:root {
  --bg: #090B09;
  --bg-alt: #0E110E;
  --bg-surface: #131713;
  --bg-paper: #161B16;

  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);

  --text: #F2F4F1;
  --text-body: #B8C0B8;
  --text-muted: #768076;

  --green: #65EC45;
  --green-hover: #79F45B;
  --ink-on-green: #061406;

  --font-display: "Plus Jakarta Sans", "Syne", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  --container: 1220px;
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  background: var(--bg);
  color: var(--text);
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

[hidden] {
  display: none !important;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  z-index: 999;
  background: var(--green);
  color: var(--ink-on-green);
  padding: 8px 16px;
  font-weight: 600;
  font-size: 0.85rem;
}

.skip-link:focus {
  top: 12px;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

/* ==========================================================================
   TYPOGRAPHY & SHARED ELEMENTS
   ========================================================================== */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.03em;
  line-height: 1.08;
}

.editorial-accent,
.accent-word {
  font-style: italic;
  font-weight: 700;
  color: var(--green);
  letter-spacing: -0.01em;
}

.section-index {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.editorial-h2 {
  font-size: clamp(2.1rem, 4vw, 3.35rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.032em;
}

.muted-span {
  color: var(--text-muted);
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: var(--green);
  color: var(--ink-on-green);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.96rem;
  letter-spacing: -0.01em;
  padding: 17px 30px;
  border-radius: 6px;
  border: 0;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.btn-primary:hover {
  background: var(--green-hover);
  transform: translateY(-1px);
}

.btn-arrow {
  transition: transform 0.2s ease;
}

.btn-primary:hover .btn-arrow {
  transform: translateX(4px);
}

.btn-large {
  padding: 19px 36px;
  font-size: 1.02rem;
}

.btn-compact {
  padding: 11px 18px;
  font-size: 0.88rem;
}

.btn-block {
  width: 100%;
}

.text-link {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.94rem;
  color: var(--text-body);
  padding: 8px 0;
  border-bottom: 1px solid var(--line-strong);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.text-link:hover {
  color: var(--text);
  border-color: var(--text);
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 11, 9, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.header-bar {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: "Cinzel", "Playfair Display", Georgia, serif;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  line-height: 1;
  text-decoration: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.wordmark:hover {
  opacity: 0.9;
  transform: translateY(-0.5px);
}

.wordmark-light {
  color: #F4F6F2;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.wordmark-gold {
  font-weight: 800;
  background: linear-gradient(135deg, #F8E7C4 0%, #D8B257 45%, #AA812A 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  color: #D8B257;
  letter-spacing: 0.15em;
  filter: drop-shadow(0 2px 8px rgba(216, 178, 87, 0.2));
}

.wordmark-dot {
  display: none !important;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.main-nav a {
  font-size: 0.88rem;
  color: var(--text-body);
  transition: color 0.18s ease;
}

.main-nav a:hover {
  color: var(--text);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-buy-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 0.86rem;
  font-weight: 700;
  padding: 9px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.header-buy-link:hover {
  border-color: var(--green);
  background: rgba(101, 236, 69, 0.06);
}

.header-price {
  color: var(--green);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  color: var(--text);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.menu-line {
  width: 16px;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.2s ease;
}

.menu-toggle[aria-expanded="true"] .menu-line:first-child {
  transform: translateY(3.25px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-line:last-child {
  transform: translateY(-3.25px) rotate(-45deg);
}

.mobile-menu {
  border-top: 1px solid var(--line);
  background: var(--bg);
  padding: 24px 0 32px;
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid var(--line);
  margin-bottom: 24px;
}

.mobile-nav a {
  padding: 14px 0;
  border-top: 1px solid var(--line);
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-body);
}

.mobile-nav a:first-child {
  border-top: 0;
}

/* ==========================================================================
   01 / HERO SECTION (Editorial Campaign Layout)
   ========================================================================== */
.hero {
  padding: 72px 0 112px;
  border-bottom: 1px solid var(--line);
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.kicker-divider {
  color: var(--green);
}

.hero-heading {
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 6.8vw, 5.6rem);
  font-weight: 800;
  line-height: 0.94;
  letter-spacing: -0.04em;
  margin-bottom: 28px;
  color: #FFFFFF;
}

