:root {
  --primary-color: #26A9E0;
  --secondary-color: #FFFFFF;
  --text-dark: #333333;
  --text-light: #ffffff;
  --btn-login: #EA7C07;
  --background-color: #FFFFFF;
  --black: #000000;
}

.page-support {
  font-family: 'Arial', sans-serif;
  color: var(--text-dark);
  background-color: var(--background-color);
  line-height: 1.6;
  font-size: 16px;
}

.page-support__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

/* Hero Section - Not a homepage hero, but an introductory section for support */
.page-support__hero-section {
  position: relative;
  background: linear-gradient(135deg, var(--primary-color) 0%, #4db3f0 100%); /* Lighter gradient for hero */
  color: var(--text-light);
  padding: 60px 0 80px;
  text-align: center;
  /* Fixed Header Offset */
  padding-top: calc(var(--header-offset, 120px) + 60px); /* Add 60px to offset for visual balance */
}

.page-support__main-title {
  font-size: 44px;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
  color: var(--text-light);
}

.page-support__intro-text {
  font-size: 18px;
  max-width: 800px;
  margin: 0 auto 30px;
  color: var(--text-light);
}

.page-support__cta-group {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.page-support__btn {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 17px;
  transition: all 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
}

.page-support__btn--primary {
  background-color: var(--btn-login);
  color: var(--text-light);
  border: 2px solid var(--btn-login);
}

.page-support__btn--primary:hover {
  background-color: #e06c00;
  border-color: #e06c00;
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
}

.page-support__btn--secondary {
  background-color: transparent;
  color: var(--text-light);
  border: 2px solid var(--text-light);
}

.page-support__btn--secondary:hover {
  background-color: var(--text-light);
  color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
}

.page-support__section {
  padding: 80px 0;
  background-color: var(--background-color);
}

.page-support__section--overview {
  background-color: #f8fcfd;
}

.page-support__section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 50px;
  position: relative;
  padding-bottom: 15px;
}

.page-support__section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

.page-support__content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.page-support__content-block {
  background-color: var(--secondary-color);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.page-support__content-heading {
  font-size: 24px;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 15px;
  line-height: 1.4;
}

.page-support__text {
  font-size: 16px;
  color: var(--text-dark);
  line-height: 1.7;
}

.page-support__text-center {
  text-align: center;
  font-size: 18px;
  margin-bottom: 40px;
  color: var(--text-dark);
}

.page-support__image {
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: 8px;
  margin-bottom: 25px;
  object-fit: cover;
}

/* Contact Methods Section */
.page-support__contact-methods {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-support__contact-item {
  background-color: var(--secondary-color);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-support__contact-icon {
  width: 100px;
  height: 100px;
  object-fit: contain;
  margin-bottom: 20px;
  border-radius: 50%;
  background-color: #eaf8ff;
  padding: 15px;
}

.page-support__contact-heading {
  font-size: 22px;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.page-support__contact-description {
  font-size: 15px;
  color: var(--text-dark);
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-support__btn--contact {
  background-color: var(--primary-color);
  color: var(--text-light);
  border: 2px solid var(--primary-color);
  padding: 10px 20px;
  font-size: 16px;
  max-width: 100%;
  width: auto;
}

.page-support__btn--contact:hover {
  background-color: #1e8dc7;
  border-color: #1e8dc7;
}

/* Guides Section */
.page-support__guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-support__guide-card {
  background-color: var(--secondary-color);
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
}

.page-support__guide-card:hover {
  transform: translateY(-5px);
}

.page-support__guide-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.page-support__guide-heading {
  font-size: 20px;
  font-weight: 600;
  color: var(--primary-color);
  padding: 20px 20px 10px;
  line-height: 1.3;
}

.page-support__guide-text {
  font-size: 15px;
  color: var(--text-dark);
  padding: 0 20px 20px;
  flex-grow: 1;
}

.page-support__btn--small {
  background-color: var(--primary-color);
  color: var(--text-light);
  border: 2px solid var(--primary-color);
  padding: 10px 20px;
  font-size: 14px;
  margin: 0 20px 20px;
  width: fit-content;
  align-self: flex-start;
}

.page-support__btn--small:hover {
  background-color: #1e8dc7;
  border-color: #1e8dc7;
}

/* Security Section */
.page-support__section--security {
  background-color: #f8fcfd;
}

/* FAQ Section */
.page-support__section--faq {
  padding: 80px 0;
  background-color: var(--background-color);
}

.page-support__faq-list {
  max-width: 900px;
  margin: 50px auto 0;
}

/* FAQ容器样式 */
.page-support__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

/* FAQ默认状态 - 答案隐藏 */
.page-support__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
  padding: 0 25px;
  opacity: 0;
  color: var(--text-dark);
  background: #fdfdfd;
  font-size: 15px;
  line-height: 1.7;
}

/* FAQ展开状态 - 🚨 使用!important và đủ lớn max-height để đảm bảo có thể mở rộng */
.page-support__faq-item.active .page-support__faq-answer {
  max-height: 2000px !important;
  padding: 20px 25px !important;
  opacity: 1;
  background: #fdfdfd;
  border-radius: 0 0 8px 8px;
}

/* Vấn đề kiểu dáng */
.page-support__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  background: var(--secondary-color);
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.page-support__faq-item.active .page-support__faq-question {
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  border-color: var(--primary-color);
}

.page-support__faq-question:hover {
  background: #f5f5f5;
  border-color: #d0d0d0;
}

.page-support__faq-question:active {
  background: #eeeeee;
}

/* Vấn đề tiêu đề kiểu dáng */
.page-support__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--primary-color);
  pointer-events: none;
}