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

body {
    font-family: 'Microsoft YaHei', 'SimHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.nav-brand h1 {
    font-size: 24px;
    color: #2c3e50;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: #3498db;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #3498db;
    transition: width 0.3s ease;
}

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

/* 移动端菜单按钮 */
.nav-toggle {
    display: none;
    flex-direction: column;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 5px;
    gap: 5px;
    z-index: 1001;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #2c3e50;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* 首页横幅 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 150px 20px 100px;
    text-align: center;
    margin-top: 70px;
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.2;
}

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

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-preview {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 50px;
    position: relative;
    z-index: 1;
    flex-wrap: wrap;
}

.preview-item {
    width: 200px;
    height: 120px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.3);
    transition: transform 0.3s ease;
}

.preview-item:hover {
    transform: translateY(-10px) scale(1.05);
}

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

.hero-content h2 {
    font-size: 48px;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease;
}

.hero-content p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.2s both;
}

.btn-primary {
    display: inline-block;
    padding: 15px 40px;
    background: #fff;
    color: #667eea;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: all 0.3s ease;
    animation: fadeInUp 1s ease 0.4s both;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

/* 章节样式 */
.section {
    padding: 80px 20px;
}

.section-title {
    text-align: center;
    font-size: 36px;
    color: #2c3e50;
    margin-bottom: 50px;
    position: relative;
    padding-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

.bg-light {
    background: #f8f9fa;
}

/* 公司简介 */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.about-text p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
    color: #555;
}

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

.about-image > img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.image-gallery {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 15px;
}

.image-gallery img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

/* 许可证信息卡片 */
.license-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.info-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.card-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.info-card h3 {
    font-size: 24px;
    color: #2c3e50;
    margin-bottom: 20px;
}

.info-card ul {
    list-style: none;
}

.info-card ul li {
    padding: 10px 0;
    padding-left: 25px;
    position: relative;
    color: #555;
}

.info-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #3498db;
    font-weight: bold;
}

/* 业务范围 */
.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.business-item {
    background: white;
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

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

.business-icon {
    font-size: 60px;
    margin-bottom: 20px;
}

.business-item h3 {
    font-size: 22px;
    color: #2c3e50;
    margin-bottom: 15px;
}

.business-item p {
    color: #666;
    line-height: 1.8;
}

/* 合规承诺 */
.commitment {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.commitment-item {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.commitment-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.commitment-item h3 {
    font-size: 20px;
    color: #2c3e50;
    margin-bottom: 15px;
}

.commitment-item p {
    color: #666;
    line-height: 1.8;
}

/* 联系我们 */
.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.contact-item {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    text-align: center;
}

.contact-item h3 {
    font-size: 20px;
    color: #2c3e50;
    margin-bottom: 15px;
}

.contact-item p {
    color: #666;
}

/* 页脚 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 40px 20px;
    text-align: center;
}

.footer p {
    margin: 10px 0;
    opacity: 0.9;
}

.footer #icp-number {
    color: #3498db;
    font-weight: bold;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    /* 导航栏移动端样式 */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        gap: 0;
        padding: 20px 0;
        box-shadow: 0 5px 20px rgba(0,0,0,0.1);
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 999;
        max-height: calc(100vh - 70px);
        overflow-y: auto;
    }

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

    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid #f0f0f0;
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

    .nav-menu a {
        display: block;
        padding: 15px 20px;
        text-align: left;
        font-size: 16px;
    }

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

    .nav-menu a:hover {
        background: #f8f9fa;
        color: #3498db;
    }

    .nav-brand h1 {
        font-size: 20px;
    }

    .navbar .container {
        padding: 12px 20px;
    }

    /* 首页横幅移动端 */
    .hero {
        padding: 120px 15px 80px;
    }

    .hero-content h2 {
        font-size: 28px;
        margin-bottom: 15px;
    }

    .hero-content p {
        font-size: 14px;
        margin-bottom: 25px;
    }

    .btn-primary {
        padding: 12px 30px;
        font-size: 14px;
    }

    .hero-preview {
        margin-top: 30px;
        gap: 8px;
    }

    .preview-item {
        width: 100px;
        height: 60px;
    }

    /* 其他移动端样式 */
    .about-content {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .section-title {
        font-size: 24px;
        margin-bottom: 30px;
    }

    .section {
        padding: 50px 15px;
    }

    .license-info,
    .business-grid,
    .commitment,
    .contact-info {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .info-card,
    .business-item,
    .commitment-item,
    .contact-item {
        padding: 20px;
    }

    .container {
        padding: 0 15px;
    }
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 直播平台功能样式 */
.platform-section {
    margin-bottom: 60px;
}

.platform-showcase {
    margin-bottom: 40px;
    text-align: center;
}

.showcase-image {
    max-width: 100%;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.showcase-image img {
    width: 100%;
    height: auto;
    display: block;
}

.audit-showcase {
    margin-bottom: 30px;
    text-align: center;
}

.audit-image {
    max-width: 800px;
    margin: 0 auto;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.audit-image img {
    width: 100%;
    height: auto;
    display: block;
}

.platform-subtitle {
    font-size: 28px;
    color: #2c3e50;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid #e0e0e0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.feature-item {
    background: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0,0,0,0.12);
}

.feature-item h4 {
    font-size: 20px;
    color: #2c3e50;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #3498db;
}

.feature-item ul {
    list-style: none;
    padding: 0;
}

.feature-item ul li {
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
    color: #555;
    line-height: 1.6;
}

.feature-item ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #3498db;
    font-weight: bold;
    font-size: 20px;
}

