@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  --color-primary: #82825F;
  --color-secondary: #8794A2;
  --color-cta: #F81F43;
  --color-cta-hover: #D91535;
  --color-bg: #E1DDDF;
  --color-text: #31322B;
  --color-text-muted: #595E70;
  --color-dark: #31322B;
  --color-dark-mid: #3d3e35;
  --color-steel: #5B553D;
  --color-gold: #C59A58;
  --color-olive: #66723B;
  --color-sage: #99A587;
  --font-base: 'Plus Jakarta Sans', system-ui, sans-serif;
  --z-nav: 50;
  --z-overlay: 15;
  --z-content: 20;
  --z-parallax: 10;
}

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

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .parallax-layer { transform: none !important; }
}

body {
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
  line-height: 1.65;
}

/* ─── Navigation ─────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 1rem;
  left: 1rem;
  right: 1rem;
  z-index: var(--z-nav);
  background: rgba(49, 50, 43, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 0.875rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.3s ease;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.125rem;
  color: #fff;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-logo span { color: var(--color-cta); }

.nav-links {
  display: flex;
  gap: 0.25rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
}

.nav-links a:hover { color: #fff; background: rgba(255,255,255,0.1); }
.nav-links a.active { color: #fff; background: rgba(249,115,22,0.2); }

.nav-cta {
  background: var(--color-cta) !important;
  color: #fff !important;
  padding: 0.5rem 1.125rem !important;
  border-radius: 8px !important;
  font-weight: 600 !important;
  transition: background 0.2s !important;
}

.nav-cta:hover { background: var(--color-cta-hover) !important; }

.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: #fff;
  padding: 0.25rem;
}

/* ─── Progress Bar ────────────────────────────────────────────── */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--color-cta);
  z-index: 100;
  width: 0%;
  transition: width 0.1s linear;
}

/* ─── Parallax Hero ───────────────────────────────────────────── */
.parallax-hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.parallax-bg {
  position: absolute;
  inset: -20%;
  background-size: cover;
  background-position: center;
  will-change: transform;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to top, rgba(39,40,32,0.85) 0%, transparent 40%),
    linear-gradient(135deg, rgba(39,40,32,0.72) 0%, rgba(49,50,43,0.42) 50%, rgba(39,40,32,0.65) 100%);
  z-index: var(--z-overlay);
}

.hero-grid-overlay {
  position: absolute;
  inset: 0;
  z-index: var(--z-overlay);
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 64px 64px;
}

.hero-content {
  position: relative;
  z-index: var(--z-content);
  text-align: center;
  padding: 0 1.5rem;
  max-width: 900px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-cta);
  margin-bottom: 1.25rem;
}

.hero-eyebrow-line {
  width: 32px;
  height: 2px;
  background: var(--color-cta);
}

.hero-title {
  font-size: clamp(2.25rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 1.25rem;
  text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

.hero-title em {
  font-style: normal;
  color: var(--color-cta);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255,255,255,0.92);
  max-width: 600px;
  margin: 0 auto 2.25rem;
  line-height: 1.65;
  text-shadow: 0 1px 8px rgba(0,0,0,0.4);
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-cta);
  color: #fff;
  font-weight: 700;
  font-size: 0.9375rem;
  padding: 0.875rem 1.75rem;
  border-radius: 10px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 16px rgba(249,115,22,0.35);
}

.btn-primary:hover {
  background: var(--color-cta-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(249,115,22,0.45);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,0.1);
  color: #fff;
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.875rem 1.75rem;
  border-radius: 10px;
  text-decoration: none;
  border: 1px solid rgba(255,255,255,0.2);
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  backdrop-filter: blur(4px);
}

.btn-secondary:hover { background: rgba(255,255,255,0.18); transform: translateY(-2px); }

.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-content);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255,255,255,0.45);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

.scroll-hint svg { opacity: 0.6; }

/* ─── Chapter Sections ────────────────────────────────────────── */
.chapter {
  position: relative;
  overflow: hidden;
}

.chapter-dark {
  background: var(--color-dark);
  color: #fff;
}

.chapter-steel {
  background: var(--color-steel);
  color: #fff;
}

.chapter-light {
  background: var(--color-bg);
  color: var(--color-text);
}

.chapter-mid {
  background: #d6d2d4;
  color: var(--color-text);
}

.chapter-inner {
  position: relative;
  z-index: var(--z-content);
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 1.5rem;
}

