:root {
  --bg: #0d0f12;
  --bg-2: #0a0c0f;
  --panel: #15181d;
  --panel-2: #1c2026;
  --border: #2a2f37;
  --text: #e8ebf0;
  --muted: #9aa3ad;
  --accent: #ff7a00;
  --accent-2: #ffb24c;
  --good: #2ecc71;
  --danger: #e74c3c;
  --radius: 10px;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
  --max: 1200px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 70px; /* room for sticky mobile bar */
}
img { max-width: 100%; display: block; }
a { color: inherit; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 22px; }
.muted { color: var(--muted); }
.muted-p { color: var(--muted); }
.muted-light { color: rgba(0,0,0,0.6); margin-top: 16px; font-size: 14px; }
.muted-light a { color: #111; font-weight: 700; text-decoration: underline; }

/* PROMO BAR */
.promo-bar {
  background: linear-gradient(90deg, #ff7a00, #ff4d00);
  color: #111;
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  padding: 8px 0;
}

/* TOPBAR */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(13, 15, 18, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--border);
}
.topbar .row { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; gap: 18px; }
.brand { font-weight: 900; letter-spacing: 0.4px; text-decoration: none; color: inherit; }
.brand .dot { color: var(--accent); }
.nav { display: flex; gap: 22px; }
.nav a { color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 600; }
.nav a:hover { color: var(--text); }
.nav-cta { display: flex; gap: 14px; align-items: center; }
.phone { color: var(--text); font-size: 14px; font-weight: 600; text-decoration: none; }
.phone:hover { color: var(--accent); }
.cta-mini { background: var(--accent); color: #111; padding: 9px 16px; border-radius: 8px; text-decoration: none; font-weight: 800; font-size: 14px; }
.cta-mini:hover { background: var(--accent-2); }

/* HERO */
.hero { padding: 56px 0 60px; border-bottom: 1px solid var(--border); position: relative; }
.hero .grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.hero-copy { min-width: 0; }
.eyebrow { color: var(--accent); font-size: 12px; letter-spacing: 2px; text-transform: uppercase; font-weight: 800; }
.hero h1 { font-size: clamp(28px, 4vw, 46px); line-height: 1.1; margin: 12px 0 14px; font-weight: 800; }
.hero p.lead { color: var(--muted); font-size: 18px; max-width: 580px; margin: 0 0 18px; }

.rating-row { display: flex; align-items: center; gap: 10px; margin-bottom: 22px; }
.stars { color: #ffcc44; letter-spacing: 2px; font-size: 16px; }
.stars-big { color: #ffcc44; letter-spacing: 4px; font-size: 26px; margin-top: 6px; }

/* VARIANT SELECTOR */
.variants { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 22px; }
.variant {
  position: relative; cursor: pointer; padding: 14px 10px 12px;
  background: var(--panel); border: 2px solid var(--border); border-radius: 10px;
  text-align: center; transition: all 0.15s ease;
}
.variant input { position: absolute; opacity: 0; pointer-events: none; }
.variant:hover { border-color: var(--accent-2); }
.variant.selected { border-color: var(--accent); background: rgba(255,122,0,0.08); }
.v-cap { font-weight: 800; font-size: 15px; }
.v-price { font-size: 14px; color: var(--muted); margin-top: 2px; }
.variant.selected .v-price { color: var(--text); font-weight: 700; }
.v-note { font-size: 11px; color: var(--muted); margin-top: 4px; }
.v-badge {
  position: absolute; top: -10px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #111; padding: 2px 8px; border-radius: 999px;
  font-size: 10px; font-weight: 800; letter-spacing: 1px; white-space: nowrap;
}

.price-row { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; margin: 4px 0 22px; }
.price { font-size: 42px; font-weight: 900; line-height: 1; }
.price small { font-size: 14px; color: var(--muted); font-weight: 500; margin-left: 4px; }
.price-old { color: var(--muted); text-decoration: line-through; font-size: 18px; }
.tag-save { background: rgba(46, 204, 113, 0.12); color: var(--good); padding: 4px 10px; border-radius: 999px; font-size: 13px; font-weight: 700; }

.btns { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 22px; border-radius: 10px; font-weight: 800;
  text-decoration: none; border: 0; cursor: pointer; font-size: 15px;
  transition: transform 0.05s ease, background 0.15s, border-color 0.15s;
  font-family: inherit;
}
.btn-lg { padding: 16px 28px; font-size: 16px; }
.btn-primary { background: var(--accent); color: #111; }
.btn-primary:hover { background: var(--accent-2); }
.btn-ghost { background: transparent; color: var(--text); border: 2px solid var(--border); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.7; cursor: wait; }

