* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
a{
    text-decoration: none;
    color: #000;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: #000;
    color: #fff;
}

.activity{
    display: flex;
    width: 240px;
    height: 500px;
    position: fixed;
    bottom: 50px;
    right: 20px;
    z-index: 999;
    opacity: 1;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    visibility: visible;
    animation: slideInFromRight 1s ease-out;
}

@keyframes slideInFromRight {
    0% {
        transform: translateX(100%);
        opacity: 0;
    }
    100% {
        transform: translateX(0);
        opacity: 1;
    }
}

.activity.hidden {
    opacity: 0;
    visibility: hidden;
}

.activity-content{
    width: 100%;
    height: 100%;
    background: url('../images/activity/01.png') no-repeat center center;
    background-size: 100% 100%;
    position: relative;
    animation: fdsx 1.3s ease-in-out infinite;
}
@keyframes fdsx {
    0%{
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}


.activity-icon{
    width: 110px;
    height: 110px;
    position: absolute;
    top: 200px;
    left: -20px;
}
.activity-icon-dh ,.activity-icon-dh1,.activity-icon-dh2{
    width: 30px;
    height: 30px;
    position: absolute;
    top: 89px;
    right: 50px;
    transform: rotateY(-180deg);
    animation: dropDown 1.3s cubic-bezier(0.25, 0.46, 0.45, 0.94) infinite;
}
.activity-icon-dh1{
    width: 50px;
    height: 50px;
    top: 80px;
    left: 30px;
    transform: rotateY(-180deg);
    animation: dropDown 1.3s cubic-bezier(0.25, 0.46, 0.45, 0.94) infinite;
    animation-delay: 0.1s;
}
.activity-icon-dh2{
    width: 30px;
    height: 30px;
    top:100px;
    left: 110px;
    animation: dropDown 1.3s cubic-bezier(0.25, 0.46, 0.45, 0.94) infinite;
    animation-delay: 0.2s;
}

@keyframes dropDown {
    0% {
        transform: translateY(0) scale(0.8) rotate(0deg);
        opacity: 0.8;
    }
    70% {
        transform: translateY(320px) scale(1.2) rotate(180deg);
        opacity: 1;
    }
    75% {
        transform: translateY(310px) scale(1) rotate(270deg);
        opacity: 0.8;
    }
    85% {
        transform: translateY(335px) scale(0.9) rotate(315deg);
        opacity: 0.5;
    }
    90% {
        transform: translateY(320px) scale(0.8) rotate(340deg);
        opacity: 0.3;
    }
    100% {
        transform: translateY(350px) scale(0.7) rotate(360deg);
        opacity: 0;
    }
}
.activity-content-button{
    width: 220px;
    height: 40px;
    background: #FF6B22;
    position: absolute;
    left: 50%;
    bottom: 27px;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 25px;
    animation: buttonBounce 1.3s cubic-bezier(1, 1, 1, 1) infinite;
    cursor: pointer;
    font-weight: bold;
    font-size: 25px;
    line-height: 40px;
}
@keyframes buttonBounce {
    0%, 65% {
        transform: translateX(-50%) translateY(0);
    }
    75% {
        transform: translateX(-50%) translateY(15px);
    }
    85% {
        transform: translateX(-50%) translateY(-10px);
    }
    90% {
        transform: translateX(-50%) translateY(5px);
    }
    95% {
        transform: translateX(-50%) translateY(-2px);
    }
    100% {
        transform: translateX(-50%) translateY(0);
    }
}
.activity-gb{
    width: 30px;
    height: 30px;
    position: absolute;
    right: 0px;
    top: 95px;
    cursor: pointer;
}





.header {
    padding: 20px;
    position: fixed;
    width: 100%;
    z-index: 100;
    display: flex;
    align-items: center;
    background: linear-gradient(to bottom, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
}
.header div{
    flex: 1;
}
.logo {
    width: 35px;
    height: 35px;
    object-fit: contain;
    margin-right: 15px;
}

