:root{--bg: #f5f5f7;--surface: #ffffff;--border: #d2d2d7;--border-light: #e8e8ed;--text: #1d1d1f;--text-secondary: #86868b;--text-tertiary: #aeaeb2;--primary: #007aff;--primary-hover: #0066d6;--primary-light: #f0f5ff;--primary-bg: rgba(0, 122, 255, .06);--success: #34c759;--success-dark: #248a3d;--success-light: #f0faf2;--danger: #ff3b30;--danger-dark: #d70015;--danger-light: #fff5f5;--warning: #ff9500;--warning-dark: #c93400;--warning-light: #fff9f0;--info: #5ac8fa;--info-light: #f0faff;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .04);--shadow: 0 2px 8px rgba(0, 0, 0, .06);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 40px rgba(0, 0, 0, .12);--radius-sm: 8px;--radius: 10px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 22px;--transition: .2s ease;--transition-slow: .3s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,SF Pro Text,Helvetica 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1.5rem;display:flex;align-items:center;gap:0;height:52px}.nav-brand{font-weight:600;font-size:1rem;color:var(--text);text-decoration:none;display:flex;align-items:center;gap:.5rem;letter-spacing:-.02em;margin-right:2rem;white-space:nowrap;transition:opacity var(--transition)}.nav-brand:hover{opacity:.7}.nav-links{display:flex;gap:0;height:100%;align-items:stretch}.nav-links a{color:var(--text-secondary);text-decoration:none;font-size:.85rem;font-weight:400;padding:0 .85rem;display:flex;align-items:center;position:relative;transition:color var(--transition);border-bottom:2px solid transparent}.nav-links a:hover{color:var(--text)}.nav-links a.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:500}.nav-right{margin-left:auto;display:flex;align-items:center;gap:.75rem}.nav-user{display:flex;align-items:center;gap:.6rem}.nav-avatar{width:30px;height:30px;border-radius:50%;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:.72rem}.nav-username{font-size:.85rem;font-weight:500;color:var(--text)}.nav-link-badge{position:relative}.nav-link-badge .badge-count{position:absolute;top:10px;right:2px;min-width:16px;height:16px;border-radius:8px;background:var(--danger);color:#fff;font-size:.6rem;font-weight:600;display:flex;align-items:center;justify-content:center;padding:0 4px;line-height:1}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:.75rem;margin-bottom:1.75rem}.stat-card{background:var(--surface);border-radius:var(--radius-md);padding:1.15rem 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p{font-size:.85rem;color:var(--text-secondary);max-width:300px}.toast-container{position:fixed;top:1rem;right:1rem;z-index:2000;display:flex;flex-direction:column;gap:.5rem}.toast{padding:.7rem 1.15rem;border-radius:var(--radius-md);font-size:.85rem;font-weight:500;box-shadow:var(--shadow-lg);animation:toastIn .25s ease-out;display:flex;align-items:center;gap:.5rem;min-width:260px;max-width:380px}.toast-success{background:var(--success-dark);color:#fff}.toast-error{background:var(--danger);color:#fff}.toast-info{background:var(--primary);color:#fff}.toast-exit{animation:toastOut .2s ease-in forwards}@keyframes toastIn{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}@keyframes toastOut{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(100%)}}.loading-spinner{width:28px;height:28px;border:2.5px solid var(--border-light);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear 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