:root {
  color-scheme: light dark;
  --bg: #f5f5f7;
  --bg-elevated: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --accent: #007aff;
  --accent-soft: color-mix(in srgb, var(--accent) 12%, transparent);
  --border: color-mix(in srgb, var(--text) 8%, transparent);
  --hero-glow: radial-gradient(ellipse 80% 60% at 50% -10%, color-mix(in srgb, var(--accent) 18%, transparent), transparent);
  --max: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --bg-elevated: #1c1c1e;
    --text: #f5f5f7;
    --muted: #98989d;
    --accent: #0a84ff;
    --border: color-mix(in srgb, var(--text) 12%, transparent);
    --hero-glow: radial-gradient(ellipse 80% 60% at 50% -10%, color-mix(in srgb, var(--accent) 22%, transparent), transparent);
  }
}

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

html {
  scroll-behavior: smooth;
}

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

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

img {
  max-width: 100%;
  height: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 8px 16px;
  background: var(--accent);
  color: #fff;
  z-index: 100;
}

.skip-link:focus {
  left: 16px;
  top: 16px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--border);
}

.header-inner,
.section-inner,
.footer-inner {
  width: min(var(--max), calc(100% - 48px));
  margin-inline: auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  font-weight: 700;
  font-size: 1.05rem;
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.nav-links a:hover {
  text-decoration: underline;
}

.hero {
  background: var(--hero-glow);
  padding: 56px 0 48px;
}

.hero-grid {
  display: grid;
  gap: 32px;
  align-items: center;
}

@media (min-width: 768px) {
  .hero-grid {
    grid-template-columns: 1.2fr 1fr;
  }
}

.hero-eyebrow {
  display: inline-block;
  margin: 0 0 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 5vw, 2.75rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero-lead {
  margin: 0 0 24px;
  font-size: 1.125rem;
  color: var(--muted);
  max-width: 42ch;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 12px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
}

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

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text);
  border-color: var(--border);
}

.flow-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 24px;
  box-shadow: 0 12px 40px color-mix(in srgb, #000 6%, transparent);
}

.flow-card h2 {
  margin: 0 0 12px;
  font-size: 1rem;
}

.flow-card ol {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--muted);
}

.flow-card li + li {
  margin-top: 8px;
}

.section {
  padding: 48px 0;
}

.section h2 {
  margin: 0 0 8px;
  font-size: 1.5rem;
}

.section-intro {
  margin: 0 0 28px;
  color: var(--muted);
  max-width: 60ch;
}

.feature-grid {
  display: grid;
  gap: 16px;
}

@media (min-width: 640px) {
  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
}

.feature-card h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.link-grid {
  display: grid;
  gap: 12px;
}

@media (min-width: 640px) {
  .link-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.link-card {
  display: block;
  padding: 16px 18px;
  border-radius: 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease;
}

.link-card:hover {
  border-color: var(--accent);
}

.link-card strong {
  display: block;
  margin-bottom: 4px;
  color: var(--accent);
}

.link-card span {
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0 48px;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 32px;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

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

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