.guide-page {
  min-height: 100%;
  background: #f4f5f7;
  color: #111827;
  line-height: 1.8;
}

.guide-page a {
  color: inherit;
}

.guide-header {
  display: flex;
  min-height: 58px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 8px max(18px, calc((100% - 860px) / 2));
  border-bottom: 1px solid #d1d5db;
  background: #fff;
}

.guide-brand {
  font-family: "Roboto", "Noto Sans JP", sans-serif;
  font-size: .94rem;
  font-weight: 700;
  text-decoration: none;
}

.guide-brand strong {
  color: var(--primary);
  font-weight: 900;
}

.guide-brand span {
  margin-left: 10px;
  padding-left: 10px;
  border-left: 1px solid #d1d5db;
  color: #6b7280;
  font-family: "Noto Sans JP", sans-serif;
  font-size: .7rem;
}

.back-to-app {
  font-size: .82rem;
  font-weight: 700;
}

.guide-main {
  width: min(860px, 100%);
  margin: 0 auto;
  padding: 44px 52px 70px;
  border-inline: 1px solid #e5e7eb;
  background: #fff;
}

.guide-main h1 {
  margin: 0;
  font-size: 2.1rem;
  letter-spacing: -.03em;
  line-height: 1.4;
}

.guide-intro {
  max-width: 690px;
  margin: 14px 0 0;
  color: #4b5563;
  font-size: 1rem;
}

.guide-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  margin: 28px 0 0;
  padding: 14px 0;
  border-block: 1px solid #d1d5db;
}

.guide-toc a {
  color: #374151;
  font-size: .84rem;
  font-weight: 700;
  text-underline-offset: 3px;
}

.guide-section {
  margin-top: 56px;
  scroll-margin-top: 20px;
}

.guide-section h2 {
  margin: 0 0 22px;
  padding-bottom: 8px;
  border-bottom: 2px solid #111827;
  font-size: 1.45rem;
  line-height: 1.5;
}

.guide-section h3 {
  margin: 26px 0 7px;
  font-size: 1.05rem;
}

.guide-section p,
.guide-section li {
  color: #374151;
  font-size: .95rem;
}

.guide-section > p {
  margin: 0 0 24px;
}

.guide-section ol {
  margin: 0;
  padding-left: 1.5em;
}

.guide-section li + li {
  margin-top: 8px;
}

.text-and-image {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  align-items: start;
  gap: 46px;
}

.plain-note,
.plain-warning {
  margin-top: 22px;
  font-size: .84rem !important;
}

.plain-warning {
  color: #b91c1c !important;
  font-weight: 700;
}

figure {
  margin: 0;
}

.screenshot-button {
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid #b9bec5;
  border-radius: 2px;
  background: #fff;
  cursor: zoom-in;
}

.screenshot-button img {
  display: block;
  width: 100%;
  height: auto;
}

figcaption {
  margin-top: 6px;
  color: #6b7280;
  font-size: .76rem;
  line-height: 1.55;
}

.two-images {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 250px));
  justify-content: center;
  gap: 34px;
  margin: 28px 0;
}

.judge-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  align-items: start;
  gap: 46px;
  padding: 28px 0;
  border-bottom: 1px solid #d1d5db;
}

.judge-section h3 {
  margin-top: 0;
}

.judge-section p {
  margin: 0;
}

.simple-list {
  margin: 26px 0 0;
  border-top: 1px solid #d1d5db;
}

.simple-list > div {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid #d1d5db;
}

.simple-list dt {
  font-size: .88rem;
  font-weight: 800;
}

.simple-list dd {
  margin: 0;
  color: #4b5563;
  font-size: .86rem;
}

.guide-section details {
  border-top: 1px solid #d1d5db;
}

.guide-section details:last-child {
  border-bottom: 1px solid #d1d5db;
}

.guide-section summary {
  padding: 14px 2px;
  cursor: pointer;
  font-size: .92rem;
  font-weight: 800;
}

.guide-section details p {
  margin: -3px 18px 14px;
  color: #4b5563;
  font-size: .86rem;
}

.guide-end {
  margin: 56px 0 0;
  padding-top: 18px;
  border-top: 1px solid #d1d5db;
  text-align: right;
}

.guide-end a {
  color: var(--primary-hover);
  font-size: .9rem;
  font-weight: 800;
  text-underline-offset: 3px;
}

.trademark-note {
  margin: 14px 0 0;
  color: #9ca3af;
  font-size: 9px;
  line-height: 1.5;
  text-align: right;
}

.image-dialog {
  width: min(430px, calc(100% - 28px));
  max-height: calc(100dvh - 28px);
  padding: 42px 12px 12px;
  border: 1px solid #6b7280;
  border-radius: 2px;
  background: #fff;
}

.image-dialog::backdrop {
  background: rgb(0 0 0 / 65%);
}

.image-dialog img {
  display: block;
  width: 100%;
  height: auto;
  max-height: calc(100dvh - 100px);
  object-fit: contain;
}

.image-dialog p {
  margin: 8px 0 0;
  color: #4b5563;
  font-size: .7rem;
}

.dialog-close {
  position: absolute;
  top: 7px;
  right: 8px;
  min-height: 30px;
  padding: 3px 8px;
  border: 1px solid #c6c6c6;
  border-radius: 2px;
  background: #fff;
  cursor: pointer;
  font-size: .7rem;
  font-weight: 700;
}

@media (max-width: 640px) {
  .guide-header {
    padding-inline: 14px;
  }

  .guide-main {
    padding: 32px 20px 56px;
    border-inline: 0;
  }

  .guide-main h1 {
    font-size: 1.7rem;
  }

  .guide-section {
    margin-top: 46px;
  }

  .text-and-image,
  .judge-section {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .text-and-image figure,
  .judge-section figure,
  .two-images figure {
    width: min(270px, 100%);
    margin: 0 auto;
  }

  .two-images {
    grid-template-columns: 1fr;
  }

  .simple-list > div {
    grid-template-columns: 100px minmax(0, 1fr);
  }
}