.header h3 {
    margin-right: auto;
}

.header > div:last-child {
    margin-left: auto;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 20px;
    position: relative;
    overflow: hidden;
}

/* 修改 hero::before 的样式 */
.hero::before {
    content: '';
    position: absolute;
    top: -5%;
    left: -5%;
    right: -5%;
    bottom: -5%;
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.5)), url('../images/bg.png');
    background-size: 130% auto;
    background-position: center;
    transform: perspective(1000px) rotateX(5deg) scale(1.15);
    transform-origin: center center;
    animation: heroBackground 20s linear infinite alternate;
    z-index: -1;
}

/* 添加暗色渐变遮罩 */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        to bottom,
        rgba(0,0,0,0.8) 0%,
        rgba(0,0,0,0.5) 50%,
        rgba(0,0,0,0.8) 100%
    );
    z-index: -1;
}

/* 优化背景动画效果 */
@keyframes heroBackground {
    0% {
        background-position: 0% 50%;
        transform: perspective(1000px) rotateX(5deg) scale(1.15);
    }
    100% {
        background-position: 100% 50%;
        transform: perspective(1000px) rotateX(5deg) scale(1.18); /* 减小动画时的最大缩放 */
    }
}

/* 确保内容在背景之上 */
.hero-content {
    max-width: 900px;
    position: relative;
    z-index: 1;
}

h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.tagline {
    font-size: 1.2rem;
    margin-bottom: 40px;
    color: #ccc;
}

.tags {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tag {
    padding: 5px 15px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 20px;
    font-size: 0.9rem;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.download-button {
    background: #fff;
    padding: 10px 10px;
    border-radius: 8px;
    transition: all 0.3s ease;
    width: 200px;
    border: none;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.download-button:hover {
    transform: scale(1.05);
    background: #f8f8f8;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

.download-button img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.download-button .text-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    color: #000;
}

.download-button .text-content span:first-child {
    font-size: 12px;
    font-weight: bold;
    color: rgba(0, 0, 0, 0.7);
}

.download-button .text-content span:last-child {
    font-size: 20px;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: #000;
}

/* 移动端优化 */
@media (max-width: 768px) {
    .hero {
        height: 100vh;
        min-height: 100vh;
        padding: 20px;
    }

    .hero-content {
        transform: translateY(-10vh); /* 整体向上移动10vh的距离 */
    }

    h1 {
        font-size: 2.5rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero::before {
        top: -3%;
        left: -3%;
        right: -3%;
        bottom: -3%;
        background-size: 140% auto; /* 适当调整移动端背景尺寸 */
        transform: perspective(1000px) rotateX(3deg) scale(1.1);
    }

    /* 确保所有其他section在移动端都能平滑滚动 */
    .content-section,
    .free-section,
    .about-section,
    .footer {
        min-height: auto;
        height: auto;
        padding-top: 80px; /* 其他部分保持顶部内边距 */
    }
}

@media (max-width: 480px) {
    .activity{
        right: -25px;
        bottom: -40px;
        transform: scale(0.65);
        animation: none;
        animation: slideInFromRight2 .5s ease-out;

    }
    @keyframes slideInFromRight2 {
        0% {
            transform: translateX(100%) scale(0.65);
            opacity: 0;
        }
        100% {
            transform: translateX(0) scale(0.65);
            opacity: 1;
        }
    }
    h1 {
        font-size: 2rem;
    }

    .tags {
        gap: 10px;
    }

    .tag {
        font-size: 0.8rem;
    }

    .hero::before {
        background-size: 180% auto;
        transform: perspective(1000px) rotateX(3deg) scale(1.1);
    }

    .header {
        padding: 15px;
        display: grid;
        grid-template-columns: auto 1fr auto;
        align-items: center;
        gap: 10px;
    }

    .logo {
        width: 32px !important;
        height: 32px !important;
        object-fit: contain;
    }

