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

:root {
    --primary-color: #2d8659;
    --secondary-color: #f4a261;
    --text-color: #333;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* 头部导航 - 移动端优先 */
.header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
}

.nav {
    padding: 1rem 0;
}

.nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.1rem;
    color: var(--primary-color);
    font-weight: bold;
    white-space: nowrap;
    line-height: 1.2;
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    transition: var(--transition);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* 移动端菜单展开 */
.nav-menu.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--white);
    box-shadow: var(--shadow);
    padding: 1rem;
    gap: 1rem;
}

/* 主横幅 */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, #4a9d7a 100%);
    color: var(--white);
    padding: 4rem 1rem;
    text-align: center;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    font-size: 2rem;
    margin-bottom: 1rem;
    font-weight: bold;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.cta-button {
    display: inline-block;
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 0.875rem 2rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(244, 162, 97, 0.3);
}

.cta-button:hover {
    background-color: #e8924f;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(244, 162, 97, 0.4);
}

/* 产品展示 */
.products {
    padding: 4rem 1rem;
    background-color: var(--bg-light);
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
    font-weight: bold;
}

.products-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.product-card {
    background-color: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.product-image-wrapper {
    width: 100%;
    height: 250px;
    overflow: hidden;
    background-color: #f0f0f0;
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-card:hover .product-image {
    transform: scale(1.05);
}

.product-info {
    padding: 1.5rem;
}

.product-name {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.product-description {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.product-details {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #e0e0e0;
}

.product-details p {
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

.product-nutrition,
.product-method,
.product-season {
    margin-bottom: 0.5rem;
}

/* 种植优势 */
.advantages {
    padding: 4rem 1rem;
    background-color: var(--white);
}

.advantages-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.advantage-card {
    background-color: var(--bg-light);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

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

.advantage-icon {
    margin-bottom: 1rem;
}

.advantage-icon img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
}

.advantage-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.advantage-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* 关于我们 */
.about {
    padding: 4rem 1rem;
    background-color: var(--bg-light);
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.about-image {
    width: 100%;
}

.about-img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.about-text h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.about-text p {
    margin-bottom: 1rem;
    color: var(--text-light);
    line-height: 1.8;
}

.features-list {
    list-style: none;
    margin-top: 1.5rem;
}

.features-list li {
    padding: 0.5rem 0;
    color: var(--text-color);
    font-size: 1.05rem;
}

/* 种植过程 */
.process-section {
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 2px solid #e0e0e0;
}

.subsection-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.process-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.process-step {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    position: relative;
}

.step-number {
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.process-step h4 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.process-step p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.process-step img {
    width: 100%;
    max-width: 200px;
    height: auto;
    border-radius: 8px;
    margin-top: 1rem;
}

/* 客户评价 */
.testimonials {
    padding: 4rem 1rem;
    background-color: var(--white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.testimonial-card {
    background-color: var(--bg-light);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.testimonial-content {
    margin-bottom: 1.5rem;
}

.testimonial-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-color);
    font-style: italic;
    position: relative;
    padding-left: 1.5rem;
}

.testimonial-text::before {
    content: '"';
    font-size: 3rem;
    color: var(--primary-color);
    position: absolute;
    left: 0;
    top: -10px;
    opacity: 0.3;
}

.testimonial-author {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.testimonial-author strong {
    color: var(--primary-color);
    font-size: 1.1rem;
}

.testimonial-author span {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 常见问题 */
.faq {
    padding: 4rem 1rem;
    background-color: var(--bg-light);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--white);
    padding: 1.5rem;
    margin-bottom: 1rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-hover);
}

.faq-question {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.faq-answer {
    color: var(--text-light);
    line-height: 1.8;
    padding-left: 1rem;
    border-left: 3px solid var(--secondary-color);
}

/* 联系我们 */
.contact {
    padding: 4rem 1rem;
    background-color: var(--white);
}

.contact-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-info h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.contact-info p {
    margin-bottom: 1rem;
    color: var(--text-light);
    line-height: 1.8;
}

.contact-details {
    margin-top: 1.5rem;
}

.contact-details p {
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.contact-image {
    width: 100%;
}

.contact-img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

/* 页脚 */
.footer {
    background-color: var(--text-color);
    color: var(--white);
    padding: 3rem 1rem 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--white);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
    font-size: 0.95rem;
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom p {
    margin-bottom: 0.5rem;
    opacity: 0.9;
    font-size: 0.9rem;
}

/* 平板设备 (768px及以上) */
@media (min-width: 768px) {
    html {
        font-size: 17px;
    }

    .nav-menu {
        display: flex;
    }

    .mobile-menu-toggle {
        display: none;
    }

    .logo {
        font-size: 1.3rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-steps {
        grid-template-columns: repeat(2, 1fr);
    }

    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-content {
        flex-direction: row;
        align-items: center;
    }

    .about-image {
        flex: 1;
    }

    .about-text {
        flex: 1;
    }

    .contact-content {
        flex-direction: row;
        align-items: center;
    }

    .contact-info {
        flex: 1;
    }

    .contact-image {
        flex: 1;
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 桌面设备 (1024px及以上) */
@media (min-width: 1024px) {
    html {
        font-size: 18px;
    }

    .hero {
        min-height: 70vh;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

    .logo {
        font-size: 1.5rem;
    }

    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .advantages-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .process-steps {
        grid-template-columns: repeat(4, 1fr);
    }

    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .section-title {
        font-size: 2.5rem;
    }

    .product-image-wrapper {
        height: 300px;
    }

    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 大屏幕 (1200px及以上) */
@media (min-width: 1200px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2.5rem;
    }
}

/* 性能优化 - 图片懒加载样式 */
img {
    display: block;
    max-width: 100%;
    height: auto;
}

/* 图片加载占位 */
.product-image-wrapper,
.about-image,
.contact-image {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* 减少动画以提升性能 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}