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

:root {
  --black: #0d0d0d;
  --gold: #C9A96E;
  --gold-light: #E8C98A;
  --white: #ffffff;
  --gray: #f5f5f3;
  --text: #2a2a2a;
  --muted: #777;
  --radius: 12px;
}

html { scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: var(--text); background: #fff; line-height: 1.6; }

/* NAV */
header { position: sticky; top: 0; z-index: 100; background: rgba(13,13,13,0.97); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(201,169,110,0.2); }
nav { max-width: 1280px; margin: 0 auto; padding: 14px 28px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.logo { font-size: 24px; font-weight: 800; letter-spacing: 3px; color: var(--white); text-decoration: none; text-transform: uppercase; }
.logo span { color: var(--gold); }
.nav-links { display: flex; gap: 4px; flex-wrap: wrap; }
.nav-links a { text-decoration: none; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; color: rgba(255,255,255,0.65); padding: 6px 14px; border-radius: 6px; transition: all .2s; border: 1px solid transparent; }
.nav-links a:hover, .nav-links a.active { color: var(--gold); border-color: rgba(201,169,110,0.3); background: rgba(201,169,110,0.07); }

/* HERO */
.hero { min-height: 100vh; background: var(--black); display: grid; grid-template-columns: 1fr 1fr; align-items: center; overflow: hidden; position: relative; }
.hero::before { content:''; position:absolute; inset:0; background: radial-gradient(ellipse at 70% 50%, rgba(201,169,110,0.08) 0%, transparent 70%); pointer-events:none; }
.hero-text { padding: 80px 60px 80px 80px; position: relative; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(201,169,110,0.12); border: 1px solid rgba(201,169,110,0.3); color: var(--gold); font-size: 11px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; padding: 8px 16px; border-radius: 50px; margin-bottom: 28px; }
.hero h1 { font-size: clamp(36px, 4.5vw, 64px); font-weight: 800; color: var(--white); line-height: 1.1; margin-bottom: 20px; letter-spacing: -1px; }
.hero h1 em { color: var(--gold); font-style: normal; }
.hero-sub { font-size: 17px; color: rgba(255,255,255,0.6); max-width: 460px; margin-bottom: 40px; line-height: 1.75; }
.hero-cta { display: inline-flex; align-items: center; gap: 10px; background: linear-gradient(135deg, var(--gold), var(--gold-light)); color: var(--black); font-weight: 700; font-size: 15px; padding: 15px 32px; border-radius: 50px; text-decoration: none; transition: transform .2s, box-shadow .2s; box-shadow: 0 8px 24px rgba(201,169,110,0.35); }
.hero-cta:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(201,169,110,0.5); }
.hero-stats { display: flex; gap: 32px; margin-top: 48px; padding-top: 40px; border-top: 1px solid rgba(255,255,255,0.1); }
.hero-stat-num { font-size: 28px; font-weight: 800; color: var(--white); display: block; }
.hero-stat-label { font-size: 12px; color: rgba(255,255,255,0.45); text-transform: uppercase; letter-spacing: 1px; }
.hero-img { height: 100vh; overflow: hidden; position: relative; background: #111; }
.hero-img img { width: 100%; height: 100%; object-fit: cover; object-position: center 30%; opacity: 0.85; }
.hero-img::after { content:''; position:absolute; left:0; top:0; bottom:0; width:120px; background: linear-gradient(to right, var(--black), transparent); }

/* FEATURES STRIP */
.features-strip { background: var(--gold); display: grid; grid-template-columns: repeat(4,1fr); }
.feature-item { padding: 28px 24px; text-align: center; border-right: 1px solid rgba(0,0,0,0.1); }
.feature-item:last-child { border-right: none; }
.feature-icon { font-size: 24px; margin-bottom: 8px; }
.feature-item h4 { font-size: 13px; font-weight: 700; color: var(--black); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 4px; }
.feature-item p { font-size: 12px; color: rgba(0,0,0,0.6); }

/* SECTION HEADER */
.section-header { text-align: center; padding: 80px 24px 48px; }
.section-label { font-size: 11px; font-weight: 700; letter-spacing: 3px; text-transform: uppercase; color: var(--gold); margin-bottom: 12px; }
.section-header h2 { font-size: clamp(28px, 3.5vw, 44px); font-weight: 800; color: var(--black); letter-spacing: -0.5px; line-height: 1.2; }
.section-header p { font-size: 17px; color: var(--muted); max-width: 540px; margin: 14px auto 0; }

/* CATEGORY TABS */
.category-tabs { display: flex; justify-content: center; gap: 8px; padding: 0 24px 40px; flex-wrap: wrap; }
.tab-btn { padding: 10px 24px; font-size: 13px; font-weight: 600; border: 2px solid #e5e5e5; background: #fff; color: var(--muted); border-radius: 50px; cursor: pointer; transition: all .2s; }
.tab-btn:hover { border-color: var(--gold); color: var(--black); }
.tab-btn.active { background: var(--black); border-color: var(--black); color: var(--white); }

