/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
    width: 100%;
    max-width: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
    width: 100%;
    max-width: 100%;
    position: relative;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    max-width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    overflow-x: hidden;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    width: 100%;
    max-width: 100%;
}

.nav-logo h2 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 28px;
    font-weight: 800;
}

.nav-menu-desktop {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-menu-mobile {
    display: none;
}

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

.nav-link:hover {
    color: #667eea;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 语言切换按钮样式 */
.language-switcher {
    margin-left: 15px;
    display: flex;
    align-items: center;
}

.lang-toggle {
    position: relative;
    display: flex;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 20px;
    padding: 3px;
    width: 70px;
    height: 32px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    backdrop-filter: blur(10px);
}

.lang-toggle:hover {
    background: rgba(102, 126, 234, 0.15);
    border-color: rgba(102, 126, 234, 0.3);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.lang-option {
    position: relative;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    transition: all 0.3s ease;
    border-radius: 20px;
}

.lang-text {
    font-size: 12px;
    font-weight: 600;
    color: #666;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.lang-option.active .lang-text {
    color: #fff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.lang-slider {
    position: absolute;
    top: 3px;
    left: 3px;
    width: calc(50% - 3px);
    height: calc(100% - 6px);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 16px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 
        0 2px 8px rgba(102, 126, 234, 0.3),
        0 1px 3px rgba(0, 0, 0, 0.1);
    z-index: 1;
    transform: translateX(100%); /* 默认在英文位置 */
}

.lang-toggle.zh .lang-slider {
    transform: translateX(0);
}

/* 移动端语言切换按钮样式 */
.language-switcher.mobile {
    margin: 15px 0;
    display: flex;
    justify-content: center;
}

.language-switcher.mobile .lang-toggle {
    width: 120px;
    height: 40px;
    padding: 5px;
}

.language-switcher.mobile .lang-text {
    font-size: 14px;
}

.language-switcher.mobile .lang-slider {
    border-radius: 20px;
}

/* 英雄区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 0 60px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    z-index: -2;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(102, 126, 234, 0.8) 0%, rgba(118, 75, 162, 0.8) 100%);
    z-index: -1;
}

.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 100px;
    height: 100px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.shape-3 {
    width: 80px;
    height: 80px;
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding-top: 70px;
}

.hero-text {
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.gradient-text {
    background: linear-gradient(45deg, #fff 0%, #f0f8ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn {
    padding: 15px 30px;
    border: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    color: white;
    box-shadow: 0 10px 30px rgba(255, 107, 107, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(255, 107, 107, 0.6);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* 手机模型 */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    position: relative;
    animation: phoneFloat 3s ease-in-out infinite;
}

@keyframes phoneFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.phone-frame {
    width: 280px;
    height: 560px;
    background: #1a1a1a;
    border-radius: 40px;
    padding: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    position: relative;
}

.phone-frame::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 6px;
    background: #333;
    border-radius: 3px;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #000;
    border-radius: 25px;
    overflow: hidden;
}

.app-interface {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    flex-direction: column;
}

.app-header {
    padding: 20px;
    text-align: center;
}

.status-bar {
    height: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    margin-bottom: 10px;
}

.app-title {
    color: white;
    font-size: 18px;
    font-weight: 600;
}

.app-content {
    flex: 1;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.balance-card {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    backdrop-filter: blur(10px);
}

.balance-text {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    margin-bottom: 5px;
}

.balance-amount {
    color: white;
    font-size: 28px;
    font-weight: 700;
}

.quick-actions {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.action-item {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 15px;
    text-align: center;
    color: white;
    backdrop-filter: blur(10px);
}

.action-item i {
    font-size: 24px;
    margin-bottom: 8px;
    display: block;
}

.action-item span {
    font-size: 12px;
}

/* 功能特色区域 */
.features {
    padding: 100px 0;
    background: #f8fafc;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #666;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(102, 126, 234, 0.1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(102, 126, 234, 0.2);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 32px;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* 平台优势区域 */
.advantages {
    padding: 100px 0;
    background: white;
}

.advantages-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.advantage-item {
    display: flex;
    align-items: center;
    gap: 30px;
    padding: 30px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    transition: all 0.3s ease;
}

.advantage-item:hover {
    transform: translateX(10px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.1);
}

.advantage-item:nth-child(even) {
    flex-direction: row-reverse;
}

.advantage-item:nth-child(even):hover {
    transform: translateX(-10px);
}

.advantage-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 40px;
    flex-shrink: 0;
}

.advantage-text h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.advantage-text p {
    color: #666;
    font-size: 1.1rem;
    line-height: 1.6;
}

/* 下载区域 */
.download {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.download-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.download-text p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.download-buttons {
    display: flex;
    gap: 20px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 25px;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.download-btn i {
    font-size: 32px;
}

.btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.btn-text span {
    font-size: 12px;
    opacity: 0.8;
}

.btn-text strong {
    font-size: 16px;
    font-weight: 600;
}

/* 设备展示 */
.devices {
    display: flex;
    gap: 30px;
    justify-content: center;
    align-items: center;
}

.device {
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.phone {
    width: 200px;
    height: 400px;
    background: #1a1a1a;
    transform: rotate(-5deg);
}

.tablet {
    width: 280px;
    height: 200px;
    background: #1a1a1a;
    transform: rotate(5deg);
}

.device-frame {
    width: 100%;
    height: 100%;
    padding: 15px;
}

.device-screen {
    width: 100%;
    height: 100%;
    background: #000;
    border-radius: 10px;
    overflow: hidden;
}

.app-preview {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.preview-header {
    color: white;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    text-align: center;
}

.preview-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-card {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    color: white;
    backdrop-filter: blur(10px);
}

.preview-card i {
    font-size: 24px;
    margin-bottom: 10px;
    display: block;
}

.preview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    flex: 1;
}

.grid-item {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    padding: 15px;
    text-align: center;
    color: white;
    font-size: 12px;
    backdrop-filter: blur(10px);
}

/* 联系我们区域 */
.contact {
    padding: 100px 0;
    background: #f8fafc;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 25px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
}

.contact-text h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 5px;
    color: #333;
}

.contact-text p {
    color: #666;
}

/* 联系动画 */
.contact-animation {
    background: white;
    padding: 60px 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.animation-container {
    position: relative;
    width: 300px;
    height: 300px;
}

.center-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 40px;
    z-index: 10;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    border: 2px solid rgba(102, 126, 234, 0.2);
    border-radius: 50%;
    animation: rotate 20s linear infinite;
}

.orbit-2 {
    width: 280px;
    height: 280px;
    border: 2px solid rgba(102, 126, 234, 0.1);
    animation: rotate 30s linear infinite reverse;
}

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

.floating-card {
    position: absolute;
    width: 120px;
    height: 100px;
    background: white;
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 2px solid rgba(102, 126, 234, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    padding: 8px;
}

.floating-card:hover {
    transform: scale(1.1);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.2);
    border-color: #667eea;
}

.floating-card p {
    font-size: 0.8rem;
    color: #333;
    margin-top: 8px;
    font-weight: 600;
    text-align: center;
    line-height: 1.2;
    word-wrap: break-word;
    hyphens: auto;
}

.card-icon {
    font-size: 32px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-1 {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    animation: float1 3s ease-in-out infinite;
}

.card-2 {
    bottom: 0;
    left: 0;
    animation: float2 3s ease-in-out infinite;
}

.card-3 {
    bottom: 0;
    right: 0;
    animation: float3 3s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translateX(-50%) translateY(0px); }
    50% { transform: translateX(-50%) translateY(-15px); }
}

@keyframes float2 {
    0%, 100% { transform: translateX(0px) translateY(0px); }
    50% { transform: translateX(-15px) translateY(-15px); }
}

@keyframes float3 {
    0%, 100% { transform: translateX(0px) translateY(0px); }
    50% { transform: translateX(15px) translateY(-15px); }
}

/* 页脚 */
.footer {
    background: #1a202c;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-section h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #e2e8f0;
}

.footer-section p {
    color: #a0aec0;
    line-height: 1.6;
    margin-bottom: 20px;
}

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

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

.footer-section ul li a {
    color: #a0aec0;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #667eea;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.footer-bottom {
    border-top: 1px solid #2d3748;
    padding-top: 20px;
    text-align: center;
    color: #a0aec0;
}

/* 视频弹窗样式 */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.video-modal.show {
    opacity: 1;
    visibility: visible;
}

.video-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.video-modal-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: white;
    overflow: hidden;
    transition: transform 0.3s ease;
    transform: scale(0.95);
}

.video-modal.show .video-modal-content {
    transform: scale(1);
}

.video-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.video-modal-header h3 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
}

.video-modal-close {
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
}

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

/* 轮播图容器样式 */
.demo-carousel-container {
    position: relative;
    width: 100%;
    height: calc(100vh - 80px);
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    display: flex;
    padding: 30px;
    gap: 30px;
}

.demo-carousel {
    flex: 3;
    position: relative;
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
}

.carousel-slides {
    position: relative;
    flex: 1;
    overflow: hidden;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.5s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.carousel-slide.active {
    opacity: 1;
    transform: translateX(0);
}

.carousel-slide.prev {
    transform: translateX(-100%);
}

.carousel-slide img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.slide-description {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 25px 30px;
    background: linear-gradient(to top, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.8));
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.slide-description h4 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.slide-description p {
    color: #666;
    font-size: 1rem;
    line-height: 1.6;
}

