:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --success-color: #4facfe;
    --warning-color: #43e97b;
    --danger-color: #fa709a;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-warning: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --gradient-danger: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

/* 导航栏样式 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.navbar-brand img {
    height: 80px;
    transition: transform 0.3s ease;
}

.navbar-brand:hover img {
    transform: scale(1.05);
}

.nav-link {
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
}

    .nav-link::after {
        content: '';
        position: absolute;
        bottom: -5px;
        left: 50%;
        width: 0;
        height: 2px;
        background: var(--gradient-primary);
        transition: all 0.3s ease;
        transform: translateX(-50%);
    }

    .nav-link:hover::after {
        width: 100%;
    }

/* 英雄区域 */
.hero-section {
    background: var(--gradient-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

    .hero-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
        opacity: 0.3;
    }

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: white;
}

.hero-buttons {
    animation: fadeInUp 1s ease-out 0.4s both;
}

.btn-hero {
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    margin: 0 10px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary-hero {
    background: white;
    color: var(--primary-color);
}

.btn-secondary-hero {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-hero:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

/* 产品展示区域 */
.products-section {
    padding: 100px 0;
    background: #f8f9fa;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

    .section-title h2 {
        font-size: 2.5rem;
        font-weight: 700;
        color: var(--dark-color);
        margin-bottom: 1rem;
    }

    .section-title p {
        font-size: 1.1rem;
        color: #666;
        max-width: 600px;
        margin: 0 auto;
    }

.product-card {
    background: white;
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    margin-bottom: 30px;
}

    .product-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: var(--gradient-primary);
        transform: scaleX(0);
        transition: transform 0.3s ease;
    }

    .product-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    }

        .product-card:hover::before {
            transform: scaleX(1);
        }

.product-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: white;
    position: relative;
    overflow: hidden;
}

    .product-icon.ar {
        background: var(--gradient-primary);
    }

    .product-icon.geovision {
        background: var(--gradient-success);
    }

    .product-icon.simulation {
        background: var(--gradient-warning);
    }

    .product-icon.papers {
        background: var(--gradient-danger);
    }

.product-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.product-card p {
    color: #666;
    margin-bottom: 25px;
    line-height: 1.6;
}

.product-features {
    list-style: none;
    padding: 0;
    margin-bottom: 25px;
}

    .product-features li {
        padding: 5px 0;
        color: #555;
        position: relative;
        padding-left: 20px;
    }

        .product-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--success-color);
            font-weight: bold;
        }

.btn-product {
    background: var(--gradient-primary);
    color: white;
    padding: 10px 25px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-block;
}

    .btn-product:hover {
        transform: translateY(-2px);
        box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
        color: white;
    }

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }
}

.floating {
    animation: float 3s ease-in-out infinite;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title h2 {
        font-size: 2rem;
    }

    .product-card {
        padding: 30px 20px;
    }
}

/* 滚动动画 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

    .animate-on-scroll.animated {
        opacity: 1;
        transform: translateY(0);
    }

/* 关于我们部分样式 */
.about-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
}

    .about-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(102,126,234,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
        opacity: 0.3;
    }

.about-content {
    position: relative;
    z-index: 2;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-primary {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-success {
    background: var(--gradient-success);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-warning {
    background: var(--gradient-warning);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.company-intro p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1rem;
    color: #495057;
}

.core-advantages {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.advantage-item {
    display: flex;
    align-items: center;
    padding: 10px 0;
    font-weight: 500;
}

    .advantage-item i {
        font-size: 1.2rem;
    }

.stats-section {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    margin-top: 20px;
}

.stat-item h4 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.about-image-container {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.8) 0%, rgba(118, 75, 162, 0.8) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    cursor: pointer;
}

.about-image-container:hover .image-overlay {
    opacity: 1;
}

.overlay-content {
    text-align: center;
    color: white;
}

    .overlay-content i {
        font-size: 3rem;
        margin-bottom: 10px;
    }

/* 文字颜色优化 */
.text-primary {
    color: var(--primary-color) !important;
}

.text-success {
    color: #28a745 !important;
}

.text-warning {
    color: #ffc107 !important;
}

.text-info {
    color: #17a2b8 !important;
}

.text-dark {
    color: #343a40 !important;
}

.text-muted {
    color: #6c757d !important;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
    }

    .company-intro p {
        font-size: 1rem;
    }

    .core-advantages,
    .stats-section {
        padding: 20px;
    }

    .advantage-item {
        margin-bottom: 10px;
    }
}