/* ==================== 
   赢方科技官网样式
   配色：蓝色主题 #2196F3
   ==================== */

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

:root {
    --primary-color: #2196F3;
    --primary-dark: #1976D2;
    --primary-light: #64B5F6;
    --secondary-color: #03A9F4;
    --accent-color: #00BCD4;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #999999;
    --bg-light: #f5f9ff;
    --bg-white: #ffffff;
    --border-color: #e0e8f0;
    --shadow: 0 2px 20px rgba(33, 150, 243, 0.1);
    --shadow-hover: 0 8px 40px rgba(33, 150, 243, 0.2);
    --gradient-primary: linear-gradient(135deg, #2196F3 0%, #03A9F4 100%);
    --gradient-light: linear-gradient(135deg, #e8f4fc 0%, #d4e9f7 100%);
    --transition: all 0.3s ease;
    /* 响应式容器变量 - 被内页 inline <style> 引用 */
    --container-w: 1444px;
    --container-narrow-w: 1204px;
    --content-read-w: 963px;
    --banner-desc-w: 722px;
    --banner-desc-lg-w: 842px;
    /* Header高度变量，用于移动端导航面板定位 */
    --header-height: 70px;
}

html {
    scroll-behavior: smooth;
}

body {
    padding-top: 70px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-white);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul, ol {
    list-style: none;
}

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

.container {
    max-width: 1444px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 子页面窄容器（文字阅读区等） */
.container-narrow {
    max-width: 1204px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 按钮样式 */
.btn-primary {
    display: inline-block;
    padding: 12px 30px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 6px;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

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

.btn-secondary {
    display: inline-block;
    padding: 12px 30px;
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    border-radius: 6px;
    font-weight: 500;
    transition: var(--transition);
}

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

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 30px;
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    border-radius: 6px;
    font-weight: 500;
    transition: var(--transition);
}

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

.btn-text {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--primary-color);
    font-weight: 500;
    transition: var(--transition);
}

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

.btn-text i {
    font-size: 12px;
}

/* 导航栏 */
.header {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 10000;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height, 70px);
}

.logo img {
    height: 40px;
}

.nav {
    display: flex;
    align-items: center;
    flex: 1;
    gap: 0;
}

.nav-menu {
    display: flex;
    gap: 10px;
}

@media (min-width: 1025px) {
    .nav-menu {
        justify-content: center;
    }

}

.nav-item {
    position: relative;
}

.nav-item > a {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 0 25px;
    height: 70px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    transition: var(--transition);
}

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

.nav-item > a i {
    font-size: 10px;
    transition: var(--transition);
}

.nav-item:hover > a i {
    transform: rotate(180deg);
}

/* 下拉菜单 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 50px rgba(0,0,0,0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: all 0.3s ease;
    min-width: 220px;
    padding: 15px 0;
    border: 1px solid rgba(0,0,0,0.05);
    z-index: 1000;
    pointer-events: none;
}

.nav-item.has-dropdown:hover > .dropdown-menu,
.dropdown-menu:hover {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.dropdown-menu ul li a {
    display: block;
    padding: 12px 25px;
    font-size: 14px;
    color: var(--text-primary);
    transition: var(--transition);
}

.dropdown-menu ul li a:hover {
    background: var(--bg-light);
    color: var(--primary-color);
}

/* 大型下拉菜单 */
.mega-menu {
    left: 50%;
    transform: translateX(-50%) translateY(15px);
    padding: 40px 50px;
    border-radius: 16px;

    max-width: 95vw !important;
}

.nav-item.has-dropdown:hover > .mega-menu,
.mega-menu:hover {
    transform: translateX(-50%) translateY(0);
}

.mega-menu-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 24px 40px;
}

.mega-menu-section h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border-color);
}

.mega-menu-section ul li a {
    padding: 10px 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.mega-menu-section ul li a:hover {
    background: transparent;
    color: var(--primary-color);
}

.mega-menu-section.industry-col2 ul {
    column-count: 2;
    column-gap: 40px;
}

.mega-menu-section.industry-col2 ul li {
    break-inside: avoid;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.nav .header-right {
    margin-left: auto;
}

/* 热线按钮 */
.btn-hotline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 30px;
    font-weight: 500;
    font-size: 14px;
    transition: var(--transition);
}

.btn-hotline:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-hotline i {
    font-size: 14px;
}

.btn-hotline .hotline-text {
    font-size: 13px;
    opacity: 0.9;
}

.btn-hotline .hotline-number {
    font-size: 15px;
    font-weight: 600;
}

.mobile-menu-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

/* Banner轮播 - 全屏背景图风格 */
.banner {
    position: relative;
    width: 100%;
    aspect-ratio: 1920 / 760;
    max-height: 760px;
    overflow: hidden;
}

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

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

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

.banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.banner-slide .container {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    align-items: center;
}

.banner-text {
    max-width: min(55%, 800px);
    padding: 40px 0;
}

.banner-text h1 {
    font-size: 52px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
    line-height: 1.2;
}

.banner-text h2 {
    font-size: 28px;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 25px;
}

.banner-text p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 35px;
    max-width: min(80%, 650px);
}

.banner-buttons {
    display: flex;
    gap: 15px;
}

/* 轮播指示器 */
.banner-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(33, 150, 243, 0.3);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--primary-color);
    width: 30px;
    border-radius: 5px;
}

/* 轮播控制按钮 */
.banner-controls {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 30px;
    pointer-events: none;
}

.banner-controls button {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: white;
    border: none;
    box-shadow: var(--shadow);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 18px;
    transition: var(--transition);
    pointer-events: auto;
}

