/* 泡泡下载页面/assets/css/style.css */

/* ===== 重置和基础样式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

body {
    background-color: #f2f2f7;
    color: #1d1d1f;
    line-height: 1.5;
    max-width: 100vw;
    overflow-x: hidden;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== 头部导航 ===== */
header {
    background-color: rgba(242, 242, 247, 0.9);
    backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 12px 0;
    border-bottom: 1px solid #d1d1d6;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 800;
    color: #1d1d1f;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo span {
    color: #007aff;
    background: linear-gradient(135deg, #007aff, #0056cc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.version-badge {
    background: linear-gradient(135deg, #007aff, #0056cc);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* ===== 设备检测横幅 ===== */
.device-banner {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    border-radius: 16px;
    margin: 25px auto;
    max-width: 900px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.25);
    animation: slideInDown 0.5s ease-out;
}

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

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

.device-icon {
    font-size: 28px;
    background: rgba(255, 255, 255, 0.15);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
}

.device-details h3 {
    margin: 0 0 6px 0;
    font-size: 20px;
    font-weight: 600;
}

.device-details p {
    margin: 0;
    opacity: 0.9;
    font-size: 14px;
}

.status-badge {
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-badge.supported {
    background: rgba(52, 199, 89, 0.2);
    color: #34c759;
    border: 1px solid rgba(52, 199, 89, 0.3);
}

.status-badge.unsupported {
    background: rgba(255, 59, 48, 0.15);
    color: #ff3b30;
    border: 1px solid rgba(255, 59, 48, 0.3);
}

/* ===== 应用信息区域 ===== */
.app-header {
    background: linear-gradient(180deg, #ffffff 0%, #f9f9f9 100%);
    padding: 35px 0 25px;
    border-bottom: 1px solid #e5e5ea;
    position: relative;
    overflow: hidden;
}

.app-header::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(0, 122, 255, 0.05) 0%, rgba(0, 122, 255, 0) 70%);
    border-radius: 50%;
}

.app-info {
    display: flex;
    margin-bottom: 30px;
    gap: 25px;
    align-items: center;
}

.app-icon {
    width: 130px;
    height: 130px;
    border-radius: 25px;
    background: linear-gradient(135deg, #00b2ff 0%, #006aff 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 55px;
    box-shadow: 0 15px 35px rgba(0, 178, 255, 0.25);
    flex-shrink: 0;
    overflow: hidden;
    position: relative;
    transition: transform 0.3s ease;
}

.app-icon:hover {
    transform: scale(1.05);
}

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

.default-logo {
    font-size: 48px;
    font-weight: bold;
    letter-spacing: 2px;
}

.app-details {
    flex: 1;
}

.app-name {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #1d1d1f 0%, #424245 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.app-developer {
    font-size: 20px;
    color: #007aff;
    margin-bottom: 10px;
    font-weight: 600;
}

.app-category {
    font-size: 16px;
    color: #8e8e93;
    margin-bottom: 18px;
    display: inline-block;
    padding: 4px 12px;
    background: #f2f2f7;
    border-radius: 12px;
}

.rating {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
    gap: 8px;
}

.stars {
    color: #ffcc00;
    font-size: 18px;
}

.rating-value {
    font-weight: 700;
    font-size: 20px;
}

.rating-count {
    color: #8e8e93;
    font-size: 16px;
}

.free-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #34c759, #30b453);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    margin-top: 12px;
    box-shadow: 0 4px 15px rgba(52, 199, 89, 0.2);
}

/* ===== 安全盾标志区域 ===== */
.security-shield {
    background: linear-gradient(135deg, #34c759 0%, #30b453 100%);
    color: white;
    padding: 30px;
    border-radius: 20px;
    margin: 40px auto;
    max-width: 900px;
    display: flex;
    align-items: center;
    gap: 25px;
    box-shadow: 0 10px 30px rgba(52, 199, 89, 0.25);
    position: relative;
    overflow: hidden;
}

.security-shield::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 70%);
}

.shield-icon {
    font-size: 60px;
    background: rgba(255, 255, 255, 0.15);
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    backdrop-filter: blur(10px);
    z-index: 1;
}

