:root {
  --primary: #1bb8b0;
  --primary-dark: #0f8f86;
  --primary-light: #ddf5f2;
  --accent: #2ec4b6;
  --navy: #1a2b3c;
  --bg: #f5f8fa;
  --surface: #ffffff;
  --text: #1f2933;
  --muted: #64748b;
  --border: #e2e8f0;
  --dark: #1a1a2e;
  --placeholder: #2d2d3a;
  --shadow: 0 12px 40px rgba(15, 143, 134, 0.12);
  --radius: 16px;
  --max-width: 1140px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

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

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

.container {
  width: min(100% - 32px, var(--max-width));
  margin-inline: auto;
}

.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--surface);
}

.section-title {
  margin: 0 0 12px;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.section-lead {
  margin: 0 auto 40px;
  max-width: 640px;
  color: var(--muted);
  font-size: 1.05rem;
  text-align: center;
}

.section-lead--flush {
  margin-bottom: 0;
}

.text-center {
  text-align: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: 0 8px 24px rgba(15, 143, 134, 0.28);
}

.btn-primary:hover {
  box-shadow: 0 12px 28px rgba(15, 143, 134, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--primary-dark);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary-light);
}

.btn-light {
  background: #fff;
  color: var(--primary-dark);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.site-header.scrolled {
  border-color: var(--border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0;
}

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-img {
  display: block;
  height: 40px;
  width: auto;
  max-width: min(220px, 42vw);
  border-radius: 8px;
}

.logo-img--footer {
  height: 44px;
  margin-bottom: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

.site-nav a:hover {
  color: var(--primary-dark);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  border-radius: 2px;
}

/* Hero */
.hero {
  padding: 72px 0 96px;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(46, 196, 182, 0.18), transparent),
    var(--bg);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 520px;
}

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

.placeholder-image {
  aspect-ratio: 16 / 10;
  background: var(--placeholder);
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.95rem;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow);
}

.seo-image,
.hero-preview {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* Pain cards */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin: 32px 0 24px;
  padding: 0;
  list-style: none;
}

.pain-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  font-size: 0.95rem;
  color: var(--text);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.03);
}

.pain-card::before {
  content: '“';
  display: block;
  color: var(--accent);
  font-size: 1.5rem;
  line-height: 1;
  margin-bottom: 4px;
}

/* How helps */
.blocks-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.help-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 6px 24px rgba(15, 143, 134, 0.06);
}

.help-block .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary-dark);
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.help-block h3 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}

.help-block p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 0.92rem;
}

.help-block ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.help-block li {
  padding: 6px 0 6px 22px;
  position: relative;
  font-size: 0.9rem;
}

.help-block li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

/* Feature cards */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.feature-card h3 {
  margin: 0 0 12px;
  color: var(--primary-dark);
}

.feature-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-card li {
  padding: 5px 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.feature-card li::before {
  content: '• ';
  color: var(--accent);
}

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.gallery-item {
  margin: 0;
}

.gallery-item .seo-image {
  aspect-ratio: 16 / 10;
  object-fit: cover;
  margin-bottom: 10px;
}

.gallery-item figcaption {
  display: block;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 500;
}

/* Differentials */
.diff-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.diff-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 500;
}

.diff-card .emoji {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

/* Benefits */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.benefit-card {
  background: linear-gradient(145deg, var(--primary-light), #fff);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}

.benefit-card strong {
  display: block;
  margin-bottom: 6px;
  color: var(--primary-dark);
}

/* Pricing */
.pricing-card {
  max-width: 480px;
  margin: 0 auto;
  background: var(--surface);
  border: 2px solid var(--primary);
  border-radius: 20px;
  padding: 40px;
  text-align: center;
  box-shadow: var(--shadow);
}

.pricing-card h3 {
  margin: 0 0 8px;
  font-size: 1.5rem;
  color: var(--primary-dark);
}

.pricing-card .price {
  margin: 24px 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
}

.pricing-card ul {
  text-align: left;
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
}

.pricing-card li {
  padding: 6px 0 6px 24px;
  position: relative;
  font-size: 0.92rem;
}

.pricing-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

/* FAQ */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 10px;
  background: var(--surface);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  background: none;
  border: none;
  font: inherit;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  color: var(--text);
}

.faq-question::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--primary);
  flex-shrink: 0;
}

.faq-item.open .faq-question::after {
  content: '−';
}

.faq-answer {
  display: none;
  padding: 0 20px 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.faq-item.open .faq-answer {
  display: block;
}

/* CTA */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  text-align: center;
}

.cta-section .section-title,
.cta-section .section-lead {
  color: #fff;
}

.cta-section .section-lead {
  opacity: 0.9;
}

/* Footer */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer-brand p {
  margin: 0;
  font-size: 0.9rem;
  max-width: 280px;
}

.footer-col h4 {
  margin: 0 0 12px;
  color: #fff;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.footer-col a {
  display: block;
  padding: 4px 0;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  font-size: 0.8rem;
  text-align: center;
  color: rgba(255, 255, 255, 0.45);
}

/* Responsive */
@media (max-width: 960px) {
  .hero-grid,
  .blocks-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
  }

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

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

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

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

@media (max-width: 720px) {
  .menu-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: 64px 16px auto;
    flex-direction: column;
    align-items: stretch;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 16px;
    box-shadow: var(--shadow);
    display: none;
  }

  .site-nav.open {
    display: flex;
  }

  .header-cta .btn-outline {
    display: none;
  }

  .section {
    padding: 56px 0;
  }

  .diff-grid,
  .benefits-grid,
  .gallery-grid {
    grid-template-columns: 1fr;
  }

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