/* ==========================================================================
   TheDependencySeries.com — Editorial Design System
   Deep teal + warm off-white, serif headlines, sans body
   ========================================================================== */

/* ---- Design Tokens ---- */
:root,
[data-theme="light"] {
  /* Surfaces — warm off-white */
  --color-bg: #f8f5ef;
  --color-surface: #fffdf9;
  --color-surface-2: #ffffff;
  --color-surface-offset: #f1ece2;
  --color-divider: #e3dccd;
  --color-border: #d9d0bd;

  /* Text */
  --color-text: #23231f;
  --color-text-muted: #5c5850;
  --color-text-faint: #928c7e;
  --color-text-inverse: #f8f5ef;

  /* Primary — deep teal */
  --color-primary: #0f4c4f;
  --color-primary-hover: #0b3a3c;
  --color-primary-active: #082a2b;
  --color-primary-highlight: #dde8e6;
  --color-primary-soft: #e7efee;

  /* Accent — warm ember/gold for highlights, sparingly */
  --color-accent: #b3672c;
  --color-accent-hover: #96551F;
  --color-accent-highlight: #f2e3d2;

  /* Semantic */
  --color-success: #3f6b3a;
  --color-error: #9a3b3b;

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(20, 30, 28, 0.06);
  --shadow-md: 0 6px 20px rgba(20, 30, 28, 0.08);
  --shadow-lg: 0 16px 40px rgba(20, 30, 28, 0.14);

  --content-narrow: 700px;
  --content-default: 1000px;
  --content-wide: 1240px;

  --font-display: 'Fraunces', 'Iowan Old Style', Georgia, serif;
  --font-body: 'Public Sans', 'Segoe UI', system-ui, sans-serif;
}

[data-theme="dark"] {
  --color-bg: #14191a;
  --color-surface: #191f20;
  --color-surface-2: #1d2426;
  --color-surface-offset: #20282a;
  --color-divider: #2b3436;
  --color-border: #384244;

  --color-text: #eae6dc;
  --color-text-muted: #b1aa9c;
  --color-text-faint: #7c766a;
  --color-text-inverse: #14191a;

  --color-primary: #5aa6a2;
  --color-primary-hover: #79bcb8;
  --color-primary-active: #8fcbc7;
  --color-primary-highlight: #223333;
  --color-primary-soft: #1c2b2b;

  --color-accent: #d69257;
  --color-accent-hover: #e2a771;
  --color-accent-highlight: #33281b;

  --color-success: #7bab72;
  --color-error: #cc7a7a;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
}

/* ---- Type Scale ---- */
:root {
  --text-xs: clamp(0.75rem, 0.72rem + 0.1vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.82rem + 0.2vw, 0.9375rem);
  --text-base: clamp(1rem, 0.95rem + 0.2vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1.05rem + 0.4vw, 1.375rem);
  --text-xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --text-2xl: clamp(2rem, 1.5rem + 2vw, 3rem);
  --text-3xl: clamp(2.5rem, 1.6rem + 3.2vw, 4.25rem);
  --text-hero: clamp(2.75rem, 1.4rem + 4.6vw, 5.25rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
}

/* ---- Reset / Base ---- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background 0.2s ease, color 0.2s ease;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-text);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0;
  font-weight: 600;
}

p { margin: 0 0 1.2em; }
ul, ol { margin: 0; padding: 0; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap;
}

/* ---- Layout Helpers ---- */
.wrap {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding-inline: var(--space-6);
}
.wrap-narrow {
  max-width: var(--content-narrow);
  margin: 0 auto;
  padding-inline: var(--space-6);
}
.wrap-default {
  max-width: var(--content-default);
  margin: 0 auto;
  padding-inline: var(--space-6);
}

.section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
}
.section-tight { padding-block: clamp(var(--space-8), 5vw, var(--space-16)); }

/* ---- Skip link ---- */
.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--color-primary); color: #fff;
  padding: var(--space-2) var(--space-4); z-index: 200; border-radius: var(--radius-sm);
}
.skip-link:focus { left: var(--space-4); top: var(--space-4); }

/* ==========================================================================
   Header / Nav
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-divider);
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: var(--space-6);
}

