.page-faq {
  --faq-hover: #E9F1F4;
  --faq-hair: 2px solid var(--mist-200);
  --faq-paper: #FFFFFF;
  background: var(--white-050);
  color: var(--stone-600);
  padding-bottom: 0;
}

.page-faq .breadcrumb {
  font-size: var(--fs-14);
  color: var(--stone-600);
  margin-bottom: 20px;
}

.page-faq .breadcrumb a {
  color: var(--ink-700);
  text-decoration: none;
  border-bottom: 2px solid var(--cyan-600);
}

.page-faq .breadcrumb a:hover {
  color: var(--orange-700);
  border-bottom-color: var(--orange-700);
}

/* ---------- hero ---------- */
.faq-hero {
  background:
    radial-gradient(120% 90% at 82% -10%, rgba(61, 242, 210, 0.16), transparent 62%),
    var(--white-050);
  border-bottom: 2px solid var(--ink-900);
}

.faq-hero__inner {
  display: grid;
  gap: 32px;
  padding-top: 28px;
  padding-bottom: 44px;
}

.faq-hero__copy .eyebrow {
  color: var(--orange-700);
  margin-bottom: 14px;
}

.faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-64);
  letter-spacing: -0.02em;
  line-height: 1.02;
  color: var(--ink-900);
  margin: 0 0 18px;
  max-width: 12ch;
}

.faq-lede {
  font-family: var(--font-body);
  font-size: var(--fs-17);
  line-height: 1.8;
  color: var(--stone-600);
  margin: 0 0 26px;
  max-width: 42ch;
}

.faq-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
}

.faq-facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding-left: 12px;
  border-left: 3px solid var(--cyan-600);
}

.faq-facts__v {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--fs-20);
  color: var(--ink-900);
}

.faq-facts__k {
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--stone-600);
}

.faq-hero__media {
  margin: 0;
  position: relative;
}

.faq-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 10 / 13;
  max-height: 360px;
  object-fit: cover;
  border: 2px solid var(--ink-900);
  box-shadow: var(--shadow-hard-light);
  background: var(--ink-800);
}

/* ---------- 问答区 ---------- */
.faq-asks {
  padding: 56px 0 64px;
}

.faq-asks .section-head {
  margin-bottom: 28px;
}

.faq-asks .section-title {
  color: var(--ink-900);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-40);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}

.faq-asks__intro {
  font-size: var(--fs-17);
  line-height: 1.75;
  max-width: 46ch;
  margin: 0;
  color: var(--stone-600);
}

.faq-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.faq-tabs {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  border-bottom: 2px solid var(--ink-900);
  margin-bottom: 0;
}

.faq-tab {
  flex: 0 0 auto;
  scroll-snap-align: start;
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 13px 16px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: var(--fs-14);
  color: var(--ink-700);
  border-bottom: 4px solid transparent;
  margin-bottom: -2px;
  background: var(--white-050);
  transition: background var(--ease), color var(--ease), border-color var(--ease);
}

.faq-tab:hover {
  background: var(--faq-hover);
}

.faq-tab__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--fs-12);
  color: var(--orange-700);
}

.faq-tab__name {
  font-weight: 700;
  white-space: nowrap;
}

.faq-tab__count {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--stone-600);
}

#faq-cat-data:checked ~ .faq-tabs label[for="faq-cat-data"],
#faq-cat-match:checked ~ .faq-tabs label[for="faq-cat-match"],
#faq-cat-nav:checked ~ .faq-tabs label[for="faq-cat-nav"],
#faq-cat-coop:checked ~ .faq-tabs label[for="faq-cat-coop"] {
  background: var(--ink-900);
  color: var(--white-050);
  border-bottom-color: var(--orange-500);
}

#faq-cat-data:checked ~ .faq-tabs label[for="faq-cat-data"] .faq-tab__num,
#faq-cat-match:checked ~ .faq-tabs label[for="faq-cat-match"] .faq-tab__num,
#faq-cat-nav:checked ~ .faq-tabs label[for="faq-cat-nav"] .faq-tab__num,
#faq-cat-coop:checked ~ .faq-tabs label[for="faq-cat-coop"] .faq-tab__num {
  color: var(--yellow-400);
}

#faq-cat-data:checked ~ .faq-tabs label[for="faq-cat-data"] .faq-tab__count,
#faq-cat-match:checked ~ .faq-tabs label[for="faq-cat-match"] .faq-tab__count,
#faq-cat-nav:checked ~ .faq-tabs label[for="faq-cat-nav"] .faq-tab__count,
#faq-cat-coop:checked ~ .faq-tabs label[for="faq-cat-coop"] .faq-tab__count {
  color: var(--cool-400);
}