.banner-controls button:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

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

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.section-header p {
    font-size: 16px;
    color: var(--text-secondary);
}

/* 产品矩阵搜索框 */
.search-box {
    display: flex;
    align-items: center;
    max-width: 720px;
    width: 66.666%;
    margin: 24px auto 0;
    background: #fff;
    border: 1px solid #e0e8f0;
    border-radius: 50px;
    padding: 0 6px 0 20px;
    box-shadow: 0 2px 12px rgba(33, 150, 243, 0.08);
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.search-box:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 4px 20px rgba(33, 150, 243, 0.18);
}

.search-box i {
    font-size: 16px;
    color: #bbb;
    margin-right: 10px;
    flex-shrink: 0;
}

.search-box input {
    flex: 1;
    border: none;
    outline: none;
    height: 48px;
    font-size: 15px;
    color: var(--text-primary);
    background: transparent;
    min-width: 0;
}

.search-box input::placeholder {
    color: #bbb;
}

.search-box button {
    flex-shrink: 0;
    height: 38px;
    padding: 0 28px;
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.search-box button:hover {
    box-shadow: 0 4px 14px rgba(33, 150, 243, 0.35);
    transform: translateY(-1px);
}

/* 产品矩阵 */
.products-section {
    background: var(--bg-white);
	padding-top: 80px;
    padding-bottom: clamp(40px, 5vw, 80px);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.product-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.product-card.large {
    grid-column: span 2;
    grid-row: span 2;
    display: flex;
    flex-direction: column;
}

.product-image {
    height: 180px;
    overflow: hidden;
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-card.large .product-image {
    height: 280px;
}

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

.product-content {
    padding: 25px;
}

.product-card.large .product-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.product-subtitle {
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.product-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
    flex: 1;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-weight: 500;
    font-size: 14px;
}

.product-link:hover {
    color: var(--primary-dark);
}

.product-link i {
    transition: var(--transition);
}

.produc
/* ====================
   产哛ç»å­ç»å­æ–°å¸ƒå±€
   第1行：左图右文大单布局
   第2行：4列2行明细格
   ==================== */

/* 第1行：重大单布局 - 左图右文框 */
.products-featured-row {
    margin-bottom: 40px;
}

.product-card-featured {
    display: grid;
    grid-template-columns: 55% 45%;
    min-height: 480px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    background: white;
}

.product-card-featured:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}

.product-card-featured .product-card-image {
    position: relative;
    overflow: hidden;
}

.product-card-featured .product-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card-featured:hover .product-card-image img {
    transform: scale(1.03);
}

/* 图片内皮底部衬白 */
.product-card-featured .product-card-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40%;
    background: linear-gradient(to top, rgba(0,0,0,0.15), transparent);
    pointer-events: none;
}

.product-card-featured .product-card-body {
    padding-top: 80px;
    padding: 50px 50px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.product-card-featured .product-card-body h3 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
    line-height: 1.2;
}

.product-card-featured .product-card-body .product-subtitle {
    font-size: 17px;
    color: var(--text-primary);
    margin-bottom: 28px;
    font-weight: 500;
}

.product-card-featured .product-card-body .product-desc {
    font-size: 15px;
    line-height: 1.9;
    color: var(--text-secondary);
    margin-bottom: 35px;
}

.product-card-featured .product-card-body .product-link {
    font-size: 15px;
    font-weight: 600;
}

/* 第2行：左右切换组件 */
.products-carousel {
    position: relative;
    margin-top: 40px;
}

.products-carousel-track {
    overflow: hidden;
}

.products-grid-row {
    display: flex;
    gap: 25px;
    transition: transform 0.4s ease;
}

.products-grid-row .product-card {
    flex: 0 0 calc((100% - 50px) / 3);
    min-width: 0;
}

.products-carousel-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: clamp(12px, 1.5vw, 24px);
    margin-top: clamp(20px, 3vw, 40px);
    padding: 10px;
}

.carousel-arrow {
    width: clamp(32px, 3.5vw, 48px);
    height: clamp(32px, 3.5vw, 48px);
    border-radius: 50%;
    background: transparent;
    border: 1px solid var(--border-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(13px, 1.2vw, 18px);
    color: var(--text-secondary);
    transition: all 0.3s ease;
    outline: none;
}

.carousel-arrow:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    box-shadow: 0 4px 12px rgba(0,86,179,0.3);
}

.carousel-arrow:active {
    transform: scale(0.92);
}

.products-grid-row .product-card {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    background: white;
    display: flex;
    flex-direction: column;
}

.products-grid-row .product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.products-grid-row .product-card .product-image {
    height: 200px;
    overflow: hidden;
    flex-shrink: 0;
}

.products-grid-row .product-card .product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.products-grid-row .product-card:hover .product-image img {
    transform: scale(1.04);
}

.products-grid-row .product-card .product-content {
    padding: 22px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.products-grid-row .product-card .product-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.products-grid-row .product-card .product-content .product-subtitle {
    font-size: 13px;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.products-grid-row .product-card .product-content .product-desc {
    font-size: 13px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 18px;
    flex: 1;
}

.products-grid-row .product-card .product-content .product-link {
    font-size: 13px;
    font-weight: 500;
}
.scenarios-section {
    background: var(--bg-light);
	padding: 80px 0;
}

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

.scenario-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.scenario-card .scenario-content {
    flex: 1;
}

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

.scenario-image {
    height: 150px;
    overflow: hidden;
    background: var(--bg-light);
}

