/* CSS Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 大地色 + 绿色主题 */
    --color-earth-dark: #5D4037;
    --color-earth: #8D6E63;
    --color-earth-light: #D7CCC8;
    --color-green-dark: #2E7D32;
    --color-green: #4CAF50;
    --color-green-light: #C8E6C9;
    --color-cream: #FAF8F5;
    --color-brown: #3E2723;
    --font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-cream);
    color: var(--color-brown);
    line-height: 1.6;
}

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 600px;
    background: linear-gradient(135deg, var(--color-earth-dark) 0%, var(--color-green-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://images.unsplash.com/photo-1583195764036-6ea25f0aa8e5?w=1920&q=80') center/cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: 20px;
}

.hero h1 {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
}

.hero .subtitle {
    font-size: clamp(1rem, 3vw, 1.5rem);
    margin-bottom: 40px;
    opacity: 0.95;
}

.btn {
    display: inline-block;
    padding: 16px 48px;
    background-color: var(--color-green);
    color: #fff;
    text-decoration: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.4);
}

.btn:hover {
    background-color: var(--color-green-dark);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.5);
}

/* Navbar */
.navbar {
    background-color: var(--color-earth-dark);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-green-light);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 40px;
}

.nav-links a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--color-green-light);
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 20px;
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--color-earth-dark);
    margin-bottom: 15px;
}

.section-header p {
    color: var(--color-earth);
    font-size: 1.1rem;
}

/* Products Section */
.products {
    padding: 80px 0;
}

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

.product-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(93, 64, 55, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(93, 64, 55, 0.15);
}

.product-image {
    height: 280px;
    background-size: cover;
    background-position: center;
}

.img-1 {
    background: url('https://images.unsplash.com/photo-1504545102780-26774c1bb073?w=600&q=80') center/cover;
}

.img-2 {
    background: url('https://images.unsplash.com/photo-1599909533601-fc9e133d99dc?w=600&q=80') center/cover;
}

.img-3 {
    background: url('https://images.unsplash.com/photo-1474996803831-7086d6ftr798?w=600&q=80') center/cover;
}

.product-info {
    padding: 30px;
}

.product-info h3 {
    font-size: 1.4rem;
    color: var(--color-earth-dark);
    margin-bottom: 10px;
}

.product-info .price {
    font-size: 1.5rem;
    color: var(--color-green-dark);
    font-weight: 700;
    margin-bottom: 10px;
}

.product-info .desc {
    color: var(--color-earth);
    font-size: 0.95rem;
}

/* About Section */
.about {
    padding: 80px 0;
    background-color: var(--color-green-light);
    margin: 0 -20px;
    padding-left: 20px;
    padding-right: 20px;
    border-radius: 20px;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.05rem;
    color: var(--color-earth-dark);
}

.about-features {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

.feature {
    background: #fff;
    padding: 30px;
    border-radius: 15px;
    border-left: 5px solid var(--color-green);
}

.feature h4 {
    color: var(--color-green-dark);
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.feature p {
    color: var(--color-earth);
}

/* Contact Section */
.contact {
    padding: 80px 0;
    text-align: center;
}

.contact-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
}

.contact-item {
    background: #fff;
    padding: 30px 50px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(93, 64, 55, 0.08);
}

.contact-label {
    display: block;
    font-size: 0.9rem;
    color: var(--color-earth);
    margin-bottom: 8px;
}

.contact-value {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-earth-dark);
}

/* Footer */
footer {
    background-color: var(--color-earth-dark);
    color: var(--color-earth-light);
    text-align: center;
    padding: 40px 20px;
    font-size: 0.95rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

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

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

    main {
        padding: 60px 15px;
    }

    .section-header h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .contact-item {
        padding: 25px 30px;
        width: 100%;
    }
}