#faq-cat-data:focus-visible ~ .faq-tabs label[for="faq-cat-data"],
#faq-cat-match:focus-visible ~ .faq-tabs label[for="faq-cat-match"],
#faq-cat-nav:focus-visible ~ .faq-tabs label[for="faq-cat-nav"],
#faq-cat-coop:focus-visible ~ .faq-tabs label[for="faq-cat-coop"] {
  outline: 3px solid var(--orange-500);
  outline-offset: -3px;
}

.faq-panel {
  display: none;
}

#faq-cat-data:checked ~ .faq-panels .faq-panel--data,
#faq-cat-match:checked ~ .faq-panels .faq-panel--match,
#faq-cat-nav:checked ~ .faq-panels .faq-panel--nav,
#faq-cat-coop:checked ~ .faq-panels .faq-panel--coop {
  display: block;
}

.qa {
  border-bottom: var(--faq-hair);
}

.qa__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 18px 4px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-17);
  line-height: 1.5;
  color: var(--ink-900);
  transition: background var(--ease), color var(--ease);
}

.qa__q::-webkit-details-marker {
  display: none;
}

.qa__q::marker {
  content: "";
}

.qa__q:hover {
  background: var(--faq-hover);
}

.qa__q:focus-visible {
  outline: 3px solid var(--orange-500);
  outline-offset: -3px;
}

.qa__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--fs-12);
  color: var(--orange-700);
  letter-spacing: 0.04em;
}

.qa__text {
  flex: 1 1 auto;
  min-width: 0;
}

.qa__tri {
  flex: 0 0 auto;
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 8px solid var(--cyan-600);
  transform: translateY(-2px);
  transition: transform var(--ease);
}

.qa[open] .qa__tri {
  transform: rotate(180deg) translateY(2px);
}

.qa[open] .qa__q {
  border-bottom: 2px dashed var(--mist-200);
}

.qa__a {
  padding: 16px 4px 20px;
}

.qa__a p {
  margin: 0;
  font-size: var(--fs-17);
  line-height: 1.8;
  color: var(--stone-600);
}

.qa__a a {
  color: var(--ink-700);
  border-bottom: 2px solid var(--cyan-600);
  text-decoration: none;
}

.qa__a a:hover {
  color: var(--orange-700);
  border-bottom-color: var(--orange-700);
}

/* ---------- 术语表 ---------- */
.faq-terms {
  margin-top: 56px;
}

.faq-terms .section-head {
  margin-bottom: 22px;
}

.faq-terms .section-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-28);
  line-height: 1.2;
  color: var(--ink-900);
  letter-spacing: -0.01em;
  margin: 0 0 10px;
}

.term-wrap {
  overflow-x: auto;
  border: 2px solid var(--ink-900);
  box-shadow: var(--shadow-hard-light);
  background: var(--faq-paper);
  -webkit-overflow-scrolling: touch;
}

.term-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: var(--fs-14);
  line-height: 1.7;
}

.term-table thead th {
  background: var(--ink-900);
  color: var(--white-050);
  font-family: var(--font-body);
  font-weight: 700;
  text-align: left;
  padding: 13px 16px;
  letter-spacing: 0.06em;
  font-size: var(--fs-12);
  white-space: nowrap;
}

.term-table tbody th {
  position: sticky;
  left: 0;
  z-index: 1;
  background: var(--white-050);
  color: var(--ink-900);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-14);
  text-align: left;
  padding: 14px 16px;
  white-space: nowrap;
  border-bottom: var(--faq-hair);
  border-right: 2px solid var(--mist-200);
}

.term-table tbody td {
  padding: 14px 16px;
  color: var(--stone-600);
  border-bottom: var(--faq-hair);
  vertical-align: top;
}

.term-table tbody tr:last-child th,
.term-table tbody tr:last-child td {
  border-bottom: 0;
}

.term-table tbody tr:hover td {
  background: var(--faq-hover);
}

.term-table tbody tr:hover th {
  background: var(--faq-hover);
  color: var(--orange-700);
}

/* ---------- 导航领取 ---------- */
.faq-guide {
  background:
    radial-gradient(90% 80% at 12% 0%, rgba(61, 242, 210, 0.14), transparent 60%),
    var(--ink-900);
  color: var(--mist-200);
  padding: 56px 0 60px;
  border-top: 2px solid var(--ink-900);
  border-bottom: 2px solid var(--ink-900);
}

.faq-guide__inner {
  display: grid;
  gap: 32px;
}

.eyebrow--onDark {
  color: var(--cyan-400);
  margin-bottom: 14px;
}

.faq-guide__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-40);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--white-050);
  margin: 0 0 14px;
  max-width: 14ch;
}

