* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f7f9fb;
  color: #17202a;
  line-height: 1.6;
}

/* HEADER */

header {
  background: #071827;
  color: white;
  padding: 6px 20px;
  border-top: 4px solid #1f7a68;
}

.nav {
  max-width: 1200px;
  margin: auto;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo-wrap {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-img {
  height: 54px;
  max-width: 190px;
  object-fit: contain;
  display: block;
}

nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

nav a {
  color: white;
  text-decoration: none;
  margin-left: 0;
  font-size: 15px;
  font-weight: 600;
  transition: color 0.2s ease;
}

nav a:hover {
  color: #ffb000;
  text-decoration: none;
}

/* HERO SECTION */

.hero {
  position: relative;
  min-height: 560px;
  background: #071827;
  color: white;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 70px 20px;
}

.hero-bg {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 35%;
  z-index: 1;
  opacity: 1;
  background: #071827;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  background: #071827;
}

/* LEFT HERO IMAGE */

.hero-bg-left {
  left: 0;
}

.hero-bg-left::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(7, 24, 39, 0.15) 0%,
    rgba(7, 24, 39, 0.2) 80%,
    rgba(7, 24, 39, 1) 100%
  );
}

/* RIGHT HERO IMAGE */

.hero-bg-right {
  right: 0;
}

.hero-bg-right::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to left,
    rgba(7, 24, 39, 0.15) 0%,
    rgba(7, 24, 39, 0.2) 80%,
    rgba(7, 24, 39, 1) 100%
  );
}

/* CENTER DARK FADE */

.hero-dark-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: radial-gradient(
    circle at center,
    rgba(7, 24, 39, 0.95) 0%,
    rgba(7, 24, 39, 0.82) 36%,
    rgba(7, 24, 39, 0.25) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 780px;
  text-align: center;
  padding: 20px;
}

.hero h1 {
  font-size: 54px;
  line-height: 1.08;
  margin: 0 0 22px;
  color: white;
  text-shadow: 0 4px 18px rgba(0, 0, 0, 0.45);
}

.hero p {
  max-width: 690px;
  margin: 0 auto 34px;
  font-size: 21px;
  color: white;
  text-shadow: 0 3px 12px rgba(0, 0, 0, 0.45);
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* BUTTONS */

.button {
  display: inline-block;
  background: #ffb000;
  color: #111;
  padding: 14px 22px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition:
    transform 0.2s ease,
    background 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
  background: #ffc13d;
}

.button.secondary {
  background: white;
  color: #111;
}

.button.secondary:hover {
  background: #f2f2f2;
}

/* SECTIONS */

.section {
  max-width: 1100px;
  margin: auto;
  padding: 48px 20px;
}

.section h2 {
  font-size: 32px;
  margin-top: 0;
}

/* CARDS */

.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.card {
  background: white;
  padding: 22px;
  border-radius: 14px;
  border: 1px solid #e3e9ef;
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.04);
}

.card h3 {
  margin-top: 0;
}

/* PRODUCTS PAGE */

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.product {
  background: white;
  padding: 26px;
  border-radius: 14px;
  border: 1px solid #e3e9ef;
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.04);
}

.product-img {
  width: 100%;
  max-height: 420px;
  object-fit: contain;
  background: #eef4f8;
  border-radius: 14px;
  margin-bottom: 18px;
  padding: 12px;
}

/* SPEC TABLE */

.specs {
  width: 100%;
  border-collapse: collapse;
  margin-top: 18px;
}

.specs th,
.specs td {
  border: 1px solid #d8e1e8;
  padding: 12px;
  text-align: left;
}

.specs th {
  background: #eef4f8;
}

/* NOTICE BOX */

.notice {
  background: #fff8e5;
  border-left: 5px solid #ffb000;
  padding: 16px;
  border-radius: 8px;
  margin-top: 18px;
}

/* FOOTER */

footer {
  background: #071827;
  color: white;
  padding: 28px 20px;
  text-align: center;
  margin-top: 40px;
}

footer a {
  color: #ffb000;
}

/* MOBILE */

@media (max-width: 800px) {
  header {
    padding: 10px 16px;
  }

  .nav {
    min-height: auto;
    display: block;
    text-align: center;
  }

  .logo-wrap {
    justify-content: center;
    margin-bottom: 10px;
  }

  .logo-img {
    height: 48px;
  }

  nav {
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
  }

  nav a {
    display: inline-block;
    margin: 0;
    font-size: 14px;
  }

  .hero {
    min-height: auto;
    padding: 80px 16px;
  }

  .hero-bg {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 75%;
    z-index: 1;
    opacity: 0.4;
  }

  .hero-bg-left {
    left: -20%;
  }

  .hero-bg-right {
    right: -20%;
  }

  .hero-content {
    padding: 10px;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero p {
    font-size: 18px;
  }

  .cards {
    grid-template-columns: 1fr;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .product-img {
    max-height: 360px;
  }
}

/* BUY BUTTONS */

.buy-button {
  display: block;
  width: 100%;
  margin-top: 18px;
  padding: 16px 20px;
  background: #ffb000;
  color: #111 !important;
  text-align: center;
  border-radius: 10px;
  font-size: 18px;
  font-weight: bold;
  text-decoration: none !important;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  transition:
    transform 0.2s ease,
    background 0.2s ease,
    box-shadow 0.2s ease;
}

.buy-button:hover {
  background: #ffc13d;
  color: #111 !important;
  text-decoration: none !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.18);
}