    .header h3 {
        text-align: center;
        margin: 0;
    }

    .language-switch {
        margin-left: 0;
    }

    .header > div:last-child {
        width: 32px;
    }

    .feature-item {
        display: flex !important;
        flex-direction: column !important;
        align-items: center !important;
        text-align: center !important;
        padding: 20px;
        margin-bottom: 15px;
        background: rgba(255,255,255,0.05);
    }

    .feature-icon {
        width: 60px;
        height: 60px;
        margin: 0 0 15px 0;
        font-size: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .feature-item > div:last-child {
        flex: 1;
        margin-left: 0;
        text-align: center;
    }

    .feature-item h3 {
        font-size: 1.1rem;
        margin: 0 0 8px 0;
    }

    .feature-item p {
        font-size: 0.9rem;
        margin: 0;
        color: #999;
    }

    /* 通用触摸反馈样式 */
    a, button, .lang-btn, .nav-dot, .feature-item, .download-button, .social-link, .lang-option {
        -webkit-tap-highlight-color: transparent;  /* 移除默认的触摸高亮 */
        border-radius: 8px;  /* 统一圆角 */
        transition: all 0.3s ease;
    }

    /* 触摸状态样式 */
    a:active, button:active, .lang-btn:active, 
    .feature-item:active, .download-button:active, 
    .social-link:active, .lang-option:active {
        transform: scale(0.95);
        border-radius: 8px;
        background-color: rgba(255, 140, 0, 0.15);  /* 暗橙色触摸效果 */
    }

    /* 语言切换按钮特殊样式 */
    .lang-btn {
        padding: 6px 8px;
        font-size: 16px;
        background: rgba(255, 140, 0, 0.2);
        border-radius: 8px;
    }

    .lang-btn:active {
        background: rgba(255, 140, 0, 0.3);
        transform: scale(0.95);
    }

    /* 语言选项触摸效果 */
    .lang-option {
        border-radius: 8px;
        overflow: hidden;
    }

    .lang-option:active {
        background: rgba(255, 140, 0, 0.2);
        transform: scale(0.98);
    }

    /* 下载按钮触摸效果 */
    .download-button {
        border-radius: 12px;
        overflow: hidden;
    }

    .download-button:active {
        transform: scale(0.95);
        background: rgba(255, 255, 255, 0.9);
    }

    /* 特性项触摸效果 */
    .feature-item {
        border-radius: 16px;
    }

    .feature-item:active {
        transform: scale(0.98);
        background: rgba(255, 140, 0, 0.1);
    }

    /* 社交链接触摸效果 */
    .social-link {
        border-radius: 50%;
    }

    .social-link:active {
        transform: scale(0.9);
        background: rgba(255, 140, 0, 0.2);
    }
}

/* 添加全屏滚动相关样式 */
html {
    scroll-snap-type: y mandatory;
    scroll-behavior: smooth;
}

section, footer {
    scroll-snap-align: start;
    scroll-snap-stop: always;
}

@media (max-width: 768px) {
    html {
        scroll-snap-type: none;
    }
    
    section, footer {
        scroll-snap-align: none;
        scroll-snap-stop: none;
    }
}

/* 第二屏样式 */
.content-section {
    min-height: 100vh;
    background-color: #000;
    display: flex;
    align-items: center;
    padding: 40px;
    position: relative;
    overflow: hidden;
}

/* 优化第二屏背景花纹 */
.content-section::before,
.content-section::after {
    content: '';
    position: absolute;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, 
        rgba(255,255,255,0.1) 0%,
        rgba(255,255,255,0.05) 30%,
        transparent 70%
    );
    border-radius: 50%;
    z-index: 0;
    filter: blur(20px);
    opacity: 0.8;
}

.content-section::before {
    top: -200px;
    left: -200px;
    animation: rotateGradient 25s linear infinite;
    background: radial-gradient(circle, 
        rgba(128,0,255,0.1) 0%,
        rgba(128,0,255,0.05) 30%,
        transparent 70%
    );
}

