/* ===== DEEP DIVE PAGES STYLE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #0a0806;
  --color-bg-alt: #12100c;
  --color-bg-card: #1a1510;
  --color-gold: #c9a96e;
  --color-gold-light: #e8c98a;
  --color-gold-dark: #9a7a4a;
  --color-cream: #f5f0e8;
  --color-cream-dim: #c8bfb4;
  --color-bergamot: #7ab648;
  --color-bergamot-light: #a8d470;
  --color-blue: #5b7ec9;
  --color-text-dim: #8a8078;
  --color-border: #2a2418;
  --color-border-light: #3a3020;
  --font-serif: 'Noto Serif JP', Georgia, serif;
  --font-sans: 'Noto Sans JP', Arial, sans-serif;
  --font-display: 'Playfair Display', Georgia, serif;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--color-bg);
  color: var(--color-cream-dim);
  font-family: var(--font-sans);
  line-height: 1.9;
  overflow-x: hidden;
}

/* ===== NAV ===== */
.deep-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 8, 6, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.back-link {
  color: var(--color-gold);
  text-decoration: none;
  font-size: 0.85rem;
  font-family: var(--font-sans);
  transition: color 0.3s;
}

.back-link:hover {
  color: var(--color-gold-light);
}

.deep-nav-label {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  font-family: var(--font-sans);
}

/* ===== ARTICLE ===== */
.deep-article {
  max-width: 800px;
  margin: 0 auto;
  padding: 60px 24px 100px;
}

/* ===== HEADER ===== */
.deep-header {
  margin-bottom: 60px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--color-border);
}

.deep-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 1.5rem;
  font-family: var(--font-sans);
}

.deep-header h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--color-cream);
  line-height: 1.35;
  margin-bottom: 1.5rem;
}

.deep-lead {
  font-size: 1.05rem;
  color: var(--color-cream-dim);
  line-height: 2;
  font-family: var(--font-serif);
  font-style: italic;
}

/* ===== SECTION ===== */
.deep-section {
  margin-bottom: 40px;
}

.deep-section h2 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-cream);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.deep-section h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-gold);
  margin: 1.5rem 0 0.8rem;
}

.deep-section p {
  font-size: 0.97rem;
  color: var(--color-cream-dim);
  line-height: 1.95;
  margin-bottom: 1.2em;
}

.deep-section strong {
  color: var(--color-gold-light);
  font-weight: 700;
}

.deep-section em {
  color: var(--color-bergamot-light);
  font-style: italic;
}

/* ===== LISTS ===== */
.deep-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 1.5rem;
}

.deep-list li {
  padding: 8px 0 8px 20px;
  position: relative;
  font-size: 0.93rem;
  color: var(--color-cream-dim);
  line-height: 1.8;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.deep-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-gold-dark);
}

.deep-list-ordered {
  padding-left: 1.5rem;
  margin: 1rem 0 1.5rem;
}

.deep-list-ordered li {
  font-size: 0.93rem;
  color: var(--color-cream-dim);
  line-height: 1.8;
  margin-bottom: 0.8rem;
  padding-left: 4px;
}

.deep-list-ordered li::marker {
  color: var(--color-gold);
  font-weight: 700;
}

/* ===== FACT BOX ===== */
.fact-box {
  background: rgba(122, 182, 72, 0.06);
  border: 1px solid rgba(122, 182, 72, 0.2);
  border-radius: 6px;
  padding: 20px 24px;
  margin: 2rem 0;
  font-size: 0.85rem;
  color: var(--color-cream-dim);
  line-height: 1.8;
}

.fact-box strong {
  display: block;
  color: var(--color-bergamot-light);
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.fact-box p {
  font-size: 0.85rem;
  margin: 0;
}

/* ===== PATHWAY DIAGRAM ===== */
.pathway-diagram {
  display: flex;
  gap: 16px;
  align-items: center;
  margin: 1.5rem 0;
  flex-wrap: wrap;
}