.hero-heading .brand-highlight {
  font-family: "Syne", "Plus Jakarta Sans", sans-serif;
  font-weight: 800;
  font-style: italic;
  color: var(--green);
  letter-spacing: -0.02em;
  display: inline-block;
  text-shadow: 0 0 35px rgba(101, 236, 69, 0.35);
  transform: skewX(-3deg);
}

.hero-statement {
  font-family: var(--font-display);
  font-size: clamp(1.22rem, 2vw, 1.5rem);
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
  max-width: 38ch;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 1.04rem;
  color: var(--text-body);
  max-width: 50ch;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 28px;
  margin-bottom: 52px;
}

.hero-meta-strip {
  display: grid;
  grid-template-columns: repeat(3, auto);
  justify-content: start;
  gap: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.hero-meta-strip dt {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.hero-meta-strip dd {
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
}

/* Editorial Visual Composition */
.editorial-composition {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.comp-frame {
  position: relative;
  background: var(--bg-alt);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  overflow: hidden;
}

.comp-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.comp-frame figcaption {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(9, 11, 9, 0.88);
  padding: 4px 10px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  border: 1px solid var(--line);
  backdrop-filter: blur(4px);
  border-radius: 3px;
  z-index: 5;
}

.comp-before {
  position: absolute;
  top: 24px;
  left: 0;
  width: 48%;
  aspect-ratio: 3 / 4;
  filter: brightness(1.02) contrast(1.05);
  opacity: 0.94;
  z-index: 1;
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.7);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.comp-before figcaption {
  right: auto;
  left: 10px;
  top: 10px;
  bottom: auto;
  border-left: 2px solid #8E968E;
}

.comp-before:hover {
  opacity: 1;
  transform: translateY(-3px);
}

.comp-after {
  width: 60%;
  aspect-ratio: 3 / 4;
  z-index: 2;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.comp-after figcaption {
  border-left: 2px solid var(--green);
}

.comp-book {
  position: absolute;
  left: 18%;
  bottom: -16px;
  width: 38%;
  z-index: 4;
  box-shadow: 0 28px 65px rgba(0, 0, 0, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.comp-book:hover {
  transform: translateY(-5px);
}

/* ==========================================================================
   02 / PROBLEM SECTION (Asymmetric Split + Hairline Rows)
   ========================================================================== */
.section-split {
  padding: 120px 0;
  border-bottom: 1px solid var(--line);
}

.split-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 80px;
  align-items: start;
}

.split-sticky {
  position: sticky;
  top: calc(var(--header-h) + 40px);
}

.split-lead {
  margin-top: 22px;
  font-size: 1.05rem;
  color: var(--text-body);
  max-width: 42ch;
}

.split-closing {
  margin-top: 32px;
  padding-left: 16px;
  border-left: 2px solid var(--green);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text);
}

.split-list {
  border-top: 1px solid var(--line);
}

.issue-row {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 24px;
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}

.issue-num {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--green);
  letter-spacing: 0.08em;
}

.issue-content h3 {
  font-size: 1.35rem;
  margin-bottom: 8px;
}

.issue-content p {
  color: var(--text-body);
  font-size: 0.98rem;
  max-width: 54ch;
}

/* ==========================================================================
   03 / SOLUTION SECTION (4 Architectural Columns — Flush Grid)
   ========================================================================== */
.section-pillars {
  padding: 120px 0;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--line);
}

.pillars-header {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: end;
  margin-bottom: 64px;
}

.pillars-intro {
  color: var(--text-body);
  font-size: 1.02rem;
}

.pillars-intro strong {
  color: var(--text);
}

.architectural-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line-strong);
  background: var(--bg);
}

.arch-col {
  padding: 40px 30px;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  transition: background 0.25s ease;
}

.arch-col:last-child {
  border-right: 0;
}

.arch-col:hover {
  background: var(--bg-surface);
}

.arch-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 36px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.arch-roman {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.35rem;
  color: var(--green);
}

.arch-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.arch-col h3 {
  font-size: 1.6rem;
  margin-bottom: 14px;
}

.arch-desc {
  color: var(--text-body);
  font-size: 0.95rem;
  margin-bottom: 32px;
  flex: 1;
}

