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

html {
    scroll-behavior: smooth;
}

/* 颜色变量（参考 gczhida.com 配色） */
:root {
    --color-primary: #ff4d4f;
    --color-primary-600: #d9363e;
    --color-primary-400: #ff7875;
    --color-accent: #ff7a45;
    --color-dark: #2e2d2b;
    --color-dark-700: #2a2a2a;
    --color-bg: #ffffff;
    --color-bg-subtle: #fff7f5;
    --color-text: #2b2b2b;
    --color-text-muted: #595959;
    --color-text-muted-2: #8c8c8c;
    --color-border: #f0f0f0;
    --color-footer-text: #bfbfbf;
    --gradient-hero: linear-gradient(135deg, #ff7a45 0%, #ff4d4f 100%);
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(46, 45, 43, 0.8);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    height: 60px;
    gap: 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-img {
    height: 35px;
    width: auto;
    object-fit: contain;
}

.nav-logo h2 {
    color: white;
    font-size: 1.5rem;
    margin: 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 3rem;
    margin: 0;
    padding: 0;
    margin-left: 40px;
    align-items: center;
}

.nav-item {
    position: relative;
    display: flex;
    align-items: center;
}

.has-submenu > .nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.submenu-caret {
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid #ffffff;
    transition: transform 0.2s ease;
    vertical-align: middle;
}

.has-submenu.open > .submenu-caret {
    transform: rotate(180deg);
}

.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    padding: 10px 0;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    display: none;
    z-index: 1001;
}

.submenu li {
    list-style: none;
}

.submenu a {
    display: block;
    padding: 10px 16px;
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.95rem;
    transition: background 0.2s ease, color 0.2s ease;
}

.submenu a:hover {
    background: var(--color-bg-subtle);
    color: #e70012;
}

/* Hover 展开 - 桌面端 */
.has-submenu:hover > .submenu {
    display: block;
}

/* 顶部变为浅色背景时的导航样式 */
.navbar.scrolled .nav-link {
    color: var(--color-text);
}

.navbar.scrolled .nav-link:hover {
    color: #e70012;
}

.navbar.scrolled .submenu-caret {
    border-top-color: var(--color-text);
}

.navbar.scrolled .submenu a {
    color: var(--color-text);
}

.navbar.scrolled .submenu a:hover {
    color: #e70012;
}

.nav-link {
    text-decoration: none;
    color: white;
    font-size: 1rem;
    transition: color 0.3s ease;
    position: relative;
    padding: 0;
    height: 60px;
    display: inline-flex;
    align-items: center;
}

.nav-link:hover {
    color: #e70012;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #e70012;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* 登录注册区域 */
.nav-auth {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
}

.auth-link {
    color: white;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.auth-link:hover {
    color: #e70012;
}

.auth-separator {
    color: white;
    font-size: 0.9rem;
    margin: 0 0.2rem;
}

/* 企业微信二维码弹窗 */
.qr-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    align-items: center;
    justify-content: center;
}

.qr-modal-content {
    background-color: white;
    margin: 0;
    padding: 2rem;
    border-radius: 15px;
    width: 90%;
    max-width: 400px;
    text-align: center;
    position: relative;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.qr-close {
    position: absolute;
    right: 15px;
    top: 15px;
    color: #aaa;
    font-size: 28px;
    cursor: pointer;
    transition: color 0.3s ease;
}

.qr-close:hover {
    color: #333;
}

.qr-modal-content h3 {
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.qr-code {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.qr-code img {
    width: 200px;
    height: 200px;
    border: 1px solid #e9ecef;
    border-radius: 10px;
    padding: 10px;
    background: white;
    display: block;
    margin: 0 auto;
}

/* 支付弹窗二维码尺寸与居中（仅作用于新闻页支付弹窗） */
#payQrImage {
    width: 178px;
    height: 178px;
    display: block;
    margin: 0 auto;
}

.qr-code p {
    color: #666;
    font-size: 0.9rem;
    margin: 0;
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: white;
    margin: 3px 0;
    transition: 0.3s;
}

/* 首页横幅 */
.hero {
    background: url('../images/index_banner.jpg') center/cover no-repeat;
    min-height: 100vh;
    display: flex;
    align-items: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    position: relative;
    z-index: 3;
    min-height: 100vh;
    padding-top: 20vh;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    color: #ffffff;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    line-height: 1.6;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    color: #ffffff;
}

.hero-buttons {
    display: flex;
    gap: 126px;
    justify-content: center;
}

.btn {
    width: 185px;
    height: 55px;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary {
    background: #e70012;
    color: #fff;
    border: none;
    box-shadow: 0 8px 25px rgba(231, 0, 18, 0.3);
}

.btn-primary:hover {
    background: #cc0010;
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(231, 0, 18, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(255, 255, 255, 0.2);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 1s ease-out 0.5s both;
}

.tech-animation {
    display: flex;
    gap: 2rem;
    font-size: 4rem;
    opacity: 0.8;
}

