button, input, select { font: inherit; color: inherit; }
.noise { position: fixed; inset: 0; opacity: .2; pointer-events: none; z-index: 10; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.08'/%3E%3C/svg%3E"); }

.kt-wrap { position: relative; z-index: 11; max-width: 1320px; margin: 0 auto; padding: 24px 20px 60px; }
.kt-hero { text-align: center; padding: 18px 0 4px; }
.kt-hero .kicker { color: var(--g-2); text-transform: uppercase; letter-spacing: 1.2px; font-size: 12px; font-weight: 700; }
.kt-hero h1 { font-size: clamp(30px, 4.6vw, 50px); line-height: 1.05; letter-spacing: -1.5px; margin: 12px 0 10px; font-weight: 600; }
.kt-hero p { color: var(--muted); font-size: 15px; max-width: 640px; margin: 0 auto; line-height: 1.5; }

/* category colors (compatible with shared tokens) */
.cat-transport { --c: #4f9dff; } .cat-marking { --c: #f5b342; } .cat-editing { --c: #ff6a5f; }
.cat-navigation { --c: #42c98e; } .cat-tools { --c: #b07cff; } .cat-timeline { --c: #3ec5d8; }
.cat-view { --c: #9aa6b6; } .cat-other { --c: #8b95a3; }

.kt-bar { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; margin-top: 14px; }
.kt-bar-group { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.kt-field { display: inline-flex; align-items: center; gap: 7px; font-size: 11px; text-transform: uppercase; letter-spacing: .5px; color: var(--g-2); font-weight: 700; }
.kt-field select { padding: 7px 9px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface-2); font-size: 13px; text-transform: none; letter-spacing: 0; font-weight: 500; }
.kt-btn { padding: 8px 13px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); cursor: pointer; font-size: 13px; font-weight: 700; }
.kt-btn:hover { border-color: var(--line-2); transform: translateY(-1px); }
.kt-btn.primary { background: var(--solid); color: #fff; border-color: var(--solid); }
.kt-modes { display: inline-flex; border: 1px solid var(--line); border-radius: 11px; overflow: hidden; background: var(--surface-2); }
.kt-mode { padding: 8px 16px; border: 0; background: transparent; cursor: pointer; font-size: 13px; font-weight: 700; color: var(--g-2); }
.kt-mode.active { background: var(--solid); color: #fff; }

.kt-guide { margin: 14px 0 0; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); overflow: hidden; }
.kt-guide > summary { cursor: pointer; padding: 12px 15px; font-weight: 700; font-size: 13px; list-style: none; }
.kt-guide > summary::-webkit-details-marker { display: none; }
.kt-guide > summary::before { content: "▸ "; color: var(--g-2); }
.kt-guide[open] > summary::before { content: "▾ "; }
.kt-guide-body { padding: 4px 16px 16px; display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.kt-guide-col h3 { font-size: 13px; margin: 6px 0 8px; }
.kt-guide-col ol { margin: 0; padding-left: 18px; color: var(--g-1, var(--ink)); font-size: 13px; line-height: 1.7; }
.kt-guide-link { display: inline-block; margin-top: 8px; font-size: 12px; color: var(--accent); text-decoration: none; font-weight: 600; }
.kt-guide-note { grid-column: 1 / -1; margin: 4px 0 0; padding: 10px 12px; border-radius: 9px; background: var(--surface-2); color: var(--g-2); font-size: 12px; line-height: 1.5; }
@media (max-width: 680px) { .kt-guide-body { grid-template-columns: 1fr; gap: 14px; } }

.kt-status { margin: 12px 0 0; padding: 10px 13px; border-radius: 10px; background: color-mix(in srgb, #42c98e 14%, var(--surface)); color: var(--ink); font-size: 13px; border: 1px solid color-mix(in srgb, #42c98e 35%, var(--line)); }
.kt-status.err { background: var(--danger-soft, color-mix(in srgb, #ff6a5f 14%, var(--surface))); border-color: color-mix(in srgb, #ff6a5f 45%, var(--line)); color: var(--danger, #ff6a5f); }

