.page-support {
  font-family: 'Arial', sans-serif;
  color: #E0E0E0; /* Màu chữ nhạt trên nền tối */
  background-color: #1A202C; /* Nền tối chính */
  line-height: 1.6;
}

.page-support .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.page-support .section-title {
  font-size: 2.5em;
  color: #FFD700; /* Màu vàng kim */
  text-align: center;
  margin-bottom: 20px;
  font-weight: bold;
}

.page-support .section-description {
  font-size: 1.1em;
  color: #B0B0B0;
  text-align: center;
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-support .cta-button {
  display: inline-block;
  padding: 15px 30px;
  background-color: #FFD700; /* Màu vàng kim */
  color: #1A202C; /* Chữ tối trên nền vàng */
  text-decoration: none;
  border-radius: 8px;
  font-weight: bold;
  font-size: 1.1em;
  transition: background-color 0.3s ease, transform 0.3s ease;
  border: none;
  cursor: pointer;
}

.page-support .cta-button:hover {
  background-color: #FFC107; /* Vàng đậm hơn khi hover */
  transform: translateY(-2px);
}

.page-support .cta-button.secondary {
  background-color: #333C4A; /* Màu nền phụ cho nút */
  color: #FFD700; /* Chữ vàng trên nền tối */
  border: 1px solid #FFD700;
}

.page-support .cta-button.secondary:hover {
  background-color: #4A5568;
  border-color: #FFC107;
}

/* Hero Section */
.page-support .hero-support-banner {
  position: relative;
  width: 100%;
  height: 450px; /* Chiều cao cố định cho banner */
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.page-support .hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.page-support .hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6); /* Lớp phủ tối để chữ dễ đọc */
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.page-support .hero-title {
  font-size: 3.5em;
  color: #FFD700;
  margin-bottom: 15px;
  font-weight: bold;
}

.page-support .hero-subtitle {
  font-size: 1.3em;
  color: #E0E0E0;
  max-width: 800px;
  margin-bottom: 30px;
}

/* Support Channels */
.page-support .support-channels {
  padding: 60px 0;
  background-color: #2D3748; /* Nền phụ */
}

.page-support .channels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.page-support .channel-item {
  background-color: #1A202C;
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid #333C4A;
}

.page-support .channel-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.page-support .channel-icon {
  width: 80px;
  height: 80px;
  margin-bottom: 20px;
  object-fit: contain;
}

.page-support .channel-title {
  font-size: 1.6em;
  color: #FFD700;
  margin-bottom: 15px;
}

.page-support .channel-text {
  color: #B0B0B0;
  font-size: 1em;
  margin-bottom: 20px;
}

.page-support .channel-link {
  display: inline-block;
  color: #FFD700;
  text-decoration: none;
  font-weight: bold;
  border-bottom: 2px solid #FFD700;
  padding-bottom: 5px;
  transition: color 0.3s ease, border-color 0.3s ease;
}

.page-support .channel-link:hover {
  color: #FFC107;
  border-color: #FFC107;
}

/* Quick Guides */
.page-support .quick-guides {
  padding: 60px 0;
}

.page-support .guides-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.page-support .guide-item {
  background-color: #2D3748;
  padding: 20px;
  border-radius: 10px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid #333C4A;
}

.page-support .guide-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.page-support .guide-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
}

.page-support .guide-title {
  font-size: 1.5em;
  color: #FFD700;
  margin-bottom: 10px;
}

.page-support .guide-text {
  color: #B0B0B0;
  font-size: 0.95em;
  margin-bottom: 20px;
}

.page-support .guide-button {
  display: inline-block;
  padding: 10px 20px;
  background-color: #FFD700;
  color: #1A202C;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
  font-size: 0.95em;
  transition: background-color 0.3s ease, transform 0.3s ease;
}

.page-support .guide-button:hover {
  background-color: #FFC107;
  transform: translateY(-2px);
}

/* FAQ Section */
.page-support .faq-section {
  padding: 60px 0;
  background-color: #1A202C;
}

.page-support .faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 15px;
  border: 1px solid #333C4A;
  border-radius: 8px;
  background-color: #2D3748;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  background: #2D3748;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.faq-question:hover {
  background: #333C4A;
}

.faq-question h3 {
  margin: 0;
  font-size: 1.25em;
  color: #FFD700; /* Vàng kim cho câu hỏi */
  font-weight: 600;
}

.faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: #FFD700; /* Vàng kim cho dấu +/- */
  transition: transform 0.3s ease;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out, padding 0.4s ease-out;
  padding: 0 25px;
  color: #B0B0B0;
}

