/* ============================================
   金黑网络官网 - 全局样式
   ============================================ */

/* CSS变量定义 */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #0ea5e9;
    --accent-color: #f59e0b;
    --dark-color: #1e293b;
    --gray-dark: #475569;
    --gray-color: #64748b;
    --gray-light: #94a3b8;
    --gray-lighter: #e2e8f0;
    --gray-bg: #f1f5f9;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --text-dark: #0f172a;
    --text-gray: #475569;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* 重置样式 */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 图片响应式 - 配合width/height属性使用 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

input,
textarea {
    font-family: inherit;
    font-size: inherit;
}

/* 容器 */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* SEO优化：确保内容区域语义化 */
main {
    display: block;
}

section {
    position: relative;
}

/* SEO优化：隐藏但可被屏幕阅读器访问 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 间距工具类 */
.p-b-80 {
    padding-bottom: 80px;
}

/* 通用按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 8px;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--bg-white);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.35);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

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

/* ============================================
   头部导航
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
    transition: all var(--transition-normal);
}

.header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 44px;
    width: auto;
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary-color), #1e40af);
    color: var(--bg-white);
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark-color);
}

/* 导航菜单 */
.nav-list {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav-item {
    position: relative;
}

.nav-link {
    font-size: 0.98rem;
    color: var(--text-dark);
    font-weight: 500;
    padding: 26px 0;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: color var(--transition-fast);
}

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

.nav-link i {
    font-size: 0.7rem;
    margin-left: 2px;
}

/* PC端：隐藏一级导航上的下拉箭头，下拉图标显示在导航名称后面 */
/* .has-submenu>.nav-item-inner>.nav-link i 已删除，保持显示 */

/* PC端：隐藏展开按钮（移动端用） */
.submenu-toggle {
    display: none;
}

/* 二级菜单 */
.submenu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    min-width: 180px;
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    padding: 12px 0;
    margin-top: 12px;
    border: 1px solid var(--gray-lighter);
}

.submenu::before {
    content: '';
    position: absolute;
    top: -9px;
    left: 50%;
    transform: translateX(-50%);
    border: 9px solid transparent;
    border-bottom-color: var(--bg-white);
}

.has-submenu:hover .submenu {
    opacity: 1;
    visibility: visible;
    margin-top: 0;
}

.submenu li a {
    display: block;
    padding: 10px 22px;
    color: var(--text-dark);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.submenu li a:hover {
    background: var(--gray-bg);
    color: var(--primary-color);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    padding: 0;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2.5px;
    background: var(--dark-color);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

/* ============================================
   幻灯片区域
   ============================================ */
.banner {
    padding-top: 72px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 60%, #f1f5f9 100%);
    position: relative;
    overflow: hidden;
}

.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(37, 99, 235, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 30%, rgba(14, 165, 233, 0.03) 0%, transparent 40%);
    pointer-events: none;
}

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

.banner-slides {
    position: relative;
}

.banner-slide {
    display: none;
    animation: fadeSlideIn 0.7s ease;
}

.banner-slide.active {
    display: block;
}

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(25px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.banner-content {
    display: flex;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 20px;
    gap: 80px;
    position: relative;
    z-index: 1;
}

.banner-text {
    flex: 1;
    max-width: 580px;
}

.banner-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(37, 99, 235, 0.08);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 22px;
    letter-spacing: 0.5px;
}

.banner-text h2 {
    font-size: 3.2rem;
    font-weight: 800;
    color: var(--dark-color);
    margin-bottom: 24px;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.banner-text h2 span {
    color: var(--primary-color);
    position: relative;
}

.banner-text p {
    font-size: 1.15rem;
    color: var(--text-gray);
    margin-bottom: 35px;
    line-height: 1.85;
}

.banner-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 45px;
}

.banner-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 34px;
    background: linear-gradient(135deg, var(--primary-color), #1e40af);
    color: var(--bg-white);
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.05rem;
    transition: all var(--transition-normal);
}

.banner-btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(37, 99, 235, 0.35);
}

.banner-btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 34px;
    background: var(--bg-white);
    color: var(--dark-color);
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.05rem;
    border: 1px solid var(--gray-lighter);
    transition: all var(--transition-normal);
}

.banner-btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.1);
    border-color: var(--gray-light);
}

.banner-stats {
    display: flex;
    gap: 50px;
    padding-top: 30px;
    border-top: 1px solid var(--gray-lighter);
}

.banner-stat {
    text-align: left;
}

.banner-stat-number {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
    letter-spacing: -1px;
}

.banner-stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 8px;
}

.banner-image {
    flex: 1;
    max-width: 520px;
    position: relative;
}

.banner-image::before {
    content: '';
    position: absolute;
    top: -30px;
    right: -30px;
    width: 110%;
    height: 110%;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.06), rgba(14, 165, 233, 0.06));
    border-radius: 24px;
    z-index: -1;
}

