:root {
    --stl-primary: #ff4500;
    --stl-primary-dark: #cc3700;
    --stl-accent: #ff6347;
    --stl-bg: #050505;
    --stl-card-bg: #141414;
    --stl-card-sub: #1e1e1e;
    --stl-border: #2a2a2a;
    --stl-text: #e2e8f0;
    --stl-text-bright: #ffffff;
    --stl-sub: #94a3b8;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--stl-bg); color: var(--stl-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; }

.stl-topbar { background: #000000; border-bottom: 1px solid var(--stl-border); font-size: 12px; height: 36px; line-height: 36px; color: var(--stl-sub); }
.stl-topbar-inner { max-width: 1280px; margin: 0 auto; padding: 0 15px; display: flex; justify-content: flex-end; align-items: center; }

.stl-header { background: #0a0a0a; padding: 20px 0; border-bottom: 1px solid var(--stl-border); }
.stl-header-inner { max-width: 1280px; margin: 0 auto; padding: 0 15px; display: flex; justify-content: space-between; align-items: center; }
.stl-logo img { height: 42px; width: auto; max-width: 180px; object-fit: contain; filter: brightness(1.5); }

.stl-nav-bar { background: #141414; border-bottom: 2px solid var(--stl-primary); }
.stl-nav-inner { max-width: 1280px; margin: 0 auto; padding: 0 15px; }
.stl-nav-list { display: flex; list-style: none; flex-wrap: wrap; }
.stl-nav-list li a { display: block; padding: 14px 22px; color: var(--stl-text-bright); font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }
.stl-nav-list li a:hover, .stl-nav-list li.active a { color: var(--stl-primary); }

.stl-notice { max-width: 1280px; margin: 15px auto 0; padding: 10px 15px; background: rgba(255, 69, 0, 0.1); border-left: 4px solid var(--stl-primary); border-radius: 4px; color: var(--stl-primary); font-size: 13px; }

.stl-container { max-width: 1280px; margin: 25px auto; padding: 0 15px; min-height: 60vh; }

.stl-hero-banner { background: #111111; color: #ffffff; padding: 50px 25px; text-align: center; border-radius: 12px; margin-bottom: 40px; border: 1px solid var(--stl-border); position: relative; overflow: hidden; }
.stl-hero-banner::before { content: ""; position: absolute; top: -50px; left: -50px; width: 100px; height: 100px; background: var(--stl-primary); filter: blur(60px); opacity: 0.4; }
.stl-hero-banner h1 { font-size: 34px; font-weight: 900; letter-spacing: 1px; margin-bottom: 10px; color: #ffffff; }
.stl-hero-banner p { font-size: 14px; color: var(--stl-sub); text-transform: uppercase; letter-spacing: 2px; }

.stl-section-head { text-align: center; margin: 50px 0 25px; }
.stl-section-title { font-size: 24px; font-weight: 900; color: var(--stl-text-bright); }
.stl-section-title span { color: var(--stl-primary); }
.stl-section-sub { font-size: 12px; color: var(--stl-sub); margin-bottom: 5px; text-transform: uppercase; letter-spacing: 2px; }

.stl-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stl-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.stl-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }

.stl-icon-card { background: var(--stl-card-bg); border-radius: 12px; padding: 25px 20px; transition: 0.3s; border: 1px solid var(--stl-border); display: flex; flex-direction: column; align-items: flex-start; text-align: left; }
.stl-icon-card:hover { border-color: var(--stl-primary); transform: translateY(-5px); box-shadow: 0 10px 20px rgba(255,69,0,0.15); }
.stl-icon-wrap { width: 50px; height: 50px; background: var(--stl-card-sub); border-radius: 12px; margin-bottom: 15px; display: flex; align-items: center; justify-content: center; border: 1px solid var(--stl-border); }
.stl-icon-wrap img { max-width: 28px; max-height: 28px; filter: invert(0.6) sepia(1) saturate(5) hue-rotate(340deg); }

.stl-promo-card { background: var(--stl-card-bg); border: 1px solid var(--stl-border); border-radius: 12px; display: flex; align-items: center; padding: 20px; gap: 20px; transition: 0.3s; }
.stl-promo-card:hover { border-color: var(--stl-primary); }

.stl-model-card { background: var(--stl-card-bg); border: 1px solid var(--stl-border); border-radius: 12px; padding: 15px; transition: 0.3s; }
.stl-model-card:hover { border-color: var(--stl-primary); box-shadow: 0 10px 20px rgba(0,0,0,0.5); }
.stl-model-img { width: 100%; height: 180px; background: var(--stl-card-sub); border-radius: 8px; margin-bottom: 15px; display: flex; align-items: center; justify-content: center; }
.stl-model-img img { max-width: 120px; max-height: 120px; object-fit: contain; }

.stl-type-card { position: relative; border-radius: 12px; overflow: hidden; height: 160px; display: flex; align-items: center; padding: 25px; border: 1px solid var(--stl-border); background: var(--stl-card-sub); transition: 0.3s; }
.stl-type-card:hover { border-color: var(--stl-primary); }
.stl-type-img { position: absolute; right: 10px; bottom: 10px; width: 80px; height: 80px; opacity: 0.8; }
.stl-type-img img { width: 100%; height: 100%; object-fit: contain; }

