/* ===== YXY® Boutique Aesthetic - Domestic Edition ===== */
:root {
    --yxy-gold: #c5a059;
    --yxy-black: #000000;
    --yxy-onyx: #111111;
    --yxy-marble: #f4f4f4;
    --yxy-border: rgba(0,0,0,0.08);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { 
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, sans-serif; 
    color: var(--yxy-onyx); 
    background: #fff; 
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container { max-width: 1400px; margin: 0 auto; padding: 0 40px; }

/* Header */
.header { background: #fff; border-bottom: 1px solid var(--yxy-border); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 80px; }
.logo { font-family: "Times New Roman", serif; font-weight: 400; font-size: 1.8rem; letter-spacing: 0.2em; color: var(--yxy-black); text-transform: uppercase; }
.logo span { color: var(--yxy-gold); }
.nav { display: flex; gap: 40px; }
.nav-link { color: var(--yxy-onyx); font-size: 11px; letter-spacing: 0.3em; text-transform: uppercase; opacity: 0.6; transition: opacity 0.3s; }
.nav-link:hover, .nav-link.active { opacity: 1; color: var(--yxy-gold); }

/* Hero */
.hero { background: var(--yxy-marble); padding: 120px 0; text-align: center; }
.hero h1 { font-size: 3rem; font-weight: 300; letter-spacing: 0.3em; text-transform: uppercase; margin-bottom: 24px; color: var(--yxy-black); }
.hero p { font-size: 14px; letter-spacing: 0.1em; color: #666; max-width: 600px; margin: 0 auto 40px; line-height: 2; }

/* Buttons */
.btn { display: inline-block; padding: 18px 48px; font-size: 10px; letter-spacing: 0.4em; text-transform: uppercase; border: none; cursor: pointer; transition: all 0.4s; border-radius: 0; }
.btn-primary { background: var(--yxy-black); color: #fff; }
.btn-primary:hover { background: var(--yxy-gold); color: #fff; transform: translateY(-2px); }
.btn-outline { background: transparent; border: 1px solid var(--yxy-black); color: var(--yxy-black); }
.btn-outline:hover { background: var(--yxy-black); color: #fff; }

/* Product Grid */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 40px; }
.product-card { border: none; background: #fff; }
.product-image { height: 350px; background: var(--yxy-marble); overflow: hidden; position: relative; }
.product-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s; }
.product-card:hover .product-image img { transform: scale(1.05); }
.product-info { padding: 24px 0; text-align: left; }
.product-name { font-size: 13px; font-weight: 400; letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 12px; }
.product-price { font-size: 14px; font-weight: 500; color: var(--yxy-gold); }
.price-original { font-size: 11px; color: #999; text-decoration: line-through; margin-left: 10px; opacity: 0.5; }

/* Footer */
.footer { background: #fff; padding: 80px 0; border-top: 1px solid var(--yxy-border); }
.footer h4 { font-size: 11px; letter-spacing: 0.3em; text-transform: uppercase; margin-bottom: 24px; color: var(--yxy-gold); }
.footer p { font-size: 12px; color: #999; line-height: 2; letter-spacing: 0.05em; }

/* Checkout & Form */
.form-input { border: 1px solid #ddd; border-radius: 0; padding: 12px 16px; font-size: 13px; }
.form-input:focus { border-color: var(--yxy-gold); outline: none; }
.payment-option { border-radius: 0; border: 1px solid #ddd; }
.payment-option:has(input:checked) { border-color: var(--yxy-gold); background: var(--yxy-marble); }

@media (max-width: 768px) {
    .container { padding: 0 20px; }
    .hero h1 { font-size: 1.8rem; }
    .product-grid { grid-template-columns: repeat(2, 1fr); gap: 15px; }
    .product-image { height: 200px; }
    .nav { display: none; }
}