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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.8; /* 增加行高 */
    color: #333;
    background-color: #fff;
    letter-spacing: 0.5px; /* 增加字符间距 */
}

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

/* 导航栏样式 */
.navbar {
    background: linear-gradient(135deg, #2c5aa0 0%, #1e3a5f 100%);
    padding: 1rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    color: white;
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-logo i {
    margin-right: 10px;
    color: #4CAF50;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: white;
    text-decoration: none;
    transition: color 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 5px;
}

.nav-link:hover {
    color: #4CAF50;
    background-color: rgba(255,255,255,0.1);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主要内容区域 */
main {
    margin-top: 80px;
}

/* 英雄区域 */
.hero-section {
    background: linear-gradient(135deg, #e3f2fd 0%, #f1f8e9 100%);
    padding: 4rem 0;
    display: flex;
    align-items: center;
    min-height: 70vh;
}

.hero-content {
    flex: 1;
    padding: 0 2rem;
}

.hero-title {
    font-size: 3rem;
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: #666;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 24px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    color: white;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #2c5aa0;
    border: 2px solid #2c5aa0;
}

.btn-secondary:hover {
    background: #2c5aa0;
    color: white;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #4CAF50;
    border: 2px solid #4CAF50;
}

.btn-outline:hover {
    background: #4CAF50;
    color: white;
}

.hero-image {
    flex: 1;
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* 快速导航卡片 */
.quick-nav {
    padding: 4rem 0;
    background: white;
}

.quick-nav h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c5aa0;
    margin-bottom: 3rem;
}

.nav-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.nav-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e0e0e0;
}

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

.nav-card i {
    font-size: 3rem;
    color: #4CAF50;
    margin-bottom: 1rem;
}

.nav-card h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.nav-card p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.card-link {
    color: #4CAF50;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.card-link:hover {
    color: #45a049;
}

/* 最新文章区域 */
.latest-posts {
    padding: 4rem 0;
    background: #f8f9fa;
}

.latest-posts h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c5aa0;
    margin-bottom: 3rem;
}

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

.post-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.post-card:hover {
    transform: translateY(-5px);
}

.post-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.post-content {
    padding: 1.5rem;
}

.post-content h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.post-content p {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.read-more {
    color: #4CAF50;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.read-more:hover {
    color: #45a049;
}

/* 明星边牧区域 */
.star-collie {
    padding: 4rem 0;
    background: white;
}

.star-collie h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c5aa0;
    margin-bottom: 3rem;
}

.star-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.star-item {
    text-align: center;
    background: white;
    border-radius: 15px;
    padding: 1rem;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.star-item:hover {
    transform: translateY(-5px);
}

.star-item img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1rem;
    border: 3px solid #4CAF50;
}

.star-info h4 {
    color: #2c5aa0;
    margin-bottom: 0.5rem;
}

.star-info p {
    color: #666;
    font-size: 0.9rem;
}

.submit-photo {
    text-align: center;
    margin-top: 2rem;
}

/* 页脚 */
.footer {
    background: linear-gradient(135deg, #2c5aa0 0%, #1e3a5f 100%);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #4CAF50;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #4CAF50;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #444;
    color: #ccc;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: #2c5aa0;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0,0,0,0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-section {
        flex-direction: column;
        text-align: center;
        padding: 2rem 0;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .nav-cards {
        grid-template-columns: 1fr;
    }

    .posts-grid {
        grid-template-columns: 1fr;
    }

    .star-gallery {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .quick-nav h2,
    .latest-posts h2,
    .star-collie h2 {
        font-size: 2rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

/* 改进文字间距 */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: 1.5rem; /* 增加标题下边距 */
    line-height: 1.4;
    letter-spacing: 0.5px;
}

p {
    margin-bottom: 1.2rem; /* 增加段落间距 */
    line-height: 1.8;
}

.nav-card p {
    color: #666;
    margin-bottom: 1.8rem; /* 增加卡片文字间距 */
    line-height: 1.8;
    padding: 0 1rem; /* 增加左右内边距 */
}

.post-content {
    padding: 2rem; /* 增加内容区域内边距 */
}

.post-content h3 {
    color: #2c5aa0;
    margin-bottom: 1.5rem; /* 增加标题下边距 */
    font-size: 1.2rem;
    line-height: 1.4;
}

.post-content p {
    color: #666;
    margin-bottom: 1.5rem; /* 增加段落间距 */
    line-height: 1.8;
}

/* 页面标题样式 */
.page-header {
    background: linear-gradient(135deg, #e3f2fd 0%, #f1f8e9 100%);
    padding: 6rem 0 4rem;
    text-align: center;
    margin-top: 80px;
}

.page-header h1 {
    font-size: 3rem;
    color: #2c5aa0;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.page-header p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 0;
}

/* 内容区域样式 */
.content-section {
    padding: 4rem 0;
    margin-bottom: 3rem;
}

.content-section h2 {
    font-size: 2.2rem;
    color: #2c5aa0;
    margin-bottom: 2rem;
    text-align: center;
}

.content-section h3 {
    font-size: 1.5rem;
    color: #2c5aa0;
    margin-bottom: 1.5rem;
}

.content-section p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: #555;
}

.content-section ul {
    margin-bottom: 2rem;
    padding-left: 2rem;
}

.content-section li {
    margin-bottom: 0.8rem;
    line-height: 1.7;
    color: #555;
}

/* 卡片内容间距优化 */
.trait-card, .nav-card {
    background: white;
    padding: 2.5rem; /* 增加内边距 */
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e0e0e0;
    margin-bottom: 2rem;
}

.trait-card h3, .nav-card h3 {
    color: #2c5aa0;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
    line-height: 1.4;
}

.trait-card p, .nav-card p {
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.8;
    padding: 0 1rem;
}

/* 列表样式优化 */
.trait-details ul {
    text-align: left;
    margin-top: 1.5rem;
    padding-left: 1.5rem;
}

.trait-details li {
    margin-bottom: 0.8rem;
    line-height: 1.6;
    color: #555;
}

/* 博客页面样式 */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.blog-post {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.blog-post:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.blog-post img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.blog-content {
    padding: 1.5rem;
}

.blog-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #666;
}

.blog-meta .date {
    color: #2c5aa0;
}

.blog-meta .category {
    background: #e8f2ff;
    color: #2c5aa0;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
}

.blog-content h2 {
    margin: 0 0 1rem 0;
    font-size: 1.3rem;
    line-height: 1.4;
}

.blog-content h2 a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease;
}

.blog-content h2 a:hover {
    color: #2c5aa0;
}

.blog-content p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.read-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: #2c5aa0;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.read-more-btn:hover {
    color: #1e3d6f;
}

/* 文章页面样式 */
.blog-article {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.article-header {
    padding: 2rem 2rem 1rem;
}