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

.scenario-card:hover .scenario-image img {
    transform: scale(1.05);
}

.scenario-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
}

.scenario-content .btn-demo {
    align-self: flex-start;
}

.scenario-text {
    flex: 1;
    min-width: 0;
}

.scenario-text h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.scenario-text p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
}

/* 预约演示按钮 */
.btn-demo {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 7px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--primary-color);
    background: transparent;
    border: 1px solid var(--primary-color);
    border-radius: 20px;
    white-space: nowrap;
    transition: all 0.3s ease;
    margin-top: 2px;
    text-decoration: none;
}

.btn-demo i {
    font-size: 11px;
    transition: transform 0.3s ease;
}

.btn-demo:hover {
    background: var(--primary-color);
    color: #fff;
}

.btn-demo:hover i {
    transform: translateX(3px);
}

/* 解决方案 */
.solutions-section {
    background: var(--bg-white);
	padding: 80px 0;
}

.solutions-deck {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.deck-card {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    cursor: default;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    transition: transform .4s ease, box-shadow .4s ease;
}

.deck-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(33,150,243,.18);
}

.deck-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transition: transform .5s ease;
}

.deck-card:hover .deck-bg {
    transform: scale(1.06);
}

.deck-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(165deg, rgba(0,25,60,.82) 0%, rgba(0,40,80,.70) 50%, rgba(0,60,120,.55) 100%);
    z-index: 1;
}

.deck-card .deck-body {
    padding-top: 80px;
    position: relative;
    z-index: 2;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 36px 28px 30px;
}

.deck-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
    line-height: 1.3;
}

.deck-features {
    list-style: none;
    padding: 0;
    margin: 0 0 28px;
}

.deck-features li {
    position: relative;
    padding-left: 18px;
    font-size: 14px;
    color: rgba(255,255,255,.85);
    line-height: 1.9;
}

.deck-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 9px;
    width: 7px;
    height: 7px;
    background: #64B5F6;
    border-radius: 50%;
}

.deck-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.deck-btn-primary {
    display: inline-flex;
    align-items: center;
    padding: 9px 24px;
    background: linear-gradient(135deg, #2196F3 0%, #42A5F5 100%);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    border-radius: 50px;
    text-decoration: none;
    transition: box-shadow .3s ease, transform .3s ease;
}

.deck-btn-primary:hover {
    box-shadow: 0 4px 16px rgba(33,150,243,.4);
    transform: translateY(-1px);
    color: #fff;
}

.deck-btn-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 14px;
    color: rgba(255,255,255,.8);
    font-weight: 500;
    text-decoration: none;
    padding: 8px 22px;
    border: 1px solid rgba(255,255,255,.5);
    border-radius: 50px;
    transition: color .3s ease, border-color .3s ease, background .3s ease, gap .3s ease;
}

.deck-btn-link:hover {
    color: #fff;
    border-color: #fff;
    background: rgba(255,255,255,.12);
    gap: 8px;
}

.deck-btn-link i {
    font-size: 12px;
    transition: transform .3s ease;
}

.deck-btn-link:hover i {
    transform: translateX(3px);
}

.solutions-more {
    text-align: center;
    margin-top: 40px;
}

/* ===== 全屏优势（半透明建筑背景） ===== */
.hero-advantages {
    position: relative;
    overflow: hidden;
    background: var(--bg-light);
    padding: 60px 0;
}

/* 图片+文案左右布局 */
.hero-advantages .hero-content-2col {
    display: flex;
    align-items: stretch;
    margin: 0;
    padding: 0;
    gap: 0;
}

/* 左：图片列 */
.hero-advantages .hero-image-col {
    flex: 0 0 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-advantages .hero-image-wrap {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-advantages .hero-image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* 右：文案列 */
.hero-advantages .hero-right-col {
    flex: 0 0 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 40px 45px;
    background: #fff;
    position: relative;
}

.hero-advantages .hero-header-2col {
    margin-bottom: 28px;
}

.hero-advantages .hero-header-2col h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.hero-advantages .hero-header-2col p {
    font-size: 15px;
    color: var(--text-secondary);
}

/* 6项文案列表 */
.hero-advantages .features-grid-2col {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.hero-advantages .feature-item-2col {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.hero-advantages .feature-item-2col .fi2-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: #fff;
    margin-top: 2px;
}

.hero-advantages .feature-item-2col .fi2-text h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    line-height: 1.4;
}

.hero-advantages .feature-item-2col .fi2-text p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.hero-advantages .feature-item .highlight-num {
    display: inline-block;
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-top: 8px;
}

.hero-advantages .feature-item .highlight-num .u {
    font-size: 14px;
    font-weight: 400;
    color: var(--text-light);
}

.hero-advantages .hero-stats-row {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.hero-advantages .hero-stats-row .hs-item {
    text-align: center;
}

.hero-advantages .hero-stats-row .hs-num {
    font-size: 30px;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 4px;
}

.hero-advantages .hero-stats-row .hs-num span {
    font-size: 16px;
    color: var(--text-light);
}

.hero-advantages .hero-stats-row .hs-label {
    font-size: 12px;
    color: var(--text-light);
    letter-spacing: 1px;
}

/* 统计数据 - 保留(about/consomic/honors页使用) */
.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 42px;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 10px;
}

.stat-number span {
    font-size: 24px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 成功案例 */
.cases-section {
    background: var(--bg-white);
	padding-top: 80px;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.case-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.case-card.featured {
    grid-column: span 2;
    display: flex;
}

