:root {
  --paper-50:  #f7f5ef;
  --paper-100: #efeae0;
  --paper-200: #e3dccd;
  --paper-300: #cfc6b3;
  --paper-500: #847c69;
  --paper-700: #4a4538;
  --paper-900: #1f1c14;
  --ink:       #14181d;
  --ink-soft:  #2c333d;
  --accent:    #0a5a80;
  --accent-2:  #1b8cbf;
  --warn:      #b07300;
  --reject:    #a13b2a;
  --shadow:    0 1px 0 var(--paper-200);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper-50);
  color: var(--ink);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  font-feature-settings: "ss01" on, "cv11" on;
  -webkit-font-smoothing: antialiased;
}

body {
  background-image:
    linear-gradient(to right, rgba(20,24,29,0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(20,24,29,0.025) 1px, transparent 1px);
  background-size: 24px 24px;
  background-position: 0 0;
}

a { color: var(--accent); text-decoration: none; border-bottom: 1px solid rgba(10,90,128,0.25); }
a:hover { color: var(--accent-2); border-bottom-color: var(--accent-2); }

.page { max-width: 920px; margin: 0 auto; padding: 48px 24px 96px; }

/* hero */
.hero { padding: 24px 0 56px; border-bottom: 1px solid var(--paper-200); margin-bottom: 48px; }
.hero h1 { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 56px; font-weight: 600; letter-spacing: -0.02em; margin: 0 0 16px; color: var(--ink); }
.eyebrow { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--paper-500); margin: 0 0 12px; }
.hero p { max-width: 64ch; }

.toc { display: flex; flex-wrap: wrap; gap: 4px 16px; margin-top: 32px; padding: 12px 16px; border: 1px solid var(--paper-300); background: rgba(255,255,255,0.5); align-items: center; }
.toc-label { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--paper-500); margin-right: 8px; }
.toc a { font-size: 13px; border-bottom: none; }

/* sections */
.section { padding: 64px 0 8px; border-top: 1px solid var(--paper-200); margin-top: 32px; }
.section:first-of-type { border-top: 0; padding-top: 16px; margin-top: 0; }
.section-title { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 28px; font-weight: 600; letter-spacing: -0.01em; margin: 0 0 8px; color: var(--ink); display: flex; align-items: baseline; gap: 12px; }
.section-anchor { color: var(--paper-300); font-size: 22px; }
.lead { font-size: 17px; color: var(--ink-soft); max-width: 64ch; margin: 0 0 24px; }
.artifact-h { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--paper-700); margin: 32px 0 16px; }
.muted-line { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--paper-500); margin: 16px 0 8px; }
.muted-line.small { font-size: 12px; letter-spacing: 0; text-transform: none; color: var(--paper-500); margin-top: 24px; }
.muted { color: var(--paper-500); }

/* basic content */
p { max-width: 68ch; margin: 0 0 16px; }
ul.bullet { margin: 0 0 24px; padding-left: 20px; max-width: 68ch; }
ul.bullet li { margin: 0 0 10px; }
blockquote { margin: 0 0 16px; padding: 12px 16px; border-left: 3px solid var(--accent); background: rgba(10,90,128,0.05); font-size: 17px; color: var(--ink-soft); max-width: 68ch; }
code { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 0.92em; background: rgba(20,24,29,0.05); padding: 1px 5px; border-radius: 0; color: var(--ink); }

.stage-list { list-style: none; padding: 0; margin: 0 0 24px; counter-reset: stage; }
.stage-list li { padding: 12px 0; border-bottom: 1px solid var(--paper-200); display: flex; flex-direction: column; gap: 4px; }
.stage-list li:last-child { border-bottom: 0; }
.stage-list strong { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 14px; color: var(--ink); }
.stage-blurb { color: var(--ink-soft); font-size: 15px; max-width: 64ch; }

