/*
 * rem 单位转换说明
 * ==================
 * 基准值设置: html { font-size: 62.5%; }
 * 换算比例: 1rem = 10px (即 16px × 0.625)
 * 计算公式: rem值 = px值 / 10
 * 精度要求: 保留三位小数
 *
 * 示例:
 * - 40px = 4rem
 * - 20px = 2rem
 * - 16px = 1.6rem
 * - 15px = 1.5rem
 * - 12px = 1.2rem
 *
 * review 标记表示因取整可能产生的 0.5px 偏差,需设计师复核
 */

:root {
    --primary-color: #0059FF;
    --primary-dark: #0052CC;
    --secondary-color: #00C2FF;
    --text-color: #333333;
    --text-light: #666666;
    --bg-light: #F4F4F4;
    --white: #FFFFFF;
    --blue-section-bg: #2B57F6; /* 新的蓝色背景 */
    --gradient-blue: linear-gradient(90deg, #0059FF 0%, #5691FF 100%);
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.08);
    --radius: 8px;
    --container-width: 1200px;
    --header-height: 64px;
}

/* 重置与基础样式 */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { overflow-x: hidden; width: 100%; font-size: 62.5%;  background-color: var(--white); }
body { font-size: 1.6rem; /* 默认 16px */ }
body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--white);
    padding-top: 0;
    overflow-x: hidden;
    width: 100%;
}
a { text-decoration: none; color: inherit; transition: color 0.3s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* 布局 */
.container { width: 90%; max-width: var(--container-width); margin: 0 auto; padding: 0 15px; }
section { padding: 120px 0; }

/* 排版 */
h1, h2, h3, h4 { font-weight: 700; margin-bottom: 0.8rem; }
.section-header { text-align: center; margin-bottom: 9.6rem; max-width: 800px; margin-left: auto; margin-right: auto; }
.section-title { font-size: 4rem; margin-bottom: 2.4rem; }
.section-subtitle { font-size: 2rem; color: var(--text-light); }
.highlight { color: var(--primary-color); }
.white-text h2, .white-text p { color: var(--white); }
.white-text .section-subtitle { opacity: 0.8; }

/* 按钮 */
.btn { display: inline-block; padding: 10px 24px; border-radius: 4px; font-weight: 600; cursor: pointer; transition: all 0.3s; border: none; font-size: 1.52rem; }
.btn-outline-primary { border: 1px solid var(--primary-color); color: var(--primary-color); background: transparent; }
.btn-outline-primary:hover { background: var(--primary-color); color: var(--white); }

/* 头部 */
.site-header { position: fixed; top: 0; left: 0; width: 100%; height: var(--header-height); background: transparent; z-index: 1000; box-shadow: none; display: flex; align-items: center; transition: background-color 0.3s ease, box-shadow 0.3s ease; }
.site-header.scrolled { background: rgba(255, 255, 255, 1); box-shadow: 0 1px 0 rgba(0,0,0,0.05); }
.site-header .container { display: flex; justify-content: space-between; align-items: center; }
.logo a { display: flex; align-items: center; gap: 8px; font-size: 1.92rem; font-weight: 800; color: #333; }
.logo-icon { color: var(--primary-color); font-size: 2.24rem; }
.main-nav ul { display: flex; gap: 40px; }
.main-nav a { font-size: 1.52rem; font-weight: 500; color: #333; position: relative; transition: all 0.3s; }
.main-nav a:hover { color: var(--primary-color); }
.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0; 
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: width 0.3s ease;
}
.main-nav a.active { color: var(--primary-color); font-weight: 700; }
.main-nav a.active::after {
    width: 100%;
}
.header-actions { opacity: 0; width: 77px; pointer-events: none; }
.mobile-nav {
    position: absolute;
    top: 56px;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 1);
    /* box-shadow: 0 4px 12px #0000000d; */
    display: flex;
    flex-direction: column;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease-in-out;
}
.mobile-nav.show {
    max-height: 500px;
}
.mobile-nav ul {
    display: flex;
    flex-direction: column;
}
.mobile-nav ul li {
    border-bottom: 1px solid #f0f0f0;
}
.mobile-nav ul li a {
    display: block;
    padding: 16px 20px;
    font-size: 1.6rem;
    color: #333;
}
.mobile-nav ul li a:hover {
    background: #f8f9fa;
    color: var(--primary-color);
}
.hero-section {
    background-color: var(--white);	
    position: relative; 
    background: url('../images/hero-bg.png') no-repeat center center;
    background-size: cover;
    padding-top:  0; 
    padding-bottom: 0; 
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 2rem;
    flex: 1;
}
.hero-text { flex: 1; padding-right: 40px; }
.hero-text h1 { font-size: 5.6rem; line-height: 1.3; margin-bottom: 2rem; color: #222; }
.hero-desc { font-size: 1.6rem; color: #666; margin-bottom: 0; } 
.hero-visual { flex: 1; display: flex; justify-content: flex-end; }

