:root {
  --font-serif: 'Iowan Old Style', 'Palatino Linotype', Palatino, 'Book Antiqua', Georgia, 'Times New Roman', serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --radius-md: 8px;
  --radius-lg: 12px;
  --hairline: 0.5px;
  --max-reading: 680px;

  /* light mode (paper) */
  --bg-primary: #faf7f1;
  --bg-secondary: #f1ece2;
  --bg-tertiary: #efe9dd;
  --text-primary: #1f1b16;
  --text-secondary: #6b6358;
  --text-tertiary: #9a9182;
  --border-tertiary: rgba(31,27,22,0.12);
  --border-secondary: rgba(31,27,22,0.26);
  --link: #7a5a3a;
  --link-hover: #5b4026;
  --accent-success-bg: #e3ecdf; --accent-success-text: #3f5d3a;
  --accent-warning-bg: #f1e7cf; --accent-warning-text: #7a5d22;
  --accent-info-bg: #e0e7ee; --accent-info-text: #3c566e;
  --accent-info-border: #6f93b5;
  --accent-danger-bg: #f0dcd7; --accent-danger-text: #8a3b2a;
  --present-field: #0c0b0a;
}
[data-theme="dark"] {
  --bg-primary: #15130f;
  --bg-secondary: #1e1b16;
  --bg-tertiary: #100e0b;
  --text-primary: #ece5d8;
  --text-secondary: #a89e8d;
  --text-tertiary: #6f6657;
  --border-tertiary: rgba(236,229,216,0.14);
  --border-secondary: rgba(236,229,216,0.28);
  --link: #d6ad7f;
  --link-hover: #ecc699;
  --accent-success-bg: #25301f; --accent-success-text: #a9c79c;
  --accent-warning-bg: #322a16; --accent-warning-text: #d8b878;
  --accent-info-bg: #1d2a36; --accent-info-text: #9fc0dc;
  --accent-info-border: #5e83a3;
  --accent-danger-bg: #361e18; --accent-danger-text: #d99b88;
  --present-field: #050505;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-primary: #15130f; --bg-secondary: #1e1b16; --bg-tertiary: #100e0b;
    --text-primary: #ece5d8; --text-secondary: #a89e8d; --text-tertiary: #6f6657;
    --border-tertiary: rgba(236,229,216,0.14); --border-secondary: rgba(236,229,216,0.28);
    --link: #d6ad7f; --link-hover: #ecc699;
    --accent-success-bg: #25301f; --accent-success-text: #a9c79c;
    --accent-warning-bg: #322a16; --accent-warning-text: #d8b878;
    --accent-info-bg: #1d2a36; --accent-info-text: #9fc0dc; --accent-info-border: #5e83a3;
    --accent-danger-bg: #361e18; --accent-danger-text: #d99b88;
    --present-field: #050505;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg-primary); color: var(--text-primary);
  font-family: var(--font-serif); font-size: 17px; line-height: 1.75;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
a { color: var(--link); text-decoration: none; }
a:hover { color: var(--link-hover); text-decoration: underline; text-underline-offset: 2px; }
.ext { font-size: 0.8em; margin-left: 1px; }
img { display: block; max-width: 100%; height: auto; }

.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--text-primary); color: var(--bg-primary);
  padding: 8px 14px; border-radius: var(--radius-md); font-family: var(--font-sans); z-index: 100;
}
.skip-link:focus { left: 12px; top: 12px; }

