:root{font-family:Inter,SF Pro Text,PingFang SC,Microsoft YaHei,Arial,sans-serif;color:#161616;background:#f4f4f4;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;--blue: #0f62fe;--blue-dark: #0043ce;--border: #d9d9d9;--text-soft: #6f6f6f;--panel: #ffffff;--surface: #f4f4f4;--error: #da1e28;--ok: #198038}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0;background:var(--surface)}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.72}.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:36px;border:1px solid transparent;border-radius:2px;padding:0 14px;font-size:14px}.btn-primary{background:var(--blue);color:#fff}.btn-primary:hover{background:var(--blue-dark)}.btn-secondary{border-color:#6f6f6f;background:#262626;color:#fff}.login-shell{display:grid;min-height:100vh;place-items:center;padding:20px;background:#161616}.login-panel{display:grid;width:min(380px,100%);gap:16px;border:1px solid #393939;background:#fff;padding:28px}.login-panel h1{margin:0 0 8px;font-size:22px;line-height:1.25}label{display:grid;gap:7px;color:#393939;font-size:13px}input,select{width:100%;height:38px;border:1px solid var(--border);border-radius:2px;background:#fff;color:#161616;outline:0;padding:0 10px}input:focus,select:focus{border-color:var(--blue);box-shadow:inset 0 0 0 1px var(--blue)}.form-error{min-height:30px;border-left:3px solid var(--error);background:#fff1f1;color:#a2191f;padding:7px 10px;font-size:13px}.app-shell{min-height:100vh;background:linear-gradient(180deg,#f8f8f8 0,#f4f4f4 210px),var(--surface)}.app-header{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:58px;padding:0 20px;border-bottom:1px solid #393939;background:#161616;color:#fff}.brand-name{font-size:15px;font-weight:700}.account-line{margin-top:3px;color:#c6c6c6;font-size:12px}.tool-layout{display:grid;grid-template-columns:minmax(320px,390px) minmax(0,1fr);gap:18px;width:min(1500px,100%);margin:0 auto;padding:18px}.panel{border:1px solid var(--border);border-radius:2px;background:var(--panel);box-shadow:0 1px 2px #0000000a}.panel-header{min-height:54px;border-bottom:1px solid var(--border);padding:14px 16px}h1,h2{margin:0;font-size:18px;line-height:1.25}h2{font-size:15px}.input-panel{align-self:start}.mode-buttons{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;border-bottom:1px solid var(--border);padding:16px}.prompt-button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;border:1px solid var(--border);border-radius:2px;background:#fff;color:#161616;padding:0 12px;font-size:14px;font-weight:700;transition:border-color .15s ease,background-color .15s ease,transform .15s ease}.prompt-button:hover{border-color:#8d8d8d;transform:translateY(-1px)}.prompt-button.active{border-color:var(--blue);background:#edf5ff;color:#0043ce;box-shadow:inset 3px 0 0 var(--blue)}.upload-box{display:grid;justify-items:center;gap:8px;margin:16px;border:1px dashed #8d8d8d;background:linear-gradient(180deg,#0f62fe0d,#0f62fe00),#f8f8f8;padding:28px 22px;color:#161616;text-align:center;transition:border-color .15s ease,background-color .15s ease}.upload-box:hover,.upload-box.has-files{border-color:var(--blue);background:#edf5ff}.upload-icon{display:grid;width:46px;height:46px;place-items:center;border:1px solid #a6c8ff;background:#fff;color:var(--blue)}.upload-box strong{font-size:16px}.upload-box span{color:var(--text-soft);font-size:13px}.upload-box input{display:none}.file-list{display:grid;gap:6px;margin:0 16px 16px}.file-row{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:8px;min-height:30px;border:1px solid var(--border);background:#fff;padding:0 9px;color:var(--text-soft);font-size:12px}.file-row span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding:0 16px 16px}.field-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.process-button{width:calc(100% - 32px);margin:0 16px 16px}.status-line{margin:0 16px 16px;border-left:3px solid var(--blue);background:#edf5ff;padding:9px 10px;color:#0043ce;font-size:13px}.status-line.done{border-left-color:var(--ok);background:#defbe6;color:#0e6027}.status-line.error{border-left-color:var(--error);background:#fff1f1;color:#a2191f}.preview-panel{min-height:calc(100vh - 94px)}.workspace-column{display:grid;gap:18px;min-width:0}.preview-grid{display:grid;grid-template-columns:minmax(0,1.05fr) 54px minmax(0,1.05fr);min-height:calc(100vh - 149px);padding:18px}.preview-box{display:grid;align-content:start;min-height:min(820px,calc(100vh - 176px));border:1px solid