.arch-specs {
  list-style: none;
  border-top: 1px solid var(--line);
  padding-top: 18px;
  display: grid;
  gap: 8px;
}

.arch-specs li {
  font-size: 0.84rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.arch-specs li::before {
  content: "—";
  color: var(--green);
}

/* ==========================================================================
   04 / PRODUCT SHOWCASE (Authentic PDF Spread Left + Index Right)
   ========================================================================== */
.section-inside {
  padding: 120px 0;
  border-bottom: 1px solid var(--line);
}

.inside-header {
  margin-bottom: 52px;
}

.inside-layout {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 48px;
  align-items: start;
}

.viewer-meta-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.viewer-meta-badge {
  background: rgba(101, 236, 69, 0.12);
  color: var(--green);
  padding: 3px 10px;
  border-radius: 4px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.pdf-spread-mockup {
  background: #111411;
  border: 1px solid var(--line-strong);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.75);
  border-radius: 8px;
  overflow: hidden;
  position: relative;
}

.spread-content {
  display: none;
  grid-template-columns: 1fr 1fr;
  position: relative;
}

.spread-content.active {
  display: grid;
}

/* Authentic PDF Book Pages (Cream Paper Aesthetic) */
.sheet {
  background: #FAF7F0;
  color: #1A1C19;
  padding: 30px 26px;
  min-height: 480px;
  display: flex;
  flex-direction: column;
  position: relative;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  line-height: 1.55;
}

.sheet-left {
  border-right: 1px solid #E5E0D5;
  box-shadow: inset -10px 0 15px -10px rgba(0,0,0,0.08);
}

.sheet-right {
  box-shadow: inset 10px 0 15px -10px rgba(0,0,0,0.08);
}

.sheet-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #7A7870;
  padding-bottom: 12px;
  margin-bottom: 18px;
  border-bottom: 1px solid #E8E3D8;
}

.sheet-head .page-num {
  font-family: var(--font-display);
  font-weight: 700;
  color: #C5A059;
  font-size: 0.75rem;
}

.sheet h4 {
  color: #111311;
  font-size: 1.18rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}

.sheet-subhead {
  color: #C5A059;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 4px;
}

.sheet-quote {
  position: relative;
  font-style: italic;
  color: #2D302C;
  font-size: 0.86rem;
  line-height: 1.5;
  padding-left: 20px;
  margin: 10px 0 16px;
  border-left: 2px solid #C5A059;
}

.sheet-quote-mark {
  color: #C5A059;
  font-size: 1.6rem;
  line-height: 1;
  font-weight: 700;
  position: absolute;
  left: 0;
  top: -4px;
}

.sheet-callout-dark {
  background: #131713;
  color: #FAF7F0;
  padding: 16px 18px;
  border-radius: 4px;
  margin-top: auto;
  border-left: 3px solid #C5A059;
}

.sheet-callout-title {
  color: #C5A059;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.sheet-checklist {
  list-style: none;
  display: grid;
  gap: 6px;
  font-size: 0.78rem;
}

.sheet-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  color: #D8DFD8;
}

.sheet-checklist li::before {
  content: "☐";
  color: #C5A059;
  font-weight: bold;
}

/* Authentic PDF Tables */
.pdf-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.76rem;
  margin: 10px 0 16px;
}

.pdf-table th {
  background: #EFEBE0;
  color: #1A1C19;
  text-align: left;
  padding: 6px 8px;
  font-weight: 600;
  border-bottom: 1px solid #D8D2C4;
}

.pdf-table td {
  padding: 6px 8px;
  border-bottom: 1px solid #ECE7DB;
  color: #333632;
}

.pdf-table tr:last-child td {
  border-bottom: 0;
}

/* Blurred Teaser Zones */
.pdf-teaser-blur {
  filter: blur(4px);
  opacity: 0.38;
  user-select: none;
  pointer-events: none;
  transition: filter 0.3s ease;
}

.pdf-relative-lock {
  position: relative;
  overflow: hidden;
}

.pdf-lock-banner {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90%;
  background: rgba(19, 23, 19, 0.94);
  border: 1px solid rgba(197, 160, 89, 0.45);
  box-shadow: 0 12px 30px rgba(0,0,0,0.6);
  padding: 16px;
  border-radius: 6px;
  text-align: center;
  z-index: 10;
  backdrop-filter: blur(6px);
}

