:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-soft: #eef2f7;
  --text: #0f172a;
  --muted: #516074;
  --line: #d7deea;
  --accent: #0f172a;
  --accent-soft: #e7ecf5;
  --radius: 18px;
  --shadow: 0 18px 42px rgba(15, 23, 42, 0.06);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a { color: inherit; }

.shell {
  width: min(1080px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(245, 247, 251, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  text-decoration: none;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-slogan {
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-left: 0.4rem;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--muted);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.9fr);
  gap: 1.5rem;
  padding: 4rem 0 2rem;
  align-items: start;
}

.page-hero {
  grid-template-columns: 1fr;
  padding-bottom: 0.5rem;
}

.eyebrow,
.tier,
.panel-label {
  margin: 0 0 0.75rem;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
  font-weight: 700;
}

h1 { font-size: clamp(2.4rem, 5vw, 4.4rem); max-width: 11ch; }
h2 { font-size: clamp(1.8rem, 3vw, 2.8rem); max-width: 16ch; }
h3 { font-size: 1.2rem; }

.hero-lede,
.section-heading > p,
.tier-copy,
.feature-card p,
.pricing-card li,
.faq-list p,
.cta-panel p,
.hero-panel li,
.limit-list li {
  color: var(--muted);
}

.hero-lede {
  max-width: 60ch;
  margin: 1rem 0 0;
  font-size: 1.05rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 1.1rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 600;
}

.button-primary {
  background: var(--accent);
  color: #fff;
}

.button-secondary {
  background: var(--surface);
  border-color: var(--line);
}

.hero-panel,
.feature-card,
.pricing-card,
.cta-panel,
.proof-card,
.proof-note {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-panel,
.feature-card,
.pricing-card,
.cta-panel,
.proof-card,
.proof-note {
  padding: 1.25rem;
}

.plain-list,
.pricing-card ul,
.limit-list {
  margin: 0;
  padding-left: 1.1rem;
}

.section {
  padding: 3.5rem 0;
}

.section-soft {
  background: transparent;
}

.section-heading {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.feature-grid,
.pricing-grid,
.include-grid,
.proof-grid,
.walkthrough-grid {
  display: grid;
  gap: 1rem;
}

.feature-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.pricing-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
}

.proof-grid {
  grid-template-columns: 1.1fr 1.1fr 0.9fr;
  align-items: start;
  padding: 1.1rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(231, 236, 245, 0.42));
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
}

.proof-grid-showcase {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.walkthrough-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 1rem;
}

.proof-grid-compact {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.pricing-card.featured {
  border-color: #b9c5d8;
}

.price {
  margin: 0.25rem 0 0.75rem;
  font-size: 2.2rem;
  font-weight: 700;
}

.tier-copy {
  margin: 0;
}

.pricing-card ul {
  margin-top: 1rem;
}

.cta-stack {
  display: grid;
  gap: 0.65rem;
  margin-top: 1.1rem;
}

.text-link {
  font-size: 0.95rem;
  color: var(--muted);
  text-decoration: none;
}

.pricing-card li {
  margin-top: 0.5rem;
}

.include-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.include-grid div {
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  text-align: center;
  box-shadow: var(--shadow);
}

.limit-list li {
  margin-top: 0.5rem;
}

.faq-list {
  display: grid;
  gap: 0.75rem;
}

.proof-card {
  overflow: hidden;
  position: relative;
}

.proof-card img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--surface-soft);
}

.proof-grid-showcase .proof-card img {
  aspect-ratio: 4 / 5;
  object-fit: contain;
}

.proof-grid-compact .proof-card img {
  aspect-ratio: 16 / 10;
  object-fit: contain;
}

.walkthrough-card img {
  aspect-ratio: 4 / 5;
  object-fit: contain;
}

.walkthrough-notes {
  padding: 1.1rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.walkthrough-cta {
  margin-top: 1rem;
}

.walkthrough-notes li {
  color: var(--muted);
  margin-top: 0.45rem;
}

.proof-card figcaption {
  display: grid;
  gap: 0.22rem;
  margin-top: 0.85rem;
}

.proof-card figcaption strong {
  font-size: 0.98rem;
  font-weight: 700;
}

.proof-card figcaption span {
  color: var(--muted);
  font-size: 0.93rem;
}

.proof-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0 0.75rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.92);
  color: #fff;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.proof-notes {
  display: grid;
  gap: 1rem;
}

.faq-list details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem 1rem 0.95rem;
  box-shadow: var(--shadow);
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
}

.faq-list p {
  margin: 0.75rem 0 0;
}

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 2rem;
}

.footer-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.footer-brand {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}

.footer-brand strong {
  color: var(--text);
  font-size: 0.88rem;
  letter-spacing: 0.02em;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.footer-links a {
  text-decoration: none;
  color: var(--muted);
}

@media (max-width: 900px) {
  .hero,
  .feature-grid,
  .pricing-grid,
  .include-grid,
  .proof-grid,
  .walkthrough-grid,
  .proof-grid-compact {
    grid-template-columns: 1fr;
  }

  .proof-grid {
    padding: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
  }

  h1,
  h2 {
    max-width: none;
  }
}

@media (max-width: 640px) {
  .nav-shell,
  .footer-shell {
    flex-direction: column;
    align-items: flex-start;
  }

  .section {
    padding: 2.75rem 0;
  }

  .hero {
    padding-top: 3rem;
  }
}