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

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    color: #333;
    background-color: #f9f9f9;
    line-height: 1.6;
}

/* 容器 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5%;
}

/* 导航栏样式 */
header {
    background: rgba(255, 255, 255, 0.98);
    padding: 1.2rem 5%;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    border-bottom: 3px solid #a6192e;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: #a6192e;
    text-decoration: none;
    letter-spacing: 2px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo span {
    color: #1a1a1a;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 1px;
}

.logo img.logo-img {
    height: 40px;
    width: auto;
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    color: #333;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s;
    padding: 0.5rem 0;
    position: relative;
}

.nav-links a:hover {
    color: #a6192e;
}

.nav-links a:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #a6192e;
    transition: width 0.3s;
}

.nav-links a:hover:after {
    width: 100%;
}

.nav-contact {
    background: #a6192e;
    color: white;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: 2px solid #a6192e;
}

.nav-contact:hover {
    background: white;
    color: #a6192e;
}

/* Hero区域 */
.hero {
    height: 85vh;
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.8)),
                url('https://images.unsplash.com/photo-1547595628-c61a29f496f0?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    padding: 0 5%;
    margin-top: 80px;
    color: white;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    animation: fadeInUp 1s ease-out;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: 1px;
}

.hero-subtitle {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: #f5f5f5;
    font-weight: 300;
}

.hero-highlight {
    color: #f8c291;
    font-weight: 600;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-bottom: 3rem;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #f8c291;
    display: block;
}

.stat-label {
    font-size: 1rem;
    color: #ccc;
    letter-spacing: 1px;
}

/* 按钮样式 */
.btn-primary {
    background: #a6192e;
    color: white;
    padding: 1.2rem 3rem;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    letter-spacing: 1px;
}

.btn-primary:hover {
    background: #8a1525;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(166,25,46,0.3);
}

.btn-secondary {
    background: transparent;
    color: white;
    padding: 1.2rem 3rem;
    border: 2px solid white;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    letter-spacing: 1px;
}

.btn-secondary:hover {
    background: white;
    color: #333;
    transform: translateY(-3px);
}

/* 通用内容区域 */
.content-section {
    padding: 6rem 5%;
    background: white;
}

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

.section-title {
    font-size: 2.5rem;
    color: #1a1a1a;
    margin-bottom: 1rem;
    font-weight: 700;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #666;
    max-width: 700px;
    margin: 0 auto 2rem;
    line-height: 1.8;
}

/* 页脚 */
footer {
    background: #1a1a1a;
    color: white;
    padding: 4rem 5% 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
    max-width: 1400px;
    margin: 0 auto;
    padding-bottom: 3rem;
    border-bottom: 1px solid #333;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: white;
    margin-bottom: 1rem;
}

.footer-logo img.footer-logo-img {
    height: 40px;
    width: auto;
    vertical-align: middle;
    margin-right: 8px;
}

.footer-description {
    color: #999;
    line-height: 1.8;
    margin-bottom: 2rem;
}

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

.social-links a {
    color: white;
    font-size: 1.2rem;
    transition: all 0.3s;
}

.social-links a:hover {
    color: #a6192e;
    transform: translateY(-3px);
}

.footer-links h4 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: white;
}

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

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

.copyright {
    text-align: center;
    padding-top: 2rem;
    color: #666;
    font-size: 0.9rem;
}

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

/* 响应式设计 */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.3rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}