.pathway-box {
  flex: 1;
  min-width: 200px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  padding: 20px;
}

.pathway-box h3 {
  font-size: 0.9rem;
  color: var(--color-gold);
  margin-bottom: 8px;
  font-family: var(--font-sans);
  font-weight: 700;
}

.pathway-box p {
  font-size: 0.82rem;
  color: var(--color-text-dim);
  line-height: 1.7;
  margin-bottom: 8px;
}

.pathway-product {
  color: var(--color-bergamot) !important;
  font-weight: 600;
  font-size: 0.82rem !important;
}

.pathway-arrow {
  font-size: 1.5rem;
  color: var(--color-gold-dark);
  flex-shrink: 0;
}

/* ===== METHOD GRID ===== */
.method-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin: 1.5rem 0;
}

.method-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 20px;
}

.method-card h3 {
  font-size: 0.9rem;
  color: var(--color-gold);
  margin-bottom: 8px;
  font-family: var(--font-sans);
  font-weight: 700;
}

.method-card p {
  font-size: 0.83rem;
  color: var(--color-text-dim);
  line-height: 1.7;
  margin: 0;
}

/* ===== GENE TABLE ===== */
.gene-table {
  margin: 1.5rem 0;
  overflow-x: auto;
}

.gene-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.gene-table th {
  background: rgba(201, 169, 110, 0.1);
  color: var(--color-gold);
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-sans);
  white-space: nowrap;
}

.gene-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-cream-dim);
  line-height: 1.5;
}

.gene-table tr:last-child td {
  border-bottom: none;
}

.gene-table tr:hover td {
  background: rgba(255,255,255,0.02);
}

/* ===== COMPOUND LIST ===== */
.compound-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 1.5rem 0;
}

.compound-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 18px;
}

.compound-item h3 {
  font-size: 0.9rem;
  color: var(--color-gold);
  margin-bottom: 8px;
  font-family: var(--font-sans);
  font-weight: 700;
}

.compound-item p {
  font-size: 0.82rem;
  color: var(--color-text-dim);
  line-height: 1.7;
  margin: 0;
}

/* ===== REACTION BOX ===== */
.reaction-box {
  background: rgba(91, 126, 201, 0.08);
  border: 1px solid rgba(91, 126, 201, 0.2);
  border-radius: 6px;
  padding: 20px 24px;
  margin: 1.5rem 0;
  text-align: center;
}

.reaction-box p {
  font-size: 0.9rem;
  color: var(--color-cream-dim);
  margin-bottom: 8px;
  font-family: var(--font-sans);
}

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

.reaction-box strong {
  color: var(--color-gold-light);
}

/* ===== CTA ===== */
.deep-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
}

.deep-btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: var(--color-bg);
  padding: 12px 28px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.9rem;
  transition: all 0.3s;
  font-family: var(--font-sans);
  text-decoration: none;
}

.deep-btn:hover {
  background: linear-gradient(135deg, var(--color-gold-light) 0%, var(--color-gold) 100%);
  color: var(--color-bg);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(201, 169, 110, 0.25);
}

.deep-btn-outline {
  display: inline-block;
  background: transparent;
  border: 1px solid var(--color-gold);
  color: var(--color-gold);
  padding: 12px 28px;
  border-radius: 4px;
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.3s;
  font-family: var(--font-sans);
  text-decoration: none;
}

.deep-btn-outline:hover {
  background: rgba(201, 169, 110, 0.1);
  color: var(--color-gold-light);
}

/* ===== SELECTION ===== */
::selection {
  background: rgba(201, 169, 110, 0.3);
  color: var(--color-cream);
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-gold-dark); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .deep-article {
    padding: 40px 20px 80px;
  }

  .pathway-diagram {
    flex-direction: column;
  }

  .pathway-arrow {
    transform: rotate(90deg);
  }

  .method-grid {
    grid-template-columns: 1fr;
  }

  .compound-list {
    grid-template-columns: 1fr;
  }

  .deep-cta {
    flex-direction: column;
  }
}