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

a:link,
a:visited,
a:hover,
a:active {
    text-decoration: none;
}

table {
    border-collapse: collapse;
    width: 100%;
    margin: 20px 0;
    font-family: Arial, sans-serif;
}

th,
td {
    border: 1px solid #cccccc;
    padding: 10px;
    text-align: center;
}

th {
    background-color: #f2f2f2;
}

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: #ffffff;
    color: #1E1E2F;
    line-height: 1.5;
    scroll-behavior: smooth;
}

:root {
    --primary: #F37015;
    --primary-dark: #B3181E;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.01);
    --transition: all 0.3s ease;
}

/* ----- 统一容器 ----- */
.container,
.nav-container {
    width: 90%;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ----- 页面头部 ----- */
.page-header {
    background: linear-gradient(105deg, #FEF3EC 0%, #FFF8F3 100%);
    padding: 48px 0 32px;
    border-bottom: 1px solid var(--gray-200);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: #6B7280;
    margin-bottom: 20px;
}

.breadcrumb a {
    color: var(--primary-dark);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: #111827;
    letter-spacing: -0.02em;
}

.page-desc {
    color: #4B5563;
    margin-top: 12px;
    max-width: 700px;
}

/* ----- 分类导航（产品中心）----- */
.category-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
}

.category-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    border: 1px solid var(--gray-200);
    padding: 10px 28px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    color: #1F2937;
    transition: var(--transition);
}

.category-link i {
    font-size: 0.9rem;
    color: var(--primary);
}

.category-link:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.category-link.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.category-link.active i {
    color: white;
}

/* ----- 通用区块 ----- */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-align: center;
    margin-bottom: 20px;
    color: #111827;
    position: relative;
}

.section-title:after {
    content: '';
    display: block;
    width: 64px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--primary-dark));
    margin: 16px auto 0;
    border-radius: 4px;
}

.section-subtitle {
    text-align: center;
    color: #6B7280;
    max-width: 800px;
    margin: 0 auto 56px;
    font-size: 1rem;
    line-height: 1.6;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    border: none;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ----- 导航栏 ----- */
.navbar {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(8px);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--gray-200);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo-img {
    height: 52px;
    width: auto;
    display: block;
}

.nav-links {
    display: flex;
    gap: 3rem;
    align-items: center;
}

.nav-item {
    position: relative;
    list-style: none;
}

.nav-link {
    text-decoration: none;
    color: #1F2937;
    transition: var(--transition);
    font-size: 1.05rem;
    display: inline-block;
    padding: 0.5rem 0;
    background: none;
    border: none;
    font-family: inherit;
    cursor: pointer;
}

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

.menu-toggle {
    display: none;
    font-size: 1.6rem;
    background: none;
    border: none;
    color: var(--gray-800);
    cursor: pointer;
}

/* 下拉菜单 */
.dropdown-menu {
    position: absolute;
    top: 45px;
    left: 0;
    background: white;
    min-width: 220px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    padding: 0.8rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 10;
    border: 1px solid var(--gray-100);
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: 0.6rem 1.8rem;
    color: #374151;
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition);
}

.dropdown-menu a:hover {
    background: rgba(243, 112, 21, 0.08);
    color: var(--primary);
}

/* ----- 首页轮播图 ----- */
.carousel {
    position: relative;
    width: 100%;
    overflow: hidden;
    background: #111;
}

.carousel-container {
    position: relative;
    height: 75vh;
    min-height: 520px;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.6s ease, visibility 0.6s;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}

.carousel-slide.active {
    opacity: 1;
    visibility: visible;
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.15);
    z-index: 1;
}

.slide-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 24px;
    animation: fadeUp 0.8s ease;
}

.slide-content h2 {
    font-size: 3.2rem;
    font-weight: 800;
    margin-bottom: 20px;
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

.slide-content p {
    font-size: 1.2rem;
    opacity: 0.95;
    margin-bottom: 28px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(6px);
    border: none;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    color: white;
    font-size: 1.3rem;
    cursor: pointer;
    z-index: 10;
    transition: 0.2s;
}