.kt-controls { display: flex; align-items: center; gap: 12px; margin: 16px 0 10px; flex-wrap: wrap; }
.kt-search { flex: 1; min-width: 180px; max-width: 360px; padding: 10px 13px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface-2); outline: 0; font-size: 14px; }
.kt-search:focus { border-color: var(--accent); }
.kt-mods { display: inline-flex; gap: 6px; }
.kt-modkey { padding: 8px 12px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface); cursor: pointer; font-size: 12px; font-weight: 700; }
.kt-modkey.on { background: var(--accent); color: #fff; border-color: var(--accent); }
.kt-compare-sel { margin-left: auto; }

.kt-reveal { min-height: 64px; margin: 6px 0 14px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); display: flex; flex-direction: column; gap: 4px; }
.kt-reveal-combo { font: 500 14px "DM Mono", monospace; color: var(--g-2); }
.kt-reveal-cmd { font-size: clamp(20px, 3vw, 30px); font-weight: 700; letter-spacing: -.5px; color: var(--c, var(--ink)); }
.kt-reveal-meta { display: flex; align-items: center; gap: 10px; margin-top: 4px; }
.kt-muted { color: var(--g-3); font-weight: 500; font-size: 15px; }
.kt-tag { font-size: 11px; text-transform: uppercase; letter-spacing: .5px; color: var(--g-2); border: 1px solid var(--line); border-radius: 7px; padding: 3px 8px; }
.kt-mini { padding: 5px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface-2); cursor: pointer; font-size: 12px; font-weight: 700; }
.kt-cmp-row { display: flex; align-items: baseline; gap: 12px; padding: 4px 0; border-bottom: 1px solid var(--line); }
.kt-cmp-row:last-child { border-bottom: 0; }
.kt-cmp-app { font-size: 11px; text-transform: uppercase; letter-spacing: .5px; color: var(--g-2); min-width: 130px; font-weight: 700; }
.kt-cmp-cmd { font-weight: 600; }
.kt-cmp-keys { font: 500 13px "DM Mono", monospace; color: var(--g-1, var(--ink)); margin-left: auto; }

/* keyboard */
.kt-board { display: flex; flex-direction: column; gap: clamp(4px, .6vw, 8px); padding: clamp(8px, 1.2vw, 16px); border: 1px solid var(--line); border-radius: 16px; background: var(--surface); outline: 0; overflow-x: auto; }
.kt-board:focus-visible { box-shadow: 0 0 0 2px var(--accent); }
.kt-row { display: flex; gap: clamp(4px, .6vw, 8px); }
.kt-key { flex: 1 1 0; min-width: 0; flex-basis: 0; height: clamp(40px, 5.4vw, 66px); border: 1px solid var(--line); border-radius: clamp(6px, .8vw, 11px); background: var(--surface-2); cursor: pointer; display: flex; flex-direction: column; align-items: flex-start; justify-content: space-between; padding: clamp(3px, .5vw, 7px); overflow: hidden; transition: transform .08s, box-shadow .12s, background .12s; }
.kt-key:hover { border-color: var(--line-2); }
.kt-key-cap { font: 600 clamp(9px, 1.05vw, 12px) "DM Mono", monospace; color: var(--g-2); flex: none; }
.kt-key-cmd { font-size: clamp(7.5px, .92vw, 11px); line-height: 1.12; font-weight: 600; color: var(--ink); width: 100%; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; align-self: stretch; }
.kt-key.inactive { opacity: .42; }
.kt-key.inactive .kt-key-cap { color: var(--g-3); }
.kt-key.bound { background: color-mix(in srgb, var(--c) 13%, var(--surface)); border-bottom: 3px solid var(--c); }
.kt-key.bound .kt-key-cap { color: var(--c); }
.kt-key.kt-key-mod { background: var(--surface); align-items: center; justify-content: center; }
.kt-key.kt-key-mod .kt-key-cap { color: var(--g-2); }
.kt-key.kt-key-mod.on { background: var(--accent); border-color: var(--accent); }
.kt-key.kt-key-mod.on .kt-key-cap { color: #fff; }
.kt-key.kt-key-dead { opacity: .5; cursor: default; align-items: center; justify-content: center; }
.kt-key.match { box-shadow: 0 0 0 2px var(--accent); border-color: var(--accent); }
.kt-key.pressed { transform: translateY(1px) scale(.97); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 60%, transparent); background: color-mix(in srgb, var(--accent) 20%, var(--surface-2)); }

