/* 全局重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #1a1a1a;
    overflow-x: hidden;
}

/* 黑色主题色彩 */
:root {
    --sf-primary: #1a1a1a;
    --sf-primary-dark: #000000;
    --sf-primary-light: #333333;
    --sf-secondary: #FF6600;
    --sf-accent: #00CCFF;
    --sf-success: #00CC66;
    --sf-warning: #FFCC00;
    --sf-danger: #FF3366;
    --sf-dark: #1a1a1a;
    --sf-gray: #999;
    --sf-light-gray: #2a2a2a;
    --sf-white: #ffffff;
    --sf-gradient: linear-gradient(135deg, #1a1a1a 0%, #333333 100%);
    --sf-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    --sf-shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.5);
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

/* 导航栏滚动效果 */
.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-logo .logo {
    height: 32px;
    width: auto;
    transition: all 0.3s ease;
}

.brand-text-container {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.brand-text-cn {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    line-height: 1.2;
    transition: color 0.3s ease;
}

.brand-text-en {
    font-size: 0.75rem;
    font-weight: 400;
    color: rgba(51, 51, 51, 0.7);
    line-height: 1.2;
    letter-spacing: 0.5px;
    transition: color 0.3s ease;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #007bff;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #007bff;
    transition: width 0.3s ease;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.login-btn {
    background: var(--sf-gradient);
    color: white;
    border: none;
    padding: 0.6rem 1.5rem;
    border-radius: 25px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--sf-shadow);
}

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

.language-switch {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.lang-option {
    color: rgba(51, 51, 51, 0.6);
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 4px 8px;
    border-radius: 4px;
}

.lang-option:hover {
    color: #007bff;
    background: rgba(0, 123, 255, 0.1);
}

.lang-option.active {
    color: #007bff;
    font-weight: 600;
    background: rgba(0, 123, 255, 0.15);
}

.lang-divider {
    color: var(--sf-gray);
}

/* 主要内容 */
.main-content {
    margin-top: 70px;
}

/* 英雄区域 */
.hero-section {
    min-height: 100vh;
    min-height: calc(var(--vh, 1vh) * 100);
    background: #000000;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(10px, 10px); }
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 4rem 2rem;
    position: relative;
    z-index: 2;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3rem;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.hero-top {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.hero-bottom {
    width: 100%;
    display: flex;
    gap: 3rem;
    align-items: center;
    justify-content: space-between;
    margin-top: 2rem;
}

.hero-text {
    color: white;
}

/* 轮播图样式 */
.carousel-container {
    position: relative;
    height: 400px;
    border-radius: 15px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-slide.active {
    opacity: 1;
}

.carousel-content {
    text-align: center;
    color: white;
    background: rgba(0, 0, 0, 0.3);
    padding: 2rem;
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.carousel-content h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.carousel-content p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.carousel-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}

.carousel-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-indicator.active {
    background: var(--sf-accent);
    transform: scale(1.2);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(45deg, #ffffff, #e6f3ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 3rem;
    opacity: 0.9;
}

/* 服务选择标签 */
.service-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.service-tab {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.2);
    padding: 0.8rem 2rem;
    border-radius: 25px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.service-tab.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.service-tab:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}

/* 服务内容 */
.service-content {
    position: relative;
}

.service-panel {
    display: none;
    animation: fadeInUp 0.5s ease;
}

.service-panel.active {
    display: block;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.service-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 15px;
    display: flex;
    align-items: center;
    gap: 1rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.service-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.service-icon {
    font-size: 2rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
}

.service-info h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.service-info p {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* 3D地球容器 */
.globe-container {
    position: relative;
    width: 500px;
    height: 500px;
    background: transparent;
    border-radius: 0;
    overflow: visible;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.globe-element {
    width: 100%;
    height: 100%;
    border-radius: 50%;
}

/* 统计数据 */
.stats-section {
    flex: 1;
    background: rgba(0, 0, 0, 0.95);
    border-radius: 20px;
    padding: 2rem;
}

.stats-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.stat-item {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #0066cc;
}

.stat-number-line {
    display: flex;
    align-items: baseline;
    margin-bottom: 0.25rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: white;
}

