/* ==================== 基础样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1a5276;
    --secondary-color: #2980b9;
    --accent-color: #e74c3c;
    --text-color: #333;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --header-height: 80px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.section {
    padding: 35px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--accent-color);
    margin: 15px auto;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 50px;
}

.btn-more {
    display: inline-block;
    padding: 12px 30px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 5px;
    transition: var(--transition);
    margin-top: 20px;
}

.btn-more:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* ==================== 顶部固定区 ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
    height: var(--header-height);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    padding: 15px 0;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo {
    height: 50px;
    width: auto;
}

.company-name {
    display: flex;
    flex-direction: column;
}

.name-cn {
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--primary-color);
}

.name-en {
    font-size: 0.75rem;
    color: var(--text-light);
}

.nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-menu {
    display: flex;
    gap: 25px;
}

.nav-menu a {
    padding: 8px 15px;
    color: var(--text-color);
    font-weight: 500;
    position: relative;
    transition: var(--transition);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 80%;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
}

.phone-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-color);
    font-weight: bold;
    font-size: 1rem;
}

.phone-icon {
    width: 20px;
    height: 20px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: var(--transition);
}

/* ==================== 全屏轮播图区域 ==================== */
.hero-slider {
    position: relative;
    height: calc(100vh - var(--header-height));
    min-height: 500px;
    overflow: hidden;
    margin-top: var(--header-height);
}

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

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1.2s ease-in-out, transform 1.2s ease-in-out;
    transform: scale(1.05);
}

.slide.active {
    opacity: 1;
    transform: scale(1);
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
}

.slide-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--white);
    width: 90%;
    max-width: 800px;
}

.slide-title {
    font-size: 3.5rem;
    margin-bottom: 25px;
    text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.6);
    animation: fadeInUp 1s ease;
    font-weight: bold;
    letter-spacing: 2px;
}

.slide-subtitle {
    font-size: 1.2rem;
    line-height: 1.8;
    padding: 15px 30px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 8px;
    display: inline-block;
    backdrop-filter: blur(5px);
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
    animation: fadeInUp 1s ease 0.3s both;
    max-width: 90%;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slider-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 15px;
    z-index: 10;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: var(--transition);
}

.dot:hover,
.dot.active {
    background: var(--white);
    transform: scale(1.2);
}

/* ==================== 产品中心区域 ==================== */
.products-section {
    background: var(--bg-light);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    max-width: 1200px;
    margin: 0 auto;
}

.product-card {
    display: block;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.product-image {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 82, 118, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.product-name {
    display: none;
    padding: 15px;
    background: var(--white);
    text-align: center;
}

.product-name h3 {
    color: var(--text-dark);
    font-size: 1rem;
    font-weight: 500;
    margin: 0;
}

.product-overlay h3 {
    color: var(--white);
    font-size: 1.3rem;
    text-align: center;
    padding: 10px;
}

/* ==================== 关于我们区域 ==================== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-image {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-text h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 15px;
    line-height: 1.8;
    text-indent: 2em;
}

/* ==================== 我们的优势区域 ==================== */
.advantages-section {
    background: var(--bg-light);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.advantage-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.advantage-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.advantage-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.advantage-card:hover .advantage-image img {
    transform: scale(1.1);
}

.advantage-number {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 45px;
    height: 45px;
    background: rgba(26, 82, 118, 0.9);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: bold;
    backdrop-filter: blur(5px);
}

.advantage-content {
    padding: 25px 20px;
}

.advantage-content h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 12px;
    font-weight: bold;
}

.advantage-content p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ==================== 联系我们区域 ==================== */
.contact-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.contact-wrapper {
    max-width: 1000px;
    margin: 0 auto;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.contact-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-bottom: 0;
}

.contact-card {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.contact-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

.contact-link {
    display: block;
    padding: 25px 20px;
    text-decoration: none;
    color: inherit;
}

.contact-link:hover {
    text-decoration: none;
    color: inherit;
}

.contact-card .contact-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 15px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-card:hover .contact-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 8px 25px rgba(var(--primary-color-rgb), 0.4);
}