.trust-strip { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 12px 22px; color: var(--muted); font-size: 14px; }
.trust-strip li::before { content: "✓"; color: var(--good); margin-right: 6px; font-weight: 900; }

/* HERO VISUAL */
.hero-visual {
  position: relative; border-radius: 16px; overflow: hidden;
  border: 1px solid var(--border); box-shadow: var(--shadow);
  aspect-ratio: 4 / 3; background: #14171c;
}
.hero-visual img { width: 100%; height: 100%; object-fit: cover; }

/* IMAGE PLACEHOLDER (replace with real reference image later) */
.img-placeholder {
  width: 100%; height: 100%;
  background:
    repeating-linear-gradient(45deg, rgba(255,122,0,0.06) 0 12px, transparent 12px 24px),
    linear-gradient(135deg, #1c2026, #14171c);
  border: 2px dashed rgba(255,122,0,0.5);
  border-radius: inherit;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 16px;
  color: rgba(255,255,255,0.65);
  position: relative; min-height: 140px;
}
.img-placeholder.wide { aspect-ratio: 16/9; }
.img-placeholder .ph-label {
  color: var(--accent); font-weight: 900; letter-spacing: 1.5px;
  font-size: 12px; text-transform: uppercase; margin-bottom: 6px;
}
.img-placeholder .ph-hint {
  font-size: 12px; color: var(--muted); max-width: 280px; line-height: 1.4;
}
.img-placeholder::after {
  content: "📷"; position: absolute; top: 12px; right: 14px; font-size: 18px; opacity: 0.6;
}
.hero-visual .badge {
  position: absolute; top: 16px; right: 16px;
  background: var(--accent); color: #111;
  padding: 7px 14px; border-radius: 999px;
  font-size: 12px; font-weight: 900; letter-spacing: 0.5px;
}
.hero-meta {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.85));
  padding: 30px 16px 14px; display: flex; gap: 16px; justify-content: space-around;
  color: #fff;
}
.hero-meta div { text-align: center; }
.hero-meta b { display: block; font-size: 20px; font-weight: 800; color: var(--accent-2); }
.hero-meta span { font-size: 11px; color: rgba(255,255,255,0.7); text-transform: uppercase; letter-spacing: 1px; }

/* LOGO BAR */
.logo-bar { background: var(--bg-2); padding: 20px 0; border-bottom: 1px solid var(--border); }
.logo-bar-grid { display: flex; align-items: center; justify-content: space-between; gap: 22px; flex-wrap: wrap; }
.logo-bar-label { color: var(--muted); font-size: 13px; }
.pay-logos { display: flex; gap: 8px; flex-wrap: wrap; }
.pay {
  background: var(--panel); border: 1px solid var(--border);
  color: var(--muted); padding: 5px 11px; border-radius: 6px;
  font-size: 11px; font-weight: 800; letter-spacing: 1px;
}
.pay-logos.sm .pay { font-size: 10px; padding: 4px 9px; }

/* GENERIC SECTION */
section { padding: 70px 0; border-bottom: 1px solid var(--border); }
section.dark { background: var(--bg-2); }
.section-head { text-align: center; margin-bottom: 44px; }
.section-head .eyebrow { display: inline-block; margin-bottom: 8px; }
.section-head h2 { font-size: clamp(26px, 3.2vw, 36px); margin: 0 0 10px; font-weight: 800; line-height: 1.15; }
.section-head p { color: var(--muted); margin: 0; max-width: 600px; margin-left: auto; margin-right: auto; }

/* BENEFITS */
.benefits { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.benefit {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px;
  transition: border-color 0.15s, transform 0.15s;
}
.benefit:hover { border-color: var(--accent); transform: translateY(-2px); }
.benefit .icon {
  width: 44px; height: 44px; border-radius: 10px;
  background: rgba(255, 122, 0, 0.12); color: var(--accent);
  display: flex; align-items: center; justify-content: center; font-size: 22px;
  margin-bottom: 16px;
}
.benefit h3 { margin: 0 0 6px; font-size: 18px; }
.benefit p { margin: 0; color: var(--muted); font-size: 14px; }