.banner-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.12);
    transition: transform 0.6s ease;
}

.banner-slide:hover .banner-image img {
    transform: scale(1.02);
}

/* 幻灯片箭头 */
.banner-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 56px;
    height: 56px;
    background: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.1);
    transition: all var(--transition-normal);
    z-index: 10;
    opacity: 0;
    border: 1px solid var(--gray-lighter);
}

.banner-slider:hover .banner-arrow {
    opacity: 1;
}

.banner-arrow:hover {
    background: var(--primary-color);
    color: var(--bg-white);
    transform: translateY(-50%) scale(1.1);
    border-color: var(--primary-color);
}

.banner-arrow i {
    font-size: 1.2rem;
}

.banner-arrow-left {
    left: 28px;
}

.banner-arrow-right {
    right: 28px;
}

/* 幻灯片指示点 */
.banner-dots {
    position: absolute;
    bottom: 35px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.banner-dot {
    width: 10px;
    height: 10px;
    border-radius: 5px;
    background: var(--gray-lighter);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.banner-dot.active {
    width: 36px;
    background: var(--primary-color);
}

/* ============================================
   优势介绍
   ============================================ */
.advantages {
    background: var(--bg-white);
    padding: 85px 0;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.advantage-item {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 28px 22px;
    background: var(--bg-white);
    border-radius: 18px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-lighter);
    position: relative;
    overflow: hidden;
}

.advantage-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.advantage-item:hover::after {
    transform: scaleX(1);
}

.advantage-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(37, 99, 235, 0.1);
    border-color: rgba(37, 99, 235, 0.12);
}

.advantage-icon {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.25);
}

.advantage-icon i {
    font-size: 1.6rem;
    color: var(--bg-white);
}

.advantage-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 6px;
}

.advantage-content p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.5;
}

/* ============================================
   通用区块标题
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header.text-left {
    text-align: left;
}

.section-title {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
    letter-spacing: -0.5px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -14px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-header.text-left .section-title::after {
    left: 0;
    transform: none;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-light);
    margin-top: 26px;
    letter-spacing: 0.3px;
}

/* ============================================
   我们的服务 - 轮播版
   ============================================ */
.services {
    background: var(--gray-bg);
    padding: 100px 0 80px;
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1200px;
    max-width: 90%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-lighter) 20%, var(--gray-lighter) 80%, transparent);
}

.services::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1200px;
    max-width: 90%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-lighter) 20%, var(--gray-lighter) 80%, transparent);
}

/* 服务区域装饰元素 */
.services-decoration {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.03), rgba(59, 130, 246, 0.01));
    pointer-events: none;
}

.services-decoration-1 {
    top: -100px;
    left: -100px;
}

.services-decoration-2 {
    bottom: -150px;
    right: -120px;
    width: 400px;
    height: 400px;
}

.services-slider {
    position: relative;
    overflow: hidden;
    padding: 0 60px;
}

.services-wrapper {
    overflow: hidden;
}

.services-track {
    display: flex;
    gap: 24px;
    transition: transform 0.5s ease;
}

.services-card-wrapper {
    flex: 0 0 calc(25% - 18px);
    min-width: calc(25% - 18px);
}

.service-card {
    flex: 0 0 calc(25% - 18px);
    min-width: calc(25% - 18px);
}

.service-card {
    background: var(--bg-white);
    border-radius: 20px;
    padding: 0;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03), 0 1px 3px rgba(0, 0, 0, 0.02);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border: 1px solid rgba(0, 0, 0, 0.04);
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

/* 卡片顶部光效 */
.service-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(180deg, rgba(37, 99, 235, 0.02), transparent);
    pointer-events: none;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--primary-color));
    background-size: 200% 100%;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(0.65, 0, 0.35, 1);
    opacity: 0;
}

.service-card:hover::before {
    transform: scaleX(1);
    opacity: 1;
    animation: lineFlow 2s ease-in-out infinite;
}

@keyframes lineFlow {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(37, 99, 235, 0.12), 0 8px 24px rgba(0, 0, 0, 0.06);
    border-color: rgba(37, 99, 235, 0.15);
}

.service-card:hover::after {
    background: linear-gradient(180deg, rgba(37, 99, 235, 0.05), transparent);
}

/* 图标区域 - 居中显示 */
.service-icon-wrapper {
    padding: 36px 24px 28px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.service-icon {
    width: 68px;
    height: 68px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.25);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.service-card:hover .service-icon {
    transform: rotate(8deg) scale(1.1);
    box-shadow: 0 12px 32px rgba(37, 99, 235, 0.35);
}

.service-icon i {
    font-size: 1.7rem;
    color: var(--bg-white);
    transition: transform 0.3s ease;
}