.contact-card .contact-icon svg {
    width: 28px;
    height: 28px;
    fill: #ffffff !important;
}

.contact-info-box h4 {
    font-size: 1rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.contact-value {
    font-size: 1.05rem;
    color: var(--text-color);
    font-weight: bold;
    margin-bottom: 5px;
}

.contact-label {
    font-size: 0.85rem;
    color: var(--text-light);
}

.contact-address {
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: flex-start;
    gap: 25px;
    transition: var(--transition);
}

.contact-address-link {
    display: block;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.contact-address-link:hover {
    text-decoration: none;
    color: inherit;
}

.contact-address-link:hover .contact-address {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

.address-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-color), #c0392b);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.address-icon svg {
    width: 28px;
    height: 28px;
    fill: var(--white);
}

.address-content h4 {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.address-content p {
    color: var(--text-color);
    line-height: 1.7;
    margin-bottom: 8px;
}

/* ==================== 底部备案区域 ==================== */
.footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 25px 0;
    text-align: center;
}

.footer p {
    font-size: 0.95rem;
    margin: 5px 0;
}

.footer a {
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.footer a:hover {
    color: var(--accent-color);
}

/* ==================== 响应式设计 - 平板端 ==================== */
@media (max-width: 1024px) {
    :root {
        --header-height: 70px;
    }

    /* 导航调整 - iPad竖屏 */
    .header-content {
        justify-content: space-between;
    }

    .logo-link {
        flex-shrink: 0;
    }

    .logo {
        max-height: 50px;
    }

    .company-name {
        display: flex;
        flex-direction: column;
    }

    .name-cn {
        font-size: 0.75rem;
    }

    .name-en {
        font-size: 0.55rem;
    }

    .nav {
        gap: 10px;
    }

    .nav-menu {
        gap: 8px;
    }

    .nav-menu a {
        padding: 5px 10px;
        font-size: 0.85rem;
    }

    .phone-link {
        gap: 5px;
        font-size: 0.85rem;
    }

    .products-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }

    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .advantage-card:hover {
        transform: translateY(-8px);
    }

    .about-content {
        gap: 30px;
    }

    /* 轮播图 - iPad竖屏不要全屏 */
    .hero-slider {
        height: 55vh;
        min-height: 320px;
        max-height: 500px;
    }

    .slide-title {
        font-size: 2.8rem;
    }

    .slide-subtitle {
        font-size: 1.1rem;
        padding: 12px 25px;
    }

    /* iPad端显示产品标题 */
    .product-name {
        display: block;
        padding: 10px;
        text-align: center;
    }

    .product-overlay {
        display: none;
    }

    .product-item-name {
        display: block;
        padding: 10px;
        text-align: center;
    }

    .product-name-overlay {
        display: none;
    }
}

/* ==================== 响应式设计 - 手机端 ==================== */
@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }

    .section {
        padding: 35px 0;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .section-subtitle {
        font-size: 1rem;
        margin-bottom: 30px;
    }

    /* Header */
    .header-content {
        padding: 10px 0;
    }

    .logo {
        height: 40px;
    }

    .name-cn {
        font-size: 0.9rem;
    }

    .name-en {
        font-size: 0.6rem;
    }

    .nav {
        gap: 10px;
    }

    .phone-link {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        box-shadow: var(--shadow);
        transform: translateY(-150%);
        transition: var(--transition);
        z-index: 999;
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .nav-menu li {
        border-bottom: 1px solid #eee;
    }

    .nav-menu a {
        display: block;
        padding: 15px;
    }

    .nav-menu a::after {
        display: none;
    }

    /* Hero Slider */
    .hero-slider {
        height: 45vh;
        min-height: 280px;
        max-height: 400px;
    }

    .slide-title {
        font-size: 2rem;
        letter-spacing: 1px;
        margin-bottom: 20px;
    }

    .slide-subtitle {
        font-size: 0.95rem;
        padding: 10px 20px;
        line-height: 1.6;
    }