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}
.logo-mark { color: var(--color-primary); flex-shrink: 0; }
.logo-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-base);
  line-height: 1.1;
  color: var(--color-text);
}
.logo-text .sub {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

.main-nav { display: flex; align-items: center; gap: var(--space-1); }
.main-nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}
.main-nav a:hover { background: var(--color-primary-highlight); color: var(--color-primary); }
.main-nav a[aria-current="page"] { color: var(--color-primary); background: var(--color-primary-highlight); font-weight: 600; }

.nav-actions { display: flex; align-items: center; gap: var(--space-2); }

.theme-toggle {
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  flex-shrink: 0;
}
.theme-toggle:hover { background: var(--color-primary-highlight); color: var(--color-primary); }

.mobile-menu-btn {
  display: none;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
}

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-4) 0 var(--space-6);
  border-top: 1px solid var(--color-divider);
}
.mobile-nav a {
  padding: var(--space-3) var(--space-2);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
}
.mobile-nav a[aria-current="page"] { color: var(--color-primary); font-weight: 700; }

@media (max-width: 880px) {
  .main-nav { display: none; }
  .mobile-menu-btn { display: inline-flex; }
  .mobile-nav.open { display: flex; }
}

@media (max-width: 420px) {
  .nav-row { height: 68px; gap: var(--space-2); }
  .wrap { padding-inline: var(--space-4); }
  .logo-text { font-size: var(--text-sm); }
  .logo-text .sub { display: none; }
  .nav-actions { gap: var(--space-1); }
  .theme-toggle, .mobile-menu-btn { width: 36px; height: 36px; }
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  transition: transform 0.15s, background 0.15s, color 0.15s, border-color 0.15s;
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-hover); transform: translateY(-1px); }
.btn-outline { border-color: var(--color-border); color: var(--color-text); background: transparent; }
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); transform: translateY(-1px); }
.btn-ghost { color: var(--color-primary); background: transparent; padding: var(--space-2) var(--space-3); }
.btn-ghost:hover { background: var(--color-primary-highlight); }
.btn svg { flex-shrink: 0; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32)) clamp(var(--space-12), 6vw, var(--space-20));
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-16);
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  border: 1px solid color-mix(in srgb, var(--color-accent) 40%, transparent);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-4);
  margin-bottom: var(--space-6);
  background: var(--color-accent-highlight);
}
.hero h1 {
  font-size: clamp(2.25rem, 1.4rem + 3.4vw, 3.75rem);
  margin-bottom: var(--space-6);
}
.hero h1 em {
  font-style: italic;
  color: var(--color-primary);
}
.hero-lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 46ch;
  margin-bottom: var(--space-8);
  line-height: 1.6;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-4); }

.hero-visual {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/5;
}
.hero-visual img { width: 100%; height: 100%; object-fit: cover; }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: var(--space-10); }
  .hero-visual { order: -1; aspect-ratio: 16/10; }
}

/* ==========================================================================
   Stat bar
   ========================================================================== */
.stat-bar {
  background: var(--color-primary);
  color: #fff;
}
.stat-bar-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  padding-block: var(--space-10);
}
.stat-item { text-align: left; }
.stat-value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  line-height: 1.05;
  display: block;
  margin-bottom: var(--space-2);
}
.stat-label {
  font-size: var(--text-sm);
  opacity: 0.85;
  line-height: 1.4;
  max-width: 22ch;
}
.stat-footnote {
  font-size: var(--text-xs);
  opacity: 0.65;
  padding-bottom: var(--space-6);
  max-width: 90ch;
  line-height: 1.6;
}
.stat-footnote a { text-decoration: underline; color: #fff; }

@media (max-width: 880px) {
  .stat-bar-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
}

/* ==========================================================================
   Section headers
   ========================================================================== */
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}
.section-head h2 {
  font-size: var(--text-2xl);
  max-width: 20ch;
}
.section-head p {
  color: var(--color-text-muted);
  max-width: 42ch;
  margin: 0;
}
.section-kicker {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  display: block;
  margin-bottom: var(--space-3);
}

@media (max-width: 700px) {
  .section-head { flex-direction: column; align-items: flex-start; }
}