.tech-animation i {
    animation: float 3s ease-in-out infinite;
}

.tech-animation i:nth-child(2) {
    animation-delay: 0.5s;
}

.tech-animation i:nth-child(3) {
    animation-delay: 1s;
}

/* 通用章节样式 */
section {
    padding: 100px 0;
}

/* 首页服务区块：缩小上下间距为原来的一半 */
.services {
    padding: 50px 0 0;
}

/* 媒体变现（meiti1-4）区块：缩小标题与网格上下间距 */
#monetization .section-header {
    margin-bottom: 0;
    margin-top: 50px;
}

#monetization .services-grid {
    row-gap: 0;
    gap: 0.5rem;
    justify-content: center;
}

/* 进一步压缩媒体变现区块整体上下内边距 */
#monetization {
    padding: 0 0 30px 0;
}

/* 压缩媒体变现区块卡片高度，减少上下相邻图片距离 */
#monetization .service-card {
    height: 440px;
    margin-top: 0;
}

#monetization .service-card-bg {
    height: 440px;
}

#monetization .services-grid {
    margin-top: 0;
}

/* 下调卡片底部内容区内边距，进一步压缩视觉留白 */
#monetization .service-card-content {
    padding: 1.25rem;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

/* 所有区块副标题去除加粗 */
.section-header p {
}

/* 区块标题与副标题字号：广告投放/媒体变现 */
#advertising .section-header h2,
#monetization .section-header h2 {
    font-size: 36px;
}

#advertising .section-header p,
#monetization .section-header p {
    font-size: 18px;
}

/* 区块标题与副标题字号：技术支持 */
#support .section-header h2 {
    font-size: 36px;
}

#support .section-header p {
    font-size: 18px;
}

/* 关于我们区块的标题样式 */
.about-text h2,
.company-intro h2 {
    color: #e70012;
    font-size: 3.2rem;
    margin-bottom: 0.2rem;
    text-align: left;
    position: relative;
    font-weight: normal;
    line-height: 1.2;
}

.company-intro h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 90px;
    height: 4px;
    background-color: #000;
    border-radius: 2px;
}

.company-intro h2::before {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: #000;
    border-radius: 0.5px;
}

.company-intro .intro-text p {
    text-align: left;
    margin-bottom: 20px;
    line-height: 1.6;
    color: #333;
}

.company-intro .intro-text h3 {
    color: #e70012;
    font-size: 1.8rem;
    margin: 30px 0 15px 0;
    text-align: left;
}

.company-intro .intro-text ul {
    margin-bottom: 20px;
    padding-left: 0;
    list-style: none;
}

.company-intro .intro-text li {
    margin-bottom: 10px;
    line-height: 1.6;
    color: #333;
    position: relative;
    padding-left: 20px;
}

.company-intro .intro-text li::before {
    content: '▸';
    color: #e70012;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.company-intro .intro-text strong {
    color: #e70012;
    font-weight: bold;
}

.about-subtitle {
    color: #333;
    font-size: 1.4rem;
    margin-bottom: 1rem;
    text-align: left;
}

.about-description {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-top: 0;
    margin-bottom: 2rem;
    color: #333;
    text-shadow: none;
    text-align: left;
}

/* 关于我们 */
.about {
    background: linear-gradient(135deg, #f0f8ff 0%, #e6f3ff 100%);
    position: relative;
    padding: 100px 0;
}

/* 添加背景图片到右侧 */
.about::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 60%;
    height: 100%;
    background: url('../images/index_aboutus.jpg') center/cover no-repeat;
    z-index: 1;
}

/* 当有company-intro时，隐藏about的背景图 */
.company-intro ~ .about::after,
.about:has(.company-intro)::after {
    display: none;
}

/* 公司简介区块背景图 */
.company-intro {
    position: relative;
    padding: 80px 0;
    width: 100%;
    margin-top: 0;
    overflow: hidden;
    min-height: 760px !important;
    background: url('../images/index_aboutus.jpg') center top no-repeat;
    background-size: 100% auto;
    background-position: center 0;
    background-attachment: scroll;
}

/* 确保背景图片最小高度760px */
.company-intro::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: max(100%, 760px);
    min-height: 760px;
    background: url('../images/index_aboutus.jpg') center top no-repeat;
    background-size: 100% auto;
    background-position: center 0;
    z-index: 1;
}

/* 当页面宽度小于1500px时，背景图等比缩放 */
@media (max-width: 1499px) {
    .company-intro {
        background-size: cover !important;
        background-position: center center !important;
    }
    
    .company-intro::before {
        height: max(100%, 760px);
        min-height: 760px;
        background-size: cover !important;
        background-position: center center !important;
    }
}

/* 媒体变现页面图片平滑过渡 */
.monetization-page .detailed-services img {
    transition: opacity 0.3s ease;
}

/* 媒体变现页面响应式图片样式 */
@media (max-width: 819px) {
    .monetization-page .detailed-services {
        padding: 0; /* 减少上下padding 150px (原来是150px) */
    }
}

.company-intro .container {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
}