.service-card:hover .service-icon i {
    transform: scale(1.1);
}

/* 内容区域 */
.service-content {
    padding: 0 24px 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.service-info {
    text-align: center;
    margin-bottom: 20px;
}

.service-info h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 12px;
    transition: color 0.3s ease;
}

.service-card:hover .service-info h3 {
    color: var(--primary-color);
}

.service-info>p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* 标签区域 */
.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid rgba(0, 0, 0, 0.04);
}

.service-tags li {
    padding: 6px 3px;
    background: rgba(37, 99, 235, 0.04);
    color: var(--primary-color);
    border-radius: 5px;
    font-size: 0.82rem;
    font-weight: 320;
    transition: all 0.3s ease;
    border: 1px solid rgba(37, 99, 235, 0.08);
    /* 一行两个，宽度限制 */
    flex: 0 0 calc(50% - 4px);
    text-align: center;
    /* 文字溢出省略号 */
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.service-tags li:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--bg-white);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

/* 服务轮播箭头 */
.services-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 54px;
    height: 54px;
    background: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(0, 0, 0, 0.03);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 10;
    border: none;
    cursor: pointer;
    color: var(--dark-color);
}

.services-arrow:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--bg-white);
    transform: translateY(-50%) scale(1.12);
    box-shadow: 0 8px 30px rgba(37, 99, 235, 0.35);
}

.services-arrow:active {
    transform: translateY(-50%) scale(1.05);
}

.services-arrow i {
    font-size: 1.1rem;
}

.services-arrow-left {
    left: 0;
}

.services-arrow-right {
    right: 0;
}

/* 服务轮播指示点 */
.services-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 35px;
}

.services-dot {
    width: 10px;
    height: 10px;
    border-radius: 5px;
    background: var(--gray-lighter);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.services-dot.active {
    width: 36px;
    background: var(--primary-color);
}

/* ============================================
   产品中心
   ============================================ */
.products {
    background: var(--bg-white);
    padding: 90px 0 70px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.products .section-footer {
    text-align: center;
    margin-top: 40px;
}

.products .section-footer .btn {
    padding: 14px 36px;
    font-size: 1rem;
}

.product-card {
    background: var(--bg-white);
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-lighter);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
    border-color: rgba(37, 99, 235, 0.12);
}

.product-image {
    position: relative;
    height: 180px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--gray-bg), var(--gray-lighter));
}

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

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

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.5), rgba(14, 165, 233, 0.5));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

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

.product-overlay .btn {
    padding: 12px 28px;
    background: var(--bg-white);
    color: var(--primary-color);
    border-radius: 10px;
    font-weight: 600;
    transition: all var(--transition-normal);
}

.product-overlay .btn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.product-info {
    padding: 22px;
}

.product-info h3 {
    font-size: 1.08rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 8px;
}

.product-info p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* ============================================
   关于我们
   ============================================ */
.about {
    background: linear-gradient(180deg, var(--gray-bg) 0%, #e2e8f0 50%, var(--gray-bg) 100%);
    padding: 90px 0;
    position: relative;
}

.about::before,
.about::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-lighter) 20%, var(--gray-lighter) 80%, transparent);
}

.about::before {
    top: 0;
}

.about::after {
    bottom: 0;
}

.about-wrapper {
    display: flex;
    gap: 70px;
    align-items: center;
}

.about-content {
    flex: 1;
}

.about-text {
    margin-bottom: 36px;
}

.about-text p {
    font-size: 1.02rem;
    color: var(--text-gray);
    line-height: 1.85;
    margin-bottom: 16px;
}

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

.about-feature {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 24px 16px;
    background: var(--bg-white);
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
    border: 1px solid var(--gray-lighter);
    transition: all var(--transition-normal);
}

.about-feature:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.1);
    border-color: rgba(37, 99, 235, 0.15);
}

.feature-number {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
    letter-spacing: -1px;
}

.feature-label {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-top: 8px;
}

.about-image {
    flex: 1;
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: 18px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
}

.about-image::before {
    content: '';
    position: absolute;
    top: -18px;
    right: -18px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--gray-lighter);
    border-radius: 18px;
    z-index: -1;
}

/* ============================================
   资讯中心 - 轮播版
   ============================================ */
.news {
    background: var(--gray-bg);
    padding: 90px 0 70px;
    position: relative;
}

.news::before,
.news::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-lighter) 20%, var(--gray-lighter) 80%, transparent);
}

.news::before {
    top: 0;
}

.news::after {
    bottom: 0;
}

.news-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 45px;
}

.news-tab {
    padding: 10px 26px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-gray);
    background: var(--bg-white);
    border: 1px solid var(--gray-lighter);
    border-radius: 25px;
    transition: all var(--transition-normal);
}

.news-tab:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.04);
}

.news-tab.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--bg-white);
    border-color: transparent;
}

