* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.navbar {
    background-color: #1a1a2e;
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #fff;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #4e9af1;
}

.hero {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #fff;
    padding: 200px 0 150px;
    text-align: center;
}

.hero-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: bold;
}

.hero-content p {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    font-size: 16px;
}

.btn-primary {
    background-color: #4e9af1;
    color: #fff;
}

.btn-primary:hover {
    background-color: #3b7bc4;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: #4e9af1;
    border: 2px solid #4e9af1;
}

.btn-secondary:hover {
    background-color: #4e9af1;
    color: #fff;
}

section {
    padding: 80px 0;
}

section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #1a1a2e;
}

.about {
    background-color: #fff;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 16px;
    line-height: 1.8;
    color: #555;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-item {
    text-align: center;
    padding: 30px 20px;
    background-color: #f8f9fa;
    border-radius: 10px;
    transition: transform 0.3s;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.feature-item h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #1a1a2e;
}

.feature-item p {
    font-size: 14px;
    color: #666;
}

.products {
    background-color: #f8f9fa;
}

.product-featured {
    margin-bottom: 60px;
    position: relative;
}

.featured-badge {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: #fff;
    padding: 8px 25px;
    border-radius: 25px;
    font-weight: bold;
    font-size: 14px;
    box-shadow: 0 4px 15px rgba(240, 147, 251, 0.4);
}

.product-card {
    background-color: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.product-card.featured {
    border: 3px solid #f5576c;
}

.product-image {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-placeholder {
    font-size: 100px;
    color: rgba(255, 255, 255, 0.8);
}

.product-content {
    padding: 40px;
}

.product-content h3 {
    font-size: 28px;
    margin-bottom: 10px;
    color: #1a1a2e;
}

.product-tag {
    display: inline-block;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: #fff;
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 12px;
    margin-bottom: 20px;
}

.product-content > p {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
    margin-bottom: 25px;
}

.product-features {
    list-style: none;
    margin-bottom: 30px;
}

.product-features li {
    padding: 8px 0;
    font-size: 15px;
    color: #555;
    border-bottom: 1px solid #eee;
}

.product-features li:last-child {
    border-bottom: none;
}

.product-regular {
    max-width: 800px;
    margin: 0 auto;
}

.contact {
    background-color: #fff;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
}

.contact-icon {
    font-size: 32px;
    margin-right: 20px;
    min-width: 50px;
}

.contact-item h4 {
    font-size: 18px;
    margin-bottom: 5px;
    color: #1a1a2e;
}

.contact-item p {
    color: #666;
    font-size: 15px;
}

.contact-form {
    background-color: #f8f9fa;
    padding: 40px;
    border-radius: 10px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #1a1a2e;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 15px;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #4e9af1;
}

.form-group textarea {
    resize: vertical;
}

.footer {
    background-color: #1a1a2e;
    color: #fff;
    text-align: center;
    padding: 30px 0;
}

.footer p {
    opacity: 0.8;
}

@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 20px;
    }

    .nav-links {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 32px;
    }

    .hero-content p {
        font-size: 16px;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .about-features {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    section h2 {
        font-size: 28px;
    }
}