.page-register {
  --primary-color: #C61F1F;
  --secondary-color: #E53030;
  --button-gradient: linear-gradient(180deg, #FFB04A 0%, #D86A14 100%);
  --card-bg: #2A1212;
  --body-bg: #140C0C; /* From custom配色 */
  --text-main-color: #FFF1E8; /* From custom配色 */
  --border-color: #6A1E1E;
  --gold-color: #F3C54D;
  --deep-red-color: #7E0D0D;

  color: var(--text-main-color); /* Ensure text is light on dark body background */
  background-color: var(--body-bg);
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

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

.page-register__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: 10px; /* Small top padding, body handles --header-offset */
  background-color: var(--deep-red-color);
}

.page-register__hero-image-wrapper {
  width: 100%;
  max-height: 675px; /* Limit height for hero image */
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-register__hero-image {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

.page-register__hero-content {
  padding: 40px 20px;
  text-align: center;
  max-width: 900px;
  margin-top: 20px; /* Separates content from image */
}

.page-register__main-title {
  font-size: clamp(2em, 4vw, 3.5em);
  color: var(--gold-color);
  margin-bottom: 20px;
  font-weight: bold;
  line-height: 1.2;
}

.page-register__description {
  font-size: 1.1em;
  color: var(--text-main-color);
  margin-bottom: 30px;
}

.page-register__btn {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: background-color 0.3s ease, transform 0.2s ease;
  box-sizing: border-box;
}

.page-register__btn--primary {
  background: var(--button-gradient);
  color: var(--body-bg); /* Dark text on bright gradient */
  border: none;
}

.page-register__btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.page-register__btn--large {
    padding: 18px 35px;
    font-size: 1.2em;
}

.page-register__section-title {
  font-size: clamp(1.8em, 3.5vw, 2.8em);
  color: var(--gold-color);
  text-align: center;
  margin-bottom: 30px;
  font-weight: bold;
}

.page-register__section-description {
  font-size: 1.05em;
  color: var(--text-main-color);
  text-align: center;
  max-width: 900px;
  margin: 0 auto 40px auto;
}

.page-register__benefits-section,
.page-register__registration-guide-section,
.page-register__faq-section,
.page-register__call-to-action-section {
  padding: 60px 0;
}

.page-register__dark-section {
  background-color: var(--card-bg);
  color: var(--text-main-color);
}

.page-register__benefits-grid,
.page-register__guide-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-register__card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  color: var(--text-main-color);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-register__benefit-image,
.page-register__step-image {
  width: 100%; /* Ensure images take full width of card */
  height: auto;
  max-height: 250px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
  display: block;
}

.page-register__card-title {
  font-size: 1.5em;
  color: var(--gold-color);
  margin-bottom: 15px;
  font-weight: bold;
}

.page-register__card p,
.page-register__card ul {
  font-size: 1em;
  color: var(--text-main-color);
  text-align: left;
  width: 100%;
}

.page-register__card ul {
  list-style: disc inside;
  padding-left: 20px;
  margin-top: 10px;
}

.page-register__card li {
  margin-bottom: 8px;
}

.page-register__note {
  background-color: rgba(255, 255, 255, 0.05);
  border-left: 5px solid var(--primary-color);
  padding: 15px;
  margin-top: 20px;
  border-radius: 5px;
  text-align: left;
}

.page-register__note ul {
  list-style: none;
  padding-left: 0;
}

.page-register__note li {
  margin-bottom: 5px;
}

.page-register__faq-list {
  margin-top: 40px;
}

.page-register__faq-item {
  background-color: var(--body-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  color: var(--text-main-color);
}

.page-register__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  font-size: 1.2em;
  font-weight: bold;
  color: var(--gold-color);
  cursor: pointer;
  background-color: var(--card-bg);
  user-select: none;
  transition: background-color 0.3s ease;
}

.page-register__faq-question:hover {
  background-color: rgba(var(--primary-color), 0.2);
}

.page-register__faq-item[open] .page-register__faq-question {
  background-color: var(--primary-color);
  color: #ffffff;
}

.page-register__faq-item[open] .page-register__faq-question .page-register__faq-toggle {
  color: #ffffff;
}

.page-register__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  margin-left: 15px;
  color: var(--gold-color);
}

.page-register__faq-answer {
  padding: 0 25px 20px;
  font-size: 1em;
  color: var(--text-main-color);
}

.page-register__faq-item summary::-webkit-details-marker {
  display: none;
}
.page-register__faq-item summary {
  list-style: none;
}

.page-register__text-link {
  color: var(--gold-color);
  text-decoration: underline;
}

.page-register__text-link:hover {
  color: var(--primary-color);
}

.page-register__call-to-action-section {
  text-align: center;
  background-color: var(--primary-color);
  color: #ffffff;
}

.page-register__call-to-action-section .page-register__section-title,
.page-register__call-to-action-section .page-register__section-description {
  color: #ffffff;
}

.page-register__call-to-action-section .page-register__btn--primary {
  background: var(--button-gradient);
  color: var(--body-bg); /* Dark text on bright gradient */
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-register__hero-content {
    padding: 30px 15px;
  }

  .page-register__main-title {
    font-size: clamp(1.8em, 5vw, 3em);
  }

  .page-register__section-title {
    font-size: clamp(1.6em, 4vw, 2.5em);
  }

  .page-register__benefits-grid,
  .page-register__guide-steps {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
  }

  .page-register__card {
    padding: 25px;
  }
}

@media (max-width: 768px) {
  .page-register__hero-section {
    padding: 30px 0;
    padding-top: 10px !important; /* body handles --header-offset */
  }

  .page-register__hero-content {
    padding: 20px 15px;
  }

  .page-register__main-title {
    font-size: clamp(1.6em, 6vw, 2.5em);
  }

  .page-register__description {
    font-size: 1em;
  }

  .page-register__btn {
    padding: 12px 25px;
    font-size: 1em;
  }

  .page-register__btn--large {
    padding: 15px 30px;
    font-size: 1.1em;
  }

  .page-register__benefits-section,
  .page-register__registration-guide-section,
  .page-register__faq-section,
  .page-register__call-to-action-section {
    padding: 40px 0;
  }

  .page-register__section-title {
    font-size: clamp(1.4em, 5vw, 2em);
  }

  .page-register__section-description {
    font-size: 0.95em;
    margin-bottom: 30px;
  }

  .page-register__container {
    padding-left: 15px !important;
    padding-right: 15px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-register img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-register__hero-image-wrapper,
  .page-register__benefits-grid,
  .page-register__guide-steps,
  .page-register__card,
  .page-register__faq-list,
  .page-register__faq-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  .page-register__btn,
  .page-register a[class*="button"],
  .page-register a[class*="btn"] {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding-left: 15px;
    padding-right: 15px;
    margin-bottom: 10px; /* Add some space between stacked buttons */
  }

  .page-register__hero-content .page-register__btn {
    margin: 0 auto 10px auto;
  }

  .page-register__call-to-action-section .page-register__btn--large {
    margin: 0 auto;
  }

  .page-register__faq-question {
    font-size: 1.1em;
    padding: 15px 20px;
  }

  .page-register__faq-answer {
    padding: 0 20px 15px;
  }

  .page-register__benefits-grid,
  .page-register__guide-steps {
    grid-template-columns: 1fr;
  }

  .page-register__card {
    margin-bottom: 20px;
  }
}