.news-content {
    position: relative;
}

.news-list {
    display: none;
}

.news-list.active {
    display: block;
}

/* 轮播容器 */
.news-carousel-wrapper {
    position: relative;
    padding: 0 50px;
}

.news-carousel {
    overflow: hidden;
    position: relative;
}

.news-carousel-track {
    display: flex;
    gap: 20px;
    transition: transform 0.5s ease;
}

/* 新闻卡片 */
.news-card {
    flex: 0 0 calc(20% - 16px);
    min-width: calc(20% - 16px);
    background: var(--bg-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border: 1px solid var(--gray-lighter);
    position: relative;
}

.news-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.news-card:hover::before {
    transform: scaleX(1);
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(37, 99, 235, 0.15);
    border-color: rgba(37, 99, 235, 0.2);
}

/* 日期样式 */
.news-card .news-date {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--bg-white);
    padding: 16px 18px;
}

.news-date-day {
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1;
}

.news-dateYM {
    font-size: 0.85rem;
    opacity: 0.9;
    text-align: left;
    line-height: 1.3;
}

/* 卡片内容 */
.news-card-body {
    padding: 20px;
}

.news-card-body h3 {
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 12px;
    line-height: 1.5;
    min-height: 2.9em;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.3s ease;
}

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

.news-card-body h3 a {
    color: inherit;
}

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

.news-card-body p {
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    border-top: 1px solid var(--gray-lighter);
}

.news-tag {
    font-size: 0.75rem;
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.08);
    padding: 4px 10px;
    border-radius: 4px;
    font-weight: 500;
}

.news-link {
    font-size: 0.82rem;
    color: var(--primary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: all 0.3s ease;
}

.news-link:hover {
    color: var(--primary-dark);
    gap: 8px;
}

.news-link i {
    font-size: 0.7rem;
    transition: transform 0.3s ease;
}

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

/* 轮播导航 */
.news-carousel-nav {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 10;
}

.carousel-btn {
    width: 48px;
    height: 48px;
    background: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    pointer-events: auto;
    border: 1px solid var(--gray-lighter);
    color: var(--dark-color);
}

.carousel-btn:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--bg-white);
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(37, 99, 235, 0.35);
}

.carousel-btn i {
    font-size: 1rem;
}

.carousel-dots {
    display: none;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--gray-lighter);
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-dot.active {
    background: var(--primary-color);
    transform: scale(1.2);
}

/* ============================================
   项目开发流程
   ============================================ */
.process {
    background: linear-gradient(180deg, var(--bg-white) 0%, var(--gray-bg) 100%);
    padding: 90px 0 70px;
    position: relative;
}

.process::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-lighter) 20%, var(--gray-lighter) 80%, transparent);
}

.process::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-lighter) 20%, var(--gray-lighter) 80%, transparent);
}

.process .section-title {
    color: var(--dark-color);
}

.process .section-title::after {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.process .section-subtitle {
    color: var(--text-light);
}

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

.process-timeline {
    display: flex;
    justify-content: space-between;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 46px;
    left: 10%;
    right: 10%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--primary-color), var(--secondary-color));
    background-size: 300% 100%;
    border-radius: 2px;
    animation: gradientFlow 3s linear infinite;
}

@keyframes gradientFlow {
    0% {
        background-position: 0% 50%;
    }

    100% {
        background-position: 300% 50%;
    }
}

.process-step {
    flex: 1;
    text-align: center;
    position: relative;
    z-index: 2;
    padding: 0 10px;
}

.process-icon {
    width: 92px;
    height: 92px;
    margin: 0 auto 28px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: 0 12px 35px rgba(37, 99, 235, 0.3);
}

.process-icon::before {
    content: '';
    position: absolute;
    inset: -8px;
    border: 2px dashed rgba(37, 99, 235, 0.2);
    border-radius: 50%;
    animation: rotate 15s linear infinite;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.process-icon i {
    font-size: 2.2rem;
    color: var(--bg-white);
}

.process-number {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 32px;
    height: 32px;
    background: var(--accent-color);
    color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 700;
}

.process-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.process-content p {
    font-size: 0.92rem;
    color: var(--text-light);
    line-height: 1.7;
    max-width: 170px;
    margin: 0 auto;
}

/* ============================================
   底部
   ============================================ */
.footer {
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
}

.footer-main {
    padding: 70px 0 45px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.7fr 0.7fr 0.7fr 1.4fr;
    gap: 30px;
}

.footer-about .footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
}

.footer-about .logo-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--bg-white);
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
}

.footer-about .logo-text {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--bg-white);
}

.footer-about p {
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.55);
    line-height: 1.8;
    margin-bottom: 22px;
}

.footer-social {
    display: flex;
    gap: 10px;
}

.social-item {
    position: relative;
}

.social-item a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.social-item a:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    transform: translateY(-3px);
}

