:root {
  --brand: #1075C4;
  --brand-dark: #0B5A99;
  --brand-soft: #D7E8F7;
  --navy: #0D3A63;
  --ink: #26333f;
  --muted: #5d6c7b;
  --bg: #ffffff;
  --bg-soft: #f4f8fc;
  --line: #dde5ee;
  --radius: 12px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 860px; margin: 0 auto; padding: 0 24px; }
a { color: var(--brand-dark); }
a:hover { color: var(--brand); }

/* Nav */
nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255,255,255,0.95); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo img { height: 26px; width: auto; display: block; }
.logo span {
  font-size: 12px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--muted); border-left: 1px solid var(--line); padding-left: 10px;
}
.nav-links { display: flex; gap: 22px; align-items: center; font-size: 14px; }
.nav-links a { text-decoration: none; color: var(--muted); font-weight: 600; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--brand-dark); }

/* Header */
header.doc { padding: 56px 0 28px; border-bottom: 1px solid var(--line); }
header.doc h1 { font-size: clamp(30px, 5vw, 42px); line-height: 1.15; color: var(--navy); font-weight: 800; }
.meta { margin-top: 14px; font-size: 14px; color: var(--muted); }
.meta strong { color: var(--ink); }

/* Summary callout */
.summary {
  margin: 28px 0 0; padding: 20px 22px;
  background: var(--bg-soft); border: 1px solid var(--line);
  border-left: 4px solid var(--brand); border-radius: var(--radius);
}
.summary h2 { font-size: 14px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--brand-dark); margin-bottom: 8px; }
.summary p { font-size: 15px; color: var(--muted); }
.summary p + p { margin-top: 8px; }

/* TOC */
.toc { margin: 36px 0 8px; }
.toc h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 12px; }
.toc ol { list-style: none; counter-reset: toc; columns: 2; column-gap: 32px; }
.toc li { counter-increment: toc; margin-bottom: 7px; break-inside: avoid; font-size: 14px; }
.toc li a { text-decoration: none; }
.toc li a:hover { text-decoration: underline; }
.toc li a::before { content: counter(toc) ". "; color: var(--muted); }

/* Body */
main { padding-bottom: 72px; }
section.clause { padding-top: 40px; scroll-margin-top: 80px; }
section.clause h2 {
  font-size: 20px; color: var(--navy); font-weight: 700; line-height: 1.3;
  margin-bottom: 12px; display: flex; gap: 10px; align-items: baseline;
}
section.clause h2 .num { color: var(--brand); font-size: 15px; font-weight: 800; flex: none; }
section.clause h3 { font-size: 15px; color: var(--ink); font-weight: 700; margin: 18px 0 6px; }
section.clause p { margin-bottom: 12px; }
section.clause ul { margin: 0 0 12px 20px; }
section.clause li { margin-bottom: 7px; }
section.clause table {
  width: 100%; border-collapse: collapse; margin: 6px 0 16px; font-size: 14px;
}
section.clause th, section.clause td {
  text-align: left; padding: 10px 12px; border: 1px solid var(--line); vertical-align: top;
}
section.clause th { background: var(--bg-soft); font-weight: 700; color: var(--navy); }
.note {
  padding: 14px 16px; background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: var(--radius); font-size: 14px; color: var(--muted); margin-bottom: 12px;
}

/* Footer */
footer {
  border-top: 1px solid var(--line); background: var(--bg-soft);
  padding: 32px 0; font-size: 14px; color: var(--muted);
}
.foot { display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between; }
.foot a { text-decoration: none; }

@media (max-width: 640px) {
  .toc ol { columns: 1; }
  .nav-links { gap: 14px; font-size: 13px; }
  .logo span { display: none; }
}