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

:root {
    --primary-color: #FF6B35;
    --secondary-color: #2D3047;
    --accent-color: #00B4D8;
    --light-color: #F8F9FA;
    --dark-color: #212529;
    --gray-color: #6C757D;
    --light-gray: #E9ECEF;
    --success-color: #28A745;
    --ios-color: #000000;
    --android-color: #3DDC84;
    --apk-color: #FF6B35;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #ffffff;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 700;
    font-size: 24px;
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    font-size: 16px;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.nav-menu a.download-nav {
    background-color: var(--primary-color);
    color: white;
    padding: 8px 20px;
    border-radius: 30px;
    font-weight: 600;
}

.nav-menu a.download-nav:hover {
    background-color: #e05a2b;
    transform: translateY(-2px);
}

.mobile-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--dark-color);
}

/* 英雄区域 */
.hero {
    padding: 150px 0 80px;
    background: linear-gradient(135deg, #f9f9f9 0%, #ffffff 100%);
    overflow: hidden;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

.hero-content {
    flex: 1;
    min-width: 300px;
    padding-right: 30px;
}

.hero-image {
    flex: 1;
    min-width: 300px;
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transform: perspective(1000px) rotateY(-10deg);
    transition: var(--transition);
}

.hero-image img:hover {
    transform: perspective(1000px) rotateY(0deg);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    line-height: 1.2;
    margin-bottom: 20px;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--gray-color);
    margin-bottom: 40px;
    line-height: 1.8;
}

.stats {
    display: flex;
    gap: 40px;
    margin: 40px 0;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    font-size: 1rem;
    color: var(--gray-color);
    margin-top: 5px;
}

/* 下载区域 */
.download-section {
    background-color: white;
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-top: 40px;
}

.download-section h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.download-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 30px;
}

.download-btn {
    display: flex;
    align-items: center;
    text-decoration: none;
    padding: 15px 25px;
    border-radius: 10px;
    transition: var(--transition);
    flex: 1;
    min-width: 200px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.download-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.download-btn i {
    font-size: 2rem;
    margin-right: 15px;
}

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

.btn-text span {
    font-weight: 600;
    font-size: 1.1rem;
}

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

.ios-btn {
    background-color: var(--ios-color);
    color: white;
}

.android-btn {
    background-color: var(--android-color);
    color: var(--dark-color);
}

.apk-btn {
    background-color: var(--apk-color);
    color: white;
}

.qr-container {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid var(--light-gray);
}

.qr-code {
    text-align: center;
}

.qr-code img {
    width: 150px;
    height: 150px;
    border-radius: 10px;
    margin-bottom: 10px;
    border: 1px solid var(--light-gray);
    padding: 10px;
    background-color: white;
}

.device-selector {
    flex: 1;
    min-width: 300px;
}

.device-selector p {
    margin-bottom: 15px;
    font-weight: 500;
}

.device-buttons {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.device-btn {
    padding: 10px 20px;
    background-color: var(--light-gray);
    border: none;
    border-radius: 30px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.device-btn.active, .device-btn:hover {
    background-color: var(--primary-color);
    color: white;
}

#deviceInstructions {
    background-color: var(--light-gray);
    padding: 20px;
    border-radius: var(--border-radius);
    min-height: 80px;
}

/* 功能特色 */
.features {
    padding: 100px 0;
    background-color: var(--light-color);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--gray-color);
    margin-bottom: 50px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-card {
    background-color: white;
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(255, 107, 53, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-icon i {
    font-size: 2rem;
    color: var(--primary-color);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.feature-card p {
    color: var(--gray-color);
    line-height: 1.6;
}

/* 应用截图 */
.screenshots {
    padding: 100px 0;
}

.screenshot-slider {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
    margin-top: 50px;
}

.screenshot-container {
    flex: 1;
    min-width: 300px;
    max-width: 350px;
}

.screenshot-frame {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    position: relative;
}

.screenshot-frame img {
    width: 100%;
    display: block;
    transition: var(--transition);
}

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

.screenshot-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 15px;
    text-align: center;
    font-weight: 600;
}

/* 用户评价 */
.testimonials {
    padding: 100px 0;
    background-color: var(--light-color);
}

.testimonial-slider {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
    margin-top: 50px;
}

.testimonial-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    flex: 1;
    min-width: 300px;
    max-width: 500px;
}

.testimonial-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--dark-color);
    margin-bottom: 25px;
    font-style: italic;
    position: relative;
    padding-left: 20px;
    border-left: 3px solid var(--primary-color);
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.2rem;
    margin-right: 15px;
}

.author-info h4 {
    font-weight: 600;
    margin-bottom: 5px;
}

.author-info p {
    font-size: 0.9rem;
    color: var(--gray-color);
}

.rating {
    color: #FFC107;
    margin-left: auto;
    font-size: 1.2rem;
}

/* 底部CTA */
.cta {
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, #e05a2b 100%);
    color: white;
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.cta-btn {
    display: flex;
    align-items: center;
    text-decoration: none;
    padding: 15px 30px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.cta-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.cta-btn i {
    margin-right: 10px;
    font-size: 1.5rem;
}

.cta-btn.ios {
    background-color: var(--ios-color);
    color: white;
}

.cta-btn.android {
    background-color: var(--android-color);
    color: var(--dark-color);
}

.cta-btn.apk {
    background-color: white;
    color: var(--primary-color);
}

/* 页脚 */
.footer {
    background-color: var(--secondary-color);
    color: white;
    padding: 70px 0 30px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-section {
    flex: 1;
    min-width: 250px;
}

.footer-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: white;
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-logo img {
    height: 40px;
    margin-right: 10px;
}

.footer-section p {
    margin-bottom: 20px;
    line-height: 1.6;
    opacity: 0.8;
}

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

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-icons a:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

.footer-section h4 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: white;
}

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

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-section ul li i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.footer-bottom p {
    margin-bottom: 5px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .download-btn {
        min-width: 100%;
    }
    
    .hero-content, .hero-image {
        padding-right: 0;
        margin-bottom: 40px;
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: white;
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        transition: var(--transition);
        z-index: 999;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .cta h2 {
        font-size: 2rem;
    }
    
    .footer-content {
        gap: 30px;
    }
}