@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display&family=Source+Sans+3:wght@400;600&display=swap');

:root {
  --bg-primary: #0B1222;
  --bg-secondary: #111B2E;
  --bg-card: #162033;
  --bg-hover: #1A2740;
  --text-primary: #E2E8F0;
  --text-secondary: #8899AA;
  --text-tertiary: #556677;
  --accent: #10B981;
  --accent-hover: #059669;
  --accent-subtle: rgba(16, 185, 129, 0.08);
  --border: #1E2D42;
  --border-hover: #2A3F5A;
  --font-display: 'DM Serif Display', serif;
  --font-body: 'Source Sans 3', sans-serif;
  --max-width: 1140px;
  --max-text: 640px;
  --section-padding: clamp(64px, 10vw, 160px);
  --radius: 6px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text-primary);
  background-color: var(--bg-primary);
}

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 150ms ease;
}

a:hover {
  color: var(--accent);
}

img {
  max-width: 100%;
  display: block;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.section-headline {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.subheadline {
  font-size: 20px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 32px;
  background-color: var(--accent);
  color: #0B1222;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 200ms ease, transform 200ms ease;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  color: #0B1222;
  transform: scale(1.02);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 32px;
  background-color: transparent;
  color: var(--accent);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 200ms ease, transform 200ms ease;
}

.btn-secondary:hover {
  background-color: var(--accent-subtle);
  transform: scale(1.02);
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  background-color: transparent;
  transition: background-color 200ms ease, padding 200ms ease, box-shadow 200ms ease;
}

.nav--scrolled {
  background-color: var(--bg-secondary);
  padding: 14px 0;
  box-shadow: 0 1px 0 var(--border);
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--text-primary);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav__links a {
  font-size: 15px;
  color: var(--text-secondary);
}

.nav__links a:hover {
  color: var(--accent);
}

.hero {
  padding-top: calc(var(--section-padding) + 80px);
  padding-bottom: var(--section-padding);
  text-align: center;
}

.hero__headline {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 72px);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  max-width: 900px;
  margin: 0 auto 24px;
}

.hero__sub {
  font-size: 20px;
  color: var(--text-secondary);
  max-width: var(--max-text);
  margin: 0 auto 48px;
  line-height: 1.6;
}

.problem {
  padding: var(--section-padding) 0;
}

.problem__content {
  max-width: var(--max-text);
}

.problem__content .label {
  margin-bottom: 16px;
}

.problem__content .section-headline {
  margin-bottom: 32px;
}

.problem__content p {
  color: var(--text-secondary);
  font-size: 18px;
  line-height: 1.65;
  margin-bottom: 24px;
}

.problem__content p:last-child {
  margin-bottom: 0;
}

.how-it-works {
  padding: var(--section-padding) 0;
  border-top: 1px solid var(--border);
}

.how-it-works .label {
  margin-bottom: 16px;
}

.how-it-works .section-headline {
  margin-bottom: 64px;
}

.how-it-works__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}

.how-it-works__step {
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 200ms ease, background-color 200ms ease;
}

.how-it-works__step:hover {
  border-color: var(--border-hover);
  background-color: var(--bg-card);
}

.how-it-works__number {
  font-family: var(--font-display);
  font-size: 48px;
  color: var(--text-tertiary);
  line-height: 1;
  margin-bottom: 20px;
}

.how-it-works__step h3 {
  font-family: var(--font-body);
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.how-it-works__step p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.6;
}

.who-its-for {
  padding: var(--section-padding) 0;
  border-top: 1px solid var(--border);
}

.who-its-for .label {
  margin-bottom: 16px;
}

.who-its-for .section-headline {
  margin-bottom: 64px;
}

.who-its-for__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.who-its-for__card {
  padding: 40px;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 200ms ease;
}

.who-its-for__card:hover {
  border-color: var(--border-hover);
}

.who-its-for__card h3 {
  font-family: var(--font-body);
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.who-its-for__card p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.6;
}

.social-proof {
  padding: var(--section-padding) 0;
  border-top: 1px solid var(--border);
}

.social-proof .label {
  margin-bottom: 16px;
  text-align: center;
}

.social-proof .section-headline {
  text-align: center;
  margin-bottom: 64px;
}

.social-proof__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  text-align: center;
}

.social-proof__stat {
  padding: 32px;
}

.social-proof__number {
  font-family: var(--font-display);
  font-size: clamp(44px, 5vw, 64px);
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
}

.social-proof__desc {
  font-size: 16px;
  color: var(--text-secondary);
}

.pricing {
  padding: var(--section-padding) 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.pricing .label {
  margin-bottom: 16px;
}

.pricing .section-headline {
  margin-bottom: 48px;
}

.pricing__card {
  max-width: 520px;
  margin: 0 auto;
  padding: 48px;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 200ms ease;
}

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

.pricing__price {
  font-family: var(--font-display);
  font-size: 48px;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.pricing__period {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.pricing__features {
  list-style: none;
  text-align: left;
  margin-bottom: 40px;
}

.pricing__features li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 16px;
}

.pricing__features li:last-child {
  border-bottom: none;
}

.cta-section {
  padding: var(--section-padding) 0;
  background-color: var(--accent-subtle);
  text-align: center;
}

.cta-section .section-headline {
  margin-bottom: 16px;
}

.cta-section .subheadline {
  margin-bottom: 40px;
  max-width: var(--max-text);
  margin-left: auto;
  margin-right: auto;
}

.blog-teaser {
  padding: var(--section-padding) 0;
  border-top: 1px solid var(--border);
}

.blog-teaser .label {
  margin-bottom: 16px;
}

.blog-teaser .section-headline {
  margin-bottom: 48px;
}

.blog-teaser__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.blog-teaser__card {
  padding: 32px;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 200ms ease, transform 200ms ease;
}

.blog-teaser__card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.blog-teaser__date {
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 16px;
}

.blog-teaser__card h3 {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.4;
}

.blog-teaser__card p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
}

.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

.footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__copy {
  font-size: 14px;
  color: var(--text-tertiary);
}

.footer__links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer__links a {
  font-size: 14px;
  color: var(--text-tertiary);
}

.footer__links a:hover {
  color: var(--accent);
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 250ms ease, transform 250ms ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.hero__stat {
  font-size: 14px;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  margin-top: 24px;
}

.pricing__tagline {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 32px;
}

.pricing__note {
  font-size: 14px;
  color: var(--text-tertiary);
  margin-top: 16px;
}

.social-proof__tagline {
  text-align: center;
  color: var(--text-secondary);
  margin-top: 48px;
  font-size: 17px;
}

.footer__email {
  font-size: 14px;
  color: var(--text-tertiary);
}

.footer__email:hover {
  color: var(--accent);
}

.data-sources {
  padding: var(--section-padding) 0;
}

@media (max-width: 768px) {
  .nav__links {
    gap: 20px;
  }

  .nav__links a {
    font-size: 14px;
  }

  .hero {
    padding-top: calc(var(--section-padding) + 60px);
  }

  .hero__sub {
    font-size: 18px;
    margin-bottom: 32px;
  }

  .how-it-works__grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .who-its-for__grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .social-proof__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .blog-teaser__grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .pricing__card {
    padding: 32px 24px;
  }

  .footer .container {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .container {
    padding: 0 20px;
  }
}