:root {
  color-scheme: light;
  --bg: #F4F2EC;
  --surface: rgba(250, 249, 245, .86);
  --surface-opaque: #FAF9F5;
  --text: #141413;
  --muted: #6B6659;
  --line: rgba(20, 20, 19, .14);
  --accent: #C15F3C;
  --accent-text: #A94F30;
  --accent-glow: rgba(193, 95, 60, .14);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #14130F;
    --surface: rgba(28, 26, 21, .84);
    --surface-opaque: #1C1A15;
    --text: #EDE9DF;
    --muted: rgba(237, 233, 223, .62);
    --line: rgba(237, 233, 223, .14);
    --accent-text: #D97757;
    --accent-glow: rgba(193, 95, 60, .16);
  }
}

:root[data-jt-theme="light"] {
  color-scheme: light;
  --bg: #F4F2EC;
  --surface: rgba(250, 249, 245, .86);
  --surface-opaque: #FAF9F5;
  --text: #141413;
  --muted: #6B6659;
  --line: rgba(20, 20, 19, .14);
  --accent-text: #A94F30;
  --accent-glow: rgba(193, 95, 60, .14);
}

:root[data-jt-theme="dark"] {
  color-scheme: dark;
  --bg: #14130F;
  --surface: rgba(28, 26, 21, .84);
  --surface-opaque: #1C1A15;
  --text: #EDE9DF;
  --muted: rgba(237, 233, 223, .62);
  --line: rgba(237, 233, 223, .14);
  --accent-text: #D97757;
  --accent-glow: rgba(193, 95, 60, .16);
}

* {
  box-sizing: border-box;
  scrollbar-color: color-mix(in srgb, var(--text) 30%, transparent) transparent;
  scrollbar-width: thin;
}

::selection { background: color-mix(in srgb, var(--accent) 20%, transparent); }
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  border: 3px solid transparent;
  border-radius: 9px;
  background: color-mix(in srgb, var(--text) 30%, transparent);
  background-clip: padding-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at 10% -10%, var(--accent-glow), transparent 34%), var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif;
  -webkit-font-smoothing: antialiased;
}

main {
  width: min(760px, calc(100% - 32px));
  margin: 32px auto 72px;
  padding: clamp(24px, 5vw, 52px);
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .08);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

@media (prefers-reduced-transparency: reduce) {
  main {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    background: var(--surface-opaque) !important;
  }
}

a { color: var(--accent-text); }
a:focus { outline: none; }
a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 72%, var(--bg) 10%);
  outline-offset: 3px;
  border-radius: 4px;
}

.back { text-decoration: none; font-weight: 700; }
.eyebrow { margin: 32px 0 4px; color: var(--accent-text); font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 0 0 8px; font-size: clamp(28px, 6vw, 42px); letter-spacing: -.04em; }
h2 { margin: 32px 0 10px; font-size: 19px; }
p, li, dd { font-size: 14px; line-height: 1.85; color: var(--muted); }
ul { padding-left: 1.25em; }
dt { margin-top: 14px; font-weight: 750; }
dd { margin: 3px 0 0; }
.updated { font-size: 12px; }
.notice { padding: 14px 16px; border-radius: 14px; background: rgba(193, 95, 60, .09); color: var(--text); }
footer { margin-top: 40px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); }