/* 轮播图控制按钮 */
.carousel-controls {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    pointer-events: none;
    z-index: 10;
}

.carousel-btn {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    color: #667eea;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.3s ease;
    pointer-events: auto;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.carousel-btn:hover {
    background: white;
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.carousel-btn:active {
    transform: scale(0.95);
}

/* 轮播图指示器 */
.carousel-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.indicator:hover {
    background: rgba(255, 255, 255, 0.8);
}

/* 功能特色侧边栏 */
.demo-features-sidebar {
    flex: 2;
    background: white;
    border-radius: 20px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.demo-features-sidebar h4 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 30px;
    text-align: center;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.features-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 15px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    border-radius: 15px;
    transition: all 0.3s ease;
    border: 1px solid rgba(102, 126, 234, 0.1);
}

.feature-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.15);
    border-color: rgba(102, 126, 234, 0.2);
}

.feature-item i {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.feature-item span {
    font-size: 1rem;
    font-weight: 600;
    color: #333;
    line-height: 1.3;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.back-to-top:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

/* 平板端适配 */
@media (max-width: 1024px) and (min-width: 769px) {
    .demo-carousel-container {
        height: calc(100vh - 80px);
        padding: 25px;
        gap: 25px;
    }

    .demo-carousel {
        flex: 2;
    }

    .demo-features-sidebar {
        flex: 1;
        padding: 20px;
    }

    .demo-features-sidebar h4 {
        font-size: 1.4rem;
        margin-bottom: 20px;
    }

    .features-list {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .feature-item {
        padding: 15px 12px;
        gap: 10px;
    }

    .feature-item i {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }

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

/* 响应式设计 */
@media (max-width: 768px) {
    html, body {
        overflow-x: hidden !important;
        width: 100% !important;
        max-width: 100% !important;
        position: relative;
    }
    
    /* 隐藏移动端滚动条 */
    ::-webkit-scrollbar {
        width: 0 !important;
    }
    
    * {
        box-sizing: border-box !important;
    }
    
    *:not(.nav-menu) {
        max-width: 100% !important;
    }
    
    .container {
        padding: 0 15px !important;
        width: 100% !important;
        max-width: 100% !important;
        overflow-x: hidden !important;
        margin: 0 auto;
    }
    
    .navbar {
        width: 100% !important;
        max-width: 100% !important;
        overflow-x: hidden !important;
    }
    
    .nav-container {
        width: 100% !important;
        max-width: 100% !important;
        padding: 0 15px !important;
        position: relative;
        height: 70px;
    }
    
    .nav-menu-desktop {
        display: none !important;
    }
    
    .nav-menu-mobile {
        position: fixed !important;
        left: 0 !important;
        top: 70px !important;
        display: flex !important;
        flex-direction: column !important;
        background-color: rgba(255, 255, 255, 0.98) !important;
        width: 100% !important;
        height: auto !important;
        max-height: 0 !important;
        text-align: center !important;
        transition: max-height 0.3s ease, opacity 0.3s ease !important;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05) !important;
        backdrop-filter: blur(10px) !important;
        padding: 0 !important;
        z-index: 999 !important;
        opacity: 0 !important;
        pointer-events: none !important;
        overflow: hidden !important;
        margin: 0 !important;
    }

    .nav-menu-mobile.active {
        max-height: 300px !important;
        opacity: 1 !important;
        pointer-events: auto !important;
    }
    
    .nav-menu-mobile .nav-link {
        display: block !important;
        padding: 15px 20px !important;
        color: #333 !important;
        text-decoration: none !important;
        font-weight: 500 !important;
        font-size: 16px !important;
        transition: all 0.3s ease !important;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05) !important;
        margin: 0 !important;
    }
    
    .nav-menu-mobile .nav-link:hover {
        background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%) !important;
        color: #667eea !important;
    }
    
    /* 移动端语言切换按钮样式 */
    .nav-menu-mobile .language-switcher.mobile {
        margin: 10px 20px !important;
        padding: 10px 0 !important;
        border-top: 1px solid rgba(0, 0, 0, 0.05) !important;
    }
    
    .nav-menu-mobile .language-switcher.mobile .lang-toggle {
        width: 100px !important;
        height: 36px !important;
    }
    
    .nav-menu-mobile .language-switcher.mobile .lang-text {
        font-size: 13px !important;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero {
        width: 100% !important;
        max-width: 100% !important;
        overflow-x: hidden !important;
        padding: 100px 20px 80px 20px !important;
    }
    
    .hero-content {
        grid-template-columns: 1fr !important;
        text-align: center !important;
        gap: 30px !important;
        width: 100% !important;
        max-width: 100% !important;
        padding: 0 !important;
    }

