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xp-float-up{0%{opacity:0;transform:translate(-50%,10px)scale(.8)}15%{opacity:1;transform:translate(-50%)scale(1.05)}75%{opacity:1}to{opacity:0;transform:translate(-50%,-46px)scale(1)}}.score-pop{color:var(--ios-label);font-size:30px;font-weight:800;animation:.5s cubic-bezier(.34,1.56,.64,1) score-pop;display:inline-block}@keyframes score-pop{0%{opacity:0;transform:scale(.5)}60%{transform:scale(1.12)}to{opacity:1;transform:scale(1)}}.confetti{pointer-events:none;border-radius:14px;height:140px;position:absolute;top:0;left:0;right:0;overflow:hidden}.confetti span{background:var(--c);width:8px;height:14px;animation:confetti-fall 1.6s ease-in var(--d) forwards;opacity:0;border-radius:2px;position:absolute;top:-12px;left:50%}@keyframes confetti-fall{0%{opacity:1;transform:translate(0)rotate(0)}to{opacity:0;transform:translate(var(--x), 130px) rotate(540deg)}}.explain-stage{padding:14px 16px 16px}.stage-header{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.stage-count{color:var(--ios-tertiary-label);font-size:13px;font-weight:700}.stage-dots{gap:6px;display:flex}.stage-dot{background:var(--ios-fill-2);border-radius:50%;width:8px;height:8px;transition:background-color .25s,transform .25s}.stage-dot.active{background:var(--ios-blue);transform:scale(1.3)}.stage-dot.done{background:var(--ios-green)}.stage-body{min-height:120px}.stage-tag{background:var(--ios-blue-tint);color:var(--ios-blue);margin-bottom:10px}.stage-text{color:var(--ios-secondary-label);white-space:pre-wrap;margin:8px 0 12px;font-size:16px;line-height:1.7}.stage-actions{gap:10px;margin-top:12px;display:flex}.stage-actions .btn-primary{flex:2}.stage-actions .btn-tint{flex:1}.stage-next,.stage-finish{background:linear-gradient(135deg,#58cc02,#3f9e01)}.stage-done{text-align:center;color:var(--ios-green);margin:12px 0 0;font-weight:700}.stage-slide-enter-active{animation:.28s cubic-bezier(.32,.72,0,1) stage-in}.stage-slide-leave-active{animation:.16s stage-out}@keyframes stage-in{0%{opacity:0;transform:translate(18px)}to{opacity:1;transform:none}}@keyframes stage-out{0%{opacity:1}to{opacity:0;transform:translate(-10px)}}.level-up-banner{top:calc(70px + var(--safe-top));z-index:80;color:#5b3a00;pointer-events:none;white-space:nowrap;background:linear-gradient(135deg,#ffdc5a,#ff9600);border-radius:16px;padding:12px 22px;font-size:16px;font-weight:800;position:fixed;left:50%;transform:translate(-50%);box-shadow:0 8px 24px #ff960066}.level-up-enter-active{animation:.55s cubic-bezier(.34,1.56,.64,1) levelup-pop}.level-up-leave-active{transition:opacity .25s,transform .25s}.level-up-leave-to{opacity:0;transform:translate(-50%,-20px)scale(.9)}@keyframes levelup-pop{0%{opacity:0;transform:translate(-50%,16px)scale(.7)}55%{opacity:1;transform:translate(-50%,-4px)scale(1.06)}to{opacity:1;transform:translate(-50%)scale(1)}}.level-progress{color:var(--ios-tertiary-label);align-items:center;gap:8px;margin-top:10px;font-size:12px;display:flex}.level-progress .level-track{background:var(--ios-fill-2);border-radius:4px;flex:1;height:8px;overflow:hidden}.level-progress .level-fill{background:linear-gradient(90deg,#ffdc5a,#ff9600);border-radius:4px;height:100%;transition:width .6s cubic-bezier(.32,.72,0,1)}.markdown .cs-code-block{background:#0d1117;border-radius:12px;margin:10px 0;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,Liberation