*{box-sizing:border-box}html,body,#root{margin:0;padding:0;min-height:100vh}body{background:#f5f6f8;color:#1f2937;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}.app-header{position:sticky;top:0;z-index:100;background:#fff;box-shadow:0 1px 4px #00000014}.app-header-inner{max-width:1200px;margin:0 auto;height:56px;padding:0 24px;display:flex;align-items:center;justify-content:space-between}.app-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:600;color:#1f2937;cursor:pointer}.app-brand img{height:32px;object-fit:contain}.app-container{margin:0 auto;padding:24px 16px 48px}.intro-hero{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(160deg,#fff,#fdeef0);padding:48px 24px}.intro-hero-inner{max-width:960px;width:100%;display:flex;align-items:center;gap:64px;flex-wrap:wrap;justify-content:center}.intro-copy{flex:1 1 380px;min-width:300px}.intro-copy img.logo-img{height:56px;object-fit:contain}.intro-tag{font-size:22px;font-weight:600;color:#c90117;margin:16px 0 12px}.intro-desc{font-size:15px;color:#6b7280;line-height:1.9;margin-bottom:32px}.intro-illo{flex:0 1 420px;min-width:260px}.intro-illo img{width:100%;border-radius:16px;box-shadow:0 16px 48px #c901171f}.quiz-option-card{display:block;width:100%;text-align:left;padding:12px 16px;border:1px solid #e5e7eb;border-radius:10px;background:#fafafa;color:#4b5563;font-size:14px;line-height:1.7;cursor:pointer;transition:all .15s}.quiz-option-card:hover:not(:disabled){border-color:#c90117}.quiz-option-card.active{background:#fde8ea;border-color:#c90117;color:#c90117;font-weight:500}.quiz-option-card:disabled{cursor:default;opacity:.75}.quiz-scale-btn{flex:1;height:40px;border:1px solid #e5e7eb;border-radius:10px;background:#fafafa;color:#6b7280;font-size:14px;font-weight:600;cursor:pointer;transition:all .15s}.quiz-scale-btn:hover:not(:disabled){border-color:#c90117}.quiz-scale-btn.active{background:#c90117;border-color:#c90117;color:#fff}.quiz-scale-btn:disabled{cursor:default;opacity:.75}.quiz-qnav{position:sticky;top:64px;z-index:90;background:#fff;border-radius:12px;box-shadow:0 1px 4px #00000014;padding:10px 16px;margin-bottom:16px}.qnav-panel{position:absolute;top:100%;left:0;right:0;margin-top:8px;background:#fff;border-radius:12px;box-shadow:0 8px 24px #0000001f;padding:12px 16px;max-height:320px;overflow-y:auto;animation:qnav-panel-in .15s ease-out}@keyframes qnav-panel-in{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}.qnav-btn{width:28px;height:28px;border-radius:8px;border:1px solid #e5e7eb;background:#fafafa;color:#9ca3af;font-size:12px;font-weight:600;cursor:pointer;transition:all .15s;flex-shrink:0;padding:0}.qnav-btn:hover{border-color:#c90117;color:#c90117}.qnav-btn.answered,.qnav-btn.answered:hover{background:#c90117;border-color:#c90117;color:#fff}.qnav-highlight{border-radius:10px;outline:2px solid #fda4af;outline-offset:4px;transition:outline .2s}.field-missing{border-radius:10px;outline:2px solid #fda4af;background:#fff1f280;padding:8px;margin:-8px;transition:all .2s}