.carousel-btn:hover {
    background: var(--primary);
}

.prev-btn {
    left: 24px;
}

.next-btn {
    right: 24px;
}

.dots {
    position: absolute;
    bottom: 24px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: 12px;
    z-index: 10;
}

.dot {
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    cursor: pointer;
    transition: 0.2s;
}

.dot.active {
    background: var(--primary);
    width: 28px;
    border-radius: 20px;
}

/* ----- 核心产品区域（首页）----- */
.products-grid-fixed {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    width: 100%;
}

.product-card-fixed {
    background: white;
    border-radius: 28px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    text-decoration: none;
    color: inherit;
    display: block;
}

.product-card-fixed:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(243, 112, 21, 0.3);
}

.product-card-fixed .product-img {
    width: 100%;
    height: 270px;
    object-fit: cover;
    display: block;
}

.product-card-fixed .product-info {
    padding: 20px 20px 24px;
    text-align: center;
}

.product-card-fixed .product-info h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0;
    color: #1F2937;
}

/* ----- 横向百叶窗（首页关于我们）----- */
.horizontal-accordion {
    background: linear-gradient(120deg, #fff 0%, #FEF6F0 100%);
}

.accordion-wrapper {
    display: flex;
    gap: 20px;
    min-height: 480px;
    width: 100%;
}

.accordion-panel {
    flex: 1;
    border-radius: 28px;
    overflow: hidden;
    position: relative;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
    background-size: cover;
    background-position: center;
    background-color: #2c2c2c;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: flex-end;
}

.accordion-panel.active {
    flex: 2.2;
}

.panel-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.2) 60%);
    z-index: 1;
    transition: all 0.3s;
}

.accordion-panel:hover .panel-overlay {
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.3) 60%);
}

.panel-content {
    position: relative;
    z-index: 2;
    padding: 32px 24px;
    color: white;
    width: 100%;
    transition: all 0.3s;
}

.panel-content h3 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.panel-content p {
    font-size: 0.9rem;
    line-height: 1.5;
    opacity: 0.85;
    margin-bottom: 16px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out, margin 0.2s;
}

.accordion-panel.active .panel-content p {
    max-height: 120px;
    margin-bottom: 16px;
}

.panel-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: white;
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease 0.1s;
    background: rgba(243, 112, 21, 0.8);
    padding: 6px 16px;
    border-radius: 40px;
}

.accordion-panel.active .panel-link {
    opacity: 1;
    transform: translateY(0);
}

.panel-link:hover {
    background: var(--primary);
}

/* ----- 右侧浮动客服栏 ----- */
.float-service {
    position: fixed;
    right: 20px;
    bottom: 20%;
    z-index: 99;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.service-item {
    width: 52px;
    height: 52px;
    background: white;
    border-radius: 30px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    color: var(--primary-dark);
    font-size: 1.4rem;
    border: 1px solid var(--gray-200);
}

.service-item:hover {
    background: var(--primary);
    color: white;
    transform: scale(1.05);
    border-color: var(--primary);
}

.info-popup {
    position: absolute;
    right: 70px;
    top: 50%;
    transform: translateY(-50%);
    background: white;
    padding: 10px 20px;
    border-radius: 40px;
    box-shadow: var(--shadow-lg);
    display: none;
    white-space: nowrap;
    font-size: 0.9rem;

    font-weight: 500;
    color: #1F2937;
    border: 1px solid var(--gray-200);
    pointer-events: none;
    z-index: 100;
}

.qrcode-popup {
    position: absolute;
    right: 70px;
    top: -20px;
    background: white;
    padding: 12px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    display: none;
    flex-direction: column;
    align-items: center;
    white-space: nowrap;
    z-index: 100;
}

.qrcode-popup img {
    width: 120px;
    height: 120px;
    display: block;
    margin-bottom: 8px;
}

