:root {
  --ink: #111111;
  --paper: #f7f6f2;
  --paper-mid: #f0ede8;
  --border: #e8e8e4;
  --dim: #999999;
  --accent-red: #c44a32;
  --accent-blue: #2c5fb6;

  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --font-serif: 'IM Fell English', Georgia, serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }

/* ─────── topbar ─────── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px 12px;
  border-bottom: 1.5px solid var(--ink);
}
.topbar .brand {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.topbar nav {
  display: flex;
  gap: 22px;
  font-family: var(--font-sans);
  font-size: 12px;
  color: #555;
}
.topbar nav a:hover { color: var(--accent-red); }
.topbar nav a.active { color: var(--ink); }

.breadcrumb {
  padding: 8px 28px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--dim);
  border-bottom: 1px solid var(--border);
}

/* ─────── layout ─────── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 36px 28px 80px;
}
.container.wide { max-width: 1280px; }

.page-title {
  font-family: var(--font-serif);
  font-size: 38px;
  font-weight: normal;
  margin-bottom: 4px;
}
.page-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--dim);
  margin-bottom: 36px;
  letter-spacing: 0.02em;
}

/* ─────── object cards grid ─────── */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: #ddd;
  border: 1px solid #ddd;
}
.card {
  background: var(--paper);
  padding: 22px 22px 16px;
  display: flex;
  flex-direction: column;
  min-height: 220px;
  position: relative;
  transition: background 0.15s ease;
}
.card:hover { background: #fbfaf7; }
.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 18px;
}
.card-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  color: #bbb;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.card-arrow {
  font-family: var(--font-mono);
  font-size: 14px;
  color: #ddd;
  transition: color 0.15s ease;
}
.card:hover .card-arrow { color: var(--accent-red); }
.card-glyph {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 40px;
  line-height: 1;
  margin-bottom: 16px;
}
.card-title {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 13px;
  margin-bottom: 4px;
}
.card-desc {
  font-family: var(--font-sans);
  font-size: 11px;
  color: #777;
  line-height: 1.5;
  flex: 1;
}
.card-num {
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px dashed #ddd;
  font-family: var(--font-mono);
  font-size: 10px;
  color: #bbb;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ─────── directory view ─────── */
.dir {
  border-top: 1px solid var(--border);
}
.dir-head, .dir-row {
  display: grid;
  grid-template-columns: 60px 1fr 160px 120px;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 0.5px solid var(--border);
}
.dir-head {
  background: var(--paper-mid);
  font-family: var(--font-mono);
  font-size: 9px;
  color: #bbb;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.dir-row { transition: background 0.12s ease; }
.dir-row:hover { background: #edecea; }
.dir-glyph {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 22px;
}
.dir-name {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
}
.dir-sub {
  font-family: var(--font-sans);
  font-size: 11px;
  color: #888;
  margin-top: 2px;
}
.dir-cat, .dir-date {
  font-family: var(--font-mono);
  font-size: 10px;
  color: #888;
}

/* ─────── object page ─────── */
.obj-header {
  display: flex;
  align-items: baseline;
  gap: 22px;
  margin-bottom: 28px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
}
.obj-glyph {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 88px;
  line-height: 1;
  color: var(--ink);
}
.obj-title {
  font-family: var(--font-serif);
  font-size: 30px;
}
.obj-subtitle {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--dim);
  margin-top: 6px;
  letter-spacing: 0.04em;
}

table.meta {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 40px;
}
table.meta td {
  padding: 9px 0;
  border-bottom: 0.5px solid var(--border);
  vertical-align: top;
}
table.meta td.k {
  font-family: var(--font-mono);
  font-size: 10px;
  color: #bbb;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  width: 180px;
  padding-right: 16px;
}
table.meta td.v {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink);
}
table.meta td.v.mono { font-family: var(--font-mono); font-size: 12px; }

/* essay grid: text + margin */
.essay {
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: 40px;
}
.essay-body {
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.75;
  color: #1a1a1a;
}
.essay-body p { margin-bottom: 1.1em; }
.essay-body p.first::first-letter {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 56px;
  line-height: 0.9;
  float: left;
  padding: 6px 10px 0 0;
  color: var(--accent-red);
}
.essay-body blockquote {
  border-left: 2px solid var(--accent-red);
  padding: 4px 0 4px 18px;
  margin: 1.4em 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 20px;
  line-height: 1.5;
  color: #333;
}
.essay-body em.fn {
  font-style: normal;
  color: var(--accent-red);
  font-family: var(--font-mono);
  font-size: 9px;
  vertical-align: super;
  margin-left: 2px;
}
.essay-margin {
  border-left: 1px solid var(--border);
  padding-left: 18px;
}
.essay-margin .note {
  margin-bottom: 22px;
}
.essay-margin .note .n {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--accent-red);
  display: block;
  margin-bottom: 4px;
}
.essay-margin .note .t {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 11px;
  color: #888;
  line-height: 1.55;
}