/* 审核系统样式 */
.audit-system {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.audit-item {
    background: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
}

.audit-item h4 {
    font-size: 20px;
    color: #2c3e50;
    margin-bottom: 15px;
}

.audit-item p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 10px;
}

.audit-item ul {
    list-style: none;
    padding: 0;
}

.audit-item ul li {
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
    color: #555;
}

.audit-item ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #27ae60;
    font-weight: bold;
}

/* 技术架构样式 */
.tech-architecture {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.tech-item {
    background: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.tech-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0,0,0,0.12);
}

.tech-item h4 {
    font-size: 20px;
    color: #2c3e50;
    margin-bottom: 15px;
}

.tech-item p {
    color: #666;
    line-height: 1.8;
}

/* 业务详情样式 */
.business-detail {
    margin-top: 40px;
}

.business-category {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    margin-bottom: 40px;
}

.business-category h3 {
    font-size: 24px;
    color: #2c3e50;
    margin-bottom: 20px;
}

.business-category > p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 25px;
}

.category-list {
    display: grid;
    gap: 15px;
}

.category-item {
    padding: 15px 20px;
    background: #f8f9fa;
    border-left: 4px solid #3498db;
    border-radius: 5px;
    color: #555;
    line-height: 1.8;
}

.category-item strong {
    color: #2c3e50;
}

/* 统计数据样式 */
.business-stats {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    margin-bottom: 40px;
}

.business-stats h3 {
    font-size: 24px;
    color: #2c3e50;
    margin-bottom: 30px;
    text-align: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 10px;
    color: white;
}

.stat-number {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 16px;
    opacity: 0.9;
}

/* 功能特色样式 */
.business-features {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.business-features h3 {
    font-size: 24px;
    color: #2c3e50;
    margin-bottom: 30px;
}

.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.feature-box {
    padding: 25px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #3498db;
    transition: all 0.3s ease;
}

.feature-box:hover {
    background: #e8f4f8;
    transform: translateX(5px);
}

.feature-box h4 {
    font-size: 18px;
    color: #2c3e50;
    margin-bottom: 10px;
}

.feature-box p {
    color: #666;
    line-height: 1.8;
}

/* 直播场景展示 */
.business-showcase {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    margin-bottom: 40px;
}

.business-showcase h3 {
    font-size: 24px;
    color: #2c3e50;
    margin-bottom: 30px;
    text-align: center;
}

.live-scenes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.scene-item {
    text-align: center;
    transition: transform 0.3s ease;
}

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

.scene-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    margin-bottom: 15px;
}

/* 竖屏图片样式（才艺表演直播） */
.scene-item-portrait img {
    height: 300px;
    object-fit: cover;
    object-position: center;
}

.scene-item p {
    font-size: 16px;
    color: #2c3e50;
    font-weight: 500;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .feature-grid,
    .audit-system,
    .tech-architecture,
    .features-list {
        grid-template-columns: 1fr;
    }

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

    .platform-subtitle {
        font-size: 24px;
    }

    .business-category,
    .business-stats,
    .business-features,
    .business-showcase {
        padding: 20px;
    }

    .hero-preview {
        gap: 10px;
    }

    .preview-item {
        width: 150px;
        height: 90px;
    }

    .image-gallery {
        grid-template-columns: 1fr;
    }

    .live-scenes {
        grid-template-columns: 1fr;
    }

    /* 平台功能区域移动端优化 */
    .platform-section {
        margin-bottom: 40px;
    }

    .platform-subtitle {
        font-size: 20px;
        margin-bottom: 20px;
    }

    .feature-item {
        padding: 20px;
    }

    .feature-item h4 {
        font-size: 18px;
    }

    .audit-item,
    .tech-item {
        padding: 20px;
    }

    .audit-item h4,
    .tech-item h4 {
        font-size: 18px;
    }

    /* 业务范围移动端优化 */
    .business-category {
        padding: 20px;
    }

    .category-item {
        padding: 12px 15px;
        font-size: 14px;
    }

    .stats-grid {
        gap: 15px;
    }

    .stat-item {
        padding: 15px;
    }

    .stat-number {
        font-size: 28px;
    }

    .stat-label {
        font-size: 14px;
    }

    .feature-box {
        padding: 20px;
    }

    .feature-box h4 {
        font-size: 16px;
    }

    .scene-item img {
        height: 150px;
    }

    .scene-item-portrait img {
        height: 800px;
    }

    /* 页脚移动端 */
    .footer {
        padding: 30px 15px;
    }

    .footer p {
        font-size: 14px;
        line-height: 1.6;
    }

    /* 图片展示移动端 */
    .showcase-image,
    .audit-image {
        margin-bottom: 20px;
    }

    .about-image > img {
        margin-bottom: 15px;
    }

    .image-gallery {
        gap: 10px;
    }
}

/* 超小屏幕优化（小于480px） */
@media (max-width: 480px) {
    .nav-brand h1 {
        font-size: 18px;
    }

    .hero-content h2 {
        font-size: 24px;
    }

    .hero-content p {
        font-size: 13px;
    }

    .section-title {
        font-size: 20px;
    }

    .platform-subtitle {
        font-size: 18px;
    }

    .preview-item {
        width: 80px;
        height: 50px;
    }

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

    .stat-number {
        font-size: 32px;
    }

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

    .feature-item,
    .audit-item,
    .tech-item {
        padding: 15px;
    }

    .business-category,
    .business-stats,
    .business-features,
    .business-showcase {
        padding: 15px;
    }

    .container {
        padding: 0 10px;
    }

    .section {
        padding: 40px 10px;
    }
}