:root {
    --primary: #3a86ff;
    --secondary: #8338ec;
    --dark: #212529;
    --light: #f8f9fa;
    --white: #ffffff;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    margin: 0;
    padding: 0;
}

.container {
    width: 85%;
    height: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.header {
    background: var(--dark);
    color: var(--white);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    margin: 0;
    font-size: 1.8rem;
}

.header nav a {
    color: var(--white);
    margin-left: 1.5rem;
    transition: color 0.3s;
}

.header nav a:hover {
    color: var(--primary);
}

.hero {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    text-align: center;
    padding: 6rem 0;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-button {
    display: inline-block;
    background: var(--white);
    color: var(--primary);
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    color: var(--dark);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: var(--white);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.service-card i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1rem;
    display: inline-block;
}


.solution-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.tab {
    padding: 0.8rem 1.5rem;
    background: var(--light);
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s;
}

.tab.active {
    background: var(--primary);
    color: var(--white);
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    display: grid;
    gap: 1rem;
}

.contact-form input,
.contact-form textarea {
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    width: 100%;
}

.contact-form button {
    background: var(--primary);
    color: var(--white);
    border: none;
    padding: 1rem;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.3s;
}

.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--dark);
    color: var(--white);
    text-align: center;
    padding: 1rem 0;
    z-index: 100;
}

.footer .container {
    padding-bottom: 20px;
}

.social-links {
    margin-top: 1rem;
}

.social-links a {
    color: var(--white);
    margin: 0 0.5rem;
    font-size: 1.5rem;
    transition: color 0.3s;
}

@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        text-align: center;
    }

    .header nav {
        margin-top: 1rem;
    }

    .hero {
        padding: 4rem 0;
    }

    .hero h2 {
        font-size: 2rem;
    }
}


.fa-brain-icon {
    display: inline-block;
    width: 24px;
    height: 24px;
    background-image: url('fa-brain.png');
    background-size: contain; 
    background-repeat: no-repeat; 
}

.fa-solid:before {
    content: "\f554";
}

.fa-cloud:before {
    content: "\f0c2";
}

.fa-chart-line:before,.fa-line-chart:before {
    content: "\f201";
}

.fa-mobile-alt:before,.fa-mobile-screen-button:before {
    content: "\f3cd";
}

.fa-shield-alt:before,.fa-shield-blank:before {
    content: "\f3ed";
}

.fa-cogs:before,.fa-gears:before {
    content: "\f085";
}

.portfolio {
            background: #f5f7fa;
        }
.portfolio-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
.portfolio-item {
            position: relative;
            border-radius: 10px;
            overflow: hidden;
            height: 250px;
        }
.portfolio-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
.portfolio-item:hover img {
            transform: scale(1.1);
        }
.portfolio-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,102,255,0.8);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            opacity: 0;
            transition: opacity 0.3s;
            color: white;
            padding: 0rem;
            text-align: center;
        }
.portfolio-item:hover .portfolio-overlay {
            opacity: 1;
        }

.about {
            background: var(--dark);
            color: white;
        }
        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .about-img {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
        }
        .about-img img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.5s;
        }
        .about-img:hover img {
            transform: scale(1.05);
        }
        .about-text h2 {
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
        }
        .about-text p {
            margin-bottom: 1.5rem;
            opacity: 0.9;
            line-height: 1.6;
        }
.industry-showcase {
            background: var(--steel-gray);
            padding: 4rem 10%;
            color: white;
        }