/* ========== 全局变量和基础样式 ========== */
        :root {
            --primary: #4361ee;
            --primary-light: #eef2ff;
            --secondary: #3f37c9;
            --success: #4cc9f0;
            --warning: #f72585;
            --danger: #e63946;
            --dark: #1d3557;
            --darker: #0f172a;
            --light: #f8f9fa;
            --gray: #6c757d;
            --white: #ffffff;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --gray-light: #e2e8f0;
            --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            --border-radius: 12px;
            --transition: all 0.3s ease;
            --menu-hover: rgba(255, 255, 255, 0.1);
            --accent: #4895ef;
            --light-gray: #e9ecef;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            color: #333;
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        
        .container {
            width: 90%;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 15px;
        }
        a {text-decoration: none;}
 /* ========== 头部导航 ========== */
 header {
     background: var(--white);
     color: var(--darker);
     box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
     position: sticky;
     top: 0;
     z-index: 1000;
     border-bottom: 1px solid var(--gray-light);
 }

 .header-container {
     display: flex;
     justify-content: space-between;
     align-items: center;
     padding: 0 20px;
     height: 70px;
     position: relative;
 }

 .logo {
     display: flex;
     align-items: center;
     gap: 15px;
     text-decoration: none;
 }

 .logo-icon {
     font-size: 1.8rem;
     color: var(--primary);
     display: flex;
     align-items: center;
     justify-content: center;
     width: 40px;
     height: 40px;
     background: var(--primary-light);
     border-radius: 10px;
 }

 .logo-text {
     display: flex;
     flex-direction: column;
 }

 .logo-title {
     font-size: 1.4rem;
     font-weight: 700;
     line-height: 1.2;
     color: var(--darker);
 }

 .logo-title span {
     color: var(--primary);
 }

 .logo-subtitle {
     font-size: 0.75rem;
     opacity: 0.8;
     letter-spacing: 0.5px;
     color: var(--gray);
 }

 .main-nav {
     display: flex;
     height: 100%;
 }

 .nav-list {
     display: flex;
     list-style: none;
     height: 100%;
     margin: 0;
     padding: 0;
 }

 .nav-item {
     height: 100%;
     display: flex;
     align-items: center;
     position: relative;
 }

 .nav-link {
     color: var(--gray);
     text-decoration: none;
     font-weight: 500;
     padding: 0 20px;
     height: 100%;
     display: flex;
     align-items: center;
     transition: var(--transition);
     position: relative;
     font-size: 0.95rem;
 }

 .nav-link:hover {
     color: var(--primary);
     background: var(--menu-hover);
 }

 .nav-link.active {
     color: var(--primary);
     background: var(--menu-hover);
 }

 .nav-link.active::after {
     content: '';
     position: absolute;
     bottom: 0;
     left: 0;
     right: 0;
     height: 4px;
     background: var(--primary);
     border-radius: 2px 2px 0 0;
 }

 .nav-icon {
     margin-right: 8px;
     font-size: 1.1rem;
     color: var(--primary);
 }

 .user-actions {
     display: flex;
     align-items: center;
     gap: 15px;
 }

 .user-btn {
     background: var(--primary-light);
     color: var(--primary);
     border: none;
     border-radius: 30px;
     padding: 8px 18px;
     font-size: 0.9rem;
     cursor: pointer;
     transition: var(--transition);
     display: flex;
     align-items: center;
     gap: 8px;
     font-weight: 500;
 }

 .user-btn:hover {
     background: var(--primary);
     color: var(--white);
     box-shadow: 0 5px 15px rgba(67, 97, 238, 0.2);
 }

 .mobile-menu-btn {
     display: none;
     background: none;
     border: none;
     color: var(--darker);
     font-size: 1.5rem;
     cursor: pointer;
     z-index: 1001;
 }

 /* ========== 移动端导航菜单 ========== */
 .mobile-nav-container {
     display: none;
     position: fixed;
     top: 70px;
     left: 0;
     right: 0;
     bottom: 0;
     background: var(--white);
     z-index: 999;
     overflow-y: auto;
     transform: translateX(-100%);
     transition: transform 0.3s ease-out;
     box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
 }

 .mobile-nav-container.active {
     display: block;
     transform: translateX(0);
 }

 .mobile-nav-list {
     list-style: none;
     padding: 20px 0;
 }

 .mobile-nav-item {
     border-bottom: 1px solid var(--gray-light);
 }

 .mobile-nav-link {
     display: flex;
     align-items: center;
     padding: 18px 25px;
     color: var(--darker);
     text-decoration: none;
     font-weight: 500;
     font-size: 1.1rem;
     transition: var(--transition);
 }

 .mobile-nav-link:hover,
 .mobile-nav-link.active {
     background: var(--menu-hover);
     color: var(--primary);
 }