/* PRODUCTS GRID */
.products-section { background: var(--gray); padding-bottom: 80px; }
.products-grid { max-width: 1280px; margin: 0 auto; padding: 0 28px; display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }
.product-card { background: #fff; border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: transform .25s, box-shadow .25s; border: 1px solid #eee; }
.product-card:hover { transform: translateY(-6px); box-shadow: 0 20px 48px rgba(0,0,0,0.1); }
.product-card-img { position: relative; aspect-ratio: 1; overflow: hidden; background: #fafafa; }
.product-card-img img { width: 100%; height: 100%; object-fit: contain; padding: 20px; transition: transform .4s; }
.product-card:hover .product-card-img img { transform: scale(1.05); }
.product-badge { position: absolute; top: 12px; left: 12px; background: var(--black); color: var(--white); font-size: 10px; font-weight: 700; padding: 4px 10px; border-radius: 4px; letter-spacing: 1px; text-transform: uppercase; }
.product-card-body { padding: 18px; flex: 1; display: flex; flex-direction: column; }
.product-category { font-size: 10px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--gold); margin-bottom: 6px; }
.product-card h3 { font-size: 14px; font-weight: 600; color: var(--black); line-height: 1.45; margin-bottom: 10px; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.product-rating { font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.product-rating .stars { color: #e47911; }
.product-price-row { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.product-price { font-size: 20px; font-weight: 800; color: var(--black); }
.product-price-old { font-size: 13px; color: #bbb; text-decoration: line-through; }
.btn-amazon { display: block; text-align: center; background: linear-gradient(135deg, #FFD814, #FFBD00); color: #0d0d0d; font-weight: 700; font-size: 13px; padding: 11px 16px; border-radius: 8px; text-decoration: none; transition: all .2s; border: 1px solid #F0C14B; }
.btn-amazon:hover { background: linear-gradient(135deg, #FFBD00, #FFB000); box-shadow: 0 4px 12px rgba(255,180,0,.35); }
.hidden { display: none; }

/* ABOUT SECTION */
.about-section { display: grid; grid-template-columns: 1fr 1fr; min-height: 520px; }
.about-img { background: var(--black) center/cover no-repeat; position: relative; min-height: 400px; }
.about-img::after { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(201,169,110,0.15), transparent); }
.about-content { padding: 80px 70px; background: var(--black); display: flex; flex-direction: column; justify-content: center; }
.about-content .section-label { text-align: left; }
.about-content h2 { font-size: clamp(28px, 3vw, 42px); font-weight: 800; color: var(--white); margin: 12px 0 20px; line-height: 1.2; }
.about-content p { color: rgba(255,255,255,0.6); font-size: 16px; margin-bottom: 32px; line-height: 1.8; }
.about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.about-feat { display: flex; gap: 12px; align-items: flex-start; }
.about-feat-icon { width: 36px; height: 36px; background: rgba(201,169,110,0.15); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0; }
.about-feat h4 { font-size: 13px; font-weight: 700; color: var(--white); margin-bottom: 3px; }
.about-feat p { font-size: 12px; color: rgba(255,255,255,0.45); margin: 0; }

/* REVIEWS */
.reviews-section { padding: 80px 0; background: #fff; }
.reviews-grid { max-width: 1280px; margin: 0 auto; padding: 0 28px; display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.review-card { background: var(--gray); border-radius: 16px; padding: 28px; position: relative; }
.review-stars { color: #e47911; font-size: 16px; margin-bottom: 14px; }
.review-text { font-size: 15px; color: var(--text); line-height: 1.75; margin-bottom: 20px; font-style: italic; }
.review-author { display: flex; align-items: center; gap: 12px; }
.review-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--gold); display: flex; align-items: center; justify-content: center; font-weight: 700; color: var(--black); font-size: 16px; flex-shrink: 0; }
.review-name { font-weight: 700; font-size: 14px; color: var(--black); }
.review-meta { font-size: 12px; color: var(--muted); }

/* SPECS / COMPARISON */
.specs-section { padding: 80px 0; background: var(--black); }
.specs-section .section-header { padding-top: 0; }
.specs-section .section-label { color: var(--gold); }
.specs-section h2 { color: var(--white); }
.specs-section p { color: rgba(255,255,255,0.5); }
.specs-table { max-width: 900px; margin: 0 auto; padding: 0 28px; }
.spec-row { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; border-bottom: 1px solid rgba(255,255,255,0.08); }
.spec-row.head { background: rgba(201,169,110,0.1); border-radius: 10px 10px 0 0; border: none; }
.spec-cell { padding: 16px 20px; font-size: 14px; color: rgba(255,255,255,0.7); }
.spec-row.head .spec-cell { font-weight: 700; color: var(--gold); font-size: 12px; letter-spacing: 1px; text-transform: uppercase; }
.spec-cell.check { color: #4ade80; font-size: 18px; }
.spec-cell.cross { color: rgba(255,255,255,0.2); font-size: 18px; }