.case-image {
    height: 200px;
    overflow: hidden;
}

.case-card.featured .case-image {
    width: 50%;
    height: auto;
}

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

.case-card:hover .case-image img {
    transform: scale(1.05);
}

.case-content {
    padding: 25px;
}

.case-card.featured .case-content {
    width: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.case-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.tag {
    padding: 4px 12px;
    background: var(--bg-light);
    color: var(--primary-color);
    font-size: 12px;
    border-radius: 20px;
}

.case-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.case-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.case-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--primary-color);
    font-weight: 500;
    font-size: 14px;
}

.case-link:hover {
    color: var(--primary-dark);
}

.cases-more {
    text-align: center;
    margin-top: 40px;
	margin-bottom: 40px;
}

/* 新闻资讯 */
.news-section {
    background: var(--bg-light);
	padding-top: 80px;
}

.news-carousel {
    position: relative;
    padding-bottom: 80px;
}

.news-viewport {
    overflow: hidden;
    margin: 0 56px;
}

.news-track {
    display: flex;
    transition: transform 0.5s ease;
    will-change: transform;
}

.news-slide {
    flex: 0 0 25%;
    box-sizing: border-box;
    padding: 0 12px;
}

.news-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

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

.news-card-img {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--bg-light);
}

.news-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

.news-card:hover .news-card-img img {
    transform: scale(1.05);
}

.news-card-img.is-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 44px;
    color: var(--primary-color);
    background: linear-gradient(135deg, #e8effa, #d9e6f7);
}

.news-card-body {
    padding: 22px 22px 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.news-date {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 10px;
}

.news-card-body h3 {
    font-size: 17px;
    font-weight: 600;
    line-height: 1.45;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card-body h3 a {
    color: var(--text-primary);
    transition: var(--transition);
}

.news-card-body h3 a:hover {
    color: var(--primary-color);
}

.news-card-body p {
    font-size: 13.5px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 18px;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: auto;
    color: var(--primary-color);
    font-weight: 500;
    font-size: 14px;
}

.news-link i {
    transition: transform 0.3s ease;
}

.news-card:hover .news-link i {
    transform: translateX(4px);
}

.news-nav {
    position: absolute;
    top: calc(50% - 40px);
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: white;
    color: var(--text-primary);
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.14);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    cursor: pointer;
    z-index: 2;
    transition: var(--transition);
}

.news-nav:hover {
    background: var(--primary-color);
    color: #fff;
}

.news-prev {
    left: 0;
}

.news-next {
    right: 0;
}

@media (max-width: 992px) {
    .news-viewport {
        margin: 0 46px;
    }
    .news-nav {
        width: 38px;
        height: 38px;
        font-size: 14px;
    }
}

@media (max-width: 600px) {
    .news-viewport {
        margin: 0 38px;
    }
    .news-slide {
        padding: 0 8px;
    }
}
/* 资源下载 */
.resources-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.resource-card {
    background: white;
    border-radius: 12px;
    padding: 30px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.resource-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.resource-icon {
    width: 50px;
    height: 50px;
    background: var(--bg-light);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.resource-icon i {
    font-size: 20px;
    color: var(--primary-color);
}

.resource-card h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    flex: 1;
}

.resource-link {
    font-size: 13px;
    color: var(--primary-color);
    font-weight: 500;
    white-space: nowrap;
}

.resource-link:hover {
    color: var(--primary-dark);
}


/* 留言板/联系区块 */
.contact-section {
    background: var(--bg-white);
    padding: 80px 0;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 50px;
}

.contact-form {
    background: var(--bg-light);
    border-radius: 16px;
    padding: 40px;
}

.contact-form h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.contact-form > p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-group label span {
    color: #f44336;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text-primary);
    background: white;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* 预约演示表单：2 列紧凑布局 */
#demoForm {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 12px 20px !important;
}

#demoForm .form-group {
    margin-bottom: 0 !important;
}

#demoForm .form-group:nth-child(5),
#demoForm .form-group:nth-child(6),
#demoForm button[type="submit"] {
    grid-column: 1 / -1 !important;
}

/* 备注 textarea 降低高度 */
#demoForm textarea[name="remark"] {
    min-height: 60px !important;
}

/* 提交按钮也占满整行 */
#demoForm button[type="submit"] {
    width: 100% !important;
    margin-top: 4px !important;
}

/* 压缩弹窗 body 间距 */
#demoModal .modal-body {
    padding: 20px 25px !important;
}

#demoModal .modal-body > p {
    margin-bottom: 14px !important;
    font-size: 13px !important;
}

.contact-wechat {
    background: var(--gradient-primary);
    border-radius: 16px;
    padding: 40px;
    color: white;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.contact-wechat h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 25px;
}

.wechat-qrcode {
    width: 180px;
    height: 180px;
    background: white;
    border-radius: 12px;
    padding: 15px;
    margin-bottom: 20px;
}

.wechat-qrcode img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.contact-wechat > p {
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: 30px;
}

.contact-info {
    width: 100%;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: rgba(255,255,255,0.15);
    border-radius: 10px;
    margin-bottom: 15px;
}

.contact-item:last-child {
    margin-bottom: 0;
}

/*
.contact-item i {
    font-size: 20px;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
*/
.contact-item i {
    width: 32px;
    height: 32px;
    min-width: 32px;      /* 防止被压缩 */
    min-height: 32px;     /* 防止被压缩 */
    background: rgba(255,255,255,0.15);
    border-radius: 50%;   /* 圆形 */
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;       /* 防止flex布局下变形 */
}

.contact-item div {
    text-align: left;
}

.contact-item span {
    display: block;
    font-size: 12px;
    opacity: 0.8;
    margin-bottom: 3px;
}

