.page-faq {
  --faq-rail-w: 200px;
  --faq-gap: 20px;
  padding-bottom: 72px;
}

.page-faq .faq-intro {
  position: relative;
  margin: 8px 0 28px;
  padding: 26px 0 26px;
  border-bottom: 1px solid var(--line);
  background-image: repeating-linear-gradient(
    90deg,
    transparent 0 79px,
    rgba(30, 74, 63, 0.22) 79px 80px
  );
}

.page-faq .faq-intro__lead {
  max-width: 700px;
  margin: 14px 0 18px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-intro__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-intro h1 {
  margin: 10px 0 0;
  font-size: clamp(30px, 5.2vw, 54px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--text);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-faq .faq-rail {
  align-self: start;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  background: var(--board);
  padding: 14px 14px 16px;
}

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 6px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--text);
  text-decoration: none;
  border-radius: var(--radius);
  border-bottom: 1px solid rgba(30, 74, 63, 0.4);
  transition: background-color 0.18s ease, color 0.18s ease;
}

.page-faq .faq-rail__idx {
  font-size: 12px;
  color: var(--cyan);
  flex: 0 0 auto;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  background: rgba(0, 242, 195, 0.08);
  color: var(--cyan-soft);
  outline: none;
}

.page-faq .faq-rail__link:focus-visible {
  box-shadow: inset 0 0 0 1px var(--cyan);
}

.page-faq .faq-main {
  min-width: 0;
  display: grid;
  gap: 34px;
}

.page-faq .faq-section {
  min-width: 0;
  padding-top: 4px;
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.page-faq .faq-section__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}

.page-faq .faq-section__num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--cyan);
  letter-spacing: 0.02em;
  flex: 0 0 auto;
}

.page-faq .faq-section h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  font-weight: 900;
  color: var(--text);
}

.page-faq .faq-section__lead {
  max-width: 680px;
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-section__note {
  max-width: 680px;
  margin: 16px 0 0;
  padding: 12px 14px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
  border-left: 2px solid var(--line);
  background: rgba(18, 51, 43, 0.5);
}

.page-faq .faq-section__link {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin: 20px 0 0;
}

.page-faq .faq-section__link-note {
  font-size: 14px;
  color: var(--muted);
}

.page-faq .step-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 16px;
}

.page-faq .step-jump__link {
  display: inline-block;
  padding: 6px 10px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(0, 242, 195, 0.05);
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .step-jump__link:hover,
.page-faq .step-jump__link:focus-visible {
  border-color: var(--cyan);
  background: rgba(0, 242, 195, 0.14);
  outline: none;
}

.page-faq .step-list {
  counter-reset: step;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .step-item {
  position: relative;
  counter-increment: step;
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 16px 16px 12px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .step-item::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1.1;
  color: var(--cyan);
  letter-spacing: -0.02em;
}

.page-faq .step-item:not(:last-child)::after {
  content: "";
  position: absolute;
  left: -3px;
  bottom: -15px;
  width: 3px;
  height: 15px;
  background: linear-gradient(180deg, var(--cyan), transparent);
}

.page-faq .step-item__body {
  min-width: 0;
}

.page-faq .step-item__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
}

.page-faq .step-item__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .compare {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 22px;
}

.page-faq .compare__col {
  min-width: 0;
  padding: 14px 14px 16px;
  background: var(--board);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .compare__label {
  margin: 0 0 12px;
}

.page-faq .compare__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .compare__list li {
  position: relative;
  padding-left: 14px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text);
}

.page-faq .compare__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-faq .compare__list-diff {
  border-left: 2px solid var(--orange);
  padding-left: 14px !important;
  background: rgba(255, 138, 43, 0.07);
}

.page-faq .compare__list-diff::before {
  background: var(--orange) !important;
  left: 6px !important;
}

.page-faq .faq-callout {
  margin-top: 4px;
  padding: 16px 16px 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--orange-soft);
  border-radius: var(--radius);
}

.page-faq .faq-callout__title {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--orange-soft);
}

.page-faq .faq-callout__text {
  margin: 0;
  max-width: 640px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .lineup-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .lineup-card {
  padding: 14px 16px 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .lineup-card__num {
  margin: 0 0 8px;
  font-size: 30px;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -0.01em;
}

.page-faq .lineup-card__num span {
  margin-left: 4px;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.page-faq .lineup-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text);
}

.page-faq .qa-list {
  display: grid;
  gap: 10px;
}

.page-faq .qa {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .qa summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
}

.page-faq .qa summary::-webkit-details-marker {
  display: none;
}

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .qa__mark {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--orange);
  flex: 0 0 auto;
}

.page-faq .qa__q {
  min-width: 0;
}

.page-faq .qa__chev {
  margin-left: auto;
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
  transition: transform 0.18s ease;
}

.page-faq .qa[open] .qa__chev {
  transform: rotate(90deg);
}

.page-faq .qa[open] {
  border-color: var(--cyan);
}

.page-faq .qa__body {
  padding: 0 16px 16px;
  border-top: 1px dashed var(--line);
  margin-top: -1px;
  padding-top: 12px;
}

.page-faq .qa__body p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .qa__body p:last-child {
  margin-bottom: 0;
}

.page-faq .ask-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .ask-card {
  padding: 14px 16px 16px;
  background: var(--board);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
}

.page-faq .ask-card__key {
  margin: 0 0 6px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .ask-card__val {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
  word-break: break-word;
}

.page-faq .ask-card__note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--muted);
}

.page-faq .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .media-frame {
  margin: 20px 0 0;
}

@media (min-width: 640px) {
  .page-faq .lineup-grid,
  .page-faq .ask-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .compare {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 0;
    border: 1px solid var(--line);
    background: var(--board);
    border-radius: var(--radius);
  }

  .page-faq .compare__col {
    border: 0;
    border-radius: 0;
    background: transparent;
    padding: 16px 18px 18px;
  }

  .page-faq .compare__col + .compare__col {
    border-left: 1px dashed var(--line);
  }

  .page-faq .faq-section h2 {
    font-size: 26px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }

  .page-faq .faq-main {
    gap: 44px;
  }

  .page-faq .faq-intro {
    padding: 34px 0 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__chev,
  .page-faq .faq-rail__link,
  .page-faq .step-jump__link {
    transition: none;
  }
}