:root {
  --sky: #3A96E2; --violet: #8048C8; --teal: #00A896;
  --ink: #1d2433; --muted: #5b6475; --line: #e6e9f0; --bg: #ffffff; --soft: #f5f7fb;
  --brand: linear-gradient(120deg, #3A96E2 0%, #8048C8 100%);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
a { color: #2f6fb8; }
a:hover { color: var(--violet); }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 20px; }
header.site { border-bottom: 1px solid var(--line); background: #fff; }
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; font-weight: 800; font-size: 20px; color: var(--ink); text-decoration: none; }
.mark { width: 30px; height: 30px; border-radius: 9px; background: var(--brand); display: inline-block; position: relative; }
.mark::after { content: ""; position: absolute; inset: 9px 7px 7px 9px; border-radius: 50% 50% 50% 0; background: #fff; opacity: .9; transform: rotate(-45deg); }
nav.top { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 15px; }
nav.top a { color: var(--muted); text-decoration: none; }
nav.top a:hover, nav.top a[aria-current] { color: var(--ink); }
.hero { background: var(--brand); color: #fff; padding: 64px 0 72px; }
.hero h1 { font-size: clamp(40px, 7vw, 60px); line-height: 1.05; margin: 0 0 10px; letter-spacing: -1px; }
.hero p.tag { font-size: clamp(18px, 2.6vw, 22px); margin: 0 0 24px; opacity: .95; }
.soon { display: inline-block; background: rgba(255,255,255,.18); border: 1px solid rgba(255,255,255,.35);
  padding: 8px 16px; border-radius: 999px; font-weight: 600; font-size: 15px; }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: -36px 0 40px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 22px; box-shadow: 0 8px 24px rgba(29,36,51,.06); }
.card h2 { font-size: 18px; margin: 10px 0 6px; }
.card p { margin: 0; color: var(--muted); font-size: 15.5px; }
.dot { width: 38px; height: 38px; border-radius: 12px; background: rgba(0,168,150,.12); display: grid; place-items: center; color: var(--teal); font-weight: 800; }
@media (max-width: 760px) { .features { grid-template-columns: 1fr; } }
main.doc { padding-top: 36px; padding-bottom: 48px; }   /* side padding comes from .wrap */
main.doc h1 { font-size: clamp(30px, 5vw, 40px); line-height: 1.15; margin: 0 0 6px; }
.updated { color: var(--muted); font-size: 15px; margin: 0 0 28px; }
main.doc h2 { font-size: 21px; margin: 30px 0 8px; padding-top: 6px; }
main.doc h2::before { content: ""; display: block; width: 36px; height: 3px; border-radius: 2px; background: var(--teal); margin-bottom: 10px; }
main.doc ul { padding-left: 22px; }
main.doc li { margin: 6px 0; }
.note { background: var(--soft); border-left: 4px solid var(--teal); padding: 14px 16px; border-radius: 8px; }
.links { margin: 8px 0 48px; }
.links a { display: inline-block; margin: 4px 14px 4px 0; }
footer.site { border-top: 1px solid var(--line); background: var(--soft); color: var(--muted); font-size: 14.5px; padding: 26px 0 34px; }
footer.site nav { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-bottom: 10px; }
footer.site a { color: var(--muted); }