:root {
  --navy: #16396f;
  --navy-2: #0f2c56;
  --blue: #2c78d3;
  --green: #97cf59;
  --orange: #f28d22;
  --orange-2: #ffb13b;
  --text: #152033;
  --muted: #5f6b7d;
  --line: #dfe7f1;
  --bg: #f7fafc;
  --white: #ffffff;
  --shadow: 0 20px 60px rgba(13, 43, 84, 0.12);
  --radius: 24px;
}

* { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}
body {
  margin: 0;
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.narrow { width: min(760px, calc(100% - 32px)); }
.center { text-align: center; }
.left { text-align: left; }

.topbar {
  background: linear-gradient(90deg, var(--navy), var(--blue));
  color: #fff;
  text-align: center;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(255,255,255,0.86);
  border-bottom: 1px solid rgba(223,231,241,0.7);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--navy-2);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.brand img {
  width: 46px;
  height: 46px;
  object-fit: contain;
  border-radius: 50%;
}

.hero {
  background:
    radial-gradient(circle at top right, rgba(44, 120, 211, 0.10), transparent 24%),
    radial-gradient(circle at bottom left, rgba(151, 207, 89, 0.10), transparent 22%),
    linear-gradient(180deg, #f9fcff 0%, #ffffff 100%);
  padding: 72px 0 48px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.eyebrow, .section-tag, .mini-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.eyebrow, .section-tag {
  color: var(--blue);
  background: rgba(44,120,211,0.10);
  padding: 8px 12px;
  border-radius: 999px;
}
.hero h1,
.section h2 {
  margin: 18px 0 16px;
  letter-spacing: -0.04em;
  line-height: 1.02;
}
.hero h1 { font-size: clamp(2.5rem, 5vw, 4.7rem); max-width: 12ch; }
.section h2 { font-size: clamp(2rem, 4vw, 3.1rem); }
.lead,
.section-intro {
  color: var(--muted);
  font-size: 18px;
  max-width: 62ch;
}
.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0;
}
.point {
  padding: 10px 14px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-weight: 600;
  color: var(--navy-2);
  box-shadow: 0 8px 22px rgba(13, 43, 84, 0.06);
}
.price-box {
  display: flex;
  gap: 22px;
  align-items: center;
  justify-content: space-between;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}
.price-label { font-size: 13px; color: var(--muted); font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; }
.price-row { display: flex; align-items: baseline; gap: 12px; margin-top: 2px; }
.price { font-size: 42px; font-weight: 800; color: var(--navy-2); letter-spacing: -0.04em; }
.price-compare { color: #8b97aa; font-weight: 700; text-decoration: line-through; }
.price-note { margin: 4px 0 0; color: var(--muted); font-size: 14px; }
.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}
.trust-row span::before,
.bonus-lines span::before { content: '•'; margin-right: 8px; color: var(--green); }

.btn {
  border: 0;
  border-radius: 16px;
  font-weight: 800;
  line-height: 1.15;
  min-height: 48px;
  transition: 0.2s ease;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(180deg, var(--orange-2), var(--orange));
  color: #fff;
  padding: 16px 24px;
  box-shadow: 0 16px 34px rgba(242, 141, 34, 0.28);
}
.btn-outline {
  border: 1px solid var(--line);
  color: var(--navy-2);
  background: #fff;
  padding: 12px 16px;
}
.btn-light {
  background: #fff;
  color: var(--navy-2);
  padding: 14px 22px;
}
.btn-small { font-size: 14px; }
.btn-large { font-size: 18px; padding: 18px 30px; }

