:root {
    --rsv-primary: #2c3e50;
    --rsv-primary-dark: #1a252f;
    --rsv-accent: #b87333;
    --rsv-accent-dark: #965c27;
    --rsv-bg: #fcfcfc;
    --rsv-card-bg: #ffffff;
    --rsv-border: #e2e8f0;
    --rsv-text: #334155;
    --rsv-text-serif: "Georgia", "Cambria", "Times New Roman", serif;
    --rsv-sub: #64748b;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--rsv-bg); color: var(--rsv-text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; font-size: 13px; line-height: 1.6; overflow-x: hidden; }
a { color: inherit; text-decoration: none; transition: 0.2s; }

.rsv-topbar { background: #ffffff; border-bottom: 1px solid var(--rsv-border); font-size: 12px; height: 36px; line-height: 36px; color: var(--rsv-sub); }
.rsv-topbar-inner { max-width: 1200px; margin: 0 auto; padding: 0 15px; display: flex; justify-content: flex-end; align-items: center; }

.rsv-header { background: #ffffff; padding: 25px 0; text-align: center; border-bottom: 1px solid var(--rsv-border); }
.rsv-header-inner { max-width: 1200px; margin: 0 auto; padding: 0 15px; display: flex; justify-content: space-between; align-items: center; }
.rsv-logo img { height: 42px; width: auto; max-width: 180px; object-fit: contain; }

.rsv-nav-bar { background: #ffffff; border-bottom: 1px solid var(--rsv-border); }
.rsv-nav-inner { max-width: 1200px; margin: 0 auto; padding: 0 15px; }
.rsv-nav-list { display: flex; list-style: none; flex-wrap: wrap; justify-content: center; }
.rsv-nav-list li a { display: block; padding: 12px 20px; color: var(--rsv-text); font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }
.rsv-nav-list li a:hover, .rsv-nav-list li.active a { color: var(--rsv-accent); }

.rsv-notice { max-width: 1200px; margin: 15px auto 0; padding: 10px 15px; background: #f8fafc; border-left: 4px solid var(--rsv-primary); border-radius: 2px; color: var(--rsv-text); font-size: 13px; }

.rsv-container { max-width: 1200px; margin: 25px auto; padding: 0 15px; min-height: 60vh; }

.rsv-main-layout { display: grid; grid-template-columns: 1fr 300px; gap: 30px; margin-bottom: 30px; }

.rsv-hero-card { background: #ffffff; border: 1px solid var(--rsv-border); border-radius: 4px; padding: 20px; text-align: center; margin-bottom: 25px; }
.rsv-hero-img-box { width: 100%; height: 180px; background: #0f172a; border-radius: 2px; margin-bottom: 15px; display: flex; align-items: center; justify-content: center; }
.rsv-hero-img-box img { max-width: 120px; max-height: 120px; object-fit: contain; }
.rsv-hero-title { font-family: var(--rsv-text-serif); font-size: 22px; font-weight: bold; color: #0f172a; margin-bottom: 8px; }

.rsv-sidebar-widget { background: #ffffff; border: 1px solid var(--rsv-border); border-radius: 4px; padding: 20px; margin-bottom: 25px; }
.rsv-widget-title { font-family: var(--rsv-text-serif); font-size: 14px; font-weight: bold; color: #000000; text-transform: uppercase; letter-spacing: 1px; border-bottom: 1px solid #000000; padding-bottom: 6px; margin-bottom: 15px; text-align: center; }

.rsv-box { background: var(--rsv-card-bg); border: 1px solid var(--rsv-border); margin-bottom: 20px; padding: 18px; border-radius: 4px; }
.rsv-box-head { display: flex; justify-content: space-between; align-items: center; padding-bottom: 10px; margin-bottom: 15px; border-bottom: 1px solid var(--rsv-border); }
.rsv-box-title { font-family: var(--rsv-text-serif); font-size: 16px; font-weight: bold; color: #0f172a; }

.rsv-grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.rsv-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; }
.rsv-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.rsv-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; }

