:root{--bg:#f5f4ef;--panel:#ffffff;--panel-strong:#f8fafc;--ink:#172026;--muted:#667085;--line:#d8dde4;--accent:#0f7b6c;--accent-dark:#0a5e53;--danger:#b42318;--shadow:0 16px 45px rgba(31,41,55,0.08)}*{box-sizing:border-box}body,html{min-height:100%}body{margin:0;background:var(--bg);color:var(--ink);font-family:Arial,PingFang SC,Microsoft YaHei,sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer}img{display:block;max-width:100%}.shell{width:min(1280px,calc(100% - 32px));margin:0 auto;padding:28px 0}.toolbar{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:18px}.eyebrow{margin:0 0 6px;color:var(--accent-dark);font-size:13px;font-weight:700;text-transform:uppercase}h1,h2,p{margin-top:0}h1{font-size:clamp(28px,4vw,46px);line-height:1.08}h1,h2{margin-bottom:0}h2{font-size:20px}.status-pill{min-width:58px;border:1px solid var(--line);border-radius:999px;padding:8px 14px;background:#fff;color:var(--accent-dark);font-weight:700;text-align:center}.workspace{display:grid;grid-template-columns:minmax(320px,420px) minmax(0,1fr);grid-gap:18px;gap:18px;align-items:start}.panel{border:1px solid var(--line);border-radius:8px;background:var(--panel);box-shadow:var(--shadow)}.input-panel{display:grid;grid-gap:16px;gap:16px;padding:20px}.output-panel{padding:20px}.panel-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:4px}.panel-header span{color:var(--muted);font-size:13px}.field{display:grid;grid-gap:8px;gap:8px}.field span{color:var(--muted);font-size:14px;font-weight:700}.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:6px;padding:11px 12px;background:#fff;color:var(--ink)}.field textarea{resize:vertical}.key-grid{display:grid;grid-gap:12px;gap:12px}.primary-button{width:100%;min-height:46px;border:0;border-radius:6px;background:var(--accent);color:#fff;font-weight:800}.primary-button:disabled{cursor:not-allowed;opacity:.48}.primary-button:not(:disabled):hover{background:var(--accent-dark)}.preview-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:14px;gap:14px}.image-box{margin:0;overflow:hidden;border:1px solid var(--line);border-radius:8px;background:var(--panel-strong)}.image-box figcaption{border-bottom:1px solid var(--line);padding:10px 12px;color:var(--muted);font-size:13px;font-weight:700}.empty-state,.image-box img{width:100%;aspect-ratio:1/1;object-fit:contain}.empty-state{display:grid;place-items:center;padding:16px;color:var(--muted);text-align:center}.result-stack{display:grid;grid-gap:10px;gap:10px;margin-top:16px}.error-box,.info-row,.prompt-box{border:1px solid var(--line);border-radius:8px;padding:12px;background:#fff}.info-row{display:grid;grid-template-columns:92px minmax(0,1fr);grid-gap:12px;gap:12px;align-items:start}.info-row span,.prompt-box span{color:var(--muted);font-size:13px;font-weight:700}.info-row strong{overflow-wrap:anywhere;font-size:14px}.prompt-box p{margin:8px 0 0;color:#344054;line-height:1.65;white-space:pre-wrap}.cost-box{border:1px solid rgba(15,123,108,.22);border-radius:8px;padding:12px;background:#f3fbf8}.cost-box p,.cost-box.compact p{margin:8px 0 0;color:#475467;font-size:13px;line-height:1.55}.cost-box>span{color:var(--accent-dark);font-size:13px;font-weight:800}.cost-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:8px;gap:8px;margin-top:10px}.cost-metric{border:1px solid rgba(15,123,108,.16);border-radius:6px;padding:8px;background:rgba(255,255,255,.78)}.cost-metric span{display:block;color:var(--muted);font-size:12px;font-weight:700}.cost-metric strong{display:block;margin-top:4px;overflow-wrap:anywhere;color:var(--ink);font-size:14px}.error-box{margin-top:16px;border-color:rgba(180,35,24,.3);background:#fff4f2;color:var(--danger)}.error-box p{margin:8px 0 0}@media (max-width:900px){.toolbar{align-items:flex-start;flex-direction:column}.preview-grid,.workspace{grid-template-columns:1fr}}