.page-khuyen-mai-uu-dai-dang-ky-moi {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333333; /* Text Main */
  background-color: #F5F7FA; /* Background */
}

.page-khuyen-mai-uu-dai-dang-ky-moi__hero-section {
  position: relative;
  padding-top: 10px; /* Small top padding */
  margin-bottom: 40px;
  background-color: #F5F7FA;
  overflow: hidden;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__hero-image-wrapper {
  width: 100%;
  max-height: 600px; /* Limit height of hero image */
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__hero-content {
  max-width: 960px;
  margin: 20px auto 0 auto;
  padding: 0 20px 40px;
  text-align: center;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__main-title {
  font-size: clamp(2em, 4vw, 2.8em);
  color: #E53935;
  font-weight: 700;
  margin-bottom: 15px;
  line-height: 1.2;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__hero-description {
  font-size: 1.1em;
  margin-bottom: 30px;
  color: #333333;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__hero-cta-buttons {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: all 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__btn--primary {
  background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%); /* Button gradient */
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 15px rgba(229, 57, 53, 0.4);
}

.page-khuyen-mai-uu-dai-dang-ky-moi__btn--primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.page-khuyen-mai-uu-dai-dang-ky-moi__btn--secondary {
  background: #FFFFFF; /* Card BG */
  color: #E53935;
  border: 2px solid #E53935;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__btn--secondary:hover {
  background: #E53935;
  color: #ffffff;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__content-section {
  padding: 40px 0;
  margin-bottom: 30px;
  background-color: #F5F7FA;
  border-radius: 10px;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__article-wrap {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__section-title {
  font-size: 2.2em;
  color: #E53935;
  font-weight: 700;
  text-align: center;
  margin-bottom: 30px;
  padding-top: 20px;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__text-block {
  font-size: 1.05em;
  margin-bottom: 20px;
  color: #333333;
  line-height: 1.7;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__figure {
  margin: 30px 0;
  text-align: center;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__image {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.page-khuyen-mai-uu-dai-dang-ky-moi__figcaption {
  font-size: 0.9em;
  color: #666666;
  margin-top: 10px;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__promo-grid,
.page-khuyen-mai-uu-dai-dang-ky-moi__steps-grid,
.page-khuyen-mai-uu-dai-dang-ky-moi__advantage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 30px;
  margin-bottom: 40px;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__promo-card,
.page-khuyen-mai-uu-dai-dang-ky-moi__step-card,
.page-khuyen-mai-uu-dai-dang-ky-moi__advantage-card {
  background: #FFFFFF; /* Card BG */
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid #E0E0E0; /* Border */
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__promo-card:hover,
.page-khuyen-mai-uu-dai-dang-ky-moi__step-card:hover,
.page-khuyen-mai-uu-dai-dang-ky-moi__advantage-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.page-khuyen-mai-uu-dai-dang-ky-moi__card-title,
.page-khuyen-mai-uu-dai-dang-ky-moi__step-title {
  font-size: 1.5em;
  color: #E53935;
  font-weight: 600;
  margin-bottom: 15px;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__card-text,
.page-khuyen-mai-uu-dai-dang-ky-moi__step-text {
  font-size: 1em;
  color: #333333;
  line-height: 1.6;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__step-number {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: #FF5A4F;
  color: #ffffff;
  font-size: 1.8em;
  font-weight: bold;
  margin-bottom: 20px;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__cta-bottom {
  text-align: center;
  margin-top: 40px;
  margin-bottom: 20px;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__faq-list {
  margin-top: 30px;
  margin-bottom: 40px;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__faq-item {
  background: #FFFFFF; /* Card BG */
  border: 1px solid #E0E0E0; /* Border */
  border-radius: 8px;
  margin-bottom: 15px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.page-khuyen-mai-uu-dai-dang-ky-moi__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.2em;
  font-weight: 600;
  color: #E53935;
  cursor: pointer;
  list-style: none; /* For <summary> */
}

.page-khuyen-mai-uu-dai-dang-ky-moi__faq-question::-webkit-details-marker {
  display: none;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__faq-qtext {
  flex-grow: 1;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__faq-toggle {
  font-size: 1.5em;
  font-weight: bold;
  color: #FF5A4F;
  margin-left: 15px;
  transition: transform 0.3s ease;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__faq-item[open] .page-khuyen-mai-uu-dai-dang-ky-moi__faq-toggle {
  transform: rotate(45deg);
}

