:root {
  --canvas: #F7F6F3;
  --card: #FFFFFF;
  --text: #0E0E10;
  --text-secondary: #6B6B70;
  --text-tertiary: #9A9AA0;
  --accent: #2E7D6B;
  --divider: #EDEBE6;
  --lavender: #B49EE8;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--canvas);
  color: var(--text);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 32px 24px 96px; }
header.site {
  display: flex; align-items: center; gap: 12px;
  padding: 20px 24px; max-width: 760px; margin: 0 auto;
}
.logo {
  width: 40px; height: 40px; border-radius: 11px;
  background: #0B0B0C; display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.logo span { display:block; width: 3px; height: 20px; background: #C6F24E; border-radius: 2px; }
.brand { font-weight: 700; font-size: 20px; letter-spacing: -0.01em; }
.brand small { display:block; font-weight: 400; font-size: 12px; color: var(--text-secondary); letter-spacing: 0; }
h1 { font-size: 34px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 8px; line-height: 1.15; }
.updated { color: var(--text-tertiary); font-size: 14px; margin-bottom: 32px; }
h2 {
  font-size: 20px; font-weight: 600; margin: 36px 0 12px;
  letter-spacing: -0.01em; scroll-margin-top: 20px;
}
h3 { font-size: 16px; font-weight: 600; margin: 20px 0 8px; }
p { margin-bottom: 14px; color: #2a2a2e; }
ul { margin: 0 0 16px 22px; }
li { margin-bottom: 8px; color: #2a2a2e; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
strong { color: var(--text); }
.card {
  background: var(--card); border-radius: 20px; padding: 24px 28px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.05); margin-bottom: 24px;
}
.callout {
  background: rgba(180,158,232,0.12); border-left: 3px solid var(--lavender);
  border-radius: 12px; padding: 16px 20px; margin: 20px 0; font-size: 15px;
}
.callout strong { color: var(--accent); }
.toc { background: var(--card); border-radius: 16px; padding: 18px 24px; margin-bottom: 32px; box-shadow: 0 8px 24px rgba(0,0,0,0.04); }
.toc h2 { font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-tertiary); margin: 0 0 10px; }
.toc ol { margin-left: 20px; font-size: 15px; }
.toc li { margin-bottom: 4px; }
.placeholder { background: #FFF3D6; border-radius: 4px; padding: 0 4px; font-weight: 600; }
footer.site {
  border-top: 1px solid var(--divider); padding: 28px 24px;
  max-width: 760px; margin: 0 auto; color: var(--text-tertiary); font-size: 14px;
  display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center;
}
footer.site a { color: var(--text-secondary); }
.disclaimer {
  background: #FBEAE6; border-left: 3px solid #D5533D; border-radius: 12px;
  padding: 16px 20px; margin: 24px 0; font-size: 15px;
}
@media (max-width: 520px) {
  h1 { font-size: 28px; }
  .wrap { padding: 24px 18px 72px; }
  .card { padding: 20px; }
}