:root {
  --bg-primary: #F7F3EC;
  --bg-secondary: #EFE7DA;
  --surface-primary: #FFFDFC;
  --surface-muted: #F3EEE5;
  --surface-strong: #E7DDCF;
  --border-subtle: #D6C9B7;
  --border-default: #B8A892;
  --border-strong: #8F7D67;
  --text-primary: #1F1A17;
  --text-secondary: #4D433A;
  --text-muted: #6E6256;
  --text-inverse: #FFFDFC;
  --accent-burgundy: #6E2C3A;
  --accent-burgundy-hover: #5C2430;
  --accent-burgundy-active: #4A1C27;
  --accent-petrol: #1F5C63;
  --accent-petrol-hover: #184A50;
  --accent-petrol-active: #12393D;
  --accent-brass: #A47A2A;
  --accent-brass-soft: #F3E7C8;
  --status-verified-text: #1D5B3A;
  --status-verified-bg: #E4F1E8;
  --status-verified-border: #A7C9B0;
  --status-partly-text: #7A5A12;
  --status-partly-bg: #F8EFCF;
  --status-partly-border: #D9C27A;
  --status-unverified-text: #7B3F00;
  --status-unverified-bg: #F7E6D6;
  --status-unverified-border: #D8AF84;
  --status-maychange-text: #5C4B7A;
  --font-serif: "Cormorant Garamond", Georgia, serif;
  --font-sans: Inter, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 40px;
  --space-8: 48px;
  --space-9: 64px;
  --space-10: 80px;
  --space-11: 96px;
  --container-max: 1200px;
  --container-read: 720px;
  --container-compare: 1280px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 999px;
  --shadow-soft: 0 1px 2px rgba(31, 26, 23, 0.04);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.625;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-petrol); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent-petrol-hover); }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent-brass);
  outline-offset: 2px;
}

.page-shell,
.site-header__inner,
.site-footer__inner,
.section,
.compare-wrap {
  width: min(100% - 32px, var(--container-max));
  margin-inline: auto;
}

.read-wrap { width: min(100% - 32px, var(--container-read)); margin-inline: auto; }
.compare-wrap { width: min(100% - 32px, var(--container-compare)); }

.site-header {
  background: var(--surface-primary);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 72px;
  padding-block: var(--space-3);
}
.site-brand {
  color: var(--text-primary);
  text-decoration: none;
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 1.1rem + 0.8vw, 1.75rem);
  line-height: 1.1;
  font-weight: 600;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.site-nav__toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  padding: 0 var(--space-3);
  border: 1px solid var(--border-default);
  background: var(--surface-primary);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  font: 500 14px/18px var(--font-sans);
}
.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}
.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--text-secondary);
  text-decoration: none;
  font: 500 14px/18px var(--font-sans);
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
}
.site-nav a[aria-current="page"],
.site-nav a.is-active {
  color: var(--text-primary);
  border-bottom-color: var(--accent-brass);
  text-underline-offset: 4px;
}

main { padding-block: var(--space-8) var(--space-10); }
.section { margin-top: var(--space-9); }
.section:first-child { margin-top: 0; }
.section__header { margin-bottom: var(--space-4); }
.section__title {
  margin: 0;
  font-weight: 600;
  color: var(--text-primary);
}
.section__title--serif {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 1.7rem + 1.5vw, 2.75rem);
  line-height: 1.09;
  letter-spacing: -0.02em;
}
.section__title--sans {
  font-family: var(--font-sans);
  font-size: clamp(1.5rem, 1.35rem + 0.8vw, 2rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
}
.section__lede,
.page-intro__orientation {
  margin: var(--space-4) 0 0;
  color: var(--text-secondary);
  font-size: clamp(1rem, 0.96rem + 0.25vw, 1.125rem);
  line-height: 1.667;
}

.page-intro {
  display: grid;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}
.page-intro__eyebrow {
  margin: 0 0 var(--space-3);
  color: var(--text-muted);
  font: 600 12px/16px var(--font-sans);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.page-intro h1 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(2.75rem, 2.1rem + 2.2vw, 3.5rem);
  line-height: 1.07;
  letter-spacing: -0.02em;
  font-weight: 600;
  color: var(--text-primary);
}
.page-intro__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  margin-top: var(--space-5);
}
.meta-item {
  min-width: 0;
}
.meta-item__label {
  display: block;
  margin-bottom: var(--space-1);
  color: var(--text-muted);
  font: 600 12px/16px var(--font-sans);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.meta-item__value {
  color: var(--text-primary);
  font: 400 14px/22px var(--font-sans);
}
.meta-item__value--mono {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
}

.card,
.panel,
.info-block {
  background: var(--surface-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-soft);
}
.panel--large { padding: 24px; }
.surface-muted {
  background: var(--surface-muted);
}

.editorial-statement {
  background: var(--surface-muted);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--accent-burgundy);
  padding: 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.editorial-statement__title {
  margin: 0 0 var(--space-2);
  color: var(--text-primary);
  font: 600 14px/18px var(--font-sans);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.editorial-statement__body {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.571;
}

