* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5dc;
}
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    position: relative;
}

.menu-toggle {
    display: none;
    font-size: 24px;
    color: #2E8B57;
    cursor: pointer;
}
.logo h1 {
    font-size: 28px;
    color: #2E8B57;
}
.logo span {
    color: #3CB371;
}
nav ul {
    display: flex;
    list-style: none;
}
nav ul li {
    margin-left: 30px;
}
nav ul li a {
    text-decoration: none;
    color: #2E8B57;
    font-weight: 500;
    transition: color 0.3s;
}
nav ul li a:hover {
    color: #3CB371;
}
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url('../picture/hero-bg.webp');
    background-size: cover;
    background-position: center;
    height: 500px;
    display: flex;
    align-items: center;
    text-align: center;
    color: #fff;
}
.hero-content h1 {
    font-size: 42px;
    margin-bottom: 20px;
    font-weight: 700;
}
.hero-content p {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto 30px;
}
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 30px;
}
.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.stat-number {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
}
.stat-text {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
}
.section-title {
    text-align: center;
    margin: 60px 0 40px;
}
.section-title h2 {
    font-size: 32px;
    color: #2E8B57;
}
.section-title .highlight {
    color: #3CB371;
}
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}
.feature {
    background-color: #fff;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
}
.feature:hover {
    transform: translateY(-10px);
}
.feature h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #2E8B57;
}
.feature p {
    color: #666;
}
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 60px;
}
.gallery-item {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s;
    height: 450px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}
.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}
.gallery-item:hover img {
    transform: scale(1.05);
}
.cta {
    background-color: #2E8B57;
    color: #fff;
    text-align: center;
    padding: 80px 0;
    margin-bottom: 60px;
    border-radius: 10px;
}
.cta h2 {
    font-size: 36px;
    margin-bottom: 20px;
}
.cta p {
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto 30px;
}
.btn {
    display: inline-block;
    background-color: #fff;
    color: #2E8B57;
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s;
}
.btn:hover {
    background-color: #f8f8f8;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}
footer {
    background-color: #333;
    color: #fff;
    padding: 40px 0;
    text-align: center;
}
.footer-content {
    max-width: 800px;
    margin: 0 auto;
}
.footer-content p {
    margin-bottom: 20px;
}
.social-links {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}
.social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    background-color: #fff;
    color: #333;
    border-radius: 50%;
    margin: 0 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s;
}
.social-links a:hover {
    background-color: #3CB371;
    color: #fff;
    transform: translateY(-3px);
}
.site-map,
.friend-links {
    margin-top: 30px;
}
.site-map h3,
.friend-links h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #fff;
    font-weight: 600;
}
.site-map ul,
.friend-links ul {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    list-style: none;
}
.site-map ul li,
.friend-links ul li {
    margin: 0 15px 10px;
}
.site-map ul li a,
.friend-links ul li a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s;
    font-size: 16px;
    position: relative;
}
.site-map ul li a:hover,
.friend-links ul li a:hover {
    color: #3CB371;
    text-decoration: underline;
}
.site-map ul li a::before,
.friend-links ul li a::before {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #3CB371;
    transition: width 0.3s;
}
.site-map ul li a:hover::before,
.friend-links ul li a:hover::before {
    width: 100%;
}
.about-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
    line-height: 1.8;
}
.about-content p {
    font-size: 18px;
}

/* SEO 内容样式 */
.seo-content {
    margin-top: 40px;
    text-align: left;
    padding: 30px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}
.seo-content h3 {
    font-size: 24px;
    color: #2E8B57;
    margin-bottom: 20px;
    text-align: center;
}
.seo-content h4 {
    font-size: 20px;
    color: #3CB371;
    margin: 25px 0 15px;
}
.seo-content p {
    font-size: 16px;
    margin-bottom: 15px;
    text-align: left;
}
.seo-content ul {
    list-style-type: disc;
    padding-left: 20px;
    margin: 15px 0;
}
.seo-content ul li {
    margin-bottom: 10px;
    line-height: 1.6;
}
.seo-content strong {
    color: #2E8B57;
    font-weight: 600;
}

/* 响应式设计优化 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: row;
    }
    .menu-toggle {
        display: block;
    }
    nav ul {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: #fff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        z-index: 100;
    }
    nav ul.active {
        display: flex;
    }
    nav ul li {
        margin: 10px 0;
    }
    .hero {
        height: 400px;
    }
    .hero-content h2 {
        font-size: 32px;
    }
    .gallery {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-content h2 {
        font-size: 28px;
    }
    .section-title h2 {
        font-size: 26px;
    }
    .feature {
        padding: 20px;
    }
}