:root {
  --bg: #f8fafb;
  --bg-card: #ffffff;
  --bg-card-hover: #f0f4f8;
  --bg-alt: #edf4f9;
  --fg: #1a2b3c;
  --fg-muted: #5a6d7e;
  --fg-light: #8a9bb0;
  --accent: #2d8a6e;
  --accent-hover: #247059;
  --accent-dim: rgba(45, 138, 110, 0.08);
  --accent-light: #e8f6f1;
  --blue: #3b6fa8;
  --blue-dim: rgba(59, 111, 168, 0.08);
  --blue-light: #eaf1f9;
  --amber: #c8893c;
  --border: rgba(45, 138, 110, 0.12);
  --border-subtle: rgba(0,0,0,0.06);
  --shadow: 0 2px 16px rgba(26, 43, 60, 0.06);
  --shadow-md: 0 4px 32px rgba(26, 43, 60, 0.10);
  --radius: 12px;
  --radius-lg: 20px;
  --max-w: 1160px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .label {
  font-family: 'Space Grotesk', sans-serif;
}

/* ── Utility ── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 5%;
}

.label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.label::before {
  content: '';
  display: inline-block;
  width: 18px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

/* ── Nav ── */
.nav-bar {
  background: rgba(248, 250, 251, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1rem 5%;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
  background: var(--accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-logo-name {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--fg);
}

.nav-spacer { flex: 1; }

.nav-cta {
  background: var(--accent);
  color: #fff;
  padding: 0.55rem 1.4rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: background 0.15s, transform 0.1s;
}

.nav-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

/* ── Hero ── */
.hero {
  padding: 5rem 5% 4rem;
  background: linear-gradient(180deg, #edf4f9 0%, var(--bg) 100%);
}

.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--accent-light);
  border: 1px solid rgba(45,138,110,0.15);
  border-radius: 100px;
  padding: 0.35rem 0.9rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--fg);
  margin-bottom: 1rem;
}

.hero-title span {
  color: var(--accent);
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 460px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: #fff;
  padding: 0.85rem 2rem;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1rem;
  box-shadow: 0 4px 20px rgba(45, 138, 110, 0.3);
  transition: background 0.15s, transform 0.15s, box-shadow 0.15s;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(45, 138, 110, 0.4);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.85rem 0.5rem;
  border-bottom: 1px solid var(--border);
  transition: color 0.15s;
}

.btn-ghost:hover { color: var(--fg); }

.hero-price-tag {
  margin-top: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.price-amount {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--fg);
}

.price-label {
  font-size: 0.85rem;
  color: var(--fg-muted);
  line-height: 1.4;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.book-mockup {
  position: relative;
  width: 280px;
  background: var(--accent);
  border-radius: 6px 18px 18px 6px;
  box-shadow: var(--shadow-md), -20px 20px 60px rgba(45, 138, 110, 0.15);
  padding: 2rem 1.5rem 2rem 2.5rem;
}

.book-mockup::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 14px;
  background: rgba(0,0,0,0.12);
  border-radius: 6px 0 0 6px;
}

.book-mockup-inner {
  color: rgba(255,255,255,0.9);
}

.book-mockup-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  opacity: 0.7;
  margin-bottom: 1rem;
}

.book-mockup-main {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
  color: #fff;
}

.book-mockup-pages {
  font-size: 0.75rem;
  opacity: 0.6;
  margin-top: 0.75rem;
}

/* ── Section base ── */
.section {
  padding: 5rem 5%;
}

.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

/* ── What's different ── */
.diff-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.diff-header {
  margin-bottom: 3.5rem;
}

.diff-header h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 0.75rem;
}

.diff-header p {
  font-size: 1.05rem;
  color: var(--fg-muted);
  max-width: 560px;
  line-height: 1.7;
}

.diff-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.diff-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.diff-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.diff-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--accent);
}

.diff-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.6rem;
}

.diff-card p {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ── Chapters / What You'll Learn ── */
.chapters-header {
  max-width: var(--max-w);
  margin: 0 auto 3rem;
}

.chapters-header h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 0.75rem;
}

.chapters-header p {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

.chapters-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.chapter-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: transform 0.2s;
}

.chapter-card:hover { transform: translateY(-2px); }

.chapter-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  display: block;
}

.chapter-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--fg);
  line-height: 1.4;
}