.shield-text {
    flex: 1;
    z-index: 1;
}

.shield-text h3 {
    margin: 0 0 12px 0;
    font-size: 26px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.shield-text p {
    margin: 0;
    opacity: 0.9;
    font-size: 17px;
    line-height: 1.5;
}

/* ===== 安装按钮区域 ===== */
.download-section {
    text-align: center;
    margin: 50px auto;
    max-width: 900px;
}

.install-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding: 22px 35px;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 700;
    font-size: 20px;
    margin: 30px auto;
    max-width: 450px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.install-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

.install-btn:hover::before {
    left: 100%;
}

.install-btn.android-btn {
    background: linear-gradient(135deg, #3ddc84 0%, #34c759 100%);
    color: white;
    box-shadow: 0 10px 30px rgba(61, 220, 132, 0.3);
}

.install-btn.ios-btn {
    background: linear-gradient(135deg, #007aff 0%, #0056cc 100%);
    color: white;
    box-shadow: 0 10px 30px rgba(0, 122, 255, 0.3);
}

.install-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.install-btn:active {
    transform: translateY(-2px);
}

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

.btn-title {
    font-size: 22px;
    font-weight: 700;
}

.btn-subtitle {
    font-size: 15px;
    opacity: 0.9;
    font-weight: 500;
}

/* ===== 安装说明区域 ===== */
.install-steps, .ios-install-help, .desktop-help {
    background: white;
    padding: 30px;
    border-radius: 20px;
    margin: 40px auto;
    max-width: 900px;
    border: 1px solid #e5e5ea;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.install-steps h4, .ios-install-help h4, .desktop-help h4 {
    color: #1d1d1f;
    margin-bottom: 20px;
    font-size: 20px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.install-steps ol, .ios-install-help ol, .desktop-help ul {
    padding-left: 25px;
    color: #1d1d1f;
    font-size: 16px;
    line-height: 1.7;
}

.install-steps li, .ios-install-help li, .desktop-help li {
    margin-bottom: 15px;
    padding-left: 8px;
}

.install-steps li::marker, .ios-install-help li::marker {
    color: #007aff;
    font-weight: bold;
}

.note {
    background: linear-gradient(135deg, #fff3cd, #ffeaa7);
    border-left: 5px solid #ffc107;
    padding: 18px;
    border-radius: 10px;
    margin-top: 20px;
    color: #856404;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
}

.note i {
    font-size: 20px;
    color: #ffc107;
}

/* ===== 不支持设备提示 ===== */
.unsupported-message {
    background: linear-gradient(135deg, #ff3b30 0%, #d70015 100%);
    color: white;
    padding: 50px 40px;
    border-radius: 20px;
    margin: 50px auto;
    max-width: 900px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(255, 59, 48, 0.25);
    animation: pulseWarning 2s infinite;
}

@keyframes pulseWarning {
    0%, 100% {
        box-shadow: 0 10px 30px rgba(255, 59, 48, 0.25);
    }
    50% {
        box-shadow: 0 10px 40px rgba(255, 59, 48, 0.4);
    }
}

.unsupported-message i {
    font-size: 70px;
    margin-bottom: 25px;
    display: block;
}

.unsupported-message h3 {
    font-size: 28px;
    margin-bottom: 15px;
    font-weight: 700;
}

.unsupported-message p {
    opacity: 0.9;
    font-size: 17px;
    margin-bottom: 10px;
}

/* ===== 平台选择区域 ===== */
.platform-choices {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin: 40px auto;
    max-width: 900px;
}

.platform-choice {
    background: white;
    border: 1px solid #e5e5ea;
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.platform-choice::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.platform-choice:hover::before {
    opacity: 1;
}

.platform-choice:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    border-color: #007aff;
}

.platform-choice .platform-icon {
    font-size: 52px;
    margin-bottom: 20px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

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

.platform-choice h4 {
    margin: 0 0 12px 0;
    color: #1d1d1f;
    font-size: 22px;
    font-weight: 700;
}