.hero-visual {
  display: flex;
  justify-content: center;
  perspective: 1400px;
  perspective-origin: center;
}
.book-card {
  --base-tilt-y: -12deg;
  --tilt-x: 0deg;
  --tilt-y: 0deg;
  position: relative;
  width: min(420px, 100%);
  border-radius: 30px;
  padding: 18px;
  background: linear-gradient(145deg, rgba(255,255,255,0.92), rgba(239,246,255,0.86));
  box-shadow: var(--shadow);
  border: 1px solid rgba(223,231,241,0.95);
  transform-style: preserve-3d;
  transform-origin: center;
  transform: rotateX(var(--tilt-x)) rotateY(calc(var(--base-tilt-y) + var(--tilt-y)));
  animation: book-float 6.8s ease-in-out infinite;
  transition: transform 0.35s ease;
}
.book-card::before {
  content: '';
  position: absolute;
  top: 20px;
  left: -8px;
  bottom: 20px;
  width: 12px;
  border-radius: 12px 0 0 12px;
  background: linear-gradient(180deg, rgba(20, 46, 86, 0.22), rgba(10, 28, 54, 0.42));
  transform: translateZ(-2px);
}
.book-card::after {
  content: '';
  position: absolute;
  inset: auto 8% -24px;
  height: 30px;
  background: radial-gradient(circle, rgba(8, 24, 46, 0.28), transparent 72%);
  filter: blur(8px);
  z-index: -1;
  animation: book-shadow 6.8s ease-in-out infinite;
}
.book-card img {
  width: 100%;
  border-radius: 22px;
  box-shadow: 0 22px 55px rgba(12, 36, 72, 0.18);
  transform: translateZ(28px);
  backface-visibility: hidden;
}
.book-glow {
  position: absolute;
  inset: 20% 10% auto;
  height: 180px;
  background: radial-gradient(circle, rgba(44, 120, 211, 0.18), transparent 70%);
  filter: blur(18px);
  pointer-events: none;
  transform: translateZ(12px);
  animation: glow-drift 6.8s ease-in-out infinite;
}

@keyframes book-float {
  0%, 100% { transform: rotateX(var(--tilt-x)) rotateY(calc(var(--base-tilt-y) + var(--tilt-y))) translateY(0); }
  50% { transform: rotateX(calc(var(--tilt-x) + 1deg)) rotateY(calc(var(--base-tilt-y) + var(--tilt-y) + 0.6deg)) translateY(-10px); }
}

@keyframes book-shadow {
  0%, 100% { transform: scale(1); opacity: 0.72; }
  50% { transform: scale(0.92); opacity: 0.48; }
}

@keyframes glow-drift {
  0%, 100% { transform: translateZ(12px) translateX(0); opacity: 0.7; }
  50% { transform: translateZ(12px) translateX(8px); opacity: 1; }
}

.logos-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.strip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 18px 0;
  text-align: center;
  font-weight: 700;
  color: var(--navy-2);
}

.section { padding: 88px 0; }
.section-soft { background: var(--bg); }
.vibe-section {
  background:
    radial-gradient(circle at top left, rgba(151, 207, 89, 0.12), transparent 34%),
    radial-gradient(circle at bottom right, rgba(44, 120, 211, 0.12), transparent 34%),
    #ffffff;
}
.vibe-grid {
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.vibe-card {
  margin: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 14px 34px rgba(13, 43, 84, 0.08);
}
.vibe-card img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}
.vibe-card figcaption {
  padding: 16px 18px 18px;
  font-weight: 700;
  color: var(--navy-2);
  line-height: 1.4;
}
.section-gradient {
  background: linear-gradient(180deg, #0e2648 0%, #143a70 100%);
  color: #fff;
}
.section-gradient .section-tag {
  background: rgba(255,255,255,0.14);
  color: #d9e9ff;
}
.section-gradient .section-intro { color: rgba(255,255,255,0.78); }
.cards {
  display: grid;
  gap: 22px;
  margin-top: 34px;
}
.cards.three { grid-template-columns: repeat(3, 1fr); }
.card {
  background: #fff;
  border-radius: 24px;
  padding: 28px;
  border: 1px solid var(--line);
  box-shadow: 0 14px 34px rgba(13, 43, 84, 0.06);
}
.card h3, .stack-card h3, .bonus-card h3, .preview-box h3 { margin: 0 0 10px; font-size: 24px; letter-spacing: -0.03em; }
.card p, .stack-card p, .bonus-card p { margin: 0; color: var(--muted); }
.dark-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  box-shadow: none;
}
.dark-card p { color: rgba(255,255,255,0.82); }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: start;
}
.reverse { grid-template-columns: 0.9fr 1.1fr; }
.feature-list,
.bonus-list,
.preview-box ul {
  margin: 24px 0 30px;
  padding: 0;
  list-style: none;
}
.feature-list li,
.bonus-list li,
.preview-box li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 14px;
}
.feature-list li::before,
.bonus-list li::before,
.preview-box li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--green);
  font-weight: 800;
}
.stack-boxes { display: grid; gap: 18px; }
.stack-card {
  border-radius: 24px;
  padding: 26px;
  color: #fff;
  box-shadow: var(--shadow);
}
.stack-card p { color: rgba(255,255,255,0.84); }
.mini-label { color: rgba(255,255,255,0.76); margin-bottom: 10px; }
.accent-blue { background: linear-gradient(135deg, #12386f, #2c78d3); }
.accent-green { background: linear-gradient(135deg, #3d8c52, #97cf59); }
.accent-orange { background: linear-gradient(135deg, #df7115, #f29c32); }

