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

/* 强制消除所有边距å'Œè¾¹æ¡† */
html, body, main, section {
    margin: 0 !important;
    border: none !important;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
}

/* 导航栏样式 */
.navbar {
    background: #000000;
    padding: 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
    height: 75px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    font-size: 36px;
    filter: drop-shadow(0 3px 6px rgba(0, 0, 0, 0.4));
    transition: transform 0.3s ease;
}

.logo-icon:hover {
    transform: scale(1.1);
}

.logo-text {
    font-size: 26px;
    font-weight: 800;
    color: #ffffff;
    text-shadow: 0 3px 6px rgba(0, 0, 0, 0.4);
    letter-spacing: 0.5px;
    background: linear-gradient(135deg, #ffffff 0%, #e8e8e8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all 0.3s ease;
}

.logo-text:hover {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.language-selector {
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    color: #ffffff;
    cursor: pointer;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

#current-language {
    font-size: 14px;
    font-weight: 500;
    color: #ffffff;
}

.language-icon {
    width: 16px;
    height: 16px;
    opacity: 0.8;
}

.language-selector:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(79, 172, 254, 0.3);
    box-shadow: 0 4px 15px rgba(79, 172, 254, 0.2);
    transform: translateY(-1px);
}

.login-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
    border: none;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(79, 172, 254, 0.3);
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 172, 254, 0.4);
    background: linear-gradient(135deg, #4facfe 20%, #00f2fe 100%);
}

.login-btn:active {
    transform: translateY(0);
}

.language-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 12px;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(25px);
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
    min-width: 140px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-15px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
}

.language-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-option {
    padding: 14px 20px;
    color: #ffffff;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.3px;
}

.language-option:hover {
    background: rgba(79, 172, 254, 0.15);
    color: #4facfe;
    transform: translateX(3px);
}

.language-option:first-child {
    border-radius: 15px 15px 0 0;
}

.language-option:last-child {
    border-radius: 0 0 15px 15px;
}

/* 主要内容区域 */
.main-content {
    background: url('./img/xz.webp') center/cover no-repeat fixed;
    background-attachment: fixed;
    min-height: 100vh;
    padding: 0;
    position: relative;
    overflow: hidden;
    margin: 0;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 地球背景容器 */
.main-content::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80vw;
    height: 80vw;
    max-width: 800px;
    max-height: 800px;
    background: url('./img/earth.webp') center/cover no-repeat;
    border-radius: 50%;
    opacity: 0.85;
    animation: earthRotate 60s linear infinite;
    z-index: 0;
    box-shadow: 
        inset -80px -80px 160px rgba(0, 0, 0, 0.8),
        0 0 250px rgba(79, 172, 254, 0.4),
        0 0 500px rgba(79, 172, 254, 0.2);
}

.main-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: transparent;
    pointer-events: none;
    z-index: 1;
}

.content-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 30px;
    position: relative;
    z-index: 2;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 90vh;
    padding-top: 60px;
}

.hero-section {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 20px;
    margin-bottom: 60px;
}

.hero-left {
    max-width: 800px;
    width: 100%;
    text-align: center;
    margin: 0 auto;
    padding: 40px 0 60px;
}

.hero-title {
    font-size: 42px;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 25px;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.3;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 15px;
}

.title-line {
    white-space: nowrap;
    width: 100%;
    text-align: center;
}

.download-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 20px;
}

.download-btn {
    padding: 12px 35px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 50px;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    margin-bottom: 40px;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 172, 254, 0.4);
    background: linear-gradient(135deg, #4facfe 20%, #00f2fe 100%);
}

.download-btn:active {
    transform: translateY(0);
}

.streaming-text {
    color: #4facfe;
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 25px !important;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    width: 100%;
    text-align: center;
}

.platform-text {
    color: rgba(255, 255, 255, 0.9);
    font-size: 14px;
    margin-bottom: 35px !important;
    font-weight: 400;
    width: 100%;
    text-align: center;
}

.platform-icons {
    display: flex;
    justify-content: center;
    gap: 30px;
    width: 100%;
    margin-bottom: 40px;
}

.platform-icon {
    width: 65px;
    height: 65px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.platform-icon:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(79, 172, 254, 0.4);
    background: rgba(255, 255, 255, 1);
}

.platform-icon:active {
    transform: translateY(0);
}

.platform-icon.android:hover {
    color: #3ddc84;
}

.platform-icon.ios:hover {
    color: #007aff;
}

.platform-icon.windows:hover {
    color: #0078d4;
}

/* åŠç"»æ•ˆæžœ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes earthRotate {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* å"åº"å¼'设计 */
@media (max-width: 768px) {
    .hero-section {
        flex-direction: column;
        text-align: center;
        padding: 40px 0;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 15px;
        text-align: center;
        padding: 0 20px;
    }
    