    /* Products */
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        max-width: 600px;
    }

    .product-overlay {
        display: none;
    }

    .product-name {
        display: block;
    }

    .product-name h3 {
        font-size: 0.9rem;
    }

    /* About */
    .about-content {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .about-text h3 {
        font-size: 1.4rem;
    }

    /* Advantages */
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        max-width: 500px;
        margin: 0 auto;
    }

    .advantage-image {
        height: 180px;
    }

    /* Contact */
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .contact-address {
        padding: 20px;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .contact-icon {
        width: 40px;
        height: 40px;
    }

    .contact-icon svg {
        width: 20px;
        height: 20px;
    }

    .address-icon {
        width: 50px;
        height: 50px;
    }

    .address-icon svg {
        width: 24px;
        height: 24px;
    }
}

/* ==================== 超小屏幕 ==================== */
@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .name-en {
        display: none;
    }

    .slide-title {
        font-size: 1.6rem;
        letter-spacing: 0;
    }

    .slide-subtitle {
        font-size: 0.85rem;
        padding: 8px 15px;
    }

    .slider-dots {
        bottom: 20px;
    }

    .dot {
        width: 10px;
        height: 10px;
    }

    .advantage-card h3 {
        font-size: 1.1rem;
    }

    .advantage-card p {
        font-size: 0.85rem;
    }

    /* Products */
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
        max-width: 400px;
    }

    .product-name h3 {
        font-size: 0.85rem;
    }

    /* Contact */
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .contact-card {
        padding: 18px 12px;
    }

    .contact-card .contact-icon {
        width: 45px;
        height: 45px;
    }

    .contact-icon svg {
        width: 22px;
        height: 22px;
    }

    .contact-value {
        font-size: 0.9rem;
    }

    .contact-label {
        font-size: 0.8rem;
    }

    .contact-info-box h4 {
        font-size: 0.95rem;
    }

    .contact-address {
        padding: 20px 15px;
    }
}

/* ==================== 关于我们页面 ==================== */
.page-banner {
    margin-top: var(--header-height);
    height: 400px;
    position: relative;
    overflow: hidden;
}

.banner-image {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    position: relative;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 82, 118, 0.7);
}

.banner-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--white);
    width: 90%;
    max-width: 800px;
}

.banner-content h1 {
    font-size: 3rem;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.banner-content p {
    font-size: 1.2rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

/* 产品列表页面 */
.product-list-section {
    background: var(--bg-light);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.product-item {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    background: var(--white);
    cursor: pointer;
}

.product-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.product-img {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-item:hover .product-img img {
    transform: scale(1.1);
}

.product-name-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 82, 118, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.product-item:hover .product-name-overlay {
    opacity: 1;
}

.product-item-name {
    display: none;
    padding: 15px;
    background: var(--white);
    text-align: center;
}

.product-item-name h3 {
    color: var(--text-dark);
    font-size: 1rem;
    font-weight: 500;
    margin: 0;
}

.product-name-overlay h3 {
    color: var(--white);
    font-size: 1.5rem;
    text-align: center;
    padding: 15px;
    font-weight: bold;
}

/* 图片放大弹窗 */
.image-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

.image-modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    max-width: 90%;
    max-height: 90vh;
    z-index: 10001;
    animation: modalFadeIn 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: var(--white);
    font-size: 2.5rem;
    cursor: pointer;
    transition: var(--transition);
    line-height: 1;
    padding: 0;
    width: 40px;
    height: 40px;
}

.modal-close:hover {
    color: var(--accent-color);
    transform: rotate(90deg);
}

#modalImage {
    max-width: 100%;
    max-height: calc(90vh - 80px);
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.modal-disclaimer {
    margin-top: 20px;
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 8px;
    text-align: center;
}

.modal-disclaimer p {
    color: var(--text-color);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 联系我们页面 */
.contact-section {
    position: relative;
    padding: 80px 0;
    overflow: hidden;
}