/* ==========================================================================
   Series grid / cards
   ========================================================================== */
.cluster { margin-bottom: var(--space-16); }
.cluster:last-child { margin-bottom: 0; }
.cluster-title {
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}
.cluster-title h3 {
  font-size: var(--text-lg);
  color: var(--color-primary);
}
.cluster-title span {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
@media (max-width: 980px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .card-grid { grid-template-columns: 1fr; } }

.condition-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  height: 100%;
}
.condition-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}
.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}
.card-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.card-part {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}
.condition-card h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}
.card-dek {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.6;
  flex-grow: 1;
  margin-bottom: var(--space-4);
}
.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
}
.card-foot .read-more {
  color: var(--color-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

/* ==========================================================================
   How it works band
   ========================================================================== */
.how-band { background: var(--color-surface-offset); border-top: 1px solid var(--color-divider); border-bottom: 1px solid var(--color-divider); }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-10);
}
@media (max-width: 880px) { .steps-grid { grid-template-columns: 1fr; } }
.step-card { }
.step-num {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-primary);
  display: block;
  margin-bottom: var(--space-3);
}
.step-card h4 { font-size: var(--text-base); margin-bottom: var(--space-2); }
.step-card p { color: var(--color-text-muted); font-size: var(--text-sm); margin: 0; }

.structure-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4) var(--space-8);
  margin-top: var(--space-10);
}
@media (max-width: 780px) { .structure-list { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .structure-list { grid-template-columns: 1fr; } }
.structure-list li {
  display: flex;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  align-items: baseline;
}
.structure-list .n {
  font-family: var(--font-display);
  color: var(--color-primary);
  font-weight: 600;
  flex-shrink: 0;
}

/* ==========================================================================
   Credibility strip
   ========================================================================== */
.credibility {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: var(--space-16);
  align-items: center;
}
@media (max-width: 880px) { .credibility { grid-template-columns: 1fr; gap: var(--space-8); } }
.credibility-portrait {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 1/1;
  box-shadow: var(--shadow-md);
}
.credibility-portrait img { width: 100%; height: 100%; object-fit: cover; }
.credibility-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}
.credibility-badges span {
  font-size: var(--text-xs);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  font-weight: 600;
}

/* ==========================================================================
   Newsletter
   ========================================================================== */
.newsletter {
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-10), 6vw, var(--space-16));
  text-align: center;
}
.newsletter h2 { color: #fff; font-size: var(--text-xl); margin-bottom: var(--space-3); }
.newsletter p { color: color-mix(in srgb, #fff 80%, transparent); max-width: 50ch; margin: 0 auto var(--space-8); }
.newsletter-form {
  display: flex;
  gap: var(--space-3);
  max-width: 460px;
  margin: 0 auto;
}
.newsletter-form input {
  flex: 1;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  font-size: var(--text-sm);
  font-family: var(--font-body);
  background: rgba(255,255,255,0.95);
  color: var(--color-text);
}
.newsletter-form input:focus { outline: 2px solid #fff; outline-offset: 2px; }
.newsletter-form button {
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-full);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}
.newsletter-form button:hover { background: var(--color-accent-hover); }
.newsletter-note { font-size: var(--text-xs); opacity: 0.7; margin-top: var(--space-4); margin-bottom: 0; }
.form-success {
  display: none;
  font-size: var(--text-sm);
  font-weight: 600;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  max-width: 460px;
  margin: 0 auto;
}
@media (max-width: 540px) { .newsletter-form { flex-direction: column; } }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--color-divider);
  background: var(--color-surface-offset);
  padding-block: var(--space-16) var(--space-10);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}
@media (max-width: 880px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-brand .logo-link { margin-bottom: var(--space-4); }
.footer-brand p { color: var(--color-text-muted); font-size: var(--text-sm); max-width: 32ch; }
.footer-col h5 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
  font-weight: 700;
}
.footer-col ul { display: flex; flex-direction: column; gap: var(--space-2); list-style: none; }
.footer-col a { font-size: var(--text-sm); color: var(--color-text-muted); }
.footer-col a:hover { color: var(--color-primary); }
.footer-bottom {
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-8);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.footer-disclaimer {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  max-width: 90ch;
  margin-bottom: var(--space-6);
  line-height: 1.7;
}
.footer-crosslink {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-bottom: var(--space-6);
}
.footer-crosslink a { color: var(--color-text-muted); text-decoration: underline; text-decoration-color: var(--color-border); }
.footer-crosslink a:hover { color: var(--color-primary); }