.stat-label {
    font-size: 0.85rem;
    color: #cccccc;
    margin-bottom: 0.25rem;
    line-height: 1.3;
}

.stat-unit {
    font-size: 0.85rem;
    color: #999999;
    margin-left: 0.25rem;
}

.stat-plus {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    margin-left: 0.25rem;
    margin-right: 0.25rem;
}

.stat-percent {
    font-size: 0.8rem;
    color: #999999;
    margin-top: 0.25rem;
}

.stat-extra {
    font-size: 0.8rem;
    color: #999999;
    margin-top: 0.25rem;
}

.data-note {
    text-align: center;
    font-size: 0.75rem;
    color: #666666;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 业务优势 */
.advantages-section {
    padding: 6rem 0;
    background: var(--sf-dark);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 4rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.advantage-item {
    text-align: center;
    padding: 3rem 2rem;
    background: white;
    border-radius: 20px;
    box-shadow: var(--sf-shadow);
    transition: all 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--sf-shadow-hover);
}

.advantage-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.advantage-item h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--sf-dark);
    margin-bottom: 1rem;
}

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

/* 服务承诺 */
.commitment-section {
    padding: 6rem 0;
    background: var(--sf-gradient);
    color: white;
    text-align: center;
}

.commitment-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.commitment-content p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.commitment-features {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    font-weight: 500;
}

.feature-icon {
    width: 24px;
    height: 24px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

/* 页脚 */
.footer {
    background: var(--sf-dark);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    height: 48px;
    width: auto;
    object-fit: contain;
}

.footer-brand p {
    opacity: 0.8;
    font-size: 1.1rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.link-group h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--sf-accent);
}

.link-group a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.link-group a:hover {
    color: var(--sf-accent);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.6;
}

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* 移动端汉堡菜单 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

.mobile-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    z-index: 999;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu-content {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.mobile-menu .nav-link {
    padding: 0.8rem 1rem;
    border-radius: 8px;
    transition: background 0.3s ease;
}

.mobile-menu .nav-link:hover {
    background: rgba(0, 123, 255, 0.1);
}

.mobile-nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

/* 确保移动端语言切换按钮显示 */
.mobile-nav-actions .language-switch {
    display: flex !important;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    visibility: visible !important;
    opacity: 1 !important;
    width: 100%;
    margin: 0.5rem 0;
}

.mobile-nav-actions .lang-option {
    display: inline-block !important;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    font-weight: 500;
    visibility: visible !important;
    opacity: 1 !important;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.mobile-nav-actions .lang-option:hover {
    background: rgba(0, 123, 255, 0.2);
    transform: translateY(-1px);
}

.mobile-nav-actions .lang-option.active {
    background: rgba(0, 123, 255, 0.2) !important;
    color: #007bff !important;
    border-color: #007bff;
}

.mobile-nav-actions .lang-divider {
    color: rgba(0, 0, 0, 0.3);
    font-weight: normal;
    display: inline-block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .hero-bottom {
        flex-direction: column;
        gap: 2rem;
        align-items: center;
    }
    
    .globe-container {
        height: 500px;
        width: 100%;
    }
    
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
        max-width: 600px;
        margin: 0 auto;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-content {
        gap: 2rem;
    }
}

/* 合作伙伴页面响应式设计 */
@media (max-width: 768px) {
    .partners-hero {
        padding: 100px 0 60px;
    }
    
    .partners-title {
        font-size: 2.2rem;
    }
    
    .partners-subtitle {
        font-size: 1.2rem;
    }
    
    .partners-description {
        font-size: 1rem;
        padding: 0 1rem;
    }
    
    .partners-showcase {
        padding: 60px 0;
    }
    
    .partners-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }
    
    .partner-card {
        padding: 1.5rem;
    }
    
    .partner-header {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }
    
    .partner-logo {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .partner-highlights {
        justify-content: center;
    }
    
    .partnership-advantages {
        padding: 60px 0;
    }
    
    .partnership-advantages .section-title {
        font-size: 2rem;
        margin-bottom: 2rem;
    }
    
    .partnership-advantages .advantages-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }
    
