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

:root {
    --primary-color: #c41e3a;
    --secondary-color: #8b0000;
    --accent-color: #ff6b6b;
    --dark-color: #1a1a1a;
    --light-color: #f8f9fa;
    --text-color: #333;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo h1 {
    font-size: 28px;
    color: var(--primary-color);
    font-weight: bold;
    margin-bottom: -5px;
}

.logo p {
    font-size: 11px;
    color: var(--secondary-color);
    letter-spacing: 2px;
    font-weight: 300;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 5px;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    padding: 10px 18px;
    display: block;
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition);
    border-radius: 8px;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
    background: rgba(196, 30, 58, 0.05);
}

/* 下拉菜单 - 优化版，防止误触消失 */
.dropdown {
    position: relative;
}

.dropdown-content {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    min-width: 200px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    border-radius: var(--border-radius);
    padding: 10px 0;
    margin-top: 10px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0s linear 0.6s;
}

/* 增加伪元素扩大hover区域，填充导航项和菜单之间的间隙 */
.dropdown-content::before {
    content: '';
    position: absolute;
    top: -15px;
    left: -10px;
    right: -10px;
    height: 20px;
    background: transparent;
}

/* 悬停时显示菜单 */
.dropdown:hover .dropdown-content,
.dropdown-content:hover {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
    transition-delay: 0s, 0s, 0s;
}

.dropdown-content a {
    padding: 12px 20px;
    border-radius: 0;
}

.dropdown-content a:hover {
    background: rgba(196, 30, 58, 0.08);
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    margin: 3px 0;
    transition: var(--transition);
}

/* 英雄区域 */
.hero {
    position: relative;
    height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('images/farming/farming_4.jpg') center/cover;
    opacity: 0.3;
    animation: zoomIn 20s infinite alternate;
}

@keyframes zoomIn {
    from {
        transform: scale(1);
    }
    to {
        transform: scale(1.1);
    }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(196, 30, 58, 0.8), rgba(139, 0, 0, 0.7));
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    animation: fadeInUp 1s ease;
}

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

.hero-title {
    font-size: 56px;
    font-weight: bold;
    margin-bottom: 20px;
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 22px;
    margin-bottom: 40px;
    opacity: 0.95;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-bottom: 40px;
}

.stat-item h3 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 5px;
}

.stat-item p {
    font-size: 16px;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    padding: 16px 48px;
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-size: 18px;
    font-weight: bold;
    transition: var(--transition);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator span {
    display: block;
    width: 30px;
    height: 50px;
    border: 2px solid white;
    border-radius: 25px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: white;
    border-radius: 50%;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
}

/* 通用区块样式 */
section {
    padding: 100px 0;
}

.section-title {
    font-size: 42px;
    text-align: center;
    margin-bottom: 15px;
    color: var(--dark-color);
    font-weight: bold;
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: #666;
    margin-bottom: 60px;
}

/* 核心优势 */
.advantages {
    background: var(--light-color);
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.advantage-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.card-icon {
    font-size: 60px;
    margin-bottom: 20px;
}

.advantage-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.advantage-card p {
    color: #666;
    line-height: 1.8;
}

/* 产品展示 */
.product-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.category-image {
    position: relative;
    height: 400px;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.category-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.category-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 30px;
    color: white;
}

.category-overlay h3 {
    font-size: 28px;
    margin-bottom: 10px;
}

.category-overlay p {
    margin-bottom: 20px;
    opacity: 0.9;
}

.category-link {
    color: white;
    text-decoration: none;
    font-weight: bold;
    transition: var(--transition);
}

.category-image:hover img {
    transform: scale(1.1);
}

.category-link:hover {
    color: var(--accent-color);
}

/* 生产流程 */
.production-process {
    background: var(--light-color);
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.process-step {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.process-step:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.step-number {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    z-index: 1;
}

.step-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.step-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.process-step h3 {
    padding: 20px 25px 10px;
    font-size: 22px;
    color: var(--primary-color);
}

.process-step p {
    padding: 0 25px 20px;
    color: #666;
    line-height: 1.8;
}

.step-link {
    display: block;
    padding: 15px 25px;
    background: var(--light-color);
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
    transition: var(--transition);
}

.step-link:hover {
    background: var(--primary-color);
    color: white;
}

/* 质量保障 */
.quality-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.quality-text h2 {
    font-size: 38px;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.quality-intro {
    font-size: 18px;
    color: #666;
    margin-bottom: 30px;
    line-height: 1.8;
}

.quality-list {
    list-style: none;
    margin-bottom: 30px;
}

.quality-list li {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
}

.list-icon {
    width: 30px;
    height: 30px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-weight: bold;
}

.quality-list h4 {
    font-size: 18px;
    margin-bottom: 5px;
    color: var(--dark-color);
}

.quality-list p {
    color: #666;
    line-height: 1.6;
}

.quality-button {
    display: inline-block;
    padding: 14px 40px;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: var(--transition);
}

.quality-button:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.quality-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.quality-images img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

/* 企业实力 */
.company-strength {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.company-strength .section-title {
    color: white;
}

.strength-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.strength-item {
    text-align: center;
    padding: 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.strength-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.strength-icon {
    font-size: 50px;
    margin-bottom: 15px;
}

.strength-item h3 {
    font-size: 18px;
    margin-bottom: 10px;
    opacity: 0.9;
}

.strength-number {
    font-size: 42px;
    font-weight: bold;
    margin-bottom: 10px;
}

.strength-desc {
    opacity: 0.85;
}

/* 新闻动态 */
.news-section {
    background: var(--light-color);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.news-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.news-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-card:hover .news-image img {
    transform: scale(1.1);
}

.news-tag {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--primary-color);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 14px;
}

.news-content {
    padding: 25px;
}

.news-content h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--dark-color);
    line-height: 1.4;
}

.news-date {
    color: #999;
    font-size: 14px;
    margin-bottom: 15px;
}

.news-excerpt {
    color: #666;
    line-height: 1.8;
    margin-bottom: 15px;
}

.news-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
    transition: var(--transition);
}

.news-link:hover {
    color: var(--secondary-color);
}

/* 联系CTA */
.contact-cta {
    background: linear-gradient(135deg, rgba(196, 30, 58, 0.05), rgba(139, 0, 0, 0.05));
    text-align: center;
}

.cta-content h2 {
    font-size: 42px;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.cta-content p {
    font-size: 20px;
    color: #666;
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.cta-btn {
    padding: 16px 48px;
    text-decoration: none;
    border-radius: 50px;
    font-size: 18px;
    font-weight: bold;
    transition: var(--transition);
}

.cta-btn.primary {
    background: var(--primary-color);
    color: white;
}

.cta-btn.primary:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
}

.cta-btn.secondary {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.cta-btn.secondary:hover {
    background: var(--primary-color);
    color: white;
}

/* 页脚 */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--accent-color);
}

.footer-col p {
    line-height: 1.8;
    opacity: 0.8;
}

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

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-col ul li a:hover {
    opacity: 1;
    color: var(--accent-color);
}

.contact-info li {
    opacity: 0.8;
    line-height: 2;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.6;
}

/* 响应式设计 */
@media (max-width: 968px) {
    .nav-menu {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .quality-content {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 32px;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 20px;
    }

    .product-categories,
    .news-grid {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
    }
}