/* 基础样式 */
:root {
    --primary-color: #4285f4;
    --secondary-color: #34a853;
    --accent-color: #ea4335;
    --light-color: #f8f9fa;
    --dark-color: #202124;
    --gray-color: #5f6368;
    --light-gray: #e8eaed;
    --white: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    color: var(--dark-color);
    line-height: 1.6;
    background-color: var(--light-color);
}

a {
    text-decoration: none;
    color: inherit;
}

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

/* 头部区域 */
.hero {
    height: 100vh;
    min-height: 600px;
    background: linear-gradient(135deg, var(--primary-color), var(--light-color));
    color: var(--white);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* background: url('https://via.placeholder.com/1920x1080?text=证件照背景') no-repeat center/cover; */
    opacity: 0.1;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: 20px;
}

.title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.app-icon {
    width: 150px;
    height: 150px;
    margin: 0 auto;
    border-radius: 30px;
    overflow: hidden;
    box-shadow: var(--shadow);
    background-color: var(--white);
    display: flex;
    justify-content: center;
    align-items: center;
}

.icon-img {
    width: 100%;
    height: auto;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 2rem;
    animation: bounce 2s infinite;
    cursor: pointer;
}

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

/* 通用区块样式 */
.section {
    padding: 80px 0;
    position: relative;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
    color: var(--dark-color);
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    margin: 1rem auto;
    border-radius: 2px;
}

.section-text {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 2rem;
    text-align: center;
    color: var(--gray-color);
}

/* 功能卡片 */
.features-section {
    background-color: var(--white);
}

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

.feature-card {
    background: var(--white);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--light-gray);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--white);
    font-size: 2rem;
}

.feature-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.feature-desc {
    color: var(--gray-color);
    margin-bottom: 1.5rem;
}

.feature-img {
    width: 100%;
    height: 200px;
    border-radius: 8px;
    overflow: hidden;
}

.feature-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.feature-card:hover .feature-img img {
    transform: scale(1.05);
}

/* 特色区域 */
.highlights-section {
    background-color: var(--light-color);
}

.highlight-item {
    display: flex;
    align-items: center;
    margin: 60px 0;
    gap: 40px;
}

.highlight-item.reverse {
    flex-direction: row-reverse;
}

.highlight-content {
    flex: 1;
}

.highlight-title {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
}

.highlight-desc {
    font-size: 1.1rem;
    color: var(--gray-color);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.highlight-img {
    flex: 1;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.highlight-img img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.highlight-img:hover img {
    transform: scale(1.03);
}

/* 团队区域 */
.team-section {
    background-color: var(--white);
}

.team-intro {
    margin-bottom: 50px !important;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.team-member {
    text-align: center;
    padding: 30px 20px;
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--light-gray);
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.member-avatar {
    width: 150px;
    height: 150px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 5px solid var(--light-gray);
}

.member-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.member-name {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.member-title {
    font-size: 1rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.member-desc {
    font-size: 0.95rem;
    color: var(--gray-color);
}

/* CTA区域 */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color), #ffffff);
    color: var(--white);
    text-align: center;
}

.cta-section .section-title,
.cta-section .section-text {
    color: var(--white);
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 30px;
    background-color: var(--white);
    color: var(--dark-color);
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.download-btn i {
    margin-right: 10px;
    font-size: 1.2rem;
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 7px 15px rgba(0, 0, 0, 0.2);
}

/* 页脚 */
.footer {
    background-color: var(--dark-color);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.footer-logo {
    margin-bottom: 20px;
}

.logo-img {
    height: 40px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 20px;
}

.footer-link {
    transition: var(--transition);
    opacity: 0.8;
}

.footer-link:hover {
    opacity: 1;
    color: var(--primary-color);
}

.footer-social {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.social-icon {
    font-size: 1.5rem;
    opacity: 0.8;
    transition: var(--transition);
}

.social-icon:hover {
    opacity: 1;
    color: var(--primary-color);
    transform: translateY(-3px);
}

.footer-copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    opacity: 0.7;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .title {
        font-size: 3rem;
    }
    
    .highlight-item {
        flex-direction: column;
    }
    
    .highlight-item.reverse {
        flex-direction: column;
    }
    
    .highlight-img {
        margin-top: 30px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .title {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1.2rem;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .hero {
        min-height: 500px;
    }
    
    .title {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
}