:root {
  --navy: #0f172a;
  --navy-2: #111827;
  --yellow: #facc15;
  --orange: #f59e0b;
  --green: #22c55e;
  --red: #ef4444;
  --white: #ffffff;
  --muted: #64748b;
  --light: #f8fafc;
  --line: rgba(15, 23, 42, 0.10);
  --shadow: 0 24px 70px rgba(15, 23, 42, 0.16);
  --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Tahoma", "Arial", sans-serif;
  background: var(--light);
  color: var(--navy);
  line-height: 1.8;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1180px, calc(100% - 32px)); margin: auto; }

.top-bar {
  background: #020617;
  color: #e2e8f0;
  font-size: 14px;
  padding: 10px 0;
}
.top-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

header {
  position: sticky;
  top: 0;
  z-index: 99;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  letter-spacing: -0.5px;
}
.logo {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--yellow), var(--orange));
  color: #020617;
  box-shadow: 0 12px 30px rgba(245, 158, 11, 0.35);
  font-size: 26px;
}
.brand small {
  display: block;
  color: var(--muted);
  font-weight: 600;
  font-size: 12px;
  margin-top: -4px;
}
nav {
  display: flex;
  align-items: center;
  gap: 16px;
  color: #334155;
  font-weight: 800;
  font-size: 14px;
  white-space: nowrap;
}
nav a { transition: color .2s ease; }
nav a:hover { color: var(--orange); }

.actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  cursor: pointer;
  font-weight: 900;
  border-radius: 999px;
  padding: 12px 18px;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(135deg, var(--yellow), var(--orange));
  color: #111827;
  box-shadow: 0 15px 30px rgba(245, 158, 11, 0.28);
}
.btn-dark { background: var(--navy); color: white; }
.btn-green { background: var(--green); color: white; }
.btn-outline { border: 1px solid var(--line); background: white; color: var(--navy); }

.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 10%, rgba(250, 204, 21, 0.20), transparent 28%),
    radial-gradient(circle at 90% 20%, rgba(34, 197, 94, 0.14), transparent 26%),
    linear-gradient(135deg, #020617 0%, #0f172a 52%, #111827 100%);
  color: white;
  padding: 88px 0 62px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 42px;
  align-items: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(250, 204, 21, 0.14);
  border: 1px solid rgba(250, 204, 21, 0.28);
  color: #fde68a;
  padding: 8px 14px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 14px;
  margin-bottom: 18px;
}
h1 {
  font-size: clamp(34px, 6vw, 68px);
  line-height: 1.12;
  margin: 0 0 18px;
  letter-spacing: -1.8px;
}
.hero p {
  color: #cbd5e1;
  font-size: 18px;
  max-width: 620px;
  margin: 0 0 26px;
}
.hero .highlight { color: var(--yellow); }
.hero-card {
  position: relative;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}
.battery-visual {
  min-height: 280px;
  border-radius: 26px;
  background: linear-gradient(145deg, #1f2937, #020617);
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.12);
  padding: 22px;
}
.hero-battery-img {
  width: min(410px, 100%);
  height: 230px;
  object-fit: contain;
  filter: drop-shadow(0 28px 36px rgba(0,0,0,.35));
}
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 18px;
}
.stat {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  padding: 14px;
  border-radius: 18px;
  text-align: center;
}
.stat strong { display: block; font-size: 22px; color: var(--yellow); }
.stat span { color: #cbd5e1; font-size: 13px; }

section { padding: 78px 0; }
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 28px;
}
.eyebrow { color: var(--orange); font-weight: 900; margin-bottom: 4px; }
h2 {
  font-size: clamp(28px, 4vw, 44px);
  margin: 0;
  letter-spacing: -1px;
  line-height: 1.25;
}
.lead { color: var(--muted); max-width: 720px; margin: 10px 0 0; }

.services-grid,
.brands-grid,
.products-grid,
.cars-grid,
.car-brands-grid,
.why-grid {
  display: grid;
  gap: 18px;
}
.services-grid { grid-template-columns: repeat(4, 1fr); }
.brands-grid { grid-template-columns: repeat(4, 1fr); }
.products-grid { grid-template-columns: repeat(3, 1fr); }
.cars-grid { grid-template-columns: repeat(3, 1fr); }
.car-brands-grid { grid-template-columns: repeat(4, 1fr); }
.why-grid { grid-template-columns: repeat(3, 1fr); }

.card {
  background: white;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 12px 36px rgba(15,23,42,.06);
  transition: transform .2s ease, box-shadow .2s ease;
}
.card:hover { transform: translateY(-6px); box-shadow: 0 22px 50px rgba(15,23,42,.12); }
.icon {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  background: #fff7ed;
  color: var(--orange);
  font-size: 26px;
  margin-bottom: 14px;
}
.card h3 { margin: 0 0 8px; font-size: 21px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

.brand-card,
.car-card,
.car-brand-card { text-align: center; overflow: hidden; position: relative; }
.brand-logo-wrap,
.car-brand-logo-wrap,
.car-image-wrap {
  background: linear-gradient(135deg, #f8fafc, #e2e8f0);
  border-radius: 20px;
  padding: 12px;
  margin-bottom: 16px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  min-height: 126px;
  display: grid;
  place-items: center;
}
.brand-logo, .car-brand-logo {
  width: 100%;
  max-width: 170px;
  height: 100px;
  object-fit: contain;
  margin: auto;
}
.car-image {
  width: 100%;
  max-width: 260px;
  height: 150px;
  object-fit: contain;
  margin: auto;
  filter: drop-shadow(0 16px 16px rgba(15,23,42,.15));
}
.note-box {
  margin-top: 22px;
  background: #fffbeb;
  border: 1px solid rgba(245, 158, 11, .25);
  color: #92400e;
  border-radius: 22px;
  padding: 18px 22px;
  font-weight: 800;
}

.filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}
.filter-btn {
  border: 1px solid var(--line);
  background: white;
  border-radius: 999px;
  padding: 10px 16px;
  font-weight: 800;
  cursor: pointer;
}
.filter-btn.active { background: var(--navy); color: white; }
.product { padding: 0; overflow: hidden; }
.product-top {
  min-height: 170px;
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: white;
  display: grid;
  place-items: center;
  padding: 14px;
  position: relative;
}
.product-top::after {
  content: "";
  position: absolute;
  inset: auto 20px 18px auto;
  width: 72px;
  height: 18px;
  background: linear-gradient(90deg, var(--green), var(--yellow));
  border-radius: 999px;
  opacity: .75;
}
.product-battery-image {
  width: 100%;
  max-width: 260px;
  height: 140px;
  object-fit: contain;
  margin: auto;
  filter: drop-shadow(0 18px 18px rgba(0,0,0,.25));
}
.product-body { padding: 22px; }
.product-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 12px 0 16px;
}
.tag {
  background: #f1f5f9;
  color: #334155;
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 800;
}
.price { font-size: 22px; font-weight: 900; color: var(--green); margin-bottom: 14px; }
.compatibility-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 12px;
}

.dark-section {
  background: linear-gradient(135deg, #020617, #111827);
  color: white;
}
.dark-section .lead, .dark-section p { color: #cbd5e1; }
.dark-section .card { background: rgba(255,255,255,.07); color: white; border-color: rgba(255,255,255,.12); }
.dark-section .card p { color: #cbd5e1; }
.dark-section .tag { background: rgba(255,255,255,.12); color: #f8fafc; }

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  counter-reset: step;
}
.step { position: relative; }
.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: 18px;
  left: 18px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--yellow);
  color: #111827;
  display: grid;
  place-items: center;
  font-weight: 900;
}

.contact-grid {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 22px;
  align-items: stretch;
}
.contact-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}
.contact-list {
  display: grid;
  gap: 14px;
  margin-top: 20px;
}
.contact-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px;
  border-radius: 18px;
  background: #f8fafc;
  border: 1px solid var(--line);
}
.map-box {
  min-height: 420px;
  border-radius: var(--radius);
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(15,23,42,.80), rgba(15,23,42,.35)),
    radial-gradient(circle at 30% 30%, rgba(250,204,21,.45), transparent 20%),
    radial-gradient(circle at 70% 70%, rgba(34,197,94,.35), transparent 24%),
    #1e293b;
  color: white;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 32px;
  position: relative;
}
.pin {
  width: 82px;
  height: 82px;
  border-radius: 50% 50% 50% 0;
  background: var(--yellow);
  transform: rotate(-45deg);
  margin: 0 auto 26px;
  display: grid;
  place-items: center;
  box-shadow: 0 18px 45px rgba(250,204,21,.28);
}
.pin span { transform: rotate(45deg); font-size: 30px; }

.faq {
  display: grid;
  gap: 12px;
  max-width: 900px;
  margin: auto;
}
details {
  background: white;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 18px 22px;
}
summary { cursor: pointer; font-weight: 900; }
details p { color: var(--muted); margin-bottom: 0; }

footer { background: #020617; color: #cbd5e1; padding: 38px 0; }
footer .container {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  align-items: center;
}
.floating-whatsapp {
  position: fixed;
  bottom: 22px;
  left: 22px;
  z-index: 100;
  background: #22c55e;
  color: white;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 28px;
  box-shadow: 0 16px 38px rgba(34,197,94,.35);
}
.mobile-menu-btn {
  display: none;
  border: 1px solid var(--line);
  background: white;
  border-radius: 14px;
  padding: 10px 12px;
  font-weight: 900;
}

@media (max-width: 1100px) {
  nav { gap: 10px; font-size: 13px; }
}
@media (max-width: 960px) {
  .mobile-menu-btn { display: inline-flex; }
  nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    padding-top: 10px;
  }
  nav.open { display: flex; }
  .hero-grid, .contact-grid { grid-template-columns: 1fr; }
  .services-grid, .brands-grid, .why-grid, .steps, .car-brands-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid, .cars-grid { grid-template-columns: repeat(2, 1fr); }
  .section-head { align-items: flex-start; flex-direction: column; }
  .navbar { flex-wrap: wrap; }
}
@media (max-width: 640px) {
  .top-bar { font-size: 12px; }
  .navbar { align-items: flex-start; flex-direction: column; }
  .hero { padding-top: 56px; }
  .services-grid, .brands-grid, .why-grid, .steps, .products-grid, .cars-grid, .car-brands-grid, .stats { grid-template-columns: 1fr; }
  .actions { width: 100%; }
  .btn { width: 100%; }
  .battery-visual { min-height: 220px; }
  section { padding: 56px 0; }
  footer .container { align-items: flex-start; flex-direction: column; }
}