.pdf-lock-icon {
  font-size: 1.3rem;
  margin-bottom: 6px;
}

.pdf-lock-title {
  color: #FAF7F0;
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.pdf-lock-text {
  color: #A3ACA3;
  font-size: 0.74rem;
  line-height: 1.4;
  margin-bottom: 12px;
}

.btn-lock-unlock {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #C5A059;
  color: #0B0E0B;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.78rem;
  padding: 8px 18px;
  border-radius: 4px;
  border: 0;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
}

.btn-lock-unlock:hover {
  background: #D8B46E;
  transform: translateY(-1px);
}

/* Pyramid Viz (Page 8 Replica) */
.pdf-pyramid {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  margin: 12px 0 16px;
}

.pyramid-tier {
  text-align: center;
  font-weight: 700;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 0;
  border-radius: 2px;
}

.pyr-4 { width: 38%; background: #D5C29A; color: #151815; }
.pyr-3 { width: 56%; background: #A88753; color: #FAF7F0; }
.pyr-2 { width: 76%; background: #454743; color: #FAF7F0; }
.pyr-1 { width: 96%; background: #181B18; color: #FAF7F0; }

.pyramid-note {
  font-size: 0.68rem;
  color: #7A7870;
  text-align: center;
  font-style: italic;
  margin-top: 4px;
}

/* Timeline Viz (Page 12 Replica) */
.pdf-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  background: #EFEBE0;
  padding: 10px;
  border-radius: 4px;
  margin: 12px 0 16px;
  text-align: center;
}

.timeline-item strong {
  display: block;
  font-size: 0.8rem;
  color: #C5A059;
}

.timeline-item span {
  font-size: 0.68rem;
  color: #333632;
  line-height: 1.2;
  display: block;
}

.sheet-strip {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  padding: 6px 10px;
  border-radius: 3px;
  margin-bottom: 8px;
}

.sheet-strip-gold {
  background: #F2ECE0;
  color: #775A22;
  font-weight: 600;
  border-left: 3px solid #C5A059;
}

/* Watermark Stamp on Sample */
.pdf-sample-stamp {
  position: absolute;
  bottom: 8px;
  right: 14px;
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  color: rgba(120, 115, 100, 0.45);
  text-transform: uppercase;
  font-weight: 700;
  pointer-events: none;
}

.viewer-footnote {
  margin-top: 14px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Chapter Index Tabs */
.index-caption {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.inside-index {
  display: flex;
  flex-direction: column;
}

.chapter-tab {
  width: 100%;
  background: transparent;
  border: 0;
  border-top: 1px solid var(--line);
  padding: 18px 16px;
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 14px;
  text-align: left;
  cursor: pointer;
  transition: background 0.2s ease, padding-left 0.2s ease;
}

.chapter-tab:last-child {
  border-bottom: 1px solid var(--line);
}

.chapter-tab:hover {
  background: rgba(255, 255, 255, 0.02);
}

.chapter-tab.active {
  background: var(--bg-surface);
  border-left: 2px solid var(--green);
  padding-left: 20px;
}

.tab-num {
  font-family: var(--font-display);
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--text-muted);
  padding-top: 2px;
}

.chapter-tab.active .tab-num {
  color: var(--green);
}

.tab-body strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.02rem;
  color: var(--text);
  margin-bottom: 4px;
}

.tab-body span {
  display: block;
  font-size: 0.83rem;
  color: var(--text-muted);
}

/* ==========================================================================
   05 / PROCESS & 6 MONTHS PERSPECTIVE
   ========================================================================== */
.section-process {
  padding: 120px 0;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--line);
}

.process-top {
  margin-bottom: 56px;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  padding-top: 36px;
  border-top: 1px solid var(--line-strong);
  margin-bottom: 112px;
}

.process-step-num {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 2.6rem;
  line-height: 1;
  color: var(--green);
  margin-bottom: 20px;
}

.process-step h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.process-step p {
  color: var(--text-body);
  font-size: 0.96rem;
}

.perspective-block {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 64px;
  align-items: center;
  padding-top: 72px;
  border-top: 1px solid var(--line);
}

