:root {
  --bg: #ffffff;
  --bg-soft: #f4f6fb;
  --text: #0f172a;
  --muted: #475569;
  --line: #e2e8f0;
  --accent: #2563eb;
  --accent-soft: #dbeafe;
  --hero-from: #0b1b3f;
  --hero-to: #1e3a8a;
  --hero-text: #f8fafc;
  --radius: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b1120;
    --bg-soft: #111a2e;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --line: #1e293b;
    --accent: #60a5fa;
    --accent-soft: #172554;
    --hero-from: #020617;
    --hero-to: #172554;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

header.top {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
header.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { font-weight: 800; letter-spacing: -0.02em; font-size: 1.25rem; color: var(--text); text-decoration: none; }
.brand span { color: var(--accent); }
nav a { color: var(--muted); text-decoration: none; margin-left: 20px; font-size: .95rem; }
nav a:hover { color: var(--text); }
@media (max-width: 640px) { nav a:not(.cta-link) { display: none; } }

.hero {
  background: linear-gradient(135deg, var(--hero-from), var(--hero-to));
  color: var(--hero-text);
  padding: 96px 0 80px;
}
.hero h1 { font-size: clamp(2rem, 5vw, 3.4rem); line-height: 1.1; margin: 0 0 18px; letter-spacing: -0.03em; }
.hero p.lead { font-size: 1.15rem; max-width: 640px; opacity: .9; margin: 0 0 32px; }
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 10px; font-weight: 600;
  text-decoration: none; min-height: 44px;
}
.btn.primary { background: #3b82f6; color: #fff; }
.btn.primary:hover { background: #2563eb; }
.btn.ghost { color: var(--hero-text); border: 1px solid rgba(255,255,255,.35); margin-left: 10px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 36px; }
.chips span { font-size: .85rem; padding: 4px 12px; border-radius: 999px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18); }

section { padding: 80px 0; }
section.soft { background: var(--bg-soft); }
h2 { font-size: 1.9rem; letter-spacing: -0.02em; margin: 0 0 8px; }
.sub { color: var(--muted); margin: 0 0 40px; max-width: 680px; }

.grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px;
}
.card .icon {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); margin-bottom: 14px;
}
.card h3 { margin: 0 0 8px; font-size: 1.15rem; }
.card p { margin: 0 0 12px; color: var(--muted); }
.card ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: .95rem; }

.steps { counter-reset: s; display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.steps div { border-left: 3px solid var(--accent); padding: 4px 0 4px 16px; }
.steps div::before { counter-increment: s; content: "0" counter(s); font-weight: 800; color: var(--accent); display: block; }
.steps h3 { margin: 4px 0; font-size: 1.05rem; }
.steps p { margin: 0; color: var(--muted); font-size: .95rem; }

.case { display: grid; gap: 24px; grid-template-columns: 1fr 1fr; align-items: start; }
@media (max-width: 760px) { .case { grid-template-columns: 1fr; } }
.case ul { color: var(--muted); }

.contact { text-align: center; }
.contact .btn.primary { margin-top: 12px; }

footer { border-top: 1px solid var(--line); padding: 28px 0; color: var(--muted); font-size: .9rem; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
footer a { color: var(--muted); }

.prose { max-width: 760px; padding: 60px 20px; margin: 0 auto; }
.prose h1 { letter-spacing: -0.02em; }
.prose h2 { font-size: 1.3rem; margin-top: 32px; }
.prose p, .prose li { color: var(--muted); }

.center { text-align: center; margin-left: auto; margin-right: auto; }
.sub.center { margin-bottom: 8px; }