.qrcode-popup span {
    font-size: 12px;
    color: #1F2937;
}

.service-item.wechat:hover .qrcode-popup {
    display: flex;
}

.service-item.phone:hover .info-popup,
.service-item.email:hover .info-popup {
    display: block;
}

.service-item a {
    color: inherit;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    border-radius: 30px;
}

.service-item a:hover {
    color: white;
}

/* ----- 页脚 ----- */
.footer {
    background: #111827;
    color: #D1D5DB;
    padding: 56px 0 24px;
    border-top: 3px solid var(--primary);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 32px;
    margin-bottom: 48px;
}

.footer-col h4 {
    color: white;
    font-size: 1rem;
    margin-bottom: 20px;
    padding-top: 20px;
}

.footer-col a {
    color: #9CA3AF;
    text-decoration: none;
    line-height: 1.8;
}

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

.qrcode-col img {
    width: 100px;
    height: 100px;
    border-radius: 12px;
    margin-bottom: 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.qrcode-col p {
    font-size: 0.75rem;
    color: #9CA3AF;
}

.copyright {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid #1F2937;
    font-size: 0.85rem;
}

/* ----- 产品详情页 ----- */
.product-detail {
    padding: 60px 0;
}

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
    margin-bottom: 56px;
}

.product-gallery {
    width: 100%;
}

.gallery-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: 28px;
    box-shadow: var(--shadow-lg);
    background: #f8f8f8;
}

.gallery-slides {
    display: flex;
    transition: transform 0.4s ease;
}

.gallery-slide {
    flex: 0 0 100%;
    width: 100%;
}

.gallery-slide img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    aspect-ratio: 16 / 9;
}

.gallery-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    transition: 0.2s;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gallery-btn:hover {
    background: var(--primary);
}

.prev-img {
    left: 12px;
}

.next-img {
    right: 12px;
}

.thumbnail-container {
    margin-top: 16px;
    display: flex;
    gap: 12px;
    overflow-x: auto;
    scrollbar-width: thin;
    padding: 4px 2px;
}

.thumbnail-container::-webkit-scrollbar {
    height: 4px;
}

.thumbnail {
    flex: 0 0 80px;
    width: 80px;
    height: 80px;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s;
    opacity: 0.7;
}

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

.thumbnail.active {
    border-color: var(--primary);
    opacity: 1;
    transform: scale(0.98);
}

.product-info h1 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.product-sub {
    color: var(--primary-dark);
    font-weight: 600;
    margin-bottom: 20px;
    border-left: 4px solid var(--primary);
    padding-left: 12px;
}

.product-desc {
    color: #4B5563;
    line-height: 1.6;
    margin-bottom: 28px;
}

.product-meta {
    background: var(--gray-100);
    border-radius: 24px;
    padding: 20px;
    margin-top: 20px;
}

.product-meta p {
    margin-bottom: 8px;
    display: flex;
    gap: 12px;
}

.product-meta strong {
    min-width: 80px;
}

/* 选项卡 */
.tabs-container {
    margin-top: 40px;
}

.tabs {
    display: flex;
    gap: 8px;
    border-bottom: 2px solid var(--gray-200);
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.tab-btn {
    background: none;
    border: none;
    padding: 12px 28px;
    font-size: 1rem;
    font-weight: 600;
    color: #6B7280;
    cursor: pointer;
    transition: var(--transition);
    border-radius: 40px 40px 0 0;
    position: relative;
}

.tab-btn:hover {
    color: var(--primary);
}

.tab-btn.active {
    color: var(--primary);
    background: rgba(243, 112, 21, 0.08);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary);
    border-radius: 3px;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
    background: white;
    border-radius: 24px;
    padding: 24px;
    border: 1px solid var(--gray-100);
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-list,
.app-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.feature-list li,
.app-list li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.feature-list li i,
.app-list li i {
    color: var(--primary);
    font-size: 1.2rem;
    margin-top: 2px;
}

