body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #1a1a1a, #2d2d2d);
    color: #fff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(125deg, #00ff8866, #00ffff66, #ff00ff66);
    animation: gradientMove 15s ease infinite;
    z-index: -1;
    filter: blur(100px);
}

@keyframes gradientMove {
    0%, 100% {
        background-position: 0% 50%;
        transform: translateZ(0);
    }
    25% {
        background-position: 100% 50%;
        transform: translateZ(0);
    }
    50% {
        background-position: 50% 100%;
        transform: translateZ(0);
    }
    75% {
        background-position: 0% 50%;
        transform: translateZ(0);
    }
    100% {
        background-position: 50% 0%;
        transform: translateZ(0);
    }
}

body.light-theme::before {
    background: linear-gradient(125deg, #2196f366, #00bcd466, #e91e6366);
    opacity: 0.6;
}

body::before {
    background-size: 400% 400%;
}

.container {
    text-align: center;
    padding: 20px;
    margin-top: 20px;
    width: 100%;
    box-sizing: border-box;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    transform: translateZ(0);
    will-change: transform;
}

.logo {
    width: 100px;
    height: 100px;
    margin-bottom: 20px;
}

h1 {
    font-size: 2em;
    margin-bottom: 15px;
}

.download-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
    padding: 0 20px;
    margin: 30px auto;
    max-width: 600px;
}

.download-button {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    min-width: 200px;
    border-radius: 50px;
    color: white;
    text-decoration: none;
    font-size: 1.2em;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    transform: translateZ(0);
    will-change: transform;
}

.download-button i {
    font-size: 2rem;
}

.platform-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.download-button:hover .platform-icon {
    transform: scale(1.1);
}

.button-text {
    display: flex;
    flex-direction: column;
}

.button-text small {
    font-size: 0.8rem;
    opacity: 0.9;
}

.button-text strong {
    font-size: 1.1rem;
}

.android {
    background: #3DDC84;
    box-shadow: 0 4px 15px rgba(61, 220, 132, 0.3);
}

.ios {
    background: #007AFF;
    box-shadow: 0 4px 15px rgba(0, 122, 255, 0.3);
}

.windows {
    background: #00A4EF;
    box-shadow: 0 4px 15px rgba(0, 164, 239, 0.3);
}

.download-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

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

.features {
    margin-top: 50px;
    max-width: 1200px;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
    margin-left: auto;
    margin-right: auto;
}

.features h2 {
    color: #fff;
    margin-bottom: 30px;
    text-align: center;
}

.feature-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    justify-content: center;
    margin: 0 auto;
}

.feature-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 20px;
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease;
    transform: translateZ(0);
    will-change: transform;
}

.feature-card:hover {
    transform: translateY(-5px) translateZ(20px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.feature-card h3 {
    color: #fff;
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 1.2em;
}

.feature-card p {
    color: #ddd;
    margin: 0;
    line-height: 1.5;
}

@media (max-width: 900px) {
    .feature-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .download-buttons {
        flex-direction: column;
        padding: 0;
        gap: 15px;
        width: 90%;
        max-width: 280px;
        margin: 30px auto;
        align-items: center;
        margin-left: auto;
        margin-right: auto;
    }

    .download-button {
        width: 100%;
        min-width: unset;
        padding: 12px 20px;
        font-size: 1.1em;
        display: flex;
        justify-content: center;
        align-items: center;
        margin: 0;
        box-sizing: border-box;
    }

    .download-button i {
        width: 20px;
        height: 20px;
        margin-right: 8px;
    }

    .features {
        padding: 0 15px;
        margin-top: 30px;
    }

    .feature-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
        width: 100%;
    }

    .feature-card {
        padding: 15px;
    }

    .feature-card h3 {
        font-size: 1.1em;
    }

    .feature-card p {
        font-size: 0.9em;
    }

    .download-buttons > * {
        margin-left: 0;
        margin-right: 0;
    }
}

@media (max-width: 600px) {
    .feature-cards {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .download-buttons {
        width: 85%;
        max-width: 260px;
    }
}

