:root {
  --bg:          #d9cdb0;
  --sb-bg:       #cfc2a2;
  --surface:     #e4dac1;
  --surface-2:   #d1c4a4;
  --border:      #bcaa83;
  --border-2:    #a8956f;
  --accent:      #97783f;
  --accent-b:    #7a5d27;
  --accent-dim:  rgba(151,120,63,0.12);
  --text:        #0f0c08;
  --text-2:      #1a1610;
  --text-3:      #3d3426;
  --green:       #5f7048;
  --sb-w:        260px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 2px; }

/* ── Sidebar ─────────────────────────────── */
.p-sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--sb-w);
  background: var(--sb-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 2rem 1.25rem;
  z-index: 100;
}

.p-back {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.76rem;
  color: var(--text-2);
  text-decoration: none;
  margin-bottom: 2rem;
  padding: 0.45rem 0.6rem;
  border-radius: 4px;
  transition: color 0.15s ease, background 0.15s ease;
}
.p-back:hover { color: var(--accent-b); background: var(--accent-dim); }

.p-nav-label {
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 0.65rem;
  padding-left: 0.6rem;
}

.p-nav { display: flex; flex-direction: column; gap: 0.05rem; flex: 1; overflow-y: auto; }

.p-nav-link {
  display: block;
  padding: 0.48rem 0.6rem;
  font-size: 0.78rem;
  color: var(--text-2);
  text-decoration: none;
  border-radius: 4px;
  border-left: 2px solid transparent;
  transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.p-nav-link:hover { color: var(--text); background: rgba(0,0,0,0.04); }
.p-nav-link.active {
  color: var(--accent-b);
  background: var(--accent-dim);
  border-left-color: var(--accent);
  font-weight: 500;
}

.p-sidebar-footer {
  margin-top: auto;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border);
  font-size: 0.67rem;
  color: var(--text-3);
}

/* ── Main ────────────────────────────────── */
.p-main {
  margin-left: var(--sb-w);
  min-height: 100vh;
}

.p-container {
  max-width: 820px;
  margin: 0 auto;
  padding: 3.5rem 3rem 5rem;
}

.p-num { font-size: 0.64rem; color: var(--text-3); margin-bottom: 0.4rem; }

.p-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 700;
  font-style: italic;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--text);
  margin-bottom: 1rem;
}

.p-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.chip {
  display: inline-block;
  font-size: 0.67rem;
  font-weight: 500;
  color: var(--accent-b);
  border: 1px solid var(--border-2);
  background: var(--accent-dim);
  padding: 0.18rem 0.55rem;
  border-radius: 4px;
}

.p-status {
  font-size: 0.62rem;
  color: var(--text-3);
  border: 1px solid var(--border);
  padding: 0.18rem 0.55rem;
  border-radius: 4px;
}

/* ── Hero visual ─────────────────────────── */
.p-hero {
  border: 1px solid var(--border);
  border-radius: 5px;
  overflow: hidden;
  background: var(--surface);
  margin-bottom: 3rem;
  aspect-ratio: 16/9;
  position: relative;
}
.p-lb-trigger { cursor: pointer; }
.p-lb-trigger:hover img,
.p-lb-trigger:hover video { transform: scale(1.02); }
.p-hero img,
.p-hero video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.35s ease;
}

.p-hero-contain img {
  object-fit: contain;
  background: var(--surface-2);
}

.p-hero-contain.p-hero-square {
  aspect-ratio: 1 / 1;
  max-width: min(100%, 520px);
  margin-left: auto;
  margin-right: auto;
}
.p-hero-contain.p-hero-square img {
  padding: 5%;
  box-sizing: border-box;
}

.p-hero-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  background: var(--surface-2);
  color: var(--text-3);
}

.p-hero-badge {
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1px solid var(--border);
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
}

/* ── Sections ────────────────────────────── */
.p-section { margin-bottom: 4rem; }
.p-section + .p-section { padding-top: 0.25rem; }

.p-sec-label {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.35rem, 2.8vw, 1.6rem);
  font-weight: 700;
  font-style: normal;
  letter-spacing: -0.02em;
  line-height: 1.2;
  text-transform: none;
  color: var(--text);
  margin-bottom: 1.35rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-2);
  display: block;
}

.p-body { color: var(--text); font-size: 0.95rem; line-height: 1.85; }
.p-body p + p { margin-top: 1rem; }

