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

:root {
    --primary-color: #003366;
    --secondary-color: #0099cc;
    --accent-color: #ff6600;
    --background-color: #e8e8e8;
    --text-color: #333333;
    --white: #ffffff;
    --button-radius: 4px;
    --card-radius: 6px;
    --metal-gradient: linear-gradient(135deg, #d8d8d8 0%, #f0f0f0 25%, #e0e0e0 50%, #f5f5f5 75%, #d0d0d0 100%);
}

body {
    font-family: "Microsoft YaHei", Arial, sans-serif;
    color: var(--text-color);
    background: var(--metal-gradient);
    background-attachment: fixed;
    line-height: 1.6;
}

h1, h2, h3, h4 {
    font-family: Arial, sans-serif;
    color: var(--primary-color);
}

a {
    text-decoration: none;
    color: inherit;
}

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

/* Header & Navigation */
header {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

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

nav a {
    color: var(--white);
    transition: color 0.3s;
}

nav a:hover {
    color: var(--secondary-color);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Banner */
.hero-banner {
    position: relative;
    height: 600px;
    overflow: hidden;
    background-color: var(--primary-color);
}

.hero-slider {
    position: relative;
    height: 100%;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 51, 102, 0.7);
}

.hero-content {
    position: relative;
    z-index: 1;
    color: var(--white);
    max-width: 800px;
    padding: 20px;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--white);
}

.hero-content p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    padding: 12px 30px;
    border-radius: var(--button-radius);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s;
    display: inline-block;
}

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

.btn-primary:hover {
    background-color: darken(var(--accent-color), 10%);
    background-color: #e65c00;
}

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

.btn-secondary:hover {
    background-color: #0088b3;
}

/* Advantages Section */
.advantages {
    padding: 5rem 0;
    background-color: var(--white);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

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

.advantage-card {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(145deg, #f5f5f5, #e0e0e0);
    border-radius: var(--card-radius);
    box-shadow: 2px 2px 8px rgba(0,0,0,0.15), -2px -2px 8px rgba(255,255,255,0.8);
    transition: transform 0.3s;
    border: 1px solid rgba(255,255,255,0.3);
}

.advantage-card:hover {
    transform: translateY(-5px);
}

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

.advantage-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

/* Quick Links */
.quick-links {
    padding: 5rem 0;
    background: linear-gradient(180deg, #e0e0e0 0%, #f0f0f0 100%);
}

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

.quick-link-card {
    background: linear-gradient(145deg, #ffffff, #f0f0f0);
    padding: 2rem;
    border-radius: var(--card-radius);
    box-shadow: 2px 2px 8px rgba(0,0,0,0.15), -2px -2px 8px rgba(255,255,255,0.9);
    text-align: center;
    transition: all 0.3s;
    border: 1px solid rgba(255,255,255,0.5);
}

.quick-link-card:hover {
    border-color: var(--secondary-color);
    transform: translateY(-3px);
}

.quick-link-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* About Page */
.company-intro {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
}

.company-intro:nth-child(even) {
    background: linear-gradient(135deg, #e8e8e8 0%, #d8d8d8 100%);
}

.company-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.company-content.reverse {
    direction: rtl;
}

.company-content.reverse > * {
    direction: ltr;
}

.company-image img {
    width: 100%;
    height: auto;
    border-radius: var(--card-radius);
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}

.company-text h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.company-text p {
    font-size: 1.1rem;
    line-height: 1.8;
}

.cooperation {
    padding: 5rem 0;
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
}

.cooperation p {
    font-size: 1.3rem;
    max-width: 800px;
    margin: 0 auto;
}

/* Products Page */
.products-section {
    padding: 5rem 0;
    background: linear-gradient(180deg, #f0f0f0 0%, #e5e5e5 100%);
}

.products-section:nth-child(even) {
    background: linear-gradient(180deg, #e5e5e5 0%, #d5d5d5 100%);
}

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

.product-card {
    background: linear-gradient(145deg, #ffffff, #f0f0f0);
    border-radius: var(--card-radius);
    overflow: hidden;
    box-shadow: 2px 2px 8px rgba(0,0,0,0.15), -2px -2px 8px rgba(255,255,255,0.9);
    transition: transform 0.3s;
    border: 1px solid rgba(255,255,255,0.5);
}

.product-card:hover {
    transform: translateY(-5px);
}

.product-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.product-info {
    padding: 1.5rem;
    text-align: center;
}

.product-info h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.product-info p {
    color: #666;
}