@media (max-width: 320px) {
    .logo {
        width: 80px;
        height: 80px;
    }

    h1 {
        font-size: 1.8em;
    }

    .container {
        padding: 10px;
    }

    .download-buttons {
        width: 80%;
        max-width: 240px;
    }

    .download-button {
        padding: 10px 15px;
        font-size: 1em;
    }

    .download-button i {
        width: 18px;
        height: 18px;
    }

    .features {
        padding: 0 10px;
    }

    .feature-card {
        padding: 12px;
    }
}

/* 添加主题相关的CSS变量 */
:root {
    --bg-gradient-dark: linear-gradient(135deg, #1a1a1a, #2d2d2d);
    --bg-gradient-light: linear-gradient(135deg, #f5f5f5, #e0e0e0);
    --text-color-dark: #fff;
    --text-color-light: #333;
    --card-bg-dark: rgba(255, 255, 255, 0.1);
    --card-bg-light: rgba(0, 0, 0, 0.05);
    --card-text-dark: #ddd;
    --card-text-light: #666;
}

/* 主题切换按钮样式 */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1000;
    color: white; /* 默认暗色模式下为白色 */
}

.theme-toggle svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
    transition: transform 0.3s ease;
}

.theme-toggle:hover svg {
    transform: rotate(30deg);
}

/* 明亮主题样式优化 */
body.light-theme {
    background: var(--bg-gradient-light);
    color: var(--text-color-light);
}

.light-theme .features h2,
.light-theme .partners-container h2 { /* 添加合作伙伴标题的选择器 */
    color: var(--text-color-light); /* 标题改为深色 */
}

.light-theme .feature-card {
    background: var(--card-bg-light);
}

.light-theme .feature-card h3 {
    color: var(--text-color-light); /* 卡片标题改为深色 */
}

.light-theme .feature-card p {
    color: var(--card-text-light); /* 卡片描述文字改为深灰色 */
}

/* 明亮主题下的按钮颜色 */
body.light-theme .theme-toggle {
    color: #333; /* 明亮模式下改为深色 */
}

/* 适配移动端主题切换按钮 */
@media (max-width: 768px) {
    .theme-toggle {
        top: 10px;
        right: 10px;
    }
}

/* 下载量统计样式更新 */
.download-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin: 30px auto;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    max-width: 600px;
    flex-direction: row; /* 确保水平排列 */
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    padding: 15px;
    border-radius: 10px;
    transition: all 0.3s ease;
    transform: translateZ(0);
    will-change: transform;
}

.stat-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.stat-number {
    font-size: 1.8em;
    font-weight: bold;
    color: var(--text-color-dark);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
}

.stat-label {
    font-size: 0.9em;
    color: var(--card-text-dark);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards 0.2s;
}

/* 添加动画关键帧 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 为每个统计项添加不同的动画延迟 */
.stat-item:nth-child(1) .stat-number { animation-delay: 0.2s; }
.stat-item:nth-child(2) .stat-number { animation-delay: 0.4s; }
.stat-item:nth-child(3) .stat-number { animation-delay: 0.6s; }
.stat-item:nth-child(1) .stat-label { animation-delay: 0.4s; }
.stat-item:nth-child(2) .stat-label { animation-delay: 0.6s; }
.stat-item:nth-child(3) .stat-label { animation-delay: 0.8s; }

/* 适配明亮主题 */
.light-theme .download-stats {
    background: var(--card-bg-light);
}

.light-theme .stat-item:hover {
    background: rgba(0, 0, 0, 0.05);
}

.light-theme .stat-number {
    color: var(--text-color-light);
}

.light-theme .stat-label {
    color: var(--card-text-light);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .download-stats {
        flex-direction: row; /* 保持水平排列 */
        gap: 20px; /* 减小间距 */
        padding: 15px;
        margin: 20px auto;
    }

    .stat-item {
        gap: 3px;
    }

    .stat-number {
        font-size: 1.2em; /* 减小字体大小 */
    }

    .stat-label {
        font-size: 0.8em;
    }
}

@media (max-width: 320px) {
    .download-stats {
        gap: 10px; /* 更小的间距 */
        padding: 10px;
    }

    .stat-number {
        font-size: 1em;
    }

    .stat-label {
        font-size: 0.7em;
    }
}

/* 添加返回顶部按钮样式 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    border: none;
    background-color: var(--text-color-dark);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top svg {
    width: 20px;
    height: 20px;
    fill: var(--bg-gradient-dark);
}

