/* ===== 404页面独享样式 ===== */
        .error-section {
            padding: 150px 0 80px;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            position: relative;
            overflow: hidden;
            min-height: 100vh;
            display: flex;
            align-items: center;
        }
        
        .error-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: var(--accent);
            border-radius: 50%;
            opacity: 0.1;
        }
        
        .error-content {
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
            opacity: 0;
            transform: translateY(30px);
            transition: var(--transition);
        }
        
        .error-content.animate {
            opacity: 1;
            transform: translateY(0);
        }
        
        .error-number {
            font-size: 15rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 20px;
            position: relative;
            display: inline-block;
            animation: numberPulse 3s infinite;
        }
        
        @keyframes numberPulse {
            0% {
                transform: scale(1);
                text-shadow: 0 0 0 rgba(10, 36, 99, 0.4);
            }
            50% {
                transform: scale(1.05);
                text-shadow: 0 10px 30px rgba(10, 36, 99, 0.2);
            }
            100% {
                transform: scale(1);
                text-shadow: 0 0 0 rgba(10, 36, 99, 0.4);
            }
        }
        
        .error-number::before {
            content: '';
            position: absolute;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            bottom: -10px;
            left: 0;
            border-radius: 5px;
        }
        
        .error-title {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 20px;
        }
        
        .error-text {
            font-size: 1.2rem;
            color: var(--gray);
            margin-bottom: 40px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .error-actions {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 50px;
        }
        
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        
        .btn-outline::before {
            background: var(--primary);
        }
        
        .btn-outline:hover {
            color: white;
        }
        
        .error-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-top: 60px;
        }
        
        .error-feature {
            background: white;
            padding: 30px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
            opacity: 0;
            transform: translateY(30px);
        }
        
        .error-feature.animate {
            opacity: 1;
            transform: translateY(0);
        }
        
        .error-feature:nth-child(1) { transition-delay: 0.1s; }
        .error-feature:nth-child(2) { transition-delay: 0.2s; }
        .error-feature:nth-child(3) { transition-delay: 0.3s; }
        
        .error-feature:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        }
        
        .feature-icon {
            font-size: 3rem;
            color: var(--primary);
            margin-bottom: 20px;
            display: inline-block;
            animation: iconFloat 6s infinite ease-in-out;
        }
        
        @keyframes iconFloat {
            0% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-10px);
            }
            100% {
                transform: translateY(0);
            }
        }
        
        .error-feature h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--primary);
        }
        
        .error-feature p {
            color: var(--gray);
        }
        
        /* 几何动画图形 */
        .error-shapes {
            position: absolute;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            z-index: 1;
            overflow: hidden;
        }
        
        .error-shape {
            position: absolute;
            opacity: 0.1;
            animation: float 15s infinite linear;
        }
        
        .error-shape-1 {
            width: 150px;
            height: 150px;
            background: var(--primary);
            border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
            top: 10%;
            left: 10%;
            animation-duration: 20s;
        }
        
        .error-shape-2 {
            width: 100px;
            height: 100px;
            background: var(--secondary);
            clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
            top: 60%;
            left: 15%;
            animation-duration: 25s;
        }
        
        .error-shape-3 {
            width: 120px;
            height: 120px;
            background: var(--accent);
            border-radius: 50%;
            top: 30%;
            right: 15%;
            animation-duration: 18s;
        }
        
        .error-shape-4 {
            width: 80px;
            height: 80px;
            background: var(--primary);
            clip-path: polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%);
            transform: rotate(45deg);
            top: 70%;
            right: 20%;
            animation-duration: 22s;
        }
        
        @keyframes float {
            0% {
                transform: translate(0, 0) rotate(0deg);
            }
            25% {
                transform: translate(20px, 20px) rotate(90deg);
            }
            50% {
                transform: translate(0, 40px) rotate(180deg);
            }
            75% {
                transform: translate(-20px, 20px) rotate(270deg);
            }
            100% {
                transform: translate(0, 0) rotate(360deg);
            }
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            .error-number {
                font-size: 12rem;
            }
            
            .error-title {
                font-size: 2.2rem;
            }
        }
        
        @media (max-width: 992px) {
            .error-number {
                font-size: 10rem;
            }
            
            .error-title {
                font-size: 2rem;
            }
            
            .error-text {
                font-size: 1.1rem;
            }
        }
        
        @media (max-width: 768px) {
            .error-section {
                padding: 130px 0 60px;
            }
            
            .error-number {
                font-size: 8rem;
            }
            
            .error-title {
                font-size: 1.8rem;
            }
            
            .error-actions {
                flex-direction: column;
                align-items: center;
            }
            
            .btn {
                width: 100%;
                max-width: 300px;
                text-align: center;
            }
            
            .error-features {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 576px) {
            .error-number {
                font-size: 6rem;
            }
            
            .error-title {
                font-size: 1.5rem;
            }
            
            .error-text {
                font-size: 1rem;
            }
            
            .error-feature {
                padding: 20px;
            }
        }