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.stairs{position:absolute;inset:14px 12px 12px;display:flex;align-items:flex-end;gap:4px}.ladder-art .stairs i{flex:1;height:calc(var(--h) * 14%);border-radius:5px 5px 2px 2px;font:600 11px system-ui,-apple-system,sans-serif;font-style:normal;display:flex;justify-content:center;padding-top:3px;color:#fff;background:rgba(255,255,255,calc(.12 + var(--h) * .045))}.start-art.ladder-art .stairs,.res-art.ladder-art .stairs{inset:8px 7px 7px;gap:2px}.start-art.ladder-art .stairs i,.res-art.ladder-art .stairs i{font-size:0;padding:0}.ch-art{position:relative;display:block;overflow:hidden}.ch-art-levels{background:linear-gradient(150deg,#1f5e5b,#2f8f6f 55%,#c7d36a)}.ch-art-levels .tiles{position:absolute;inset:14px;display:grid;grid-template-columns:repeat(3,1fr);gap:5px}.ch-art-levels .tiles i{border-radius:7px;display:grid;place-items:center;font:600 15px system-ui,-apple-system,sans-serif;font-style:normal;color:#fff;background:rgba(255,255,255,calc(.08 + var(--h) * .045))}.ch-art-levels 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.lc-bar{width:116px;height:auto;display:block}.laddercard .lc-rungs{flex-wrap:wrap}.laddercard[data-challenge=levels] .lc-rungs i{width:24px}.laddercard[data-challenge=levels] .lc-now span{font-size:24px}.item.learn{width:100%;min-height:64px;margin-top:8px;color:inherit;font:inherit}.item.learn .name{flex:1;font-size:17px}.learn-bar{display:block;height:4px;margin-top:6px;border-radius:2px;background:#20262f1f;overflow:hidden}:root[data-theme=dark] .learn-bar{background:#f4eedf24}.learn-bar i{display:block;height:100%;background:#59cc6e}.learn-go{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;flex:none;background:var(--chip-on);color:var(--chip-on-text)}.learn-go svg{width:15px;height:15px;fill:currentColor;margin-left:2px}.learn-toggle{display:block;margin:4px auto 0;padding:10px 12px;border:0;background:none;color:var(--muted);font:14px system-ui,-apple-system,sans-serif;cursor:pointer}.res-rungs{margin:10px 0 2px}.home-panel h2.locked{display:flex;align-items:center;gap:6px}.home-panel h2.locked svg,.item .lock svg,.item .cp-flag svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.item.locked{opacity:.5;cursor:default;color:inherit}.item .lock{flex:none;display:grid;place-items:center;width:30px;height:30px;color:var(--muted)}.item.checkpoint .go{flex:none;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--chip-on);color:var(--chip-on-text)}.item.checkpoint .go svg{width:13px;height:13px;fill:currentColor;stroke:none;margin-left:2px}.item.checkpoint{color:inherit;font:inherit;min-height:60px;justify-content:flex-start;background:linear-gradient(120deg,#ffc23033,#ffc2300f 60%),var(--chip);box-shadow:inset 0 0 0 1.5px #ffc230bf}.item.checkpoint .name{flex:1}.item.checkpoint .cp-flag{flex:none;width:32px;height:32px;border-radius:10px;display:grid;place-items:center;background:var(--gold);color:#3a2400}.item.checkpoint .cp-flag svg{width:18px;height:18px}.item.checkpoint.waiting{opacity:.6;cursor:default;box-shadow:inset 0 0 0 1.5px #ffc23059}.item.checkpoint.exam{box-shadow:inset 0 0 0 1.5px #ffc230bf,0 0 0 0 transparent;background:repeating-linear-gradient(135deg,rgba(255,194,48,.1) 0 10px,transparent 10px 20px),var(--chip)}.cp-quiz{position:fixed;inset:0;z-index:3;display:flex;flex-direction:column;gap:12px;overflow-y:auto;padding:calc(env(safe-area-inset-top) + 12px) 16px calc(env(safe-area-inset-bottom) + 16px);background:var(--sheet);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}.cpq-top{display:flex;align-items:center;gap:12px}.cpq-title{flex:1;display:flex;flex-direction:column;min-width:0}.cpq-title b{font-size:22px;font-weight:400;line-height:1.15}.cpq-title span{font:13px system-ui,-apple-system,sans-serif;color:var(--muted)}.cpq-pips{display:flex;gap:6px}.cpq-pips i{width:12px;height:12px;border-radius:50%;background:var(--chip);box-shadow:inset 0 0 0 1.5px var(--muted)}.cpq-pips i.right{background:var(--accent);box-shadow:none}.cpq-pips i.wrong{background:#ff5d6c;box-shadow:none}.cpq-status{margin:6px 0 0;min-height:1.4em;text-align:center;font-size:17px;color:var(--text)}.cp-quiz.is-playing .cpq-status{animation:cpq-listen 1.1s ease-in-out infinite}.cpq-cards{display:grid;gap:12px;width:100%;max-width:460px;margin:0 auto}.cpq-card{display:flex;align-items:center;gap:10px;padding:10px 12px 10px 10px;border-radius:20px;border:3px solid transparent;background:#f4eedf;color:#292b29;box-shadow:0 8px 22px #141a2438;cursor:pointer;transition:transform .15s,opacity .25s,border-color .2s,box-shadow .2s}.cpq-card:active:not(:disabled){transform:scale(.98)}.cpq-card:disabled{cursor:default;color:#292b29}.cpq-card canvas{flex:1;min-width:0;width:100%;height:auto;display:block}.cpq-letter{flex:none;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:#292b29;color:#f4eedf;font-size:17px}.cpq-card.right{border-color:var(--accent);animation:cpq-flash .7s ease-out}.cpq-card.right .cpq-letter,.cpq-card.correct .cpq-letter{background:var(--accent);color:#12301a}.cpq-card.wrong{opacity:.42;border-color:#ff5d6c}.cpq-card.correct{border-color:var(--accent);box-shadow:0 0 0 4px #59cc6e59,0 8px 22px #141a2438}.cpq-card.playing{opacity:1;transform:scale(1.03);box-shadow:0 0 0 4px var(--gold),0 10px 26px #141a244d}.cpq-actions{display:grid;gap:8px;width:100%;max-width:460px;margin:auto auto 0}.cpq-again:disabled{opacity:.45;cursor:default}@keyframes cpq-flash{0%{box-shadow:0 0 #59cc6ee6;background:#c9f2d1}to{box-shadow:0 0 0 14px #59cc6e00;background:#f4eedf}}@keyframes cpq-listen{50%{opacity:.55}}@media (prefers-reduced-motion: reduce){.cpq-card,.cpq-card.right,.cp-quiz.is-playing .cpq-status{animation:none;transition:none}.cpq-card.playing{transform:none}}.cp-parts{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:14px 0 4px}.cp-part{display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 8px;border-radius:16px;background:var(--chip)}.cp-part>span{font:12px system-ui,-apple-system,sans-serif;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.cp-part>b{font-size:24px;font-weight:400;font-variant-numeric:tabular-nums}.cp-marks{display:flex;gap:6px}.cp-marks i{font-style:normal;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:16px}.cp-marks i.right{background:var(--accent);color:#12301a}.cp-marks i.wrong{background:#ff5d6c;color:#fff}#result p.cp-formula{font-size:12.5px}#result .res-score .record.miss{background:var(--chip);color:var(--text)}