/* 数据统计栏 */
.stats-bar { 
    background: #FFFFFF99; 
    padding: 60px 0;
    margin-top: auto;
    backdrop-filter: blur(10px);
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stat-item { position: relative; }
.stat-item:not(:last-child)::after { content: ''; position: absolute; right: 0; top: 10%; height: 80%; width: 1px; background: #D6E7FF; }
.stat-number { font-size: 3.2rem; font-weight: 800; color: #222; margin-bottom: 0.8rem; }
.stat-suffix { font-size: 2.4rem; font-weight: 600; vertical-align: middle; margin-left: 0.2rem; /* 待复核 */ }
.stat-label { font-size: 1.6rem; color: #666; } 

.engine-section { background: var(--white); }
.engine-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; padding: 0 20px; }
.engine-card { text-align: center; padding: 30px 20px; transition: transform 0.3s; }
.engine-card:hover { transform: translateY(-10px); }
.card-icon { width: 120px; height: auto; margin: 0 auto 24px; display: flex; align-items: center; justify-content: center; }
.engine-card h3 { font-size: 2rem; color: #333; }

.card-progress {
    margin-top: 3.6rem;
    width: 100%;
    height: 3px;
    background-color: rgba(0, 0, 0, 0.05);
    border-radius: 3px;
    overflow: hidden;
}

.card-progress .progress-bar {
    width: 0;
    height: 100%;
    background: var(--gradient-blue);
    border-radius: 3px;
    transition: width 0.5s ease-out;
}

.engine-card:hover .card-icon {
    transform: translateY(-10px); 
}
.engine-card .card-icon {
    transition: transform 0.3s ease;
}

.engine-card:hover .progress-bar {
    width: 100%; 
}

.products-section { 
    background: #FFFFFF; 
}
.tabs-wrapper { padding-bottom: 10rem; position: relative; width: 100%; }
.tabs-wrapper::before {
    content: '';
    position: absolute;
    top: 50px; 
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../images/Rectangle.png') no-repeat center top;
    background-size: 100% 100%;
    z-index: -1;
}
.tabs-nav { display: flex; justify-content: center; gap: 120px; margin-bottom: 5rem; border-bottom: none; position: relative; width: fit-content; margin-left: auto; margin-right: auto; }
.tab-btn { background: none; border: none; font-size: 1.8rem; padding-bottom: 1.5rem; cursor: pointer; color: #666; position: relative; font-weight: 500; width: 120px; height: 50px; transition: all 0.3s; }
.tab-btn.active { color: #333; font-weight: 700;font-size: 2.4rem; }
.tab-btn.active::after { 
    content: ''; 
    position: absolute; 
    bottom: 0; 
    left: 50%; 
    transform: translateX(-50%); 
    width: 80px; 
    height: 6px; 
    background: linear-gradient(90deg, #0059FF 0%, #8ECAFF 100%);
    box-shadow: 0px 4px 10px 0px #66AAFF99;
    border-radius: 3px;
    animation: tabLineExpand 0.3s cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
}

@keyframes tabLineExpand {
    from { width: 0; opacity: 0; }
    to { width: 80px; opacity: 1; }
}

.tabs-body {
    position: relative;
    padding-top: 50px;
}

.tab-content { display: none; grid-template-columns: 0.8fr 1fr; gap: 50px; align-items: stretch; }
.tab-content.active { display: grid; animation: fadeIn 0.5s; }

.feature-list { display: flex; flex-direction: column; gap: 15px; height: 100%; justify-content: space-between; }
.feature-item { padding: 35px; border-radius: 8px; background: transparent; border: 1px solid transparent; cursor: pointer; transition: all 0.3s; display: flex; flex-direction: column; }
.feature-item.active { background: var(--gradient-blue); border-color: var(--white); color: var(--white); box-shadow: 0 10px 20px rgba(0, 102, 255, 0.2); }
.feature-item .text { font-size: 2.4rem; font-weight: 700; display: flex; align-items: center; }