.chapter-card p {
  font-size: 0.8rem;
  color: var(--fg-muted);
  margin-top: 0.5rem;
  line-height: 1.55;
}

/* ── Who This Is For ── */
.who-header {
  text-align: center;
  margin-bottom: 3rem;
}

.who-header h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 0.75rem;
}

.who-header p {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 520px;
  margin: 0 auto;
}

.who-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.who-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow);
  text-align: center;
}

.who-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 1.6rem;
}

.who-icon SSI { background: var(--blue-light); }
.who-icon SSDI { background: var(--accent-light); }
.who-icon RETURN { background: #fdf4e7; }

.who-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.5rem;
}

.who-card .who-type {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.who-card p {
  font-size: 0.88rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ── Table of Contents ── */
.toc-header {
  max-width: 760px;
  margin: 0 auto 3rem;
  text-align: center;
}

.toc-header h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 0.75rem;
}

.toc-header p {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

.toc-list {
  max-width: 760px;
  margin: 0 auto;
}

.toc-item {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.toc-item:last-child { border-bottom: none; }

.toc-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  min-width: 24px;
}

.toc-item span {
  font-size: 0.95rem;
  color: var(--fg);
  font-weight: 500;
}

/* ── Author ── */
.author-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3rem;
  align-items: center;
}

.author-photo {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-light), var(--blue-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
}

.author-text h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 0.5rem;
}

.author-tagline {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.author-bio {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.75;
}

/* ── Testimonials ── */
.testi-header {
  text-align: center;
  margin-bottom: 3rem;
}

.testi-header h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 0.75rem;
}

.testi-header p {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

.testi-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.testi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
}

.stars {
  color: #e8a93a;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
}

.testi-card blockquote {
  font-size: 0.92rem;
  color: var(--fg);
  line-height: 1.7;
  font-style: italic;
  margin-bottom: 1.5rem;
}

.testi-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.testi-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--fg-muted);
}

.testi-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--fg);
}

.testi-detail {
  font-size: 0.78rem;
  color: var(--fg-light);
}

/* ── FAQ ── */
.faq-header {
  text-align: center;
  margin-bottom: 3rem;
}

.faq-header h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 0.75rem;
}

.faq-header p {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.25rem 0;
}

.faq-item:first-child { border-top: 1px solid var(--border-subtle); }

.faq-q {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.6rem;
}

.faq-a {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* ── Final CTA ── */
.final-cta {
  background: linear-gradient(135deg, #1a2b3c 0%, #2d4a63 100%);
  padding: 6rem 5%;
  text-align: center;
}

.final-cta-inner {
  max-width: 640px;
  margin: 0 auto;
}

.final-cta h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.final-cta p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.btn-final {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: #fff;
  padding: 1rem 2.5rem;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  box-shadow: 0 6px 28px rgba(45, 138, 110, 0.4);
  transition: background 0.15s, transform 0.15s;
}

.btn-final:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
}

.final-price {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
}

.final-price strong {
  color: rgba(255,255,255,0.85);
}

/* ── Footer ── */
footer {
  background: var(--bg);
  border-top: 1px solid var(--border-subtle);
  padding: 3rem 5%;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-logo-icon {
  width: 24px;
  height: 24px;
  background: var(--accent);
  border-radius: 6px;
}

.footer-name {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--fg);
}

.footer-copy {
  margin-left: auto;
  font-size: 0.82rem;
  color: var(--fg-light);
}

/* ── Mobile ── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 3rem; }
  .hero-visual { order: -1; }
  .diff-grid { grid-template-columns: 1fr 1fr; }
  .chapters-grid { grid-template-columns: 1fr 1fr; }
  .who-grid { grid-template-columns: 1fr; }
  .testi-grid { grid-template-columns: 1fr; }
  .author-inner { grid-template-columns: 1fr; text-align: center; }
  .author-photo { margin: 0 auto; }
}

@media (max-width: 600px) {
  .hero { padding: 3rem 5% 3rem; }
  .diff-grid { grid-template-columns: 1fr; }
  .chapters-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 2rem; }
  .book-mockup { width: 220px; }
  .nav-cta { padding: 0.45rem 1rem; font-size: 0.82rem; }
  .section { padding: 4rem 5%; }
  .final-cta { padding: 4rem 5%; }
}