:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --surface: #ffffff;
  --text: #18212f;
  --muted: #5d6878;
  --line: #d9e0ea;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --ink: #0f172a;
  --success: #12805c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a {
  color: inherit;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 4vw, 64px);
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  font-weight: 800;
  text-decoration: none;
  color: var(--ink);
}

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

nav a {
  text-decoration: none;
}

main {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
  padding: clamp(56px, 9vw, 104px) 0 48px;
}

.hero h1 {
  margin: 0 0 18px;
  max-width: 760px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 0.98;
  letter-spacing: 0;
}

.hero p {
  margin: 0;
  max-width: 640px;
  font-size: clamp(18px, 2vw, 22px);
  color: var(--muted);
}

.hero .model-note {
  margin-top: 12px;
  color: var(--success);
  font-size: 15px;
  font-weight: 800;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.actions.compact {
  margin-top: 18px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid transparent;
}

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

.button.primary:hover {
  background: var(--accent-dark);
}

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

.hero-media {
  margin: 0;
}

.hero-media img,
.proof img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 44px rgba(16, 24, 40, 0.12);
}

figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}

.band,
.split {
  margin: 30px 0;
  padding: clamp(28px, 5vw, 48px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.band h2,
.split h2,
.article h1,
.article h2 {
  margin-top: 0;
  letter-spacing: 0;
}

.answer p {
  max-width: 900px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.tile {
  display: block;
  min-height: 190px;
  padding: 22px;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 8px;
  text-decoration: none;
}

.tile h3 {
  margin: 0 0 10px;
}

.tile p {
  margin: 0;
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
}

.proof p {
  max-width: 820px;
}

.keyword-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.keyword-list li {
  padding: 8px 12px;
  background: #eef4ff;
  border: 1px solid #c9d9f5;
  border-radius: 8px;
  color: #1d355f;
  font-size: 14px;
  font-weight: 700;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-list details {
  padding: 16px 18px;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 800;
}

.faq-list p {
  margin: 10px 0 0;
  color: var(--muted);
}

.article {
  max-width: 860px;
  margin: 0 auto;
  padding: 56px 0;
}

.article h1 {
  font-size: clamp(38px, 6vw, 62px);
  line-height: 1.02;
}

.article .lead {
  font-size: 20px;
  color: var(--muted);
}

.callout {
  padding: 22px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 8px;
  margin: 28px 0;
}

.checklist {
  padding-left: 22px;
}

.checklist li {
  margin: 10px 0;
}

.cta-panel {
  margin: 36px 0;
  padding: 28px;
  background: var(--ink);
  color: white;
  border-radius: 8px;
}

.cta-panel p {
  color: #dbe5f5;
}

footer {
  width: min(1180px, calc(100% - 40px));
  margin: 40px auto;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 900px) {
  .site-header,
  .hero,
  .split {
    grid-template-columns: 1fr;
  }

  .site-header {
    align-items: flex-start;
    position: static;
  }

  nav {
    flex-wrap: wrap;
  }

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

@media (max-width: 620px) {
  main,
  footer {
    width: min(100% - 28px, 1180px);
  }

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

  .hero h1,
  .article h1 {
    font-size: 40px;
  }
}