:root{color-scheme:light;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,sans-serif;color:#232827;background:#e5e6e2;font-synthesis:none;--header-height: 64px;--footer-height: 30px;--panel-width: 326px;--border: #d3d4cf;--muted: #6e7471;--paper: #f7f6f2;--accent: #c47a2d}*{box-sizing:border-box}html,body,#app{width:100%;height:100%;margin:0;overflow:hidden}button,a,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible+.toggle{outline:2px solid #b7661e;outline-offset:2px}.app-header{position:relative;z-index:20;height:var(--header-height);display:grid;grid-template-columns:minmax(230px,1fr) auto minmax(230px,1fr);align-items:center;gap:24px;padding:0 16px;background:var(--paper);border-bottom:1px solid var(--border)}.brand,.header-actions,.panel-heading,.info-panel-header,.section-title-row,.status-bar>div,.source-note,.view-hint{display:flex;align-items:center}.brand{gap:11px;min-width:0}.brand-mark{width:34px;height:34px;display:grid;place-items:center;flex:0 0 34px;background:#272d2c;color:#fff;font-size:11px;font-weight:760;letter-spacing:0}.brand-copy{display:grid;gap:2px;min-width:0}.brand-copy strong{font-size:14px;line-height:1.25}.brand-copy span{overflow:hidden;color:var(--muted);font-size:11px;line-height:1.2;text-overflow:ellipsis;white-space:nowrap}.scheme-switcher{display:grid;grid-template-columns:repeat(3,minmax(78px,96px));padding:3px;background:#e9e9e4;border:1px solid #dcddd7;border-radius:6px}.scheme-switcher button{height:32px;border:0;border-radius:4px;background:transparent;color:#676d69;font-size:12px;cursor:pointer}.scheme-switcher button:hover{color:#252b29}.scheme-switcher button.is-active{background:#fff;color:#202624;font-weight:670;box-shadow:0 1px 3px #1f25231f}.header-actions{justify-content:flex-end;gap:4px}.icon-button{position:relative;width:36px;height:36px;display:inline-grid;place-items:center;padding:0;border:1px solid transparent;border-radius:5px;background:transparent;color:#444b48;text-decoration:none;cursor:pointer}.icon-button:hover{border-color:#d5d6d1;background:#ecece7;color:#1e2422}.icon-button svg{width:17px;height:17px;stroke-width:1.8}[data-tooltip]:after{content:attr(data-tooltip);position:absolute;top:calc(100% + 7px);left:50%;z-index:50;transform:translate(-50%);width:max-content;max-width:160px;padding:5px 7px;border-radius:3px;background:#222725;color:#fff;font-size:11px;pointer-events:none;opacity:0;transition:opacity .12s ease}[data-tooltip]:hover:after{opacity:1}.workspace{height:calc(100% - 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