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

/* ===== chrome (sans) ===== */
.chrome { font-family: var(--font-sans); }
.site-header {
  position: sticky; top: 0; z-index: 30; backdrop-filter: saturate(1.2) blur(8px);
  background: color-mix(in srgb, var(--bg-primary) 86%, transparent);
  border-bottom: var(--hairline) solid var(--border-tertiary);
}
.site-header-inner {
  max-width: 1100px; margin: 0 auto; padding: 12px 24px;
  display: flex; align-items: baseline; gap: 22px;
}
.brand { font-family: var(--font-serif); font-size: 19px; font-weight: 500; letter-spacing: -0.01em; color: var(--text-primary); }
.brand:hover { text-decoration: none; }
.brand .glyph { color: var(--text-tertiary); margin-right: 8px; }
.nav { display: flex; gap: 18px; font-size: 13px; }
.nav a { color: var(--text-secondary); }
.nav a:hover { color: var(--text-primary); text-decoration: none; }
.header-spacer { flex: 1; }
.header-search { position: relative; }
.header-search input {
  font-family: var(--font-sans); font-size: 13px; padding: 6px 10px 6px 28px; width: 160px;
  background: var(--bg-primary); border: var(--hairline) solid var(--border-tertiary); border-radius: var(--radius-md);
  color: var(--text-primary);
}
.header-search input:focus { width: 220px; outline: 2px solid var(--accent-info-border); outline-offset: 1px; }
.header-search .mag { position: absolute; left: 9px; top: 50%; transform: translateY(-50%); color: var(--text-tertiary); font-size: 13px; }
.theme-toggle {
  font-family: var(--font-sans); font-size: 12px; background: none; border: var(--hairline) solid var(--border-secondary);
  color: var(--text-secondary); border-radius: var(--radius-md); padding: 5px 10px; cursor: pointer;
}
.theme-toggle:hover { background: var(--bg-secondary); color: var(--text-primary); }

.page { max-width: 1100px; margin: 0 auto; padding: 0 24px 96px; }
.reading { max-width: var(--max-reading); margin: 0 auto; padding: 0 0 96px; }

.breadcrumbs { font-family: var(--font-sans); font-size: 13px; color: var(--text-secondary); margin: 26px 0 18px; }
.breadcrumbs a { color: var(--accent-info-text); }
.breadcrumbs .sep { color: var(--text-tertiary); margin: 0 7px; }

.metastrip { font-family: var(--font-sans); font-size: 12.5px; color: var(--text-secondary); display: flex; flex-wrap: wrap; gap: 0; }
.metastrip span { white-space: nowrap; }
.metastrip span + span::before { content: '\u00B7'; color: var(--text-tertiary); margin: 0 8px; opacity: 0.7; }

/* ===== home / discovery ===== */
.hero-block { padding: 56px 0 30px; max-width: 760px; }
.hero-block h1 { font-size: 40px; line-height: 1.12; font-weight: 500; letter-spacing: -0.02em; margin: 0 0 14px; }
.hero-block .dek { font-size: 19px; color: var(--text-secondary); font-style: italic; margin: 0; }
.hero-stats { font-family: var(--font-sans); font-size: 13px; color: var(--text-tertiary); margin-top: 22px; }

.section-title { font-family: var(--font-sans); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-tertiary); margin: 54px 0 18px; font-weight: 600; }

.continent-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px 48px; }
.continent { padding: 14px 0; border-top: var(--hairline) solid var(--border-tertiary); }
.continent h3 { font-size: 21px; font-weight: 500; margin: 0 0 8px; }
.region-links { font-family: var(--font-sans); font-size: 13.5px; line-height: 1.9; }
.region-links a { color: var(--text-secondary); margin-right: 4px; }
.region-links a:hover { color: var(--text-primary); text-decoration: none; }
.region-links .ct { color: var(--text-tertiary); font-size: 11px; }
.region-links .dot { color: var(--text-tertiary); margin: 0 8px; opacity: 0.5; }

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px 28px; }
.card { display: block; color: inherit; }
.card:hover { text-decoration: none; }
.card .frame { aspect-ratio: 3/2; overflow: hidden; border-radius: var(--radius-md); background: var(--bg-secondary); border: var(--hairline) solid var(--border-tertiary); }
.card .frame img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.card:hover .frame img { transform: scale(1.03); }
.card h4 { font-size: 19px; font-weight: 500; margin: 12px 0 4px; line-height: 1.25; color: var(--text-primary); }
.card .cmeta { font-family: var(--font-sans); font-size: 12px; color: var(--text-secondary); }
.card .cdek { font-size: 15px; color: var(--text-secondary); font-style: italic; margin: 4px 0 0; line-height: 1.5; }

