:root {
  --ink: #0b1622;
  --ink-2: #13233a;
  --text: #1c2633;
  --muted: #5b6878;
  --line: #e3e8ee;
  --bg: #ffffff;
  --bg-soft: #f5f7fa;
  --accent: #1f8fbf;
  --accent-dark: #16739b;
  --radius: 14px;
  --max: 1080px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* Header */
header.site {
  position: sticky; top: 0; z-index: 10;
  background: rgba(11, 22, 34, 0.92);
  backdrop-filter: blur(8px);
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { color: #fff; font-weight: 700; font-size: 1.25rem; letter-spacing: 0.04em; white-space: nowrap; }
nav { white-space: nowrap; }
.logo:hover { color: #fff; }
.logo span { color: var(--accent); }
nav a { color: #c9d4e0; margin-left: 28px; font-size: 0.95rem; }
nav a:hover { color: #fff; }

/* Hero */
.hero {
  background: radial-gradient(1200px 500px at 80% -10%, #1d4a6b 0%, transparent 60%), var(--ink);
  color: #fff;
  padding: 112px 0 120px;
}
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); line-height: 1.1; max-width: 760px; letter-spacing: -0.02em; }
.hero p { color: #b8c5d3; font-size: 1.2rem; max-width: 620px; margin-top: 22px; }
.btn {
  display: inline-block; margin-top: 36px; padding: 14px 26px;
  background: var(--accent); color: #fff; border-radius: 999px; font-weight: 600;
}
.btn:hover { background: var(--accent-dark); color: #fff; }
.btn.ghost { background: transparent; border: 1px solid #3a5470; margin-left: 12px; }
.btn.ghost:hover { border-color: #fff; }

/* Sections */
section { padding: 96px 0; }
section.soft { background: var(--bg-soft); }
.eyebrow { text-transform: uppercase; font-size: 0.78rem; letter-spacing: 0.14em; color: var(--accent); font-weight: 700; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); letter-spacing: -0.01em; margin-top: 8px; color: var(--ink); }
.lede { color: var(--muted); max-width: 640px; margin-top: 14px; font-size: 1.08rem; }

.grid { display: grid; gap: 24px; margin-top: 48px; }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.grid.four { grid-template-columns: repeat(4, 1fr); }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 28px;
}
.card .icon {
  width: 44px; height: 44px; border-radius: 12px; background: #e6f3f9;
  display: grid; place-items: center; margin-bottom: 20px;
}
.card .icon svg { width: 22px; height: 22px; stroke: var(--accent); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.card h3 { font-size: 1.15rem; color: var(--ink); margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 0.98rem; }
.card ul { margin-top: 14px; padding-left: 18px; color: var(--muted); font-size: 0.95rem; }
.card li { margin: 4px 0; }

.step .num { font-weight: 700; color: var(--accent); font-size: 0.9rem; letter-spacing: 0.08em; }
.step h3 { margin-top: 8px; }

/* Contact */
.contact {
  background: var(--ink); color: #fff; border-radius: 20px;
  padding: 64px 56px; display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
}
.contact h2 { color: #fff; margin-top: 0; }
.contact p { color: #b8c5d3; margin-top: 10px; max-width: 520px; }
.contact .btn { margin-top: 0; }

/* Footer */
footer.site { border-top: 1px solid var(--line); padding: 36px 0; color: var(--muted); font-size: 0.9rem; }
footer.site .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
footer.site a { color: var(--muted); margin-left: 20px; }
footer.site a:hover { color: var(--ink); }

/* Legal / doc pages */
.doc { padding: 72px 0 96px; }
.doc .wrap { max-width: 760px; }
.doc h1 { font-size: 2.2rem; color: var(--ink); letter-spacing: -0.01em; }
.doc .meta { color: var(--muted); margin-top: 6px; margin-bottom: 40px; }
.doc h2 { font-size: 1.3rem; margin-top: 36px; margin-bottom: 10px; }
.doc p, .doc li { color: var(--text); margin-bottom: 12px; }
.doc ul { padding-left: 22px; }
.todo { background: #fff6d6; padding: 0 4px; border-radius: 4px; }

@media (max-width: 900px) {
  .grid.three, .grid.four { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .grid.three, .grid.four { grid-template-columns: 1fr; }
  nav a { margin-left: 16px; }
  nav a.hide-sm { display: none; }
  .logo { font-size: 1.05rem; }
  .hero { padding: 80px 0 88px; }
  .btn.ghost { margin-left: 0; margin-top: 12px; }
  .contact { padding: 44px 28px; }
  footer.site a { margin-left: 0; margin-right: 20px; }
}