/* ==========================================================================
   Page header (interior pages)
   ========================================================================== */
.page-header {
  padding-block: clamp(var(--space-12), 8vw, var(--space-20)) var(--space-10);
  border-bottom: 1px solid var(--color-divider);
}
.breadcrumb {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-primary); }
.page-header h1 { font-size: var(--text-2xl); max-width: 26ch; }
.page-header .lede { font-size: var(--text-lg); color: var(--color-text-muted); max-width: 60ch; margin-top: var(--space-4); }

/* ==========================================================================
   Condition article page
   ========================================================================== */
.condition-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-5);
}
.condition-meta .dot { opacity: 0.5; }
.condition-meta .cluster-tag { color: var(--color-primary); }

.condition-hero-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: var(--space-10);
  box-shadow: var(--shadow-md);
  aspect-ratio: 16/7;
}
.condition-hero-image img { width: 100%; height: 100%; object-fit: cover; }

.article-body { padding-block: var(--space-16); }
.prose {
  max-width: var(--content-narrow);
  margin: 0 auto;
  font-size: var(--text-base);
  line-height: 1.75;
}
.prose h2 {
  font-size: var(--text-xl);
  color: var(--color-primary);
  margin-top: var(--space-16);
  margin-bottom: var(--space-5);
  scroll-margin-top: 100px;
}
.prose h2:first-child { margin-top: 0; }
.prose h3 {
  font-size: var(--text-lg);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
}
.prose p { margin-bottom: 1.3em; color: var(--color-text); }
.prose ul, .prose ol { margin: var(--space-5) 0 var(--space-6) var(--space-6); }
.prose li { margin-bottom: var(--space-2); line-height: 1.7; }
.prose strong { color: var(--color-text); font-weight: 700; }
.prose a { color: var(--color-primary); text-decoration: underline; text-decoration-color: var(--color-primary-highlight); }
.prose a.btn { color: #fff; text-decoration: none; }
.prose a.btn-outline { color: var(--color-text); }

.pull-callout {
  background: var(--color-surface-offset);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--space-5) var(--space-6);
  margin: var(--space-8) 0;
  font-size: var(--text-base);
}
.pull-callout strong { display: block; color: var(--color-primary); margin-bottom: var(--space-2); font-size: var(--text-sm); text-transform: uppercase; letter-spacing: 0.04em; }

.stat-inline-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin: var(--space-8) 0;
}
@media (max-width: 600px) { .stat-inline-grid { grid-template-columns: 1fr 1fr; } }
.stat-inline {
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-4);
  text-align: center;
}
.stat-inline .num { font-family: var(--font-display); font-size: var(--text-lg); display: block; margin-bottom: var(--space-1); font-weight: 600; }
.stat-inline .lbl { font-size: var(--text-xs); opacity: 0.85; line-height: 1.4; }

.cost-table-wrap { margin: var(--space-8) 0; overflow-x: auto; }
.cost-table { width: 100%; border-collapse: collapse; font-size: var(--text-sm); }
.cost-table caption { text-align: left; font-size: var(--text-xs); color: var(--color-text-faint); margin-bottom: var(--space-3); }
.cost-table th, .cost-table td { padding: var(--space-3) var(--space-4); border-bottom: 1px solid var(--color-divider); text-align: left; }
.cost-table th { color: var(--color-primary); font-weight: 700; font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.04em; }
.cost-table tr:last-child td { border-bottom: none; }

.pdf-download-block {
  background: var(--color-primary-soft);
  border: 1px solid var(--color-primary-highlight);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  margin: var(--space-12) 0;
}
.pdf-download-block .icon-wrap {
  width: 56px; height: 56px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto var(--space-5);
}
.pdf-download-block h3 { font-size: var(--text-lg); margin-bottom: var(--space-2); }
.pdf-download-block p { color: var(--color-text-muted); font-size: var(--text-sm); margin-bottom: var(--space-6); max-width: 46ch; margin-inline: auto; }