/* region & list pages */
.list-head { padding: 44px 0 8px; }
.list-head h1 { font-size: 32px; font-weight: 500; letter-spacing: -0.015em; margin: 0 0 6px; }
.list-head .dek { color: var(--text-secondary); font-style: italic; font-family: var(--font-serif); }
.chapter-rows { margin-top: 24px; }
.chapter-row { display: grid; grid-template-columns: 116px 1fr; gap: 20px; padding: 18px 0; border-top: var(--hairline) solid var(--border-tertiary); align-items: start; }
.chapter-row:hover { text-decoration: none; }
.chapter-row .frame { aspect-ratio: 3/2; overflow: hidden; border-radius: var(--radius-md); background: var(--bg-secondary); border: var(--hairline) solid var(--border-tertiary); }
.chapter-row .frame img { width: 100%; height: 100%; object-fit: cover; }
.chapter-row h3 { font-size: 20px; font-weight: 500; margin: 0 0 4px; color: var(--text-primary); }
.chapter-row .cdek { color: var(--text-secondary); font-style: italic; font-size: 15px; margin: 0 0 6px; }
.chapter-row .cmeta { font-family: var(--font-sans); font-size: 12px; color: var(--text-tertiary); }

.index-cols { columns: 2; column-gap: 48px; margin-top: 22px; }
.index-item { break-inside: avoid; padding: 5px 0; font-size: 16px; }
.index-item .reg { font-family: var(--font-sans); font-size: 11.5px; color: var(--text-tertiary); margin-left: 8px; }

.year-group { margin-top: 30px; }
.year-group h2 { font-family: var(--font-sans); font-size: 22px; font-weight: 600; color: var(--text-primary); border-bottom: var(--hairline) solid var(--border-tertiary); padding-bottom: 8px; }
.year-list { font-size: 16px; line-height: 2; }
.year-list .reg { font-family: var(--font-sans); font-size: 11.5px; color: var(--text-tertiary); margin-left: 8px; }

/* ===== reading view ===== */
.reading h1 { font-size: 30px; font-weight: 500; letter-spacing: -0.01em; line-height: 1.2; margin: 6px 0 6px; }
.reading .subtitle { font-size: 16px; font-style: italic; color: var(--text-secondary); margin: 0 0 14px; }
.reading .lead { font-size: 18px; line-height: 1.8; margin: 22px 0 8px; }
.reading .lead p:first-child::first-letter { font-size: 3.1em; line-height: 0.82; float: left; padding: 6px 10px 0 0; font-weight: 500; color: var(--text-primary); }

figure { margin: 30px 0; }
figure .photo-frame { position: relative; border: var(--hairline) solid var(--border-tertiary); border-radius: var(--radius-md); overflow: hidden; background: var(--bg-secondary); }
figure img.photo { width: 100%; height: auto; cursor: zoom-in; opacity: 0; transition: opacity 0.6s ease; }
figure img.photo.loaded { opacity: 1; }
figcaption { font-size: 17px; line-height: 1.75; color: var(--text-primary); margin-top: 12px; }
figcaption p { margin: 0 0 12px; }
figcaption p:last-child { margin-bottom: 0; }
.present-affordance {
  position: absolute; right: 10px; bottom: 10px; font-family: var(--font-sans); font-size: 11px;
  background: color-mix(in srgb, var(--present-field) 70%, transparent); color: #f4efe6; border: none;
  padding: 5px 10px; border-radius: var(--radius-md); cursor: pointer; opacity: 0; transition: opacity 0.2s;
}
figure:hover .present-affordance, .present-affordance:focus { opacity: 1; }

/* layout variants (desktop) */
@media (min-width: 641px) {
  figure.narrow .photo-frame { width: 60%; margin: 0 auto; }
  figure.narrow figcaption { width: 72%; margin-left: auto; margin-right: auto; }
  figure.beside_text { display: grid; grid-template-columns: 38% 1fr; gap: 22px; align-items: start; }
  figure.beside_text figcaption { margin-top: 0; }
  figure.wide.bleed .photo-frame { width: calc(100% + 120px); margin-left: -60px; }
}
@media (min-width: 641px) and (max-width: 1024px) {
  figure.wide.bleed .photo-frame { width: 100%; margin-left: 0; }
}