.social-qrcode {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-white);
    padding: 15px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 100;
    margin-bottom: 15px;
    min-width: 160px;
    width: 160px;
    height: auto;
}

.social-qrcode::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 8px solid transparent;
    border-top-color: var(--bg-white);
}

.social-item:hover .social-qrcode {
    opacity: 1;
    visibility: visible;
}

.social-qrcode img {
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    display: block;
}

.social-qrcode span {
    display: block;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-dark);
    margin-top: 10px;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1.15rem;
    color: var(--bg-white);
    margin-bottom: 22px;
    position: relative;
    padding-bottom: 12px;
}

.footer-links h4::after,
.footer-contact h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 35px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul li a {
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.55);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-links ul li a::before {
    content: '';
    width: 5px;
    height: 5px;
    background: var(--primary-color);
    border-radius: 50%;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.footer-links ul li a:hover {
    color: var(--bg-white);
    padding-left: 6px;
}

.footer-links ul li a:hover::before {
    opacity: 1;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 14px;
    color: rgba(255, 255, 255, 0.55);
    font-size: 0.92rem;
}

.contact-item i {
    color: var(--primary-color);
    font-size: 1rem;
    margin-top: 3px;
    width: 18px;
}

.contact-qrcode {
    display: flex;
    gap: 18px;
    margin-top: 22px;
}

.qrcode-item {
    text-align: center;
}

.qrcode-box {
    width: 90px;
    height: 90px;
    background: var(--bg-white);
    border-radius: 10px;
    padding: 6px;
    margin-bottom: 8px;
}

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

.qrcode-item span {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.45);
}

.footer-bottom {
    background: rgba(0, 0, 0, 0.25);
    padding: 20px 0;
}

.footer-bottom .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.footer-bottom p {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.45);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.45);
    transition: color var(--transition-fast);
}

.footer-bottom a:hover {
    color: var(--bg-white);
}

/* ============================================
   悬浮在线客服
   ============================================ */
.online-service {
    position: fixed;
    right: 20px;
    bottom: 100px;
    z-index: 999;
}

.service-toggle {
    width: 54px;
    height: 54px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 6px 24px rgba(37, 99, 235, 0.4);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    gap: 2px;
}

.service-toggle i {
    font-size: 1.3rem;
    color: var(--bg-white);
}

.service-toggle span {
    font-size: 0.65rem;
    color: var(--bg-white);
    font-weight: 500;
}

.service-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(37, 99, 235, 0.5);
}

.service-panel {
    position: absolute;
    right: 70px;
    bottom: 0;
    width: 280px;
    background: var(--bg-white);
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateX(20px);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    overflow: hidden;
}

.online-service.active .service-panel {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.online-service.active .service-toggle {
    background: linear-gradient(135deg, #ef4444, #f87171);
}

.service-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 18px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--bg-white);
}

.service-panel-header h4 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.service-panel-header h4 i {
    font-size: 1.1rem;
}

.service-close {
    width: 28px;
    height: 28px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.service-close:hover {
    background: rgba(255, 255, 255, 0.35);
    transform: rotate(90deg);
}

.service-close i {
    font-size: 0.85rem;
}

.service-panel-content {
    padding: 16px;
}

.service-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px;
    background: var(--gray-bg);
    border-radius: 10px;
    margin-bottom: 10px;
    transition: all 0.3s ease;
}

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

.service-item:hover {
    background: rgba(37, 99, 235, 0.06);
    transform: translateX(4px);
}

.service-item-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.service-item-icon i {
    font-size: 1rem;
    color: var(--bg-white);
}

.service-item-info {
    flex: 1;
    min-width: 0;
}

.service-item-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-light);
    margin-bottom: 3px;
}

.service-item-value {
    font-size: 0.92rem;
    color: var(--dark-color);
    font-weight: 600;
    text-decoration: none;
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

a.service-item-value:hover {
    color: var(--primary-color);
}

.wechat-qr img {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.wechat-qr-center {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.wechat-title {
    font-size: 14px;
    color: #666;
    margin-bottom: 8px;
}

.wechat-qr-center img {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.service-qrcode .service-item-icon {
    background: linear-gradient(135deg, #10b981, #34d399);
}

.service-qrcode .qrcode-box {
    width: 75px;
    height: 75px;
    background: var(--bg-white);
    border-radius: 8px;
    padding: 4px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.service-qrcode .qrcode-box img {
    width: 100%;
    height: 100%;
    border-radius: 4px;
}

/* 回到顶部 */
.back-to-top {
    position: fixed;
    right: 20px;
    bottom: 30px;
    width: 48px;
    height: 48px;
    background: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.35);
}

.back-to-top i {
    font-size: 1rem;
    color: var(--dark-color);
    transition: color 0.3s ease;
}