.contact-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--accent-color) 100%);
    opacity: 0.05;
    transform: skewY(-3deg);
    transform-origin: top left;
}

/* 地址信息区域 */
.contact-address-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.section-divider {
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 3px;
    margin: 0 auto 20px;
}

.address-section-title {
    text-align: center;
    font-size: 1.8rem;
    color: var(--text-dark);
    margin-bottom: 40px;
    font-weight: 600;
}

.contact-address-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}
.nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--secondary-color);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    padding: 8px 16px;
    background: rgba(var(--secondary-color-rgb), 0.08);
    border-radius: 8px;
    transition: all 0.3s ease;
    align-self: flex-start;
    margin-top: 5px;
}

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

/* 企业介绍区域 */
.company-intro {
    background: var(--bg-light);
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.intro-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.intro-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.intro-text p {
    color: var(--text-light);
    line-height: 1.9;
    margin-bottom: 15px;
    text-align: justify;
    text-indent: 2em;
}

/* 主营业务区域 */
.business-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.business-text p {
    color: var(--text-light);
    line-height: 1.9;
    margin-bottom: 15px;
    text-align: justify;
    text-indent: 2em;
}

.business-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.business-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 应用领域区域 */
.application-section {
    background: var(--bg-light);
}

.application-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
}

.app-tag {
    padding: 12px 25px;
    background: var(--white);
    border-radius: 25px;
    color: var(--primary-color);
    font-size: 1rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.app-tag:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

/* 生产能力区域 */
.production-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.production-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.production-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.production-text p {
    color: var(--text-light);
    line-height: 1.9;
    text-align: justify;
    text-indent: 2em;
}

/* 关于我们页面响应式 */
@media (max-width: 1024px) {
    .page-banner {
        height: 350px;
    }

    .banner-content h1 {
        font-size: 2.5rem;
    }

    .app-tag {
        padding: 10px 22px;
        font-size: 0.95rem;
    }

    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }

    /* iPad端显示产品标题 */
    .product-item-name {
        display: block;
        padding: 10px;
        text-align: center;
    }

    .product-name-overlay {
        display: none;
    }

    .modal-disclaimer p {
        font-size: 0.85rem;
    }

    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .page-banner {
        height: 300px;
    }

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

    .banner-content p {
        font-size: 1rem;
    }

    .intro-content,
    .business-content,
    .production-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .app-tag {
        padding: 10px 20px;
        font-size: 0.95rem;
    }

    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .product-name-overlay h3 {
        font-size: 1.2rem;
    }

    .modal-content {
        max-width: 95%;
    }

    .modal-disclaimer {
        padding: 12px 15px;
    }

    .modal-disclaimer p {
        font-size: 0.8rem;
    }

    /* 联系我们页面 - 平板端 */
    .contact-section {
        padding: 60px 0;
    }
    
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
    }
    
    .address-section-title {
        font-size: 1.5rem;
    }
    
    /* 首页联系我们区域 - 手机端布局 */
    .contact-row {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* 公司地址单独一行显示 */
    .contact-row .contact-card:nth-child(3) {
        grid-column: span 2;
    }
}

@media (max-width: 480px) {
    .page-banner {
        height: 250px;
    }

    .banner-content h1 {
        font-size: 1.8rem;
    }

    .banner-content p {
        font-size: 0.9rem;
    }

    .app-tag {
        padding: 8px 16px;
        font-size: 0.9rem;
    }

    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .product-name-overlay {
        display: none;
    }

    .product-item-name {
        display: block;
    }

    .product-item-name h3 {
        font-size: 0.9rem;
    }

    .modal-close {
        font-size: 2rem;
        top: -35px;
    }

    .modal-disclaimer {
        padding: 10px 12px;
        margin-top: 15px;
    }

    .modal-disclaimer p {
        font-size: 0.75rem;
    }

    /* 联系我们页面 - 手机端 */
    .contact-section {
        padding: 50px 0;
    }
    
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .address-section-title {
        font-size: 1.3rem;
    }
    
}