.company-intro .intro-text {
    background: transparent;
    border: none;
    border-radius: 8px;
    padding: 40px;
    max-width: 600px;
    margin-left: 60px;
    margin-top: 0px;
    box-shadow: none;
}

.about .container {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: flex-start;
    min-height: 500px;
    padding-top: 80px;
}

.about-content {
    display: block;
    margin: 0;
    text-align: left;
}

.about-text {
    max-width: 520px;
}


.stats {
    display: flex;
    align-items: stretch;
    margin-top: 3rem;
    background: white;
    border-radius: 0 12px 0 0;
    overflow: hidden;
    max-width: 1000px;
    width: 1000px;
    margin-left: 0;
}

.stat-item {
    display: flex;
    flex-direction: column;
    justify-content: center;
    flex: 1;
    text-align: center;
    position: relative;
}

.stat-item:first-child {
    flex: 1;
    background: #e70012;
}

.stat-item:not(:first-child) {
    background: white;
}

.stat-item-with-divider {
    display: flex;
    flex-direction: column;
    justify-content: center;
    flex: 1;
    text-align: center;
    position: relative;
    background: white;
}

.stat-item-with-divider .stat-number {
    color: #e70012;
}

.stat-item-with-divider .stat-label {
    color: #333;
}

.stat-number {
    font-size: 3.2rem;
    padding: 2rem 2.125rem 1rem 2.125rem;
    margin-bottom: 0;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 80px;
    transition: all 0.3s ease;
}

.stat-number.animate {
    animation: countUp 2s ease-out forwards;
}

@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stat-item:first-child .stat-number {
    color: white;
}

.stat-item:not(:first-child) .stat-number {
    color: #e70012;
}

.stat-label {
    font-size: 1.1rem;
    margin: 0;
    text-align: center;
    padding: 0.5rem 2.125rem 2rem 2.125rem;
}

.stat-item:first-child .stat-label {
    color: white;
}

.stat-item:not(:first-child) .stat-label {
    color: #333;
}

.stat-divider {
    position: absolute;
    right: 0;
    top: 10%;
    width: 2px;
    height: 80%;
    background: #d0d0d0;
    opacity: 0.8;
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-placeholder {
    width: 100%;
    height: 350px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: white;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    position: relative;
    overflow: hidden;
}

.image-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/index_aboutus.jpg') center/cover no-repeat;
    opacity: 0.3;
    z-index: 1;
}

.image-placeholder i {
    position: relative;
    z-index: 2;
}

/* 产品服务 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    row-gap: 0;
}

.service-card {
    background: transparent;
    padding: 0;
    border-radius: 0;
    text-align: left;
    box-shadow: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
    overflow: hidden;
    position: relative;
    height: 300px;
}

.service-card:hover {
    transform: none;
    box-shadow: none;
}

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

.service-card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2rem;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
}

.service-card-content h3 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.service-card-content p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    margin: 0;
}

/* 媒体变现：固定图片比例为 570x351，优先两列，其次一列 */
#monetization .services-grid {
    grid-template-columns: repeat(2, 570px);
    gap: 0.5rem;
    row-gap: 0;
    justify-content: center;
}

#monetization .service-card {
    width: 570px;
    max-width: 100%;
    aspect-ratio: 570 / 351;
    height: auto;
    border: none;
}

#monetization .service-card-bg {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    border-radius: 0;
}

/* 媒体变现：视觉隐藏文案但保留可访问性与SEO可读性 */
#monetization .service-card-content {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0 0 0 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
    background: none !important;
}

/* 屏幕较窄时，媒体变现改为单列 */
@media (max-width: 1200px) {
    #monetization .services-grid {
        grid-template-columns: repeat(1, minmax(0, 1fr));
        justify-content: center;
    }
    #monetization .service-card {
        width: 100%;
        max-width: 570px;
    }
}

/* 广告投放区块：固定卡片与背景图尺寸为 273x581 */
.services .services-grid {
    grid-template-columns: repeat(4, 273px);
    gap: 0.5rem;
    row-gap: 0;
    justify-content: center;
}

/* 广告投放区块特定的gap设置 */
#advertising .services-grid {
    grid-template-columns: repeat(4, 273px);
    gap: 0.5rem;
    row-gap: 0;
    justify-content: center;
}

.services .service-card {
    width: 273px;
    height: 581px;
}

.services .service-card-bg {
    width: 273px;
    height: 581px;
    background-size: cover;
    background-position: center;
    border-radius: 0;
}

/* 技术支持区块：移除图片间距与圆角 */
#support .services-grid {
    gap: 0;
    grid-template-columns: repeat(4, 485px);
    justify-content: center;
}

#support .service-card {
    border-radius: 0;
    width: 485px;
    height: 916px;
}

#support .service-card-bg {
    border-radius: 0;
    width: 485px;
    height: 916px;
    transition: background-image 0.3s ease;
}

/* 技术支持区块图片悬停效果 */
#support .service-card:nth-child(1):hover .service-card-bg {
    background-image: url('../images/jishu11.jpg') !important;
    opacity: 0.9;
}