.feature-item .icon { font-size: 1.92rem; display: flex; align-items: center; justify-content: center; width: 20px; height: 20px; }
.feature-item .icon img { width: 100%; height: 100%; }
.feature-item .icon-active { display: none; }
.feature-item.active .icon-normal { display: none; }
.feature-item.active .icon-active { display: block; }


.feature-item .desc { height: 48px; font-size: 1.6rem; margin-top: 1.2rem; opacity: 0.9; line-height: 1.5; display: none; }
.feature-item.active .desc { display: block; }
.feature-item:not(.active):hover { background: #fff; border-color: #eee; }

.feature-item .feature-title { font-size: 2.4rem; font-weight: 700; display: flex; align-items: center; gap: 12px; }

.feature-visual { height: auto; min-height: 400px; background: transparent; border-radius: 16px; overflow: hidden; display: flex; align-items: center; justify-content: center; }
.visual-placeholder { width: 100%; height: 100%; padding: 2px;}
.visual-placeholder img { width: 100%; height: 100%; transition: opacity 0.3s ease-in-out; }
.visual-placeholder img.fade-out { opacity: 0; }

/* 覆盖区域（蓝色） */
.coverage-section {
    background-color: var(--white);    	
    background: url('../images/coverage-bg.png') no-repeat center center;
    background-size: cover;
    padding: 0; 
    position: relative; 
    overflow: hidden; 
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.coverage-container { 
    display: flex; 
    gap: 20px; 
    width: 100%;
    height: 436px;
}

.coverage-card { 
    flex: 1; 
    border-radius: 16px; 
    overflow: hidden; 
    transition: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1); 
    position: relative;
    cursor: pointer;
    background-color: #f0f5ff; 
}
.phone {
    display: none;
}
.bg-cover-1 { --bg-mini: url('../images/mini-1.png'); --bg-cover: url('../images/cover-1.png'); }
.bg-cover-2 { --bg-mini: url('../images/mini-2.png'); --bg-cover: url('../images/cover-2.png'); }
.bg-cover-3 { --bg-mini: url('../images/mini-3.png'); --bg-cover: url('../images/cover-3.png'); }
.bg-cover-4 { --bg-mini: url('../images/mini-4.png'); --bg-cover: url('../images/cover-4.png'); }

.coverage-card::before, .coverage-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: opacity 0.6s ease;
    z-index: 0;
}

.coverage-card::before {
    background-image: var(--bg-mini);
    opacity: 1;
}

.coverage-card::after {
    background-image: var(--bg-cover);
    opacity: 0;
}

.coverage-card.active::before { opacity: 0; }
.coverage-card.active::after { opacity: 1; }

.coverage-card.active { 
    flex: 3.5; 
    border-color: transparent;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.content-collapsed, .content-expanded {
    position: relative;
    z-index: 2;
    padding: 40px;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    min-width: 200px;
    transition: opacity 0.4s ease;
}

.content-collapsed {
    box-sizing: border-box;
    padding: 40px 24px;
}
.content-collapsed h3 { font-size: 2.4rem; color: #fff; margin-bottom: 1rem; }
.content-collapsed p { font-size: 1.8rem; color: rgba(255,255,255,0.8); width: 130px; }

.content-expanded {
    opacity: 0;
    display: none;
}
.coverage-card.active .content-expanded {
    opacity: 1;
    display: flex;
}
.coverage-card.active .content-collapsed {
    display: none;
}

.content-expanded h3 { font-size: 2.4rem; color: #333; margin-bottom: 2rem; font-weight: 700; }
.content-expanded .card-desc {
    font-size: 1.8rem;
    color: #666;
    line-height: 1.6;
    margin-bottom: auto;
    display: block;
    opacity: 1;
    transform: none;
}

.card-visual {
    margin-top: 3rem;
    overflow: hidden;
    position: relative;
    width: 100%;
    -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
    mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.marquee-track {
    display: flex;
    width: max-content; 
}

.app-icons-row { 
    display: flex; 
    gap: 12px; 
    padding-right: 12px;
    flex-shrink: 0;
}

.app-icons-row img { 
    width: 64px; 
    height: 64px; 
    border-radius: 16px; 
    object-fit: cover;
    background: transparent;
    padding: 0;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.coverage-card.active .marquee-track {
    animation: marquee 10s linear infinite;
}

.coverage-card h3 {
    font-size: 2.4rem;
    margin-bottom: 1.8rem;
    white-space: nowrap;
    transition: color 0.3s;
}

.coverage-card:not(.active) h3 { color: var(--white); }
.coverage-card.active h3 { color: #333; }