.chapter-inner-sm {
  max-width: 800px;
  margin: 0 auto;
  padding: 5rem 1.5rem;
}

/* ─── Section Labels ──────────────────────────────────────────── */
.section-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-cta);
  margin-bottom: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-cta);
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.section-title-light { color: #fff; }
.section-title-dark { color: var(--color-text); }

.section-body {
  font-size: 1.0625rem;
  line-height: 1.75;
  max-width: 65ch;
}

.section-body-light { color: rgba(255,255,255,0.72); }
.section-body-dark { color: var(--color-text-muted); }

/* ─── Parallax Decorative Layers ─────────────────────────────── */
.parallax-layer {
  position: absolute;
  will-change: transform;
  pointer-events: none;
  user-select: none;
}

.deco-circle {
  border-radius: 50%;
  background: radial-gradient(circle, rgba(249,115,22,0.12) 0%, transparent 70%);
}

.deco-lines {
  opacity: 0.04;
  background-image: repeating-linear-gradient(
    -45deg,
    #fff 0,
    #fff 1px,
    transparent 0,
    transparent 50%
  );
  background-size: 16px 16px;
}

/* ─── Cards ───────────────────────────────────────────────────── */
.card-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 3rem;
}

.card-grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.card-grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

.card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 2rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  cursor: pointer;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 48px rgba(0,0,0,0.3);
  border-color: rgba(249,115,22,0.4);
}

.card-light {
  background: #fff;
  border-color: #E2E8F0;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.card-light:hover {
  box-shadow: 0 16px 40px rgba(0,0,0,0.12);
  border-color: var(--color-cta);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: rgba(249,115,22,0.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--color-cta);
}

.card-title {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.625rem;
}

.card-title-light { color: #fff; }
.card-title-dark { color: var(--color-text); }

.card-text {
  font-size: 0.9375rem;
  line-height: 1.65;
}

.card-text-light { color: rgba(255,255,255,0.62); }
.card-text-dark { color: var(--color-text-muted); }

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  color: var(--color-cta);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  margin-top: 1rem;
  transition: gap 0.2s;
}

.card-link:hover { gap: 0.625rem; }

/* ─── Stats Strip ─────────────────────────────────────────────── */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin: 4rem 0;
}

.stat-item {
  padding: 2rem 1.5rem;
  text-align: center;
  border-right: 1px solid rgba(255,255,255,0.08);
}

.stat-item:last-child { border-right: none; }

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--color-gold);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: rgba(255,255,255,0.55);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ─── Timeline ────────────────────────────────────────────────── */
.timeline {
  position: relative;
  padding-left: 2rem;
  margin-top: 3rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-cta), rgba(249,115,22,0.2));
}

.timeline-item {
  position: relative;
  padding-bottom: 2.5rem;
  padding-left: 1.5rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2.4rem;
  top: 0.375rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-cta);
  border: 2px solid var(--color-dark);
  box-shadow: 0 0 0 4px rgba(249,115,22,0.2);
}

.timeline-date {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-cta);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.375rem;
}

.timeline-heading {
  font-size: 1.125rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.timeline-text {
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.62);
  line-height: 1.65;
}

/* ─── Feature List ────────────────────────────────────────────── */
.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  margin-top: 1.5rem;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.9375rem;
  line-height: 1.6;
}

.feature-list li svg {
  flex-shrink: 0;
  color: var(--color-cta);
  margin-top: 0.1rem;
}

/* ─── Two-column split ────────────────────────────────────────── */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.split-reverse { direction: rtl; }
.split-reverse > * { direction: ltr; }

@media (max-width: 768px) {
  .split { grid-template-columns: 1fr; gap: 3rem; }
  .split-reverse { direction: ltr; }
}

/* ─── Visual Block ────────────────────────────────────────────── */
.visual-block {
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  aspect-ratio: 4/3;
  background: var(--color-dark-mid);
  display: flex;
  align-items: center;
  justify-content: center;
}

.visual-block-inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 2rem;
  text-align: center;
}

.visual-label {
  font-size: 1rem;
  font-weight: 600;
  color: rgba(255,255,255,0.55);
}

