.hero { text-align: center; padding: 40px 16px 8px; }
.hero h1 { margin: 0; font-size: clamp(34px, 6vw, 52px); letter-spacing: 0.01em; }
.hero p { margin: 8px auto 0; max-width: 620px; color: #5d5a52; }
.hero .links { display: flex; gap: 18px; justify-content: center; margin-top: 14px; }
.hero a, .foot a { color: #8a4b12; font-weight: 600; }
.install { display: inline-block; margin: 16px auto 0; padding: 8px 16px; border-radius: 8px; background: #2b2a27; color: #f4f2ec; }

.layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 28px; max-width: 1180px; margin: 24px auto 0; padding: 0 16px; align-items: start; }
@media (max-width: 900px) { .layout { grid-template-columns: minmax(0, 1fr); } }
.stage .book { max-width: none; }

.panel { display: grid; gap: 12px; background: rgba(255, 253, 248, 0.7); border: 1px solid #d6cfbd; border-radius: 12px; padding: 14px; }
.panel fieldset { border: 0; margin: 0; padding: 0; display: grid; gap: 8px; }
.panel legend { font-weight: 700; font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; color: #8f8878; margin-bottom: 4px; }
.panel label { display: grid; grid-template-columns: 1fr auto; gap: 4px 8px; align-items: center; font-size: 14px; }
.panel label input[type="range"] { grid-column: 1 / -1; width: 100%; }
.panel select { font: inherit; }
.panel output { color: #8f8878; font-variant-numeric: tabular-nums; font-size: 13px; }
.panel .checks { grid-template-columns: 1fr 1fr; }
.panel .checks legend { grid-column: 1 / -1; }
.panel .checks label { display: flex; gap: 6px; }

.code { max-width: 1180px; margin: 32px auto 0; padding: 0 16px; }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; }
.tabs button { font: inherit; font-size: 14px; border: 1px solid #b9b3a4; border-bottom: 0; border-radius: 8px 8px 0 0; background: #f4f2ec; padding: 6px 12px; cursor: pointer; }
.tabs button[aria-selected="true"] { background: #2b2a27; color: #f4f2ec; border-color: #2b2a27; }
.tabs .copy { margin-left: auto; border-radius: 8px; border-bottom: 1px solid #b9b3a4; }
.code pre { margin: 0; background: #2b2a27; color: #f4f2ec; padding: 16px; border-radius: 0 8px 8px 8px; overflow: auto; font-size: 13px; line-height: 1.55; }
.foot { text-align: center; color: #8f8878; padding: 36px 16px 48px; }