.chapter-foot { margin-top: 56px; padding-top: 24px; border-top: var(--hairline) solid var(--border-tertiary); font-family: var(--font-sans); }
.foot-nav { display: flex; justify-content: space-between; gap: 16px; }
.foot-nav a { display: block; max-width: 46%; font-size: 14px; }
.foot-nav .lbl { font-size: 11px; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 0.06em; }
.foot-nav .ttl { font-family: var(--font-serif); font-size: 17px; color: var(--text-primary); }
.more-region { margin-top: 30px; font-size: 14px; color: var(--text-secondary); }

/* ===== present mode ===== */
#present { position: fixed; inset: 0; z-index: 80; background: var(--present-field); display: none; }
#present.open { display: flex; flex-direction: column; }
#present .stage { flex: 1; display: flex; align-items: center; justify-content: center; min-height: 0; padding: 24px; }
#present .stage img { max-width: 100%; max-height: 100%; object-fit: contain; box-shadow: 0 20px 60px rgba(0,0,0,0.5); }
#present .pcaption { color: #e9e2d4; font-family: var(--font-serif); font-size: 16px; line-height: 1.7; max-width: 760px; margin: 0 auto; padding: 14px 28px 26px; text-align: center; }
#present .pcaption a { color: #e6c79c; }
#present .counter { position: absolute; top: 18px; right: 22px; color: #b8b0a0; font-family: var(--font-sans); font-size: 13px; }
#present .pclose { position: absolute; top: 12px; left: 18px; background: none; border: none; color: #c9c1b1; font-size: 26px; cursor: pointer; line-height: 1; }
#present .pnav { position: absolute; top: 50%; transform: translateY(-50%); background: none; border: none; color: #ddd5c6; font-size: 44px; cursor: pointer; padding: 10px 18px; opacity: 0.7; }
#present .pnav:hover { opacity: 1; }
#present .pprev { left: 4px; } #present .pnext { right: 4px; }
@media (min-width: 900px) {
  #present.landscape-caption { flex-direction: row; }
}

/* status pill (used on draft preview) */
.pill { font-family: var(--font-sans); font-size: 11px; font-weight: 500; padding: 2px 9px; border-radius: 999px; }
.pill.draft { background: var(--accent-warning-bg); color: var(--accent-warning-text); }

/* search */
.search-result { padding: 16px 0; border-top: var(--hairline) solid var(--border-tertiary); }
.search-result h3 { font-size: 19px; font-weight: 500; margin: 0 0 3px; }
.search-result .cmeta { font-family: var(--font-sans); font-size: 12px; color: var(--text-tertiary); }
.search-result .snip { color: var(--text-secondary); font-size: 15px; margin-top: 4px; }
mark { background: var(--accent-warning-bg); color: var(--accent-warning-text); padding: 0 2px; border-radius: 2px; }

.empty { color: var(--text-secondary); font-style: italic; padding: 40px 0; }

footer.site-foot { border-top: var(--hairline) solid var(--border-tertiary); margin-top: 60px; padding: 30px 24px 60px; }
.site-foot-inner { max-width: 1100px; margin: 0 auto; font-family: var(--font-sans); font-size: 13px; color: var(--text-tertiary); display: flex; gap: 24px; flex-wrap: wrap; }
.site-foot-inner a { color: var(--text-secondary); }

/* ===== responsive ===== */
@media (max-width: 880px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) {
  body { font-size: 17px; }
  .page, .reading { padding-left: 18px; padding-right: 18px; }
  .site-header-inner { padding: 10px 16px; gap: 14px; }
  .nav { display: none; }
  .header-search input { width: 120px; }
  .hero-block { padding: 36px 0 20px; }
  .hero-block h1 { font-size: 30px; }
  .continent-grid { grid-template-columns: 1fr; gap: 0 0; }
  .card-grid { grid-template-columns: 1fr; }
  .index-cols { columns: 1; }
  figure.narrow .photo-frame, figure.narrow figcaption,
  figure.beside_text { width: auto; display: block; grid-template-columns: none; }
  figure.beside_text figcaption { margin-top: 12px; }
  figure img.photo { cursor: pointer; }
  .present-affordance { display: none; }
  #present .pnav { font-size: 34px; padding: 8px 10px; }
}
@media (prefers-reduced-motion: reduce) {
  figure img.photo { transition: none; opacity: 1; }
  .card .frame img { transition: none; }
}