/* ===== Design Tokens ===== */
:root {
  --bg: #04141a;
  --bg-2: #061c24;
  --bg-3: #082530;
  --surface: #0a2a35;
  --cyan: #1ee0ff;
  --cyan-2: #00b8d4;
  --text: #e8f7fb;
  --muted: #8aa6ae;
  --border: rgba(30, 224, 255, 0.18);
  --shadow-cyan: 0 10px 40px -10px rgba(30,224,255,0.6);
  --radius: 14px;
  --max: 1200px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  background-image:
    radial-gradient(ellipse at top, rgba(30,224,255,0.08), transparent 60%),
    linear-gradient(180deg, #04141a 0%, #03101a 100%);
}

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

.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 820px; margin: 0 auto; }
.center { text-align: center; }
.text-cyan { color: var(--cyan); }

/* ===== Typography ===== */
h1, h2, h3, .display {
  font-family: 'Anton', 'Inter', sans-serif;
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1;
  text-transform: uppercase;
}
h1 { font-size: clamp(2.5rem, 7vw, 5.5rem); }
.display { font-size: clamp(2rem, 4.5vw, 3.5rem); line-height: 1.05; }
h3 { font-size: 1.25rem; letter-spacing: 0.02em; }

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--cyan);
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(30,224,255,0.06);
  margin-bottom: 18px;
}

.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.lead { font-size: 1.15rem; color: var(--muted); margin-top: 22px; max-width: 540px; }
.big-text { font-size: 1.25rem; margin: 24px 0; }
.big-quote { font-family: 'Anton', sans-serif; font-size: clamp(1.5rem, 3vw, 2.25rem); text-transform: uppercase; margin: 50px auto; max-width: 800px; line-height: 1.2; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: all 0.25s ease;
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--cyan);
  color: #001218;
}
.btn-primary:hover { background: #5cebff; transform: translateY(-2px); }
.btn-lg { padding: 18px 34px; font-size: 1rem; }
.btn-glow {
  box-shadow: var(--shadow-cyan);
  animation: pulse-glow 2.4s ease-in-out infinite;
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(30,224,255,0.5), var(--shadow-cyan); }
  50% { box-shadow: 0 0 0 14px rgba(30,224,255,0), var(--shadow-cyan); }
}

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(4, 20, 26, 0.75);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px;
}
.logo {
  font-family: 'Anton', sans-serif;
  font-size: 1.5rem;
  letter-spacing: 0.04em;
  color: #fff;
}
.logo span { color: var(--cyan); }

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 60px 0 80px;
  overflow: hidden;
}
.hero-bg-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Anton', sans-serif;
  font-size: 22vw;
  color: var(--cyan);
  opacity: 0.04;
  letter-spacing: -0.05em;
  pointer-events: none;
  white-space: nowrap;
  z-index: 0;
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}
.badge {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--border);
  background: rgba(30,224,255,0.08);
  color: var(--cyan);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.hero-cta {
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
  margin: 32px 0 28px;
}
.stars-wrap { display: flex; flex-direction: column; }
.stars { color: var(--cyan); letter-spacing: 4px; font-size: 1rem; }
.stars.small { font-size: 0.85rem; letter-spacing: 2px; }
.stars-wrap span { color: var(--muted); font-size: 0.85rem; }

.hero-features {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  max-width: 460px;
}
.hero-features li { display: flex; align-items: center; gap: 10px; color: var(--text); font-size: 0.95rem; }
.check { color: var(--cyan); font-size: 0.7rem; }

.hero-book {
  position: relative;
  display: flex;
  justify-content: center;
}
.hero-book img {
  max-height: 620px;
  width: auto;
  filter: drop-shadow(0 30px 60px rgba(30,224,255,0.25)) drop-shadow(0 0 80px rgba(30,224,255,0.15));
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50% { transform: translateY(-14px) rotate(-2deg); }
}
.floating-tag {
  position: absolute;
  top: 30px; right: 0;
  background: var(--cyan);
  color: #001218;
  font-family: 'Anton', sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  padding: 16px 22px;
  border-radius: 999px;
  text-align: center;
  line-height: 1.1;
  transform: rotate(8deg);
  box-shadow: var(--shadow-cyan);
}

/* ===== Stats ===== */
.stats {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 40px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-num {
  font-family: 'Anton', sans-serif;
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  color: var(--cyan);
  line-height: 1;
}
.stat-label {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 8px;
}

/* ===== Sections ===== */
.section { padding: 90px 0; }
.dark-section {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.section-head { margin-bottom: 50px; }
.section-head .muted { max-width: 600px; margin: 16px auto 0; }

/* ===== Quote boxes ===== */
.quote-grid {
  display: grid;
  gap: 16px;
  margin-top: 40px;
}
.quote-box {
  padding: 24px;
  background: var(--surface);
  border-left: 4px solid rgba(30,224,255,0.3);
  border-radius: 8px;
  font-size: 1.1rem;
  color: var(--muted);
}
.quote-box.highlight {
  border-left-color: var(--cyan);
  color: var(--text);
  background: linear-gradient(90deg, rgba(30,224,255,0.12), transparent);
  font-weight: 600;
}