.back-to-top:hover {
    transform: translateY(-5px);
}

/* 明亮主题样式 */
.light-theme .back-to-top {
    background-color: var(--text-color-light);
}

.light-theme .back-to-top svg {
    fill: #fff;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 35px;
        height: 35px;
    }
}

/* 添加应用截图轮播区域样式 */
.screenshot-carousel {
    margin: 40px auto;
    max-width: 400px;
    padding: 0 20px;
    position: relative;
}

.carousel-container {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 15px;
}

.carousel-track {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.carousel-slide {
    flex: 0 0 100%;
    padding: 0 10px;
    box-sizing: border-box;
    transform: translateZ(0);
    will-change: transform;
    /* 添加 flex 布局确保内容居中 */
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px; /* 设置最小高度，确保有足够空间 */
}

.carousel-slide img {
    width: 100%;
    max-width: 300px;
    height: auto;
    /* 移除原来的 margin: 0 auto，因为父元素已经用 flex 居中 */
    display: block;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    transform: perspective(1000px) rotateY(0deg);
    transition: transform 0.5s ease;
    /* 确保图片不会超出容器 */
    max-height: 400px;
    object-fit: contain; /* 保持图片比例，完整显示 */
}

.carousel-button {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    border: none;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10; /* 确保按钮在最上层 */
}

.carousel-button:hover {
    background: rgba(255, 255, 255, 0.3);
}

.carousel-button.prev {
    left: 10px;
}

.carousel-button.next {
    right: 10px;
}

.carousel-button svg {
    width: 20px;
    height: 20px;
    fill: white;
}

.carousel-indicators {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    background: white;
    transform: scale(1.2);
}

/* 明亮主题适配 */
.light-theme .carousel-container {
    background: rgba(0, 0, 0, 0.05);
}

.light-theme .carousel-button {
    background: rgba(0, 0, 0, 0.1);
}

.light-theme .carousel-button:hover {
    background: rgba(0, 0, 0, 0.2);
}

.light-theme .carousel-button svg {
    fill: #333;
}

.light-theme .indicator {
    background: rgba(0, 0, 0, 0.2);
}

.light-theme .indicator.active {
    background: #333;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .screenshot-carousel {
        padding: 0 10px;
        margin: 20px auto;
    }

    .carousel-container {
        padding: 15px;
    }

    .carousel-button {
        width: 30px;
        height: 30px;
    }

    .carousel-button svg {
        width: 20px;
        height: 20px;
    }
}

/* 添加视差滚动效果的样式 */
.parallax-container {
    perspective: 1000px;
    transform-style: preserve-3d;
}

.feature-card {
    transform: translateZ(0);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    will-change: transform;
}

.feature-card:hover {
    transform: translateY(-5px) translateZ(20px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

/* 优化移动端触摸反馈 */
@media (hover: none) {
    .feature-card {
        transition: transform 0.2s ease;
    }
    
    .feature-card:active {
        transform: scale(0.98);
        background: rgba(255, 255, 255, 0.15);
    }
}

.contact-section {
    padding: 4rem 2rem;
}

.contact-section h2 {
    text-align: center;
    margin-bottom: 2rem;
}

.contact-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.contact-card {
    padding: 2rem;
    border-radius: 12px;
}

.contact-card h3 {
    margin-bottom: 1.5rem;
    color: #333;
}

.contact-items {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* 改为两列布局 */
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    text-decoration: none;
    color: #333;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    transition: all 0.2s ease;
    background: white;
}

.contact-item:hover {
    transform: translateY(-2px);
    border-color: #4a90e2;
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.1);
}

.contact-item i {
    font-size: 1.5rem;
    width: 24px;
    text-align: center;
}

.contact-item span {
    font-size: 1.1rem;
    font-weight: 500;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .contact-section {
        padding: 3rem 1rem;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
    }

    .contact-items {
        grid-template-columns: 1fr; /* 移动端改为单列 */
    }
}

/* 暗黑模式样式 */
@media (prefers-color-scheme: dark) {
    .contact-section h2,
    .contact-card h3 {
        color: white;
    }
}

/* 明亮主题样式 */
body.light-theme .contact-card h3 {
    color: #333;
}

/* 暗黑主题样式 */
body:not(.light-theme) .contact-card h3 {
    color: white;
}

/* 为不同平台设置特定样式 */
.contact-item.telegram:hover {
    border-color: #0088cc;
    color: #0088cc;
}

