:root{--primary:#646cff;--primary-hover:#535bf2;--bg-color:#f0f2f5;--text-color:#213547;--card-bg:#fff;--shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;--shadow-lg:0 10px 15px -3px #0000001a,0 4px 6px -2px #0000000d;--gradient-ice:linear-gradient(135deg,#a8edea 0%,#fed6e3 100%);--gradient-daily:linear-gradient(135deg,#f5f7fa 0%,#c3cfe2 100%);--gradient-travel:linear-gradient(135deg,#4facfe 0%,#00f2fe 100%);--gradient-deep:linear-gradient(135deg,#667eea 0%,#764ba2 100%);--gradient-business:linear-gradient(135deg,#fdfbfb 0%,#ebedee 100%);--gradient-tech:linear-gradient(135deg,#accbee 0%,#e7f0fd 100%)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-color);justify-content:center;align-items:center;min-height:100vh;font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.5;display:flex}#root{text-align:center;width:100%;max-width:1200px;margin:0 auto;padding:2rem}.main-title{background:linear-gradient(90deg,#646cff,#9089fc);color:#0000;-webkit-background-clip:text;background-clip:text;margin-bottom:.5rem;font-size:2rem}.subtitle{color:#666;margin-bottom:3rem;font-size:1.2rem}.category-selector-overlay{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:50;background:#f0f2f5f2;flex-direction:column;align-items:center;width:100%;height:100%;padding:2rem;transition:transform .4s cubic-bezier(.16,1,.3,1),opacity .4s;display:flex;position:absolute;top:0;left:0;overflow-y:auto}.category-selector-overlay.open{opacity:1;transform:translateY(0)}.category-selector-overlay.closed{opacity:0;pointer-events:none;transform:translateY(100%)}.category-header{justify-content:space-between;align-items:center;width:100%;max-width:800px;margin-bottom:2rem;display:flex}.close-menu-btn{cursor:pointer;color:#555;background:0 0;border:none;border-radius:50%;padding:.5rem;font-size:1.5rem;transition:background .2s}.close-menu-btn:hover{background:#0000001a}.category-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;width:100%;max-width:800px;padding-bottom:2rem;display:grid}.category-card{cursor:pointer;text-align:center;background:#fff;border:1px solid #0000000d;border-radius:16px;flex-direction:column;align-items:center;padding:1.5rem;transition:transform .2s,box-shadow .2s;display:flex;box-shadow:0 4px 6px #0000000d}.category-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-5px)}.category-icon{margin-bottom:1rem;font-size:3rem}.category-name{color:#333;margin-bottom:.5rem;font-size:1.5rem}.category-desc{color:#666;font-size:.9rem}.topic-card-container{justify-content:center;align-items:center;width:100%;height:auto;padding:20px;display:flex}.topic-card{background-color:#ececec;border-radius:20px;flex-direction:column;align-items:center;width:100%;min-width:300px;max-width:340px;height:auto;padding:2rem 1.5rem;display:flex;position:relative;overflow:hidden;box-shadow:0 10px 30px #0000001a}.q-badge{color:#fff;background-color:#e68a5c;border-radius:50%;flex-direction:column;justify-content:center;align-items:center;width:60px;height:60px;margin-top:1rem;margin-bottom:2rem;display:flex}.q-label{font-size:.8rem;font-weight:600;line-height:1}.q-number{font-size:1.4rem;font-weight:800;line-height:1}.question-content{text-align:center;flex-direction:column;flex-grow:1;justify-content:flex-start;align-items:center;width:100%;display:flex}.question-text{color:#333;word-break:break-word;margin-bottom:2rem;font-family:KoPub Batang,Georgia,serif;font-size:1.3rem;line-height:1.6}.divider{background-color:#e68a5c;width:40px;height:4px;margin:0 auto 2rem}.sub-question-text{color:#666;font-family:KoPub Batang,Georgia,serif;font-size:1rem;line-height:1.5}.card-footer{align-items:center;gap:.5rem;margin-top:auto;margin-bottom:1rem;display:flex}.footer-icon{background-color:#e68a5c;border-radius:50%;width:16px;height:16px}.footer-text{color:#555;font-family:Arial,sans-serif;font-size:.9rem;font-weight:700}@media (max-width:768px){.question-text{font-size:1.3rem}}