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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

/* 头部导航 */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 2rem 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://images.unsplash.com/photo-1478720568477-152d9b164e26?w=1920&q=80') center/cover;
    opacity: 0.15;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
}

.hero p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s both;
}

.cta-button {
    display: inline-block;
    background: white;
    color: #667eea;
    padding: 1rem 3rem;
    border-radius: 50px;
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    animation: fadeInUp 1s ease 0.4s both;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

/* 公司简介 */
.company-intro {
    background: white;
    text-align: center;
}

.company-intro h2 {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 2rem;
    position: relative;
    display: inline-block;
}

.company-intro h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 2px;
}

.intro-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
    max-width: 800px;
    margin: 2rem auto;
}

.intro-image {
    width: 100%;
    max-width: 900px;
    height: 400px;
    object-fit: cover;
    border-radius: 20px;
    margin: 2rem auto;
    display: block;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* 核心亮点 */
.highlights {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.highlights h2 {
    font-size: 2.5rem;
    text-align: center;
    color: #333;
    margin-bottom: 3rem;
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.highlight-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    text-align: center;
}

.highlight-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.2);
}

.highlight-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.highlight-card h3 {
    font-size: 1.5rem;
    color: #667eea;
    margin-bottom: 1rem;
}

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

/* 使命愿景 */
.mission-section {
    background: white;
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.mission-card {
    text-align: center;
}

.mission-card h3 {
    font-size: 2rem;
    color: #667eea;
    margin-bottom: 1.5rem;
}

.mission-card p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
}

.mission-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 15px;
    margin-top: 1rem;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

/* 核心价值观 */
.values {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.values h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.value-card {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    border: 2px solid rgba(255,255,255,0.2);
    transition: all 0.3s ease;
}

.value-card:hover {
    background: rgba(255,255,255,0.2);
    transform: scale(1.05);
}

.value-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.value-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.value-card p {
    font-size: 1.1rem;
    line-height: 1.6;
}

/* 加入我们 */
.join-section {
    background: white;
    text-align: center;
}

.join-section h2 {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 2rem;
}

.join-features {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2rem;
    margin: 3rem 0;
}

.join-feature {
    flex: 1;
    min-width: 250px;
    max-width: 350px;
    padding: 2rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.join-feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.join-feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.join-feature p {
    font-size: 1.1rem;
    color: #333;
}

.join-image {
    width: 100%;
    max-width: 900px;
    height: 400px;
    object-fit: cover;
    border-radius: 20px;
    margin: 2rem auto;
    display: block;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* 页脚 */
footer {
    background: #2d3748;
    color: white;
    text-align: center;
    padding: 3rem 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-logo {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.footer-tagline {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: #a0aec0;
}

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

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

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

/* 响应式设计 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.2rem;
    }

    .container {
        padding: 3rem 1rem;
    }

    .company-intro h2,
    .highlights h2,
    .mission-card h3,
    .values h2,
    .join-section h2 {
        font-size: 2rem;
    }

    .mission-grid,
    .highlights-grid,
    .values-grid {
        grid-template-columns: 1fr;
    }

    .intro-image,
    .mission-image {
        height: 250px;
    }
}