.contact-item.discord:hover {
    border-color: #5865F2;
    color: #5865F2;
}

.contact-item.email:hover {
    border-color: #ea4335;
    color: #ea4335;
}

.contact-item.github:hover {
    border-color: #333;
    color: #333;
}

/* 合作伙伴区块 */
.partners-section {
    position: relative;
    padding: 60px 0;
    overflow: hidden;
}

.partners-container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    z-index: 1;
}

.partners-container h2 {
    text-align: center;
    margin-bottom: 40px;
    color: var(--text-color-dark);
}

.partner-category {
    margin-bottom: 40px;
}

.partner-category h3 {
    margin-bottom: 20px;
    color: var(--text-color-dark);
}

.partner-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* PC端一行两个 */
    gap: 20px;
    max-width: 700px;
    margin: 0 auto;
    padding: 0 20px;
}

.partner-card {
    position: relative;
    background: white;
    border-radius: 8px;
    padding: 25px 15px;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    aspect-ratio: 16/9;
    display: flex;
    align-items: center;
    justify-content: center;
    will-change: transform;
}

.partner-card img {
    width: auto;
    height: 60%;
    object-fit: contain;
    margin: 0;
    transition: transform 0.3s ease;
}

.partner-name {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 10px;
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: linear-gradient(to top, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.7));
}

.partner-name h4 {
    margin: 0;
    color: #333 !important; /* 深灰色文字 */
    font-size: 0.9rem;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 暗黑模式适配 */
@media (prefers-color-scheme: dark) {
    .partner-name {
        background: linear-gradient(to top, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.05));
    }
    
    .partner-name h4 {
        color: #fff !important;
    }
}

/* 悬停效果 */
.partner-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.partner-card:hover .partner-name {
    transform: translateY(0);
}

.partner-card:hover .partner-name h4 {
    opacity: 1;
    transform: translateY(0);
}

.partner-card:hover img {
    transform: scale(0.95);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .partner-cards {
        grid-template-columns: 1fr; /* 移动端一行一个 */
        gap: 15px;
        padding: 0 15px;
        max-width: 240px; /* 控制移动端卡片宽度 */
    }

    .partner-card {
        padding: 20px 12px;
    }
}

.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
    background: linear-gradient(to bottom right, rgba(255, 255, 255, 0.01), rgba(255, 255, 255, 0.02));
}

.bubble {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(
        45deg,
        rgba(var(--bubble-color-1), 0.1),
        rgba(var(--bubble-color-2), 0.1)
    );
    backdrop-filter: blur(1px);
    animation: float var(--duration) ease-in-out infinite;
}

/* 设置泡泡的颜色变量 */
:root {
    --bubble-color-1: 100, 149, 237;  /* 矢车菊蓝 */
    --bubble-color-2: 135, 206, 235;  /* 天蓝色 */
}

/* 暗黑模式颜色 */
@media (prefers-color-scheme: dark) {
    :root {
        --bubble-color-1: 70, 130, 180;  /* 钢蓝色 */
        --bubble-color-2: 65, 105, 225;  /* 宝蓝色 */
    }
}

/* 设置不同泡泡的大小和动画 */
.bubble:nth-child(1) {
    --size: 120px;
    --duration: 20s;
    width: var(--size);
    height: var(--size);
    left: 10%;
    animation-delay: 0s;
}

.bubble:nth-child(2) {
    --size: 80px;
    --duration: 18s;
    width: var(--size);
    height: var(--size);
    left: 25%;
    animation-delay: -2s;
}

.bubble:nth-child(3) {
    --size: 100px;
    --duration: 22s;
    width: var(--size);
    height: var(--size);
    left: 40%;
    animation-delay: -4s;
}

.bubble:nth-child(4) {
    --size: 90px;
    --duration: 25s;
    width: var(--size);
    height: var(--size);
    left: 55%;
    animation-delay: -6s;
}

.bubble:nth-child(5) {
    --size: 130px;
    --duration: 21s;
    width: var(--size);
    height: var(--size);
    left: 70%;
    animation-delay: -8s;
}

.bubble:nth-child(6) {
    --size: 110px;
    --duration: 19s;
    width: var(--size);
    height: var(--size);
    left: 85%;
    animation-delay: -10s;
}