#support .service-card:nth-child(2):hover .service-card-bg {
    background-image: url('../images/jishu22.jpg') !important;
    opacity: 0.9;
}

#support .service-card:nth-child(3):hover .service-card-bg {
    background-image: url('../images/jishu33.jpg') !important;
    opacity: 0.9;
}

#support .service-card:nth-child(4):hover .service-card-bg {
    background-image: url('../images/jishu44.jpg') !important;
    opacity: 0.9;
}

/* 技术支持区块悬停时隐藏底部文案 */
#support .service-card:hover .service-card-content {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

/* 调试：确保hover效果被触发 */
#support .service-card:hover {
    transform: scale(1.02);
}

/* 技术支持区块：响应式列数（固定卡片 485x916） */
@media (max-width: 1200px) and (min-width: 769px) {
    #support .services-grid {
        grid-template-columns: repeat(2, 485px);
    }
}

@media (max-width: 768px) {
    #support .services-grid {
        grid-template-columns: repeat(1, 485px);
    }
}

/* 广告投放区块响应式设计 - 平板端 */
@media (max-width: 1200px) and (min-width: 769px) {
    #advertising .services-grid {
        grid-template-columns: repeat(2, 273px);
        gap: 0.5rem;
        row-gap: 0;
    }
}

/* 广告投放区块响应式设计 - 手机端 */
@media (max-width: 768px) {
    #advertising .services-grid {
        grid-template-columns: repeat(1, 273px);
        gap: 0.5rem;
        row-gap: 0;
    }
}

/* 移除原有的图标样式，改用背景图片 */

/* 服务卡片标题样式已移至 .service-card-content h3 */

/* 服务卡片段落样式已移至 .service-card-content p */

/* 解决方案 */
.solutions {
    background: var(--color-bg-subtle);
}

/* 首页成功案例背景图 */
#cases.solutions {
    background-image: url('../images/chenggonganli.jpg');
    background-position: center;
    background-repeat: repeat;
    background-size: auto;
}

.solutions-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* 成功案例标题与副标题字号 */
#cases .section-header h2 {
    font-size: 36px;
}

#cases .section-header p {
    font-size: 18px;
}

/* 成功案例 - 顶部选项卡 */
.cases-tabs {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 20px;
}

.case-tab {
    min-width: 160px;
    height: 56px;
    padding: 0 24px;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    font-size: 15px;
    color: #343434;
    background: transparent;
    transition: all 0.2s ease;
    box-shadow: none;
}

.case-tab.active {
    background: #db3434;
    box-shadow: none;
    color: #fff;
}

/* 成功案例 - 渐变红背景卡片容器 */
.case-wrapper {
    background: linear-gradient(90deg, #f7787a 0%, #db3434 100%);
    border-radius: 16px;
    padding: 0;
    width: 1084px;
    height: 583px;
    max-width: 100%;
    margin: 0;
    display: flex;
    align-items: center;
    position: relative;
    left: 56px;
}

.case-card {
    background: #fff;
    border-radius: 12px;
    display: grid;
    grid-template-columns: 517px 1fr;
    gap: 24px;
    align-items: center;
    padding: 0;
    margin: 0;
    width: 1113px;
    height: 500px;
    position: relative;
    left: -50px;
}

/* 外层居中容器，仅用于媒体变现页成功案例块包裹 */
.case-outer-center {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.case-left img {
    display: block;
    width: 100%;
    max-width: 517px;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
}
 
.case-left {
    width: 100%;
    max-width: 517px;
    height: auto;
}

/* 成功案例图片右侧直角，左侧保持圆角 */
#caseImage {
    border-radius: 8px 0 0 8px;
}

.case-title {
    font-size: 28px;
    margin-bottom: 12px;
    color: #262626;
}

.case-desc {
    color: #595959;
    line-height: 1.7;
    font-size: 15px;
    margin-bottom: 30px;
}

/* 成功案例右侧内容左右内边距 */
.case-right {
    padding-left: 40px;
    padding-right: 60px;
    padding-top: 0;
    padding-bottom: 0;
}

.case-metrics {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    padding: 20px 0 8px;
    border-top: 2px solid #ebeef1;
    font-weight: 700;
    margin-top: 10px;
}

.metric-number {
    color: #db3434;
    font-size: 32px;
    font-weight: 700;
}

.metric-label {
    color: #8c8c8c;
    font-size: 15px;
}

.case-cta {
    margin-top: 28px;
    background: transparent;
    color: #db3434;
    border: 2px solid #db3434;
    border-radius: 999px;
    height: 48px;
    padding: 0 24px;
    line-height: 46px;
    box-shadow: none !important;
}

.case-cta:hover {
    box-shadow: none !important;
    color: #fff;
}

@media (max-width: 992px) {
    .case-card {
        grid-template-columns: 1fr;
        width: 100%;
        height: auto;
        left: 0;
    }
}

@media (max-width: 992px) {
    .case-wrapper {
        width: 100%;
        height: auto;
        margin: 0;
        left: 0;
    }
    .case-card {
        height: auto;
    }
}

.solution-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 2rem;
    align-items: center;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.solution-item:hover {
    transform: translateX(10px);
}