.card-desc {
    font-size: 1.8rem;
    margin-bottom: 3rem;
    opacity: 0;
    transform: translateY(2rem);
    transition: all 0.4s 0.1s;
    display: none;
}

.coverage-card.active .card-desc { 
    display: block; 
    opacity: 1; 
    transform: translateY(0); 
    color: #666;
}

.card-visual {
    margin-top: auto;
    transition: all 0.5s;
}

.app-icons-row { display: flex; gap: 15px; font-size: 1.8rem; }
.app-icon { opacity: 0.8; transition: transform 0.3s; }
.app-icon:hover { transform: scale(1.1); opacity: 1; }

.card-bg-visual { 
    height: 120px; 
    background: rgba(0,0,0,0.1); 
    border-radius: 8px; 
    width: 100%;
}
.coverage-card.active .card-bg-visual {
    background: #F0F5FF; 
}


.alliance-section { background: #fff; }
.alliance-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.alliance-item { background: linear-gradient(180deg, #FAFAFA 0%, #FBFCFF 100%); padding: 30px; text-align: center; border-radius: 16px; transition: all 0.3s; border: 1px solid #F1F2F6;}
.alliance-item:hover { box-shadow: var(--shadow-md); transform: translateY(-5px);background: linear-gradient(300.44deg, #FFFFFF 31.97%, #EFF4FF 120.91%); }
.item-icon { width: 60px; height: 60px; margin: 0 auto 20px; }
.alliance-item h4 { font-size: 2rem; margin-bottom: 1rem; color: #333; }
.alliance-item p { font-size: 1.6rem; color: #888; }
.alliance-item p.desc {display: none;}


.partners-section { background: linear-gradient(180deg, #FFFFFF 0%, #F4F4F4 59.97%); }
.partners-logos { 
    display: flex; 
    flex-wrap: wrap; 
    justify-content: center; 
    gap: 10px; 
    margin: 0 auto;
}
.logo-item { 
    width: 222px; 
    height: 100%; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    border-radius: 12px; 
    transition: all 0.3s ease;
}

.logo-item img {
    max-width: 100%;
    object-fit: cover;
}
/* 页脚 */
.site-footer { background: #F4F4F4; padding: 60px 0 40px; color: #666; font-size: 1.44rem; border-top: 1px solid #eee; }
.footer-layout { display: flex; justify-content: space-between; height: 150px; }
.footer-logo {  color: #333; display: flex;flex-direction: column; align-items: start; justify-content: space-between; height: 100%; }
.footer-logo .logo-icon img { width: auto; height: 40px; }
.footer-right { display: flex; gap: 80px; text-align: left; }
.footer-right .contact { min-width: 182px; }
.footer-right .business { min-width: 84px; }
.footer-col h4 { color: #333; margin-bottom: 2.4rem; font-size: 1.6rem; font-weight: 700; }
.footer-col ul { display: flex; flex-direction: column; gap: 16px; }
.footer-col li { display: flex; align-items: center; }
.footer-col span, .footer-col a { color: #666; transition: color 0.2s; font-size: 1.4rem; }
.footer-col a:hover { color: var(--primary-color); }

.footer-bottom {
    border-top: none;
    padding-top: 0;
    text-align: left;
    color: #666;
    font-size: 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.copyright { color: #666; margin-bottom: 0; }
.icp-info { display: flex; align-items: center; flex-wrap: wrap; color: #666; }
.icp-info a { color: #666; display: flex; align-items: center; gap: 5px; text-decoration: none; transition: color 0.2s; }
.icp-info a:hover { color: var(--primary-color); }
.icp-info img { height: 13px; width: auto; margin-bottom: 0.2rem; /* 待复核 */ }
.divider { color: #ddd; margin: 0 5px; }
.bottom-center {display: none;}

/* 动画 */
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.fade-up { opacity: 0; transform: translateY(30px); transition: all 0.8s ease-out; }
.fade-up.visible { opacity: 1; transform: translateY(0); }
.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; }

/* 响应式 */
@media (max-width: 992px) {
    section { padding: 60px 0; }
    .section-title { font-size: 2.8rem; margin-bottom: 1.2rem; }
    .section-subtitle { font-size: 1.4rem;}
    .header-actions {display: none;}
    .main-nav ul { gap: 20px; }
    .hero-section { 
        min-height: auto; 
        background: transparent;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
    }
    .hero-content { 
        width: 100%;
        aspect-ratio: 13/17;
        flex-direction: column; 
        text-align: center; 
        justify-content: center; 
        padding-top: 12rem; 
        background: url('../images/hero-minibg.png') no-repeat center top/cover;
    }
    .hero-text { max-width: 100%; padding-right: 0; margin-bottom: 4rem; padding-top: 12rem; }
    .hero-text h1 { font-size: 4rem; }
    