/* FAQ */
.faq-section { padding: 80px 0; background: var(--gray); }
.faq-list { max-width: 760px; margin: 0 auto; padding: 0 28px; }
.faq-item { background: #fff; border-radius: 12px; margin-bottom: 10px; overflow: hidden; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.faq-q { width: 100%; text-align: left; padding: 20px 24px; font-size: 15px; font-weight: 600; color: var(--black); background: none; border: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq-q::after { content: '+'; font-size: 22px; color: var(--gold); font-weight: 300; flex-shrink: 0; transition: transform .2s; }
.faq-item.open .faq-q::after { content: '−'; }
.faq-a { display: none; padding: 0 24px 20px; font-size: 14px; color: var(--muted); line-height: 1.75; }
.faq-item.open .faq-a { display: block; }

/* VIDEO SECTION */
.video-section { background: var(--black); padding: 80px 28px; text-align: center; }
.video-section .section-label { color: var(--gold); }
.video-section h2 { font-size: clamp(26px,3vw,42px); font-weight: 800; color: var(--white); margin: 12px 0 16px; }
.video-section p { color: rgba(255,255,255,0.55); font-size: 16px; max-width: 600px; margin: 0 auto 36px; }
.video-wrap { max-width: 860px; margin: 0 auto; border-radius: 16px; overflow: hidden; aspect-ratio: 16/9; box-shadow: 0 24px 60px rgba(0,0,0,0.5); }
.video-wrap iframe { width: 100%; height: 100%; border: none; }

/* BANNER SECTION */
.banner-split { display: grid; grid-template-columns: 1fr 1fr; min-height: 420px; }
.banner-img { overflow: hidden; position: relative; }
.banner-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.banner-text { background: var(--gray); padding: 60px 50px; display: flex; flex-direction: column; justify-content: center; }
.banner-text.dark { background: var(--black); }
.banner-text h2 { font-size: clamp(24px,2.5vw,38px); font-weight: 800; color: var(--black); margin-bottom: 16px; line-height: 1.2; }
.banner-text.dark h2 { color: var(--white); }
.banner-text p { font-size: 16px; color: var(--muted); line-height: 1.8; margin-bottom: 24px; }
.banner-text.dark p { color: rgba(255,255,255,0.55); }
.banner-features { list-style: none; display: flex; flex-direction: column; gap: 10px; margin-bottom: 28px; }
.banner-features li { display: flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 600; color: var(--black); }
.banner-features li::before { content: '✓'; width: 22px; height: 22px; background: var(--gold); color: var(--black); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 800; flex-shrink: 0; }
.banner-text.dark .banner-features li { color: rgba(255,255,255,0.8); }
.btn-gold { display: inline-flex; align-items: center; gap: 8px; background: linear-gradient(135deg,var(--gold),var(--gold-light)); color: var(--black); font-weight: 700; font-size: 14px; padding: 13px 28px; border-radius: 50px; text-decoration: none; transition: transform .2s, box-shadow .2s; }
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(201,169,110,.4); }

/* FOOTER */
footer { background: var(--black); color: rgba(255,255,255,0.4); text-align: center; padding: 36px 24px; border-top: 1px solid rgba(201,169,110,0.15); }
footer .logo-f { font-size: 20px; font-weight: 800; letter-spacing: 3px; color: var(--white); margin-bottom: 12px; text-transform: uppercase; }
footer .logo-f span { color: var(--gold); }
footer p { font-size: 13px; margin-bottom: 6px; }
footer .disclaimer { font-size: 11px; color: rgba(255,255,255,0.25); }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(3,1fr); }
}
@media (max-width: 900px) {
  .banner-split { grid-template-columns: 1fr; }
  .banner-text { padding: 40px 28px; }
  .banner-img { min-height: 260px; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-text { padding: 60px 28px; }
  .hero-img { height: 380px; }
  .hero-img::after { width: 0; top: 0; left: 0; right: 0; height: 80px; background: linear-gradient(to bottom, var(--black), transparent); }
  .features-strip { grid-template-columns: repeat(2,1fr); }
  .about-section { grid-template-columns: 1fr; }
  .about-img { min-height: 280px; }
  .about-content { padding: 50px 28px; }
  .products-grid { grid-template-columns: repeat(2,1fr); }
  .reviews-grid { grid-template-columns: 1fr; }
  .spec-row { grid-template-columns: 1fr 1fr; }
  .spec-row.head .spec-cell:nth-child(n+3) { display: none; }
  .spec-cell:nth-child(n+3) { display: none; }
}
@media (max-width: 600px) {
  .products-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .hero-stats { gap: 20px; }
  nav { padding: 12px 16px; }
  .about-features { grid-template-columns: 1fr; }
}
@media (max-width: 400px) {
  .products-grid { grid-template-columns: 1fr; }
}