@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Noto+Sans+KR:wght@300;400;500;600;700;800;900&display=swap";:root{--bg-primary:#0a0a0f;--bg-secondary:#12121a;--bg-tertiary:#1a1a2e;--bg-card:#16162a;--bg-card-hover:#1e1e38;--bg-glass:#16162ab3;--accent-primary:#6c5ce7;--accent-secondary:#a29bfe;--accent-gradient:linear-gradient(135deg, #6c5ce7 0%, #a29bfe 50%, #74b9ff 100%);--accent-gradient-warm:linear-gradient(135deg, #fd79a8 0%, #fdcb6e 100%);--accent-gradient-cool:linear-gradient(135deg, #0984e3 0%, #6c5ce7 100%);--accent-gradient-mint:linear-gradient(135deg, #00b894 0%, #55efc4 100%);--text-primary:#e8e8f0;--text-secondary:#a0a0b8;--text-muted:#6c6c88;--text-accent:#a29bfe;--border-subtle:#6c5ce726;--border-accent:#6c5ce74d;--success:#00b894;--warning:#fdcb6e;--error:#e17055;--info:#74b9ff;--shadow-sm:0 2px 8px #0000004d;--shadow-md:0 4px 16px #0006;--shadow-lg:0 8px 32px #00000080;--shadow-glow:0 0 20px #6c5ce74d;--shadow-glow-strong:0 0 40px #6c5ce766;--space-xs:4px;--space-sm:8px;--space-md:16px;--space-lg:24px;--space-xl:32px;--space-2xl:48px;--space-3xl:64px;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--radius-full:9999px;--transition-fast:.15s ease;--transition-normal:.25s ease;--transition-slow:.4s cubic-bezier(.4, 0, .2, 1);--font-sans:"Inter", "Noto Sans KR", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono:"JetBrains Mono", "Fira Code", monospace}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;font-size:16px}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;line-height:1.6;overflow-x:hidden}#root{flex-direction:column;min-height:100vh;display:flex}a{color:var(--accent-secondary);transition:color var(--transition-fast);text-decoration:none}a:hover{color:var(--accent-primary)}img{max-width:100%;display:block}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--accent-primary);border-radius:var(--radius-full)}.container{max-width:960px;padding:0 var(--space-md);margin:0 auto}.card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:var(--space-lg);transition:all var(--transition-normal)}.card:hover{border-color:var(--border-accent);box-shadow:var(--shadow-glow);transform:translateY(-2px)}.card-glass{background:var(--bg-glass);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:var(--space-lg)}.btn{justify-content:center;align-items:center;gap:var(--space-sm);border-radius:var(--radius-md);font-family:var(--font-sans);cursor:pointer;transition:all var(--transition-normal);white-space:nowrap;border:none;padding:12px 24px;font-size:.95rem;font-weight:600;text-decoration:none;display:inline-flex}.btn:active{transform:scale(.97)}.btn-primary{background:var(--accent-gradient);color:#fff;box-shadow:var(--shadow-glow)}.btn-primary:hover{box-shadow:var(--shadow-glow-strong);transform:translateY(-2px)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-accent)}.btn-secondary:hover{background:var(--bg-card-hover);border-color:var(--accent-primary)}.btn-ghost{color:var(--text-secondary);background:0 0}.btn-ghost:hover{background:var(--bg-tertiary);color:var(--text-primary)}.btn-sm{padding:8px 16px;font-size:.85rem}.btn-lg{padding:16px 32px;font-size:1.1rem}.btn-icon{border-radius:var(--radius-md);width:40px;height:40px;padding:0}.tag{align-items:center;gap:var(--space-xs);border-radius:var(--radius-full);padding:4px 12px;font-size:.8rem;font-weight:600;display:inline-flex}.tag-purple{color:var(--accent-secondary);background:#6c5ce733}.tag-green{color:var(--success);background:#00b89433}.tag-yellow{color:var(--warning);background:#fdcb6e33}.tag-red{color:var(--error);background:#e1705533}.tag-blue{color:var(--info);background:#74b9ff33}.heading-xl{letter-spacing:-.02em;font-size:2.5rem;font-weight:800;line-height:1.2}.heading-lg{letter-spacing:-.01em;font-size:1.75rem;font-weight:700;line-height:1.3}.heading-md{font-size:1.25rem;font-weight:600;line-height:1.4}.heading-sm{font-size:1rem;font-weight:600;line-height:1.5}.text-gradient{background:var(--accent-gradient);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.8;transform:scale(1.1)}}@keyframes