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

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #cbd5e1 100%);
    min-height: 100vh;
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-logo .logo-image {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid rgba(102, 126, 234, 0.2);
    transition: all 0.3s ease;
}

.nav-logo .logo-image:hover {
    transform: scale(1.1);
    border-color: rgba(102, 126, 234, 0.5);
}

.nav-logo h2 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    font-size: 1.8rem;
}

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

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
}

.nav-menu a:hover {
    color: #667eea;
    background: rgba(102, 126, 234, 0.1);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 80%;
}



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

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

/* 主页横幅 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    margin: 20px;
    border-radius: 40px;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.3),
        inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    border-radius: 40px;
    overflow: hidden;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    opacity: 0.9;
    border-radius: 40px;
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.1) 0%, transparent 50%);
}

/* 浮动形状动画 */
.floating-shapes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

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

.shape-1 {
    width: 60px;
    height: 60px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 80px;
    height: 80px;
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.shape-3 {
    width: 40px;
    height: 40px;
    top: 80%;
    left: 20%;
    animation-delay: 4s;
}

.shape-4 {
    width: 100px;
    height: 100px;
    top: 10%;
    right: 30%;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.3;
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 0.6;
    }
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
    color: white;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    padding: 0.5rem 1.5rem;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.badge-text {
    font-size: 0.9rem;
    font-weight: 500;
    color: white;
    z-index: 2;
}

.badge-glow {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

.hero-main-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.title-line {
    display: block;
}

.gradient-text {
    background: linear-gradient(135deg, #fff 0%, #f8fafc 50%, #e2e8f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    line-height: 1.6;
    max-width: 500px;
}

/* 统计数据样式 */
.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    align-items: center;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: white;
    display: block;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    color: white;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.3);
}

/* 下载按钮增强样式 */
.download-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    width: 100%;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 1.5rem 2.5rem;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.4s ease;
    font-family: inherit;
    text-decoration: none;
    position: relative;
    overflow: hidden;
    width: 100%;
    max-width: 350px;
    min-height: 80px;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-5px) scale(1.02);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 55px;
    height: 55px;
    background: rgba(255, 255, 255, 0.25);
    border-radius: 50%;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.download-btn:hover .btn-icon {
    background: rgba(255, 255, 255, 0.35);
    transform: scale(1.1);
}

.btn-icon i {
    font-size: 1.6rem;
    color: #ffffff;
}

.btn-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.3rem;
    flex: 1;
    text-align: left;
}

.btn-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #ffffff;
    margin: 0;
}

.btn-subtitle {
    font-size: 1rem;
    opacity: 0.9;
    color: #f1f5f9;
    margin: 0;
}

.btn-glow {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.8s ease;
}

.download-btn:hover .btn-glow {
    left: 100%;
}

/* iOS 下载按钮特殊样式 */
.download-btn.primary-download {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.1));
    border: 2px solid rgba(255, 255, 255, 0.4);
}

.download-btn.primary-download:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.2));
    border-color: rgba(255, 255, 255, 0.7);
}

/* Android 下载按钮特殊样式 */
.download-btn.secondary-download {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.2), rgba(22, 163, 74, 0.1));
    border: 2px solid rgba(34, 197, 94, 0.4);
}

.download-btn.secondary-download:hover {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.3), rgba(22, 163, 74, 0.2));
    border-color: rgba(34, 197, 94, 0.7);
}

.download-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    opacity: 0.9;
    color: white;
    text-align: center;
    margin-top: 1rem;
}

/* 手机模型增强样式 */
.phone-mockup {
    position: relative;
    margin: 0 auto;
}

.phone-frame {
    width: 280px;
    height: 560px;
    background: linear-gradient(145deg, #f8fafc, #e2e8f0);
    border-radius: 40px;
    padding: 15px;
    position: relative;
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.3),
        inset 0 2px 4px rgba(255, 255, 255, 0.3);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #000;
    border-radius: 30px;
    overflow: hidden;
    position: relative;
}

.app-screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.phone-notch {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 25px;
    background: #000;
    border-radius: 15px;
    z-index: 3;
}

.phone-button {
    position: absolute;
    right: -3px;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 60px;
    background: linear-gradient(145deg, #e2e8f0, #cbd5e1);
    border-radius: 3px;
}

.phone-shadow {
    position: absolute;
    top: 20px;
    left: 20px;
    right: -20px;
    bottom: -20px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 40px;
    filter: blur(30px);
    z-index: -1;
}

/* 浮动元素动画 */
.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.floating-element {
    position: absolute;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #667eea;
    font-size: 1rem;
    animation: floatElement 4s ease-in-out infinite;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.heart-1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.star-1 {
    top: 40%;
    right: 15%;
    animation-delay: 1s;
}

