:root{--bg:#eef0f2;--panel:#ffffff;--panel-2:#f5f6f8;--border:#e2e5ea;--text:#232a33;--muted:#8b93a0;--accent:#ec5a24;--accent-weak:#fdeee7;--danger:#d64545;--radius:12px}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Malgun Gothic,Apple SD Gothic Neo,sans-serif;-webkit-font-smoothing:antialiased}button{font-family:inherit}.app{display:flex;flex-direction:column;min-height:100vh}.topbar{display:flex;align-items:center;justify-content:space-between;gap:20px;background:var(--panel);border-bottom:1px solid var(--border);padding:12px 22px}.brand{display:flex;flex-direction:column;line-height:1}.brand-main{font-size:20px;font-weight:800;letter-spacing:.06em}.brand-sub{font-size:9px;letter-spacing:.28em;color:var(--muted);margin-top:3px}.stepper{gap:22px}.step,.stepper{display:flex;align-items:center}.step{gap:7px;color:var(--muted);font-size:13px;white-space:nowrap}.step-no{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;border:1.5px solid var(--border);font-size:11px;font-weight:700}.step.done .step-no{background:#cfe8d6;border-color:#cfe8d6;color:#2e7d46}.step.active{color:var(--text);font-weight:700}.step.active .step-no{background:var(--accent);border-color:var(--accent);color:#fff}.topbar-actions{display:flex;gap:6px}.icon-btn{background:transparent;border:none;color:var(--muted);font-size:12px;cursor:pointer;padding:6px 8px;border-radius:8px}.icon-btn:hover{background:var(--panel-2);color:var(--text)}.layout{flex:1 1;display:grid;grid-template-columns:320px 1fr 300px;grid-gap:16px;gap:16px;padding:16px;align-items:start}@media (max-width:1100px){.layout{grid-template-columns:1fr}}.left-panel,.right-panel{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.lp-section{padding-bottom:16px;margin-bottom:16px;border-bottom:1px solid var(--border)}.lp-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.lp-head h3{font-size:14px;margin:0;font-weight:700}.badge{font-size:10px;font-weight:700;letter-spacing:.05em;color:var(--accent);background:var(--accent-weak);padding:3px 7px;border-radius:999px}.system-grid{display:grid;grid-template-columns:repeat(2,1fr);grid-gap:8px;gap:8px}.system-card{display:flex;flex-direction:column;gap:3px;align-items:flex-start;text-align:left;padding:10px;border:1.5px solid var(--border);border-radius:10px;background:var(--panel-2);color:var(--text);cursor:pointer;transition:border-color 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rgba(0,0,0,.5)}.selected-color{margin-top:10px;display:flex;flex-direction:column;gap:2px}.selected-color strong{font-size:13px}.selected-color span{font-size:11px;color:var(--muted)}.field{margin-bottom:10px}.field>label{display:block;font-size:11px;color:var(--muted);margin-bottom:5px}.field-row{display:flex;gap:10px}.field-row .field{flex:1 1}.field input,textarea.instruction{width:100%;background:var(--panel-2);border:1px solid var(--border);border-radius:9px;color:var(--text);padding:9px 11px;font-size:13px;font-family:inherit}textarea.instruction{resize:vertical;min-height:48px}.segmented{display:flex;gap:7px}.segmented .seg{flex:1 1;padding:9px;border:1.5px solid var(--border);border-radius:9px;background:var(--panel-2);color:var(--muted);font-size:13px;font-weight:600;cursor:pointer}.segmented 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#333c47;border-radius:var(--radius)}.hint{color:#c3cad3;text-align:center;font-size:15px;line-height:1.6}.dim{font-size:12px;color:#7b8593}.viewer-center{width:100%;display:flex;flex-direction:column;align-items:center;gap:14px;padding:20px}.preview{max-width:100%;max-height:460px;object-fit:contain;border-radius:8px}.overlay-hint{color:#c3cad3;font-size:13px}.overlay-hint b{color:var(--accent)}.spinner{width:36px;height:36px;border:3px solid #333c47;border-top:3px solid var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes 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button{display:block;text-align:center;text-decoration:none;padding:12px;border-radius:10px;font-size:14px;font-weight:700;cursor:pointer}.btn-outline{background:var(--panel);border:1px solid var(--border);color:var(--text)}.btn-outline:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);border:none;color:#fff}.btn-primary:disabled{opacity:.45;cursor:not-allowed}.btn-orange-outline{background:var(--accent-weak);border:1px solid var(--accent);color:var(--accent)}.bottombar{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:1px;gap:1px;background:var(--border);border-top:1px solid var(--border)}.cta{display:flex;align-items:center;justify-content:center;gap:8px;background:var(--panel);border:none;padding:16px;font-size:13px;color:var(--text);cursor:pointer}.cta:hover{background:var(--panel-2);color:var(--accent)}.cta-icon{font-size:16px}