:root{--bg-primary:#fafbfc;--bg-card:#fff;--bg-input:#f5f7fa;--text-primary:#1a1a2e;--text-secondary:#4a5568;--text-tertiary:#718096;--brand-primary:#2383e2;--brand-hover:#1a6bc4;--border-primary:#e2e8f0;--border-focus:#2383e2;--success:#38a169;--error:#e53e3e;--warning:#dd6b20;--radius:8px;--shadow:0 2px 8px #00000014}[data-theme=dark]{--bg-primary:#0f1419;--bg-card:#1a1f2e;--bg-input:#252b3b;--text-primary:#e2e8f0;--text-secondary:#a0aec0;--text-tertiary:#718096;--border-primary:#2d3748;--border-focus:#4299e1;--shadow:0 2px 8px #0000004d}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-primary);color:var(--text-primary);min-height:100vh;font-family:Inter,Noto Sans SC,-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.6}.research-page{max-width:680px;margin:0 auto;padding:24px 16px 80px}.research-header{text-align:center;margin-bottom:32px;padding:24px 0}.research-header .brand-icon{background:linear-gradient(135deg, var(--brand-primary), #1b6bc4);color:#fff;border-radius:14px;justify-content:center;align-items:center;width:56px;height:56px;margin-bottom:16px;font-size:24px;font-weight:700;display:inline-flex;box-shadow:0 4px 12px #2383e24d}.research-header h1{margin-bottom:8px;font-size:24px;font-weight:700}.research-header p{color:var(--text-secondary);font-size:14px}.progress-bar{background:var(--border-primary);border-radius:4px;height:4px;margin-bottom:32px;overflow:hidden}.progress-fill{background:var(--brand-primary);border-radius:4px;height:100%;transition:width .3s}.progress-text{text-align:center;color:var(--text-tertiary);margin-bottom:8px;font-size:12px}.research-card{background:var(--bg-card);border:1px solid var(--border-primary);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:16px;padding:24px;animation:.3s fadeIn}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.question-label{color:var(--text-primary);margin-bottom:12px;font-size:15px;font-weight:600}.question-label .required{color:var(--error);margin-left:4px}.question-hint{color:var(--text-tertiary);margin-bottom:12px;font-size:12px}.option-group{flex-direction:column;gap:8px;display:flex}.option-item{background:var(--bg-input);border:1px solid var(--border-primary);border-radius:var(--radius);cursor:pointer;align-items:center;gap:10px;padding:12px 14px;transition:all .15s;display:flex}.option-item:hover{border-color:var(--brand-primary);background:#2383e20d}.option-item.selected{border-color:var(--brand-primary);background:#2383e21a}.option-item input[type=radio],.option-item input[type=checkbox]{accent-color:var(--brand-primary);width:16px;height:16px}.option-item label{cursor:pointer;flex:1;font-size:14px}.option-item.multi-selected{border-color:var(--brand-primary);background:#2383e21a}.text-input{background:var(--bg-input);border:1px solid var(--border-primary);border-radius:var(--radius);width:100%;color:var(--text-primary);resize:vertical;min-height:80px;padding:12px 14px;font-family:inherit;font-size:14px;transition:border-color .15s}.text-input:focus{border-color:var(--border-focus);outline:none;box-shadow:0 0 0 3px #2383e21a}.char-count{text-align:right;color:var(--text-tertiary);margin-top:4px;font-size:12px}.char-count.warning{color:var(--warning)}.char-count.error{color:var(--error)}.consent-section{background:var(--bg-card);border:1px solid var(--border-primary);border-radius:var(--radius);margin-bottom:16px;padding:24px}.consent-section h3{margin-bottom:16px;font-size:16px;font-weight:600}.consent-item{border-bottom:1px solid var(--border-primary);align-items:flex-start;gap:12px;padding:12px 0;display:flex}.consent-item:last-child{border-bottom:none}.consent-item input[type=checkbox]{accent-color:var(--brand-primary);width:18px;height:18px;margin-top:2px}.consent-item label{font-size:14px;line-height:1.5}.consent-item label strong{margin-bottom:2px;display:block}.value-proposition-card{border-radius:var(--radius);background:linear-gradient(135deg,#2383e214,#1b6bc40d);border:1px solid #2383e233;margin-bottom:16px;padding:16px}.value-proposition-card .vp-label{color:var(--brand-primary);text-transform:uppercase;margin-bottom:8px;font-size:12px;font-weight:600}.value-proposition-card .vp-text{color:var(--text-primary);font-size:15px;font-weight:500}.contact-input-group{margin-top:12px;display:none}.contact-input-group.visible{display:block}.contact-input{background:var(--bg-input);border:1px solid var(--border-primary);border-radius:var(--radius);width:100%;color:var(--text-primary);padding:12px 14px;font-size:14px;transition:border-color .15s}.contact-input:focus{border-color:var(--border-focus);outline:none}.btn{border-radius:var(--radius);cursor:pointer;border:none;justify-content:center;align-items:center;gap:8px;padding:12px 24px;font-family:inherit;font-size:14px;font-weight:600;transition:all .15s;display:inline-flex}.btn-primary{background:var(--brand-primary);color:#fff}.btn-primary:hover{background:var(--brand-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--bg-input);color:var(--text-primary);border:1px solid var(--border-primary)}.btn-secondary:hover{background:var(--border-primary)}.navigation-buttons{gap:12px;margin-top:24px;display:flex}.navigation-buttons .btn{flex:1}.message{border-radius:var(--radius);margin-bottom:16px;padding:12px 16px;font-size:14px}.message-error{color:var(--error);background:#e53e3e1a;border:1px solid #e53e3e33}.message-success{color:var(--success);background:#38a1691a;border:1px solid #38a16933}.loading-overlay{z-index:1000;background:#00000080;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.loading-spinner{background:var(--bg-card);border-radius:var(--radius);text-align:center;padding:32px}.loading-spinner:after{content:"";border:3px solid var(--border-primary);border-top-color:var(--brand-primary);border-radius:50%;width:32px;height:32px;animation:.8s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.thankyou-page{text-align:center;padding:48px 24px}.thankyou-page .success-icon{background:#38a1691a;border-radius:50%;justify-content:center;align-items:center;width:80px;height:80px;margin-bottom:24px;font-size:40px;display:inline-flex}.thankyou-page h1{margin-bottom:12px;font-size:24px}.thankyou-page p{color:var(--text-secondary);margin-bottom:24px}.manage-token-box{background:var(--bg-input);border:1px solid var(--border-primary);border-radius:var(--radius);word-break:break-all;margin-bottom:24px;padding:16px;font-family:monospace;font-size:13px}.manage-token-box .token-label{color:var(--text-tertiary);margin-bottom:8px;font-family:inherit;font-size:12px}.manage-token-box .token-value{color:var(--brand-primary);font-weight:600}@media (width<=480px){.research-page{padding:16px 12px 60px}.research-card{padding:16px}.option-item{padding:10px 12px}}