.disclaimer-block {
  background: #FFF7ED;
  border: 1px solid var(--status-unverified-border);
  border-left: 4px solid var(--status-unverified-text);
  padding: 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: var(--space-4);
}
.disclaimer-block__title {
  margin: 0 0 var(--space-2);
  color: var(--status-unverified-text);
  font: 600 14px/18px var(--font-sans);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.disclaimer-block__body {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.571;
}

.method-note {
  background: #F4F7F7;
  border: 1px solid #BFD1D3;
  border-left: 4px solid var(--accent-petrol);
  padding: 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.method-note__title {
  margin: 0 0 var(--space-2);
  color: var(--accent-petrol);
  font: 600 14px/18px var(--font-sans);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.method-note__meta {
  margin: 0 0 var(--space-2);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
}
.method-note__body {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.571;
}

.role-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 24px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  color: var(--text-inverse);
  font: 600 12px/16px var(--font-sans);
  letter-spacing: 0.06em;
}
.role-label--historic { background: var(--accent-burgundy); }
.role-label--practical { background: var(--accent-petrol); }
.role-label--brass { background: var(--accent-brass); color: var(--text-primary); }

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 24px;
  padding: 4px 8px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font: 600 12px/16px var(--font-sans);
  white-space: nowrap;
}
.status-badge__icon {
  width: 14px;
  height: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  line-height: 1;
}
.status-badge--verified {
  color: var(--status-verified-text);
  background: var(--status-verified-bg);
  border-color: var(--status-verified-border);
}
.status-badge--partly-verified {
  color: var(--status-partly-text);
  background: var(--status-partly-bg);
  border-color: var(--status-partly-border);
}
.status-badge--unverified {
  color: var(--status-unverified-text);
  background: var(--status-unverified-bg);
  border-color: var(--status-unverified-border);
}
.status-badge--may-change {
  color: var(--status-maychange-text);
  background: #F1ECF8;
  border-color: #C8BADF;
}

.data-group {
  display: grid;
  gap: 12px;
}
.data-field {
  display: grid;
  gap: 4px;
}
.data-field__top {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.data-field__label {
  color: var(--text-muted);
  font: 600 12px/16px var(--font-sans);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.data-field__value {
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.625;
}
.data-field__value--short { font-weight: 500; }
.data-field__value--long { font-weight: 400; }
.data-field__note {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.571;
}

.grid-2,
.grid-3,
.grid-auto {
  display: grid;
  gap: var(--space-5);
}
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.compare-table-wrap {
  overflow-x: auto;
  background: var(--surface-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}
.compare-table thead th {
  position: sticky;
  top: 72px;
  z-index: 2;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-default);
  color: var(--text-primary);
  font: 600 14px/18px var(--font-sans);
  text-align: left;
  padding: 12px 16px;
}
.compare-table tbody tr:nth-child(odd) td {
  background: var(--surface-primary);
}
.compare-table tbody tr:nth-child(even) td {
  background: var(--bg-primary);
}
.compare-table td {
  padding: 12px 16px;
  vertical-align: top;
  border-bottom: 1px solid var(--border-subtle);
  min-height: 48px;
}
.compare-table__field {
  color: var(--text-primary);
  font: 600 14px/18px var(--font-sans);
}
.compare-table__cell {
  display: grid;
  gap: var(--space-2);
}
.compare-table__value {
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.625;
}
.compare-table__note {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.571;
}

.faq-list {
  display: grid;
  gap: var(--space-5);
}
.faq-item {
  background: var(--surface-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
}
.faq-item__question {
  margin: 0 0 var(--space-3);
  color: var(--text-primary);
  font: 600 20px/28px var(--font-sans);
}
.faq-item__answer {
  margin: 0;
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.625;
}

.pull-line {
  margin: 0;
  max-width: 32ch;
  color: var(--text-primary);
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 1.35rem + 0.8vw, 2rem);
  line-height: 1.18;
}

.link-list,
.inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  padding: 0;
  margin: 0;
  list-style: none;
}

.site-footer {
  background: var(--surface-primary);
  border-top: 1px solid var(--border-subtle);
}
.site-footer__inner {
  padding-block: var(--space-6);
  display: grid;
  gap: var(--space-4);
}
.site-footer__meta {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.571;
}

@media (max-width: 960px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-2,
  .page-intro,
  .site-header__inner { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  main { padding-block: var(--space-6) var(--space-9); }
  .section { margin-top: var(--space-8); }
  .site-header__inner {
    align-items: start;
    min-height: auto;
  }
  .site-nav__toggle { display: inline-flex; align-items: center; justify-content: center; }
  .site-nav {
    width: 100%;
    justify-content: space-between;
  }
  .site-nav__list {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 0;
    padding-top: var(--space-2);
  }
  .site-nav.is-open .site-nav__list { display: flex; }
  .site-nav a {
    width: 100%;
    min-height: 44px;
    border-bottom: 1px solid var(--border-subtle);
  }
  .grid-2,
  .grid-3,
  .grid-auto { grid-template-columns: 1fr; }
  .compare-table thead th { top: 0; }
}