:root{--bg: #f4f6fb;--surface: #ffffff;--text: #1c2333;--muted: #6b7488;--border: #e3e7ef;--primary: #4f46e5;--primary-dark: #4338ca;--sidebar: #161a2b;--sidebar-text: #c7ccdb;--ok: #16a34a;--warn: #d97706;--danger: #dc2626;--radius: 12px;--shadow: 0 1px 3px rgba(20, 25, 45, .08), 0 8px 24px rgba(20, 25, 45, .05)}*{box-sizing:border-box}body{margin:0;font-family:Inter,Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);font-size:14px}a{color:inherit}.centered{display:grid;place-items:center;height:100vh;color:var(--muted)}.app-shell{display:flex;min-height:100vh}.sidebar{width:230px;background:var(--sidebar);color:var(--sidebar-text);display:flex;flex-direction:column;transition:width .18s ease;position:sticky;top:0;height:100vh}.collapsed .sidebar{width:64px}.sidebar-top{display:flex;align-items:center;gap:10px;padding:18px 16px;border-bottom:1px solid 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