:root{--ink:#171917;--muted:#747a72;--line:#dfe2dc;--paper:#fff;--surface:#f4f5f1;--accent:#e85d36;--accent-dark:#c84522;--green:#167a55}*{box-sizing:border-box}html{background:var(--surface)}body{color:var(--ink);background:var(--surface);margin:0;font-family:Arial,PingFang SC,Microsoft YaHei,sans-serif}button,textarea,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{color:inherit}.app-shell{width:min(1180px,100% - 40px);margin:0 auto;padding:26px 0 64px}.topbar{align-items:center;min-height:58px;margin-bottom:24px;display:flex}.brand-mark{color:#fff;background:var(--ink);border-radius:7px;place-items:center;width:42px;height:42px;margin-right:12px;font:700 21px Georgia,serif;display:grid}.topbar h1{letter-spacing:0;margin:0;font-size:18px;line-height:1.35}.topbar p{color:var(--muted);margin:2px 0 0;font-size:12px}.workspace{background:var(--paper);border:1px solid var(--line);border-radius:8px;grid-template-columns:minmax(0,1.55fr) minmax(320px,.85fr);display:grid;overflow:hidden;box-shadow:0 12px 35px #1c231a0f}.canvas-column{border-right:1px solid var(--line);min-width:0;padding:28px}.control-column{background:#fafbf8;padding:28px}.section-heading{justify-content:space-between;align-items:center;margin-bottom:18px;display:flex}.section-heading>div{align-items:center;gap:10px;display:flex}.section-heading h2{letter-spacing:0;margin:0;font-size:16px}.section-heading.compact{margin-bottom:14px}.step{width:26px;height:22px;color:var(--accent-dark);background:#fff0ea;border-radius:4px;place-items:center;font-size:10px;font-weight:700;display:inline-grid}.text-button{color:var(--accent-dark);cursor:pointer;background:0 0;border:0;padding:4px 0;font-size:13px}.text-button:disabled{color:#afb3ac;cursor:default}.file-input{display:none}.upload-zone{cursor:pointer;background:#f8f9f6;border:1px dashed #bfc5bb;border-radius:6px;flex-direction:column;justify-content:center;align-items:center;width:100%;min-height:480px;display:flex}.upload-zone:hover{border-color:var(--accent);background:#fffaf7}.upload-icon{width:46px;height:46px;color:var(--accent);background:#fff0ea;border-radius:50%;place-items:center;margin-bottom:15px;font-size:26px;display:grid}.upload-zone strong{font-size:15px}.upload-zone small{color:var(--muted);margin-top:8px;font-size:12px}.image-stage{cursor:crosshair;touch-action:none;-webkit-user-select:none;user-select:none;background:#20231f;border-radius:6px;place-items:center;min-height:480px;display:grid;position:relative;overflow:hidden}.image-stage img{object-fit:contain;pointer-events:none;width:auto;max-width:100%;height:auto;max-height:590px;display:block}.drawing-layer{pointer-events:none;position:absolute}.draw-hint{color:#fff;white-space:nowrap;pointer-events:none;background:#141613c7;border-radius:4px;padding:7px 11px;font-size:12px;position:absolute;bottom:12px;left:50%;transform:translate(-50%)}.image-meta{color:var(--muted);justify-content:space-between;gap:16px;margin-top:10px;font-size:12px;display:flex}.image-meta>span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.drawing-actions{flex:none;gap:14px;display:flex}.control-section{margin-bottom:27px;position:relative}.control-section label{color:#51564f;margin-bottom:8px;font-size:12px;font-weight:700;display:block}textarea{resize:vertical;width:100%;min-height:146px;color:var(--ink);background:#fff;border:1px solid #ccd1c8;border-radius:5px;outline:none;padding:13px 14px 28px;line-height:1.6}textarea:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px #e85d361a}textarea::placeholder{color:#a5aaa2}.char-count{color:#9ba097;font-size:10px;position:absolute;bottom:9px;right:10px}.segmented{grid-template-columns:repeat(3,1fr);gap:6px;margin-bottom:12px;display:grid}.segmented button{cursor:pointer;background:#fff;border:1px solid #d4d8d1;border-radius:4px;min-width:0;height:36px;font-size:12px}.segmented button.active{color:var(--accent-dark);border-color:var(--accent);background:#fff5f1;font-weight:700}.pixel-size{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr) auto;align-items:center;gap:8px;margin-bottom:14px;display:grid}.pixel-size input{background:#fff;border:1px solid #d4d8d1;border-radius:4px;outline:none;width:100%;min-width:0;height:39px;padding:0 10px}.pixel-size input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #e85d361a}.pixel-size span,.pixel-size small{color:var(--muted)}.settings-row{grid-template-columns:1fr 1fr;gap:10px;display:grid}select{background:#fff;border:1px solid #d4d8d1;border-radius:4px;outline:none;width:100%;height:39px;padding:0 10px}.generate-button{color:#fff;background:var(--accent);cursor:pointer;border:0;border-radius:5px;width:100%;min-height:46px;font-weight:700}.generate-button:hover{background:var(--accent-dark)}.generate-button:disabled{cursor:not-allowed;background:#b9bcb7}.job-status{border:1px solid var(--line);background:#fff;border-radius:5px;margin-top:16px;padding:13px}.job-status>div:first-child{justify-content:space-between;font-size:12px;display:flex}.job-status p{color:var(--muted);margin:8px 0 0;font-size:11px;line-height:1.5}.job-status.error{border-color:#efb3aa}.job-status.error strong{color:#b72e23}.progress-track{background:#e6e8e3;border-radius:2px;height:4px;margin-top:9px;overflow:hidden}.progress-track span{background:var(--accent);height:100%;transition:width .3s;display:block}.results-section{border:1px solid var(--line);background:#fff;border-radius:8px;margin-top:24px;padding:28px}.result-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.result-card{border:1px solid var(--line);border-radius:6px;overflow:hidden}.result-card img{aspect-ratio:1;object-fit:contain;background:#eef0eb;width:100%;display:block}.result-card a{color:var(--accent-dark);text-align:center;padding:12px;font-size:13px;font-weight:700;text-decoration:none;display:block}@media (max-width:820px){.app-shell{width:min(100% - 24px,680px);padding-top:16px}.workspace{grid-template-columns:1fr}.canvas-column{border-right:0;border-bottom:1px solid var(--line);padding:20px}.control-column{padding:20px}.upload-zone,.image-stage{min-height:360px}}@media (max-width:480px){.app-shell{width:100%;padding:0 0 36px}.topbar{border-bottom:1px solid var(--line);background:#fff;min-height:70px;margin:0;padding:12px 16px}.workspace{box-shadow:none;border:0;border-radius:0}.canvas-column,.control-column{padding:18px 16px}.upload-zone,.image-stage{min-height:300px}.image-stage img{max-height:430px}.settings-row{grid-template-columns:1fr}.results-section{border-left:0;border-right:0;border-radius:0;margin:12px 0 0;padding:18px 16px}.result-grid{grid-template-columns:1fr}}