:root {
  --color-bg: #FFFFFF;
  --color-card: #F9FAFB;
  --color-text-main: #111827;
  --color-text-muted: #6B7280;
  --color-border: #E5E7EB;
  
  --color-verify: #059669; /* Xanh kiểm chứng */
  --color-warning: #DC2626; /* Đỏ cảnh báo */
  --color-dark: #000000;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-table: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

body {
  background-color: var(--color-bg);
  color: var(--color-text-main);
  font-family: 'Be Vietnam Pro', sans-serif;
  -webkit-font-smoothing: antialiased;
}

.hero {
  padding: 6rem 1rem 4rem;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
}

.hero-content p {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 500px;
}

/* Compare Table Metaphor */
.hero-visual {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  box-shadow: var(--shadow-table);
  overflow: hidden;
}

.table-header {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  background: var(--color-dark);
  color: white;
  padding: 1.5rem;
  font-weight: 700;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  padding: 1.5rem;
  border-bottom: 1px solid var(--color-border);
  align-items: center;
  transition: background-color 0.2s;
}

.table-row:hover {
  background-color: var(--color-card);
}

.table-row:last-child {
  border-bottom: none;
  background-color: #F3F4F6;
  font-weight: 700;
}

.item-name {
  display: flex;
  flex-direction: column;
}

.item-desc {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.price-fake {
  color: var(--color-text-muted);
  text-decoration: line-through;
  font-weight: 500;
}

.price-real {
  font-weight: 700;
  color: var(--color-warning);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.price-real.verified {
  color: var(--color-verify);
}

.badge-hidden {
  background: rgba(220, 38, 38, 0.1);
  color: var(--color-warning);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
}

/* Features */
.features {
  max-width: 1200px;
  margin: 0 auto 6rem;
  padding: 0 1rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  padding: 2rem;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: var(--color-bg);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 1rem 0 0.5rem;
}

.feature-card p {
  color: var(--color-text-muted);
  line-height: 1.6;
}

.btn-primary {
  background: var(--color-dark);
  color: white;
  padding: 1rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  transition: opacity 0.2s;
}

.btn-primary:hover {
  opacity: 0.9;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: 4rem;
  }
  .hero-content p {
    margin: 0 auto 2rem;
  }
  .features {
    grid-template-columns: 1fr;
  }
}