.platform-choice p {
    margin: 0 0 25px 0;
    color: #8e8e93;
    font-size: 16px;
    line-height: 1.5;
}

.platform-download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    background: linear-gradient(135deg, #007aff, #0056cc);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    width: 100%;
    max-width: 200px;
    margin: 0 auto;
}

.platform-download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 122, 255, 0.3);
}

.platform-note {
    font-size: 13px;
    color: #8e8e93;
    margin-top: 15px;
    font-style: italic;
}

.no-platforms {
    grid-column: 1 / -1;
    text-align: center;
    padding: 50px;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: 20px;
    color: #8e8e93;
    border: 2px dashed #dee2e6;
}

.no-platforms i {
    font-size: 60px;
    margin-bottom: 25px;
    color: #ff3b30;
    display: block;
}

.no-platforms h4 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #6c757d;
}

.no-platforms p {
    font-size: 16px;
    margin-bottom: 10px;
}

/* ===== 功能特点区域 ===== */
.features-section {
    background: white;
    padding: 60px 0;
    border-top: 1px solid #e5e5ea;
    border-bottom: 1px solid #e5e5ea;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 50px;
    background: linear-gradient(135deg, #1d1d1f, #424245);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    max-width: 1000px;
    margin: 0 auto;
}

.feature-item {
    background: #f8f9fa;
    border-radius: 20px;
    padding: 25px;
    display: flex;
    align-items: flex-start;
    gap: 20px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.feature-item:hover {
    background: white;
    border-color: #007aff;
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 122, 255, 0.1);
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #007aff, #0056cc);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 22px;
    flex-shrink: 0;
}

.feature-text h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: #1d1d1f;
}

.feature-text p {
    color: #8e8e93;
    font-size: 15px;
    line-height: 1.5;
}

/* ===== 安全保障区域 ===== */
.safety-info {
    background: white;
    padding: 50px;
    border-radius: 25px;
    margin: 60px auto;
    max-width: 900px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    border: 1px solid #e5e5ea;
}

.safety-info h3 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 40px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    color: #1d1d1f;
}

.safety-points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.safety-point {
    text-align: center;
    padding: 25px;
    background: #f8f9fa;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.safety-point:hover {
    background: white;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    transform: translateY(-5px);
}

.safety-point i {
    font-size: 48px;
    margin-bottom: 20px;
    color: #007aff;
    display: block;
}

.safety-point h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 15px;
    color: #1d1d1f;
}

.safety-point p {
    color: #8e8e93;
    font-size: 15px;
    line-height: 1.6;
}

/* ===== 技术支持区域 ===== */
.support-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 50px;
    border-radius: 25px;
    margin: 60px auto;
    max-width: 900px;
    text-align: center;
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.25);
}

.support-section h3 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.support-section p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 35px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.contact-methods {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 30px;
    background: rgba(255, 255, 255, 0.15);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 17px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.contact-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* ===== 底部区域 ===== */
footer {
    background: #1d1d1f;
    color: #8e8e93;
    padding: 60px 0 40px;
    margin-top: 80px;
}

.footer-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 40px;
}

.footer-link {
    color: #8e8e93;
    text-decoration: none;
    font-size: 15px;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: #fff;
}

.footer-copyright {
    text-align: center;
    font-size: 14px;
    padding-top: 30px;
    border-top: 1px solid #424245;
    color: #8e8e93;
}

.footer-copyright p {
    margin-bottom: 10px;
}

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
    .app-info {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .app-icon {
        width: 110px;
        height: 110px;
        font-size: 45px;
    }
    
    .app-name {
        font-size: 28px;
    }
    
    .device-banner {
        flex-direction: column;
        gap: 15px;
        text-align: center;
        padding: 20px;
    }
    
    .security-shield {
        flex-direction: column;
        text-align: center;
        padding: 25px;
        gap: 20px;
    }
    
    .shield-icon {
        width: 80px;
        height: 80px;
        font-size: 48px;
    }
    
    .shield-text h3 {
        font-size: 22px;
        justify-content: center;
    }
    