    .hero-visual { justify-content: center; width: 100%; }
    
    .stats-grid, .engine-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-item {background-color: #F4F6F9; padding: 16px 0; border-radius: 8px;}
    .stat-item:not(:last-child)::after { display: none; } 
    .stats-bar { padding-top: 0; }
    .tab-content { grid-template-columns: 1fr; }
    .feature-visual { order: -1; margin-bottom: 3rem; }
    .visual-placeholder {box-shadow: var(--shadow-md)}
    .visual-placeholder img { object-fit: contain; height: auto;}

    
    .coverage-container { grid-template-columns: 1fr; }
    .coverage-sub-cards { grid-template-columns: repeat(3, 1fr); }
    
    .alliance-grid { grid-template-columns: repeat(2, 1fr); }
    .partners-logos { grid-template-columns: repeat(3, 1fr); }
}

/* 默认（桌面端） */
.carousel-indicators {
    display: none;
}

@media (max-width: 768px) {
    section { padding: 40px 0; }
    .container { width: 92%; padding: 0;}
    
    /* 头部 */
    .site-header {height: 56px;}
    .main-nav { display: none; }
    .header-actions { display: flex;width: 77px;justify-content: end; opacity: 1; pointer-events: auto; }
    /* .site-header .container { justify-content: center; } */
    
    /* 首屏 */
    .hero-content { width: 100%; aspect-ratio: 13/17; }
    .hero-text h1 { font-size: 2.8rem; }
    .hero-desc { display: none; }
    .stat-number {margin-bottom: 0;}
    /* 数据统计 */
    /* .stats-grid { grid-template-columns: 1fr; gap: 30px; } */
    
    
    /* 标签页 */
    .tabs-nav { gap: 0px; }
    .tabs-body { padding: 0; }
    .tab-content { gap: 0px; }
    .tab-btn { font-size: 1.6rem; }
    .tab-btn.active { font-size: 1.8rem; }
    .feature-visual {min-height: auto;}
    /* 引擎 */
    /* .engine-section .container { padding: 0; margin: 0 auto; } */
    .engine-section .section-header {margin-bottom: 6rem;padding: 0 24px;}
    .engine-grid h3 { font-size: 1.6rem; }
    .engine-card {padding: 0; opacity: 0.6; transition: opacity 0.3s ease, transform 0.3s ease;}
    .engine-card.fade-up.visible {opacity: 0.6;}
    .engine-card.fade-up.visible.active {opacity: 1;}
    .engine-card.active {opacity: 1;}
    .engine-card.active .card-icon {transform: translateY(-6px);}
    .engine-card:hover {transform: none;}
    .card-icon {width: 88px; height: 88px; transition: transform 0.3s ease; margin: 0 auto 16px;}
    .card-progress {display: none;}
    .coverage-sub-cards { grid-template-columns: 1fr; }

    .products-section { padding: 60px 0;}
    .products-section .section-header {margin-bottom: 4rem;padding: 0 42px;}
    .products-section .tabs-wrapper { padding-bottom: 0; }
    .partners-logos { grid-template-columns: repeat(2, 1fr); }
    
    /* 移动端功能轮播 */
    .feature-list {
        display: flex;
        flex-direction: row;
        overflow: hidden;
        width: 100%;
        gap: 0; /* 移除间距实现无缝滑动 */
    }
    
    .feature-item {
        min-width: 100%;
        width: 100%;
        flex: 0 0 100%;
        padding: 0 10px; /* 如有需要可添加一些内边距 */
        border: none;
        background: transparent !important; /* 移除移动端的背景色 */
        box-shadow: none !important;
    }

    .feature-item.active {
        background: transparent !important;
        box-shadow: none !important;
        color: #333 !important;
        border-color: transparent !important;
    }
    
    .feature-item .desc {
        display: block; /* 移动端始终显示描述 */
        color: #666;
        font-size: 1.5rem;
        margin-top: 0.6rem;
        opacity: 1;
        height: auto;
    }