.preview-panel { display: flex; align-items: stretch; }
.preview-box {
  width: 100%;
  background: linear-gradient(180deg, #f9fbff, #eef5fc);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 30px;
  box-shadow: var(--shadow);
}
.preview-header {
  display: inline-block;
  padding: 8px 12px;
  background: rgba(44,120,211,0.10);
  color: var(--blue);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.mini-grid {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.mini-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.mini-card strong { font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.mini-card span { font-weight: 700; }

.bonus-section {
  background: linear-gradient(180deg, rgba(151,207,89,0.08), rgba(44,120,211,0.05));
}
.bonus-card {
  position: relative;
  background: linear-gradient(180deg, #ffb348, #f28d22);
  color: #fff;
  border-radius: 28px;
  padding: 34px;
  box-shadow: 0 22px 48px rgba(242,141,34,0.22);
}
.bonus-card p { color: rgba(255,255,255,0.86); }
.bonus-badge {
  position: absolute;
  top: -14px;
  right: 20px;
  background: var(--navy-2);
  color: #fff;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.bonus-lines {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 18px;
  font-weight: 700;
}
.bonus-lines span::before { color: #fff; }

.guarantee-box {
  background: linear-gradient(135deg, var(--navy), var(--blue));
  color: #fff;
  border-radius: 32px;
  padding: 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  box-shadow: var(--shadow);
}
.guarantee .section-tag { background: rgba(255,255,255,0.14); color: #fff; }
.guarantee h2 { margin-top: 14px; }
.guarantee p { margin: 0; color: rgba(255,255,255,0.82); font-size: 18px; }

.faq-list {
  margin-top: 28px;
  display: grid;
  gap: 14px;
}
details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px 20px;
}
summary {
  cursor: pointer;
  font-weight: 800;
  list-style: none;
}
summary::-webkit-details-marker { display: none; }
details p { margin: 12px 0 0; color: var(--muted); }
.final-cta {
  background: linear-gradient(180deg, #f8fbff 0%, #eef5fc 100%);
}
.cta-actions { margin-top: 28px; }
.micro-copy { margin: 14px 0 0; color: var(--muted); font-size: 14px; font-weight: 600; }

.site-footer {
  padding: 28px 0 100px;
  background: #fff;
  border-top: 1px solid var(--line);
}
.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.brand-footer img { width: 40px; height: 40px; }
.site-footer p { color: var(--muted); margin: 0; }

.sticky-cta {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 60;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px;
  border-radius: 18px;
  background: rgba(15,44,86,0.95);
  color: #fff;
  box-shadow: 0 18px 44px rgba(8, 25, 50, 0.28);
}
.sticky-cta strong { display: block; font-size: 18px; }
.sticky-cta span { color: rgba(255,255,255,0.72); font-size: 14px; }
.btn-small-mobile { padding: 14px 18px; white-space: nowrap; }

@media (max-width: 980px) {
  .hero-grid,
  .split,
  .reverse,
  .cards.three,
  .vibe-grid,
  .strip-grid {
    grid-template-columns: 1fr;
  }
  .hero { padding-top: 56px; }
  .hero-copy { order: 2; }
  .hero-visual { order: 1; }
  .hero h1 { max-width: 14ch; }
  .price-box,
  .guarantee-box,
  .footer-row {
    flex-direction: column;
    align-items: flex-start;
  }
  .book-card { --base-tilt-y: -7deg; }
}

@media (max-width: 720px) {
  :root {
    --radius: 20px;
    --shadow: 0 14px 36px rgba(13, 43, 84, 0.12);
  }

  .container,
  .narrow {
    width: min(100% - 24px, 520px);
  }

  .topbar {
    font-size: 11px;
    line-height: 1.35;
    padding: 8px 18px;
  }

  .site-header {
    position: relative;
  }

  .nav { padding: 10px 0; }

  .brand {
    gap: 9px;
    font-size: 15px;
  }

  .brand img {
    width: 38px;
    height: 38px;
  }

  .btn-outline { display: none; }

  .hero {
    padding: 34px 0 34px;
    background:
      radial-gradient(circle at 85% 4%, rgba(44, 120, 211, 0.12), transparent 32%),
      radial-gradient(circle at 6% 72%, rgba(151, 207, 89, 0.12), transparent 28%),
      linear-gradient(180deg, #f9fcff 0%, #ffffff 100%);
  }

