/* ===== 404页面样式 ===== */
        .error-section {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--light) 0%, #f0f0f0 100%);
            position: relative;
            overflow: hidden;
        }

        .error-container {
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
            padding: 60px 40px;
            background: white;
            border-radius: 0;
            box-shadow: var(--shadow);
            position: relative;
            z-index: 2;
            border: 1px solid rgba(0, 0, 0, 0.05);
            animation: fadeInUp 1s ease-out;
        }

        .error-icon {
            font-size: 8rem;
            color: var(--primary);
            margin-bottom: 40px;
            animation: bounce 2s infinite;
        }

        .error-title {
            font-size: 6rem;
            font-weight: 900;
            color: var(--dark);
            margin-bottom: 20px;
            line-height: 1;
        }

        .error-subtitle {
            font-size: 2rem;
            color: var(--dark);
            margin-bottom: 30px;
            font-weight: 700;
        }

        .error-description {
            font-size: 1.3rem;
            color: var(--gray);
            margin-bottom: 50px;
            line-height: 1.6;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .error-actions {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 40px;
        }

        .btn-secondary {
            background: transparent;
            color: var(--dark);
            border: 2px solid var(--dark);
        }

        .btn-secondary:hover {
            background: var(--dark);
            color: white;
        }

        .error-search {
            max-width: 500px;
            margin: 40px auto 0;
            position: relative;
        }

        .error-search input {
            width: 100%;
            padding: 16px 20px;
            border: 2px solid rgba(0, 0, 0, 0.1);
            border-radius: 0;
            font-size: 1rem;
            transition: var(--transition);
        }

        .error-search input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.1);
        }

        .error-search button {
            position: absolute;
            right: 5px;
            top: 5px;
            background: var(--primary);
            color: white;
            border: none;
            padding: 11px 25px;
            cursor: pointer;
            transition: var(--transition);
        }

        .error-search button:hover {
            background: var(--secondary);
        }

        /* 动画效果 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% {
                transform: translateY(0);
            }
            40% {
                transform: translateY(-20px);
            }
            60% {
                transform: translateY(-10px);
            }
        }

        /* 浮动元素 */
        .floating-element {
            position: absolute;
            z-index: 1;
            pointer-events: none;
        }

        .float-1 {
            top: 20%;
            left: 10%;
            width: 100px;
            height: 100px;
            background: var(--primary);
            opacity: 0.1;
            border-radius: 50%;
            animation: float 6s ease-in-out infinite;
        }

        .float-2 {
            bottom: 30%;
            right: 15%;
            width: 150px;
            height: 150px;
            background: var(--secondary);
            opacity: 0.08;
            border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
            animation: float 8s ease-in-out infinite reverse;
        }

        .float-3 {
            top: 60%;
            left: 20%;
            width: 80px;
            height: 80px;
            background: var(--accent);
            opacity: 0.1;
            border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
            animation: float 10s ease-in-out infinite;
        }

        @keyframes float {
            0%, 100% {
                transform: translateY(0) rotate(0deg);
            }
            33% {
                transform: translateY(-20px) rotate(120deg);
            }
            66% {
                transform: translateY(10px) rotate(240deg);
            }
        }

        /* ===== 响应式设计 ===== */
        @media (max-width: 768px) {
            .error-container {
                padding: 40px 30px;
            }
            
            .error-icon {
                font-size: 6rem;
            }
            
            .error-title {
                font-size: 4rem;
            }
            
            .error-subtitle {
                font-size: 1.5rem;
            }
            
            .error-description {
                font-size: 1.1rem;
            }
            
            .error-actions {
                flex-direction: column;
                align-items: center;
            }
            
            .error-actions .btn {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }
        }

        @media (max-width: 576px) {
            .error-container {
                padding: 30px 20px;
            }
            
            .error-icon {
                font-size: 5rem;
            }
            
            .error-title {
                font-size: 3.5rem;
            }
            
            .error-subtitle {
                font-size: 1.3rem;
            }
        }