.page-faq {
  --faq-rule: 1px solid var(--line-ink);
  --faq-rule-strong: 1px solid var(--line-ink-strong);
  background: var(--fog);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--navy-900);
  color: var(--fog);
  padding: clamp(20px, 4vw, 32px) 0 clamp(36px, 6vw, 72px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-light) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-light) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: .55;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .breadcrumbs__link {
  color: rgba(244, 247, 250, .68);
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumbs__link:hover,
.page-faq .faq-hero .breadcrumbs__link:focus-visible {
  color: var(--gold-300);
}

.page-faq .faq-hero .breadcrumbs__current {
  color: var(--gold-300);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
  margin-top: clamp(16px, 3vw, 28px);
}

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

.page-faq .faq-hero .eyebrow {
  color: var(--gold-300);
  margin: 0 0 12px;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-size: clamp(30px, 7vw, 56px);
  line-height: 1.08;
  letter-spacing: -.02em;
  font-weight: 900;
  color: var(--fog);
}

.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  max-width: 46ch;
  color: var(--cool);
  font-size: clamp(15px, 2.4vw, 17px);
  line-height: 1.75;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 22px;
}

.page-faq .faq-hero__batch {
  color: var(--gold-300);
  font-size: .9rem;
  letter-spacing: .04em;
}

.page-faq .faq-hero .btn-row {
  margin-top: 24px;
}

.page-faq .faq-hero__figure {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line-light);
  background: var(--navy-700);
}

.page-faq .faq-hero__caption {
  margin-top: 10px;
  font-size: 11px;
  letter-spacing: .08em;
  color: rgba(244, 247, 250, .55);
}

/* ---------- 三步 ---------- */
.page-faq .faq-steps {
  background: #ffffff;
  border-bottom: var(--faq-rule);
}

.page-faq .faq-steps__head {
  max-width: 58ch;
}

.page-faq .faq-steps__head h2 {
  margin: 0;
  font-size: clamp(22px, 4vw, 34px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--navy-700);
  font-weight: 900;
}

.page-faq .faq-steps__head p {
  margin: 12px 0 0;
  color: var(--mid);
  font-size: .95rem;
  line-height: 1.75;
}

.page-faq .faq-steps__list {
  display: grid;
  gap: 14px;
  margin: clamp(22px, 4vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  padding: 20px 20px 24px;
  background: var(--fog);
  border: var(--faq-rule);
  border-top: 3px solid var(--gold-500);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-step:hover,
.page-faq .faq-step:focus-within {
  background: #ffffff;
  border-color: var(--line-ink-strong);
  border-top-color: var(--gold-500);
}

.page-faq .faq-step__num {
  display: block;
  font-size: 24px;
  line-height: 1;
  color: var(--gold-500);
  letter-spacing: .04em;
  margin-bottom: 12px;
}

.page-faq .faq-step__title {
  margin: 0 0 10px;
  font-size: 1.12rem;
  font-weight: 900;
  letter-spacing: .01em;
  color: var(--navy-700);
}

.page-faq .faq-step__text {
  margin: 0;
  color: var(--mid);
  font-size: .94rem;
  line-height: 1.75;
}

.page-faq .faq-steps__figure {
  margin: clamp(24px, 4vw, 38px) 0 0;
}

.page-faq .faq-steps__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: var(--faq-rule);
  background: var(--cool);
}

/* ---------- 问答 ---------- */
.page-faq .faq-answers {
  background: var(--fog);
}

.page-faq .faq-answers__layout {
  display: grid;
  gap: 24px;
}

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

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mid);
  text-transform: uppercase;
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__link {
  display: block;
  white-space: nowrap;
  padding: 9px 14px;
  border: var(--faq-rule);
  background: #ffffff;
  color: var(--navy-700);
  font-size: .9rem;
  font-weight: 500;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--gold-500);
  color: var(--navy-900);
  background: #ffffff;
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 2px;
}

.page-faq .faq-index__note {
  display: none;
  margin: 14px 0 0;
  font-size: .8rem;
  line-height: 1.7;
  color: var(--mid);
}

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

.page-faq .faq-group {
  margin-bottom: clamp(24px, 4vw, 38px);
  scroll-margin-top: 24px;
}

