@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@500;600&family=Manrope:wght@400;500;600;700&display=swap');
:root { --ink: #063f39; --text: #102f2c; --muted: #4f6560; --paper: #fafcf8; --mint: #eaf6f2; --line: #d9e5e0; --white: #fff; --amber: #fbf4e8; --sans: 'Manrope', system-ui, sans-serif; --serif: 'Cormorant Garamond', Georgia, serif; }
* { box-sizing: border-box; }
html { scroll-padding-top: 24px; }
body { margin: 0; background: var(--paper); color: var(--text); font: 16px/1.85 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: var(--ink); text-underline-offset: 4px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; border-radius: 3px; }
.skip { position: absolute; left: 16px; top: -100px; z-index: 5; padding: 12px; background: var(--white); }
.skip:focus { top: 8px; }
.masthead { max-width: 1240px; margin: auto; padding: 24px 40px; display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.brand { font-family: var(--serif); font-size: 28px; line-height: 1.2; letter-spacing: 2px; text-decoration: none; }
.brand span { display: block; font: 9px/2 var(--sans); letter-spacing: 2px; }
.languages { display: flex; flex-wrap: wrap; gap: 4px; }
.languages a { padding: 10px 14px; min-height: 44px; font-size: 13px; text-decoration: none; border-radius: 8px; }
.languages a[aria-current] { background: var(--ink); color: var(--white); }
.languages a:not([aria-current]):hover { background: var(--mint); }
main { max-width: 1240px; margin: auto; padding: 0 40px; }
.hero { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); align-items: center; gap: 40px; background: var(--ink); color: var(--white); padding: 48px; border-radius: 20px; }
.eyebrow { text-transform: uppercase; font-size: 11px; letter-spacing: 2px; opacity: .85; }
h1 { font-size: clamp(24px, 3vw, 34px); line-height: 1.3; margin: 24px 0; font-weight: 500; }
h1 span { display: block; font: 600 clamp(48px, 6vw, 76px)/1.1 var(--serif); margin-bottom: 12px; }
.hero p { font-size: 14px; }
.hero .hero-subtitle { font-size: 19px; line-height: 1.5; }
.hero .edition { font-size: 11px; margin-top: 28px; opacity: .8; }
figure { margin: 0; min-width: 0; background: var(--white); color: var(--ink); border-radius: 12px; overflow: hidden; }
figure img { width: 100%; height: auto; display: block; }
figcaption { padding: 16px; font-size: 11px; text-align: center; }
.professional-note { padding: 24px 0; font-size: 13px; line-height: 1.8; color: var(--muted); border-bottom: 1px solid var(--line); }
.reading-layout { display: grid; grid-template-columns: 228px minmax(0, 1fr); gap: 56px; align-items: start; }
.contents { position: sticky; top: 24px; padding-top: 40px; }
.contents h2 { font-size: 12px; letter-spacing: 1px; margin: 0 0 16px; }
.contents ol { padding: 0; margin: 0; list-style-position: inside; font-size: 12px; color: var(--muted); }
.contents li { border-bottom: 1px solid var(--line); }
.contents a { display: inline-block; padding: 10px 0; font-size: 13px; text-decoration: none; }
.contents a:hover { text-decoration: underline; }
.contents .back-link { margin-top: 20px; font-size: 12px; }
article { min-width: 0; }
.chapter { padding: 40px 0; border-bottom: 1px solid var(--line); overflow-wrap: anywhere; }
.chapter-label { color: var(--muted); font-size: 11px; letter-spacing: 1px; text-transform: uppercase; margin: 0 0 12px; }
.chapter h2 { color: var(--ink); font-size: clamp(24px, 2.4vw, 32px); line-height: 1.4; margin: 0 0 24px; font-weight: 600; }
.chapter h3 { color: var(--ink); font-size: 17px; line-height: 1.6; margin: 24px 0 8px; }
.chapter p { margin: 12px 0; }
.chapter ul { padding-left: 24px; }
.chapter li { margin-bottom: 12px; }
table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 13px; table-layout: fixed; }
caption { text-align: left; font-size: 12px; color: var(--muted); padding-bottom: 12px; }
th, td { padding: 14px 12px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); overflow-wrap: anywhere; }
thead { background: var(--ink); color: var(--white); }
tbody th { font-weight: 500; }
tbody tr:nth-child(even) { background: var(--mint); }
.note { padding: 20px 24px; margin: 28px 0; border-radius: 12px; background: var(--mint); }
.note h3 { margin-top: 0; }
.note p:last-child { margin-bottom: 0; }
.caution { background: var(--amber); }
.formula { background: var(--ink); color: var(--white); padding: 24px; border-radius: 12px; margin: 28px 0; font-variant-numeric: tabular-nums; }
.formula h3 { color: var(--white); margin-top: 0; }
.formula p { font-size: 14px; }
.steps { padding-left: 24px; }
.steps li { padding-left: 8px; }
.steps li::marker { color: var(--ink); font-weight: 700; }
.steps p { margin-top: 4px; }
.evidence { margin: 24px 0; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.citation { font-size: 12px; white-space: nowrap; }
.references { padding-left: 24px; font-size: 13px; }
.references a { display: inline-block; padding: 8px 0; }
.related { display: grid; gap: 8px; }
.related a { padding: 12px 16px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; text-decoration: none; }
.related a:hover { background: var(--mint); }
footer { max-width: 1240px; padding: 32px 40px; margin: auto; display: flex; flex-wrap: wrap; gap: 16px 24px; font-size: 12px; color: var(--muted); }
footer a { margin-left: auto; }
@media (max-width: 960px) {
  .hero { padding: 32px; gap: 24px; }
  .reading-layout { grid-template-columns: 180px minmax(0, 1fr); gap: 32px; }
}
@media (max-width: 720px) {
  .masthead { padding: 20px; flex-wrap: wrap; gap: 16px; }
  .languages { width: 100%; }
  .languages a { flex: 1; text-align: center; }
  main { padding: 0 20px; }
  .hero { grid-template-columns: minmax(0, 1fr); padding: 24px; gap: 16px; }
  h1 { margin: 16px 0; }
  .hero .edition { margin-top: 16px; }
  .reading-layout { display: block; }
  .contents { position: static; padding: 24px 0; border-bottom: 1px solid var(--line); }
  .contents ol { columns: 2; column-gap: 20px; }
  .contents li { break-inside: avoid; margin: 0; }
  .contents a { font-size: 12px; }
  .chapter { padding: 32px 0; }
  .chapter h2 { font-size: 25px; }
  th, td { padding: 10px 8px; font-size: 12px; }
  .note, .formula { padding: 20px; }
  footer { padding: 24px 20px; }
}
@media print {
  body { font-size: 11pt; background: white; }
  .masthead, .contents, .professional-note, footer { position: static; }
  .languages, .contents, .skip { display: none; }
  main { padding: 0; }
  .hero { background: white; color: black; padding: 0; }
  .reading-layout { display: block; }
  .chapter { break-before: auto; }
  .note, .formula, tr { break-inside: avoid; }
  .formula { color: black; background: white; border: 1px solid #ddd; }
  .formula h3 { color: black; }
}