/* sitemap */
table.sitemap { width: 100%; border-collapse: collapse; margin: 16px 0 24px; font-size: 14px; }
table.sitemap th, table.sitemap td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--paper-200); vertical-align: top; }
table.sitemap th { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--paper-500); font-weight: 600; }
table.sitemap td:first-child { width: 200px; }

/* style cards */
.style-card { display: flex; flex-direction: column; border: 1px solid var(--paper-300); background: var(--paper-100); position: relative; }
.style-card img { display: block; width: 100%; height: auto; }
.style-card .style-meta { padding: 10px 14px; display: flex; justify-content: space-between; align-items: baseline; font-size: 13px; }
.style-card .style-meta strong { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 13px; color: var(--ink); }
.style-card .style-meta span { color: var(--paper-500); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; }
.style-selected { border: 2px solid var(--accent); margin-bottom: 24px; }
.style-tag { position: absolute; top: 8px; left: 8px; font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase; background: var(--accent); color: white; padding: 4px 8px; }
.style-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; margin: 16px 0 24px; }

/* layout figures + thumbs */
.layout-figure { margin: 24px 0; border: 1px solid var(--paper-300); background: white; }
.layout-figure img { display: block; width: 100%; height: auto; }
.layout-figure figcaption { padding: 10px 14px; border-top: 1px solid var(--paper-200); font-size: 13px; color: var(--ink-soft); background: var(--paper-100); }
.layout-thumbs { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
.layout-thumb { display: flex; flex-direction: column; }
.layout-thumb a { border-bottom: none; }
.layout-thumb img { display: block; width: 100%; height: auto; border: 1px solid var(--paper-300); }
.layout-thumb .thumb-cap { display: block; font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 11px; color: var(--paper-500); margin: 4px 0 4px; }

/* component grid */
.comp-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.comp-card { display: flex; flex-direction: column; border: 1px solid var(--paper-300); background: white; }
.comp-card a { border-bottom: none; }
.comp-card img { display: block; width: 100%; height: auto; max-height: 220px; object-fit: contain; background: var(--paper-50); border-bottom: 1px solid var(--paper-200); }
.comp-card .comp-meta { padding: 8px 12px; display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.comp-card strong { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 12px; color: var(--ink); flex: 1 1 auto; }

.badge { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 9px; letter-spacing: 0.1em; text-transform: uppercase; padding: 2px 6px; border: 1px solid var(--paper-300); color: var(--paper-700); background: var(--paper-100); }
.badge.shared { background: var(--accent); color: white; border-color: var(--accent); }
.badge.eval-pass { color: #366c33; border-color: #b9d6b6; background: #eaf3e8; }

/* page screenshots */
.page-img { display: block; width: 100%; height: auto; border: 1px solid var(--paper-300); margin: 0 0 16px; }

/* collapsibles */
.collapse { border: 1px solid var(--paper-300); background: var(--paper-100); margin: 8px 0; }
.collapse[open] { background: white; }
.collapse > summary { padding: 12px 16px; cursor: pointer; user-select: none; list-style: none; display: flex; align-items: baseline; gap: 8px; font-size: 14px; }
.collapse > summary::-webkit-details-marker { display: none; }
.collapse > summary::before { content: "›"; font-family: ui-monospace, monospace; color: var(--paper-500); transition: transform 0.15s ease; display: inline-block; width: 12px; }
.collapse[open] > summary::before { transform: rotate(90deg); }
.collapse > summary strong { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 13px; color: var(--ink); }
.collapse-body { padding: 0 16px 16px; }

/* responsive */
@media (max-width: 720px) {
  .page { padding: 24px 16px 64px; }
  .hero h1 { font-size: 40px; }
  .section-title { font-size: 22px; }
  .toc { flex-direction: column; align-items: flex-start; gap: 6px; }
  table.sitemap td:first-child { width: auto; }
  .layout-thumbs, .style-grid, .comp-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .layout-thumbs, .style-grid, .comp-grid { grid-template-columns: 1fr; }
}