:root {
  --bg: #F6F8FB;
  --card: #FFFFFF;
  --border: #DCE2EB;
  --text: #1B1F24;
  --muted: #56606D;
  --accent: #2F80ED;
  --accent-strong: #1F6FD6;
  --tint: #EEF4FD;
  --max: 960px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181C;
    --card: #202329;
    --border: #363A42;
    --text: #F2F4F7;
    --muted: #AAB3BF;
    --accent: #4B95F0;
    --accent-strong: #6AA8F4;
    --tint: #1D2B3F;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, Helvetica, Arial, sans-serif;
}
a { color: var(--accent-strong); }
a:hover { text-decoration-thickness: 2px; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
header.site { border-bottom: 1px solid var(--border); background: var(--card); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; font-size: 18px; }
.brand svg { width: 40px; height: 20px; flex-shrink: 0; }
nav.site { display: flex; gap: 18px; flex-wrap: wrap; font-size: 15px; }
nav.site a { color: var(--text); text-decoration: none; }
nav.site a:hover, nav.site a[aria-current="page"] { color: var(--accent-strong); }
main { padding: 48px 0 64px; }
h1 { font-size: clamp(30px, 5vw, 44px); line-height: 1.15; margin: 0 0 16px; letter-spacing: -0.5px; }
h2 { font-size: 22px; line-height: 1.3; margin: 36px 0 10px; }
h3 { font-size: 17px; margin: 22px 0 6px; }
p, li { color: var(--text); }
.lead { font-size: 19px; color: var(--muted); max-width: 640px; margin: 0 0 28px; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 32px 0; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 22px 24px; }
.card h3 { margin-top: 0; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.notice { background: var(--tint); border: 1px solid var(--border); border-radius: 12px; padding: 16px 20px; margin: 24px 0; }
.button { display: inline-block; padding: 11px 20px; border-radius: 10px; background: var(--accent-strong); color: #FFFFFF; font-weight: 600; text-decoration: none; }
.button:hover { filter: brightness(1.08); }
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; margin: 28px 0; }
.plan { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 26px; }
.plan.pro { border: 2px solid var(--accent); }
.plan .price { font-size: 30px; font-weight: 700; margin: 6px 0 4px; }
.plan ul { padding-left: 20px; margin: 14px 0 0; }
.doc { max-width: 760px; }
.doc .updated { color: var(--muted); font-size: 14px; margin-top: -6px; }
.doc .draft { display: inline-block; font-size: 13px; padding: 2px 10px; border-radius: 999px; background: var(--tint); border: 1px solid var(--border); color: var(--muted); }
footer.site { border-top: 1px solid var(--border); padding: 24px 0 40px; font-size: 14px; color: var(--muted); }
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 8px 18px; justify-content: space-between; }
footer.site nav { display: flex; flex-wrap: wrap; gap: 8px 16px; }
footer.site a { color: var(--muted); }