.contact-item strong {
    font-size: 16px;
    font-weight: 600;
}

/* 底部 */
.footer {
    background: #1a1a2e;
    color: white;
}

.footer-main {
    padding: 60px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr 1fr;
    gap: 40px;
}

.footer-brand img {
    height: 40px;
    margin-bottom: 20px;
    filter: brightness(0) invert(1);
}

.footer-brand p {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-contact .contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 13px;
    color: rgba(255,255,255,0.7);
}

.footer-contact .contact-item i {
    color: var(--primary-light);
    font-size: 14px;
}

/* 底部品牌区电话号码：加大加粗提亮，作为热线重点 */
.footer-contact .contact-item .footer-phone {
    font-size: 18px;
    font-weight: 600;
    color: #ffffff;
    opacity: 1;
    white-space: nowrap;
    letter-spacing: 0.5px;
    margin-bottom: 0;
}

/* 页脚二三级导航：不换行 + 超长截断
   问题：原 grid 用 1fr 固定比例（2fr 1fr 1fr 1fr 1fr 1fr），
   中间 4 列列宽不够时 <li> 会换行，造成列表卡成两行，底部高低不一。
   改法：
     1) 列宽改成 minmax(0,1fr)，允许 flex/grid 子项收缩到 0，
        避免被最小内容宽度撑开（这是 grid 子项文本换行的最常见原因）
     2) 二级项 ul/li/a 全链路 white-space:nowrap + 单行截断，
        鼠标 hover 时用 title 显示全部文本
     3) 列表本身不加宽度、列间距保持原样
*/
.footer-links {
    min-width: 0;
}

.footer-links ul {
    min-width: 0;
}

.footer-links ul li {
    min-width: 0;
    max-width: 100%;
}

.footer-links ul li a {
    display: block;
    max-width: 100%;
    /* 不换行：grid 子项被 1fr 隐含 min-content 撑开后会换行，这里
       white-space:nowrap 走一行一列。可超过列宽不裁断（不设 ellipsis）。
       配合 grid 列 minmax(0, ...) 让列本身能缩。 */
    white-space: nowrap;
    min-width: 0;
}

/* 桌面（>1024）原 grid：2fr 1fr 1fr 1fr 1fr 1fr，中间4列 minmax(0,1fr) */
/* 根据用户反馈拉宽中间列，让产品/方案等长名单行不裁断：
   品牌区由 2fr 改为 1.3fr，中间5列由 1fr 改为 1.3fr。
   并同时叠加 grid-auto-rows:auto 使每一行由内容高度驱动。 */
@media (min-width: 1025px) {
    .footer-grid {
        grid-template-columns: 1.3fr minmax(0, 1.3fr) minmax(0, 1.3fr) minmax(0, 1.3fr) minmax(0, 1.3fr) minmax(0, 1.3fr);
    }
}

.footer-links h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    font-size: 13px;
    color: rgba(255,255,255,0.7);
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--primary-light);
}

.footer-qrcode h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

.qrcode-list {
    display: flex;
    flex-wrap: wrap;          /* 窄列不便放不下两个二维码时跳行 */
    gap: 15px;
    max-width: 100%;
}

.qrcode-item {
    text-align: center;
    min-width: 0;             /* grid 子项允许收缩 */
}

.qrcode-box {
    width: 110px;             /* 调小一点，避免挤压相邻列 */
    height: 110px;
    background: white;
    border-radius: 8px;
    padding: 8px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qrcode-box img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.qrcode-item span {
    font-size: 12px;
    color: rgba(255,255,255,0.7);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}

/* 悬浮客服 */
.floating-service {
    position: fixed;
    right: 20px;
    bottom: 100px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.service-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: white;
    border-radius: 30px;
    box-shadow: var(--shadow-hover);
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    color: var(--text-primary);
}

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

.service-btn i {
    font-size: 18px;
    color: var(--primary-color);
}

.service-btn:hover i {
    color: white;
}

.phone-btn span {
    font-weight: 500;
}

.wechat-btn {
    position: relative;
}

.wechat-popup {
    position: absolute;
    right: 100%;
    top: 50%;
    transform: translateY(-50%);
    margin-right: 15px;
    background: white;
    padding: 15px;
    border-radius: 12px;
    box-shadow: var(--shadow-hover);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    width: 150px;
    text-align: center;
}

.wechat-btn:hover .wechat-popup {
    opacity: 1;
    visibility: visible;
}

.wechat-popup img {
    width: 120px;
    height: 120px;
    margin-bottom: 10px;
}

.wechat-popup p {
    font-size: 12px;
    color: var(--text-secondary);
}

.back-to-top {
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

/* 弹窗 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: white;
    border-radius: 16px;
    width: 90%;
    max-width: min(700px, calc(100% - 40px));
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(-20px);
    transition: var(--transition);
}

.modal.show .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--primary-color);
}

.modal-body {
    padding-top: 80px;
    padding: 25px;
}

.modal-body > p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* 响应式设计 */
/* 响应式设计 */

/* 大屏/4K - ≥1920px */
@media (min-width: 1920px) {
    :root {
        --container-w: 1600px;
        --container-narrow-w: 1400px;
        --content-read-w: 1100px;
        --banner-desc-w: 800px;
        --banner-desc-lg-w: 960px;
    }
    .container { max-width: 1600px; }
    .container-narrow { max-width: 1400px; }
    .banner-text { max-width: min(45%, 900px); }
    .products-section,
    .scenarios-section,
    .solutions-section,
    .cases-section,
    .news-section {
        padding-top: clamp(80px, 6vw, 120px);
        padding-bottom: clamp(80px, 6vw, 120px); }
    .scenarios-grid { gap: 30px; }
    .solutions-deck { gap: 20px; }
    .cases-grid { gap: 30px; }
    .news-grid { gap: 35px; }

