:root{color:#12304f;background:#eef6ff;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button,input,select{font:inherit}button{border:0}.app-shell{display:grid;grid-template-columns:330px minmax(0,1fr);min-height:100vh;background:linear-gradient(180deg,#ffffffc7,#eef6ffe0),#eef6ff}.side-panel{display:flex;flex-direction:column;gap:18px;border-right:1px solid #cfe2f8;background:#ffffffeb;padding:22px;overflow-y:auto}.side-footer{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:18px;border-top:1px solid #e1edf9}.nest-button{display:inline-flex;flex:1;min-width:0;min-height:46px;align-items:center;justify-content:center;gap:8px;border-radius:8px;color:#fff;background:#0d74dc;box-shadow:0 12px 26px #0d74dc38;cursor:pointer}.nest-button:disabled{color:#7891ab;background:#d7e6f4;box-shadow:none;cursor:not-allowed}.reset-button{display:inline-grid;width:46px;height:46px;flex:0 0 46px;place-items:center;border:1px solid #cfe2f8;border-radius:8px;color:#0d74dc;background:#fff;box-shadow:0 12px 26px #2c5d8c1f;cursor:pointer}.reset-button:hover{border-color:#7cbcff;background:#f5fbff}.reset-button:disabled{color:#7891ab;background:#d7e6f4;box-shadow:none;cursor:not-allowed}.brand{display:flex;align-items:center;gap:12px}.brand-mark{display:grid;width:46px;height:46px;place-items:center;border-radius:8px;color:#fff;background:#1076df;box-shadow:0 12px 32px #1076df3d}.brand h1{margin:0;font-size:22px;line-height:1.1;letter-spacing:0}.brand p{margin:4px 0 0;color:#5d7693;font-size:13px}.panel-section{display:flex;flex-direction:column;gap:12px;padding-top:18px;border-top:1px solid #e1edf9}.section-title,.source-head,.bulk-actions,.topbar,.bottom-toolbar,.toggle-row,.select-row,.metric-row{display:flex;align-items:center}.section-title{justify-content:space-between;color:#163b63;font-size:14px;font-weight:700}.muted{color:#6f86a1;font-size:12px;font-weight:500}.icon-button,.tool-button{display:inline-grid;min-width:36px;height:36px;place-items:center;border:1px solid #cfe2f8;border-radius:8px;color:#1a5f9e;background:#fff;cursor:pointer}.icon-button:hover,.tool-button:hover,.mini-file:hover,.file-drop:hover{border-color:#7cbcff;background:#f5fbff}.file-drop{display:grid;grid-template-columns:20px minmax(0,1fr);gap:10px;align-items:center;min-height:54px;border:1px dashed #a9cff7;border-radius:8px;padding:12px;color:#245177;background:#f7fbff;cursor:pointer}.file-drop span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-drop input,.mini-file input{display:none}.metric-row{gap:10px}.metric{flex:1;min-width:0;border:1px solid #d8e8f8;border-radius:8px;padding:10px;background:#fff}.metric span,.source-item small{display:block;color:#6f86a1;font-size:12px}.metric strong{display:block;margin-top:4px;overflow-wrap:anywhere;font-size:13px}.source-list{gap:10px}.source-item{border:1px solid #d8e8f8;border-radius:8px;padding:12px;background:#fff}.source-head{gap:10px}.source-head>div{min-width:0;flex:1}.source-head strong{display:block;overflow:hidden;color:#15375a;font-size:14px;text-overflow:ellipsis;white-space:nowrap}.source-dot{width:10px;height:10px;border-radius:999px;flex:0 0 auto}.bulk-actions{gap:8px}.mini-file{display:inline-flex;align-items:center;justify-content:center;min-width:54px;min-height:34px;border:1px solid #cfe2f8;border-radius:8px;color:#1a5f9e;background:#f7fbff;font-size:13px;cursor:pointer}.mini-file.wide{flex:1}.helper-text{border:1px solid #d8e8f8;border-radius:8px;padding:12px;color:#607b96;background:#f7fbff;font-size:13px;line-height:1.45}.toggle-row,.select-row{justify-content:space-between;gap:14px;color:#234a70;font-size:14px}.toggle-row input{width:17px;height:17px;accent-color:#0d74dc}.toggle-row span{display:inline-flex;flex:1;align-items:center;gap:7px}.select-row select{width:128px;border:1px solid #cfe2f8;border-radius:8px;padding:8px 10px;color:#164062;background:#fff}.workspace{display:grid;grid-template-rows:72px minmax(0,1fr) 62px;min-width:0}.topbar{justify-content:space-between;gap:18px;border-bottom:1px solid #cfe2f8;padding:14px 22px;background:#ffffffc7;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.status-line{display:inline-flex;align-items:center;gap:8px;color:#245177;font-size:14px;font-weight:700}.primary-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-width:168px;min-height:42px;border-radius:8px;color:#fff;background:#0d74dc;box-shadow:0 12px 26px #0d74dc38;cursor:pointer}.primary-button:disabled{color:#7891ab;background:#d7e6f4;box-shadow:none;cursor:not-allowed}.board-stage{min-width:0;min-height:0;padding:22px}.board-scroll{width:100%;height:100%;overflow:auto;border:1px solid #cfe2f8;background:linear-gradient(#e6f1fc 1px,transparent 1px),linear-gradient(90deg,#e6f1fc 1px,transparent 1px),#f8fcff;background-size:24px 24px}.board-svg{display:block;margin:26px auto;border:1px solid #b9d6f2;background:#fff;box-shadow:0 22px 54px #2c5d8c2e}.empty-state{display:grid;height:100%;place-items:center;align-content:center;gap:12px;color:#7390ac}.bottom-toolbar{gap:10px;border-top:1px solid #cfe2f8;padding:12px 22px;background:#ffffffe0}.text-tool{display:inline-flex;gap:6px;padding:0 12px}.zoom-slider{width:170px;accent-color:#0d74dc}.toolbar-spacer{flex:1}.message{max-width:260px;overflow:hidden;color:#5d7693;font-size:13px;text-overflow:ellipsis;white-space:nowrap}.error-chip,.warning-chip{max-width:320px;overflow:hidden;border-radius:999px;padding:6px 10px;font-size:12px;text-overflow:ellipsis;white-space:nowrap}.error-chip{color:#9e1b1b;background:#ffe8e8}.warning-chip{color:#805100;background:#fff4d6}.spin{animation:spin .85s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:900px){.app-shell{grid-template-columns:1fr}.side-panel{max-height:none;border-right:0;border-bottom:1px solid #cfe2f8}.workspace{min-height:720px}.topbar,.bottom-toolbar{flex-wrap:wrap;height:auto}}