:root{--primary: #1a56db;--primary-light: #e8f0fe;--success: #0e9f6e;--success-light: #def7ec;--danger: #e02424;--danger-light: #fde8e8;--warn: #c27803;--warn-light: #fdf6b2;--gray: #6b7280;--gray-light: #f3f4f6;--border: #e5e7eb;--text: #111827;--text-sm: #374151;--radius: 10px;--shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);--shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;background:#f0f4ff;color:var(--text);min-height:100vh;overflow-x:hidden}.app-container{min-height:100vh}.header{background:linear-gradient(135deg,#1a56db,#1e40af);color:#fff;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:60px;box-shadow:0 2px 8px #1a56db4d}.header-logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:.5px}.header-logo svg{opacity:.9}.header-nav 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