.p-doc > * + * { margin-top: 1.5rem; }
.p-doc .katex { color: var(--text); }
.p-doc .katex-display { margin: 0.85rem 0 1.15rem; overflow-x: auto; overflow-y: hidden; padding: 0.35rem 0; }
.p-subhead {
  font-family: 'Inter', sans-serif;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.015em;
  line-height: 1.45;
  padding-left: 0.85rem;
  border-left: 3px solid var(--accent);
}
.p-doc .p-subhead {
  margin: 2.5rem 0 0.65rem;
  padding-top: 0;
}
.p-doc .p-pre + .p-subhead,
.p-doc .p-body + .p-subhead,
.p-doc .p-table-wrap + .p-subhead,
.p-doc .p-doc-figure + .p-subhead {
  margin-top: 3rem;
}
.p-doc .p-body + .p-pre {
  margin-top: 1.1rem;
}
.p-doc .p-pre + .p-body {
  margin-top: 1rem;
}
.p-doc .p-pre + .p-pre {
  margin-top: 1.15rem;
}

.p-doc-figure {
  border: 1px solid var(--border);
  border-radius: 5px;
  overflow: hidden;
  background: var(--surface);
  margin: 0;
}
.p-doc-figure-btn {
  display: block;
  width: 100%;
  border: none;
  padding: 0;
  margin: 0;
  background: none;
  cursor: pointer;
  font-family: inherit;
}
.p-doc-figure img {
  width: 100%;
  display: block;
  transition: transform 0.35s ease;
}
.p-doc-figure-btn:hover img { transform: scale(1.02); }
.p-doc-figure--contain img {
  object-fit: contain;
  background: var(--surface-2);
  padding: 1.25rem;
  max-height: 520px;
}
.p-doc-figure--wide.p-doc-figure--contain img {
  max-height: none;
}
.p-doc-figure--wide {
  width: 100%;
  max-width: none;
  margin-left: 0;
  transform: none;
}
.p-doc-figure--wide img {
  max-height: none;
  height: auto;
  padding: 0.5rem;
}
.p-doc-figure-group .p-doc-figure-btn + .p-doc-figure-btn {
  border-top: 1px solid var(--border);
}
.p-doc-figure-stack {
  cursor: pointer;
}
.p-doc-figure-stack img {
  width: 100%;
  display: block;
  transition: transform 0.35s ease;
}
.p-doc-figure-stack img + img {
  border-top: 1px solid var(--border);
}
.p-doc-figure-group.p-doc-figure--contain .p-doc-figure-stack img {
  object-fit: contain;
  background: var(--surface-2);
  padding: 0.5rem;
}
.p-doc-figure-stack:hover img {
  transform: scale(1.01);
}
.p-doc-caption {
  font-size: 0.72rem;
  color: var(--text-3);
  padding: 0.65rem 1rem;
  border-top: 1px solid var(--border);
  text-align: center;
  line-height: 1.5;
}
.p-doc-figure + .p-gallery-hint {
  margin-top: 2rem;
}
.p-gallery-hint {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.75rem;
  line-height: 1.5;
}
.p-gallery-preview .p-doc-figure-btn {
  cursor: pointer;
}
.p-gallery-preview .p-doc-figure-btn:hover img {
  transform: scale(1.02);
}

/* ── RTL module strip ────────────────────── */
.p-rtl-gallery {
  width: 100%;
  max-width: none;
  margin: 0;
}
.p-rtl-label {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin: 0;
}
.p-rtl-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}
.p-rtl-hint {
  font-size: 0.68rem;
  color: var(--text-3);
  white-space: nowrap;
}
.p-rtl-scroll {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-left: 0.25rem;
  -webkit-overflow-scrolling: touch;
  padding: 0.25rem 0.25rem 0.85rem;
  margin: 0 -0.25rem;
}
.p-rtl-scroll::-webkit-scrollbar { height: 5px; }
.p-rtl-scroll::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 3px; }
.p-rtl-item {
  flex: 0 0 min(88%, 440px);
  scroll-snap-align: start;
  display: block;
  border: 1px solid var(--border);
  border-radius: 5px;
  overflow: hidden;
  background: var(--surface);
  cursor: pointer;
  padding: 0;
  font-family: inherit;
  text-align: left;
  position: relative;
}
.p-rtl-item img {
  width: 100%;
  height: auto;
  display: block;
  background: var(--surface-2);
  object-fit: contain;
  transition: transform 0.35s ease;
}
.p-rtl-item:hover img { transform: scale(1.02); }
.p-rtl-caption {
  display: block;
  font-size: 0.72rem;
  color: var(--text-2);
  padding: 0.6rem 0.85rem;
  border-top: 1px solid var(--border);
  line-height: 1.4;
}

.p-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.p-stat {
  background: var(--surface);
  padding: 1.25rem 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.p-stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1;
}
.p-stat-label {
  font-size: 0.72rem;
  color: var(--text-2);
  line-height: 1.45;
}

.p-specs {
  border: 1px solid var(--border);
  border-radius: 5px;
  overflow: hidden;
}