.solution-image {
    width: 150px;
    height: 150px;
    background: var(--gradient-hero);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    margin: 0 auto;
}

.solution-text h3 {
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.solution-text p {
    color: var(--color-text-muted);
    line-height: 1.6;
    font-size: 1.1rem;
}

/* 新闻动态 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.news-item {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.news-item:hover {
    transform: translateY(-5px);
}

.news-image {
    height: 200px;
    background: var(--gradient-hero);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
}

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

.news-content {
    padding: 1.5rem;
}

.news-content h3 {
    font-size: 1.3rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
    line-height: 1.4;
}

.news-content p {
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.news-date {
    color: var(--color-text-muted-2);
    font-size: 0.9rem;
}

/* 合作客户 */
.partners {
    background: #313132;
    padding: 20px 0;
}

.partners-content {
    text-align: center;
}

.partners-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    justify-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.partners-image {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 响应式布局：较宽屏幕显示两列 */
@media (min-width: 768px) {
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
}

/* 联系我们 */
.contact {
    background: #020710;
}

.contact .section-header h2 {
    color: white;
    font-size: 36px;
}

.contact .section-header p {
    color: white;
    font-size: 15px;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

/* 联系我们 - 参考 contact-grid */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr minmax(0, 1fr);
    gap: 0;
    align-items: center;
}

.contact-cta {
    background: white;
    padding: 2.5rem;
    border-radius: 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    width: 100%;
    height: 500px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* 左侧简化表单匹配截图风格 */
.contact-form-simple .form-group {
    margin-bottom: 1rem;
}

.contact-form-simple input,
.contact-form-simple textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #ebeef1;
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s ease;
    font-family: inherit;
}

.contact-form-simple textarea {
    resize: vertical;
    min-height: 140px;
}

.contact-form-simple input:focus,
.contact-form-simple textarea:focus {
    border-color: #ff7a7a;
}

.contact-form-simple .btn.btn-primary {
    width: 160px;
    height: 48px;
    border-radius: 10px;
    background: linear-gradient(90deg, #ff7a7a 0%, #ff6a5f 100%);
    box-shadow: 0 8px 24px rgba(255, 106, 95, 0.25);
}

/* 立即咨询按钮样式 - 居中并改为红色背景，胶囊形状 */
.contact-cta .btn.btn-primary {
    background: #e70012;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50px;
    border: none;
    box-shadow: none;
    color: white;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.contact-cta .btn.btn-primary:hover {
    background: #cc0010;
}

.contact-cta h3 {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

.contact-cta p {
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.contact-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.contact-actions .btn {
    border-radius: 10px;
}

.contact-qr-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.contact-qr-panel {
    background: none;
    border-radius: 0;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 525px;
    height: auto;
}

/* 右侧只显示图片 lxgc.jpg */
.contact-qr-image {
    display: block;
    width: 100%;
    height: auto;
    max-width: 525px;
    object-fit: contain;
    border-radius: 0;
}

.qr-card {
    background: white;
    padding: 1rem;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    text-align: center;
}

.qr-card img {
    width: 100%;
    max-width: 180px;
    height: auto;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: #fff;
}

/* 联系我们右侧二维码固定为 500x525 */
.contact-qr-panel .qr-card img {
    width: 100%;
    height: auto;
    max-width: 500px;
    border-radius: 0;
}

/* 窄屏时让二维码面板占页面宽度的 80%，并居中显示 */
@media (max-width: 768px) {
    .contact-qr-panel {
        width: 80%;
        margin: 0 auto;
    }
}

/* 页面宽度不够时隐藏contact-cta */
@media (max-width: 1200px) {
    .contact-cta {
        display: none;
    }
}

.qr-card p {
    margin-top: 0.5rem;
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-item i {
    width: 50px;
    height: 50px;
    background: var(--gradient-hero);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-item h4 {
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: var(--color-text-muted);
    line-height: 1.6;
}

.contact-form {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 联系页面主区域样式 */
.contact-main-section {
    padding: 4rem 0;
    background: var(--color-bg-subtle);
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.contact-form-left {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.contact-qr-right {
    position: relative;
    height: 500px;
}

.qr-background {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

.qr-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.contact-qr-right .qr-code {
    width: 150px;
    height: 150px;
    margin-bottom: 1rem;
    border-radius: 10px;
}

/* 覆盖弹窗内二维码容器，确保不被其它样式限制 */
.qr-modal .qr-code {
    width: auto;
    height: auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-text {
    color: var(--color-text);
    font-size: 1.1rem;
    margin: 0;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--color-border);
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

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

/* 页脚 */
.footer {
    background: var(--color-dark);
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #fff;
}

.footer-section p {
    color: var(--color-footer-text);
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--color-footer-text);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #fff;
}

.footer-bottom {
    border-top: 1px solid var(--color-dark-700);
    padding-top: 1rem;
    text-align: center;
    color: var(--color-footer-text);
}

.footer-bottom a {
    color: #ffffff;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.footer-bottom a:hover {
    opacity: 0.8;
}