    .hero-title {
        font-size: 2.2rem !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        line-height: 1.2 !important;
        margin-bottom: 15px !important;
    }

    .hero-subtitle {
        font-size: 1rem !important;
        margin-bottom: 20px !important;
    }

    .hero-buttons {
        justify-content: center !important;
        flex-wrap: wrap !important;
        width: 100% !important;
        max-width: 100% !important;
        gap: 10px !important;
    }
    
    .btn {
        max-width: 180px !important;
        width: auto !important;
        margin: 5px !important;
        padding: 12px 20px !important;
        font-size: 14px !important;
    }

    .phone-frame {
        width: 220px;
        height: 440px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .advantage-item {
        flex-direction: column !important;
        text-align: center;
    }

    .advantage-item:hover {
        transform: translateY(-5px) !important;
    }

    .download-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .download-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .devices {
        flex-direction: column;
        gap: 20px;
    }

    .phone, .tablet {
        transform: none;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

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

    .social-links {
        justify-content: center;
    }

    /* 轮播图弹窗移动端适配 */
    .video-modal {
        width: 100% !important;
        height: 100% !important;
        overflow-x: hidden !important;
    }
    
    .video-modal-content {
        width: 100% !important;
        height: 100% !important;
        overflow-x: hidden !important;
        max-width: 100% !important;
    }
    
    .video-modal-header {
        width: 100% !important;
        max-width: 100% !important;
        padding: 15px 20px !important;
    }
    
    .demo-carousel-container {
        height: calc(100vh - 80px) !important;
        flex-direction: column !important;
        padding: 10px !important;
        gap: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        overflow-x: hidden !important;
    }

    .demo-carousel {
        flex: 1 !important;
        height: 100% !important;
        border-radius: 15px !important;
        width: 100% !important;
        max-width: 100% !important;
        overflow-x: hidden !important;
    }

    .carousel-slides {
        width: 100% !important;
        max-width: 100% !important;
        overflow-x: hidden !important;
    }

    .carousel-slide {
        padding: 10px !important;
        width: 100% !important;
        max-width: 100% !important;
        overflow-x: hidden !important;
    }

    .carousel-slide img {
        border-radius: 12px !important;
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        object-fit: contain !important;
    }

    /* 移动端隐藏描述文字 */
    .slide-description {
        display: none !important;
    }

    .carousel-btn {
        width: 40px !important;
        height: 40px !important;
        font-size: 14px !important;
    }

    .carousel-controls {
        padding: 0 10px !important;
        width: 100% !important;
        max-width: 100% !important;
    }

    /* 移动端隐藏功能特色侧边栏 */
    .demo-features-sidebar {
        display: none;
    }

    /* 调整指示器位置 */
    .carousel-indicators {
        bottom: 30px;
    }

    .indicator {
        width: 14px;
        height: 14px;
    }
}

@media (max-width: 480px) {
    * {
        max-width: 100vw;
        overflow-x: hidden;
    }
    
    body {
        width: 100vw;
        max-width: 100%;
        overflow-x: hidden;
    }
    
    .container {
        padding: 0 10px;
        width: 100%;
        max-width: 100vw;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }

    .section-title {
        font-size: 2rem;
    }

    .feature-card {
        padding: 30px 20px;
    }

    .advantage-icon {
        width: 80px;
        height: 80px;
        font-size: 32px;
    }

    .advantage-text h3 {
        font-size: 1.5rem;
    }

    .download-text h2 {
        font-size: 2rem;
    }

    .contact-animation {
        padding: 40px 20px;
    }

    .animation-container {
        width: 250px;
        height: 250px;
    }

    .center-circle {
        width: 60px;
        height: 60px;
        font-size: 30px;
    }

    .orbit {
        width: 150px;
        height: 150px;
    }

    .orbit-2 {
        width: 220px;
        height: 220px;
    }

    .floating-card {
        width: 90px;
        height: 80px;
        padding: 6px;
    }

    .card-icon {
        font-size: 24px;
    }

    .floating-card p {
        font-size: 0.7rem;
        margin-top: 6px;
        line-height: 1.1;
    }
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* AOS动画库样式补充 */
[data-aos="fade-up"] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos="fade-up"].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

[data-aos="fade-left"] {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos="fade-left"].aos-animate {
    opacity: 1;
    transform: translateX(0);
}

[data-aos="fade-right"] {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos="fade-right"].aos-animate {
    opacity: 1;
    transform: translateX(0);
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4c93 100%);
}

/* 选择文本样式 */
::selection {
    background: rgba(102, 126, 234, 0.3);
    color: #333;
}

::-moz-selection {
    background: rgba(102, 126, 234, 0.3);
    color: #333;
}