 .mobile-nav-link i {
     font-size: 1.3rem;
     width: 30px;
     margin-right: 15px;
     color: var(--primary);
 }

 .mobile-user-actions {
     display: flex;
     flex-direction: row;
     padding: 25px;
     gap: 15px;
 }

 .mobile-user-btn {
     background: var(--primary-light);
     color: var(--primary);
     border: none;
     border-radius: 8px;
     padding: 15px;
     font-size: 1rem;
     cursor: pointer;
     transition: var(--transition);
     display: flex;
     align-items: center;
     justify-content: center;
     gap: 10px;
     font-weight: 500;
 }

 .mobile-user-btn:hover {
     background: var(--primary);
     color: var(--white);
 }


 .user-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        /* ========== 通用组件 ========== */
        .page-title {
            text-align: center;
            padding: 40px 0 20px;
        }
        
        .page-title h1 {
            font-size: 2.5rem;
            color: var(--dark);
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 15px;
        }
        
        .page-title p {
            font-size: 1.1rem;
            color: var(--gray);
            max-width: 800px;
            margin: 0 auto;
        }
        
        .section {
            margin: 40px 0;
        }
        
        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
        }
        
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--darker);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .section-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .section-link:hover {
            text-decoration: underline;
        }
        
        .btn {
            display: inline-block;
            background: var(--primary);
            color: white;
            padding: 12px 25px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            font-size: 1rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .btn:hover {
            background: var(--secondary);
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(67, 97, 238, 0.3);
        }
        
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        
        .btn-outline:hover {
            background: var(--primary);
            color: white;
        }
        
        .card {
            background: white;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }
        
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.1);
        }


/* ========== 页脚样式 ========== */
footer {
	background: var(--darker);
	color: white;
	padding: 60px 0 30px;
	margin-top: auto;
}

.footer-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
	gap: 40px;
	margin-bottom: 40px;
}

.footer-column h3 {
	font-size: 1.2rem;
	margin-bottom: 20px;
	color: var(--success);
}

.footer-links {
	list-style: none;
}

.footer-links li {
	margin-bottom: 15px;
}

.footer-links a {
	color: #94a3b8;
	text-decoration: none;
	transition: var(--transition);
	display: flex;
	align-items: center;
	gap: 10px;
}

.footer-links a:hover {
	color: white;
}

.footer-about {
	color: #94a3b8;
	line-height: 1.8;
}

.footer-social {
	display: flex;
	gap: 15px;
	margin-top: 20px;
}

.social-link {
	width: 40px;
	height: 40px;
	border-radius: 50%;
	background: rgba(255, 255, 255, 0.08);
	display: flex;
	align-items: center;
	justify-content: center;
	color: white;
	transition: var(--transition);
}

.social-link:hover {
	background: var(--primary);
	transform: translateY(-3px);
}

.copyright {
	text-align: center;
	padding-top: 30px;
	border-top: 1px solid #1e293b;
	color: #64748b;
	font-size: 0.9rem;
}

/* ========== 响应式设计 ========== */
@media (max-width: 1200px) {
	.comparison-header, .comparison-body {
		grid-template-columns: 200px repeat(3, 1fr);
	}
	
	.gpu-table th, .gpu-table td {
		padding: 12px 15px;
	}
}

@media (max-width: 992px) {
	.comparison-header, .comparison-body {
		grid-template-columns: 200px repeat(2, 1fr);
	}

	
	.charts-grid {
		grid-template-columns: 1fr;
	}
	
	.mobile-menu-btn {
		display: block;
	}
	
	.main-nav {
		display: none;
	}
	
	.nav-list {
		flex-direction: column;
		height: auto;
	}
	
	.nav-item {
		height: auto;
	}
	
	.nav-link {
		padding: 15px 20px;
	}
	
	.comparison-controls {
		flex-direction: column;
		gap: 20px;
	}
	
	.comparison-bar {
		flex-direction: column;
		gap: 15px;
		align-items: flex-start;
	}
	
	.comparison-actions {
		width: 100%;
		justify-content: flex-end;
	}
}

@media (max-width: 768px) {
	.comparison-header, .comparison-body {
		grid-template-columns: 150px repeat(1, 1fr);
	}


	.comparison-header {
		grid-template-columns: 150px 1fr;
	}
	
	.filters-container {
		flex-direction: column;
	}
	
	.filter-group {
		min-width: 100%;
	}
	
	.products-grid {
		grid-template-columns: 1fr;
	}
	
	.ranking-container {
		grid-template-columns: 1fr;
	}
	
	.banner-buttons {
		flex-direction: column;
	}
    .user-actions {
        display: none;
    }

    /* 修复：在移动端隐藏Logo文字 */
    .logo-title {
        font-size:1.1rem
    }
    .logo-subtitle {
        display:none;
    }

}