
  margin: 24px 0;
  padding: 18px 20px;
  border-radius: 10px;
}

.summary {
  border-left: 4px solid var(--brand);
  background: var(--brand-soft);
}

.notice {
  border-left: 4px solid var(--notice-line);
  background: var(--notice);
}

.toc {
  margin: 26px 0 34px;
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.toc strong { display: block; margin-bottom: 8px; }

.toc ol {
  margin: 0;
  columns: 2;
  column-gap: 34px;
}

.data-table {
  width: 100%;
  margin: 16px 0;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th,
.data-table td {
  padding: 12px 13px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.data-table th { background: #f7f9fc; }

.contact-card {
  margin-top: 18px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fafcff;
  overflow-wrap: anywhere;
}

.footer {
  margin-top: 44px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 700px) {
  .page {
    width: 100%;
    margin: 0;
    padding: 30px 20px 42px;
    border: 0;
    border-radius: 0;
    box-shadow: none;
  }

  .toc ol { columns: 1; }

  .data-table { display: block; overflow-x: auto; }
}

@media print {
  body { background: #fff; }
  .page {
    width: 100%;
    margin: 0;
    padding: 0;
    border: 0;
    box-shadow: none;
  }
  a { color: inherit; text-decoration: none; }
}