.params-table {
    width: 100%;
    border-collapse: collapse;
}

.params-table tr {
    border-bottom: 1px solid var(--gray-100);
}

.params-table td {
    padding: 12px 8px;
    vertical-align: top;
}

.params-table td:first-child {
    font-weight: 600;
    width: 35%;
    color: #1F2937;
}

.params-table td:last-child {
    color: #4B5563;
}

/* 相关产品 */
.related-title {
    font-size: 1.6rem;
    font-weight: 700;
    margin: 40px 0 24px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 28px;
}

.related-card {
    background: white;
    border-radius: 24px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    text-decoration: none;
    color: inherit;
}

.related-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.related-card img {
    width: 100%;
    height: 160px;
    object-fit: cover;
}

.related-card h4 {
    padding: 16px 16px 20px;
    font-weight: 600;
}

/* ----- 生产车间列表页 ----- */
.workshop-section {
    padding: 60px 0;
}

.workshop-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.workshop-card {
    background: white;
    border-radius: 28px;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    border: 1px solid #E5E7EB;
    transition: all 0.3s;
}

.workshop-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    border-color: rgba(243, 112, 21, 0.3);
}

.workshop-img {
    width: 100%;
    height: 260px;
    overflow: hidden;
    cursor: pointer;
}

.workshop-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
}

.workshop-card:hover .workshop-img img {
    transform: scale(1.02);
}

.workshop-card h3 {
    text-align: center;
    padding: 20px 16px 24px;
    font-size: 1.3rem;
    font-weight: 600;
    color: #1F2937;
}

/* ----- 资质荣誉列表页 ----- */
.certificate-section {
    padding: 60px 0;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.cert-card {
    background: white;
    border-radius: 28px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}

.cert-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(243, 112, 21, 0.3);
}

.cert-img {
    width: 100%;
    height: 240px;
    background: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    overflow: hidden;
    padding: 24px 20px;
}

.cert-img img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    transition: transform 0.4s;
}

.cert-card:hover .cert-img img {
    transform: scale(1.02);
}

.cert-card h3 {
    text-align: center;
    padding: 20px 16px 24px;
    font-size: 1.2rem;
    font-weight: 600;
    color: #1F2937;
    border-top: 1px solid var(--gray-100);
}

/* ----- 模态窗（通用图片弹窗）----- */
.image-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    cursor: pointer;
}

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

.modal-inner {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    cursor: default;
}

.modal-inner img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    max-height: 85vh;
    object-fit: contain;
    display: block;
}

.modal-close {
    position: absolute;
    top: -44px;
    right: -8px;
    background: rgba(0, 0, 0, 0.6);
    border: none;
    color: white;
    font-size: 28px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: 0.2s;
}

.modal-close:hover {
    background: #F37015;
    transform: scale(1.05);
}

/* ----- 公司简介页 ----- */
.about-intro {
    background: white;
}

.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}

.intro-text p {
    color: #4B5563;
    margin-bottom: 20px;
    line-height: 1.6;
}

.intro-stats {
    display: flex;
    gap: 32px;
    margin-top: 32px;
}

.stat-item h3 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-dark);
}

.intro-image img {
    width: 100%;
    border-radius: 32px;
    box-shadow: var(--shadow-lg);
    object-fit: cover;
}

.mission-vision {
    background: linear-gradient(120deg, #FEF6F0 0%, #FFF 100%);
}

.mv-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
}

.mv-card {
    background: white;
    border-radius: 32px;
    padding: 40px 32px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.mv-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.mv-card i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 24px;
}

.mv-card h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.mv-card p {
    color: #6B7280;
    line-height: 1.6;
}

/* ----- 产品研发页 ----- */
.rd-intro {
    padding: 60px 0 0;
}

.rd-intro p {
    max-width: 900px;
    margin: 0 auto 40px;
    text-align: center;
    color: #4B5563;
    font-size: 1.05rem;
    line-height: 1.6;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin: 40px 0;
    text-align: center;
}