    .platform-choices {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .safety-points {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .contact-methods {
        flex-direction: column;
        align-items: center;
    }
    
    .contact-btn {
        width: 100%;
        max-width: 300px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container, .nav-container {
        padding: 0 15px;
    }
    
    .logo {
        font-size: 20px;
    }
    
    .version-badge {
        padding: 5px 10px;
        font-size: 12px;
    }
    
    .device-banner {
        padding: 15px;
        border-radius: 12px;
    }
    
    .device-icon {
        width: 50px;
        height: 50px;
        font-size: 22px;
    }
    
    .device-details h3 {
        font-size: 18px;
    }
    
    .install-btn {
        padding: 18px 25px;
        font-size: 18px;
    }
    
    .btn-title {
        font-size: 20px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .safety-info, .support-section {
        padding: 30px 20px;
    }
    
    .safety-info h3, .support-section h3 {
        font-size: 26px;
    }
}

/* ===== 动画效果 ===== */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.floating {
    animation: float 3s ease-in-out infinite;
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.shimmer-effect {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}

/* ===== 加载状态 ===== */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: loadingShimmer 1.5s infinite;
}

@keyframes loadingShimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* ===== 工具类 ===== */
.text-center {
    text-align: center;
}

.text-gradient {
    background: linear-gradient(135deg, #007aff, #0056cc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.shadow-lg {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.rounded-lg {
    border-radius: 20px;
}

.mt-4 {
    margin-top: 40px;
}

.mb-4 {
    margin-bottom: 40px;
}

.p-4 {
    padding: 40px;
    
    
}

/* ===== 应用截图区域样式 ===== */
.screenshots {
    background: white;
    padding: 60px 0 40px;
    border-top: 1px solid #e5e5ea;
    border-bottom: 1px solid #e5e5ea;
    position: relative;
    overflow: hidden;
}

.screenshots::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #007aff, transparent);
}

.screenshots-container {
    display: flex;
    overflow-x: auto;
    padding: 0 20px 30px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    gap: 20px;
    scrollbar-width: thin;
    scrollbar-color: #007aff #f2f2f7;
}

.screenshots-container::-webkit-scrollbar {
    height: 8px;
}

.screenshots-container::-webkit-scrollbar-track {
    background: #f2f2f7;
    border-radius: 10px;
}

.screenshots-container::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #007aff, #0056cc);
    border-radius: 10px;
}

.screenshot {
    width: 240px;
    height: 480px;
    border-radius: 30px;
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
    flex-shrink: 0;
    scroll-snap-align: start;
    background: #f2f2f7;
    position: relative;
    transition: all 0.3s ease;
    border: 3px solid white;
}

.screenshot:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

.screenshot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.screenshot:hover img {
    transform: scale(1.05);
}

.screenshot-overlay {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: bold;
    backdrop-filter: blur(5px);
}

.screenshots-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    color: #8e8e93;
    font-size: 15px;
    font-weight: 500;
    margin-top: 20px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(10px);
    }
}

/* ===== 二维码区域样式 ===== */
.qr-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 60px 20px;
    border-radius: 25px;
    margin: 40px auto;
    max-width: 900px;
    border: 1px solid #dee2e6;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.qr-container {
    max-width: 500px;
    margin: 0 auto;
    text-align: center;
}

.qr-header {
    margin-bottom: 30px;
}

.qr-header i {
    font-size: 48px;
    color: #007aff;
    margin-bottom: 15px;
    display: block;
}

.qr-header h3 {
    font-size: 28px;
    font-weight: 800;
    color: #1d1d1f;
    margin-bottom: 10px;
}

.qr-header p {
    color: #8e8e93;
    font-size: 16px;
    line-height: 1.5;
}

.qr-code {
    position: relative;
    width: 220px;
    height: 220px;
    margin: 0 auto 30px;
    background: white;
    border-radius: 20px;
    padding: 15px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border: 1px solid #e5e5ea;
}

.qr-code img {
    width: 100%;
    height: 100%;
    border-radius: 15px;
}

.qr-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 122, 255, 0.05);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.qr-code:hover .qr-overlay {
    opacity: 1;
}