    .partnership-advantages .advantage-item {
        padding: 1.5rem;
    }
    
    .partnership-advantages .advantage-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }

    /* 导航栏移动端适配 */
}

/* 合作伙伴页面样式 */
.partners-hero {
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
    padding: 120px 0 80px;
    color: white;
    text-align: center;
}

.partners-hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.partners-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #ffffff 0%, #00ccff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.partners-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.8);
}

.partners-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.7);
    max-width: 700px;
    margin: 0 auto;
}

/* 合作伙伴展示区域 */
.partners-showcase {
    padding: 80px 0;
    background: #f8f9fa;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.partner-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.partner-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.partner-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.partner-logo {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #007bff 0%, #00ccff 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.partner-logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 12px;
    padding: 8px;
    background: white;
}

.partner-info h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.25rem;
}

.partner-type {
    font-size: 0.9rem;
    color: #007bff;
    font-weight: 500;
    background: rgba(0, 123, 255, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    display: inline-block;
}

.partner-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.partner-brief {
    font-size: 1rem;
    line-height: 1.6;
    color: #666;
}

.partner-details {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #007bff;
    text-align: left;
}

.partner-details p {
    text-indent: 2em;
    text-align: left;
}

.details-placeholder {
    color: #999;
    font-style: italic;
    text-align: left;
    padding: 1rem 0;
}

.partner-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 204, 102, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    color: #00cc66;
    font-weight: 500;
}

.highlight-item i {
    font-size: 0.8rem;
}

/* 合作优势区域 */
.partnership-advantages {
    padding: 80px 0;
    background: white;
}

.partnership-advantages .section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 3rem;
}

.partnership-advantages .advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.partnership-advantages .advantage-item {
    text-align: center;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 16px;
    transition: all 0.3s ease;
}

.partnership-advantages .advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.partnership-advantages .advantage-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #007bff 0%, #00ccff 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.partnership-advantages .advantage-item h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 1rem;
}

.partnership-advantages .advantage-item p {
    color: #666;
    line-height: 1.6;
}

/* 导航栏活动状态 */
.nav-link.active {
    color: #007bff;
    font-weight: 600;
}

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

@media (max-width: 768px) {
    
    @media (max-width: 768px) {
        /* 导航栏移动端适配 */
        .nav-container {
            padding: 0 1rem;
            height: 60px;
        }
        
        .nav-menu {
            display: none;
        }
        
        .mobile-menu-toggle {
            display: flex;
        }
        
        .nav-actions {
            display: none;
        }
        
        .brand-text-container {
            display: none;
        }
        
        .nav-logo .logo {
            height: 28px;
        }
        
        /* 主要内容适配 */
        .main-content {
            margin-top: 60px;
        }
        
        .hero-container {
            padding: 1.5rem 1rem;
        }
        
        .hero-content {
            gap: 1.5rem;
        }
        
        .hero-title {
            font-size: 2.2rem;
            line-height: 1.3;
        }
        
        .hero-description {
            font-size: 1rem;
            line-height: 1.6;
            margin-bottom: 2rem;
        }
        
        /* 轮播图移动端适配 */
        .carousel-container {
            height: 250px;
            border-radius: 10px;
        }
        
        .carousel-content {
            padding: 1.5rem;
        }
        
        .carousel-content h3 {
            font-size: 1.5rem;
            margin-bottom: 0.8rem;
        }
        
        .carousel-content p {
            font-size: 0.95rem;
        }
        
        /* 服务选择移动端适配 */
        .service-tabs {
            flex-direction: row;
            gap: 0.5rem;
            justify-content: center;
        }
        
        .service-tab {
            padding: 0.6rem 1.2rem;
            font-size: 0.9rem;
            flex: 1;
            text-align: center;
        }
        
        .service-grid {
            grid-template-columns: 1fr;
            gap: 1rem;
        }
        
        .service-item {
            padding: 1rem;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        /* 地球和统计数据移动端适配 */
        .hero-bottom {
            flex-direction: column;
            gap: 1.5rem;
            margin-top: 1rem;
        }
        
        .globe-container {
            height: 300px;
            width: 100%;
        }
        
        .stats-container {
            grid-template-columns: 1fr;
            gap: 1rem;
            width: 100%;
        }
        