.laser-features {
    margin-top: 3rem;
    background: linear-gradient(145deg, #e8e8e8, #d8d8d8);
    padding: 2rem;
    border-radius: var(--card-radius);
    box-shadow: inset 2px 2px 8px rgba(0,0,0,0.1);
}

.laser-features ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.laser-features li {
    padding: 1rem;
    background: linear-gradient(145deg, #f5f5f5, #e5e5e5);
    border-radius: var(--card-radius);
    box-shadow: 2px 2px 6px rgba(0,0,0,0.1);
    text-align: center;
    font-weight: bold;
    color: var(--primary-color);
}

.process-image-container {
    margin-top: 2rem;
}

.process-image-container img {
    width: 100%;
    border-radius: var(--card-radius);
}

/* Cases Page */
.cases-section {
    padding: 5rem 0;
    background: linear-gradient(180deg, #f0f0f0 0%, #e5e5e5 100%);
}

.cases-section:nth-child(even) {
    background: linear-gradient(180deg, #e5e5e5 0%, #d5d5d5 100%);
}

.case-category {
    margin-bottom: 3rem;
}

.case-category h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
    border-left: 4px solid var(--accent-color);
    padding-left: 1rem;
}

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

.case-card {
    background: linear-gradient(145deg, #ffffff, #f0f0f0);
    border-radius: var(--card-radius);
    overflow: hidden;
    box-shadow: 2px 2px 8px rgba(0,0,0,0.15), -2px -2px 8px rgba(255,255,255,0.9);
    transition: transform 0.3s;
    border: 1px solid rgba(255,255,255,0.5);
}

.case-card:hover {
    transform: translateY(-5px);
}

.case-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.case-info {
    padding: 1.5rem;
}

.case-info p {
    color: #666;
    font-size: 1.1rem;
}

/* Contact Page */
.contact-info {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-details {
    background: linear-gradient(145deg, #e8e8e8, #d8d8d8);
    padding: 2rem;
    border-radius: var(--card-radius);
    box-shadow: inset 2px 2px 8px rgba(0,0,0,0.1);
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: linear-gradient(145deg, #ffffff, #f0f0f0);
    border-radius: var(--card-radius);
    box-shadow: 2px 2px 6px rgba(0,0,0,0.1);
}

.contact-icon {
    font-size: 1.5rem;
    margin-right: 1rem;
    color: var(--secondary-color);
}

.contact-text {
    flex: 1;
}

.contact-text h3 {
    font-size: 1rem;
    margin-bottom: 0.3rem;
    color: var(--primary-color);
}

.contact-text p {
    color: #666;
}

.wechat-qrcode {
    text-align: center;
    margin-top: 2rem;
    padding: 1rem;
    background: linear-gradient(145deg, #ffffff, #f0f0f0);
    border-radius: var(--card-radius);
    box-shadow: 2px 2px 6px rgba(0,0,0,0.1);
}

.wechat-qrcode img {
    max-width: 200px;
    border-radius: var(--card-radius);
}

.map-container {
    background: linear-gradient(145deg, #e8e8e8, #d8d8d8);
    padding: 2rem;
    border-radius: var(--card-radius);
    box-shadow: inset 2px 2px 8px rgba(0,0,0,0.1);
}

.map-images-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.map-image {
    width: 100%;
    border-radius: var(--card-radius);
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 2px 2px 8px rgba(0,0,0,0.15);
}

.map-image:hover {
    transform: scale(1.02);
    box-shadow: 4px 4px 16px rgba(0,0,0,0.25);
}

.map-container img {
    width: 100%;
    border-radius: var(--card-radius);
}

/* 图片模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 9999;
    padding-top: 60px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.9);
}

.modal-content {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 1200px;
    max-height: 80vh;
    object-fit: contain;
    animation: zoom 0.3s;
}

@keyframes zoom {
    from {transform: scale(0)}
    to {transform: scale(1)}
}

.modal-caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
    font-size: 1.2rem;
}

.close {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
    z-index: 10000;
}

.close:hover,
.close:focus {
    color: #bbb;
}

/* 响应式模态框 */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
    }
    
    .modal-caption {
        width: 90%;
        font-size: 1rem;
    }
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 2rem 0;
    text-align: center;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    nav ul {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--primary-color);
        flex-direction: column;
        padding: 1rem;
        gap: 1rem;
    }

    nav ul.active {
        display: flex;
    }

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

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

    .hero-buttons {
        flex-direction: column;
    }

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

    .company-content.reverse {
        direction: ltr;
    }

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

    .advantages-grid,
    .quick-links-grid,
    .product-categories,
    .cases-grid {
        grid-template-columns: 1fr;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}