/* FEATURE BLOCKS */
.features .feature-block {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
  align-items: center; padding: 32px 0;
}
.features .feature-block.reverse { direction: rtl; }
.features .feature-block.reverse > * { direction: ltr; }
.feature-img {
  border-radius: 14px; overflow: hidden; border: 1px solid var(--border);
  aspect-ratio: 4 / 3; background: #14171c;
}
.feature-img img { width: 100%; height: 100%; object-fit: cover; }
.feature-text .eyebrow { margin-bottom: 10px; display: inline-block; }
.feature-text h3 { font-size: clamp(22px, 2.6vw, 28px); margin: 0 0 12px; font-weight: 800; }
.feature-text p { color: var(--muted); margin: 0 0 16px; }

.check-list { list-style: none; padding: 0; margin: 0; }
.check-list li {
  padding: 9px 0 9px 28px; position: relative;
  border-bottom: 1px dashed var(--border);
}
.check-list li:last-child { border-bottom: 0; }
.check-list li::before {
  content: "✓"; color: var(--good); font-weight: 900;
  position: absolute; left: 0;
}
.check-list.big li { padding: 13px 0 13px 28px; font-size: 15px; }

/* VIDEO */
.video-section { padding: 70px 0; }
.video-wrap {
  position: relative; border-radius: 16px; overflow: hidden;
  border: 1px solid var(--border); box-shadow: var(--shadow);
  max-width: 960px; margin: 0 auto; aspect-ratio: 16 / 9;
  background: #000;
}
.video-wrap img { width: 100%; height: 100%; object-fit: cover; opacity: 0.65; }
.play-btn {
  position: absolute; inset: 0; margin: auto;
  width: 80px; height: 80px; border: 0; background: transparent;
  cursor: pointer; padding: 0;
  transition: transform 0.15s;
}
.play-btn:hover { transform: scale(1.1); }
.video-meta {
  position: absolute; bottom: 12px; right: 16px;
  background: rgba(0,0,0,0.65); color: #fff;
  padding: 5px 11px; border-radius: 6px; font-size: 13px; font-weight: 600;
}

/* SPECS */
.specs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.spec {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px 18px;
}
.spec .k { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 1px; font-weight: 600; }
.spec .v { font-size: 24px; font-weight: 800; margin-top: 6px; line-height: 1.1; }
.spec .u { color: var(--muted); font-size: 13px; margin-top: 2px; }

/* COMPARE TABLE */
.compare-table-wrap { overflow-x: auto; }
.compare-table {
  width: 100%; border-collapse: separate; border-spacing: 0;
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden;
  min-width: 700px;
}
.compare-table th, .compare-table td {
  padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--border); font-size: 14px;
}
.compare-table th { color: var(--muted); font-weight: 700; font-size: 12px; text-transform: uppercase; letter-spacing: 1px; background: var(--panel-2); }
.compare-table th.hl { color: #111; background: var(--accent); }
.compare-table td.hl { background: rgba(255,122,0,0.06); font-weight: 600; }
.compare-table tbody tr:last-child td { border-bottom: 0; }
.compare-table tbody tr:hover td { background: var(--panel-2); }
.compare-table tbody tr:hover td.hl { background: rgba(255,122,0,0.12); }

/* BOX SECTION */
.box-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.box-item {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px;
  position: relative;
}
.box-item .b-num {
  font-size: 28px; font-weight: 900; color: var(--accent);
  margin-bottom: 8px; opacity: 0.8;
}
.box-item h4 { margin: 0 0 6px; font-size: 16px; }
.box-item p { margin: 0; color: var(--muted); font-size: 14px; }

/* INSTALL */
.install-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.install-card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px; text-align: center;
}
.install-card .i-icon { font-size: 32px; margin-bottom: 10px; }
.install-card h4 { margin: 0 0 4px; font-size: 15px; }
.install-card .i-spec { color: var(--accent); font-weight: 800; font-size: 14px; margin-bottom: 10px; }
.install-card p { margin: 0; color: var(--muted); font-size: 13px; }

/* SAFETY */
.safety { background: var(--panel-2); }
.safety .grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.cert-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.cert {
  background: var(--panel); border: 1px solid var(--border);
  padding: 10px 16px; border-radius: 8px; font-size: 13px; font-weight: 700;
  display: flex; align-items: center; gap: 8px;
}
.cert .b { color: var(--accent); }

/* GALLERY */
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.g-tile {
  display: block; aspect-ratio: 1 / 1; overflow: hidden;
  border-radius: 12px; border: 1px solid var(--border);
  background: var(--panel); position: relative;
}
.g-tile.big { grid-column: span 2; grid-row: span 2; aspect-ratio: 1 / 1; }
.g-tile img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
.g-tile:hover img { transform: scale(1.05); }