    .feature-item .text {
        display: block;
        font-size: 1.8rem;
    }

    .feature-item .icon {
        display: none; 
    }
    
    .feature-title {
        margin-bottom: 0.6rem;
    }
    
    /* 指示器 */
    .carousel-indicators {
        display: flex;
        justify-content: center;
        gap: 8px;
        margin-top: 20px;
        width: 100%;
    }
    
    .indicator {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: #D8D8D8;
        transition: all 0.3s ease;
        cursor: pointer;
    }
    
    .indicator.active {
        width: 24px;
        border-radius: 3px;
        background: var(--primary-color);
    }

    /* 页脚 */
    .footer-layout { flex-direction: column; text-align: center; height: auto;}
    .footer-logo { justify-content: center; margin-bottom: 40px; }
    .footer-right { flex-direction: column-reverse; gap: 16px; padding-bottom: 24px; border-bottom: 0.5px solid #CCCCCC;}
    .footer-right .business h4 {display: none;}
    .footer-right .business ul {gap:0;}
    .footer-right .business li {border-bottom: 0.5px solid #CCCCCC; padding: 16px 0;}
    .footer-col ul {gap:12px;}
    .footer-col h4 {font-size: 1.4rem; color: #000e; margin-bottom: 1.6rem; font-weight: 400;}
    .footer-col span, .footer-col a { font-size: 1.4rem; color: #000e;}
    .footer-bottom {display: none;}
    .bottom-center {display: flex; flex-direction: column; gap: 8px; justify-content: center; }
    .bottom-center .copyright {margin-top: 16px; font-size: 1.2rem;}
    .bottom-center .icp-info {display: flex; flex-wrap: wrap; justify-content: center; align-items: center; font-size: 1.2rem; }

    .coverage-section { min-height: auto; padding: 40px 0; margin: 40px 0;}
    .coverage-section .container { padding: 0; width: 100%;}
    .coverage-section .section-header { margin-bottom: 3.6rem; }
    .coverage-container {
        display: flex !important;
        flex-direction: row;
        overflow-x: auto;
        overflow-y: hidden;
        height: auto;
        gap: 12px;
        padding: 0 24px;
        -webkit-overflow-scrolling: touch;
        scroll-snap-type: x mandatory;
        /* 隐藏滚动条 */
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    
    /* Webkit浏览器隐藏滚动条 */
    .coverage-container::-webkit-scrollbar {
        display: none;
    }
    
    .phone {
        display: block;
        scroll-snap-align: start;
        background: transparent;
        width: 15px !important;
        flex: 0 0 auto !important;
    }
    .coverage-card {
        flex: 0 0 334px !important;
        min-width: 300px;
        aspect-ratio: 7/5;
        scroll-snap-align: start;
    }
    .coverage-card h3{
        font-size: 1.8rem;
        color: #333 !important;
        margin-bottom: 0.2rem;
    }
    .content-expanded .card-desc {
        font-size: 1.4rem;
    }
    .app-icons-row img {
        width: 48px;
        height: 48px;
    }
    
    /* 移动端：移除折叠态伪元素背景图 */
    .coverage-card::before {
        display: none;
    }
    
    /* 移动端：所有卡片始终保持展开状态 */
    .coverage-card .content-collapsed {
        display: none !important;
    }

    .coverage-card .content-expanded {
        display: flex !important;
        opacity: 1 !important;
    }
    
    /* 移动端：始终显示大图背景 */
    .coverage-card::after {
        opacity: 0.4 !important;
    }
    
    /* 移动端：描述文字始终可见 */
    .card-desc {
        display: block !important;
        opacity: 1 !important;
        transform: none !important;
    }
    /* 移动端：所有卡片的图标都滚动 */
    .coverage-card .marquee-track {
        animation: marquee 10s linear infinite;
    }
    .content-expanded {
        padding: 24px;
    }

    /* 移动端：描述文字始终可见 */
    .alliance-section .section-header {
        padding: 0 50px;
        margin-bottom: 3.6rem;
    } 


    .alliance-grid {
       gap: 12px;
    }

    .alliance-item {
        padding: 24px;
        border-radius: 8px;
    } 

    .alliance-item .item-icon{
        width: 32px;
        height: 32px;
        margin-bottom: 0.8rem;
    }

    .alliance-item h4 {
        font-size: 1.4rem;
        margin-bottom: 0;
    }

    .alliance-item p {
        display: none;
    }
    .alliance-item p.desc {
        display: block !important;
        font-size: 1.2rem;
    }

    /* partners-section */
    .partners-section .section-header{
        margin-bottom: 3.6rem;
    }
    .logo-item {
        width: 112px;
    }

}