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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
}

.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: white;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-size: 1.1rem;
    transition: opacity 0.3s;
}

.nav-menu a:hover {
    opacity: 0.8;
}

.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 2rem;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin: 3rem 0 2rem;
    color: #333;
}

.category-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.category-tab {
    padding: 0.8rem 1.5rem;
    border: none;
    background: white;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.category-tab:hover,
.category-tab.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    transform: translateY(-2px);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.product-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.product-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: #f0f0f0;
}

.product-info {
    padding: 1.5rem;
}

.product-name {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    color: #333;
}

.product-description {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.product-price {
    font-size: 1.5rem;
    font-weight: bold;
    color: #e74c3c;
}

.product-category {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: #f0f0f0;
    border-radius: 15px;
    font-size: 0.8rem;
    color: #666;
    margin-bottom: 0.5rem;
}

.about-section {
    background: white;
    padding: 4rem 2rem;
    margin-top: 3rem;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: #333;
}

.about-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 1rem;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-item {
    text-align: center;
    padding: 2rem;
    background: #f9f9f9;
    border-radius: 10px;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-title {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    color: #333;
}

.feature-description {
    color: #666;
    font-size: 0.9rem;
}

footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
}

.footer-content p {
    margin-bottom: 0.5rem;
}

.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-toolbar {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 2001;
    background: rgba(255, 255, 255, 0.1);
    padding: 8px 12px;
    border-radius: 25px;
    backdrop-filter: blur(10px);
}

.zoom-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 20px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.zoom-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.zoom-info {
    color: white;
    font-size: 14px;
    min-width: 50px;
    text-align: center;
    font-weight: bold;
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(1);
    transform-origin: center center;
    max-width: 90vw;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 10px;
    animation: zoomIn 0.3s;
    cursor: grab;
    transition: transform 0.1s ease-out;
}

.modal-content.zoomed {
    cursor: grab;
}

.modal-content.dragging {
    cursor: grabbing;
    transition: none;
}

@keyframes zoomIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
    z-index: 2001;
}

.modal-close:hover,
.modal-close:focus {
    color: #bbb;
    text-decoration: none;
    cursor: pointer;
}

.about-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 2rem;
    text-align: center;
}

.about-hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.about-hero p {
    font-size: 1.3rem;
    opacity: 0.9;
}

.about-content-page {
    max-width: 1000px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.about-section-page {
    margin-bottom: 4rem;
}

.about-section-page h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: #333;
    border-left: 4px solid #667eea;
    padding-left: 1rem;
}

.about-section-page p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 1rem;
}

.contact-info {
    background: white;
    padding: 3rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    margin-top: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: #f9f9f9;
    border-radius: 8px;
}

.contact-icon {
    font-size: 2rem;
    margin-right: 1rem;
    width: 60px;
    text-align: center;
}

.contact-details h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.contact-details p {
    font-size: 1rem;
    color: #666;
    margin: 0;
}

.team-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.team-member {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.team-member:hover {
    transform: translateY(-5px);
}

.team-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
}

.team-name {
    font-size: 1.3rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    color: #333;
}

.team-role {
    color: #667eea;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.team-description {
    color: #666;
    font-size: 0.9rem;
}

.back-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-size: 1.1rem;
    transition: transform 0.3s, box-shadow 0.3s;
    margin-top: 2rem;
}

.back-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

@media (max-width: 768px) {
    .nav-menu {
        gap: 1rem;
    }

    .nav-menu a {
        font-size: 0.9rem;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .category-tabs {
        gap: 0.5rem;
    }

    .category-tab {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .about-hero h1 {
        font-size: 2rem;
    }

    .about-hero p {
        font-size: 1rem;
    }

    .contact-item {
        flex-direction: column;
        text-align: center;
    }

    .contact-icon {
        margin-right: 0;
        margin-bottom: 0.5rem;
    }
}