/* Keyboard tutorials use the established Codex-4 palette and typography. */
html body.keyboard-guide { background: #0a0b0d; color: #d7d9de; font-size: 16px; line-height: 1.7; }
.keyboard-guide main { max-width: 1120px; margin: auto; padding: 0 24px 64px; }
.keyboard-guide main .c4-section { margin-top: 32px; padding: 28px; }
.keyboard-guide main .guide-hero { padding: 48px 28px 28px; }
.keyboard-guide h1 { font-size: clamp(30px, 4vw, 48px); line-height: 1.12; max-width: 950px; color: #f7f7f4; font-weight: 800; margin: 20px 0; }
.keyboard-guide h2 { font-size: 26px; line-height: 1.3; color: #f7f7f4; font-weight: 750; margin: 0 0 20px; }
.keyboard-guide h3 { font-size: 20px; color: #f7f7f4; font-weight: 700; }
.keyboard-guide p { margin: 14px 0; }
.keyboard-guide main a:not(.c4-btn) { color: #ffd43b; text-decoration: underline; text-underline-offset: 4px; }
.keyboard-guide .guide-label { color: #ffd43b; font-size: 14px; letter-spacing: .1em; text-transform: uppercase; }
.keyboard-guide .guide-lead { font-size: 20px; max-width: 800px; }
.keyboard-guide .guide-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0 12px; }
.keyboard-guide .guide-disclosure { font-size: 14px; }
.keyboard-guide .key-diagram { border: 1px solid #353a44; border-radius: 16px; background: #14161a; padding: 24px; margin: 24px 0; }
.keyboard-guide .key-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 14px 0; }
.keyboard-guide kbd { display: inline-block; min-width: 48px; padding: 8px 14px; text-align: center; font: 700 18px/1.5 "Segoe UI", sans-serif; background: #252931; color: #ffd43b; border: 1px solid #626873; border-bottom: 4px solid #626873; border-radius: 8px; }
.keyboard-guide .charge-meter { height: 12px; border-radius: 8px; background: linear-gradient(to right, #ffd43b 30%, #b78f20 30%, #b78f20 65%, #61501b 65%); margin: 20px 0; }
.keyboard-guide .table-scroll { overflow-x: auto; border: 1px solid #353a44; border-radius: 12px; }
html body.c4-page.keyboard-guide main table { width: 100%; min-width: 560px; table-layout: auto; border-collapse: collapse; font-size: 16px; }
.keyboard-guide th, .keyboard-guide td { text-align: left; padding: 14px 16px; border-bottom: 1px solid #353a44; }
.keyboard-guide th { color: #ffd43b; background: #14161a; }
.keyboard-guide caption { text-align: left; padding: 16px; font-size: 14px; }
.keyboard-guide ol, .keyboard-guide ul { padding-left: 24px; }
.keyboard-guide ol { list-style: decimal; }
.keyboard-guide ul { list-style: disc; }
.keyboard-guide li { margin: 14px 0; }
.keyboard-guide .guide-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.keyboard-guide details { border-top: 1px solid #353a44; padding: 18px 0; }
.keyboard-guide summary { color: #f7f7f4; cursor: pointer; font-weight: 700; }
.keyboard-guide [data-nav-dropdown-panel] { max-height: calc(100vh - 88px); overflow-y: auto; }
.keyboard-batch3 .text-xs { font-size: 14px; }
.keyboard-batch4 .text-xs { font-size: 14px; }
.keyboard-batch5 .text-xs { font-size: 14px; }
.keyboard-batch6 .text-xs { font-size: 14px; }
@media (max-width: 640px) {
  .keyboard-guide main { padding: 0 16px 40px; }
  .keyboard-guide main .c4-section, .keyboard-guide main .guide-hero { padding: 20px 0; margin-top: 20px; }
  .keyboard-guide .guide-columns { grid-template-columns: 1fr; }
  .keyboard-guide .key-diagram { padding: 16px; }
}