  .hero-grid {
    gap: 28px;
  }

  .hero-copy {
    order: 1;
  }

  .hero-visual {
    order: 2;
    margin-top: 2px;
  }

  .hero h1,
  .section h2 {
    letter-spacing: -0.03em;
    line-height: 1.07;
  }

  .hero h1 {
    max-width: 11.8ch;
    font-size: clamp(2.15rem, 13vw, 3.35rem);
    margin-top: 14px;
  }

  .section h2 {
    font-size: clamp(1.85rem, 9vw, 2.45rem);
  }

  .lead,
  .section-intro,
  .guarantee p {
    font-size: 16px;
  }

  .eyebrow,
  .section-tag,
  .preview-header {
    font-size: 10px;
    line-height: 1.25;
    padding: 7px 10px;
  }

  .hero-points {
    display: grid;
    gap: 10px;
    margin: 22px 0;
  }

  .point {
    width: 100%;
    border-radius: 14px;
    padding: 11px 12px;
    font-size: 14px;
  }

  .price-box {
    padding: 16px;
    gap: 14px;
  }

  .price-box .btn,
  .split .btn,
  .cta-actions .btn,
  .guarantee-box .btn {
    width: 100%;
  }

  .price { font-size: 34px; }

  .price-row {
    flex-wrap: wrap;
    row-gap: 0;
  }

  .trust-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    margin-top: 16px;
  }

  .book-card {
    width: min(292px, 82vw);
    padding: 12px;
    border-radius: 24px;
    --base-tilt-y: -4deg;
  }

  .book-card::before {
    top: 14px;
    bottom: 14px;
    left: -5px;
    width: 8px;
  }

  .book-card img {
    border-radius: 18px;
  }

  .logos-strip {
    overflow: hidden;
  }

  .strip-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
    padding: 0;
  }

  .strip-grid div {
    padding: 13px 8px;
    font-size: 13px;
    border-bottom: 1px solid var(--line);
  }

  .strip-grid div:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .section { padding: 58px 0; }

  .vibe-grid,
  .cards,
  .split,
  .reverse {
    gap: 16px;
  }

  .vibe-card,
  .card,
  .stack-card,
  .preview-box,
  .bonus-card,
  .guarantee-box {
    border-radius: 18px;
  }

  .vibe-card img {
    height: 210px;
  }

  .vibe-card figcaption,
  .card,
  .stack-card,
  .preview-box,
  .bonus-card,
  .guarantee-box {
    padding: 20px;
  }

  .card h3,
  .stack-card h3,
  .bonus-card h3,
  .preview-box h3 {
    font-size: 21px;
  }

  .feature-list,
  .bonus-list,
  .preview-box ul {
    margin: 20px 0 24px;
  }

  .feature-list li,
  .bonus-list li,
  .preview-box li {
    padding-left: 24px;
    margin-bottom: 12px;
  }

  .mini-grid { grid-template-columns: 1fr; }

  .bonus-lines {
    display: grid;
    gap: 8px;
  }

  .guarantee-box {
    gap: 18px;
  }

  .faq-list {
    gap: 10px;
  }

  details {
    border-radius: 14px;
    padding: 16px;
  }

  .final-cta .section-intro {
    margin-left: auto;
    margin-right: auto;
  }

  .sticky-cta {
    left: 10px;
    right: 10px;
    bottom: max(10px, env(safe-area-inset-bottom));
    display: flex;
    gap: 10px;
    padding: 10px;
    border-radius: 16px;
  }

  .sticky-cta strong { font-size: 16px; }
  .sticky-cta span { font-size: 12px; }

  .btn-small-mobile {
    min-width: 132px;
    padding: 12px 14px;
  }

  .site-footer {
    padding: 24px 0 calc(100px + env(safe-area-inset-bottom));
  }

  .footer-row {
    align-items: center;
    text-align: center;
  }
}

@media (max-width: 380px) {
  .container,
  .narrow {
    width: min(100% - 20px, 520px);
  }

  .hero h1 {
    font-size: 2.05rem;
  }

  .price-box,
  .vibe-card figcaption,
  .card,
  .stack-card,
  .preview-box,
  .bonus-card,
  .guarantee-box {
    padding: 16px;
  }

  .sticky-cta {
    align-items: stretch;
  }

  .btn-small-mobile {
    min-width: 112px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .book-card,
  .book-card::after,
  .book-glow {
    animation: none;
  }
  .book-card {
    transition: none;
    transform: rotateY(-8deg);
  }
}