.perspective-quote {
  font-size: clamp(1.85rem, 3.2vw, 2.65rem);
  line-height: 1.15;
  margin-bottom: 18px;
}

.perspective-left p {
  color: var(--text-body);
  font-size: 1.05rem;
  max-width: 44ch;
}

.perspective-list {
  list-style: none;
  border-top: 1px solid var(--line);
}

.perspective-list li {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 18px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
}

.perspective-list span {
  font-size: 0.78rem;
  color: var(--green);
  font-weight: 700;
}

/* ==========================================================================
   06 / OFFER & PURCHASE (Editorial Product Ledger)
   ========================================================================== */
.section-offer {
  padding: 128px 0;
  border-bottom: 1px solid var(--line);
}

.offer-ledger {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  border: 1px solid var(--line-strong);
  background: var(--bg-alt);
}

.offer-book-col {
  background: radial-gradient(circle at center, rgba(101, 236, 69, 0.07) 0%, transparent 70%),
              #0B0E0B;
  border-right: 1px solid var(--line);
  padding: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.offer-book-stage {
  max-width: 310px;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.offer-info-col {
  padding: 64px 56px;
}

.offer-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  margin-bottom: 10px;
}

.offer-subtitle {
  color: var(--text-body);
  font-size: 1.02rem;
  margin-bottom: 28px;
}

.offer-price-line {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 18px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 18px;
}

.offer-price {
  font-family: var(--font-display);
  font-size: clamp(2.3rem, 6vw, 2.8rem);
  font-weight: 800;
  line-height: 1;
  color: var(--text);
  white-space: nowrap !important;
  display: inline-block;
  flex-shrink: 0;
}

.price-nobr {
  white-space: nowrap !important;
}

/* Promo Code Styles */
.hero-promo-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(101, 236, 69, 0.1);
  border: 1px solid rgba(101, 236, 69, 0.3);
  color: var(--text);
  padding: 6px 14px;
  border-radius: 24px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-top: 12px;
}

.hero-promo-pill strong {
  color: var(--green);
  letter-spacing: 0.04em;
}

.offer-promo-callout {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 14px;
  background: rgba(101, 236, 69, 0.08);
  border: 1px dashed rgba(101, 236, 69, 0.4);
  padding: 12px 16px;
  border-radius: 6px;
  margin-bottom: 26px;
  font-size: 0.88rem;
}

.promo-tag {
  background: var(--green);
  color: var(--ink-on-green);
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
}

.offer-promo-callout strong {
  color: var(--green);
}

.promo-box {
  margin: 16px 0 18px;
  padding: 14px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
}

.promo-row {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.promo-row input {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--line-strong);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 4px;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: border-color 0.2s ease;
}

.promo-row input:focus {
  outline: none;
  border-color: var(--green);
}

.btn-promo-apply {
  background: #202720;
  color: var(--text);
  border: 1px solid var(--line-strong);
  padding: 10px 18px;
  border-radius: 4px;
  font-size: 0.84rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.btn-promo-apply:hover {
  background: var(--green);
  color: var(--ink-on-green);
  border-color: var(--green);
}

.promo-feedback {
  font-size: 0.8rem;
  margin-top: 8px;
  min-height: 1.2em;
}

.promo-feedback.success {
  color: var(--green);
  font-weight: 600;
}

.promo-feedback.error {
  color: #FF8585;
}

.offer-terms {
  font-size: 0.9rem;
  color: var(--green);
  font-weight: 500;
}

.offer-includes {
  margin-bottom: 36px;
}

.offer-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
}

.offer-item span {
  color: var(--text-muted);
}

.offer-item strong {
  color: var(--text);
  font-weight: 500;
}

.offer-micro {
  margin-top: 14px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ==========================================================================
   07 / FAQ (Asymmetric 2-Column Layout)
   ========================================================================== */
.section-faq {
  padding: 120px 0;
  border-bottom: 1px solid var(--line);
}

.faq-layout {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 72px;
  align-items: start;
}

.faq-intro p {
  margin-top: 18px;
  color: var(--text-body);
  font-size: 0.98rem;
}