.content-section::after {
    bottom: -200px;
    right: -200px;
    animation: rotateGradient 30s linear infinite reverse;
    background: radial-gradient(circle, 
        rgba(0,128,255,0.1) 0%,
        rgba(0,128,255,0.05) 30%,
        transparent 70%
    );
}

.content-container {
    display: flex;
    gap: 60px;
    max-width: 1200px;
    margin: 0 auto;
    align-items: center;
    position: relative;
    z-index: 1;
}

/* 确保其他元素在背景之上 */
.phone-mockup,
.content-text {
    position: relative;
    z-index: 2;
}

.phone-mockup {
    flex: 1;
    position: relative;
}

.phone-frame {
    width: 700px;
    height: 700px;
    position: relative;
    object-fit: cover;
    border-radius: 24px;
}

.floating-circle {
    position: absolute;
    width: 400px;
    height: 400px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 50%;
    z-index: -1;
}

.circle-1 {
    top: -50px;
    left: -50px;
}

.circle-2 {
    bottom: -50px;
    right: -50px;
}

.content-text {
    flex: 1;
}

.content-text h2 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.content-text p {
    font-size: 1.1rem;
    color: #999;
    line-height: 1.6;
    margin-bottom: 30px;
}

@media (max-width: 968px) {
    .hero-content {
        padding: 0 20px;
    }

    h1 {
        font-size: 2.2rem;
    }

    .content-container, .free-container {
        flex-direction: column;
        text-align: center;
        padding: 20px;
        gap: 40px;
    }

    .phone-mockup {
        order: -1;
        transform: scale(0.9);
    }

    .phone-frame {
        width: 280px;
        height: 100px;
        margin: 0 auto;
    }

    .floating-circle {
        width: 300px;
        height: 300px;
    }

    .content-text h2 {
        font-size: 2rem;
        margin-bottom: 15px;
    }

    .content-text p {
        font-size: 1rem;
        margin-bottom: 20px;
    }

    .feature-item {
        flex-direction: row;
        text-align: left;
        padding: 12px;
        margin-bottom: 15px;
    }

    .feature-icon {
        width: 36px;
        height: 36px;
        flex-shrink: 0;
    }

    .feature-item:hover {
        transform: translateX(5px);
    }

    .background-glow {
        width: 400px;
        height: 400px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 15px;
    }

    .logo {
        width: 45px !important;
        height: 45px !important;
        margin-right: auto;
    }
    h3 {
        margin: 0 auto;
        flex: 1;
        text-align: center;
    }
    h1 {
        font-size: 1.8rem;
    }

    .tagline {
        font-size: 0.9rem;
        margin-bottom: 30px;
    }

    .tags {
        gap: 8px;
        margin-bottom: 30px;
    }

    .tag {
        padding: 4px 12px;
        font-size: 0.8rem;
    }

    .download-buttons {
        gap: 15px;
    }

    .download-button {
        padding: 6px 16px;
        width: 180px;
        background: #fff;
    }

    .download-button img {
        width: 24px;
        height: 24px;
    }

    .download-button .text-content span:first-child {
        font-size: 10px;
        color: rgba(0, 0, 0, 0.7);
    }

    .download-button .text-content span:last-child {
        font-size: 16px;
        color: #000;
    }

    .phone-mockup {
        transform: scale(0.8);
    }

    .content-text h2 {
        font-size: 1.8rem;
    }

    .feature-item {
        display: flex !important;
        flex-direction: column !important;
        align-items: center !important;
        text-align: center !important;
        padding: 20px;
        margin-bottom: 15px;
        background: rgba(255,255,255,0.05);
    }

    .feature-icon {
        width: 60px;
        height: 60px;
        margin: 0 0 15px 0;
        font-size: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .feature-item > div:last-child {
        flex: 1;
        margin-left: 0;
        text-align: center;
    }

