:root{--bg:#f7f5f2;--card:#fff;--text:#1a1a1a;--muted:#6b6b6b;--accent:#2d5bff;--accent-soft:#eef2ff;--border:#e5e2dd;--error:#d94040;--success:#2ba060;--radius:14px;--shadow:0 1px 3px rgba(0,0,0,0.04),0 4px 12px rgba(0,0,0,0.06)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:DM Sans,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh}.container{max-width:740px;margin:0 auto;padding:40px 24px 80px}.study-header{text-align:center;margin-bottom:48px}.study-badge{display:inline-block;font-size:11px;font-weight:600;letter-spacing:1.2px;text-transform:uppercase;color:var(--accent);background:var(--accent-soft);padding:6px 14px;border-radius:100px;margin-bottom:20px}.study-header h1{font-family:"DM Serif Display",serif;font-size:32px;font-weight:400;margin-bottom:12px}.study-header p{font-size:15px;color:var(--muted);max-width:520px;margin:0 auto}.est-time{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);margin-top:16px}.est-time svg{width:14px;height:14px}.section{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;margin-bottom:20px;box-shadow:var(--shadow)}.section.has-error{border-color:var(--error)}.section-label{font-size:11px;font-weight:600;letter-spacing:1px;text-transform:uppercase;color:var(--muted);margin-bottom:8px}.section h2{font-family:"DM Serif Display",serif;font-size:22px;font-weight:400;margin-bottom:6px}.section p.desc{font-size:14px;color:var(--muted);margin-bottom:24px}.pair-block{margin-bottom:32px;padding-bottom:32px;border-bottom:1px solid var(--border)}.pair-block:last-child{margin-bottom:0;padding-bottom:0;border-bottom:none}.pair-label{font-size:13px;font-weight:600;color:var(--muted);margin-bottom:12px;text-transform:uppercase;letter-spacing:.5px}.comparison-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:16px;gap:16px}.style-option{position:relative;cursor:pointer;border-radius:12px;overflow:hidden;border:3px solid transparent;transition:border-color .2s,transform .15s,box-shadow .2s;background:#fafaf8}.style-option:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.1)}.style-option.selected{border-color:var(--accent);box-shadow:0 0 0 3px rgba(45,91,255,.15)}.style-option img{width:100%;aspect-ratio:1;object-fit:cover;display:block}.check-badge{position:absolute;top:10px;right:10px;width:26px;height:26px;background:var(--accent);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transform:scale(.5);transition:opacity .2s,transform .2s;z-index:2}.style-option.selected .check-badge{opacity:1;transform:scale(1)}.style-tag{position:absolute;bottom:10px;left:10px;background:rgba(0,0,0,.65);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);color:#fff;font-size:11px;font-weight:600;padding:4px 10px;border-radius:6px;letter-spacing:.5px}.likert-group{margin-bottom:24px}.likert-group:last-child{margin-bottom:0}.likert-label{font-size:14px;font-weight:500;margin-bottom:10px}.likert-scale{display:flex;justify-content:space-between;gap:8px}.likert-scale label{flex:1 1;text-align:center;cursor:pointer}.likert-scale input{display:none}.likert-scale .pill{display:block;padding:10px 4px;border:2px solid var(--border);border-radius:10px;font-size:13px;font-weight:500;color:var(--muted);transition:all .15s}.likert-scale input:checked+.pill{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:600}.likert-scale label:hover .pill{border-color:#ccc}.likert-anchors{display:flex;justify-content:space-between;font-size:11px;color:#aaa;margin-top:6px;padding:0 4px}.text-field{width:100%;border:2px solid var(--border);border-radius:10px;padding:14px 16px;font-family:DM Sans,sans-serif;font-size:14px;color:var(--text);resize:vertical;min-height:90px;transition:border-color .2s;background:#fafaf8}.text-field:focus{outline:none;border-color:var(--accent);background:#fff}.text-field::placeholder{color:#bbb}.radio-group{display:flex;flex-wrap:wrap;gap:8px}.radio-group label{cursor:pointer}.radio-group input{display:none}.radio-group .chip{display:inline-block;padding:8px 18px;border:2px solid var(--border);border-radius:100px;font-size:13px;font-weight:500;color:var(--muted);transition:all .15s}.radio-group input:checked+.chip{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:600}.radio-group label:hover .chip{border-color:#ccc}.overall-choice{display:grid;grid-template-columns:1fr 1fr;grid-gap:12px;gap:12px;margin-top:4px}.overall-option{cursor:pointer;border:2px solid var(--border);border-radius:12px;padding:20px;text-align:center;transition:all .2s;background:#fafaf8}.overall-option:hover{border-color:#ccc;background:#fff}.overall-option.selected{border-color:var(--accent);background:var(--accent-soft)}.overall-option .style-name{font-size:16px;font-weight:700;margin-bottom:4px}.overall-option .style-desc{font-size:12px;color:var(--muted)}.overall-option.selected .style-name{color:var(--accent)}.tally{display:flex;align-items:center;gap:12px;margin-top:20px;padding:16px;background:#fafaf8;border-radius:10px;border:1px solid var(--border)}.tally-bar{flex:1 1;height:8px;background:var(--border);border-radius:100px;overflow:hidden;position:relative}.tally-fill{position:absolute;top:0;height:100%;border-radius:100px;transition:width .4s ease}.tally-fill.a{left:0;background:#6366f1}.tally-fill.b{right:0;background:#f59e0b}.tally-count{font-size:13px;font-weight:600;min-width:36px;text-align:center}.tally-count.a{color:#6366f1}.tally-count.b{color:#f59e0b}.submit-section{text-align:center;padding-top:12px}.submit-btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;border:none;padding:16px 48px;border-radius:100px;font-family:DM Sans,sans-serif;font-size:15px;font-weight:600;cursor:pointer;transition:background .2s,transform .1s;box-shadow:0 2px 8px rgba(45,91,255,.3)}.submit-btn:hover{background:#1a44e6;transform:translateY(-1px)}.submit-btn:active{transform:translateY(0)}.submit-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.submit-note{font-size:12px;color:#aaa;margin-top:12px}.completion-screen{text-align:center;padding:80px 24px}.completion-icon{width:64px;height:64px;background:#e8f5ee;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;margin-bottom:24px}.completion-screen h2{font-family:"DM Serif Display",serif;font-size:28px;font-weight:400;margin-bottom:12px}.completion-screen p{color:var(--muted);font-size:15px;margin-bottom:8px}.completion-code{display:inline-block;font-family:monospace;font-size:18px;font-weight:700;background:var(--accent-soft);color:var(--accent);padding:12px 28px;border-radius:10px;margin-top:16px;letter-spacing:2px}.error-msg{color:var(--error);font-size:13px;margin-top:8px;display:none}.section.has-error .error-msg{display:block}.progress-bar{position:fixed;top:0;left:0;height:3px;background:var(--accent);transition:width .4s ease;z-index:100}@media (max-width:560px){.container{padding:24px 16px 60px}.section{padding:24px 20px}.study-header h1{font-size:26px}.comparison-grid{gap:10px}.likert-scale .pill{padding:8px 2px;font-size:12px}.overall-choice{grid-template-columns:1fr}}