/* ===== 使用指南 / guide ===== */

.page-faq {
  background: var(--c-cream);
  color: var(--c-ink);
}

.page-faq :focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: 2px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--c-ink);
  color: var(--c-cream);
  border-bottom: 1px solid var(--rule-light);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 58%;
  height: 100%;
  background: rgba(242, 107, 29, .11);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
  padding-block: 32px 44px;
}

.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--c-stone);
}

.page-faq .crumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-faq .crumbs__item + .crumbs__item::before {
  content: "/";
  color: rgba(245, 242, 234, .35);
}

.page-faq .crumbs__link {
  color: var(--c-orange-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 120ms linear;
}

.page-faq .crumbs__link:hover {
  border-bottom-color: var(--c-orange);
}

.page-faq .crumbs__current {
  color: var(--c-cream);
}

.page-faq .eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--c-orange);
}

.page-faq .display {
  margin: 0 0 16px;
  max-width: 14em;
  font-family: var(--font-display);
  font-size: clamp(30px, 6.4vw, 50px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--c-cream);
}

.page-faq .lead {
  margin: 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(245, 242, 234, .82);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--rule-light);
}

.page-faq .faq-jump__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--c-stone);
}

.page-faq .faq-jump__link {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid rgba(245, 242, 234, .32);
  border-radius: var(--radius);
  background: transparent;
  color: var(--c-cream);
  font-size: 14px;
  line-height: 1.2;
  text-decoration: none;
  transition: border-color 120ms linear, background-color 120ms linear, color 120ms linear, box-shadow 120ms linear;
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  border-color: var(--c-orange);
  background: var(--c-orange);
  color: #fff;
  box-shadow: inset 0 0 0 1px var(--c-orange);
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 1px solid var(--rule-light);
  background: rgba(245, 242, 234, .04);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

.page-faq .faq-hero__cap {
  display: block;
  padding: 10px 12px;
  border-top: 1px solid var(--rule-light);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--c-stone);
}

/* ---------- 主体分栏 ---------- */

.page-faq .faq-body {
  display: grid;
  gap: 36px;
  padding-block: 40px 76px;
}

.page-faq .faq-index {
  align-self: start;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--c-ink);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-gray);
}

.page-faq .faq-index__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  position: relative;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 3px 8px;
  padding: 13px 10px 13px 12px;
  border-bottom: 1px solid var(--rule-dark);
  color: var(--c-ink);
  text-decoration: none;
  transition: background-color 120ms linear;
}

.page-faq .faq-index__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 2px;
  height: 0;
  transform: translateY(-50%);
  background: var(--c-orange);
  transition: height 160ms linear;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--tint-orange);
}

.page-faq .faq-index__link:hover::before,
.page-faq .faq-index__link:focus-visible::before {
  height: 100%;
}

.page-faq .faq-index__num {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-orange);
}

.page-faq .faq-index__label {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .faq-index__peek {
  grid-column: 2;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--c-stone);
}

.page-faq .faq-index__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-gray);
}

.page-faq .faq-index__cta {
  color: var(--c-wine);
  text-decoration: none;
  border-bottom: 1px solid var(--c-wine);
  transition: color 120ms linear, border-color 120ms linear;
}

.page-faq .faq-index__cta:hover,
.page-faq .faq-index__cta:focus-visible {
  color: var(--c-orange);
  border-bottom-color: var(--c-orange);
}

/* ---------- 分组与手风琴 ---------- */

.page-faq .faq-groups {
  display: grid;
  gap: 40px;
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 104px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 12px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--c-ink);
}

.page-faq .faq-group__num {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--c-orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--c-ink);
}

.page-faq .faq-group__hint {
  grid-column: 2;
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-stone);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--rule-dark);
  background: transparent;
  transition: background-color 120ms linear, box-shadow 120ms linear;
}

.page-faq .faq-item:hover {
  background: rgba(255, 255, 255, .72);
}

.page-faq .faq-item[open] {
  background: rgba(255, 255, 255, .88);
  box-shadow: inset 2px 0 0 var(--c-orange);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px 15px 14px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--c-ink);
}

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

.page-faq .faq-q__num {
  flex: none;
  margin-top: 3px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-orange);
}

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

.page-faq .faq-q::after {
  content: "+";
  flex: none;
  margin-left: auto;
  padding-left: 10px;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.2;
  color: var(--c-orange);
}

.page-faq .faq-item[open] .faq-q::after {
  content: "–";
}

.page-faq .faq-a {
  padding: 0 16px 20px 14px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-gray);
  animation: faq-reveal 160ms linear;
}

.page-faq .faq-a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-inline {
  color: var(--c-wine);
  text-decoration: none;
  border-bottom: 1px solid var(--c-wine);
  transition: color 120ms linear, border-color 120ms linear;
}

.page-faq .faq-inline:hover,
.page-faq .faq-inline:focus-visible {
  color: var(--c-orange);
  border-bottom-color: var(--c-orange);
}

.page-faq .faq-steps {
  counter-reset: faqstep;
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-steps li {
  position: relative;
  counter-increment: faqstep;
  padding-left: 36px;
  line-height: 1.7;
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-orange);
}

.page-faq .faq-fig {
  display: grid;
  gap: 14px;
  margin: 18px 0 0;
}

.page-faq .faq-fig img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--rule-dark);
  object-fit: cover;
}

.page-faq .faq-fig__cap {
  padding-left: 12px;
  border-left: 2px solid var(--c-orange);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-stone);
}

@keyframes faq-reveal {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ---------- 断点 ---------- */

@media (min-width: 700px) {
  .page-faq .faq-fig {
    grid-template-columns: 186px minmax(0, 1fr);
    align-items: start;
    gap: 18px;
  }

  .page-faq .faq-fig img {
    aspect-ratio: 9 / 11;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: 46px;
    padding-block: 52px 64px;
  }

  .page-faq .faq-body {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 52px;
    padding-block: 56px 96px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--sticky-top);
  }

  .page-faq .faq-groups {
    gap: 52px;
  }

  .page-faq .faq-group__title {
    font-size: 23px;
  }

  .page-faq .faq-q {
    font-size: 16px;
    padding: 17px 18px 17px 16px;
  }

  .page-faq .faq-a {
    padding: 0 18px 22px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-a {
    animation: none;
  }

  .page-faq .faq-index__link::before,
  .page-faq .faq-index__link,
  .page-faq .faq-item,
  .page-faq .faq-jump__link {
    transition: none;
  }
}