}

/* 标准大屏 1440-1919px */
@media (min-width: 1440px) and (max-width: 1919px) {
    /* 防 bootstrap.css 的 .container{width:1170px} 覆盖：width !important 覆盖 bootstrap 的 width
       home 页本身不加载 bootstrap，这条规则仅在 cert/其他加载 bootstrap 的子页面生效 */
    header.header .container,
    header .container {
        width: 1444px !important;
        max-width: 1444px !important;
    }
    :root {
        --container-w: 1444px;
        --container-narrow-w: 1204px;
        --content-read-w: 963px;
        --banner-desc-w: 722px;
        --banner-desc-lg-w: 842px;
    }
    .container { max-width: 1444px; }
    .container-narrow { max-width: 1204px; }
    /* 中屏PC下避免mega-menu溢出 */
    .nav-item.has-dropdown .mega-menu {
        left: 50% !important;
        transform: translateX(-50%) translateY(15px) !important;
        max-width: 95vw !important;
    }
    .nav-item.has-dropdown:hover > .mega-menu,
    .mega-menu:hover {
        left: 50% !important;
        transform: translateX(-50%) translateY(0) !important;
    }
    /* 导航居中、加大间距 */
    .nav {
        justify-content: center;
    }
    .nav-menu {
        gap: 20px;
    }
    .nav-item > a {
        padding: 0 24px;
    }
    .nav .header-right {
        margin-left: 50px;
    }
}

/* 超大屏 1920px+：导航居中，更大间距 */
@media (min-width: 1920px) {
    /* 防 bootstrap.css 覆盖 */
    header.header .container,
    header .container {
        width: 1700px !important;
        max-width: 1700px !important;
    }
    :root {
        --container-w: 1700px;
        --container-narrow-w: 1400px;
        --content-read-w: 1100px;
        --banner-desc-w: 840px;
        --banner-desc-lg-w: 960px;
    }
    .container { max-width: 1700px; }
    .container-narrow { max-width: 1400px; }
    .nav {
        justify-content: center;
    }
    .nav-menu {
        gap: 30px;
    }
    .nav-item > a {
        padding: 0 32px;
        font-size: 16px;
    }
    .nav .header-right {
        margin-left: 80px;
    }

}

/* 中屏 1200-1439px */
@media (min-width: 1200px) and (max-width: 1439px) {
    :root {
        --container-w: 1200px;
        --container-narrow-w: 1050px;
        --content-read-w: 880px;
        --banner-desc-w: 650px;
        --banner-desc-lg-w: 750px;
    }
    .container { max-width: 1200px; }
    .container-narrow { max-width: 1050px; }
    .banner-text { max-width: min(60%, 750px); }

}

/* 1366及以下屏宽：mega-menu 100vw 宽，4 列等宽一排 */
/* 中小屏 PC（1025-1439px）：mega-menu 全屏宽，4 列等宽，hover bridge 防断联 */
@media (min-width: 1025px) and (max-width: 1439px) {
    /* 导航防错位：缩 padding/gap/font-size 让 7 项能横排。优先级覆盖 nav-menu>li>a 的默认 25px/15px/10px */
    .nav-menu {
        gap: 0 !important;
    }
    .nav-item > a {
        padding: 0 16px !important;
        font-size: 14px !important;
    }
    /* 装在 bootstrap 环境下：container 被 bootstrap 设为 width:1170px 反而比默认 max-width:1200px 小，
       显式重设 max-width:1200px 足矣。1366 屏 viewport 1366px > 1200，container 取 1200px */
    header.header .container,
    header .container {
        max-width: 1200px !important;
    }
    .nav-item.has-dropdown .mega-menu {
        position: fixed !important;
        top: 70px !important;
        left: 0 !important;
        right: 0 !important;
        width: 100vw !important;
        max-width: 100vw !important;
        margin: 0 !important;
        padding: 30px 60px !important;
        border-radius: 0 !important;
        transform: translateY(0) !important;
    }
    /* hover 桥接：把 menu 的可点击区域向上延伸 10px，覆盖 nav-item 到 menu 之间的空隙 */
    .nav-item.has-dropdown .mega-menu::before {
        content: '' !important;
        position: fixed !important;
        top: 60px !important;
        left: 0 !important;
        width: 100vw !important;
        height: 10px !important;
        background: transparent !important;
        z-index: 1 !important;
        pointer-events: auto !important;
    }
    .mega-menu-content {
        grid-template-columns: repeat(4, minmax(0, 1fr)) !important;
        gap: 30px !important;
    }
}

/* ===== 1025-1439：仅“解决方案”下拉（.solution-menu）白底随内容收缩，不再满屏 =====
   产品服务（无 .solution-menu）保持原样，不受影响；用 class 定位，不再依赖第几个导航项 */
@media (min-width: 1025px) and (max-width: 1439px) {
    .nav-item.has-dropdown .mega-menu.solution-menu {
        position: fixed !important;
        top: 70px !important;
        left: 50% !important;
        right: auto !important;
        width: max-content !important;
        max-width: 95vw !important;
        margin: 0 !important;
        padding: 40px 50px !important;
        border-radius: 16px !important;
        transform: translateX(-50%) translateY(0) !important;
    }
    .nav-item.has-dropdown .mega-menu.solution-menu .mega-menu-content {
        grid-template-columns: none !important;
        grid-auto-flow: column !important;
        grid-auto-columns: max-content !important;
        gap: 60px !important;
    }
}

