:root {
  --color-base: #0a0a0a;
  --color-body: #3d3d3d;
  --color-muted: #6f6f6f;
  --color-border: #e5e5e5;
  --color-surface: #f5f5f5;
  --color-bg: #fafafa;
  --color-white: #ffffff;
  --color-accent: #0f4c5c;
  --color-accent-light: #e6f0f2;
  --font-display: 'Sora', sans-serif;
  --font-body: 'Source Sans 3', sans-serif;
  --container-max: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.68;
  color: var(--color-base);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.nav {
  border-bottom: 1px solid var(--color-border);
  background: rgba(250, 250, 250, 0.96);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  text-decoration: none;
}

.nav-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.95rem 1.2rem;
  padding: 0;
  margin: 0;
}

.nav-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--color-muted);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current='page'] { color: var(--color-base); }

.hero {
  padding: 5rem 0 3.5rem;
  border-bottom: 1px solid var(--color-border);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.65fr);
  gap: 3rem;
  align-items: end;
}

.breadcrumb {
  color: var(--color-muted);
  font-size: 0.92rem;
  margin: 0 0 1rem;
}

.breadcrumb a { text-decoration-thickness: 1px; text-underline-offset: 3px; }

h1,
h2,
h3 {
  font-family: var(--font-display);
  line-height: 1.14;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  margin: 0;
}

h2 {
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  margin: 0 0 1rem;
}

h3 {
  font-size: 1.15rem;
  margin: 0 0 0.55rem;
}

.lead {
  color: var(--color-body);
  font-size: clamp(1.05rem, 1.5vw, 1.24rem);
  max-width: 760px;
  margin: 1.25rem 0 0;
}

.hero-note {
  border: 1px solid var(--color-border);
  background: var(--color-white);
  border-radius: 8px;
  padding: 1.1rem 1.2rem;
}

.hero-note p {
  margin: 0.4rem 0 0;
  color: var(--color-body);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.8rem;
}

.download-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.button-primary,
.button-secondary,
.download-link {
  min-height: 44px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1rem;
  font-weight: 700;
  text-decoration: none;
}

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

.button-secondary {
  border: 1px solid var(--color-border);
  background: var(--color-white);
  color: var(--color-base);
}

.download-link {
  border: 1px solid var(--color-border);
  background: var(--color-white);
  color: var(--color-accent);
}

.section {
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

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

.live-demo-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.68fr) minmax(0, 1.32fr);
  gap: 2rem;
  align-items: center;
}

.live-demo-copy p {
  color: var(--color-body);
  margin: 0;
}

.live-demo-copy p + p { margin-top: 0.85rem; }

.live-demo-frame {
  position: relative;
  min-height: 460px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-white);
  overflow: hidden;
}

.live-demo-frame iframe {
  display: block;
  width: 100%;
  height: 560px;
  border: 0;
  background: var(--color-white);
}

.live-demo-status {
  position: absolute;
  inset: auto 1rem 1rem 1rem;
  margin: 0;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--color-muted);
  padding: 0.55rem 0.75rem;
  font-size: 0.9rem;
}

.live-demo-frame[data-state='ready'] .live-demo-status {
  opacity: 0;
  pointer-events: none;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 2.25rem;
}

.text-stack > * + * { margin-top: 1rem; }

.text-stack p,
.text-stack li {
  color: var(--color-body);
}

.check-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.65rem;
}

.check-list li {
  border-left: 3px solid var(--color-accent);
  padding-left: 0.85rem;
}

.feature-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
}

.feature-table th,
.feature-table td {
  padding: 0.85rem 0.95rem;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.feature-table th {
  width: 32%;
  font-family: var(--font-display);
  font-size: 0.94rem;
  background: var(--color-surface);
}

.feature-table tr:last-child th,
.feature-table tr:last-child td { border-bottom: 0; }

.link-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.link-list a {
  border: 1px solid var(--color-border);
  background: var(--color-white);
  border-radius: 8px;
  padding: 0.9rem 1rem;
  color: var(--color-accent);
  font-weight: 700;
  text-decoration: none;
}

.faq-list {
  display: grid;
  gap: 1rem;
}

.faq-item {
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
}

.faq-item p {
  color: var(--color-body);
  margin: 0;
}

.footer {
  padding: 2rem 0;
  color: var(--color-muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer a {
  color: var(--color-base);
  font-weight: 700;
}

@media (max-width: 820px) {
  .nav-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .hero {
    padding-top: 3.5rem;
  }

  .hero-grid,
  .two-column,
  .live-demo-grid {
    grid-template-columns: 1fr;
  }

  .live-demo-frame {
    min-height: 390px;
  }

  .live-demo-frame iframe {
    height: 430px;
  }

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