:root {
  --bg: #0e1530;
  --bg2: #1a1f44;
  --panel: rgba(255, 255, 255, 0.04);
  --stroke: rgba(255, 255, 255, 0.12);
  --text: #f5f2ff;
  --muted: #a9b2dd;
  --accent: #d9f45a;
  --link: #9fd0ff;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: linear-gradient(180deg, #2a2052 0%, #1a1f44 45%, #0e1530 100%);
  background-attachment: fixed;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP",
    "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.85;
  font-size: 16px;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

header.site {
  border-bottom: 1px solid var(--stroke);
  margin-bottom: 28px;
  padding-bottom: 16px;
}

header.site .app {
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--accent);
  font-weight: 700;
  margin: 0 0 6px;
}

h1 {
  font-size: 24px;
  font-weight: 800;
  margin: 0;
  letter-spacing: 0.5px;
}

.updated {
  color: var(--muted);
  font-size: 13px;
  margin-top: 10px;
}

h2 {
  font-size: 18px;
  font-weight: 700;
  margin: 36px 0 12px;
  padding-left: 12px;
  border-left: 3px solid var(--accent);
}

h3 {
  font-size: 15px;
  font-weight: 700;
  margin: 22px 0 8px;
  color: var(--text);
}

p, li { color: var(--text); }

a { color: var(--link); }

.muted { color: var(--muted); }

ul, ol { padding-left: 22px; }
li { margin: 6px 0; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}
th, td {
  border: 1px solid var(--stroke);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
th { background: var(--panel); color: var(--muted); font-weight: 700; }

.note {
  background: var(--panel);
  border: 1px solid var(--stroke);
  border-radius: 12px;
  padding: 16px 18px;
  margin: 18px 0;
}

.contact a { font-weight: 700; }

footer.site {
  margin-top: 56px;
  padding-top: 20px;
  border-top: 1px solid var(--stroke);
  color: var(--muted);
  font-size: 13px;
}

.toc a {
  display: inline-block;
  margin: 4px 14px 4px 0;
}

.back { display: inline-block; margin-bottom: 18px; font-size: 14px; }