.qr-overlay i {
    font-size: 60px;
    color: rgba(0, 122, 255, 0.2);
}

.qr-steps {
    background: white;
    padding: 25px;
    border-radius: 20px;
    margin: 30px 0;
    border: 1px solid #e5e5ea;
    text-align: left;
}

.qr-steps h4 {
    color: #1d1d1f;
    margin-bottom: 20px;
    font-size: 18px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.qr-steps ol {
    padding-left: 25px;
    color: #1d1d1f;
    font-size: 15px;
    line-height: 1.7;
}

.qr-steps li {
    margin-bottom: 12px;
    padding-left: 5px;
}

.qr-steps li::marker {
    color: #007aff;
    font-weight: bold;
}

.qr-alternative {
    background: rgba(0, 122, 255, 0.05);
    padding: 25px;
    border-radius: 20px;
    margin-top: 30px;
}

.qr-alternative p {
    color: #1d1d1f;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.alternative-options {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.alt-option {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    background: white;
    color: #007aff;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s ease;
    border: 1px solid #e5e5ea;
    min-width: 140px;
}

.alt-option:hover {
    background: #007aff;
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 122, 255, 0.2);
    border-color: #007aff;
}

/* ===== 应用详情区域 ===== */
.app-details-section {
    background: white;
    padding: 60px 0;
}

.app-details-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.app-details-content h2 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 30px;
    color: #1d1d1f;
    text-align: center;
}

.app-description {
    font-size: 18px;
    line-height: 1.8;
    color: #1d1d1f;
    margin-bottom: 40px;
}

.description-points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.description-point {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 20px;
    border-left: 5px solid #007aff;
    transition: all 0.3s ease;
}

.description-point:hover {
    background: white;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    transform: translateY(-5px);
}

.description-point h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    color: #1d1d1f;
    display: flex;
    align-items: center;
    gap: 10px;
}

.description-point p {
    color: #8e8e93;
    font-size: 15px;
    line-height: 1.6;
}

/* ===== 版本信息 ===== */
.versions-section {
    background: #f8f9fa;
    padding: 60px 0;
    border-top: 1px solid #e5e5ea;
}

.versions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

.version-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid #e5e5ea;
    transition: all 0.3s ease;
}

.version-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    border-color: #007aff;
}

.version-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.version-badge {
    padding: 6px 15px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 14px;
}

.version-badge.android {
    background: linear-gradient(135deg, rgba(61, 220, 132, 0.1), rgba(52, 199, 89, 0.1));
    color: #34c759;
    border: 1px solid rgba(52, 199, 89, 0.2);
}

.version-badge.ios {
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.1), rgba(0, 86, 204, 0.1));
    color: #007aff;
    border: 1px solid rgba(0, 122, 255, 0.2);
}

.version-number {
    font-size: 24px;
    font-weight: 700;
    color: #1d1d1f;
}

.version-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.version-features li {
    padding: 10px 0;
    border-bottom: 1px solid #f2f2f7;
    color: #1d1d1f;
    font-size: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.version-features li:last-child {
    border-bottom: none;
}

.version-features li i {
    color: #34c759;
    font-size: 14px;
}

/* ===== 响应式调整 ===== */
@media (max-width: 768px) {
    .screenshot {
        width: 200px;
        height: 400px;
    }
    
    .screenshots-indicator {
        font-size: 14px;
    }
    
    .qr-code {
        width: 200px;
        height: 200px;
    }
    
    .alternative-options {
        flex-direction: column;
        align-items: center;
    }
    
    .alt-option {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .screenshot {
        width: 180px;
        height: 360px;
        border-radius: 25px;
    }
    
    .screenshots-container {
        gap: 15px;
        padding: 0 15px 20px;
    }
    
    .qr-header h3 {
        font-size: 24px;
    }
    
    .qr-header p {
        font-size: 15px;
    }
    
    .qr-code {
        width: 180px;
        height: 180px;
    }
    
    .qr-steps {
        padding: 20px;
    }
}