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

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

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* 关于我们页面样式 */
.page-header {
    background: var(--gradient-hero);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}


.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.intro-text h2 {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: 2rem;
}

.intro-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.timeline {
    background: var(--color-bg-subtle);
    padding: 80px 0;
}

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

.timeline-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-primary);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-year {
    background: var(--color-primary);
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 1.1rem;
    min-width: 80px;
    text-align: center;
    position: relative;
    z-index: 2;
}

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin: 0 2rem;
    flex: 1;
    max-width: 300px;
}

.timeline-content h3 {
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.timeline-content p {
    color: var(--color-text-muted);
    line-height: 1.6;
}

.team {
    padding: 80px 0;
}

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

.team-member {
    text-align: center;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.team-member:hover {
    transform: translateY(-10px);
}

.member-photo {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 3rem;
    color: white;
}

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

.member-position {
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

.member-desc {
    color: var(--color-text-muted);
    line-height: 1.6;
    font-size: 0.95rem;
}

.culture {
    background: white;
    padding: 80px 0;
}

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

.culture .section-title {
    margin-left: 60px;
    text-align: left;
    color: #e70012;
    margin-bottom: 0.2rem;
    position: relative;
    font-weight: normal;
    line-height: 1.2;
    width: 50%;
}

.culture .section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 90px;
    height: 4px;
    background-color: #000;
    border-radius: 2px;
}

.culture .section-title::before {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: #000;
    border-radius: 0.5px;
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 40px;
    max-width: 90%;
    margin-left: auto;
    margin-right: auto;
}

.culture-item {
    text-align: center;
    background: linear-gradient(135deg, #fef7f7 0%, #ffeaea 100%);
    padding: 2rem 1.2rem;
    border-radius: 15px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.culture-item:hover {
    transform: translateY(-5px);
}

.culture-icon {
    width: 80px;
    height: 80px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 2rem;
    color: #e70012;
    border: 3px solid #e70012;
}

.culture-item h3 {
    color: #e70012;
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: bold;
}

.culture-item p {
    color: #333;
    line-height: 1.6;
    text-align: left;
    font-size: 0.95rem;
}

.nav-link.active {
    color: #e70012;
}

.nav-link.active::after {
    width: 100%;
}

/* 产品服务页面样式 */
.services-overview {
    padding: 80px 0;
    background: var(--color-bg-subtle);
}

.overview-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.overview-content h2 {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: 2rem;
}

.overview-content p {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--color-text-muted);
}

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

.service-detail {
    margin-bottom: 100px;
}

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

.service-detail-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.service-detail.reverse .service-detail-content {
    grid-template-columns: 1fr 1fr;
}

.service-detail.reverse .service-detail-text {
    order: 2;
}

.service-detail.reverse .service-detail-image {
    order: 1;
}

.service-icon-large {
    width: 100px;
    height: 100px;
    background: var(--gradient-hero);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    margin-bottom: 2rem;
}

.service-detail-text h3 {
    font-size: 2.2rem;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.service-detail-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text-muted);
    margin-bottom: 2rem;
}

.service-features {
    list-style: none;
    margin-bottom: 2rem;
}

.service-features li {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: var(--color-text-muted);
}

.service-features li i {
    color: #28a745;
    margin-right: 1rem;
    font-size: 1.2rem;
}

.service-detail-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* ——— 广告投放单页视觉（参考图风格） ——— */
.advertising-page { 
    background: #f5f5f5; 
}
.advertising-page .page-header {
    background: #f5f5f5;
    color: #111;
}

.advertising-page .service-detail {
    margin-bottom: 80px;
}

.advertising-page .service-detail-text h3 {
    color: #111;
}

.advertising-page .service-divider {
    width: 40px;
    height: 4px;
    background: #1f2dff;
    border-radius: 2px;
    margin: 14px 0 18px;
}

/* 右侧图片带双色斜向色带装饰 */
.ad-visual {
    position: relative;
    width: 273px;
    height: 581px;
    border-radius: 0;
    overflow: visible;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ad-visual img {
    width: 273px;
    height: 581px;
    object-fit: cover;
    border-radius: 4px;
    box-shadow: 0 10px 24px rgba(0,0,0,0.12);
}

.ad-visual .ribbon {
    position: absolute;
    width: 140px;
    height: 18px;
    border-radius: 3px;
    transform: rotate(-90deg);
    opacity: 0.9;
}

.ad-visual .ribbon-blue { background: #2f6cff; left: -60px; top: 120px; }
.ad-visual .ribbon-blue.light { background: #7aa4ff; left: -34px; top: 210px; }
.ad-visual .ribbon-red { background: #ff4d6d; right: -60px; bottom: 120px; }
.ad-visual .ribbon-red.light { background: #ff95a7; right: -34px; bottom: 210px; }

@media (max-width: 992px) {
    .ad-visual { width: 220px; height: 468px; }
    .ad-visual img { width: 220px; height: 468px; }
}

/* 仅保留四张图的简单展示样式 */
.advertising-page .detailed-services .container {
    display: flex;
    flex-direction: column;
    gap: 104px;
    align-items: center;
}

