:root {
  --bg: #ffffff;
  --bg-alt: #f5f7fb;
  --ink: #0b1220;
  --ink-soft: #4a5568;
  --line: #e3e8f0;
  --accent: #2557e8;
  --accent-ink: #ffffff;
  --card: #ffffff;
  --radius: 14px;
  --max: 1120px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --bg-alt: #111a2e;
    --ink: #e8edf6;
    --ink-soft: #a3aec2;
    --line: #22304a;
    --accent: #5b84ff;
    --card: #131d33;
  }
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 0.5em; }
h1 { font-size: clamp(2.25rem, 5.5vw, 3.75rem); max-width: 18ch; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
a { color: var(--accent); }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }
@media (max-width: 480px) { .container { padding: 0 16px; } }

.skip-link {
  position: absolute; left: -999px; top: 8px;
  background: var(--accent); color: var(--accent-ink);
  padding: 8px 14px; border-radius: 8px; z-index: 100;
}
.skip-link:focus { left: 8px; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.1rem; color: var(--ink); text-decoration: none; }
.brand-mark { width: 30px; height: 30px; color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; margin: 0; padding: 0; }
.nav-links a:not(.btn) { color: var(--ink-soft); text-decoration: none; font-weight: 500; font-size: 0.95rem; }
.nav-links a:not(.btn):hover { color: var(--ink); }
@media (max-width: 640px) {
  .nav-links li:not(:last-child) { display: none; }
}

/* Buttons */
.btn {
  display: inline-block;
  background: var(--accent); color: var(--accent-ink);
  padding: 14px 24px; border-radius: 10px;
  font-weight: 600; text-decoration: none;
  border: 1px solid var(--accent);
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 24px -8px color-mix(in srgb, var(--accent) 60%, transparent); }
.btn-small { padding: 9px 16px; font-size: 0.95rem; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { box-shadow: none; border-color: var(--ink-soft); }
.btn-light { background: #fff; color: #0b1220; border-color: #fff; overflow-wrap: anywhere; }

/* Hero */
.hero {
  padding: clamp(72px, 12vw, 140px) 0 clamp(64px, 10vw, 120px);
  background:
    radial-gradient(800px 400px at 85% -10%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 70%),
    var(--bg);
}
.eyebrow {
  text-transform: uppercase; letter-spacing: 0.12em;
  font-size: 0.8rem; font-weight: 700; color: var(--accent);
  margin-bottom: 0.75em;
}
.lead { font-size: clamp(1.1rem, 2vw, 1.3rem); color: var(--ink-soft); max-width: 60ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

/* Sections */
.section { padding: clamp(64px, 9vw, 112px) 0; }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--line); }

.cards {
  display: grid; gap: 20px; margin-top: 40px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px;
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); transform: translateY(-2px); }
.card p { color: var(--ink-soft); margin: 0; }
.icon {
  width: 40px; height: 40px; padding: 8px; margin-bottom: 18px;
  border-radius: 10px; background: color-mix(in srgb, var(--accent) 12%, transparent);
  stroke: var(--accent); stroke-width: 2; fill: none; stroke-linecap: round; stroke-linejoin: round;
}

.steps {
  list-style: none; padding: 0; margin: 40px 0 0;
  display: grid; gap: 32px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.steps li { border-top: 2px solid var(--accent); padding-top: 20px; }
.steps p { color: var(--ink-soft); margin: 0; }
.step-num { display: block; font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; margin-bottom: 8px; }

.about { display: grid; gap: 32px; grid-template-columns: 1fr; }
@media (min-width: 860px) { .about { grid-template-columns: 1fr 1.3fr; gap: 64px; } }
.about-body > p { color: var(--ink-soft); font-size: 1.125rem; }
.checks { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 12px; }
.checks li { position: relative; padding-left: 32px; }
.checks li::before {
  content: ""; position: absolute; left: 0; top: 0.3em;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5 9-10'/%3E%3C/svg%3E") center / 12px no-repeat;
}

/* CTA */
.cta { background: #0b1220; color: #fff; text-align: center; }
.cta-inner { display: flex; flex-direction: column; align-items: center; }
.cta .lead { color: #b6c0d4; margin-inline: auto; margin-bottom: 32px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 36px 0 28px; color: var(--ink-soft); font-size: 0.9rem; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; }
.site-footer address { font-style: normal; line-height: 1.7; }
.site-footer strong { color: var(--ink); }
.site-footer a { color: var(--ink-soft); }
.site-footer a:hover { color: var(--ink); }
.footer-links { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 24px; }
.footer-copy { margin-top: 24px; font-size: 0.85rem; }

/* Legal / support pages */
.page { padding: clamp(48px, 8vw, 88px) 0 clamp(64px, 9vw, 112px); }
.prose { max-width: 72ch; }
.prose h1 { font-size: clamp(2rem, 4.5vw, 2.75rem); max-width: none; }
.prose h2 { font-size: 1.4rem; margin-top: 2em; }
.prose p, .prose li { color: var(--ink-soft); }
.prose strong { color: var(--ink); }
.prose ul { padding-left: 1.25em; margin: 0 0 1em; }
.prose li { margin-bottom: 0.4em; }
.meta { font-size: 0.95rem; color: var(--ink-soft); }
.callout { background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; margin: 24px 0; }
.callout p:last-child { margin: 0; }