.back-to-top:hover i {
    color: var(--bg-white);
}

/* ============================================
   响应式设计
   ============================================ */

/* 桌面大屏 - 4列 */
@media (min-width: 1281px) {
    .container {
        max-width: 1280px;
        padding: 0 30px;
    }

    .services-slider {
        padding: 0 80px;
    }

    .services-card-wrapper {
        flex: 0 0 calc(25% - 18px) !important;
        min-width: calc(25% - 18px) !important;
    }

    .service-card {
        flex: 0 0 calc(25% - 18px) !important;
        min-width: calc(25% - 18px) !important;
    }
}

/* 平板大屏 - 3列 */
@media (max-width: 1280px) {
    .container {
        max-width: 100%;
        padding: 0 24px;
    }

    .services-slider {
        padding: 0 70px;
    }

    .services-card-wrapper {
        flex: 0 0 calc(33.333% - 16px) !important;
        min-width: calc(33.333% - 16px) !important;
    }

    .service-card {
        flex: 0 0 calc(33.333% - 16px) !important;
        min-width: calc(33.333% - 16px) !important;
    }

    .news-card {
        flex: 0 0 calc(33.333% - 14px);
        min-width: calc(33.333% - 14px);
    }
}

@media (max-width: 1100px) {
    .services-slider {
        padding: 0 55px;
    }

    .services-card-wrapper {
        flex: 0 0 calc(50% - 14px) !important;
        min-width: calc(50% - 14px) !important;
    }

    .service-card {
        flex: 0 0 calc(50% - 14px) !important;
        min-width: calc(50% - 14px) !important;
    }
}

@media (max-width: 1024px) {
    .banner-content {
        padding: 55px 20px;
        gap: 50px;
    }

    .banner-text h2 {
        font-size: 2.5rem;
    }

    .banner-stats {
        gap: 28px;
    }

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

    .services-slider {
        padding: 0 55px;
    }

    .services-card-wrapper {
        flex: 0 0 calc(50% - 14px) !important;
        min-width: calc(50% - 14px) !important;
    }

    .service-card {
        flex: 0 0 calc(50% - 14px) !important;
        min-width: calc(50% - 14px) !important;
    }

    .service-icon-wrapper {
        padding: 28px 20px 20px;
    }

    .service-icon {
        width: 60px;
        height: 60px;
    }

    .service-content {
        padding: 0 20px 22px;
    }

    .service-content {
        padding: 0 20px 20px;
    }

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

    .news-carousel-wrapper {
        padding: 0 40px;
    }

    .news-card {
        flex: 0 0 calc(50% - 10px);
        min-width: calc(50% - 10px);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 35px;
    }

    .process-timeline::before {
        display: none;
    }

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

    .process-step:last-child {
        grid-column: 2;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    .header-inner {
        height: 62px;
    }

    .logo-icon {
        width: 38px;
        height: 38px;
        font-size: 1.3rem;
    }

    .logo-text {
        font-size: 1.25rem;
    }

    .nav {
        position: fixed;
        top: 62px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        padding: 20px;
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

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

    .nav-list {
        flex-direction: column;
        gap: 0;
    }

    .nav-item {
        width: 100%;
    }

    .nav-link {
        padding: 14px 0;
        border-bottom: 1px solid var(--gray-lighter);
        flex: 1;
    }

    .nav-item-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    /* 移动端展开按钮 */
    .submenu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 32px;
        height: 32px;
        background: var(--gray-bg);
        border: none;
        border-radius: 6px;
        cursor: pointer;
        margin-left: 12px;
        transition: all var(--transition-fast);
        flex-shrink: 0;
    }

    .submenu-toggle i {
        font-size: 12px;
        color: var(--text-gray);
        transition: transform var(--transition-fast);
    }

    .has-submenu.active>.nav-item-inner>.submenu-toggle i {
        transform: rotate(180deg);
    }

    .submenu {
        position: static;
        transform: none;
        box-shadow: none;
        background: var(--gray-bg);
        display: none;
        padding: 10px 20px;
        border-radius: 8px;
        margin-top: 8px;
    }

    .submenu::before {
        display: none;
    }

    .has-submenu.active .submenu {
        display: block;
    }

    .submenu li a {
        padding: 12px 16px;
        border-radius: 6px;
    }

    .submenu li a:hover {
        background: var(--bg-white);
    }

    .nav-link i {
        display: none;
    }

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

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .banner {
        padding-top: 62px;
    }

    .banner-content {
        flex-direction: column;
        padding: 40px 20px;
        gap: 35px;
        text-align: center;
    }