.bubble:nth-child(7) {
    --size: 95px;
    --duration: 23s;
    width: var(--size);
    height: var(--size);
    left: 15%;
    animation-delay: -12s;
}

.bubble:nth-child(8) {
    --size: 115px;
    --duration: 24s;
    width: var(--size);
    height: var(--size);
    left: 30%;
    animation-delay: -14s;
}

.bubble:nth-child(9) {
    --size: 85px;
    --duration: 20s;
    width: var(--size);
    height: var(--size);
    left: 45%;
    animation-delay: -16s;
}

.bubble:nth-child(10) {
    --size: 125px;
    --duration: 26s;
    width: var(--size);
    height: var(--size);
    left: 60%;
    animation-delay: -18s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(100vh) scale(1);
    }
    50% {
        transform: translateY(-10vh) scale(1.1);
    }
}

/* 移动端适配 */
@media (max-width: 768px) {
    .bubble {
        --size: calc(var(--size) * 0.7);  /* 移动端缩小泡泡尺寸 */
    }
}

.app-screenshots {
    position: relative;
    overflow: hidden;
}

.app-screenshots-container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
}

/* 滑动显示动画 */
.slide-fade-up {
    opacity: 0;
    transform: translateY(30px); /* 减小移动距离 */
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1); /* 使用更快的动画时间 */
}

.slide-fade-up.active {
    opacity: 1;
    transform: translateY(0);
}

/* 为不同元素设置不同的延迟 */
.slide-fade-up:nth-child(2) {
    transition-delay: 0.2s;
}
.slide-fade-up:nth-child(3) {
    transition-delay: 0.4s;
}
.slide-fade-up:nth-child(4) {
    transition-delay: 0.6s;
}

/* 优化动画性能 */
.partner-card,
.bg-icon,
.bubble,
.slide-fade-up {
    will-change: transform, opacity;
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* 优化过渡效果 */
.partner-card {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 优化背景动画 */
.bubble {
    animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* 优化滚动性能 */
.background-animation {
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* 减少重绘区域 */
.partner-name {
    transform: translateZ(0);
}

/* 在 CSS 样式中添加明亮主题下的 footer 样式 */
.light-theme footer {
    color: #333 !important; /* 使用深色文字 */
}

/* 友情链接卡片特殊样式 */
.partners-section:last-of-type .partner-cards {
    grid-template-columns: repeat(3, 1fr); /* 一行显示3个 */
    max-width: 800px; /* 控制最大宽度 */
    margin: 0 auto;
}

.partners-section:last-of-type .partner-card {
    aspect-ratio: unset; /* 移除正方形比例 */
    height: auto; /* 自适应高度 */
    padding: 15px 20px; /* 调整内边距 */
}

.partners-section:last-of-type .partner-name {
    position: static; /* 移除绝对定位 */
    transform: none;
    background: none;
    padding: 0;
}

.partners-section:last-of-type .partner-name h4 {
    margin: 0;
    color: var(--text-color-dark);
}

/* 适配移动端 */
@media (max-width: 768px) {
    .partners-section:last-of-type .partner-cards {
        grid-template-columns: repeat(2, 1fr); /* 移动端一行显示2个 */
    }
}

@media (max-width: 480px) {
    .partners-section:last-of-type .partner-cards {
        grid-template-columns: 1fr; /* 更小屏幕一行显示1个 */
    }
}

.friend-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.friend-link-card {
    color: var(--text-color-dark);
    text-decoration: none;
    padding: 15px 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.friend-link-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    background: rgba(255, 255, 255, 0.15);
}

.light-theme .friend-link-card {
    color: #333;
    background: rgba(255, 255, 255, 0.8);
}

.light-theme .friend-link-card:hover {
    background: rgba(255, 255, 255, 0.95);
}

/* 响应式适配 */
@media (max-width: 768px) {
    .friend-links {
        padding: 10px;
        gap: 15px;
    }
    
    .friend-link-card {
        padding: 12px 25px;
    }
}

/* 首屏关键样式 */
.main-content {
    content-visibility: auto;
    contain-intrinsic-size: 0 500px;
}

.lazy-section {
    content-visibility: auto;
    contain-intrinsic-size: 0 300px;
}