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

:root {
    --deep-red: #8B0000;
    --dark-red: #5C0000;
    --black: #1A1A1A;
    --gold: #C5A572;
    --cream: #F5F0E6;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", serif;
    background-color: var(--black);
    color: var(--cream);
    line-height: 1.8;
}

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

/* Hero */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, var(--dark-red) 0%, var(--black) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%238B0000' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

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

.hero h1 {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    color: var(--deep-red);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    letter-spacing: 0.1em;
    margin-bottom: 20px;
}

.subtitle {
    font-size: clamp(1rem, 3vw, 1.5rem);
    color: var(--gold);
    margin-bottom: 40px;
    letter-spacing: 0.2em;
}

.btn {
    display: inline-block;
    padding: 14px 40px;
    background: var(--deep-red);
    color: var(--cream);
    text-decoration: none;
    border: 2px solid var(--gold);
    font-size: 1.1rem;
    letter-spacing: 0.1em;
    transition: all 0.3s ease;
}

.btn:hover {
    background: var(--gold);
    color: var(--black);
}

/* Navbar */
.navbar {
    background: var(--dark-red);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 2px solid var(--gold);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gold);
    letter-spacing: 0.1em;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--cream);
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.3s;
}

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

/* Sections */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    color: var(--gold);
    margin-bottom: 50px;
    position: relative;
}

.section-title::after {
    content: "";
    display: block;
    width: 80px;
    height: 2px;
    background: var(--deep-red);
    margin: 15px auto 0;
}

/* Products */
.products-section {
    background: var(--black);
}

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

.product-card {
    background: linear-gradient(145deg, #2A2A2A, #1A1A1A);
    border: 1px solid var(--deep-red);
    padding: 30px;
    text-align: center;
    transition: transform 0.3s, border-color 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    border-color: var(--gold);
}

.product-img {
    width: 100%;
    height: 160px;
    background: var(--deep-red);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--gold);
    margin-bottom: 20px;
}

.product-card h3 {
    font-size: 1.3rem;
    color: var(--cream);
    margin-bottom: 10px;
}

.price {
    font-size: 1.5rem;
    color: var(--deep-red);
    font-weight: 700;
    margin-bottom: 10px;
}

.desc {
    color: #999;
    font-size: 0.95rem;
}

/* About */
.about-section {
    background: linear-gradient(180deg, var(--black) 0%, #1A0A0A 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text p {
    margin-bottom: 20px;
    color: #CCC;
    text-align: justify;
}

.about-features {
    display: grid;
    gap: 20px;
}

.feature {
    background: linear-gradient(145deg, #2A1A1A, #1A0A0A);
    border-left: 3px solid var(--deep-red);
    padding: 20px;
}

.feature h4 {
    color: var(--gold);
    margin-bottom: 5px;
}

.feature p {
    color: #999;
}

/* Contact */
.contact-section {
    background: var(--black);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info p {
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.contact-info strong {
    color: var(--gold);
}

.contact-cta {
    background: var(--dark-red);
    padding: 30px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    border: 1px solid var(--deep-red);
}

/* Footer */
footer {
    background: var(--dark-red);
    text-align: center;
    padding: 30px 0;
    border-top: 2px solid var(--gold);
    color: #999;
}

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

    .hero {
        height: 80vh;
    }

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

    .section {
        padding: 50px 0;
    }
}

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