    .feature-item h3 {
        font-size: 1.1rem;
        margin: 0 0 8px 0;
    }

    .feature-item p {
        font-size: 0.9rem;
        margin: 0;
        color: #999;
    }

    .background-glow {
        width: 300px;
        height: 300px;
    }
}

/* 添加动画相关样式 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes rotateCircle {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
}

.animate-on-scroll.visible {
    animation: fadeInUp 0.8s ease forwards;
}

.floating-phone {
    animation: floatAnimation 6s ease-in-out infinite;
}

.floating-circle {
    animation: rotateCircle 20s linear infinite;
}

/* 第三屏样式 */
.free-section {
    min-height: 100vh;
    background-color: #000;
    display: flex;
    align-items: center;
    padding: 40px;
    position: relative;
    overflow: hidden;
}

.free-container {
    display: flex;
    flex-direction: row-reverse;
    gap: 60px;
    max-width: 1200px;
    margin: 0 auto;
    align-items: center;
    position: relative;
    z-index: 2;
}

/* 优化第三屏背景光晕 */
.background-glow {
    position: absolute;
    width: 800px;
    height: 800px;
    border-radius: 50%;
    filter: blur(50px);
    opacity: 0.4;
    animation: glowPulse 4s ease-in-out infinite;
    z-index: 1;
}

.glow-1 {
    top: -200px;
    right: -200px;
    background: radial-gradient(circle, 
        rgba(255,0,128,0.2) 0%,
        rgba(255,0,128,0.1) 30%,
        transparent 70%
    );
    animation: glowPulse 4s ease-in-out infinite, rotateGradient 30s linear infinite;
}

.glow-2 {
    bottom: -200px;
    left: -200px;
    background: radial-gradient(circle, 
        rgba(0,255,128,0.2) 0%,
        rgba(0,255,128,0.1) 30%,
        transparent 70%
    );
    animation: glowPulse 4s ease-in-out infinite reverse, rotateGradient 30s linear infinite reverse;
}

/* 添加额外的装饰元素 */
.content-section::before {
    box-shadow: 
        0 0 100px rgba(128,0,255,0.2),
        inset 0 0 60px rgba(128,0,255,0.1);
}

.content-section::after {
    box-shadow: 
        0 0 100px rgba(0,128,255,0.2),
        inset 0 0 60px rgba(0,128,255,0.1);
}

/* 优化动画效果 */
@keyframes rotateGradient {
    0% {
        transform: rotate(0deg) scale(1);
    }
    50% {
        transform: rotate(180deg) scale(1.1);
    }
    100% {
        transform: rotate(360deg) scale(1);
    }
}

@keyframes glowPulse {
    0%, 100% {
        opacity: 0.2;
        transform: scale(1);
    }
    50% {
        opacity: 0.4;
        transform: scale(1.1);
    }
}

/* 移动端优化 */
@media (max-width: 768px) {
    .content-section::before,
    .content-section::after,
    .background-glow {
        width: 500px;
        height: 500px;
        opacity: 0.3;
    }

    .glow-1, .glow-2 {
        filter: blur(30px);
    }
}

/* 添加交互效果 */
.content-section:hover::before,
.content-section:hover::after {
    animation-duration: 20s;
    opacity: 1;
}

.free-section:hover .background-glow {
    animation-duration: 3s;
    opacity: 0.6;
}

/* 添加导航指示器样式 */
.nav-dots {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 100;
}

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

.nav-dot.active {
    background: #fff;
    transform: scale(1.2);
}

@media (max-width: 768px) {
    .nav-dots {
        display: none; /* 在移动端隐藏导航点 */
    }

    /* 移除移动端的滚动捕捉效果 */
    html {
        scroll-snap-type: none;
    }

    section, footer {
        scroll-snap-align: none;
        scroll-snap-stop: none;
    }

    /* 确保所有section在移动端都能平滑滚动 */
    .hero,
    .content-section,
    .free-section,
    .about-section,
    .footer {
        padding-top: 80px; /* 统一顶部内边距，避免与导航栏重叠 */
        min-height: auto;
        scroll-snap-align: none;
        scroll-snap-stop: none;
    }