    .banner-text {
        max-width: 100%;
    }

    .banner-text h2 {
        font-size: 2rem;
    }

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

    .banner-buttons {
        justify-content: center;
    }

    .banner-stats {
        justify-content: center;
        flex-wrap: wrap;
    }

    .banner-image {
        max-width: 100%;
    }

    .banner-image img {
        width: 100%;
        height: auto;
        max-height: 300px;
        object-fit: cover;
    }

    .banner-arrow {
        display: none;
    }

    .advantages {
        padding: 60px 0;
    }

    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .advantage-item {
        padding: 22px 20px;
    }

    .section-header {
        margin-bottom: 35px;
        padding: 0 15px;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section-subtitle {
        font-size: 0.9rem;
        padding: 0 10px;
    }

    /* 服务区域 - 移动端优化 */
    .services {
        padding: 50px 0 50px;
    }

    .services-decoration {
        display: none;
    }

    .services-slider {
        padding: 0 50px;
    }

    .services-card-wrapper {
        flex: 0 0 100% !important;
        min-width: 100% !important;
    }

    .service-card {
        flex: 0 0 calc(100% - 0px) !important;
        min-width: calc(100% - 0px) !important;
        border-radius: 16px;
        margin: 0 5px;
    }

    .service-icon-wrapper {
        padding: 24px 20px 18px;
    }

    .service-icon {
        width: 56px;
        height: 56px;
        border-radius: 14px;
    }

    .service-content {
        padding: 0 18px 18px;
    }

    .service-info h3 {
        font-size: 1.1rem;
    }

    .service-info>p {
        font-size: 0.85rem;
        line-height: 1.6;
    }

    .service-tags {
        padding-top: 14px;
        gap: 6px;
    }

    .service-tags li {
        flex: 0 0 calc(50% - 3px);
        padding: 5px 2px;
        font-size: 0.78rem;
    }

    /* 移动端箭头优化 */
    .services-arrow {
        width: 42px;
        height: 42px;
        box-shadow: 0 3px 15px rgba(0, 0, 0, 0.1);
    }

    .services-arrow i {
        font-size: 0.95rem;
    }

    /* 指示点移动端优化 */
    .services-dots {
        margin-top: 24px;
    }

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

    .products {
        padding: 60px 0 40px;
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }

    .product-image {
        height: 130px;
    }

    .product-info {
        padding: 14px;
    }

    .product-info h3 {
        font-size: 0.98rem;
    }

    .product-info p {
        font-size: 0.82rem;
    }

    .about {
        padding: 60px 0;
    }

    .about-wrapper {
        flex-direction: column;
        gap: 35px;
    }

    .about-features {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .about-feature {
        padding: 22px 16px;
    }

    .feature-number {
        font-size: 2.2rem;
    }

    .feature-label {
        font-size: 0.9rem;
    }

    .news {
        padding: 60px 0 60px;
    }

    .news-tabs {
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
    }

    .news-tab {
        padding: 8px 18px;
        font-size: 0.92rem;
    }

    .news-carousel-wrapper {
        padding: 0 45px;
    }

    .news-card {
        flex: 0 0 calc(50% - 10px);
        min-width: calc(50% - 10px);
    }

    .news-card-body {
        padding: 14px;
    }

    .news-card-body h3 {
        font-size: 0.9rem;
        min-height: 2.7em;
        margin-bottom: 8px;
    }

    .news-card-body p {
        font-size: 0.8rem;
        margin-bottom: 12px;
    }

    .news-card-footer {
        padding-top: 10px;
    }

    .news-date {
        padding: 12px 14px;
    }

    .news-date-day {
        font-size: 1.8rem;
    }

    .news-dateYM {
        font-size: 0.75rem;
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
    }

    .carousel-dots {
        bottom: -25px;
    }

    .process {
        padding: 60px 0 40px;
    }

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

    .process-step:last-child {
        grid-column: span 2;
        max-width: 50%;
        margin: 0 auto;
    }

    .process-icon {
        width: 72px;
        height: 72px;
    }

    .process-icon i {
        font-size: 1.7rem;
    }

    .process-content h3 {
        font-size: 1.1rem;
    }

    .process-content p {
        font-size: 0.85rem;
    }

    .footer-main {
        padding: 50px 0 30px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .footer-about {
        text-align: center;
    }

    .footer-about .footer-logo {
        justify-content: center;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-links {
        text-align: center;
    }

    .footer-links h4::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .footer-links ul li a {
        justify-content: center;
    }

    .footer-links ul li a::before {
        display: none;
    }

    .footer-contact {
        text-align: center;
    }

    .footer-contact h4::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .contact-item {
        justify-content: center;
    }

    .contact-qrcode {
        justify-content: center;
    }

    .footer-bottom .container {
        justify-content: center;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .banner-content {
        padding: 30px 15px;
        gap: 28px;
    }

