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

:root {
    --primary-color: #c0392b;
    --secondary-color: #e74c3c;
    --accent-color: #f39c12;
    --ocean-blue: #1a5276;
    --text-color: #2c3e50;
    --text-light: #555;
    --bg-light: #fdf6e3;
    --white: #ffffff;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 15px 35px rgba(0, 0, 0, 0.2);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
    line-height: 1.8;
    color: var(--text-color);
    background-color: var(--white);
}

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

/* 导航栏样式 */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, #a93226 100%);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo:hover {
    color: var(--accent-color);
    transform: scale(1.02);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 25px;
}

.nav-links a {
    text-decoration: none;
    color: var(--white);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 5px 0;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: var(--transition);
}

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

/* 英雄区域样式 */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: url('../images/hero-original.png') center/cover no-repeat;
    color: var(--white);
    padding-top: 60px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><text y="80" font-size="80">🦞</text></svg>') repeat;
    opacity: 0.05;
    background-size: 100px;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.8rem;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.4rem;
    margin-bottom: 40px;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.btn {
    display: inline-block;
    padding: 15px 45px;
    background: linear-gradient(135deg, var(--accent-color) 0%, #e67e22 100%);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    animation: fadeInUp 0.8s ease 0.4s both;
    box-shadow: 0 4px 15px rgba(243, 156, 18, 0.4);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(243, 156, 18, 0.5);
}

/* 特色区域样式 */
.features {
    padding: 80px 0;
    background: linear-gradient(180deg, var(--white) 0%, var(--bg-light) 100%);
}

.features .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.feature-card {
    background: var(--white);
    padding: 35px 25px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(192, 57, 43, 0.1);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.feature-card .icon {
    font-size: 3rem;
    margin-bottom: 15px;
    display: block;
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 12px;
    font-size: 1.25rem;
}

.feature-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* 文章区域样式 */
.articles {
    padding: 80px 0;
    background-color: var(--white);
}

.articles h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-desc {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 50px;
}

.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.article-card {
    background-color: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid #eee;
}

.article-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.article-image {
    height: 180px;
    width: 100%;
    background-color: #eee;
}

.article-content {
    padding: 25px;
}

.article-category {
    display: inline-block;
    padding: 6px 14px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 12px;
}

.article-content h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 1.2rem;
    line-height: 1.4;
}

.article-content p {
    color: var(--text-light);
    margin-bottom: 18px;
    font-size: 0.95rem;
}

.read-more {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.read-more:hover {
    color: var(--primary-color);
    gap: 10px;
}

/* 关于区域样式 */
.about {
    padding: 80px 0;
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--white) 100%);
}

.about h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.about .section-desc {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 50px;
}

/* 食谱卡片样式 */
.recipe-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.recipe-card {
    background: var(--white);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 4px solid var(--primary-color);
}

.recipe-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.recipe-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.recipe-card h3 {
    color: var(--primary-color);
    margin-bottom: 12px;
    font-size: 1.15rem;
}

.recipe-card p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* 养殖技术样式 */
.breeding-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    max-width: 1000px;
    margin: 0 auto;
}

.breeding-item {
    background: var(--white);
    padding: 25px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.breeding-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.breeding-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.breeding-text h3 {
    color: var(--ocean-blue);
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.breeding-text p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* 联系区域样式 */
.contact {
    padding: 80px 0;
    background: linear-gradient(180deg, var(--white) 0%, var(--bg-light) 100%);
}

.contact h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 1.05rem;
    line-height: 1.8;
}

.stats {
    display: flex;
    justify-content: center;
    gap: 50px;
    margin-top: 40px;
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
    line-height: 1.2;
}

.stat-label {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* 页脚样式 */
.footer {
    background: linear-gradient(135deg, var(--ocean-blue) 0%, #0a1628 100%);
    color: var(--white);
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    margin-bottom: 18px;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-section p {
    opacity: 0.85;
    font-size: 0.95rem;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.85;
    transition: var(--transition);
    font-size: 0.95rem;
}

.footer-section ul a:hover {
    opacity: 1;
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.social-link {
    color: var(--white);
    text-decoration: none;
    opacity: 0.85;
    transition: var(--transition);
    font-size: 0.95rem;
}

.social-link:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    opacity: 0.7;
    font-size: 0.9rem;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 15px;
        padding: 12px 15px;
    }

    .nav-links {
        gap: 15px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

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

    .btn {
        padding: 12px 30px;
        font-size: 1rem;
    }

    .features .container {
        grid-template-columns: 1fr 1fr;
    }

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

    .recipe-grid,
    .breeding-content {
        grid-template-columns: 1fr;
    }

    .stats {
        flex-direction: column;
        gap: 25px;
    }

    .footer-content {
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }
}

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

    .hero h1 {
        font-size: 1.8rem;
    }

    .articles h2,
    .about h2,
    .contact h2 {
        font-size: 1.8rem;
    }
}