    /* 移除第四屏的滚动效果 */
    .about-section .about-text {
        font-size: 14px;
        line-height: 1.6;
        padding: 20px;
        max-height: none; /* 移除高度限制 */
        overflow-y: visible; /* 移除滚动 */
        -webkit-overflow-scrolling: auto;
    }

    .about-section {
        height: auto; /* 自适应高度 */
    }

    .about-container {
        padding: 20px;
    }

    .about-text p {
        margin-bottom: 15px;
    }

    /* 优化其他屏幕的内容间距 */
    .hero-content,
    .content-container,
    .free-container {
        padding: 0 20px;
    }

    /* 调整footer在移动端的样式 */
    .footer {
        min-height: auto;
        padding: 80px 20px 40px 20px;
    }
}

/* 保持桌面端的滚动效果 */
@media (min-width: 769px) {
    html {
        scroll-snap-type: y mandatory;
    }
    
    section, footer {
        scroll-snap-align: start;
        scroll-snap-stop: always;
    }
}

/* 修改第四屏样式 */
.about-section {
    min-height: 100vh;
    background-color: #000;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.about-container {
    flex: 1;
    display: flex;
    align-items: center;
    padding: 60px 40px;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.about-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.about-text {
    opacity: 1;
    transform: none;
}

.about-text h2 {
    font-size: 3rem;
    margin-bottom: 40px;
    background: linear-gradient(45deg, #fff, #7c7c7c);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
    opacity: 0;
    transform: translateY(30px);
}

.about-text p {
    font-size: 1.2rem;
    line-height: 1.8;
    color: #999;
    margin-bottom: 30px;
    opacity: 0;
    transform: translateY(20px);
}

.about-text.visible h2 {
    animation: fadeInUp 0.8s ease forwards;
}

.about-text.visible p {
    animation: fadeInUp 0.8s ease forwards;
}

.about-text.visible p:nth-child(2) {
    animation-delay: 0.2s;
}

.about-text.visible p:nth-child(3) {
    animation-delay: 0.4s;
}

.about-section::before,
.about-section::after {
    content: '';
    position: absolute;
    background: radial-gradient(circle, rgba(255,255,255,0.03) 0%, transparent 70%);
    border-radius: 50%;
    animation: rotateGradient 30s linear infinite;
}

.about-section::before {
    width: 800px;
    height: 800px;
    top: -400px;
    right: -400px;
}

.about-section::after {
    width: 600px;
    height: 600px;
    bottom: -300px;
    left: -300px;
    animation-direction: reverse;
}

@keyframes rotateGradient {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* 响应式调整 */
@media (max-width: 968px) {
    .about-container {
        padding: 40px 20px;
    }

    .about-text h2 {
        font-size: 2.4rem;
        margin-bottom: 30px;
    }

    .about-text p {
        font-size: 1.1rem;
        line-height: 1.6;
    }
}

@media (max-width: 480px) {
    .about-container {
        padding: 30px 20px;
    }

    .about-text h2 {
        font-size: 2rem;
        margin-bottom: 25px;
    }

    .about-text p {
        font-size: 1rem;
        line-height: 1.5;
    }

    .about-section {
        padding-top: 100px;
    }
}

/* 修改footer的滚动行为 */
.footer {
    min-height: 100vh;
    padding: 40px;
    background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    text-align: center;
    scroll-snap-align: start;
    scroll-snap-stop: always;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h4 {
    color: #fff;
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 10px;
}

.footer-column a {
    color: #999;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: #fff;
}

.footer-bottom {
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #666;
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-3px);
}

/* 在移动端调整 free-section 的样式 */
@media (max-width: 480px) {
    .free-section .phone-mockup {
        display: none; /* 仅隐藏第三屏的图片 */
    }

    .free-container {
        flex-direction: column;
        text-align: center;
        padding: 20px;
    }