/* ─────── essay archive ─────── */
.essay-list { border-top: 1px solid var(--border); }
.essay-item {
  display: grid;
  grid-template-columns: 100px 1fr 120px;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 0.5px solid var(--border);
}
.essay-item .date {
  font-family: var(--font-mono);
  font-size: 10px;
  color: #bbb;
}
.essay-item .ttl {
  font-family: var(--font-serif);
  font-size: 19px;
}
.essay-item .ttl .sub {
  font-family: var(--font-sans);
  font-size: 11px;
  color: #888;
  display: block;
  margin-top: 4px;
}
.essay-item .tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: #888;
  text-align: right;
}

/* ─────── sketches / track page ─────── */
.track-links {
  display: flex;
  gap: 24px;
  margin: 18px 0 32px;
}
.track-links a {
  font-family: var(--font-mono);
  font-size: 12px;
  border-bottom: 1px solid var(--accent-red);
  padding-bottom: 2px;
}
.track-links a:hover { color: var(--accent-red); }

.code {
  background: #0c0c0d;
  color: #ededea;
  border-left: 2px solid var(--accent-red);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  padding: 22px 26px;
  overflow-x: auto;
  margin: 22px 0;
}
.code .kw { color: var(--accent-blue); }
.code .str { color: var(--accent-red); }
.code .cm { color: #555; font-style: italic; }

/* ─────── man page ─────── */
.man {
  font-family: var(--font-mono);
  max-width: 820px;
  margin: 0 auto;
}
.man-bar {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #888;
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
  margin-bottom: 28px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.man-bar.bottom {
  border-bottom: none;
  border-top: 1px solid var(--border);
  margin: 36px 0 0;
}
.man h2 {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent-red);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  margin: 26px 0 10px;
}
.man section p,
.man section .body {
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.7;
  color: #1a1a1a;
  margin-bottom: 0.9em;
}
.man table.files {
  width: 100%;
  border-collapse: collapse;
  margin-top: 6px;
}
.man table.files td {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 5px 12px 5px 0;
  vertical-align: top;
}
.man table.files td.k { color: #bbb; width: 220px; }
.man table.files td.v { color: var(--ink); }

/* ─────── footer ─────── */
.footer {
  border-top: 1.5px solid var(--ink);
  display: flex;
  justify-content: space-between;
  padding: 14px 28px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: #bbb;
}

/* ─────── section dividers / related ─────── */
.section-divider {
  border: none;
  border-top: 1.5px solid #111;
  margin: 48px 0;
}
.section-divider-soft {
  border: none;
  border-top: 1px solid #ddd;
  margin: 40px 0;
}
.essay-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: #bbb;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.essay-title {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: normal;
  line-height: 1.2;
  margin-bottom: 10px;
  max-width: 720px;
}
.essay-title em {
  font-style: italic;
  color: var(--accent-red);
}
.essay-lead {
  font-family: var(--font-sans);
  font-size: 13px;
  color: #777;
  line-height: 1.55;
  max-width: 620px;
  margin-bottom: 32px;
}
.related {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.related-label {
  font-family: var(--font-mono);
  font-size: 9px;
  color: #bbb;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.related-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.related-link {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-size: 13px;
}
.related-link-type {
  font-family: var(--font-mono);
  font-size: 9px;
  color: #bbb;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  min-width: 56px;
}
.related-link a {
  color: #111;
  text-decoration: none;
  border-bottom: 1px solid var(--accent-red);
  font-family: var(--font-mono);
  font-size: 12px;
  padding-bottom: 1px;
}
.related-link a:hover { color: var(--accent-red); }