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

.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 6px;
  padding-bottom: 10px;
  border-bottom: var(--faq-rule-strong);
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: .06em;
  color: var(--navy-700);
}

.page-faq .faq-group__title::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--gold-500);
  flex: none;
}

.page-faq .faq-item {
  border-bottom: var(--faq-rule);
}

.page-faq .faq-item__q {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 15px 0;
  margin: 0;
  cursor: pointer;
  list-style: none;
  font-size: .98rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--gold-500);
}

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

.page-faq .faq-item__q:hover {
  color: var(--navy-500);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 2px;
}

.page-faq .faq-item__a {
  padding: 0 0 18px;
  max-width: 64ch;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.8;
  color: var(--mid);
}

/* ---------- 排查 ---------- */
.page-faq .faq-trouble {
  background: var(--navy-900);
  color: var(--fog);
}

.page-faq .faq-trouble__head {
  max-width: 58ch;
}

.page-faq .faq-trouble__head h2 {
  margin: 0;
  font-size: clamp(22px, 4vw, 34px);
  line-height: 1.2;
  letter-spacing: -.01em;
  font-weight: 900;
  color: var(--fog);
}

.page-faq .faq-trouble__head p {
  margin: 12px 0 0;
  color: var(--cool);
  font-size: .95rem;
  line-height: 1.75;
}

.page-faq .faq-trouble__grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(22px, 4vw, 34px);
}

.page-faq .faq-trouble__item {
  padding: 22px 20px 24px;
  border: 1px solid var(--line-light);
  border-left: 2px solid var(--mint);
  background: var(--navy-700);
}

.page-faq .faq-trouble__num {
  display: block;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mint);
  margin-bottom: 10px;
}

.page-faq .faq-trouble__item h3 {
  margin: 0 0 14px;
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--fog);
}

.page-faq .faq-trouble__list {
  margin: 0;
  padding-left: 18px;
  color: var(--cool);
  font-size: .91rem;
  line-height: 1.8;
}

.page-faq .faq-trouble__list li {
  margin-bottom: 8px;
}

.page-faq .faq-trouble__list li:last-child {
  margin-bottom: 0;
}

.page-faq .faq-trouble__list li::marker {
  color: var(--gold-500);
  font-family: var(--font-mono);
}

/* ---------- 联系兜底 ---------- */
.page-faq .faq-help {
  background: #ffffff;
}

.page-faq .faq-help__panel {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  padding: clamp(20px, 4vw, 40px);
  border: var(--faq-rule);
  border-top: 3px solid var(--gold-500);
  background: var(--fog);
}

.page-faq .faq-help__intro h2 {
  margin: 10px 0 0;
  font-size: clamp(22px, 4vw, 32px);
  line-height: 1.22;
  letter-spacing: -.01em;
  font-weight: 900;
  color: var(--navy-700);
}

.page-faq .faq-help__intro p {
  margin: 12px 0 0;
  max-width: 48ch;
  color: var(--mid);
  font-size: .94rem;
  line-height: 1.75;
}

.page-faq .faq-help__intro .btn-row {
  margin-top: 20px;
}

.page-faq .faq-help__list {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-help__row {
  display: grid;
  gap: 6px;
  padding: 14px 0;
  border-top: var(--faq-rule);
}

.page-faq .faq-help__row:first-child {
  border-top: none;
  padding-top: 0;
}

.page-faq .faq-help__row dt {
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mid);
}

.page-faq .faq-help__row dd {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: .95rem;
  color: var(--navy-700);
  word-break: break-word;
}

.page-faq .faq-help__row dd .mono {
  font-family: var(--font-mono);
  font-size: .9rem;
  letter-spacing: .01em;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .faq-trouble__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .faq-help__panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .85fr);
  }

  .page-faq .faq-answers__layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 24px;
    padding-right: 20px;
    border-right: var(--faq-rule);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__link {
    border: none;
    border-left: 2px solid var(--line-ink);
    background: transparent;
    padding: 9px 0 9px 14px;
    white-space: normal;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: var(--gold-500);
    background: transparent;
  }

  .page-faq .faq-index__note {
    display: block;
  }

  .page-faq .faq-item__q {
    font-size: 1.02rem;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-hero {
    padding-bottom: 84px;
  }

  .page-faq .faq-step {
    padding: 24px 24px 28px;
  }
}

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