.page-khuyen-mai-uu-dai-dang-ky-moi__faq-answer {
  padding: 0 25px 20px;
  font-size: 1em;
  color: #333333;
  line-height: 1.6;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__final-cta-section {
  background-color: #E53935;
  color: #ffffff;
  padding: 60px 20px;
  text-align: center;
  margin-top: 40px;
  border-radius: 10px;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__final-cta-title {
  font-size: 2.5em;
  font-weight: 700;
  margin-bottom: 20px;
  color: #ffffff;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__final-cta-description {
  font-size: 1.2em;
  margin-bottom: 30px;
  color: #f0f0f0;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__final-cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__final-cta-buttons .page-khuyen-mai-uu-dai-dang-ky-moi__btn--primary {
  background: #ffffff;
  color: #E53935;
  box-shadow: none;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__final-cta-buttons .page-khuyen-mai-uu-dai-dang-ky-moi__btn--primary:hover {
  background: #f0f0f0;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__final-cta-buttons .page-khuyen-mai-uu-dai-dang-ky-moi__btn--secondary {
  background: transparent;
  color: #ffffff;
  border: 2px solid #ffffff;
}

.page-khuyen-mai-uu-dai-dang-ky-moi__final-cta-buttons .page-khuyen-mai-uu-dai-dang-ky-moi__btn--secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* --- Responsive Styles --- */

@media (max-width: 1024px) {
  .page-khuyen-mai-uu-dai-dang-ky-moi__hero-content {
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__main-title {
    font-size: clamp(2em, 5vw, 2.5em);
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__section-title {
    font-size: 2em;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__promo-grid,
  .page-khuyen-mai-uu-dai-dang-ky-moi__steps-grid,
  .page-khuyen-mai-uu-dai-dang-ky-moi__advantage-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__final-cta-title {
    font-size: 2.2em;
  }
}

@media (max-width: 768px) {
  /* 1. 顶区标题 + 双 CTA */
  .page-khuyen-mai-uu-dai-dang-ky-moi__hero-section {
    padding-top: 10px !important; /* Fixed small top padding */
    margin-bottom: 20px;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__hero-content {
    padding-left: 15px !important;
    padding-right: 15px !important;
    padding-bottom: 20px !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__main-title {
    font-size: clamp(1.8em, 7vw, 2.2em) !important;
    margin-bottom: 10px !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__hero-description {
    font-size: 1em !important;
    margin-bottom: 20px !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__hero-cta-buttons {
    flex-direction: column !important;
    gap: 10px !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__btn {
    max-width: 100% !important;
    width: 100% !important;
    padding: 12px 20px !important;
    font-size: 1em !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  /* 2. 单栏长文容器 */
  .page-khuyen-mai-uu-dai-dang-ky-moi__article-wrap {
    padding: 0 15px !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__content-section {
    padding: 20px 0 !important;
    margin-bottom: 20px !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__section-title {
    font-size: 1.8em !important;
    margin-bottom: 20px !important;
    padding-top: 10px !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__text-block {
    font-size: 0.95em !important;
    margin-bottom: 15px !important;
  }

  /* 3. 通用图片与 figure */
  .page-khuyen-mai-uu-dai-dang-ky-moi__image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    border-radius: 6px !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1) !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__figure {
    margin: 20px 0 !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__figcaption {
    font-size: 0.85em !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__promo-grid,
  .page-khuyen-mai-uu-dai-dang-ky-moi__steps-grid,
  .page-khuyen-mai-uu-dai-dang-ky-moi__advantage-grid {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
    margin-top: 20px !important;
    margin-bottom: 30px !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__promo-card,
  .page-khuyen-mai-uu-dai-dang-ky-moi__step-card,
  .page-khuyen-mai-uu-dai-dang-ky-moi__advantage-card {
    padding: 20px !important;
    border-radius: 8px !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__card-title,
  .page-khuyen-mai-uu-dai-dang-ky-moi__step-title {
    font-size: 1.3em !important;
    margin-bottom: 10px !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__card-text,
  .page-khuyen-mai-uu-dai-dang-ky-moi__step-text {
    font-size: 0.95em !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__step-number {
    width: 40px !important;
    height: 40px !important;
    font-size: 1.5em !important;
    margin-bottom: 15px !important;
  }

  /* 4. 按钮与按钮容器 */
  .page-khuyen-mai-uu-dai-dang-ky-moi__cta-bottom {
    margin-top: 30px !important;
    margin-bottom: 10px !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__final-cta-section {
    padding: 40px 15px !important;
    margin-top: 30px !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__final-cta-title {
    font-size: 2em !important;
    margin-bottom: 15px !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__final-cta-description {
    font-size: 1em !important;
    margin-bottom: 25px !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__final-cta-buttons {
    flex-direction: column !important;
    gap: 10px !important;
  }

  /* 5. FAQ 区块 */
  .page-khuyen-mai-uu-dai-dang-ky-moi__faq-list {
    margin-top: 20px !important;
    margin-bottom: 30px !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__faq-item {
    margin-bottom: 10px !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__faq-question {
    padding: 15px 20px !important;
    font-size: 1.1em !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__faq-toggle {
    font-size: 1.3em !important;
    margin-left: 10px !important;
  }
  .page-khuyen-mai-uu-dai-dang-ky-moi__faq-answer {
    padding: 0 20px 15px !important;
    font-size: 0.95em !important;
  }
}