/* REVIEWS */
.reviews-section .section-head h2 { margin-bottom: 0; }
.reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 30px; }
.review {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
}
.r-head { display: flex; gap: 12px; margin-bottom: 12px; align-items: center; }
.r-avatar {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--accent); color: #111; font-weight: 900;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
}
.r-head b { font-size: 14px; }
.review p { margin: 8px 0 12px; }
.r-tag {
  display: inline-block; background: var(--panel-2); border: 1px solid var(--border);
  color: var(--muted); padding: 3px 10px; border-radius: 999px; font-size: 11px; font-weight: 700;
}

/* FAQ */
.faq details {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 20px; margin-bottom: 10px;
  transition: border-color 0.15s;
}
.faq details[open] { border-color: var(--accent); }
.faq summary {
  cursor: pointer; font-weight: 700; outline: none;
  list-style: none; display: flex; justify-content: space-between; align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-size: 24px; font-weight: 400; transition: transform 0.15s; }
.faq details[open] summary::after { content: "−"; }
.faq p { margin: 10px 0 0; color: var(--muted); }

/* LEAD FORM */
.lead-form {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
  max-width: 720px; margin: 0 auto;
}
.lead-form .full { grid-column: 1 / -1; }
.lead-form input, .lead-form textarea {
  width: 100%; padding: 13px 14px;
  background: var(--bg); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px;
  font: inherit;
}
.lead-form input:focus, .lead-form textarea:focus { outline: none; border-color: var(--accent); }
.lead-form button { width: 100%; padding: 14px; }
.form-status { color: var(--good); font-size: 14px; min-height: 20px; }
.form-status.err { color: var(--danger); }

/* FINAL CTA */
.cta-final {
  background: linear-gradient(135deg, #ff7a00, #ff4d00);
  color: #111;
  text-align: center;
  padding: 64px 22px;
  border: 0;
}
.cta-final h2 { font-size: clamp(26px, 3.4vw, 38px); margin: 0 0 10px; color: #111; }
.cta-final p { margin: 0 0 24px; color: rgba(0,0,0,0.7); }
.cta-final .btn { background: #111; color: #fff; }
.cta-final .btn:hover { background: #222; }

/* FOOTER */
footer { padding: 50px 0 30px; color: var(--muted); font-size: 14px; background: var(--bg-2); }
.foot-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 30px; margin-bottom: 36px; }
.foot-grid h5 { margin: 0 0 14px; color: var(--text); font-size: 13px; text-transform: uppercase; letter-spacing: 1px; }
.foot-grid a { display: block; color: var(--muted); text-decoration: none; padding: 4px 0; }
.foot-grid a:hover { color: var(--accent); }
.foot-grid a.small { font-size: 12px; margin-top: 10px; }
.foot-grid p { margin: 0 0 14px; }
.foot-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; padding-top: 22px; border-top: 1px solid var(--border); font-size: 13px; }

/* MOBILE CART BAR */
.mobile-cart-bar {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0;
  background: var(--panel); border-top: 1px solid var(--border);
  padding: 10px 14px;
  z-index: 60;
  align-items: center; gap: 12px;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.4);
}
.mc-info { flex: 1; min-width: 0; }
.mc-name { font-size: 12px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mc-price { font-size: 18px; font-weight: 800; }
.mobile-cart-bar .btn { padding: 11px 18px; font-size: 14px; }

/* RESPONSIVE */
@media (max-width: 1000px) {
  .hero .grid, .safety .grid { grid-template-columns: 1fr; gap: 32px; }
  .specs { grid-template-columns: repeat(2, 1fr); }
  .benefits, .reviews { grid-template-columns: 1fr 1fr; }
  .features .feature-block { grid-template-columns: 1fr; gap: 24px; }
  .features .feature-block.reverse { direction: ltr; }
  .install-grid { grid-template-columns: 1fr 1fr; }
  .box-grid { grid-template-columns: 1fr 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .nav { display: none; }
}
@media (max-width: 700px) {
  .benefits, .reviews, .box-grid, .install-grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr 1fr; }
  .g-tile.big { grid-column: span 2; grid-row: span 1; }
  .specs { grid-template-columns: 1fr 1fr; }
  .variants { grid-template-columns: 1fr 1fr; }
  .v-badge { font-size: 9px; }
  .foot-grid { grid-template-columns: 1fr; }
  .lead-form { grid-template-columns: 1fr; }
  section { padding: 50px 0; }
  .hero { padding: 36px 0 40px; }
  .hero-meta b { font-size: 16px; }
  .mobile-cart-bar { display: flex; }
  .nav-cta .phone { display: none; }
  .logo-bar-grid { justify-content: center; }
}