.heart-2 {
    bottom: 30%;
    left: 20%;
    animation-delay: 2s;
}

.star-2 {
    bottom: 15%;
    right: 25%;
    animation-delay: 3s;
}

@keyframes floatElement {
    0%, 100% {
        transform: translateY(0px) scale(1);
        opacity: 0.7;
    }
    50% {
        transform: translateY(-15px) scale(1.1);
        opacity: 1;
    }
}

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    z-index: 2;
    animation: bounce 2s infinite;
}

.scroll-text {
    font-size: 0.9rem;
    color: white;
    opacity: 0.8;
}

.scroll-arrow {
    color: white;
    opacity: 0.8;
    font-size: 1.2rem;
}

/* 特色功能区域 */
.features {
    padding: 6rem 0;
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
    position: relative;
    margin: 20px;
    border-radius: 35px;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.1);
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.3), transparent);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    border: 1px solid rgba(102, 126, 234, 0.2);
    border-radius: 50px;
    padding: 0.5rem 1.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: #667eea;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    color: #1a202c;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.title-highlight {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    font-size: 1.2rem;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-top: 4rem;
}

.feature-card {
    background: white;
    padding: 3rem 2.5rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 
        0 10px 30px rgba(0, 0, 0, 0.1),
        0 4px 20px rgba(102, 126, 234, 0.05);
    transition: all 0.4s ease;
    border: 1px solid rgba(255, 255, 255, 0.8);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-15px);
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.15),
        0 10px 30px rgba(102, 126, 234, 0.1);
}

.feature-icon {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    position: relative;
    transition: all 0.4s ease;
}

.feature-icon::after {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

.feature-card:hover .feature-icon::after {
    opacity: 0.3;
}

.icon-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-card:hover .icon-glow {
    opacity: 1;
}

.feature-icon i {
    font-size: 2.2rem;
    color: white;
    z-index: 2;
    transition: transform 0.4s ease;
}

.feature-card:hover .feature-icon i {
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: 1.6rem;
    font-weight: 700;
    color: #1a202c;
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}

.feature-card:hover h3 {
    color: #667eea;
}

.feature-card p {
    color: #6b7280;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.feature-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    margin: 0 auto;
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.4s ease;
}

.feature-card:hover .feature-arrow {
    opacity: 1;
    transform: translateX(0);
}

.feature-arrow i {
    color: white;
    font-size: 1rem;
}

/* 下载区域样式 */
.download-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    color: white;
    position: relative;
    overflow: hidden;
    margin: 20px;
    border-radius: 35px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.download-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.download-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 20%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(255,255,255,0.1) 0%, transparent 50%);
}

.download-section .section-header {
    position: relative;
    z-index: 2;
}

.section-badge.light {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
}

.section-title.light {
    color: white;
}

.section-description.light {
    color: rgba(255, 255, 255, 0.9);
}

.download-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 3rem;
    margin-top: 4rem;
    position: relative;
    z-index: 2;
}

.download-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 25px;
    padding: 3.5rem 2.5rem;
    text-align: center;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.download-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.download-card:hover::before {
    opacity: 1;
}

.card-glow {
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, rgba(255,255,255,0.3), rgba(255,255,255,0.1));
    border-radius: 25px;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

.download-card:hover .card-glow {
    opacity: 1;
}

.download-card:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-15px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
}

.download-icon {
    width: 110px;
    height: 110px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2.5rem;
    position: relative;
    transition: all 0.4s ease;
}

.download-icon::after {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    background: conic-gradient(from 0deg, rgba(255,255,255,0.3), transparent, rgba(255,255,255,0.3));
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
    animation: spin 3s linear infinite;
}

.download-card:hover .download-icon::after {
    opacity: 1;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.download-icon i {
    font-size: 3.5rem;
    color: white;
    z-index: 2;
    transition: transform 0.4s ease;
}

.download-card:hover .download-icon i {
    transform: scale(1.1);
}

.download-card h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: white;
}

.download-card p {
    opacity: 0.9;
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.6;
    color: white;
}

.features-list {
    list-style: none;
    padding: 0;
    margin: 2rem 0;
    text-align: left;
}

.features-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    color: white;
    opacity: 0.9;
}

.features-list i {
    color: #4ade80;
    font-size: 1rem;
}

.download-card-btn {
    background: white;
    color: #667eea;
    border: none;
    padding: 1.25rem 2.5rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s ease;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    justify-content: center;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
    min-width: 200px;
}

.btn-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.6s;
}

.download-card-btn:hover .btn-shine {
    left: 100%;
}

.download-card-btn:hover {
    background: #f8fafc;
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    color: #4f46e5;
}

/* 二维码弹窗样式 */
.qr-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.qr-modal-content {
    position: relative;
    background: white;
    margin: 10% auto;
    padding: 2rem;
    width: 90%;
    max-width: 400px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease;
}

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

.qr-close {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    color: #6b7280;
    transition: color 0.3s ease;
}