var(--border);background:#f8f8f8}.source-box{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1px;background:var(--border)}.source-box figure{min-width:0;margin:0;background:#fff}.source-box img{display:block;width:100%;height:clamp(420px,44vw,720px);object-fit:contain;background:#f4f4f4}.source-box figcaption{overflow:hidden;height:30px;padding:8px;color:var(--text-soft);font-size:12px;text-overflow:ellipsis;white-space:nowrap}.empty-preview{display:grid;grid-column:1 / -1;min-height:min(820px,calc(100vh - 176px));place-items:center;color:var(--text-soft);font-size:14px}.flow-arrow{display:grid;place-items:center;color:#525252}.result-box{place-items:center}.generated-list{display:grid;align-content:start;gap:1px;width:100%;min-height:inherit;background:var(--border)}.generated-list figure{margin:0;background:#fff}.generated-list img{display:block;width:100%;height:clamp(520px,52vw,820px);object-fit:contain;background:#f4f4f4}.generated-list figcaption{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:36px;padding:8px 10px;color:var(--text-soft);font-size:12px}.download-hover{display:inline-flex;align-items:center;gap:5px;min-height:28px;border:1px solid #a6c8ff;background:#edf5ff;padding:0 9px;color:var(--blue);font-weight:700;text-decoration:none;transition:background-color .15s ease,border-color .15s ease,transform .15s ease}.download-hover:hover{border-color:var(--blue);background:#d0e2ff;transform:translateY(-1px)}.mode-white-background{background:#fff}.mode-black-background{background:#050505;color:#fff}.mode-detail-page{background:linear-gradient(#fff 0 0) top / 100% 72px no-repeat,repeating-linear-gradient(#f4f4f4 0 44px,#fff 44px 96px)}.mode-product-size{background:linear-gradient(90deg,rgba(15,98,254,.12) 1px,transparent 1px),linear-gradient(rgba(15,98,254,.12) 1px,transparent 1px),#fff;background-size:32px 32px}.result-state{display:grid;justify-items:center;gap:10px;color:inherit}.result-state strong{font-size:18px}.result-state span{color:var(--text-soft);font-size:13px}.mode-black-background .result-state span{color:#c6c6c6}.history-panel{overflow:hidden}.history-header{display:flex;align-items:center;justify-content:space-between;gap:12px}.history-header h2{display:inline-flex;align-items:center;gap:7px}.icon-text-button{display:inline-flex;align-items:center;gap:5px;min-height:30px;border:1px solid var(--border);border-radius:2px;background:#fff;color:#393939;padding:0 9px;font-size:12px}.icon-text-button:hover{border-color:#8d8d8d;background:#f4f4f4}.history-content{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:1px;background:var(--border)}.history-preview{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--border)}.history-preview figure{min-width:0;margin:0;background:#fff}.history-preview img{display:block;width:100%;height:clamp(220px,24vw,360px);object-fit:contain;background:#f4f4f4}.history-preview figcaption{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:36px;padding:8px 10px;color:var(--text-soft);font-size:12px}.history-list{display:grid;align-content:start;max-height:397px;overflow:auto;background:#fff}.history-item{display:grid;grid-template-columns:48px minmax(0,.8fr) minmax(72px,auto);align-items:center;gap:9px;min-height:64px;border:0;border-bottom:1px solid var(--border);background:#fff;color:#161616;padding:8px 10px;text-align:left}.history-item:hover,.history-item.active{background:#edf5ff}.history-item.active{box-shadow:inset 3px 0 0 var(--blue)}.history-item img{width:48px;height:48px;object-fit:cover;background:#f4f4f4}.history-item span,.history-item small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.history-item span{font-size:13px;font-weight:700}.history-item time{color:var(--text-soft);font-size:12px;text-align:right}.history-item small{grid-column:2 / -1;color:var(--text-soft);font-size:12px}.history-empty{display:grid;min-height:160px;place-items:center;color:var(--text-soft);font-size:13px}@media(max-width:920px){.tool-layout{grid-template-columns:1fr}.preview-panel{min-height:auto}.preview-grid{grid-template-columns:1fr;gap:12px;min-height:auto}.flow-arrow{min-height:36px;transform:rotate(90deg)}.preview-box,.empty-preview{min-height:560px}.history-content,.history-preview{grid-template-columns:1fr}.history-list{max-height:none}}@media(max-width:620px){.app-header{align-items:flex-start;flex-direction:column;padding:14px}.tool-layout{padding:12px}.mode-buttons,.field-grid,.field-grid.three,.source-box{grid-template-columns:1fr}.login-panel{padding:22px}}