:root{--ink:#172033;--muted:#657084;--line:#dde2e9;--soft:#f5f6f8;--panel:#ffffff;--nav:#202933;--accent:#0f766e;--accent-soft:#e6f4f1;--amber:#b45309;--danger:#b42318}*{box-sizing:border-box}body,html{background:var(--soft)}body{margin:0;color:var(--ink);font-family:Arial,PingFang SC,Microsoft YaHei,sans-serif;letter-spacing:0}button,input,select,textarea{font:inherit}a,button{-webkit-tap-highlight-color:transparent}.app-shell{min-height:100vh;display:grid;grid-template-columns:232px minmax(0,1fr)}.sidebar{position:-webkit-sticky;position:sticky;top:0;height:100vh;padding:24px 16px;color:#d7dde5;background:var(--nav)}.brand{display:flex;gap:12px;align-items:center;padding:0 8px 24px;border-bottom:1px solid #39424d}.brand-mark{width:34px;height:34px;display:grid;place-items:center;border-radius:6px;background:#e9b949;color:#202933;font-weight:800}.brand strong{display:block;color:#fff;font-size:15px}.brand 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table{min-width:720px}.document-summary,.party-grid{grid-template-columns:1fr}.party-editor+.party-editor{padding-left:0;padding-top:20px;border-left:0;border-top:1px solid var(--line)}.summary-inputs{grid-template-columns:1fr 1fr 1fr}.segmented{width:100%;grid-template-columns:repeat(3,1fr)}.segmented button{padding:0 6px}.doc-preview{padding:20px 16px}.doc-parties,.doc-preview-head{display:grid;grid-template-columns:1fr}.doc-preview-no{text-align:left}.export-dialog-actions{display:grid;grid-template-columns:1fr}}