.p-spec-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.72rem 1.1rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  font-size: 0.86rem;
}
.p-spec-row:last-child { border-bottom: none; }
.p-spec-row:nth-child(even) { background: var(--surface-2); }
.p-spec-label { color: var(--text-3); flex-shrink: 0; }
.p-spec-value { color: var(--text); text-align: right; }

.p-table-wrap {
  border: 1px solid var(--border);
  border-radius: 5px;
  overflow-x: auto;
  background: var(--surface);
}

.p-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.79rem;
  min-width: 480px;
}

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

.p-table th {
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  background: var(--surface-2);
}

.p-table tr:last-child td { border-bottom: none; }
.p-table tbody tr:nth-child(even) td { background: rgba(0,0,0,0.025); }
.p-table td:first-child { color: var(--accent-b); font-family: 'Courier New', monospace; font-size: 0.76rem; }
.p-table--2col td:first-child { color: var(--text-3); font-family: inherit; font-size: 0.79rem; }

.p-callout {
  border-left: 2px solid var(--accent);
  padding: 0.85rem 1.1rem;
  background: var(--surface);
  border-radius: 0 4px 4px 0;
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.8;
}

.p-pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  border-radius: 4px;
  padding: 1.15rem 1.3rem;
  margin-bottom: 0.5rem;
  overflow-x: auto;
  font-family: 'Courier New', monospace;
  font-size: 0.76rem;
  line-height: 1.65;
  color: var(--text-2);
  white-space: pre;
}

.p-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.p-list li {
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.7;
  padding-left: 1.1rem;
  position: relative;
}
.p-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
}

/* ── Gallery ─────────────────────────────── */
.p-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 5px;
  overflow: hidden;
}
@media (max-width: 560px) { .p-gallery { grid-template-columns: 1fr; } }

.p-gallery-item {
  background: var(--surface);
  cursor: pointer;
  aspect-ratio: 16/10;
  overflow: hidden;
  position: relative;
  border: none;
  padding: 0;
  font-family: inherit;
}
.p-gallery-item img,
.p-gallery-item video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.35s ease;
}
.p-gallery-item:hover img,
.p-gallery-item:hover video { transform: scale(1.03); }

.p-gallery-caption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 0.5rem 0.75rem;
  font-size: 0.67rem;
  color: var(--text-2);
  background: linear-gradient(transparent, rgba(0,0,0,0.75));
  pointer-events: none;
}

/* ── Links ───────────────────────────────── */
.p-links { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.p-top-links { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0 0 1.75rem; }

.p-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--text-2);
  text-decoration: none;
  border: 1px solid var(--border-2);
  border-radius: 3px;
  padding: 0.45rem 0.85rem;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.p-link:hover { color: var(--accent-b); border-color: var(--accent); background: var(--accent-dim); }
.p-link--primary { background: var(--text); color: var(--bg); border-color: var(--text); }
.p-link--primary:hover { background: #1c150d; color: #f3ecdb; border-color: #1c150d; }
.p-gallery-link { cursor: pointer; font-family: inherit; }

/* ── Lightbox ────────────────────────────── */
#lightbox {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(0,0,0,0.95);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
#lightbox.open { opacity: 1; pointer-events: all; }

.lb-header {
  position: absolute;
  top: 0; left: 0; right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.lb-title { font-size: 0.88rem; font-weight: 500; }
.lb-meta  { font-size: 0.71rem; color: var(--text-3); }
.lb-close {
  width: 32px; height: 32px;
  border-radius: 4px;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lb-close:hover { background: var(--surface-2); }

.lb-img-wrap { max-width: min(90vw, 960px); width: 100%; }
.lb-img-wrap img,
.lb-img-wrap video {
  width: 100%;
  max-height: 70vh;
  object-fit: contain;
  border: 1px solid var(--border);
}

.lb-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 100%;
  padding: 0 0.75rem;
  display: flex;
  justify-content: space-between;
  pointer-events: none;
}
.lb-nav-btn {
  width: 38px; height: 38px;
  border-radius: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-2);
  cursor: pointer;
  pointer-events: all;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lb-nav-btn:hover { background: var(--surface-2); color: var(--text); }

.lb-dots { display: flex; gap: 0.4rem; margin-top: 1rem; }
.lb-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--border-2);
  border: none;
  cursor: pointer;
  padding: 0;
}
.lb-dot.active { background: var(--text-2); }

@media (max-width: 800px) {
  :root { --sb-w: 0px; }
  .p-sidebar { display: none; }
  .p-mobile-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--sb-bg);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.25rem;
  }
  .p-container { padding: 2rem 1.25rem 4rem; }
  .p-doc-figure--wide {
    width: 100%;
    margin-left: 0;
    transform: none;
  }
  .p-rtl-gallery {
    width: 100%;
    margin-left: 0;
    transform: none;
  }
}

.p-mobile-bar { display: none; }
@media (max-width: 800px) { .p-mobile-bar { display: flex; } }