.qr-close:hover {
    color: #1a202c;
}

.qr-modal-content h3 {
    font-size: 1.5rem;
    color: #1a202c;
    margin-bottom: 1.5rem;
}

.qr-code-container {
    background: white;
    padding: 1rem;
    border-radius: 10px;
    margin-bottom: 1rem;
    display: flex;
    justify-content: center;
}

.qr-modal-content p {
    color: #6b7280;
    font-size: 0.9rem;
}



/* 页脚 */
.footer {
    background: #1a202c;
    color: white;
    padding: 3rem 0 1rem;
    margin: 20px;
    margin-bottom: 0;
    border-radius: 35px 35px 0 0;
    box-shadow: 0 -15px 40px rgba(0, 0, 0, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-logo .logo-image {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-section h3,
.footer-section h4 {
    color: white;
    margin-bottom: 1rem;
}

.footer-section p {
    color: #9ca3af;
    margin-bottom: 1rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #374151;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #6366f1;
    transform: translateY(-2px);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid #374151;
    text-align: center;
    color: #9ca3af;
}

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

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-10px) translateX(-50%);
    }
    60% {
        transform: translateY(-5px) translateX(-50%);
    }
}

/* 粒子背景效果 */
#particles-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

/* 页面加载动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

/* 滚动触发动画 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.animate {
    opacity: 1;
    transform: translateY(0);
}

/* 增强的二维码弹窗样式 */
.qr-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        backdrop-filter: blur(0px);
    }
    to {
        opacity: 1;
        backdrop-filter: blur(8px);
    }
}

.qr-modal-content {
    position: relative;
    background: white;
    margin: 8% auto;
    padding: 3rem;
    width: 90%;
    max-width: 450px;
    border-radius: 25px;
    text-align: center;
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.3),
        0 10px 30px rgba(102, 126, 234, 0.1);
    animation: modalSlideIn 0.4s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.modal-glow {
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.3), rgba(118, 75, 162, 0.3));
    border-radius: 25px;
    z-index: -1;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.5;
    }
    50% {
        opacity: 0.8;
    }
}

.qr-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 2rem;
}

.qr-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    animation: iconBounce 1s ease;
}

@keyframes iconBounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

.qr-icon i {
    color: white;
    font-size: 1.5rem;
}

.qr-code-container {
    background: linear-gradient(145deg, #f8fafc, #e2e8f0);
    padding: 2rem;
    border-radius: 20px;
    margin: 2rem 0;
    display: flex;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.qr-scanner {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.scanner-line {
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    height: 2px;
    background: linear-gradient(90deg, transparent, #667eea, transparent);
    animation: scan 2s linear infinite;
}

@keyframes scan {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateY(160px);
        opacity: 0;
    }
}

.qr-steps {
    display: flex;
    justify-content: space-around;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #e2e8f0;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: #6b7280;
}

.step i {
    font-size: 1.2rem;
    color: #667eea;
}

/* 优化滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

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

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

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #4f46e5, #5b21b6);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero {
        margin: 10px;
        border-radius: 25px;
    }

    .hero-background {
        border-radius: 25px;
    }

    .hero-gradient {
        border-radius: 25px;
    }

    .features {
        margin: 10px;
        border-radius: 25px;
    }

    .download-section {
        margin: 10px;
        border-radius: 25px;
    }

    .footer {
        margin: 10px;
        margin-bottom: 0;
        border-radius: 25px 25px 0 0;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1.2rem;
        max-width: 320px;
    }

    .download-btn {
        max-width: 300px;
        min-height: 75px;
        padding: 1.3rem 2rem;
        border-radius: 25px;
    }

    .btn-icon {
        width: 50px;
        height: 50px;
    }

    .btn-icon i {
        font-size: 1.4rem;
    }

    .btn-title {
        font-size: 1.1rem;
    }

    .btn-subtitle {
        font-size: 0.9rem;
    }

    .download-cards {
        grid-template-columns: 1fr;
    }

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

    .section-header h2 {
        font-size: 2rem;
    }

    .container {
        padding: 0 15px;
    }
}

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

    .hero-text p {
        font-size: 1rem;
    }

    .download-buttons {
        max-width: 280px;
        gap: 1rem;
    }

    .download-btn {
        max-width: 260px;
        min-height: 70px;
        padding: 1.2rem 1.8rem;
        border-radius: 22px;
        gap: 0.8rem;
    }

    .btn-icon {
        width: 45px;
        height: 45px;
    }

    .btn-icon i {
        font-size: 1.3rem;
    }

    .btn-title {
        font-size: 1rem;
    }

    .btn-subtitle {
        font-size: 0.85rem;
    }

    .download-hint {
        font-size: 0.9rem;
        margin-top: 0.8rem;
    }

    .feature-card {
        padding: 2rem 1.5rem;
    }

    .qr-modal-content {
        margin: 20% auto;
        padding: 1.5rem;
    }
}