glow{0%,to{box-shadow:0 0 20px #6c5ce74d}50%{box-shadow:0 0 40px #6c5ce780}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes spin{to{transform:rotate(360deg)}}.animate-fade-in{animation:.4s forwards fadeIn}.animate-fade-in-up{animation:.5s forwards fadeInUp}.animate-slide-right{animation:.4s forwards slideInRight}.spinner{border:3px solid var(--border-subtle);border-top-color:var(--accent-primary);border-radius:50%;width:40px;height:40px;animation:.8s linear infinite spin}.spinner-sm{border-width:2px;width:20px;height:20px}.skeleton{background:linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-card-hover) 50%, var(--bg-tertiary) 75%);border-radius:var(--radius-md);background-size:200% 100%;animation:1.5s infinite shimmer}.empty-state{text-align:center;padding:var(--space-3xl) var(--space-lg);color:var(--text-muted)}.empty-state svg{margin:0 auto var(--space-md);opacity:.4}.page{padding:var(--space-lg) 0;flex:1;padding-bottom:100px;animation:.3s fadeIn}.page-header{margin-bottom:var(--space-xl)}.page-title{margin-bottom:var(--space-xs);font-size:1.5rem;font-weight:700}.page-subtitle{color:var(--text-secondary);font-size:.9rem}.katex-display{padding:var(--space-sm) 0;overflow:auto hidden;margin:var(--space-md) 0!important}.katex{color:var(--text-primary)!important;font-size:1.1em!important}.math-block{background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:var(--space-md);margin:var(--space-sm) 0;overflow-x:auto}.divider{background:var(--border-subtle);height:1px;margin:var(--space-lg) 0}@media 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#00000080}.analysis-section{margin-bottom:var(--space-xl);opacity:0;animation:.5s forwards fadeInUp}.section-title{margin-bottom:var(--space-md);justify-content:space-between;align-items:center;gap:var(--space-sm);font-size:1.1rem;font-weight:600;display:flex}.section-content{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:var(--space-lg)}.section-desc{color:var(--text-secondary);margin-bottom:var(--space-md);font-size:.85rem}.conditions-list{gap:var(--space-md);flex-direction:column;display:flex}.condition-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:var(--space-md);transition:all 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ease-in-out;position:relative;overflow:hidden}.ladder-goal.ready{cursor:pointer;border:2px solid #fdcb6e99;animation:2s infinite pulseGoal}.ladder-goal.ready:hover{background:#fdcb6e1a;box-shadow:0 0 15px #fdcb6e4d}.ladder-goal.ready .ladder-goal-icon{opacity:.8;filter:grayscale(.5)}@keyframes pulseGoal{0%{box-shadow:0 0 #fdcb6e66}70%{box-shadow:0 0 0 10px #fdcb6e00}to{box-shadow:0 0 #fdcb6e00}}.ladder-goal.unlocked{border:2px solid var(--warning);background:#fdcb6e0d;animation:none;box-shadow:0 0 20px #fdcb6e33}.ladder-goal-icon{margin-bottom:var(--space-sm);filter:grayscale();opacity:.5;font-size:2.5rem;transition:all .5s}.ladder-goal.unlocked .ladder-goal-icon{filter:grayscale(0);opacity:1;transform:scale(1.2)}.ladder-logi{z-index:10;width:38px;height:38px;transition:bottom .6s cubic-bezier(.34,1.56,.64,1);position:absolute;left:12px}.ladder-logi img{border-radius:50%;width:100%;height:100%;box-shadow:0 4px 15px #fdcb6e66}.ladder-speech-bubble{color:#1a202c;white-space:pre-line;text-align:center;opacity:0;pointer-events:none;background:#fff;border-radius:12px;padding:6px 12px;font-size:.75rem;font-weight:800;line-height:1.3;animation:2s infinite floatBounce,.4s .6s forwards fadeIn;position:absolute;bottom:45px;left:50%;transform:translate(-50%);box-shadow:0 4px 15px #0000004d}.ladder-speech-bubble:after{content:"";border:6px solid #0000;border-top-color:#fff;margin-left:-6px;position:absolute;top:100%;left:50%}@keyframes floatBounce{0%,to{transform:translate(-50%)}50%{transform:translate(-50%,-4px)}}@media (width<=480px){.hints-list.ladder-mode{padding-left:65px}.ladder-track-bg,.ladder-track-fill{left:20px}.ladder-logi{left:4px}.ladder-speech-bubble{padding:4px 8px;font-size:.7rem}}.solution-content{background:var(--bg-card);border:1px solid 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