:root{color-scheme:light dark;--navy: #0B1130;--blue: #146EF5;--teal: #26B8FF;--scale: #1F9D6B;--fix: #FF5205;--hold: #7A2BAB;--cut: #D92B6B;--bg-a: #EEF1FC;--bg-b: #E3EAF9;--surface: #FFFFFF;--surface-2: #F5F7FD;--border: #E1E5F5;--text: #10143A;--text-muted: #5B6180;--shadow: rgba(11, 17, 48, .08)}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg-a: #0A0E24;--bg-b: #0D1230;--surface: #12162E;--surface-2: #171C38;--border: #262C4E;--text: #EDEFFB;--text-muted: #9AA0C3;--shadow: rgba(0, 0, 0, .35)}}:root[data-theme=dark]{--bg-a: #0A0E24;--bg-b: #0D1230;--surface: #12162E;--surface-2: #171C38;--border: #262C4E;--text: #EDEFFB;--text-muted: #9AA0C3;--shadow: rgba(0, 0, 0, .35)}*{box-sizing:border-box}html,body{margin:0;padding:0}body{min-height:100vh;background:linear-gradient(160deg,var(--bg-a),var(--bg-b));color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe 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auto}@media(max-width:860px){.layout{grid-template-columns:1fr}header,main{padding-left:20px;padding-right:20px}}.card{background:var(--surface);border:1px solid var(--border);border-radius:20px;box-shadow:0 12px 32px var(--shadow);padding:32px}.hero{margin-bottom:28px}.hero .eyebrow{color:var(--blue)}.hero h1{font-size:32px;line-height:1.15;margin:10px 0 12px}.hero p{color:var(--text-muted);font-size:15px;line-height:1.6;max-width:60ch;margin:0}.progress-row{display:flex;align-items:baseline;justify-content:space-between;font-size:13px;font-weight:600;color:var(--text-muted);margin-bottom:10px}.progress-track{height:6px;border-radius:999px;background:var(--surface-2);overflow:hidden;margin-bottom:24px}.progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--blue),var(--teal));transition:width .25s ease}.eyebrow{display:block;font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--blue);margin-bottom:10px}.question-title{font-size:24px;line-height:1.3;margin-bottom:10px}.question-helper{color:var(--text-muted);font-size:14.5px;line-height:1.6;margin:0 0 24px;max-width:62ch}.options{display:flex;flex-direction:column;gap:12px}.option-btn{display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;width:100%;background:var(--surface-2);border:1px solid var(--border);border-radius:14px;padding:16px 18px;cursor:pointer;font-family:inherit;color:var(--text);transition:border-color .12s ease,transform .12s ease,box-shadow .12s ease}.option-btn:hover{border-color:var(--blue);box-shadow:0 6px 18px 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var(--shadow);transform:translateY(-1px)}#sidebar{display:flex;flex-direction:column;gap:20px}.sidebar-card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:24px;box-shadow:0 12px 32px var(--shadow)}.sidebar-label{font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted);margin-bottom:16px}.stage-list{display:flex;flex-direction:column;gap:10px}.stage-row{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:12px;border:1px solid transparent;transition:background .15s ease,border-color .15s ease}.stage-row.active{border-color:var(--blue);background:#146ef514}.stage-number{width:22px;height:22px;border-radius:50%;background:var(--surface-2);border:1px solid var(--border);color:var(--text-muted);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}.stage-row.active 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