/* ===== >=1440px（含 4K）：base 的 .mega-menu 未设宽度 → 收缩成窄单列（大屏下拉全变一列的根因）。
   统一改为“内容宽度 + 每个板块一列”，让两个下拉在大屏也是多列、白底随内容收缩 ===== */
@media (min-width: 1440px) {
    .mega-menu {
        position: fixed !important;
        top: 70px !important;
        left: 50% !important;
        right: auto !important;
        width: max-content !important;
        max-width: 95vw !important;
        margin: 0 !important;
    }
    .mega-menu-content {
        grid-template-columns: none !important;
        grid-auto-flow: column !important;
        grid-auto-columns: max-content !important;
        gap: 60px !important;
    }
}

@media (max-width: 1200px) {
    .container {
        padding: 0 15px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-brand {
        grid-column: span 3;
    }

}

@media (max-width: 1024px) {
    .hero-advantages .hero-content-2col { flex-direction: column; }
    .hero-advantages .hero-image-col { flex: none; width: 100%; height: 350px; max-height: 350px; }
    .hero-advantages .hero-image-wrap { height: 100%; }
    .hero-advantages .hero-image-wrap img { width: 100%; height: 100%; object-fit: cover; }
    .hero-advantages .hero-right-col { flex: none; width: 100%; padding: 28px 24px; }
    .hero-advantages .hero-header-2col h2 { font-size: 26px; }
    .hero-advantages .hero-header-2col p { font-size: 14px; }
    .hero-advantages .features-grid-2col { gap: 16px; }

    .header {
        position: fixed;
        width: 100%;
        left: 0;
        top: 0;
    }
    
    body {
    padding-top: 80px;
        padding-top: 70px;
    }
    
    .nav {
        position: fixed;
        top: var(--header-height, 70px);
        left: 0;
        width: 100%;
        height: calc(100vh - var(--header-height, 70px));
        background: white;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        z-index: 999;
        overflow-y: auto;
        padding: 20px;
        flex-direction: column;
        align-items: stretch;
    }
    
    .nav.active {
        transform: translateX(0);
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 0;
    }
    
    .nav-item {
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-item > a {
        height: auto;
        padding: 15px 0;
        justify-content: space-between;
    }
    
    .nav-item > a i {
        transition: transform 0.3s ease;
    }
    
    .nav-item.active > a i {
        transform: rotate(180deg);
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding: 0 0 15px 15px;
        display: none;
        min-width: auto;
        pointer-events: auto;
    }
    
    .nav-item.active .dropdown-menu {
        display: block;
        transform: none !important;
    }
    
    .mega-menu {
        position: static;
        transform: none !important;
        min-width: auto;
        padding: 0 0 15px 15px;
        display: none;
    }
    
    .nav-item.active .mega-menu {
        display: block;
        transform: none !important;
    }
    
    .mega-menu-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .mega-menu-section.industry-col2 ul {
        column-count: 1;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .banner {
        height: auto;
        aspect-ratio: 16 / 9;
        min-height: 300px;
        max-height: 500px;
    }
    
    .banner-text {
        text-align: center;
        max-width: 100%;
    }
    
    .banner-text h1 {
        font-size: 36px;
    }
    
    .banner-text h2 {
        font-size: 24px;
    }
    
    .banner-buttons {
        justify-content: center;
    }
    
    /* 第1行大单布局å“应式 */
    .product-card-featured {
        grid-template-columns: 50% 50%;
        min-height: 400px;
    }
    
    .product-card-featured .product-card-body {
    padding-top: 80px;
        padding: 35px 35px;
    }
    
    .product-card-featured .product-card-body h3 {
        font-size: 26px;
    }
    
    /* 第2è¡Œå“应式 - 3å¼  -> 2å¼  */
    .products-grid-row .product-card {
        flex: 0 0 calc((100% - 25px) / 2);
    }
    
    .products-carousel-nav {
        margin-top: clamp(16px, 2.5vw, 32px);
        gap: clamp(10px, 1.2vw, 18px);
    }
    
    .scenarios-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .solutions-deck {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .stats-row {
        flex-wrap: wrap;
        gap: 30px;
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .case-card.featured {
        grid-column: span 2;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .resources-row {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-brand {
        grid-column: span 2;
    }
    
    /* 页首/内页移动端导航 - header-right 在滑动面板底部 */
    .nav .header-right {
        margin-left: 0;
        margin-top: auto;
        padding-top: 20px;
        border-top: 1px solid var(--border-color);
        width: 100%;
        display: flex;
        flex-direction: column;
    }
    
    .nav .btn-hotline {
        width: 100%;
        justify-content: center;
        border-radius: 30px;
    }


}

@media (max-width: 768px) {
    .hero-advantages .hero-image-col { height: 260px; max-height: 260px; }
    .hero-advantages .hero-right-col { padding: 20px 16px; }
    .hero-advantages .hero-header-2col { margin-bottom: 20px; }
    .hero-advantages .hero-header-2col h2 { font-size: 22px; }
    .hero-advantages .hero-header-2col p { font-size: 13px; }
    .hero-advantages .features-grid-2col { gap: 14px; }
    .hero-advantages .feature-item-2col { gap: 10px; }
    .hero-advantages .feature-item-2col .fi2-icon { width: 30px; height: 30px; font-size: 14px; flex-shrink: 0; }
    .hero-advantages .feature-item-2col .fi2-text h3 { font-size: 14px; }
    .hero-advantages .feature-item-2col .fi2-text p { font-size: 12.5px; }

    body {
    padding-top: 80px;
        padding-top: 60px;
    }
    
    .header .container {
        height: 60px;
        --header-height: 60px;
    }
    
    .logo img {
        height: 32px;
    }
    
    .banner {
        height: auto;
        aspect-ratio: 16 / 9;
        min-height: 200px;
        max-height: 400px;
    }
    