.rsv-card-item { border: 1px solid var(--rsv-border); padding: 12px; text-align: center; background: #ffffff; border-radius: 4px; transition: 0.2s; }
.rsv-card-item:hover { border-color: var(--rsv-primary); transform: translateY(-2px); box-shadow: 0 4px 10px rgba(0,0,0,0.04); }
.rsv-card-img-box { width: 50px; height: 50px; margin: 0 auto 8px; display: flex; align-items: center; justify-content: center; background: #f8fafc; border-radius: 4px; border: 1px solid var(--rsv-border); }
.rsv-card-img-box img { max-width: 40px; max-height: 40px; object-fit: contain; }
.rsv-card-name { font-size: 13px; font-weight: 600; height: 36px; overflow: hidden; margin-bottom: 6px; color: var(--rsv-text); }
.rsv-card-price { font-size: 15px; font-weight: bold; color: var(--rsv-accent); margin-bottom: 8px; }
.rsv-btn-buy { display: block; width: 100%; padding: 5px 0; background: var(--rsv-primary); color: #ffffff; font-size: 12px; font-weight: bold; text-align: center; border-radius: 2px; }
.rsv-btn-buy:hover { background: var(--rsv-primary-dark); }

.rsv-row-item { display: flex; align-items: center; justify-content: space-between; padding: 9px 8px; border-bottom: 1px dashed var(--rsv-border); font-size: 13px; }
.rsv-row-item:last-child { border-bottom: none; }

.rsv-detail-layout { display: flex; gap: 30px; background: #ffffff; border: 1px solid var(--rsv-border); padding: 30px; border-radius: 4px; }
.rsv-detail-media { flex: 0 0 260px; text-align: center; }
.rsv-detail-img-wrap { width: 220px; height: 220px; margin: 0 auto 12px; border: 1px solid var(--rsv-border); border-radius: 4px; display: flex; align-items: center; justify-content: center; background: #f8fafc; padding: 10px; }
.rsv-detail-img-wrap img { max-width: 180px; max-height: 180px; object-fit: contain; }
.rsv-detail-info { flex: 1; }
.rsv-detail-name { font-family: var(--rsv-text-serif); font-size: 22px; font-weight: bold; color: var(--rsv-text); margin-bottom: 15px; padding-bottom: 10px; border-bottom: 1px solid var(--rsv-border); }
.rsv-detail-meta-box { background: #f8fafc; border: 1px solid var(--rsv-border); padding: 12px 18px; border-radius: 4px; margin-bottom: 20px; display: flex; justify-content: space-between; align-items: center; }

.rsv-form-group { margin-bottom: 15px; }
.rsv-form-label { display: block; font-weight: bold; margin-bottom: 6px; font-size: 13px; color: #475569; }
.rsv-input { width: 100%; height: 38px; background: #ffffff; border: 1px solid var(--rsv-border); border-radius: 2px; padding: 0 12px; outline: none; font-size: 13px; }
.rsv-input:focus { border-color: var(--rsv-primary); }
.rsv-btn-submit { width: 100%; height: 44px; background: var(--rsv-accent); color: #ffffff; font-size: 15px; font-weight: bold; border: none; border-radius: 2px; cursor: pointer; transition: 0.2s; }
.rsv-btn-submit:hover { background: var(--rsv-accent-dark); }

.rsv-footer { background: #ffffff; border-top: 1px solid var(--rsv-border); color: var(--rsv-sub); padding: 35px 15px; text-align: center; margin-top: 40px; font-size: 13px; }
.rsv-footer-links { margin-bottom: 10px; }
.rsv-footer-links a { color: var(--rsv-text); margin: 0 10px; font-weight: 500; }
.rsv-footer-links a:hover { color: var(--rsv-accent); }

@media (max-width: 992px) {
    .rsv-main-layout { grid-template-columns: 1fr; }
    .rsv-grid-5 { grid-template-columns: repeat(3, 1fr); }
    .rsv-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .rsv-detail-layout { flex-direction: column; }
    .rsv-detail-media { flex: 1; }
}
@media (max-width: 640px) {
    .rsv-grid-5, .rsv-grid-4, .rsv-grid-2 { grid-template-columns: 1fr; }
    .rsv-nav-list li a { padding: 9px 12px; font-size: 12px; }
}