:root {
  --background: #FAFAF8;
  --surface: #FFFFFF;
  --surface-2: #F5F5F2;
  --text: #11110F;
  --muted: #66665B;
  --muted-2: #8C8C80;
  --border: #EDEDE8;
  --border-strong: #D8D8D0;
  --brand: #245BFF;
  --brand-hover: #123EF2;
  --brand-soft: #EEF4FF;
  --brand-border: #D9E6FF;
  --success: #17B26A;
  --font-sans: "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 2px rgba(17, 17, 15, 0.06);
  --shadow-md: 0 8px 24px rgba(17, 17, 15, 0.08);
  --shadow-lg: 0 24px 80px rgba(17, 17, 15, 0.14);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background:
    radial-gradient(circle at 80% 5%, rgba(36, 91, 255, 0.13), transparent 420px),
    radial-gradient(circle at 8% 18%, rgba(36, 91, 255, 0.06), transparent 360px),
    var(--background);
  line-height: 1.5;
}

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.nav {
  padding: 24px 0 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  row-gap: 10px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: -0.035em;
  white-space: nowrap;
}

.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--text);
  position: relative;
  box-shadow: var(--shadow-md);
  flex: 0 0 auto;
}

.logo-mark::after {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 6px;
  background: var(--brand);
  box-shadow: 0 0 34px rgba(36, 91, 255, 0.45);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
}

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

.nav-divider {
  width: 1px;
  height: 18px;
  background: var(--border-strong);
  flex: 0 0 auto;
}

.nav-actions a.nav-brain {
  color: var(--brand-hover);
  font-weight: 650;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  padding: 0;
  margin-left: auto;
}

.nav-toggle-bar {
  display: block;
  width: 16px;
  height: 2px;
  background: var(--text);
  transition: transform 200ms ease, opacity 200ms ease;
}

.nav-toggle.active .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle.active .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  padding: 12px 18px;
  font-weight: 650;
  font-size: 14px;
  line-height: 1;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
  white-space: nowrap;
  border: 1px solid transparent;
}

.button-primary {
  background: var(--brand);
  color: white;
  border-color: var(--brand);
  box-shadow: 0 0 40px rgba(36, 91, 255, 0.28);
}

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

.button-secondary {
  background: var(--surface);
  border-color: var(--border);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

.button-secondary:hover { border-color: var(--border-strong); transform: translateY(-1px); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: var(--radius-full);
  border: 1px solid var(--brand-border);
  background: var(--brand-soft);
  color: var(--brand-hover);
  padding: 7px 11px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: -0.02em;
  width: fit-content;
}

.pulse {
  width: 7px;
  height: 7px;
  border-radius: var(--radius-full);
  background: var(--brand);
  box-shadow: 0 0 0 6px rgba(36, 91, 255, 0.10);
  flex: 0 0 auto;
}

.hero {
  padding: 76px 0 64px;
  max-width: 800px;
}

h1 {
  margin: 22px 0 20px;
  font-size: clamp(42px, 6vw, 68px);
  line-height: 0.98;
  letter-spacing: -0.06em;
  font-weight: 650;
}

.hero-copy {
  margin: 0 0 28px;
  max-width: 680px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.58;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.trust {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: -0.02em;
}

.dot {
  width: 4px;
  height: 4px;
  background: var(--border-strong);
  border-radius: var(--radius-full);
}

section { padding: 64px 0; }

.section-head {
  display: grid;
  grid-template-columns: 0.92fr 0.58fr;
  gap: 48px;
  align-items: end;
  margin-bottom: 32px;
}

h2 {
  margin: 14px 0 0;
  font-size: clamp(32px, 4.4vw, 48px);
  line-height: 1;
  letter-spacing: -0.05em;
  font-weight: 650;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.pain-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.pain-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 20px;
  min-height: 140px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
}

.pain-card .icon {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--brand);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
}

.pain-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.35;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.offer-card {
  background: var(--surface);
  border: 1px solid var(--brand-border);
  border-radius: 32px;
  box-shadow: var(--shadow-lg), 0 0 70px rgba(36, 91, 255, 0.13);
  padding: clamp(26px, 5vw, 44px);
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 36px;
  align-items: start;
}

.offer-card h2 { max-width: 560px; }

.offer-copy {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.62;
  margin: 18px 0 26px;
}

.deliverables { display: grid; gap: 10px; }

.deliverable {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 13px 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface-2);
  color: var(--text);
  font-size: 15px;
  line-height: 1.4;
}

.check { color: var(--brand); font-weight: 700; flex: 0 0 auto; }

.price-box {
  background: var(--text);
  color: #FAFAF8;
  border-radius: 24px;
  padding: 24px;
}

.price-box .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  color: #B8B8AC;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.price {
  font-size: clamp(38px, 5vw, 56px);
  line-height: 0.95;
  letter-spacing: -0.06em;
  font-weight: 650;
  margin: 14px 0 14px;
}

.price-box p {
  color: #B8B8AC;
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.55;
}

.faq-list { display: grid; gap: 10px; }

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 18px 20px;
}

.faq-item h3 {
  margin: 0 0 8px;
  font-size: 17px;
  letter-spacing: -0.03em;
  line-height: 1.3;
}

.faq-item p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.related-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.related-card h3 {
  margin: 0;
  font-size: 16px;
  letter-spacing: -0.03em;
}

.related-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.related-card span.link {
  margin-top: auto;
  color: var(--brand-hover);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
}

.cta {
  margin: 30px auto 86px;
  border-radius: 34px;
  background:
    radial-gradient(circle at 84% 18%, rgba(36, 91, 255, 0.28), transparent 360px),
    #11110F;
  color: #FAFAF8;
  padding: clamp(32px, 6vw, 60px);
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 30px;
  align-items: end;
}

.cta h2 { color: #FAFAF8; max-width: 780px; }

.cta p {
  color: #B8B8AC;
  max-width: 740px;
  margin: 16px 0 0;
  font-size: 17px;
  line-height: 1.6;
}

.cta .button-secondary { background: #FAFAF8; border-color: #FAFAF8; }

footer {
  padding: 0 0 38px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: -0.02em;
}

.footer-links { display: flex; gap: 16px; }
.footer-links a:hover { color: var(--text); }

@media (max-width: 980px) {
  .section-head,
  .offer-card,
  .cta {
    grid-template-columns: 1fr;
  }

  .pain-grid,
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 680px) {
  .container { width: min(100% - 28px, 1120px); }
  .nav-toggle { display: flex; }
  .nav-actions { flex-basis: 100%; }

  .nav-actions.open {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding-top: 8px;
  }

  .nav-actions.open a:not(.button) { display: block; }
  .nav-actions a:not(.button) { display: none; }

  .nav-divider { display: none; }
  .nav-actions.open .nav-divider {
    display: block;
    width: 100%;
    height: 1px;
    margin: 2px 0;
  }

  h1 { font-size: 44px; }
  .hero-copy { font-size: 17px; }

  .pain-grid,
  .related-grid {
    grid-template-columns: 1fr;
  }

  section { padding: 48px 0; }

  .cta {
    margin-bottom: 56px;
    border-radius: 26px;
  }
}