/* 四张图：宽度充足时1160px，否则按比例缩放 */
.advertising-page .detailed-services img {
    width: 100%;
    max-width: 1000px;
    height: auto;
    display: block;
}

/* 媒体变现页面：最大宽度1000，随浏览器等比缩放 */
.monetization-page .container,
.monetization-page .detailed-services .container {
    max-width: 1000px;
}
.monetization-page .detailed-services .container {
    display: flex;
    justify-content: center;
}
.monetization-page img {
    width: 100%;
    height: auto;
    max-width: 1000px;
    display: block;
}

/* 仅媒体变现页：主体展示图水平居中 */
.monetization-page .detailed-services img {
    margin-left: auto;
    margin-right: auto;
}

.tech-advantages {
    background: var(--color-bg-subtle);
    padding: 80px 0;
}

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

.advantage-item {
    text-align: center;
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-10px);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-hero);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: white;
}

.advantage-item h3 {
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.advantage-item p {
    color: var(--color-text-muted);
    line-height: 1.6;
}

.service-process {
    padding: 80px 0;
}

.process-steps {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 50px;
    right: 50px;
    height: 2px;
    background: var(--color-primary);
    z-index: 1;
}

.process-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    flex: 1;
    position: relative;
    z-index: 2;
}

.step-number {
    width: 100px;
    height: 100px;
    background: var(--gradient-hero);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin-bottom: 1.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.step-content h3 {
    color: var(--color-primary);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.step-content p {
    color: var(--color-text-muted);
    line-height: 1.6;
    max-width: 200px;
}

/* 通用响应式设计 - 仅用于没有特定ID的services-grid */
@media (max-width: 1200px) and (min-width: 769px) {
    .services-grid:not(#advertising .services-grid):not(#support .services-grid):not(#monetization .services-grid) {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
        row-gap: 0;
    }
    
    .stats {
        flex-direction: column;
        gap: 1rem;
        padding: 1.5rem;
        max-width: 90%;
        width: 90%;
        margin-left: 0;
    }
    
    .stat-item {
        width: 100%;
        flex: none;
    }
    
    .stat-item-with-divider {
        width: 100%;
        flex: none;
        position: relative;
    }
    
    .stat-number {
        font-size: 2.8rem;
        padding: 1.5rem 1.5rem 0.8rem 1.5rem;
        height: auto;
    }
    
    .stat-label {
        font-size: 1rem;
        padding: 0.5rem 1.5rem 1.5rem 1.5rem;
    }
    
    .stat-divider {
        display: none;
    }
}

/* 通用响应式设计 - 仅用于没有特定ID的services-grid */
@media (max-width: 768px) {
    .services-grid:not(#advertising .services-grid):not(#support .services-grid):not(#monetization .services-grid) {
        grid-template-columns: 1fr;
        gap: 0.5rem;
        row-gap: 0;
    }
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: 0;
        right: 0;
        top: 60px;
        background-color: var(--color-dark);
        width: 100%;
        max-width: 100vw;
        height: calc(100vh - 60px);
        transition: transform 0.3s ease;
        transform: translate3d(-110%, 0, 0);
        box-shadow: none;
        padding: 0;
        overflow-x: hidden;
        overflow-y: auto;
        backface-visibility: hidden;
        will-change: transform;
        box-sizing: border-box;
    }

    /* 移动端子菜单样式 */
    .submenu {
        position: static;
        background: transparent;
        box-shadow: none;
        border-radius: 0;
        padding: 0;
    }

    .submenu a {
        color: #ffffff;
        padding: 10px 0;
        opacity: 0.9;
        text-align: left;
    }

    .submenu a:hover {
        background: transparent;
        color: #e70012;
    }

