:root {
  --bg: #ffffff;
  --bg-alt: #f9fafb;
  --border: #e5e7eb;
  --text: #0f172a;
  --text-muted: #64748b;
  --accent: #6366f1;
  --accent-2: #0ea5e9;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1120;
    --bg-alt: #111827;
    --border: #1f2937;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 24px;
}
.container.narrow { max-width: 640px; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(10px);
  z-index: 10;
}
@media (prefers-color-scheme: dark) {
  .site-header { background: rgba(11, 17, 32, 0.85); }
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
}
.brand:hover { text-decoration: none; }
.brand-name { font-weight: 700; font-size: 15px; letter-spacing: -0.01em; }
.brand.small .brand-name { font-size: 13px; }

.site-nav { display: flex; gap: 22px; align-items: center; }
.site-nav a { color: var(--text-muted); font-size: 14px; }
.site-nav a:hover { color: var(--text); text-decoration: none; }
.site-nav a.nav-cta {
  background: var(--text);
  color: var(--bg);
  padding: 7px 14px;
  border-radius: 6px;
  font-weight: 600;
}
.site-nav a.nav-cta:hover { opacity: 0.9; }

.hero {
  padding: 90px 0 70px;
  text-align: center;
}
h1 {
  font-size: clamp(34px, 6vw, 54px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0 0 18px;
  font-weight: 800;
}
.grad {
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lede {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 28px;
}
.cta-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.hero-meta { font-size: 13px; color: var(--text-muted); }

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: transform 0.1s, box-shadow 0.15s;
  border: 1px solid transparent;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  color: white;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}
.btn-primary:hover { box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45); }
.btn-secondary {
  border-color: var(--border);
  color: var(--text);
  background: var(--bg);
}
.btn-secondary:hover { background: var(--bg-alt); }

.section-block { padding: 70px 0; }
.section-block.alt { background: var(--bg-alt); }
.section-block h2 {
  font-size: 30px;
  margin: 0 0 36px;
  letter-spacing: -0.02em;
  text-align: center;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}
.feature h3 { margin: 14px 0 8px; font-size: 17px; }
.feature p { margin: 0; color: var(--text-muted); font-size: 14px; line-height: 1.6; }
.feature-icon {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  display: inline-block;
}

.steps {
  list-style: none;
  padding: 0;
  margin: 0 auto;
  max-width: 640px;
}
.steps li {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
  align-items: flex-start;
}
.steps li:last-child { border-bottom: none; }
.step-num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
}

.cta-band {
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  text-align: center;
  padding: 60px 0;
}
.cta-band h2 { color: white; margin: 0 0 10px; }
.cta-band p { color: rgba(255,255,255,0.92); margin: 0 0 24px; font-size: 16px; }
.btn-on-accent {
  background: white;
  color: var(--accent);
  box-shadow: 0 6px 20px rgba(0,0,0,0.18);
}
.btn-on-accent:hover { box-shadow: 0 8px 26px rgba(0,0,0,0.26); }
.cta-band .microcopy { color: rgba(255,255,255,0.85); }

.microcopy { font-size: 13px; color: var(--text-muted); margin-top: 12px; }

.faq { max-width: 680px; margin: 0 auto; }
.faq details {
  border-bottom: 1px solid var(--border);
  padding: 18px 2px;
}
.faq details:last-child { border-bottom: none; }
.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--text-muted); font-weight: 400; font-size: 22px; line-height: 1; }
.faq details[open] summary::after { content: "\2013"; }
.faq details p { color: var(--text-muted); font-size: 14px; line-height: 1.65; margin: 12px 0 0; }

.site-footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
}
.footer-cols {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-nav { display: flex; gap: 18px; }
.footer-nav a { color: var(--text-muted); font-size: 14px; }