    .banner-text {
        text-align: center;
    }
    
    .banner-text h1 {
        font-size: 28px;
    }
    
    .banner-text h2 {
        font-size: 20px;
    }
    
    .banner-text p {
        max-width: 100%;
    }
    
    /* 第1è¡Œå“应式 */
    .product-card-featured {
        grid-template-columns: 1fr;
        min-height: auto;
    }
    
    .product-card-featured .product-card-image {
        height: 280px;
    }
    
    .product-card-featured .product-card-body {
    padding-top: 80px;
        padding: 30px 25px;
    }
    
    .product-card-featured .product-card-body h3 {
        font-size: 22px;
    }
    
    /* 第2è¡Œå“应式 - 3å¼  -> 1å¼  */
    .products-grid-row .product-card {
        flex: 0 0 100%;
    }
    
    .products-carousel-nav {
        margin-top: clamp(14px, 3vw, 24px);
        gap: clamp(8px, 1.5vw, 14px);
    }
    
    .scenarios-grid {
        grid-template-columns: 1fr;
    }
    
    .solutions-deck {
        grid-template-columns: 1fr;
    }
    
    .stats-row {
        flex-direction: column;
        gap: 25px;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .case-card.featured {
        grid-column: span 1;
        flex-direction: column;
    }
    
    .case-card.featured .case-image,
    .case-card.featured .case-content {
        width: 100%;
    }
    
    .resources-row {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-brand {
        grid-column: span 1;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .floating-service {
        right: 10px;
        bottom: 80px;
    }
    
    .service-btn span {
        display: none;
    }
    
    .service-btn {
        padding: 12px;
        border-radius: 50%;
    }


}

/* ====================
   手机端小屏适配 (≤480px)
   ==================== */
@media (max-width: 480px) {
    .hero-advantages .hero-image-col { height: 200px; max-height: 200px; }
    .hero-advantages .hero-right-col { padding: 16px 12px; }
    .hero-advantages .hero-header-2col h2 { font-size: 20px; }
    .hero-advantages .hero-header-2col p { font-size: 12px; }
    .hero-advantages .features-grid-2col { gap: 12px; }
    .hero-advantages .feature-item-2col .fi2-icon { width: 26px; height: 26px; font-size: 12px; }
    .hero-advantages .feature-item-2col .fi2-text h3 { font-size: 13px; }
    .hero-advantages .feature-item-2col .fi2-text p { font-size: 12px; }


    .nav {
        padding: 12px 15px;
    }

    .nav-item > a {
        padding: 12px 0;
        font-size: 14px;
    }

    .dropdown-menu ul li a {
        padding: 10px 0;
        font-size: 13px;
    }

    .nav .header-right {
        padding-top: 14px;
    }

    .nav .btn-hotline {
        padding: 8px 16px;
        font-size: 13px;
        flex-wrap: wrap;
        gap: 4px;
    }

    .nav .btn-hotline .hotline-number {
        font-size: 14px;
    }

    .banner-text h1 {
        font-size: 22px;
    }

    .banner-text h2 {
        font-size: 16px;
    }

    .banner-text p {
        font-size: 13px;
    }

    .banner-dots {
        bottom: 16px;
    }

    .dot {
        width: 8px;
        height: 8px;
    }

    .dot.active {
        width: 22px;
    }


}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    
    .hero-advantages .hero-content-2col { flex-direction: column; }
    .hero-advantages .hero-image-col { flex: none; width: 100%; height: 350px; max-height: 350px; }
    .hero-advantages .hero-image-wrap { height: 100%; }
    .hero-advantages .hero-image-wrap img { width: 100%; height: 100%; object-fit: cover; }
    .hero-advantages .hero-right-col { flex: none; width: 100%; padding: 28px 24px; }
    .hero-advantages .hero-header-2col h2 { font-size: 26px; }
    .hero-advantages .hero-header-2col p { font-size: 14px; }
    .hero-advantages .features-grid-2col { gap: 16px; }
}
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* 加载动画 */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: loading 1.5s infinite;

    .hero-advantages { padding: 40px 0; }
    .hero-advantages .hero-image-col { height: 260px; max-height: 260px; }
    .hero-advantages .hero-right-col { padding: 20px 16px; }
    .hero-advantages .hero-header-2col { margin-bottom: 20px; }
    .hero-advantages .hero-header-2col h2 { font-size: 22px; }
    .hero-advantages .hero-header-2col p { font-size: 13px; }
    .hero-advantages .features-grid-2col { gap: 14px; }
    .hero-advantages .feature-item-2col { gap: 10px; }
    .hero-advantages .feature-item-2col .fi2-icon { width: 30px; height: 30px; font-size: 14px; flex-shrink: 0; }
    .hero-advantages .feature-item-2col .fi2-text h3 { font-size: 14px; }
    .hero-advantages .feature-item-2col .fi2-text p { font-size: 12.5px; }
}

@keyframes loading {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
/* ===== 新选择赢方（2列布局）响应式 ===== */
@media (max-width: 1024px) {
}

}

@media (max-width: 768px) {

}

@media (max-width: 480px) {

}

}