:root {
  --font-serif: "Noto Serif JP", "Hiragino Mincho ProN", "MS Mincho", serif;
  --color-slate-900: #0f172a;
  --color-emerald-50: #ecfdf5;
  --color-emerald-100: #d1fae5;
  --color-emerald-200: #a7f3d0;
  --color-emerald-300: #6ee7b7;
  --color-emerald-400: #34d399;
  --color-emerald-500: #10b981;
  --color-emerald-600: #059669;
  --color-emerald-700: #047857;
  --color-bg-light: #e6f7ef;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: var(--color-slate-900);
  background-color: white;
  font-size: 1rem;
}

@media (min-width: 1024px) {
  body {
    font-size: 1.125rem;
  }
}

.page-container {
  min-height: 100vh;
  padding-top: 100px;
  padding-bottom: 2.5rem;
  padding-left: 1rem;
  padding-right: 1rem;
}

@media (min-width: 640px) {
  .page-container {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
}

@media (min-width: 1024px) {
  .page-container {
    padding-top: 120px;
    padding-bottom: 4rem;
    padding-left: 3rem;
    padding-right: 3rem;
  }
}

.content-wrapper {
  max-width: 72rem;
  margin-left: auto;
  margin-right: auto;
}

.section {
  margin-bottom: 2.5rem;
}

@media (min-width: 1024px) {
  .section {
    margin-bottom: 4rem;
  }
}

.section-header {
  display: inline-block;
  margin-bottom: 1rem;
  border-bottom: 2px solid var(--color-emerald-500);
  padding-bottom: 0.25rem;
}

@media (min-width: 1024px) {
  .section-header {
    margin-bottom: 1.5rem;
    border-bottom: 3px solid var(--color-emerald-500);
    padding-bottom: 0.5rem;
  }
}

.section-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  line-height: 2rem;
  font-weight: 500;
  color: var(--color-emerald-600);
}

@media (min-width: 1024px) {
  .section-title {
    font-size: 2rem;
    line-height: 2.5rem;
  }
}

.section-content {
  background-color: var(--color-bg-light);
  border-radius: 0.5rem;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.accordion-item {
  width: 100%;
}

.exam-button {
  width: 100%;
  background-color: white;
  border-radius: 0.25rem;
  border: 1px solid var(--color-emerald-500);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  list-style: none;
  transition: all 200ms ease;
}

.exam-button::-webkit-details-marker {
  display: none;
}

.exam-button:hover {
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.1);
}

.exam-button-text {
  color: var(--color-emerald-600);
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.icon-circle-outline {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1.5px solid var(--color-emerald-600);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-emerald-600);
  transition: transform 300ms ease;
}

.accordion-item[open] .icon-circle-outline {
  transform: rotate(90deg);
}

/* SVG Icon Styles */
.icon-chevron-right {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 1.5;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-chevron-down {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sub-items-container {
  padding: 1rem 0 0.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.sub-exam-card {
  width: fit-content;
  min-width: 240px;
  background-color: white;
  border: 1px solid var(--color-emerald-500);
  border-radius: 0.25rem;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: all 200ms ease;
}

.sub-exam-card:hover {
  background-color: var(--color-emerald-50);
  transform: translateX(4px);
}

.sub-exam-card-text {
  color: var(--color-emerald-600);
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
}

.sub-card-icon {
  color: var(--color-emerald-600);
  margin-left: 0.75rem;
}

.sub-exam-button-text {
  color: var(--color-emerald-700);
  font-family: var(--font-serif);
  font-size: 1rem;
  text-align: left;
}

@media (min-width: 1024px) {
  .sub-exam-button-text {
    font-size: 1.125rem;
  }
}

.sub-icon {
  color: var(--color-emerald-500);
  margin-left: 0.5rem;
}