.faq-intro a {
  color: var(--text);
  border-bottom: 1px solid var(--green);
}

.faq-accordion {
  border-top: 1px solid var(--line);
}

.faq-row {
  border-bottom: 1px solid var(--line);
}

.faq-row summary {
  list-style: none;
  cursor: pointer;
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 600;
  transition: color 0.18s ease;
}

.faq-row summary::-webkit-details-marker {
  display: none;
}

.faq-row summary:hover {
  color: var(--green);
}

.faq-plus {
  position: relative;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.faq-plus::before,
.faq-plus::after {
  content: "";
  position: absolute;
  background: var(--text-body);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.faq-plus::before {
  width: 12px;
  height: 1.5px;
}

.faq-plus::after {
  width: 1.5px;
  height: 12px;
}

.faq-row[open] .faq-plus::after {
  opacity: 0;
}

.faq-body {
  padding-bottom: 24px;
  color: var(--text-body);
  font-size: 0.96rem;
  max-width: 62ch;
}

/* ==========================================================================
   08 / CLOSING CTA & FOOTER
   ========================================================================== */
.section-closing {
  padding: 128px 0;
  text-align: center;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--line);
}

.closing-inner {
  max-width: 680px;
}

.closing-heading {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.04;
  margin-bottom: 20px;
}

.closing-sub {
  color: var(--text-body);
  font-size: 1.08rem;
  max-width: 46ch;
  margin: 0 auto 36px;
}

.site-footer {
  padding: 64px 0 40px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line);
}

.footer-brand {
  max-width: 300px;
}

.footer-brand strong,
.footer-title {
  font-family: "Cinzel", "Playfair Display", Georgia, serif;
  font-size: 0.95rem;
  letter-spacing: 0.14em;
  color: #F4F6F2;
  text-transform: uppercase;
}

.footer-gold {
  color: #D8B257;
  font-weight: 800;
}

.footer-brand p {
  margin-top: 12px;
}

.footer-links-group {
  display: flex;
  flex-wrap: wrap;
  gap: 64px;
}

.footer-links-group div {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links-group h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text);
  margin-bottom: 4px;
}

.footer-links-group a,
.footer-text-btn {
  color: var(--text-muted);
  background: none;
  border: 0;
  padding: 0;
  text-align: left;
  cursor: pointer;
  transition: color 0.18s ease;
}

.footer-links-group a:hover,
.footer-text-btn:hover {
  color: var(--text);
}

.footer-bottom {
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.8rem;
}

/* ==========================================================================
   DIALOGS (Checkout & Legal)
   ========================================================================== */
dialog {
  border: 1px solid var(--line-strong);
  background: var(--bg-surface);
  color: var(--text);
  border-radius: 8px;
  padding: 32px;
  width: calc(100% - 32px);
  max-width: 440px;
  margin: auto;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.85);
}

dialog::backdrop {
  background: rgba(5, 7, 5, 0.82);
  backdrop-filter: blur(4px);
}

.dialog-close {
  position: absolute;
  top: 16px;
  right: 18px;
  background: none;
  border: 0;
  color: var(--text-muted);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
}

.dialog-close:hover {
  color: var(--text);
}

.dialog-header {
  display: flex;
  gap: 16px;
  align-items: center;
  padding-bottom: 20px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.dialog-cover {
  width: 54px;
  border: 1px solid var(--line-strong);
}

.dialog-tag {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.dialog-header strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.1rem;
}

.dialog-price {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--green);
  margin-top: 2px;
}

.dialog-price small {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.test-mode-banner {
  background: rgba(255, 195, 60, 0.08);
  border: 1px solid rgba(255, 195, 60, 0.3);
  color: #F5D98E;
  padding: 10px 12px;
  border-radius: 4px;
  font-size: 0.76rem;
  margin-bottom: 18px;
}

.test-mode-banner strong {
  display: block;
}

.field-label {
  display: block;
  font-size: 0.86rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-body);
}

dialog input[type="email"] {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  color: var(--text);
  padding: 14px 15px;
  margin-bottom: 16px;
}

dialog input[type="email"]:focus {
  outline: none;
  border-color: var(--green);
}

.msg {
  margin-top: 12px;
  font-size: 0.86rem;
  color: var(--green);
  min-height: 1.2em;
}

.msg.err {
  color: #FF8585;
}

.dialog-direct-row {
  margin-top: 14px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
}

