:root{color-scheme:dark;--primary: #2563eb;--primary-hover: #1d4ed8;--accent-text: #8ab4f8;--accent-soft: rgba(37, 99, 235, .18);--accent2-text: #a5b4fc;--accent2-soft: rgba(99, 102, 241, .16);--focus-ring: #8ab4f8;--page-bg: #12161c;--chrome-bg: #181e27;--panel-bg: #1e2632;--panel-alt: #232c3a;--input-bg: #151c26;--btn-bg: #222b38;--btn-bg-hover: #2c3747;--selected-bg: var(--accent-soft);--backdrop: rgba(4, 8, 14, .62);--toast-bg: #2a3444;--text-main: #e6edf5;--text-muted: #a7b3c3;--text-placeholder: #7e8c9e;--border: #344154;--border-strong: #4a5a70;--input-border: #4a5a70;--success: #4ade80;--success-bg: rgba(74, 222, 128, .1);--success-solid: #15803d;--warning: #e3b341;--warning-bg: rgba(227, 179, 65, .1);--danger: #f87171;--danger-bg: rgba(248, 113, 113, .1);--danger-solid: #b91c1c;--danger-solid-hover: #dc2626;--radius-ctl: 6px;--radius-panel: 8px;--shadow-drawer: 0 8px 30px rgba(0, 0, 0, .55);--shadow-dialog: 0 12px 40px rgba(0, 0, 0, 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var(--border);border-radius:var(--radius-ctl);cursor:pointer}code{font-family:ui-monospace,Consolas,monospace;font-size:12px;color:var(--text-muted);background:var(--input-bg);padding:1px 6px;border-radius:4px}.login-view{min-height:100vh;display:grid;place-items:center;background:var(--page-bg);padding:24px}.login-card{width:min(400px,100%);background:var(--panel-bg);border:1px solid var(--border);border-radius:var(--radius-panel);padding:32px}.login-card .brand{margin:0 0 6px;color:var(--accent-text);font-weight:700}.login-card h1{margin:0 0 12px;font-size:24px}.muted{color:var(--text-muted);font-size:13px;margin:0 0 16px}.login-card form{display:grid;gap:8px}.login-card label{margin-top:8px;font-weight:600;font-size:13px;display:grid;gap:6px}.login-card input{height:38px;padding:0 12px;width:100%}.login-card button[type=submit]{margin-top:16px;height:40px;width:100%;background:var(--primary);color:#fff;border:0;border-radius:var(--radius-ctl);font-weight:600}.login-card 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8px;border-radius:var(--radius-ctl)}.ghost-btn:hover{color:var(--text-main);background:var(--panel-alt)}.layout{flex:1 1 auto;display:flex;min-height:0}.sidebar{width:200px;flex:0 0 auto;overflow:auto;background:var(--chrome-bg);border-right:1px solid var(--border);padding:12px 8px}.nav-section{margin:12px 0 0;padding-top:6px;border-top:1px solid var(--border)}.sidebar>.nav-section:first-child{margin-top:0;padding-top:0;border-top:0}.nav-group{position:relative;display:block;width:100%;text-align:left;margin:0;padding:4px 22px 4px 10px;border:0;background:transparent;cursor:pointer;color:var(--text-muted);font-size:12px;font-weight:600;letter-spacing:.06em}.nav-group:hover{color:var(--text-main)}.nav-group:after{content:"";position:absolute;right:10px;top:50%;margin-top:-4px;width:0;height:0;border-left:5px solid currentColor;border-top:4px solid transparent;border-bottom:4px solid transparent;transition:transform .15s 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var(--border);border-radius:var(--radius-ctl);color:var(--text-muted);font-family:ui-monospace,Consolas,monospace;font-size:12px;white-space:pre-wrap;word-break:break-word}.workspace{display:flex;gap:0;background:var(--panel-bg);border:1px solid var(--border);border-radius:var(--radius-panel);min-height:420px;overflow:hidden;max-width:100%}.tree-pane{width:280px;flex:0 0 auto;border-right:1px solid var(--border);padding:14px;display:flex;flex-direction:column;gap:10px;overflow:auto}.tree{margin:0;padding:0;list-style:none}.tree-node{margin:1px 0}.tree-row{display:flex;align-items:center;gap:8px;width:100%;text-align:left;padding:7px 8px;border:0;border-radius:var(--radius-ctl);background:transparent;color:var(--text-main);cursor:pointer;height:auto;font-weight:400}.tree-row:hover{background:var(--panel-alt)}.tree-row.selected{background:var(--accent-soft);color:var(--accent-text);font-weight:600}.tree-label{flex:1 1 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