    .banner-text h2 {
        font-size: 1.75rem;
    }

    .banner-text p {
        font-size: 0.95rem;
    }

    .banner-btn-primary,
    .banner-btn-secondary {
        padding: 12px 22px;
        font-size: 0.95rem;
    }

    .banner-stats {
        gap: 18px;
    }

    .banner-stat-number {
        font-size: 1.6rem;
    }

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

    .advantage-icon {
        margin: 0 auto;
    }

    .section-title {
        font-size: 1.7rem;
    }

    .section-subtitle {
        font-size: 0.95rem;
    }

    .service-card {
        padding: 24px;
    }

    .service-icon {
        width: 52px;
        height: 52px;
    }

    .service-icon i {
        font-size: 1.35rem;
    }

    .service-info h3 {
        font-size: 1.1rem;
    }

    .service-info>p {
        font-size: 0.9rem;
    }

    .service-tags li {
        padding: 6px 12px;
        font-size: 0.82rem;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .product-image {
        height: 155px;
    }

    .news {
        padding: 50px 0 50px;
    }

    .news-carousel-wrapper {
        padding: 0 15px;
    }

    .news-card {
        flex: 0 0 calc(100% - 0px);
        min-width: calc(100% - 0px);
    }

    .news-card-body {
        padding: 12px;
    }

    .news-card-body h3 {
        font-size: 0.95rem;
        min-height: auto;
        margin-bottom: 8px;
    }

    .news-card-body p {
        font-size: 0.82rem;
        -webkit-line-clamp: 2;
    }

    .news-date {
        padding: 10px 12px;
    }

    .news-date-day {
        font-size: 1.5rem;
    }

    .news-dateYM {
        font-size: 0.7rem;
    }

    .carousel-btn {
        width: 36px;
        height: 36px;
    }

    .carousel-btn i {
        font-size: 0.85rem;
    }

    .carousel-dots {
        bottom: -20px;
    }

    .process-timeline {
        grid-template-columns: 1fr;
    }

    .process-step {
        max-width: 100%;
    }

    .process-step:last-child {
        grid-column: auto;
        max-width: 100%;
    }

    .process-icon {
        width: 78px;
        height: 78px;
    }

    .footer-bottom p {
        font-size: 0.8rem;
    }

    /* 悬浮客服 - 移动端优化 */
    .online-service {
        right: 12px;
        bottom: 85px;
    }

    .service-toggle {
        width: 48px;
        height: 48px;
    }

    .service-toggle i {
        font-size: 1.15rem;
    }

    .service-toggle span {
        display: none;
    }

    .service-panel {
        right: 62px;
        width: 255px;
    }

    .service-panel-header {
        padding: 14px 16px;
    }

    .service-panel-header h4 {
        font-size: 0.95rem;
    }

    .service-panel-content {
        padding: 14px;
    }

    .service-item {
        padding: 10px;
        gap: 12px;
    }

    .service-item-icon {
        width: 38px;
        height: 38px;
        border-radius: 9px;
    }

    .service-item-icon i {
        font-size: 0.9rem;
    }

    .service-item-label {
        font-size: 0.72rem;
    }

    .service-item-value {
        font-size: 0.88rem;
    }

    .service-qrcode .qrcode-box {
        width: 65px;
        height: 65px;
    }

    .back-to-top {
        right: 12px;
        bottom: 20px;
        width: 44px;
        height: 44px;
    }

    .back-to-top i {
        font-size: 0.9rem;
    }
}

/* ============================================
   动画效果
   ============================================ */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.advantage-item,
.service-card,
.product-card,
.news-item {
    animation: slideUp 0.6s ease;
}

.advantage-item:nth-child(2) {
    animation-delay: 0.1s;
}

.advantage-item:nth-child(3) {
    animation-delay: 0.2s;
}

.advantage-item:nth-child(4) {
    animation-delay: 0.3s;
}

.service-card:nth-child(2) {
    animation-delay: 0.15s;
}

.service-card:nth-child(3) {
    animation-delay: 0.3s;
}

.service-card:nth-child(4) {
    animation-delay: 0.45s;
}

.product-card:nth-child(2) {
    animation-delay: 0.1s;
}

.product-card:nth-child(3) {
    animation-delay: 0.2s;
}

.product-card:nth-child(4) {
    animation-delay: 0.3s;
}

.product-card:nth-child(5) {
    animation-delay: 0.4s;
}

.product-card:nth-child(6) {
    animation-delay: 0.5s;
}

.product-card:nth-child(7) {
    animation-delay: 0.6s;
}

.product-card:nth-child(8) {
    animation-delay: 0.7s;
}

.news-item:nth-child(2) {
    animation-delay: 0.1s;
}

.news-item:nth-child(3) {
    animation-delay: 0.2s;
}

.news-item:nth-child(4) {
    animation-delay: 0.3s;
}

.news-item:nth-child(5) {
    animation-delay: 0.4s;
}