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

html, body {
  width: 100%;
  min-height: 100%;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background: #02030a;
  color: #ffffff;
  overflow-x: hidden;
  position: relative;
}

/* Particle canvas */
#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: #02030a;
}

/* Top bar */
.topbar {
  height: 58px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 16px;
  background: rgba(10, 10, 10, 0.92);
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.topbar-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: #ffffff;
}

/* Burger */
.menu-btn {
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
}

.menu-btn span {
  width: 34px;
  height: 4px;
  border-radius: 999px;
  background: #ffffff;
  display: block;
}

/* Sidebar */
.sidebar {
  position: fixed;
  top: 58px;
  left: -240px;
  width: 220px;
  height: calc(100% - 58px);
  background: rgba(15, 15, 18, 0.98);
  border-right: 1px solid rgba(255, 255, 255, 0.04);
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: left 0.25s ease;
  z-index: 1001;
}

.sidebar.show {
  left: 0;
}

.sidebar a {
  color: #ffffff;
  text-decoration: none;
  padding: 12px 14px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  transition: background 0.2s ease;
}

.sidebar a:hover {
  background: rgba(255, 45, 45, 0.14);
}

/* Main page */
.page {
  width: 100%;
  padding: 40px 16px 70px;
}

/* Simple hero */
.hero-simple {
  text-align: center;
  padding: 120px 20px 90px;
}

.hero-simple h2 {
  font-size: clamp(2.7rem, 5vw, 4rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.hero-simple p {
  font-size: 1rem;
  color: #b8b8c0;
}

/* Section title */
.section-title {
  text-align: center;
  margin-bottom: 28px;
}

.section-title h3 {
  font-size: 2.1rem;
  font-weight: 800;
}

/* Featured strip */
.featured-box {
  width: 100%;
  max-width: 1830px;
  margin: 0 auto;
  background: rgba(24, 24, 30, 0.92);
  border-radius: 14px;
  padding: 26px 26px;
  border: 1px solid rgba(255, 255, 255, 0.03);
}

.featured-text h3 {
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.featured-text p {
  font-size: 0.98rem;
  color: #d0d0d7;
}

/* Product cards */
.product-grid {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-card {
  background: rgba(20, 20, 28, 0.95);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.03);
}

.product-image {
  height: 220px;
  background: linear-gradient(90deg, #2f2f2f 0%, #434343 50%, #2f2f2f 100%);
  opacity: 0.9;
}

.product-content {
  text-align: center;
  padding: 20px 20px 24px;
}

.product-content h4 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.product-content p {
  color: #bdbdc5;
  margin-bottom: 18px;
  font-size: 0.98rem;
}

.view-btn {
  display: inline-block;
  background: #ff3131;
  color: white;
  text-decoration: none;
  padding: 10px 22px;
  border-radius: 10px;
  font-weight: 700;
  transition: background 0.2s ease, transform 0.2s ease;
}

.view-btn:hover {
  background: #e72727;
  transform: translateY(-1px);
}

/* Responsive */
@media (max-width: 1000px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 700px) {
  .product-grid {
    grid-template-columns: 1fr;
  }

  .hero-simple {
    padding: 90px 20px 65px;
  }

  .hero-simple h2 {
    font-size: 2.4rem;
  }

  .topbar-title {
    font-size: 1rem;
  }

  .menu-btn span {
    width: 30px;
  }
}