:root {
  --orange: #E8490F;
  --orange-hover: #d13d08;
  --orange-light: #ff6b35;
  --orange-glow: #fff3ee;
  --orange-subtle: #fef7f3;
  --dark: #111827;
  --text: #1f2937;
  --text-secondary: #6b7280;
  --text-light: #9ca3af;
  --surface: #ffffff;
  --bg: #fafaf8;
  --border: #e5e7eb;
  --border-light: #f3f4f6;
  --success: #059669;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --container: 1200px;
  --nav-h: 72px;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html, body { overflow-x: hidden; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.6; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* NAV */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h); display: flex; align-items: center;
  background: rgba(17,24,39,0.97); box-shadow: 0 2px 20px rgba(0,0,0,0.15);
}
.nav .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo img { height: 44px; width: auto; }
.nav-logo-text { font-size: 1.25rem; font-weight: 800; color: #fff; letter-spacing: -0.02em; }
.nav-logo-text span { color: var(--orange); }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a { color: rgba(255,255,255,0.85); font-size: 0.9rem; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: #fff; }
.nav-phone { display: flex; align-items: center; gap: 6px; color: #fff; font-weight: 600; font-size: 0.9rem; }
.nav-phone svg { width: 16px; height: 16px; }
.nav-menu-btn { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; }
.nav-menu-btn span { display: block; width: 22px; height: 2px; background: #fff; position: relative; transition: 0.3s; }
.nav-menu-btn span::before, .nav-menu-btn span::after { content: ''; position: absolute; width: 22px; height: 2px; background: #fff; transition: 0.3s; }
.nav-menu-btn span::before { top: -7px; }
.nav-menu-btn span::after { top: 7px; }

/* MOBILE NAV */
.mobile-nav { display: none; position: fixed; top: var(--nav-h); left: 0; right: 0; background: var(--dark); z-index: 99; padding: 20px 24px; flex-direction: column; gap: 16px; }
.mobile-nav.open { display: flex; }
.mobile-nav a { color: rgba(255,255,255,0.85); font-size: 1rem; font-weight: 500; padding: 8px 0; }

/* BREADCRUMB */
.breadcrumb { padding: calc(var(--nav-h) + 20px) 0 0; }
.breadcrumb-list { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--text-secondary); flex-wrap: wrap; }
.breadcrumb-list a { color: var(--orange); font-weight: 500; }
.breadcrumb-list a:hover { text-decoration: underline; }
.breadcrumb-sep { color: var(--text-light); }

/* PRODUCT HERO */
.product-hero { padding: 32px 0 60px; }
.product-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.product-img-wrap { border-radius: var(--radius-lg); overflow: hidden; background: linear-gradient(135deg, var(--orange-glow), #fde8d8); aspect-ratio: 1; }
.product-img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.product-info { padding-top: 8px; }
.product-cat-label { display: inline-block; font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--orange); margin-bottom: 8px; }
.product-info h1 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); font-weight: 800; letter-spacing: -0.02em; line-height: 1.15; margin-bottom: 12px; }
.product-rating { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
.product-rating-stars { display: flex; gap: 2px; }
.product-rating-stars svg { width: 16px; height: 16px; color: #f59e0b; }
.product-rating-text { font-size: 0.85rem; color: var(--text-secondary); }
.product-price-row { display: flex; align-items: baseline; gap: 12px; margin-bottom: 8px; }
.product-price { font-size: 2rem; font-weight: 800; color: var(--orange); }
.product-price-compare { font-size: 1.1rem; color: var(--text-light); text-decoration: line-through; }
.product-price-unit { font-size: 0.9rem; color: var(--text-secondary); }
.product-save-badge { display: inline-block; padding: 4px 12px; background: #ecfdf5; color: var(--success); font-size: 0.82rem; font-weight: 700; border-radius: 6px; margin-bottom: 16px; }
.product-desc { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 24px; }
.product-variants { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.variant-chip { padding: 10px 18px; border-radius: var(--radius-sm); border: 2px solid var(--border); font-size: 0.88rem; font-weight: 600; transition: all 0.2s; }
.variant-chip.active { border-color: var(--orange); color: var(--orange); background: var(--orange-glow); }
.variant-chip:hover { border-color: var(--orange); }