        .stat-item {
            padding: 1.2rem;
            text-align: center;
        }
        
        .stat-number {
            font-size: 2rem;
        }
        
        .stat-plus {
            font-size: 1.5rem;
        }
        
        .stat-unit {
            font-size: 1rem;
        }
        
        .stat-label {
            font-size: 0.9rem;
            margin: 0.5rem 0;
        }
        
        .stat-extra {
            font-size: 0.8rem;
            line-height: 1.4;
        }
        
        /* 业务优势移动端适配 */
        .advantages-grid {
            grid-template-columns: 1fr;
            gap: 1rem;
        }
        
        .advantage-item {
            padding: 1.2rem;
        }
        
        /* 服务承诺移动端适配 */
        .commitment-features {
            flex-direction: column;
            gap: 1rem;
            align-items: stretch;
        }
        
        .feature-item {
            justify-content: center;
            padding: 0.8rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        /* 页脚移动端适配 */
        .footer {
            padding: 2rem 0 1rem;
        }
        
        .footer-content {
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        
        .footer-links {
            grid-template-columns: repeat(3, 1fr);
            gap: 1rem;
        }
        
        .link-group {
            text-align: center;
        }
    }
    
    @media (max-width: 480px) {
        /* 超小屏幕适配 */
        .hero-container {
            padding: 1rem 0.8rem;
        }
        
        .hero-title {
            font-size: 1.8rem;
            line-height: 1.2;
        }
        
        .hero-description {
            font-size: 0.9rem;
            margin-bottom: 1.5rem;
        }
        
        .carousel-container {
            height: 200px;
        }
        
        .carousel-content {
            padding: 1rem;
        }
        
        .carousel-content h3 {
            font-size: 1.2rem;
        }
        
        .carousel-content p {
            font-size: 0.85rem;
        }
        
        .service-tabs {
            flex-direction: column;
            gap: 0.3rem;
        }
        
        .service-tab {
            padding: 0.5rem 1rem;
            font-size: 0.85rem;
        }
        
        .globe-container {
            height: 250px;
        }
        
        .stat-item {
            padding: 1rem;
        }
        
        .stat-number {
            font-size: 1.8rem;
        }
        
        .stat-plus {
            font-size: 1.3rem;
        }
        
        .stat-label {
            font-size: 0.85rem;
        }
        
        .stat-extra {
            font-size: 0.75rem;
        }
        
        .section-title {
            font-size: 1.8rem;
        }
        
        .nav-container {
            padding: 0 0.8rem;
        }
    }
    
    /* 横屏模式适配 */
    @media (max-width: 768px) and (orientation: landscape) {
        .hero-section {
            min-height: auto;
            padding: 1rem 0;
        }
        
        .hero-container {
            padding: 1rem;
        }
        
        .hero-bottom {
            flex-direction: row;
            gap: 2rem;
        }
        
        .globe-container {
            height: 300px;
            flex: 1;
        }
        
        .stats-container {
            grid-template-columns: repeat(2, 1fr);
            flex: 1;
        }
        
        .carousel-container {
            height: 200px;
        }
    }
    
    /* 触摸设备优化 */
    @media (hover: none) and (pointer: coarse) {
        .service-tab:hover,
        .nav-link:hover,
        .login-btn:hover {
            transform: none;
        }
        
        .service-tab:active,
        .nav-link:active,
        .login-btn:active {
            transform: scale(0.98);
        }
    }

/* 移动设备特定样式 */
.mobile-device .hero-section {
    background-attachment: scroll;
}

.mobile-device .carousel-slide {
    background-attachment: scroll !important;
}

/* 防止移动端缩放 */
@media (max-width: 768px) {
    input, textarea, select {
        font-size: 16px !important;
    }
}

/* 移动端滚动优化 */
@media (max-width: 768px) {
    body {
        -webkit-overflow-scrolling: touch;
    }
    
    .hero-section,
    .stats-section,
    .advantages-section,
    .commitment-section {
        transform: translateZ(0);
        -webkit-transform: translateZ(0);
    }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .nav-logo .logo,
    .footer-logo {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}