.direct-stripe-link {
  color: var(--text-body);
  text-decoration: underline;
  font-size: 0.82rem;
  transition: color 0.18s ease;
}

.direct-stripe-link:hover {
  color: var(--green);
}

.dialog-security-badges {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.74rem;
  color: var(--text-muted);
}

.dialog-note {
  margin-top: 14px;
  text-align: center;
  font-size: 0.76rem;
  color: var(--text-muted);
}

.legal-dialog {
  max-width: 600px;
}

.legal-dialog-body h3 {
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.legal-content {
  color: var(--text-body);
  font-size: 0.9rem;
  display: grid;
  gap: 12px;
  max-height: 60vh;
  overflow-y: auto;
}

/* ==========================================================================
   STICKY MOBILE BAR
   ========================================================================== */
.mobile-sticky-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 90;
  background: rgba(12, 15, 12, 0.96);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--line-strong);
  padding: 12px 20px calc(12px + env(safe-area-inset-bottom, 0px));
  display: none;
  align-items: center;
  justify-content: space-between;
  transform: translateY(105%);
  transition: transform 0.28s ease;
}

.mobile-sticky-cta.visible {
  transform: translateY(0);
}

.sticky-meta strong {
  display: block;
  font-family: var(--font-display);
  font-size: 0.9rem;
}

.sticky-meta span {
  font-size: 0.78rem;
  color: var(--green);
}

/* ==========================================================================
   SUBTLE REVEAL
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 1024px) {
  .main-nav {
    display: none;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .hero-layout,
  .split-layout,
  .pillars-header,
  .inside-layout,
  .perspective-block,
  .offer-ledger,
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .split-sticky {
    position: static;
  }
  .architectural-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .arch-col:nth-child(2) {
    border-right: 0;
  }
  .arch-col:nth-child(-n+2) {
    border-bottom: 1px solid var(--line);
  }
  .editorial-composition {
    max-width: 520px;
    margin: 0 auto;
    min-height: 500px;
  }
  .offer-book-col {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 44px 24px;
  }
}

@media (max-width: 680px) {
  .container {
    padding: 0 20px;
  }
  .header-buy-link {
    display: none;
  }
  .hero {
    padding: 40px 0 72px;
  }
  .hero-heading {
    font-size: clamp(2.75rem, 12vw, 3.8rem);
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
    margin-bottom: 36px;
  }
  .hero-actions .text-link {
    justify-content: center;
    border-bottom: 0;
  }
  .hero-meta-strip {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  .editorial-composition {
    min-height: auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    align-items: end;
    padding-bottom: 56px;
    margin-top: 14px;
    position: relative;
  }
  .comp-before {
    position: relative;
    top: auto;
    left: auto;
    width: 100%;
    aspect-ratio: 3 / 4;
    opacity: 0.96;
    filter: brightness(1.02) contrast(1.04);
    z-index: 1;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.6);
  }
  .comp-before figcaption {
    top: auto;
    bottom: 8px;
    left: 8px;
    font-size: 0.62rem;
    padding: 3px 7px;
  }
  .comp-after {
    position: relative;
    width: 100%;
    aspect-ratio: 3 / 4;
    z-index: 2;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.75);
  }
  .comp-after figcaption {
    bottom: 8px;
    right: 8px;
    font-size: 0.62rem;
    padding: 3px 7px;
  }
  .comp-book {
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 46%;
    max-width: 180px;
    z-index: 4;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.95);
  }
  .offer-price-line {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  .offer-price {
    font-size: 2.8rem;
    white-space: nowrap !important;
  }
  .section-split,
  .section-pillars,
  .section-inside,
  .section-process,
  .section-offer,
  .section-faq,
  .section-closing {
    padding: 76px 0;
  }
  .architectural-grid,
  .spread-content,
  .process-steps {
    grid-template-columns: 1fr;
  }
  .arch-col {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 32px 24px;
  }
  .arch-col:last-child {
    border-bottom: 0;
  }
  .sheet-left {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .sheet {
    min-height: auto;
    padding: 26px 20px;
  }
  .offer-info-col {
    padding: 36px 22px;
  }
  .offer-item {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .site-footer {
    padding-bottom: 100px;
  }
  .mobile-sticky-cta {
    display: flex;
  }
}