:root{--bg: #f5f7fa;--surface: #ffffff;--border: #e3e8ef;--text: #16202e;--muted: #667085;--brand: #0f766e;--brand-dark: #115e56;--danger: #b42318;--ok: #067647;--radius: 10px;--sidebar-w: 220px;--topbar-h: 56px;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-size:15px;overflow-x:hidden}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}.shell{min-height:100vh}.topbar{position:sticky;top:0;z-index:30;height:var(--topbar-h);display:flex;align-items:center;gap:12px;padding:0 14px;background:#0b1220;color:#fff}.topbar h1{font-size:15px;margin:0;letter-spacing:.5px;font-weight:600}.hamburger{background:transparent;border:1px solid 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