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

:root {
    --gray-1: #f5f5f5;
    --gray-2: #e8e8e8;
    --gray-3: #d0d0d0;
    --gray-4: #999;
    --gray-5: #666;
    --gray-6: #333;
    --gray-7: #1a1a1a;
    --bronze: #8B7355;
    --bronze-light: #a69076;
    --bronze-dark: #6b5740;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    background-color: var(--gray-1);
    color: var(--gray-6);
    line-height: 1.6;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--gray-7) 0%, var(--gray-6) 100%);
    color: #fff;
    padding: 120px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, var(--bronze-dark) 0%, transparent 50%);
    opacity: 0.3;
}

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

.hero h1 {
    font-size: 3rem;
    font-weight: 300;
    letter-spacing: 8px;
    margin-bottom: 20px;
    color: var(--bronze-light);
}

.subtitle {
    font-size: 1.2rem;
    letter-spacing: 4px;
    color: var(--gray-3);
    margin-bottom: 40px;
}

.btn {
    display: inline-block;
    padding: 14px 40px;
    border: 1px solid var(--bronze);
    color: var(--bronze-light);
    text-decoration: none;
    letter-spacing: 2px;
    transition: all 0.3s;
}

.btn:hover {
    background: var(--bronze);
    color: #fff;
}

/* Intro Section */
.intro {
    padding: 80px 20px;
    background: #fff;
    text-align: center;
}

.intro h2 {
    font-size: 2rem;
    color: var(--bronze);
    margin-bottom: 30px;
    letter-spacing: 4px;
}

.intro p {
    max-width: 700px;
    margin: 0 auto;
    color: var(--gray-5);
    font-size: 1.1rem;
}

/* Products Section */
.products {
    padding: 80px 20px;
    background: var(--gray-1);
}

.products h2 {
    text-align: center;
    font-size: 2rem;
    color: var(--bronze);
    margin-bottom: 50px;
    letter-spacing: 4px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: #fff;
    padding: 30px;
    text-align: center;
    border: 1px solid var(--gray-2);
    transition: all 0.3s;
}

.product-card:hover {
    border-color: var(--bronze);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.product-img {
    height: 180px;
    background: linear-gradient(135deg, var(--gray-3) 0%, var(--gray-2) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-5);
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.product-card h3 {
    color: var(--gray-7);
    font-weight: 500;
    margin-bottom: 10px;
}

.price {
    color: var(--bronze);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.desc {
    color: var(--gray-4);
    font-size: 0.9rem;
}

/* Features Section */
.features {
    padding: 80px 20px;
    background: var(--gray-7);
    color: #fff;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.feature h3 {
    color: var(--bronze-light);
    margin-bottom: 10px;
    font-weight: 400;
    letter-spacing: 2px;
}

.feature p {
    color: var(--gray-4);
}

/* Contact Section */
.contact {
    padding: 80px 20px;
    background: #fff;
    text-align: center;
}

.contact h2 {
    color: var(--bronze);
    margin-bottom: 30px;
    letter-spacing: 4px;
}

.contact p {
    color: var(--gray-5);
    margin-bottom: 10px;
}

/* Footer */
footer {
    background: var(--gray-7);
    color: var(--gray-4);
    text-align: center;
    padding: 30px 20px;
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
        letter-spacing: 4px;
    }

    .subtitle {
        font-size: 1rem;
        letter-spacing: 2px;
    }

    .intro h2,
    .products h2,
    .contact h2 {
        font-size: 1.5rem;
    }

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

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

@media (max-width: 480px) {
    .hero {
        padding: 80px 20px;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

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