.visual-accent {
  width: 80px;
  height: 4px;
  background: var(--color-cta);
  border-radius: 2px;
}

/* ─── CTA Band ────────────────────────────────────────────────── */
.cta-band {
  background: linear-gradient(135deg, #C01030 0%, var(--color-cta) 100%);
  padding: 5rem 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 48px 48px;
}

.cta-band-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  position: relative;
}

.cta-band-text {
  color: rgba(255,255,255,0.85);
  font-size: 1.0625rem;
  margin-bottom: 2rem;
  position: relative;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.btn-white {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #fff;
  color: #C01030;
  font-weight: 700;
  font-size: 0.9375rem;
  padding: 0.875rem 2rem;
  border-radius: 10px;
  text-decoration: none;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,0,0,0.25); }

/* ─── Footer ──────────────────────────────────────────────────── */
.footer {
  background: var(--color-dark);
  color: rgba(255,255,255,0.6);
  padding: 4rem 1.5rem 2rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand { font-size: 1.25rem; font-weight: 800; color: #fff; letter-spacing: -0.02em; margin-bottom: 0.75rem; }
.footer-brand span { color: var(--color-cta); }
.footer-tagline { font-size: 0.875rem; line-height: 1.65; }

.footer-heading {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 1rem;
}

.footer-links { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }

.footer-links a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer-links a:hover { color: #fff; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.footer-certs { display: flex; align-items: center; gap: 1rem; }
.cert-badge {
  padding: 0.25rem 0.625rem;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.05em;
}

/* ─── Page Header (inner pages) ──────────────────────────────── */
.page-header {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-steel) 100%);
  padding: 10rem 1.5rem 5rem;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.page-header-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 64px 64px;
}

.page-header-content { position: relative; z-index: 10; }
.page-header h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
  margin-bottom: 0.875rem;
}

.page-header p {
  font-size: 1.125rem;
  color: rgba(255,255,255,0.65);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ─── Contact Form ────────────────────────────────────────────── */
.form-group { margin-bottom: 1.25rem; }

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.4rem;
}

.form-input, .form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid #CBD5E1;
  border-radius: 8px;
  font-family: var(--font-base);
  font-size: 0.9375rem;
  color: var(--color-text);
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--color-cta);
  box-shadow: 0 0 0 3px rgba(249,115,22,0.15);
}

.form-textarea { resize: vertical; min-height: 120px; }

/* ─── Contact Info Card ───────────────────────────────────────── */
.contact-card {
  background: var(--color-dark-mid);
  border-radius: 16px;
  padding: 2rem;
  border: 1px solid rgba(255,255,255,0.07);
}

.contact-row {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.contact-row:last-child { border-bottom: none; }

.contact-row-icon {
  width: 40px;
  height: 40px;
  background: rgba(249,115,22,0.12);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-cta);
  flex-shrink: 0;
}

.contact-row-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 0.25rem;
}

.contact-row-value {
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.85);
  line-height: 1.55;
}

.contact-row-value a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  transition: color 0.2s;
}

.contact-row-value a:hover { color: var(--color-cta); }

/* ─── Downloads ───────────────────────────────────────────────── */
.download-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.125rem 1.25rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
  margin-bottom: 0.625rem;
}

.download-item:hover {
  background: rgba(249,115,22,0.08);
  border-color: rgba(249,115,22,0.3);
  transform: translateX(4px);
}

.download-item-icon {
  width: 40px;
  height: 40px;
  background: rgba(249,115,22,0.12);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-cta);
  flex-shrink: 0;
}

.download-item-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: rgba(255,255,255,0.88);
  flex: 1;
}

.download-item-type {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.4);
  font-weight: 500;
}

/* ─── Scroll Reveal ───────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ─── Responsive ──────────────────────────────────────────────── */
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-mobile-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: calc(100% + 0.75rem);
    left: 0;
    right: 0;
    background: rgba(39,40,32,0.98);
    border-radius: 12px;
    padding: 1rem;
    border: 1px solid rgba(255,255,255,0.08);
  }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .stats-strip { grid-template-columns: 1fr 1fr; }
  .stat-item:nth-child(2n) { border-right: none; }
  .chapter-inner { padding: 4rem 1rem; }
}