.stat-card {
    background: white;
    padding: 32px 20px;
    border-radius: 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: rgba(243, 112, 21, 0.3);
}

.stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 12px;
}

.stat-label {
    font-size: 1.1rem;
    font-weight: 500;
    color: #1F2937;
}

/* ----- 新闻列表页（一行一个）----- */
.news-section {
    padding: 60px 0;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.news-item {
    display: flex;
    gap: 32px;
    background: white;
    border-radius: 28px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    text-decoration: none;
    color: inherit;
}

.news-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(243, 112, 21, 0.3);
}

.news-img {
    flex: 0 0 280px;
    height: 200px;
    object-fit: cover;
}

.news-content {
    flex: 1;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-date {
    font-size: 0.8rem;
    color: var(--primary);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 12px;
}

.news-content h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.3;
}

.news-content p {
    color: #6B7280;
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.5;
}

.read-more {
    color: var(--primary-dark);
    font-weight: 600;
    text-decoration: none;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* ----- 新闻详情页 ----- */
.news-detail {
    padding: 60px 0;
}

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

.news-head {
    margin-bottom: 32px;
    border-bottom: 1px solid var(--gray-200);
    padding-bottom: 24px;
}

.news-date {
    font-size: 0.9rem;
    color: var(--primary);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.news-title {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    line-height: 1.3;
}

.news-meta {
    display: flex;
    gap: 24px;
    color: #6B7280;
    font-size: 0.85rem;
}

.news-featured-img {
    width: 100%;
    border-radius: 28px;
    margin: 32px 0 32px;
    box-shadow: var(--shadow-md);
}

.news-content {
    font-size: 1.05rem;
    color: #2D3A4B;
    line-height: 1.7;
}

.news-content p {
    margin-bottom: 24px;
}

.news-content h3 {
    font-size: 1.5rem;
    margin: 2px 0 16px;
    font-weight: 700;
}

.quote-block {
    background: var(--gray-50);
    padding: 24px 28px;
    border-left: 5px solid var(--primary);
    border-radius: 20px;
    margin: 32px 0;
    font-style: italic;
    color: #4B5563;
}

.post-nav {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    margin: 8px 0 32px;
    padding-top: 32px;
    border-top: 1px solid var(--gray-200);
}

.nav-prev,
.nav-next {
    flex: 1;
    background: var(--gray-50);
    border-radius: 24px;
    padding: 20px 24px;
    text-decoration: none;
    transition: var(--transition);
}

.nav-prev:hover,
.nav-next:hover {
    background: rgba(243, 112, 21, 0.08);
}

.nav-label {
    font-size: 0.8rem;
    color: var(--primary);
    margin-bottom: 8px;
    display: block;
}

.nav-title {
    font-weight: 600;
    color: #1F2937;
    font-size: 0.95rem;
}

.back-list {
    text-align: center;
    margin-top: 24px;
}

/* ----- 联系我们页面 ----- */
.contact-section {
    padding: 60px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
}

.contact-info,
.contact-form {
    background: white;
    border-radius: 32px;
    padding: 32px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-100);
}

.info-title {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 24px;
    position: relative;
    display: inline-block;
}

.info-title:after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: var(--primary);
    margin-top: 8px;
    border-radius: 3px;
}

.contact-details {
    margin: 32px 0;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 28px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: rgba(243, 112, 21, 0.1);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.3rem;
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.contact-text p,
.contact-text a {
    color: #6B7280;
    text-decoration: none;
    transition: var(--transition);
}

.contact-text a:hover {
    color: var(--primary);
}

.social-media {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--gray-200);
}

.social-media h4 {
    font-size: 1.1rem;
    margin-bottom: 16px;
}

.social-icons {
    display: flex;
    gap: 16px;
}

.social-icons a {
    width: 44px;
    height: 44px;
    background: var(--gray-100);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #4B5563;
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-icons a:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