/* ─────── symbols gallery ─────── */
.symbol-tile {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border: 1px solid var(--border);
  cursor: pointer;
  position: relative;
  transition: border-color 0.15s, background 0.15s;
  min-width: 56px;
  text-align: center;
  text-decoration: none;
}
.symbol-tile:hover { background: var(--paper-mid); }
.symbol-glyph {
  font-family: var(--font-serif);
  font-style: italic;
  line-height: 1;
  display: block;
}
.symbol-type-label {
  font-family: var(--font-mono);
  font-size: 7px;
  color: #ccc;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 6px;
  display: block;
}
.symbol-connections {
  position: absolute;
  top: 3px;
  right: 5px;
  font-family: var(--font-mono);
  font-size: 7px;
  color: #ddd;
}
.symbol-tooltip {
  position: fixed;
  background: #111;
  color: #f7f6f2;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  pointer-events: none;
  z-index: 1000;
  display: none;
  white-space: nowrap;
  border-left: 2px solid var(--accent-red);
}
.symbols-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 32px;
}
.unicode-row { margin-bottom: 20px; }
.unicode-row-label {
  font-family: var(--font-mono);
  font-size: 9px;
  color: #bbb;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.unicode-chars {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  line-height: 1;
}
.uc {
  font-family: var(--font-serif);
  font-size: 18px;
  padding: 4px 6px;
  color: #ddd;
  cursor: default;
  border: 1px solid transparent;
  text-decoration: none;
  display: inline-block;
}
.uc.active {
  cursor: pointer;
  border-color: var(--border);
}
.uc.active:hover { background: var(--paper-mid); }
.symbols-section-label {
  font-family: var(--font-mono);
  font-size: 9px;
  color: #bbb;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 24px 0 14px;
}
.symbols-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: #999;
  margin-top: 18px;
}
.symbols-legend .lg {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.symbols-legend .lg .dot {
  width: 8px; height: 8px; border-radius: 50%;
}

/* ─────── backlinks ─────── */
.backlinks { margin-top: 32px; }

/* ─────── visuals ─────── */
.visual-canvas {
  margin: 0 -40px;
  background: #0c0c0d;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 40px;
}
.visual-canvas.light { background: var(--paper); }

.visual-meta {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 48px;
  margin-top: 0;
}
.visual-description {
  font-size: 14px;
  line-height: 1.75;
  color: #333;
}
.visual-params {
  font-family: var(--font-mono);
  font-size: 11px;
  color: #bbb;
  line-height: 1.7;
}
.visual-params .row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 0.5px solid var(--border);
  padding: 4px 0;
}
.visual-params .row span:last-child { color: #555; }

.visual-controls {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-top: 1px solid var(--border);
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: #bbb;
  flex-wrap: wrap;
}
.visual-controls button {
  background: transparent;
  border: 1px solid #ddd;
  color: #888;
  padding: 4px 12px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
}
.visual-controls button:hover { border-color: #111; color: #111; }
.visual-controls input[type=range] {
  width: 100px;
  height: 1px;
  -webkit-appearance: none;
  appearance: none;
  background: #ddd;
  outline: none;
}
.visual-controls input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 10px;
  height: 10px;
  background: #111;
  border-radius: 0;
  cursor: pointer;
}
.visual-controls .read {
  color: #888;
  font-variant-numeric: tabular-nums;
}

.visual-header {
  margin-bottom: 28px;
}
.visual-header .num {
  font-family: var(--font-mono);
  font-size: 9px;
  color: #bbb;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.visual-header .ttl {
  font-family: var(--font-sans);
  font-size: 28px;
  font-weight: 500;
  margin-bottom: 4px;
}
.visual-header .lead {
  font-family: var(--font-sans);
  font-size: 13px;
  color: #777;
  max-width: 620px;
  line-height: 1.55;
}

@media (max-width: 768px) {
  .visual-canvas { margin: 0 -16px; padding: 16px; }
  .visual-meta { grid-template-columns: 1fr; gap: 24px; }
}

/* ─────── responsive ─────── */
@media (max-width: 768px) {
  .topbar { padding: 12px 16px; flex-wrap: wrap; gap: 8px; }
  .topbar nav { gap: 14px; font-size: 11px; }
  .breadcrumb { padding: 8px 16px; }
  .container { padding: 24px 16px 60px; }
  .cards { grid-template-columns: 1fr; }
  .essay { grid-template-columns: 1fr; }
  .essay-margin { display: none; }
  .obj-header { flex-direction: column; gap: 8px; }
  .obj-glyph { font-size: 64px; }
  .dir-head, .dir-row {
    grid-template-columns: 40px 1fr 80px;
  }
  .dir-head .dir-cat, .dir-row .dir-cat { display: none; }
  .essay-item { grid-template-columns: 80px 1fr; }
  .essay-item .tag { display: none; }
  .footer { padding: 12px 16px; flex-direction: column; gap: 4px; }
}