Mono,monospace;position:relative;overflow:hidden}.markdown .cs-code-head{background:#161b22;border-bottom:1px solid #30363d;justify-content:space-between;align-items:center;padding:7px 12px;display:flex}.markdown .cs-code-lang{color:#8b949e;letter-spacing:.5px;text-transform:uppercase;font-size:11px}.markdown .cs-copy{color:#c9d1d9;cursor:pointer;background:#21262d;border:0;border-radius:999px;min-height:0;padding:3px 10px;font-size:11px}.markdown .cs-code-block pre{-webkit-overflow-scrolling:touch;margin:0;padding:12px 14px;overflow-x:auto}.markdown .cs-code-block code{color:#e6edf3;white-space:pre;font-family:inherit;font-size:13px;line-height:1.65;display:block}.markdown .tok-k{color:#ff7b72}.markdown .tok-s{color:#a5d6ff}.markdown .tok-c{color:#8b949e;font-style:italic}.markdown .tok-n{color:#79c0ff}.markdown .tok-a{color:#d2a8ff}.markdown .cs-inline-code{color:#0a58ca;word-break:break-all;background:#007aff17;border-radius:6px;padding:1px 6px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}html[data-theme=dark] .markdown .cs-inline-code{color:#79c0ff;background:#388bfd2e}.markdown .cs-callout{color:#1f3a5f;background:#eef5ff;border-left:3px solid #4a90d9;border-radius:0 10px 10px 0;margin:8px 0;padding:9px 12px;font-size:14px;line-height:1.6}.markdown .cs-warn{color:#6b4d10;background:#fff7e6;border-left:3px solid #f5a623;border-radius:0 10px 10px 0;margin:6px 0;padding:8px 12px;font-size:14px;line-height:1.6}html[data-theme=dark] .markdown .cs-callout{color:#b8d4f5;background:#12233a;border-left-color:#4a90d9}html[data-theme=dark] .markdown .cs-warn{color:#e8c477;background:#2b2313;border-left-color:#f5a623}.markdown .cs-list{margin:6px 0;padding-left:0;list-style:none}.markdown .cs-list li{margin:5px 0;line-height:1.6}.markdown .cs-para{margin:8px 0;line-height:1.7}.sheet-backdrop{z-index:900;background:#0000006b;align-items:flex-end;display:flex;position:fixed;inset:0}.sheet{background:var(--ios-bg);width:100%;max-height:86dvh;padding:16px 16px calc(24px + env(safe-area-inset-bottom));border-radius:20px 20px 0 0;overflow-y:auto}.sheet-title{margin:4px 0 14px;font-size:17px}.kind-seg{gap:10px;margin-bottom:6px;display:flex}.kind-seg button{border:1.5px solid var(--ios-separator);color:var(--ios-label);background:0 0;border-radius:12px;flex:1;padding:9px;font-size:14px}.kind-seg button.on{border-color:var(--ios-blue);color:var(--ios-blue);background:var(--ios-blue-tint);font-weight:600}.form-label{color:var(--ios-secondary-label);margin:12px 2px 6px;font-size:13px;display:block}.sheet select,.sheet textarea{background:var(--ios-fill);width:100%;color:var(--ios-label);border:1px solid var(--ios-separator);border-radius:12px;padding:10px 12px;font-family:inherit;font-size:15px}.sheet textarea{resize:vertical;min-height:110px}.form-error{color:var(--ios-red);margin:8px 2px 0;font-size:13px}.note-fab{right:14px;bottom:calc(104px + env(safe-area-inset-bottom));background:var(--ios-blue);color:#fff;width:46px;height:46px;box-shadow:var(--ios-shadow);z-index:90;border-radius:50%;justify-content:center;align-items:center;font-size:19px;display:flex;position:fixed}.stage-markdown{font-size:15px;line-height:1.7}.stage-markdown .cs-code-block code{font-size:12.5px}.interaction-prompt{margin:0 0 8px;font-size:15px;line-height:1.55}.interaction-prompt .cs-inline-code{font-size:.9em}