/* ToneBeyond Audio Engine docs — editor-matching dark theme */
:root {
  --bg: #131419; --panel: #1b1d24; --border: #2a2d38;
  --text: #d8dae2; --dim: #8b8fa0;
  --blue: #78c8ff; --amber: #ffbe6e; --green: #6ee7a0; --red: #ff7366;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.85 -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
}
.layout { display: flex; min-height: 100vh; }
nav {
  width: 240px; flex-shrink: 0; padding: 24px 16px; background: var(--panel);
  border-right: 1px solid var(--border); position: sticky; top: 0;
  height: 100vh; overflow-y: auto;
}
nav .logo { font-weight: 700; font-size: 17px; margin-bottom: 4px; }
nav .logo span { color: var(--blue); }
nav .ver { color: var(--dim); font-size: 12px; margin-bottom: 20px; }
nav h4 { color: var(--dim); font-size: 11px; text-transform: uppercase;
  letter-spacing: .08em; margin: 18px 0 6px; }
nav a { display: block; color: var(--text); text-decoration: none;
  padding: 4px 10px; border-radius: 6px; font-size: 14px; }
nav a:hover { background: #242732; }
nav a.active { background: #243246; color: var(--blue); }
main { flex: 1; max-width: 880px; padding: 40px 48px 80px; }
h1 { font-size: 30px; line-height: 1.3; margin: 0 0 6px; }
h1 + .lead { color: var(--dim); font-size: 16px; margin-bottom: 32px; }
h2 { font-size: 21px; margin: 44px 0 12px; padding-top: 12px;
  border-top: 1px solid var(--border); }
h3 { font-size: 16px; margin: 28px 0 8px; color: var(--blue); }
a { color: var(--blue); }
code { background: #242732; padding: 1px 6px; border-radius: 4px;
  font: 13px/1.6 "SF Mono", Menlo, Consolas, monospace; }
pre { background: #0e0f13; border: 1px solid var(--border); border-radius: 10px;
  padding: 14px 18px; overflow-x: auto; }
pre code { background: none; padding: 0; color: #cfe3f5; }
table { border-collapse: collapse; width: 100%; margin: 12px 0; font-size: 14px; }
th, td { border: 1px solid var(--border); padding: 7px 12px; text-align: left;
  vertical-align: top; }
th { background: var(--panel); color: var(--dim); font-weight: 600; }
td code { white-space: nowrap; }
img.shot { width: 100%; border: 1px solid var(--border); border-radius: 10px;
  margin: 12px 0; }
.note { background: #1d2433; border-left: 3px solid var(--blue);
  border-radius: 0 8px 8px 0; padding: 10px 16px; margin: 14px 0; }
.warn { background: #2b2118; border-left: 3px solid var(--amber);
  border-radius: 0 8px 8px 0; padding: 10px 16px; margin: 14px 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px; margin: 20px 0; }
.card { background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 16px 18px; }
.card b { color: var(--blue); display: block; margin-bottom: 4px; }
.card p { margin: 0; color: var(--dim); font-size: 13.5px; line-height: 1.7; }
.pill { display: inline-block; background: #243246; color: var(--blue);
  border-radius: 99px; font-size: 12px; padding: 1px 10px; margin-right: 6px; }
footer { color: var(--dim); font-size: 12px; margin-top: 60px;
  border-top: 1px solid var(--border); padding-top: 16px; }
@media (max-width: 760px) { .layout { display: block; }
  nav { width: auto; height: auto; position: static; } main { padding: 24px; } }