.related-block { background: var(--color-surface-offset); border-top: 1px solid var(--color-divider); }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-8);
}
@media (max-width: 880px) { .related-grid { grid-template-columns: 1fr; } }
.related-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  transition: border-color 0.15s, transform 0.15s;
}
.related-card:hover { border-color: var(--color-primary); transform: translateY(-2px); }
.related-card .tag { font-size: var(--text-xs); color: var(--color-text-faint); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: var(--space-2); display: block; }
.related-card h4 { font-size: var(--text-base); margin-bottom: var(--space-2); }
.related-card p { font-size: var(--text-sm); color: var(--color-text-muted); margin: 0; }

.series-nav {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  gap: var(--space-4);
  padding-block: var(--space-12);
  border-top: 1px solid var(--color-divider);
}
.series-nav-link {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-5) var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.15s, background 0.15s;
  max-width: 320px;
}
.series-nav-link:hover { border-color: var(--color-primary); background: var(--color-surface); }
.series-nav-link.next { text-align: right; align-items: flex-end; margin-left: auto; }
.series-nav-link .dir { font-size: var(--text-xs); color: var(--color-text-faint); text-transform: uppercase; letter-spacing: 0.06em; display: flex; align-items: center; gap: var(--space-2); }
.series-nav-link.next .dir { flex-direction: row-reverse; }
.series-nav-link .title { font-family: var(--font-display); font-size: var(--text-base); color: var(--color-text); font-weight: 600; }
@media (max-width: 640px) { .series-nav { flex-direction: column; } .series-nav-link.next { margin-left: 0; } }

/* ==========================================================================
   Glossary page
   ========================================================================== */
.adl-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin: var(--space-10) 0;
}
@media (max-width: 880px) { .adl-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .adl-grid { grid-template-columns: 1fr; } }
.adl-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
}
.adl-card .adl-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-full);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-4);
}
.adl-card h4 { font-size: var(--text-base); margin-bottom: var(--space-2); }
.adl-card p { font-size: var(--text-sm); color: var(--color-text-muted); margin: 0; }

.glossary-list { max-width: var(--content-narrow); margin: 0 auto; }
.glossary-entry {
  padding-block: var(--space-6);
  border-bottom: 1px solid var(--color-divider);
}
.glossary-entry:first-child { padding-top: 0; }
.glossary-entry dt {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}
.glossary-entry dd { margin: 0; color: var(--color-text-muted); line-height: 1.7; }

.glossary-jump {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-10);
}
.glossary-jump a {
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}
.glossary-jump a:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ==========================================================================
   About page
   ========================================================================== */
.about-hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}
@media (max-width: 880px) { .about-hero-split { grid-template-columns: 1fr; gap: var(--space-10); } }
.about-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); aspect-ratio: 4/5; }
.about-image img { width: 100%; height: 100%; object-fit: cover; }

.method-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}
@media (max-width: 700px) { .method-grid { grid-template-columns: 1fr; } }
.method-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}
.method-card h3 { font-size: var(--text-lg); color: var(--color-primary); margin-bottom: var(--space-3); }
.method-card p { color: var(--color-text-muted); margin: 0; font-size: var(--text-sm); }

/* ==========================================================================
   Contact page
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}
@media (max-width: 880px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}
.contact-card h3 { font-size: var(--text-lg); margin-bottom: var(--space-3); color: var(--color-primary); }
.contact-card p { color: var(--color-text-muted); font-size: var(--text-sm); }
.contact-form { display: flex; flex-direction: column; gap: var(--space-5); }
.form-field label { display: block; font-size: var(--text-sm); font-weight: 600; margin-bottom: var(--space-2); }
.form-field input, .form-field select, .form-field textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
}
.form-field textarea { resize: vertical; min-height: 120px; }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { outline: 2px solid var(--color-primary); outline-offset: 1px; }

/* ==========================================================================
   Utilities
   ========================================================================== */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.bg-surface-offset { background: var(--color-surface-offset); }
.divider-top { border-top: 1px solid var(--color-divider); }
.divider-bottom { border-bottom: 1px solid var(--color-divider); }

.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}