    .content-text {
        padding: 0 10px;
    }

    .content-text h2 {
        font-size: 1.6rem;
        margin-bottom: 15px;
    }

    .content-text p {
        font-size: 0.9rem;
        margin-bottom: 15px;
    }

    .feature-item {
        flex-direction: column;
        text-align: center;
        padding: 10px;
        margin-bottom: 10px;
    }

    .feature-item h3 {
        font-size: 0.9rem;
    }

    .feature-item p {
        font-size: 0.8rem;
    }
}

/* 添加新的动画关键帧 */
@keyframes glowPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

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

@keyframes slideInFromRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInFromLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 优化第一屏动画 */
.hero-content h1 {
    animation: slideInFromLeft 1s ease-out forwards;
}

.hero-content .tags {
    animation: fadeInUp 1s ease-out 0.3s forwards;
    opacity: 0;
}

.hero-content .tagline {
    animation: fadeInUp 1s ease-out 0.6s forwards;
    opacity: 0;
}

.hero-content .download-buttons {
    animation: fadeInUp 1s ease-out 0.9s forwards;
    opacity: 0;
}

/* 优化第二屏动画 */
.content-section .phone-mockup {
    animation: scaleBreathing 6s ease-in-out infinite;
}

.floating-circle {
    animation: rotateCircle 20s linear infinite, glowPulse 4s ease-in-out infinite;
}

/* 优化第三屏动画 */
.feature-item {
    transform: translateX(-20px);
    opacity: 0;
    border-radius: 16px;
}

.feature-item.visible {
    animation: slideInFromRight 0.8s ease forwards;
}

.feature-item:nth-child(2).visible {
    animation-delay: 0.2s;
}

.feature-item:nth-child(3).visible {
    animation-delay: 0.4s;
}

/* 优化布局响应式 */
@media (max-width: 968px) {
    .content-container, .free-container {
        padding: 40px 20px;
    }

    .phone-mockup {
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
    }

    .phone-frame {
        width: 100%;
        height: auto;
    }

    .feature-list {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
        padding: 0 15px;
    }

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

    .about-text p {
        padding: 0 15px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }
}

/* 优化导航点动画 */
.nav-dot {
    position: relative;
    border-radius: 50%;
}

.nav-dot::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: #fff;
    border-radius: 50%;
    opacity: 0.3;
    transform: scale(0);
    transition: transform 0.3s ease;
}

.nav-dot:hover::after {
    transform: scale(2);
}

.nav-dot.active::after {
    transform: scale(1.5);
}

/* 添加通用圆角类 */
.rounded {
    border-radius: 8px;
}

/* 为标签添加圆角 */
.tag {
    border-radius: 20px;
    padding: 6px 16px;
}

/* 为下载按钮添加圆角 */
.download-button {
    border-radius: 12px;
    overflow: hidden;
}

/* 为浮动圆圈添加圆角 */
.floating-circle {
    border-radius: 50%;
}

/* 为手机预览图添加圆角 */
.phone-frame {
    border-radius: 24px;
}

/* 为特性项添加圆角 */
.feature-item {
    border-radius: 16px;
}

/* 为导航点添加圆角 */
.nav-dot {
    border-radius: 50%;
}

/* 修改移动端的样式，确保第四屏不会出现滚动 */
@media (max-width: 768px) {
    .about-section {
        padding-top: 80px;
        height: auto;
        min-height: auto;
    }

    .about-section .about-text {
        font-size: 14px;
        line-height: 1.6;
        padding: 20px;
        height: auto;
        overflow: visible;
    }

    .about-container {
        padding: 20px;
    }

    .about-text p {
        margin-bottom: 15px;
        font-size: 14px;
    }
}

/* 语言切换按钮样式 */
.language-switch {
    margin-left: auto;
    display: flex;
    justify-content: flex-end;
    width: auto;
}

