:root {
  --bg: #ffffff;
  --bg-alt: #f5f7fa;
  --text: #111827;
  --muted: #4b5563;
  --line: #e5e7eb;
  --brand: #0b5fff;
  --brand-ink: #ffffff;
  --accent: #0f9d58;
  --card: #ffffff;
  --radius: 14px;
  --max: 1080px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f17;
    --bg-alt: #111827;
    --text: #f3f4f6;
    --muted: #9ca3af;
    --line: #1f2937;
    --brand: #4d8bff;
    --brand-ink: #0b0f17;
    --accent: #34d399;
    --card: #111827;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { max-width: 100%; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

header.site {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--text); font-size: 18px; }
.logo:hover { text-decoration: none; }
.logo svg { width: 28px; height: 28px; }
nav.main { display: flex; gap: 22px; font-size: 15px; }
nav.main a { color: var(--muted); }
nav.main a:hover { color: var(--text); text-decoration: none; }

.btn {
  display: inline-block; padding: 12px 20px; border-radius: 10px;
  background: var(--brand); color: var(--brand-ink); font-weight: 600; border: 1px solid var(--brand);
}
.btn:hover { text-decoration: none; filter: brightness(1.08); }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--line); }

section { padding: 72px 0; }
section.alt { background: var(--bg-alt); }
h1 { font-size: clamp(32px, 5vw, 50px); line-height: 1.12; margin: 0 0 18px; letter-spacing: -0.02em; }
h2 { font-size: clamp(26px, 3.4vw, 34px); line-height: 1.2; margin: 0 0 12px; letter-spacing: -0.01em; }
h3 { font-size: 18px; margin: 0 0 6px; }
.lead { font-size: 19px; color: var(--muted); max-width: 680px; }
.eyebrow { font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--brand); margin-bottom: 10px; }
.muted { color: var(--muted); }

.hero { padding: 88px 0 72px; }
.hero .cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.hero .note { margin-top: 16px; font-size: 14px; color: var(--muted); }

.grid { display: grid; gap: 18px; }
.grid.c3 { grid-template-columns: repeat(3, 1fr); }
.grid.c2 { grid-template-columns: repeat(2, 1fr); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card p { margin: 0; color: var(--muted); }
.step-num {
  display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 50%;
  background: var(--brand); color: var(--brand-ink); font-weight: 700; margin-bottom: 12px;
}

ul.checks { list-style: none; padding: 0; margin: 16px 0 0; }
ul.checks li { padding-left: 28px; position: relative; margin: 8px 0; }
ul.checks li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
ul.crosses li::before { content: "–"; color: var(--muted); }

.price { font-size: 40px; font-weight: 800; letter-spacing: -0.02em; }
.price small { font-size: 16px; font-weight: 500; color: var(--muted); }
.pricing { max-width: 560px; }

.roadmap .card .tag { display: inline-block; font-size: 12px; font-weight: 700; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); margin-bottom: 10px; }
.roadmap .card.now .tag { color: var(--accent); border-color: var(--accent); }

footer.site { border-top: 1px solid var(--line); padding: 32px 0; font-size: 14px; color: var(--muted); }
footer.site .wrap { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
footer.site a { color: var(--muted); }

.doc { max-width: 760px; padding: 56px 20px 72px; margin: 0 auto; }
.doc h1 { font-size: 34px; }
.doc h2 { font-size: 22px; margin-top: 32px; }

@media (max-width: 820px) {
  .grid.c3, .grid.c2 { grid-template-columns: 1fr; }
  nav.main { display: none; }
  section { padding: 56px 0; }
  .hero { padding: 64px 0 48px; }
}