.stl-card-item { background: var(--stl-card-bg); border: 1px solid var(--stl-border); border-radius: 8px; padding: 16px; text-align: center; transition: 0.2s; position: relative; }
.stl-card-item:hover { border-color: var(--stl-primary); transform: translateY(-3px); box-shadow: 0 8px 20px rgba(255,69,0,0.1); }
.stl-card-img-box { width: 100%; height: 120px; background: var(--stl-card-sub); border-radius: 6px; margin-bottom: 12px; display: flex; align-items: center; justify-content: center; }
.stl-card-img-box img { max-width: 75px; max-height: 75px; object-fit: contain; }
.stl-card-name { font-size: 14px; font-weight: 700; color: var(--stl-text-bright); height: 40px; overflow: hidden; margin-bottom: 8px; }
.stl-card-price { font-size: 18px; font-weight: 900; color: var(--stl-primary); margin-bottom: 12px; font-family: monospace; }
.stl-btn-buy { display: inline-block; width: 100%; padding: 8px 0; background: var(--stl-primary); color: #ffffff; font-size: 13px; font-weight: 800; text-align: center; border-radius: 20px; text-transform: uppercase; }
.stl-btn-buy:hover { background: var(--stl-primary-dark); }

.stl-news-card { background: var(--stl-card-bg); border: 1px solid var(--stl-border); border-radius: 12px; overflow: hidden; transition: 0.3s; }
.stl-news-card:hover { border-color: var(--stl-primary); }
.stl-news-img { width: 100%; height: 140px; background: var(--stl-card-sub); position: relative; display: flex; align-items: center; justify-content: center; }
.stl-news-img img { max-width: 100px; max-height: 100px; object-fit: contain; }
.stl-news-badge { position: absolute; bottom: -12px; left: 20px; background: var(--stl-primary); color: #ffffff; font-size: 11px; font-weight: bold; padding: 4px 10px; border-radius: 4px; }
.stl-news-body { padding: 25px 20px 20px; }

.stl-box { background: var(--stl-card-bg); border: 1px solid var(--stl-border); margin-bottom: 30px; padding: 25px; border-radius: 12px; }
.stl-row-item { display: flex; align-items: center; justify-content: space-between; padding: 12px 10px; border-bottom: 1px solid var(--stl-border); font-size: 14px; }
.stl-row-item:last-child { border-bottom: none; }

.stl-detail-layout { display: flex; gap: 35px; background: var(--stl-card-bg); border: 1px solid var(--stl-border); padding: 35px; border-radius: 12px; }
.stl-detail-media { flex: 0 0 300px; text-align: center; }
.stl-detail-img-wrap { width: 260px; height: 260px; margin: 0 auto 15px; border: 1px solid var(--stl-border); border-radius: 8px; display: flex; align-items: center; justify-content: center; background: var(--stl-card-sub); padding: 15px; }
.stl-detail-img-wrap img { max-width: 200px; max-height: 200px; object-fit: contain; }
.stl-detail-info { flex: 1; }
.stl-detail-name { font-size: 24px; font-weight: 900; color: var(--stl-text-bright); margin-bottom: 15px; padding-bottom: 15px; border-bottom: 1px solid var(--stl-border); }
.stl-detail-meta-box { background: var(--stl-card-sub); border: 1px solid var(--stl-border); padding: 15px 20px; border-radius: 8px; margin-bottom: 25px; display: flex; justify-content: space-between; align-items: center; }

.stl-form-group { margin-bottom: 18px; }
.stl-form-label { display: block; font-weight: 700; margin-bottom: 8px; font-size: 13px; color: var(--stl-sub); text-transform: uppercase; }
.stl-input { width: 100%; height: 44px; background: var(--stl-card-sub); border: 1px solid var(--stl-border); border-radius: 6px; padding: 0 15px; outline: none; font-size: 14px; color: #ffffff; }
.stl-input:focus { border-color: var(--stl-primary); }
.stl-btn-submit { width: 100%; height: 48px; background: var(--stl-primary); color: #ffffff; font-size: 16px; font-weight: 900; border: none; border-radius: 6px; cursor: pointer; transition: 0.2s; text-transform: uppercase; }
.stl-btn-submit:hover { background: var(--stl-primary-dark); }

.stl-footer { background: #000000; color: #64748b; padding: 40px 15px; text-align: center; margin-top: 50px; font-size: 13px; border-top: 1px solid var(--stl-border); }
.stl-footer-links { margin-bottom: 15px; }
.stl-footer-links a { color: var(--stl-text); margin: 0 12px; font-weight: 600; text-transform: uppercase; font-size: 12px; }
.stl-footer-links a:hover { color: var(--stl-primary); }

@media (max-width: 992px) {
    .stl-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .stl-grid-3 { grid-template-columns: 1fr; }
    .stl-grid-2 { grid-template-columns: 1fr; }
    .stl-detail-layout { flex-direction: column; }
    .stl-detail-media { flex: 1; }
}
@media (max-width: 640px) {
    .stl-grid-4 { grid-template-columns: 1fr; }
    .stl-nav-list li a { padding: 10px 12px; font-size: 13px; }
}