/* TorZon Reference — one stylesheet, no JS, light theme */

:root {
  color-scheme: light;
  --bg: #fcfbf8;
  --surface: #ffffff;
  --ink: #14171c;
  --muted: #4b5260;
  --faint: #5b6270;
  --line: #e3dfd5;
  --accent: #0b5a60;
  --accent-dark: #084a4f;
  --accent-bg: #eff6f5;
  --radius: 10px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 1.25rem;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.125rem;
  line-height: 1.7;
}

img, svg { max-width: 100%; }

a {
  color: var(--accent-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover { color: var(--accent); }

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 0.7rem 1rem;
  z-index: 50;
}

.skip-link:focus { left: 0.5rem; top: 0.5rem; }

/* ---------- header ---------- */

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

.site-header__inner {
  max-width: 64rem;
  margin: 0 auto;
  padding: 0.9rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem 1.5rem;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
}

.brand:hover { color: var(--ink); }

.site-nav {
  display: flex;
  gap: 0.15rem 1.1rem;
  flex-wrap: wrap;
  margin-left: auto;
  font-size: 0.9375rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 0.2rem 0;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover { color: var(--accent-dark); }

.site-nav a[aria-current="page"] {
  color: var(--accent-dark);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

/* ---------- layout ---------- */

.wrap {
  max-width: 64rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.article {
  max-width: 41rem;
  margin: 0 auto;
  padding: 2.25rem 0 3rem;
}

.breadcrumb {
  font-size: 0.875rem;
  color: var(--faint);
  margin: 0 0 1rem;
}

.breadcrumb a { color: var(--faint); }

.breadcrumb span { padding: 0 0.35rem; }

h1, h2, h3 {
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-wrap: balance;
  margin: 0;
}

h1 {
  font-size: clamp(1.85rem, 1.3rem + 2.2vw, 2.6rem);
  margin-bottom: 0.7rem;
}

h2 {
  font-size: clamp(1.35rem, 1.15rem + 0.9vw, 1.6rem);
  margin: 2.6rem 0 0.7rem;
}

h3 {
  font-size: 1.125rem;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  font-weight: 700;
  margin: 1.7rem 0 0.4rem;
}

p { margin: 0 0 1.05rem; }

.dek {
  font-size: 1.1875rem;
  line-height: 1.6;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.meta {
  font-size: 0.875rem;
  color: var(--faint);
  margin: 0 0 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
}

ul, ol { margin: 0 0 1.05rem; padding-left: 1.3rem; }

li { margin-bottom: 0.45rem; }

li > ul, li > ol { margin-top: 0.45rem; }

strong { font-weight: 700; }

/* ---------- key answer ---------- */

.answer {
  background: var(--accent-bg);
  border-radius: var(--radius);
  padding: 1.2rem 1.35rem;
  margin: 0 0 2rem;
  font-size: 1rem;
  line-height: 1.62;
}

.answer p { margin: 0 0 0.6rem; }

.answer ul { margin: 0.5rem 0 0; padding-left: 1.15rem; }

.answer li { margin-bottom: 0.35rem; }

.answer li:last-child { margin-bottom: 0; }

/* ---------- table of contents ---------- */

.toc {
  margin: 0 0 2.25rem;
  font-size: 0.9688rem;
}

.toc h2 {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--faint);
  margin: 0 0 0.5rem;
}

.toc ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.1rem;
}

.toc li { margin: 0; }

.toc a { color: var(--muted); text-decoration: none; }

.toc a:hover { color: var(--accent-dark); text-decoration: underline; }

/* ---------- tables ---------- */

.table-wrap {
  overflow-x: auto;
  margin: 1.25rem 0 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9412rem;
  line-height: 1.55;
  min-width: 32rem;
}

caption {
  caption-side: top;
  text-align: left;
  padding: 0.75rem 1rem 0;
  font-size: 0.8125rem;
  color: var(--faint);
}

th, td {
  padding: 0.65rem 1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

thead th {
  background: #f5f3ed;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
}

tbody tr:last-child td { border-bottom: 0; }

/* ---------- timeline ---------- */

.timeline {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 1.5rem;
}

.timeline li {
  display: grid;
  grid-template-columns: 6rem 1fr;
  gap: 0.2rem 1rem;
  padding: 0.9rem 0;
  border-top: 1px solid var(--line);
  margin: 0;
}

.timeline li:last-child { border-bottom: 1px solid var(--line); }

.timeline .when {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent-dark);
  letter-spacing: 0.02em;
  padding-top: 0.2rem;
}

.timeline p { margin: 0; font-size: 1rem; color: var(--muted); }

.timeline strong { color: var(--ink); }

/* ---------- faq ---------- */

.faq { margin: 1rem 0 1.5rem; }

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 0.8rem 0;
}

.faq details:first-of-type { border-top: 1px solid var(--line); }

.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1.0313rem;
  line-height: 1.45;
  padding-right: 1rem;
}

.faq summary::marker { color: var(--accent); }

.faq details > p {
  margin: 0.6rem 0 0;
  color: var(--muted);
  font-size: 1rem;
}

.faq details > p:last-child { margin-bottom: 0.1rem; }

/* ---------- sources & asides ---------- */

.note {
  border-left: 3px solid var(--line);
  padding: 0.15rem 0 0.15rem 1rem;
  margin: 1.25rem 0;
  color: var(--muted);
  font-size: 1rem;
}

.note p:last-child { margin-bottom: 0; }

.sources {
  font-size: 0.9688rem;
  color: var(--muted);
}

.sources ol { padding-left: 1.15rem; }

.sources li { margin-bottom: 0.5rem; }

.sources .pub { color: var(--faint); }

.read-next {
  margin: 2.5rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: 1rem;
}

.read-next p { margin: 0 0 0.4rem; }

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  background: #f5f3ed;
  margin-top: 2.5rem;
  font-size: 0.9375rem;
  color: var(--muted);
}

.site-footer__inner {
  max-width: 64rem;
  margin: 0 auto;
  padding: 1.75rem 1.25rem 1.5rem;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
}

.site-footer h2 {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--faint);
  margin: 0 0 0.5rem;
}

.site-footer p { margin: 0 0 0.5rem; }

.site-footer ul { list-style: none; padding: 0; margin: 0; }

.site-footer li { margin-bottom: 0.3rem; }

.site-footer a { color: var(--muted); }

.legal {
  border-top: 1px solid var(--line);
  padding: 0.9rem 1.25rem 1.5rem;
  max-width: 64rem;
  margin: 0 auto;
  font-size: 0.8125rem;
  color: var(--faint);
}

.legal p { margin: 0; }

@media (max-width: 40rem) {
  body { font-size: 1.0625rem; }
  .article { padding-top: 1.5rem; }
  .timeline li { grid-template-columns: 1fr; gap: 0.1rem; }
  .timeline .when { padding-top: 0; }
  .site-header__inner { padding: 0.7rem 1rem; }
  .site-nav { font-size: 0.875rem; }
}

@media print {
  .site-header, .site-footer, .toc, .read-next { display: none; }
  body { background: #fff; font-size: 11pt; }
}