@font-face {
  font-family: "Shell";
  src: url("/assets/ShellBook.woff") format("woff");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Shell";
  src: url("/assets/ShellBold.woff") format("woff");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

:root {
  --ink: #4a4a4a;
  --strong: #4a4a4a;
  --paper: #fffdf8;
  --accent: #4a4a4a;
  --gold: #f7c500;
  --line: #dedbd3;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(90deg, var(--gold) 0 6px, var(--paper) 6px 100%);
  font-family: "Shell", "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.7;
}

.site-header {
  display: flex;
  align-items: center;
  min-height: 88px;
  padding: 20px clamp(24px, 6vw, 88px);
  border-bottom: 1px solid var(--line);
}

.brand { position: relative; display: inline-flex; align-items: center; min-width: 96px; color: var(--accent); text-decoration: none; }
.brand img { display: block; max-width: 128px; height: 48px; object-fit: contain; object-position: left center; }

main { padding: clamp(52px, 8vw, 112px) 24px; }
.document { width: min(100%, 780px); margin: 0 auto; }
.document-header { margin-bottom: 56px; }
.eyebrow { margin: 0 0 8px; color: var(--accent); font-size: 14px; font-weight: 700; letter-spacing: 0; text-transform: uppercase; }
h1 { max-width: 680px; margin: 0; color: var(--strong); font-size: clamp(42px, 7vw, 72px); line-height: 1.02; letter-spacing: 0; }
.updated { margin: 24px 0 0; font-size: 14px; }
.introduction { max-width: 650px; margin: 26px 0 0; font-size: 21px; line-height: 1.5; }

.notice { display: grid; gap: 2px; margin-bottom: 20px; padding: 18px 20px; border-left: 4px solid var(--gold); background: #fff6c9; font-size: 14px; line-height: 1.5; }
.notice strong { color: var(--strong); }
.contents { margin-bottom: 28px; padding: 24px; border-top: 4px solid var(--gold); background: #f7f6f1; }
.contents h2 { font-size: 18px; }
.contents ol { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px 28px; margin: 14px 0 0; padding-left: 24px; font-size: 14px; }
.contents a, section a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
section { display: grid; grid-template-columns: 52px 1fr; gap: 20px; padding: 34px 0; border-top: 1px solid var(--line); }
.section-number { padding-top: 3px; color: var(--accent); font-size: 13px; font-weight: 700; }
h2 { margin: 0 0 10px; color: var(--strong); font-size: 25px; line-height: 1.25; letter-spacing: 0; }
p { margin: 0; }
section { scroll-margin-top: 24px; }
section ol, section ul { margin: 0; padding-left: 22px; }
section li + li, section ol + ol, section p + p, section p + ul, section ul + p { margin-top: 12px; }
footer { padding: 28px 24px 40px; color: var(--ink); text-align: center; font-size: 13px; }

@media (max-width: 560px) {
  body { font-size: 16px; }
  .site-header { min-height: 72px; padding: 14px 24px; }
  main { padding-top: 48px; }
  .document-header { margin-bottom: 40px; }
  .contents ol { grid-template-columns: 1fr; }
  section { grid-template-columns: 36px 1fr; gap: 12px; }
}

@media print {
  body { background: white; }
  .site-header { padding-inline: 0; }
  main { padding: 36px 0; }
  .notice { display: none; }
}