    .has-submenu > .nav-link {
        justify-content: flex-start;
    }

    /* 全屏两步导航：顶级列表 -> 子菜单覆盖 */
    .nav-menu {
        display: block;
        overflow: hidden;
        padding: 0;
    }
    .nav-menu > li {
        float: none;
        width: 100%;
        max-width: 100%;
        margin: 0;
        padding: 8px 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        box-sizing: border-box;
        overflow: hidden;
    }
    .nav-menu > li .nav-link {
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 16px;
        line-height: 1.3;
        font-weight: 600;
    }
    .nav-menu > li.has-submenu > .submenu {
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        height: calc(100vh - 60px);
        background: var(--color-dark);
        padding: 56px 20px 20px; /* 预留返回头部 */
        overflow-y: auto;
        display: none;
    }
    /* 子菜单头部（返回 + 标题） */
    .mobile-submenu-header {
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        height: 56px;
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 0 16px;
        background: var(--color-dark);
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        z-index: 2;
    }
    .mobile-submenu-back {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 999px;
        background: rgba(255, 255, 255, 0.08);
        color: #fff;
        font-size: 18px;
    }
    .mobile-submenu-title {
        color: #fff;
        font-size: 16px;
        font-weight: 600;
    }
    .submenu li {
        margin: 0 0 8px;
    }
    .submenu a {
        padding: 12px 4px;
        font-size: 16px;
    }
    /* 进入子菜单态：隐藏顶级，仅显示当前子菜单 */
    .nav-menu.show-submenu > li { display: none; }
    .nav-menu.show-submenu > li.active-submenu { display: block; }
    .nav-menu.show-submenu > li.active-submenu > .submenu { display: block; }
    /* 展开全部子菜单模式 */
    .nav-menu.expand-all {
        overflow-x: hidden;
        overflow-y: auto;
        padding: 8px 12px;
        max-width: 100vw;
        box-sizing: border-box;
    }
    .nav-menu.expand-all > li {
        display: block;
        padding: 6px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .nav-menu.expand-all > li.has-submenu > .submenu {
        position: static;
        display: block;
        height: auto;
        padding: 4px 0 8px 12px;
        background: transparent;
        overflow: hidden;
        max-width: 100%;
        box-sizing: border-box;
    }
    .nav-menu.expand-all .submenu a {
        padding: 6px 0;
        font-size: 14px;
        color: rgba(255, 255, 255, 0.8);
        font-weight: 400;
        word-wrap: break-word;
        overflow-wrap: break-word;
        max-width: 100%;
        display: block;
    }
    .nav-menu.expand-all .submenu li {
        margin: 0 0 4px;
    }
    
    .nav-auth {
        display: none;
    }
    
    .nav-menu.active {
        transform: translate3d(0, 0, 0);
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.3);
    }
    
    .nav-menu li {
        margin: 1rem 0;
    }
    
    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
        padding-top: 15vh;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
        gap: 63px;
    }
    
    .about-content {
        max-width: 90%;
        margin: 0 auto;
        padding: 2rem;
        text-align: left;
    }
    
    .about .container {
        flex-direction: column;
        min-height: auto;
    }
    
    .about::after {
        display: none;
    }
    
    .stats {
        flex-direction: column;
        gap: 1rem;
        padding: 1.5rem;
        max-width: 100%;
        width: 100%;
        margin-left: 0;
    }
    
    .stat-item {
        width: 100%;
        flex: none;
    }
    
    .stat-item-with-divider {
        width: 100%;
        flex: none;
        position: relative;
    }
    
    .stat-number {
        font-size: 2rem;
        padding: 0.8rem 1rem;
        min-width: 100px;
        height: auto;
    }
    
    .stat-divider {
        display: none;
    }
    
    .stat-label {
        font-size: 1rem;
        padding: 0.5rem 1rem 1rem 1rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .solution-item {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .solution-image {
        margin: 0 auto 1rem;
    }
    
    .section-header h2 {
        font-size: 2.2rem;
    }
    
    .tech-animation {
        font-size: 3rem;
        gap: 1rem;
    }
}

/* 移动端公司简介和企业文化优化 */
@media (max-width: 768px) {
    /* 公司简介移动端优化 */
    .company-intro {
        padding: 40px 0;
        min-height: 760px !important;
    }
    
    .company-intro .container {
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }
    
    .company-intro .intro-text {
        margin-left: 0;
        margin-top: 20px;
        padding: 20px;
        max-width: 100%;
        width: 100%;
    }
    
    .company-intro h2 {
        font-size: 2.5rem;
        text-align: center;
        margin-bottom: 1rem;
    }
    
    .company-intro h2::after,
    .company-intro h2::before {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .company-intro h2::after {
        width: 60px;
    }
    
    /* 企业文化移动端优化 */
    .culture {
        padding: 40px 0;
    }
    
    .culture .section-title {
        margin-left: 0;
        text-align: center;
        width: 100%;
        font-size: 2.5rem;
        margin-bottom: 1rem;
    }
    
    .culture .section-title::after,
    .culture .section-title::before {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .culture .section-title::after {
        width: 60px;
    }
    
    .culture-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin-top: 30px;
        max-width: 100%;
        margin-left: 20px;
        margin-right: 20px;
    }
    
    .culture-item {
        padding: 1.5rem 1rem;
    }
    
    .culture-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }
    
    .culture-item h3 {
        font-size: 1.2rem;
        margin-bottom: 0.8rem;
    }
    
    .culture-item p {
        font-size: 0.9rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .btn {
        width: 160px;
        height: 48px;
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 63px;
    }
    
    .stats {
        flex-direction: column;
        gap: 1rem;
        padding: 1.5rem;
    }
    
    .stat-item {
        width: 100%;
    }
    
    .stat-number {
        font-size: 2rem;
        padding: 0.8rem 1rem;
        min-width: 100px;
    }
    
    
    .service-card {
        height: 250px;
    }
    
    .service-card-content {
        padding: 1.5rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
    
    /* 联系页面移动端样式 */
    .contact-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-qr-right {
        height: 300px;
    }
    
    .qr-code {
        width: 120px;
        height: 120px;
    }
    
    .qr-overlay {
        padding: 1.5rem;
    }
    
    .qr-text {
        font-size: 1rem;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .tech-animation {
        font-size: 2.5rem;
    }
}