.faq-guide__lede {
  font-size: var(--fs-17);
  line-height: 1.8;
  color: var(--cool-400);
  margin: 0 0 26px;
  max-width: 44ch;
}

.guide-steps {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  gap: 0;
}

.guide-step {
  position: relative;
  display: flex;
  gap: 14px;
  padding-bottom: 22px;
}

.guide-step:last-child {
  padding-bottom: 0;
}

.guide-step::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 34px;
  bottom: 0;
  border-left: 2px dashed var(--ink-700);
}

.guide-step:last-child::before {
  display: none;
}

.guide-step__num {
  flex: 0 0 auto;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--fs-12);
  color: var(--ink-900);
  background: var(--cyan-400);
  border: 2px solid var(--ink-900);
  box-shadow: 3px 3px 0 rgba(5, 20, 31, 0.8);
}

.guide-step:last-child .guide-step__num {
  background: var(--orange-500);
  color: var(--white-050);
}

.guide-step__body h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-20);
  color: var(--white-050);
  margin: 2px 0 6px;
}

.guide-step__body p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--cool-400);
  max-width: 40ch;
}

.faq-guide__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.faq-guide__media {
  margin: 0;
}

.faq-guide__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 8;
  object-fit: cover;
  border: 2px solid var(--ink-700);
  box-shadow: 6px 6px 0 rgba(61, 242, 210, 0.22);
  background: var(--ink-800);
}

/* ---------- 兜底 ---------- */
.faq-fallback {
  padding: 56px 0 72px;
  background: var(--white-050);
}

.fallback-card {
  display: grid;
  gap: 26px;
  border: 2px solid var(--ink-900);
  box-shadow: var(--shadow-hard-light);
  background: var(--faq-paper);
  padding: 26px 20px;
}

.fallback-card__body .eyebrow {
  color: var(--orange-700);
  margin-bottom: 12px;
}

.fallback-card__body h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-28);
  line-height: 1.2;
  color: var(--ink-900);
  margin: 0 0 12px;
}

.fallback-card__body p {
  font-size: var(--fs-17);
  line-height: 1.8;
  color: var(--stone-600);
  margin: 0 0 14px;
  max-width: 48ch;
}

.fallback-card__mail {
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  color: var(--ink-900);
  text-decoration: none;
  border-bottom: 2px solid var(--orange-500);
  word-break: break-all;
}

.fallback-card__mail:hover {
  color: var(--orange-700);
}

.fallback-card__tip {
  font-family: var(--font-body);
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--ink-900);
}

.fallback-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.fallback-list li {
  position: relative;
  padding-left: 18px;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--stone-600);
}

.fallback-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  background: var(--cyan-600);
}

.fallback-card__aside {
  border-top: 2px dashed var(--mist-200);
  padding-top: 20px;
}

.fallback-card__label {
  font-family: var(--font-body);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--orange-700);
  margin: 0 0 8px;
}

.fallback-card__aside p {
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--stone-600);
  margin: 0 0 16px;
}

.fallback-card__aside a:not(.btn) {
  color: var(--ink-700);
  border-bottom: 2px solid var(--cyan-600);
  text-decoration: none;
}

.fallback-card__aside a:not(.btn):hover {
  color: var(--orange-700);
  border-bottom-color: var(--orange-700);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 860px) {
  .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: 48px;
    padding-top: 40px;
    padding-bottom: 64px;
  }

  .faq-hero h1 {
    font-size: var(--fs-96);
  }

  .faq-hero__media img {
    max-height: none;
    aspect-ratio: 10 / 13;
  }

  .faq-asks {
    padding: 88px 0 96px;
  }

  .faq-asks .section-title {
    font-size: var(--fs-64);
    max-width: 18ch;
  }

  .qa__q {
    font-size: var(--fs-20);
    padding: 20px 8px;
  }

  .qa__a {
    padding: 18px 8px 24px 52px;
  }

  .qa__a p {
    max-width: 62ch;
  }

  .faq-terms {
    margin-top: 88px;
  }

  .faq-guide {
    padding: 88px 0 96px;
  }

  .faq-guide__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: center;
    gap: 56px;
  }

  .faq-guide__title {
    font-size: var(--fs-64);
  }

  .faq-fallback {
    padding: 88px 0 104px;
  }

  .fallback-card {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: 40px;
    padding: 40px 36px;
  }

  .fallback-card__aside {
    border-top: 0;
    border-left: 2px dashed var(--mist-200);
    padding-top: 0;
    padding-left: 28px;
  }
}

@media (min-width: 1180px) {
  .faq-hero__inner {
    gap: 72px;
  }

  .faq-hero__copy {
    padding-bottom: 8px;
  }

  .faq-facts {
    gap: 12px 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__tri,
  .page-faq .faq-tab {
    transition: none;
  }
}