.kt-legend { display: flex; flex-wrap: wrap; gap: 12px; margin: 12px 2px 0; }
.kt-leg { display: inline-flex; align-items: center; gap: 6px; font-size: 11.5px; color: var(--g-2); text-transform: uppercase; letter-spacing: .4px; font-weight: 700; }
.kt-leg i { width: 12px; height: 12px; border-radius: 4px; background: var(--c); display: inline-block; }

/* quiz */
.kt-quiz { margin-top: 18px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); padding: 16px; }
.kt-quiz-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.kt-quiz-stats { display: flex; gap: 22px; }
.kt-stat { display: flex; flex-direction: column; }
.kt-stat strong { font: 600 22px "DM Mono", monospace; }
.kt-stat small { color: var(--g-2); font-size: 11px; text-transform: uppercase; letter-spacing: .5px; }
.kt-quiz-tools { display: flex; align-items: flex-end; gap: 10px; flex-wrap: wrap; }
.kt-quiz-stage { margin-top: 16px; }
.kt-quiz-idle { color: var(--g-2); font-size: 14px; }
.kt-quiz-prompt { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; padding: 14px 0; }
.kt-q-label { font-size: 13px; color: var(--g-2); text-transform: uppercase; letter-spacing: .5px; font-weight: 700; }
.kt-q-cmd { font-size: clamp(22px, 3.4vw, 34px); font-weight: 700; letter-spacing: -.5px; }
.kt-q-prog { margin-left: auto; font: 500 13px "DM Mono", monospace; color: var(--g-3); }
.kt-quiz-choices { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin: 8px 0; }
.kt-choice { padding: 13px 14px; border: 1px solid var(--line); border-radius: 11px; background: var(--surface-2); cursor: pointer; font-size: 15px; font-weight: 600; text-align: left; }
.kt-choice:hover { border-color: var(--line-2); }
.kt-choice.right { background: color-mix(in srgb, #42c98e 22%, var(--surface)); border-color: #42c98e; }
.kt-choice.wrong { background: color-mix(in srgb, #ff6a5f 18%, var(--surface)); border-color: #ff6a5f; }
.kt-quiz-feedback { min-height: 22px; font-size: 15px; font-weight: 700; }
.kt-quiz-feedback.ok { color: #2faa6f; }
.kt-quiz-feedback.bad { color: var(--danger, #ff6a5f); }
@media (max-width: 560px) { .kt-quiz-choices { grid-template-columns: 1fr; } }

.kt-ipnote { margin-top: 22px; color: var(--g-3); font-size: 11.5px; line-height: 1.6; }

.toast { position: fixed; bottom: 25px; left: 50%; transform: translate(-50%, 30px); opacity: 0; pointer-events: none; z-index: 60; background: var(--solid); color: #fff; border-radius: 12px; padding: 12px 16px; font-size: 13px; display: flex; gap: 9px; align-items: center; transition: .3s; }
.toast span:first-child { color: var(--green, #7ddf64); }
.toast.show { transform: translate(-50%, 0); opacity: 1; }

/* cheat-sheet print */
#kt-print { display: none; }
@media print {
  html[data-warm]::after { display: none !important; }
  body > *:not(#kt-print) { display: none !important; }
  #kt-print { display: block !important; color: #000; font: 12px/1.5 "Manrope", system-ui, sans-serif; }
  #kt-print h1 { font-size: 20px; margin: 0 0 12px; }
  #kt-print h2 { font-size: 14px; margin: 16px 0 6px; border-bottom: 1px solid #ccc; padding-bottom: 3px; }
  #kt-print table { width: 100%; border-collapse: collapse; page-break-inside: auto; }
  #kt-print tr { page-break-inside: avoid; }
  #kt-print td { padding: 3px 6px; vertical-align: top; }
  #kt-print .kp-cmd { width: 70%; }
  #kt-print .kp-key { font-family: "DM Mono", monospace; color: #b1241b; white-space: nowrap; }
}