.product-trust { display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; padding: 16px; background: var(--orange-subtle); border-radius: var(--radius); }
.product-trust-item { display: flex; align-items: center; gap: 10px; font-size: 0.88rem; font-weight: 500; color: var(--text); }
.product-trust-item svg { width: 18px; height: 18px; color: var(--success); flex-shrink: 0; }

.btn-book-main { width: 100%; padding: 16px; border-radius: 12px; background: var(--orange); color: #fff; font-size: 1.1rem; font-weight: 700; display: flex; align-items: center; justify-content: center; gap: 10px; transition: background 0.2s; }
.btn-book-main:hover { background: var(--orange-hover); }
.btn-book-main svg { width: 20px; height: 20px; }
.btn-call { width: 100%; padding: 14px; border-radius: 12px; border: 2px solid var(--border); background: transparent; color: var(--text); font-size: 1rem; font-weight: 600; display: flex; align-items: center; justify-content: center; gap: 8px; margin-top: 10px; transition: all 0.2s; }
.btn-call:hover { border-color: var(--orange); color: var(--orange); }
.btn-call svg { width: 18px; height: 18px; }

/* SPECS */
.specs-section { padding: 48px 0; border-top: 1px solid var(--border-light); }
.specs-section h2 { font-size: 1.4rem; font-weight: 800; margin-bottom: 20px; }
.specs-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.specs-grid li { display: flex; align-items: center; gap: 10px; font-size: 0.92rem; color: var(--text); padding: 8px 0; }
.specs-grid li svg { flex-shrink: 0; }

/* UPSELL CAROUSEL */
.upsell-section { padding: 60px 0; background: var(--surface); border-top: 1px solid var(--border-light); }
.upsell-section h2 { font-size: 1.4rem; font-weight: 800; margin-bottom: 24px; text-align: center; }
.upsell-label { display: block; text-align: center; font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--orange); margin-bottom: 8px; }
.upsell-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; overflow-x: auto; }
.upsell-card { background: var(--bg); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border-light); transition: transform 0.3s, box-shadow 0.3s; }
.upsell-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.upsell-card-img { aspect-ratio: 1; overflow: hidden; background: linear-gradient(135deg, var(--orange-glow), #fde8d8); }
.upsell-card-img img { width: 100%; height: 100%; object-fit: cover; }
.upsell-card-body { padding: 14px; }
.upsell-card-body h4 { font-size: 0.88rem; font-weight: 700; margin-bottom: 4px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.upsell-card-price { font-size: 1rem; font-weight: 800; color: var(--orange); margin-bottom: 8px; }
.upsell-card-price span { font-size: 0.78rem; color: var(--text-secondary); font-weight: 500; margin-left: 4px; }
.upsell-card-link { display: block; text-align: center; padding: 8px; border-radius: var(--radius-sm); background: var(--dark); color: #fff; font-size: 0.82rem; font-weight: 700; transition: background 0.2s; }
.upsell-card-link:hover { background: var(--orange); }

/* RELATED PRODUCTS */
.related-section { padding: 60px 0; }
.related-section h2 { font-size: 1.4rem; font-weight: 800; margin-bottom: 8px; text-align: center; }
.related-label { display: block; text-align: center; font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--orange); margin-bottom: 8px; }
.related-desc { text-align: center; font-size: 0.95rem; color: var(--text-secondary); margin-bottom: 32px; }
.related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.related-card { border-radius: var(--radius); overflow: hidden; background: var(--surface); border: 1px solid var(--border-light); transition: transform 0.3s, box-shadow 0.3s; }
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.related-card-link { display: block; }
.related-card-img { aspect-ratio: 1; overflow: hidden; background: linear-gradient(135deg, var(--orange-glow), #fde8d8); }
.related-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.related-card:hover .related-card-img img { transform: scale(1.05); }
.related-card-body { padding: 14px; }
.related-card-body h4 { font-size: 0.88rem; font-weight: 700; margin-bottom: 4px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card-price { font-size: 1rem; font-weight: 800; color: var(--orange); }
.related-card-price span { font-size: 0.78rem; color: var(--text-secondary); font-weight: 500; margin-left: 4px; }