    .footer-links {
        gap: 16px;
        margin-right: 80px;
    }
    
    .footer-links a {
        font-size: 13px;
    }
    
    .nav-container {
        padding: 0 15px;
    }
    
    .nav-right {
        gap: 12px;
    }
    
    .login-btn {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .logo-text {
        font-size: 20px;
    }
    
    .content-container {
        padding: 0 15px;
    }
    
    .language-selector {
        padding: 6px 12px;
    }
    
    #current-language {
        font-size: 13px;
    }
    
    .language-icon {
        width: 14px;
        height: 14px;
    }
    
    .language-menu {
        min-width: 120px;
    }
    
    .language-option {
        padding: 12px 16px;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .download-btn {
        padding: 14px 24px;
        font-size: 16px;
    }
    
    .platform-icons {
        justify-content: center;
        gap: 20px;
        margin-bottom: 35px;
    }
    
    .platform-icon {
        width: 68px;
        height: 68px;
        font-size: 30px;
        border-radius: 17px;
    }
    
    .streaming-text {
        font-size: 16px;
        padding: 0 10px;
        margin-bottom: 25px;
        margin-top: 22px;
    }
    
    .platform-text {
        font-size: 16px;
        margin-bottom: 35px;
        margin-top: 26px;
    }
    
    .language-selector {
        padding: 4px 10px;
    }
    
    #current-language {
        font-size: 12px;
    }
    
    .language-icon {
        width: 12px;
        height: 12px;
    }
    
    .footer-links {
        gap: 12px;
        flex-wrap: wrap;
        justify-content: center;
        margin-right: 60px;
    }
    
    .footer-links a {
        font-size: 12px;
    }
}

/* 背景图ç‰'å¤'é€'æ–¹æ¡' */
/* å¦æžœéœ€è¦'æ›´æ¢èƒŒæ™'，å¯ä»¥å–æ¶'æ³'释下é¢çš„任一é€'é¡' */

/*
å¤'é€'背æ™'1 - æŠè±¡è"è‰'å'何
.main-content {
    background: 
        linear-gradient(135deg, rgba(135, 206, 235, 0.8) 0%, rgba(152, 228, 255, 0.8) 25%, rgba(135, 206, 235, 0.8) 50%, rgba(176, 224, 230, 0.8) 75%, rgba(135, 206, 235, 0.8) 100%),
        url('https://images.unsplash.com/photo-1524995997946-a1c2e315a42f?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
}
*/

/*
å¤'é€'背æ™'2 - ç'技äº'朵
.main-content {
    background: 
        linear-gradient(135deg, rgba(135, 206, 235, 0.8) 0%, rgba(152, 228, 255, 0.8) 25%, rgba(135, 206, 235, 0.8) 50%, rgba(176, 224, 230, 0.8) 75%, rgba(135, 206, 235, 0.8) 100%),
        url('https://images.unsplash.com/photo-1578374173705-5b28e8c2099b?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
}
*/

/*
å¤'é€'背æ™'3 - æ¢å¹'å©ç©'
.main-content {
    background: 
        linear-gradient(135deg, rgba(135, 206, 235, 0.8) 0%, rgba(152, 228, 255, 0.8) 25%, rgba(135, 206, 235, 0.8) 50%, rgba(176, 224, 230, 0.8) 75%, rgba(135, 206, 235, 0.8) 100%),
        url('https://images.unsplash.com/photo-1518837695005-2083093ee35b?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
}
*/

/*
å¦æžœè¦'使ç"本地图ç'，å¯ä»¥è¿™æ ·è®¾ç½'：
.main-content {
    background: 
        linear-gradient(135deg, rgba(135, 206, 235, 0.8) 0%, rgba(152, 228, 255, 0.8) 25%, rgba(135, 206, 235, 0.8) 50%, rgba(176, 224, 230, 0.8) 75%, rgba(135, 206, 235, 0.8) 100%),
        url('./background.jpg') center/cover no-repeat;
}
*/

/* 底部信息 */
.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    z-index: 100;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    height: 60px;
    display: flex;
    align-items: center;
}

.footer-left {
    flex: 1;
    display: flex;
    align-items: center;
}

.footer-left span {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    font-weight: 400;
}

.footer-links {
    display: flex;
    gap: 24px;
    padding-right: 120px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding-bottom: 2px;
    white-space: nowrap;
}

.footer-links a:hover {
    color: #4facfe;
}

.footer-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: #4facfe;
    transition: width 0.3s ease;
}

.footer-links a:hover::after {
    width: 100%;
}

@media (max-width: 768px) {
    .footer-container {
        padding: 0 20px;
    }
    
    .footer-links {
        gap: 16px;
        padding-right: 80px;
    }
    
    .footer-links a {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .footer-links {
        gap: 12px;
        padding-right: 60px;
    }
    
    .footer-links a {
        font-size: 12px;
    }
}