.lang-btn {
    background: rgba(255, 140, 0, 0.2);
    border: 1px solid rgba(255, 140, 0, 0.3);
    border-radius: 8px;
    color: #fff;
    padding: 8px 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
}

.lang-btn:hover {
    background: rgba(255, 140, 0, 0.3);
    transform: translateY(-2px);
    border-color: rgba(255, 140, 0, 0.5);
}

.current-lang {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 语言选择弹窗样式 */
.lang-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lang-modal.show {
    display: flex;
    opacity: 1;
}

.lang-modal-content {
    position: absolute;
    top: 70px;
    right: 20px;
    background: rgba(28, 28, 28, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 8px;
    min-width: 160px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transform: translateY(-10px);
    opacity: 0;
    animation: modalShow 0.3s ease forwards;
}

.lang-option {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.lang-option:hover {
    background: rgba(255, 255, 255, 0.1);
}

.lang-flag {
    font-size: 20px;
    margin-right: 12px;
}

.lang-name {
    color: #fff;
    font-size: 14px;
}

@keyframes modalShow {
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* 移动端适配 */
@media (max-width: 480px) {
    .lang-btn {
        padding: 6px 8px;
        font-size: 16px;
        background: rgba(255, 140, 0, 0.2);
    }

    .lang-modal-content {
        right: 10px;
        min-width: 140px;
    }

    .lang-option {
        padding: 10px 12px;
    }

    .lang-flag {
        font-size: 18px;
        margin-right: 10px;
    }

    .lang-name {
        font-size: 13px;
    }
}

/* FAQ弹窗样式 */
.faq-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.faq-modal.show {
    display: flex;
    opacity: 1;
    align-items: center;
    justify-content: center;
}

.faq-modal-content {
    background: rgba(28, 28, 28, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    position: relative;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    animation: modalShow 0.3s ease forwards;
}

.faq-modal-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.faq-modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
    color: #fff;
}

.close-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #fff;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: all 0.3s ease;
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.faq-modal-body {
    padding: 20px;
    overflow-y: auto;
    max-height: calc(80vh - 77px);
}

.faq-item {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
}

.faq-item h3 {
    margin: 0 0 12px 0;
    font-size: 1.1rem;
    color: #fff;
}

.faq-item p {
    margin: 0;
    color: #ccc;
    line-height: 1.6;
}

@keyframes modalShow {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* 移动端样式 */
@media (max-width: 480px) {
    .faq-modal-content {
        width: 100%;
        height: 100vh;
        max-height: 100vh;
        border-radius: 0;
        margin: 0;
    }

    .faq-modal.show {
        align-items: flex-start;
    }

    .faq-modal-header {
        padding: 16px;
        position: sticky;
        top: 0;
        background: rgba(28, 28, 28, 0.98);
        z-index: 2;
    }

    .faq-modal-header h2 {
        font-size: 1.2rem;
        text-align: center;
        flex: 1;
        margin-right: 36px;
    }

    .close-btn {
        position: absolute;
        right: 16px;
        top: 50%;
        transform: translateY(-50%);
    }

    .faq-modal-body {
        padding: 16px;
        height: calc(100vh - 69px);
        max-height: none;
    }

    .faq-item {
        padding: 16px;
        margin-bottom: 12px;
    }

    .faq-item:last-child {
        margin-bottom: 32px;
    }

    /* 优化滚动条样式 */
    .faq-modal-body::-webkit-scrollbar {
        width: 4px;
    }

    .faq-modal-body::-webkit-scrollbar-track {
        background: rgba(255, 255, 255, 0.05);
    }

    .faq-modal-body::-webkit-scrollbar-thumb {
        background: rgba(255, 255, 255, 0.2);
        border-radius: 2px;
    }

    /* 触摸反馈效果 */
    .close-btn:active {
        background: rgba(255, 255, 255, 0.2);
        transform: translateY(-50%) scale(0.92);
    }

    .faq-item:active {
        background: rgba(255, 255, 255, 0.08);
        transform: scale(0.98);
    }
}