:root{font-family:Inter,PingFang SC,Microsoft YaHei,sans-serif;color:#17202a;background:#f5f7f8}body{margin:0}button,input{font:inherit}button,.primary-button{border:0;cursor:pointer}.app-shell{min-height:100vh;padding:24px;box-sizing:border-box}.login-screen{min-height:100vh;display:grid;place-items:center;padding:24px;box-sizing:border-box}.login-panel{width:min(380px,100%);display:grid;gap:16px;padding:28px;background:#fff;border:1px solid #d8dee4;border-radius:8px;box-sizing:border-box}.login-panel h1,.topbar h1{margin:0;font-size:24px;letter-spacing:0}label{display:grid;gap:6px;color:#425466}input{height:38px;border:1px solid #c8d1d9;border-radius:6px;padding:0 10px;color:#17202a;background:#fff;box-sizing:border-box}.primary-button{min-height:40px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 14px;border-radius:6px;color:#fff;background:#1d6f7a;text-decoration:none;box-sizing:border-box}.error-text{margin:0;color:#b42318}.topbar,.upload-row{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.topbar p{margin:6px 0 0;color:#5d6b78}.icon-button{width:40px;height:40px;display:inline-grid;place-items:center;flex:0 0 40px;border-radius:6px;background:#e8eef2;color:#17202a}.upload-row{justify-content:flex-start}.upload-row input[type=text],.upload-row>input{width:min(360px,100%)}.file-button input{display:none}.table-wrap{overflow-x:auto;background:#fff;border:1px solid #d8dee4;border-radius:8px}table{width:100%;min-width:860px;border-collapse:collapse}th,td{padding:12px 14px;border-bottom:1px solid #e6eaee;text-align:left;white-space:nowrap}th{color:#5d6b78;font-weight:600;background:#f9fbfc}.status-pill{display:inline-flex;align-items:center;min-height:26px;padding:0 10px;border-radius:999px;color:#1d3f45;background:#dff3f0}.row-actions{display:flex;align-items:center;gap:10px}.row-actions button{height:32px;padding:0 10px;border-radius:6px;color:#17202a;background:#e8eef2}.row-actions a{width:32px;height:32px;display:inline-grid;place-items:center;color:#17202a;background:#e8eef2;border-radius:6px}.workbench{min-height:100vh;padding:16px;box-sizing:border-box}.workbench-topbar{justify-content:flex-start}.workbench-title{min-width:0;flex:1}.workbench-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:16px;align-items:start}.pdf-viewer{min-height:calc(100vh - 110px);overflow:auto;display:grid;justify-items:center;padding:16px;background:#dfe5e8;border-radius:8px;box-sizing:border-box}.pdf-viewer canvas{max-width:100%;background:#fff;box-shadow:0 8px 24px #17202a2e}.signoff-panel{display:grid;gap:16px;padding:16px;background:#fff;border:1px solid #d8dee4;border-radius:8px;box-sizing:border-box}.signoff-panel h2{margin:0 0 8px;font-size:16px}.signoff-panel p{margin:0;color:#5d6b78}.role-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}.role-list li{display:grid;gap:4px;padding-bottom:10px;border-bottom:1px solid #e6eaee}.role-list span{color:#5d6b78}button:disabled,.primary-button:disabled{cursor:not-allowed;opacity:.48}.dialog-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;padding:24px;background:#17202a6b;box-sizing:border-box}.signature-dialog{width:min(620px,100%);display:grid;gap:14px;padding:18px;background:#fff;border-radius:8px;box-sizing:border-box}.signature-dialog h2{margin:0}.signature-canvas{width:100%;height:220px;border:1px dashed #8a99a8;border-radius:6px;background:#fff;touch-action:none}.dialog-actions{display:flex;justify-content:flex-end;gap:10px}.dialog-actions button:not(.primary-button){min-height:38px;padding:0 12px;border-radius:6px;background:#e8eef2;color:#17202a}@media (max-width: 900px){.workbench-layout{grid-template-columns:1fr}.signoff-panel{order:-1}.topbar,.upload-row{align-items:stretch;flex-wrap:wrap}}