.faq-answer p {
  margin-bottom: 15px;
  padding-top: 10px;
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  max-height: 500px; /* Đủ cao để chứa nội dung */
  padding: 15px 25px 25px;
  background: #1A202C; /* Nền tối hơn cho câu trả lời */
  border-radius: 0 0 8px 8px;
  border-top: 1px solid #333C4A;
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
  color: #FFC107;
}

.page-support .faq-link {
  display: inline-block;
  color: #FFD700;
  text-decoration: none;
  font-weight: bold;
  border-bottom: 1px solid #FFD700;
  padding-bottom: 2px;
  transition: color 0.3s ease, border-color 0.3s ease;
}

.page-support .faq-link:hover {
  color: #FFC107;
  border-color: #FFC107;
}

/* Policies Section */
.page-support .policies-section {
  padding: 60px 0;
  background-color: #2D3748;
}

.page-support .policies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.page-support .policy-item {
  background-color: #1A202C;
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid #333C4A;
}

.page-support .policy-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.page-support .policy-icon {
  width: 80px;
  height: 80px;
  margin-bottom: 20px;
  object-fit: contain;
}

.page-support .policy-title {
  font-size: 1.6em;
  color: #FFD700;
  margin-bottom: 15px;
}

.page-support .policy-text {
  color: #B0B0B0;
  font-size: 1em;
  margin-bottom: 20px;
}

.page-support .policy-link {
  display: inline-block;
  color: #FFD700;
  text-decoration: none;
  font-weight: bold;
  border-bottom: 2px solid #FFD700;
  padding-bottom: 5px;
  transition: color 0.3s ease, border-color 0.3s ease;
}

.page-support .policy-link:hover {
  color: #FFC107;
  border-color: #FFC107;
}

/* Contact Promo Section */
.page-support .contact-promo {
  padding: 80px 0;
  text-align: center;
  background: linear-gradient(135deg, #1A202C, #2D3748);
}

.page-support .promo-content {
  max-width: 800px;
  margin: 0 auto;
}

.page-support .promo-title {
  font-size: 2.8em;
  color: #FFD700;
  margin-bottom: 20px;
}

.page-support .promo-text {
  font-size: 1.2em;
  color: #E0E0E0;
  margin-bottom: 40px;
}

/* Responsive Design */
@media (max-width: 992px) {
  .page-support .hero-title {
    font-size: 2.8em;
  }
  .page-support .hero-subtitle {
    font-size: 1.1em;
  }
  .page-support .section-title {
    font-size: 2em;
  }
  .page-support .channel-item, .page-support .guide-item, .page-support .policy-item {
    padding: 25px;
  }
  .faq-question h3 {
    font-size: 1.1em;
  }
  .page-support .promo-title {
    font-size: 2.2em;
  }
}

@media (max-width: 768px) {
  .page-support .hero-support-banner {
    height: 400px;
  }
  .page-support .hero-title {
    font-size: 2.2em;
  }
  .page-support .hero-subtitle {
    font-size: 1em;
  }
  .page-support .cta-button {
    padding: 12px 25px;
    font-size: 1em;
  }
  .page-support .channels-grid, .page-support .guides-grid, .page-support .policies-grid {
    grid-template-columns: 1fr;
  }
  .page-support .channel-item, .page-support .guide-item, .page-support .policy-item {
    padding: 20px;
  }
  .page-support .channel-icon, .page-support .policy-icon {
    width: 60px;
    height: 60px;
  }
  .faq-question {
    padding: 15px 20px;
  }
  .faq-question h3 {
    font-size: 1em;
  }
  .faq-toggle {
    font-size: 20px;
  }
  .faq-answer {
    padding: 0 20px;
  }
  .faq-item.active .faq-answer {
    padding: 15px 20px 20px;
  }
  .page-support .promo-title {
    font-size: 1.8em;
  }
  .page-support .promo-text {
    font-size: 1em;
  }
}

@media (max-width: 480px) {
  .page-support .hero-support-banner {
    height: 350px;
  }
  .page-support .hero-title {
    font-size: 1.8em;
  }
  .page-support .hero-subtitle {
    font-size: 0.9em;
  }
  .page-support .section-title {
    font-size: 1.6em;
  }
  .page-support .section-description {
    font-size: 0.9em;
  }
  .page-support .channel-title, .page-support .guide-title, .page-support .policy-title {
    font-size: 1.3em;
  }
  .page-support .channel-text, .page-support .guide-text, .page-support .policy-text {
    font-size: 0.85em;
  }
  .page-support .cta-button {
    padding: 10px 20px;
    font-size: 0.9em;
  }
}