/* FAQ */
.faq-section { padding: 60px 0; background: var(--surface); border-top: 1px solid var(--border-light); }
.faq-section h2 { font-size: 1.4rem; font-weight: 800; margin-bottom: 24px; text-align: center; }
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q { width: 100%; display: flex; justify-content: space-between; align-items: center; padding: 20px 0; font-size: 1rem; font-weight: 600; text-align: left; color: var(--text); cursor: pointer; }
.faq-q svg { width: 20px; height: 20px; color: var(--text-light); transition: transform 0.3s; flex-shrink: 0; }
.faq-item.open .faq-q svg { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-a-inner { padding: 0 0 20px; font-size: 0.92rem; color: var(--text-secondary); line-height: 1.7; }

/* CTA BANNER */
.cta-banner { background: linear-gradient(135deg, var(--dark) 0%, #1a0a12 50%, #2d1008 100%); padding: 80px 24px; text-align: center; position: relative; overflow: hidden; }
.cta-banner::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse 500px 400px at 50% 50%, rgba(232,73,15,0.12), transparent); }
.cta-banner-inner { position: relative; z-index: 1; }
.cta-banner h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; color: #fff; letter-spacing: -0.02em; margin-bottom: 14px; text-wrap: balance; }
.cta-banner p { color: rgba(255,255,255,0.65); font-size: 1.05rem; margin-bottom: 28px; }
.cta-btn { display: inline-flex; align-items: center; gap: 10px; padding: 16px 36px; border-radius: 50px; border: 2px solid var(--orange); background: transparent; color: #fff; font-size: 1.05rem; font-weight: 700; transition: all 0.3s; }
.cta-btn:hover { background: var(--orange); color: #fff; }

/* FOOTER */
.footer { background: var(--dark); color: rgba(255,255,255,0.7); padding: 64px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.footer h4 { color: #fff; font-size: 0.95rem; font-weight: 700; margin-bottom: 16px; }
.footer p, .footer a { font-size: 0.88rem; line-height: 1.8; }
.footer a:hover { color: var(--orange-light); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px; text-align: center; font-size: 0.82rem; color: rgba(255,255,255,0.4); }

/* SEO CONTENT SECTIONS */
.seo-section { padding: 56px 0; }
.seo-section.seo-alt { background: var(--surface); border-top: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); }
.seo-section h2 { font-size: 1.5rem; font-weight: 800; color: var(--text); margin-bottom: 16px; letter-spacing: -0.01em; }
.seo-section h3 { font-size: 1.15rem; font-weight: 700; color: var(--text); margin: 24px 0 10px; }
.seo-section h4 { font-size: 1.05rem; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.seo-section p { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.75; margin-bottom: 12px; }
.seo-list { list-style: none; padding: 0; margin: 12px 0 16px; }
.seo-list li { position: relative; padding: 6px 0 6px 24px; font-size: 0.93rem; color: var(--text-secondary); line-height: 1.65; }
.seo-list li::before { content: ''; position: absolute; left: 0; top: 14px; width: 8px; height: 8px; border-radius: 50%; background: var(--orange); }
.seo-list li strong { color: var(--text); }
.seo-uses-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 20px; }
.seo-use { padding: 20px; background: var(--surface); border-radius: var(--radius); border: 1px solid var(--border-light); }
.seo-use h4 { margin-bottom: 6px; }
.seo-use p { font-size: 0.9rem; margin-bottom: 0; }
.seo-updated { font-size: 0.82rem !important; color: var(--text-light) !important; margin-top: 8px; }
ol.seo-list { counter-reset: seo-counter; }
ol.seo-list li { counter-increment: seo-counter; }
ol.seo-list li::before { content: counter(seo-counter); background: var(--orange); color: #fff; width: 20px; height: 20px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.72rem; font-weight: 700; top: 10px; }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .upsell-grid, .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-links, .nav-phone { display: none; }
  .nav-menu-btn { display: flex; }
  .product-grid { grid-template-columns: 1fr; gap: 24px; }
  .specs-grid { grid-template-columns: 1fr; }
  .upsell-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .seo-uses-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .upsell-grid, .related-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .upsell-card-body, .related-card-body { padding: 10px; }
  .upsell-card-body h4, .related-card-body h4 { font-size: 0.82rem; }
  .seo-section { padding: 40px 0; }
  .seo-section h2 { font-size: 1.25rem; }
}