:root {
    --primary-color: #1890ff;
    --primary-dark: #096dd9;
    --primary-light: #e6f7ff;
    --tech-blue: #1890ff;
    --tech-dark: #0d1b2a;
    --tech-gray: #f5f7fa;
    --tech-light: #ffffff;
    --accent-color: #722ed1;
    --text-primary: #262626;
    --text-secondary: #595959;
    --text-light: #8c8c8c;
    --border-color: #f0f0f0;
    --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.08);
    --gradient-tech: linear-gradient(135deg, #1890ff 0%, #722ed1 100%);
    --gradient-subtle: linear-gradient(135deg, #f5f7fa 0%, #e6f7ff 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: var(--tech-gray);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.tech-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* 头部样式 */
.tech-header {
    background: var(--tech-light);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: var(--shadow-light);
    border-bottom: 1px solid var(--border-color);
}

.tech-navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.tech-logo {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 20px;
    color: var(--tech-blue);
    text-decoration: none;
}

.tech-logo i {
    margin-right: 8px;
    font-size: 24px;
    color: var(--tech-blue);
}

.tech-contact-btn {
    background: var(--gradient-tech);
    color: white;
    border: none;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(24, 144, 255, 0.3);
}

.tech-contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(24, 144, 255, 0.4);
}

/* 英雄区域 */
.tech-hero {
    background: linear-gradient(135deg, var(--tech-dark) 0%, #1a3352 100%);
    color: white;
    padding: 120px 0 80px;
    margin-top: 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.tech-hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><path d="M0,0 L100,0 L100,100 Z" fill="rgba(255,255,255,0.03)"/></svg>');
    background-size: 100px 100px;
    opacity: 0.2;
}

.tech-hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(90deg, #ffffff 0%, #a3d4ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tech-hero p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.85);
    max-width: 700px;
    margin: 0 auto 32px;
}

/* 主要内容区域 */
.tech-main {
    padding: 60px 0;
    background: var(--tech-gray);
}

.tech-section {
    background: var(--tech-light);
    border-radius: 12px;
    padding: 40px 32px;
    margin-bottom: 32px;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.tech-section:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
}

.tech-section-title {
    display: flex;
    align-items: center;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--primary-light);
}

.tech-section-title i {
    background: var(--gradient-tech);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 28px;
    margin-right: 16px;
}

.tech-section-title h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* 服务卡片 */
.tech-service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 24px;
}

.tech-service-card {
    background: var(--tech-light);
    border-radius: 10px;
    padding: 24px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    text-align: center;
    /* 添加居中对齐 */
}

.tech-service-card:hover {
    border-color: var(--tech-blue);
    box-shadow: 0 8px 24px rgba(24, 144, 255, 0.1);
}

.tech-service-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 26px;
    color: white;
    background: var(--gradient-tech);
    margin: 0 auto 20px;
    /* 居中并设置下方间距 */
}

.tech-service-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.tech-service-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    text-align: left;
}

/* 经验徽章 */
.tech-experience-badge {
    display: inline-flex;
    align-items: center;
    background: var(--primary-light);
    color: var(--tech-blue);
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1.125rem;
    margin-bottom: 32px;
    box-shadow: 0 2px 8px rgba(24, 144, 255, 0.1);
}

.tech-experience-badge i {
    margin-right: 10px;
    font-size: 20px;
}

/* 资质徽章 */
.tech-badge-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 24px;
}

.tech-badge {
    display: inline-flex;
    align-items: center;
    background: var(--tech-gray);
    border: 1px solid var(--border-color);
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.tech-badge:hover {
    background: var(--primary-light);
    color: var(--tech-blue);
    border-color: var(--tech-blue);
}

.tech-badge i {
    margin-right: 8px;
    color: var(--tech-blue);
}

/* 核心价值 */
.tech-value-item {
    display: flex;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.tech-value-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.tech-value-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    background: var(--gradient-subtle);
    color: var(--tech-blue);
    font-size: 22px;
}

.tech-value-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.tech-value-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* 底部 */
.tech-footer {
    background: var(--tech-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 0 40px;
    text-align: center;
}

.tech-footer-logo {
    font-size: 24px;
    font-weight: 700;
    color: white;
    margin-bottom: 24px;
    display: inline-block;
}

.tech-footer-contact {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 24px;
    margin: 32px 0;
}

.tech-contact-item {
    display: flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.tech-contact-item:hover {
    color: white;
}

.tech-contact-item i {
    margin-right: 8px;
    font-size: 18px;
}

.tech-copyright {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.tech-copyright p {
    margin: 8px 0;
    line-height: 1.6;
}

.tech-copyright .tech-ga-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.tech-copyright .tech-ga-info img {
    width: 20px;
    height: 20px;
    max-width: 20px;
    max-height: 20px;
    object-fit: contain;
    display: block;
    flex-shrink: 0;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .tech-hero h1 {
        font-size: 2rem;
    }

    .tech-section {
        padding: 32px 24px;
    }

    .tech-service-grid {
        grid-template-columns: 1fr;
    }

    .tech-footer-contact {
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }

    .tech-badge-grid {
        justify-content: center;
    }

    .tech-copyright {
        font-size: 0.8rem;
    }

    .tech-copyright p {
        margin: 6px 0;
    }

    .tech-copyright .tech-ga-info img {
        width: 20px;
        height: 20px;
        max-width: 20px;
        max-height: 20px;
    }
}

@media (max-width: 480px) {
    .tech-hero {
        padding: 100px 0 60px;
    }

    .tech-section {
        padding: 24px 20px;
    }

    .tech-section-title h2 {
        font-size: 1.5rem;
    }

    .tech-experience-badge {
        font-size: 1rem;
        padding: 10px 20px;
    }

    .tech-copyright {
        font-size: 0.75rem;
    }

    .tech-copyright p {
        margin: 4px 0;
    }

    .tech-copyright .tech-ga-info {
        gap: 6px;
    }

    .tech-copyright .tech-ga-info img {
        width: 18px !important;
        height: 18px !important;
        max-width: 18px !important;
        max-height: 18px !important;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tech-fade-in {
    animation: fadeInUp 0.6s ease forwards;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--tech-gray);
}

::-webkit-scrollbar-thumb {
    background: var(--tech-blue);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}
.upbutton
{
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 50px;
    height: 50px;
    background: var(--tech-blue);
    color: white;
    border: none;
    border-radius: 50%;
    box-shadow: var(--shadow-medium);
    cursor: pointer;
    display: none;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    z-index: 1000;
    transition: opacity 0.3s ease, transform 0.3s ease;line-height: 1;
}