.form-title {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: #1F2937;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--gray-200);
    border-radius: 28px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
    background: var(--gray-50);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(243, 112, 21, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.submit-btn {
    width: 100%;
    background: var(--primary);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.submit-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* ----- 分页样式 ----- */
.ab_pages {
    clear: both;
    padding: 20px 0;
    font-size: 16px;
    text-align: center;
    overflow: hidden;
}

.ab_pages ul {
    display: inline-block;
    margin: 0 auto;
    padding: 0;
}

.ab_pages ul a {
    color: #555;
    display: block;
    padding: 15px;
    float: left;
    margin: 5px;
    font-size: 16px;
    border: 1px solid #eeeeee;
    border-radius: 25px;
}

.ab_pages ul a.page-num-current {
    background: #F37015;
    color: #FFFFFF;
}

.ab_pages ul a:hover {
    background: #F37015;
    color: #FFFFFF;
}

/* ----- 动画定义 ----- */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========= 响应式样式（按屏幕宽度升序排列）========= */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
        gap: 32px;
    }
}

@media (max-width: 992px) {
    .carousel-container {
        height: 65vh;
        min-height: 450px;
    }

    .slide-content h2 {
        font-size: 2.5rem;
    }

    .products-grid-fixed {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .accordion-wrapper {
        flex-direction: column;
        gap: 16px;
    }

    .accordion-panel {
        min-height: 280px;
    }

    .accordion-panel.active {
        flex: 1;
        min-height: 360px;
    }

    .panel-content p {
        max-height: none;
        opacity: 0.9;
    }

    .accordion-panel:not(.active) .panel-content p {
        max-height: 0;
        display: none;
    }

    .accordion-panel.active .panel-content p {
        max-height: 200px;
        display: block;
    }

    .panel-link {
        opacity: 1;
        transform: none;
    }

    .workshop-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .intro-grid,
    .mv-grid,
    .research-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .research-image {
        order: -1;
        max-width: 500px;
        margin: 0 auto;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .container,
    .nav-container {
        width: 92%;
        padding: 0 16px;
    }

    .logo-img {
        height: 24px;
    }

    .menu-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        gap: 1rem;
        padding: 2rem 1.5rem;
        box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
        transform: translateY(-120%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 99;
        align-items: flex-start;
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-item {
        width: 100%;
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        padding-left: 20px;
        background: var(--gray-50);
        margin-top: 8px;
        opacity: 1;
        visibility: hidden;
        display: none;
        transform: none;
    }

    .nav-item.open .dropdown-menu {
        display: block;
        visibility: visible;
    }

    .nav-item:hover .dropdown-menu {
        visibility: hidden;
    }

    section {
        padding: 60px 0;
    }

    .carousel-btn {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }

    .carousel-container {
        height: 55vh;
        min-height: 400px;
    }

    .slide-content h2 {
        font-size: 1.8rem;
    }

    .slide-content p {
        font-size: 0.95rem;
    }

    .products-grid-fixed {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .float-service {
        right: 12px;
        bottom: 15%;
    }

    .service-item {
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
    }

    .nav-links {
        gap: 1.5rem;
    }

    .nav-link {
        font-size: 1rem;
    }

    .thumbnail {
        flex: 0 0 60px;
        width: 60px;
        height: 60px;
    }

    .gallery-btn {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }

    .detail-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .product-info h1 {
        font-size: 1.8rem;
    }

    .tab-btn {
        padding: 8px 18px;
        font-size: 0.9rem;
    }

    .workshop-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .workshop-img {
        height: 220px;
    }

    .cert-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .modal-close {
        top: -36px;
        right: -4px;
        font-size: 24px;
        width: 32px;
        height: 32px;
    }

    .news-item {
        flex-direction: column;
        gap: 0;
    }

    .news-img {
        flex: 0 0 auto;
        width: 100%;
        height: 200px;
    }

    .news-content {
        padding: 20px;
    }

    .news-content h3 {
        font-size: 1.2rem;
    }

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

    .post-nav {
        flex-direction: column;
    }

    .nav-prev,
    .nav-next {
        text-align: center;
    }
}