/* ===== Pillars ===== */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.pillar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 26px;
  transition: all 0.3s ease;
}
.pillar:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
  box-shadow: 0 20px 40px -20px rgba(30,224,255,0.4);
}
.pillar-icon { font-size: 2.2rem; margin-bottom: 14px; }
.pillar h3 { color: var(--cyan); margin-bottom: 10px; }
.pillar p { color: var(--muted); font-size: 0.95rem; }

/* ===== Two-col ===== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.two-col .eyebrow { margin-bottom: 18px; }
.two-col .display { margin-bottom: 20px; }
.two-col .muted { margin-bottom: 28px; }
.book-side img {
  max-height: 540px;
  margin: 0 auto;
  filter: drop-shadow(0 30px 60px rgba(30,224,255,0.3));
}
.check-list {
  list-style: none;
  margin: 24px 0 32px;
}
.check-list li {
  padding: 12px 0 12px 36px;
  border-bottom: 1px solid var(--border);
  position: relative;
  color: var(--text);
}
.check-list li::before {
  content: '✓';
  position: absolute; left: 0; top: 12px;
  color: var(--cyan);
  font-weight: 700;
  width: 24px; height: 24px;
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(30,224,255,0.12);
  border-radius: 50%;
  font-size: 0.85rem;
}

/* ===== Chapters ===== */
.chapters {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.chapter {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 16px 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 0.95rem;
  transition: all 0.2s;
}
.chapter:hover { border-color: var(--cyan); transform: translateX(4px); }
.chapter span {
  font-family: 'Anton', sans-serif;
  font-size: 1.5rem;
  color: var(--cyan);
  min-width: 40px;
}
.chapter.highlight {
  background: linear-gradient(90deg, rgba(30,224,255,0.18), var(--surface));
  border-color: var(--cyan);
}

/* ===== Testimonials ===== */
.testimonials {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
}
.testimonial p {
  margin: 16px 0 24px;
  font-style: italic;
  color: var(--text);
}
.author { display: flex; flex-direction: column; gap: 2px; }
.author strong { color: var(--cyan); }
.author span { color: var(--muted); font-size: 0.85rem; }

/* ===== Author ===== */
.author-card {
  background: linear-gradient(135deg, rgba(30,224,255,0.15), var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 50px 30px;
  text-align: center;
}
.author-avatar {
  width: 130px; height: 130px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: var(--cyan);
  color: #001218;
  font-family: 'Anton', sans-serif;
  font-size: 3rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-cyan);
}
.author-card strong { display: block; font-size: 1.25rem; margin-bottom: 4px; }
.author-card span { color: var(--muted); font-size: 0.9rem; }

/* ===== FAQ ===== */
.faq { display: flex; flex-direction: column; gap: 12px; }
.faq details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px;
  transition: all 0.2s;
}
.faq details[open] { border-color: var(--cyan); }
.faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 1.05rem;
}
.faq summary::after {
  content: '+';
  color: var(--cyan);
  font-size: 1.5rem;
  font-weight: 300;
  transition: transform 0.2s;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { margin-top: 14px; color: var(--muted); }

/* ===== Final CTA ===== */
.final-cta {
  background: radial-gradient(ellipse at center, rgba(30,224,255,0.18), transparent 70%), var(--bg);
  border-top: 1px solid var(--border);
}
.final-cta .display { margin: 18px 0 24px; }
.trust {
  list-style: none;
  display: flex; gap: 24px; flex-wrap: wrap; justify-content: center;
  margin-top: 30px;
  color: var(--muted);
  font-size: 0.9rem;
}

/* ===== Footer ===== */
footer {
  padding: 30px 0;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

/* ===== Sticky CTA mobile ===== */
.sticky-cta {
  display: none;
  position: fixed;
  bottom: 16px; left: 16px; right: 16px;
  background: var(--cyan);
  color: #001218;
  text-align: center;
  padding: 16px;
  border-radius: 999px;
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.9rem;
  z-index: 100;
  box-shadow: var(--shadow-cyan);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .hero-grid, .two-col { grid-template-columns: 1fr; }
  .hero-book { order: -1; }
  .hero-book img { max-height: 420px; }
  .pillars { grid-template-columns: 1fr 1fr; }
  .testimonials { grid-template-columns: 1fr; }
  .chapters { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .floating-tag { right: 10px; }
  .section { padding: 60px 0; }
  .sticky-cta { display: block; }
  .site-header .btn { padding: 10px 16px; font-size: 0.75rem; }
}
@media (max-width: 560px) {
  .pillars { grid-template-columns: 1fr; }
  .hero-features { grid-template-columns: 1fr; }
  h1 { font-size: 2.75rem; }
}