.page-faq {
  --faq-panel: var(--ink-850);
  --faq-grid-line: rgba(63, 240, 200, .05);
  --faq-top: 92px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 30px 0 22px;
  background:
    linear-gradient(180deg, rgba(11, 42, 32, .9), rgba(6, 26, 20, 0) 78%),
    repeating-linear-gradient(90deg, var(--faq-grid-line) 0 1px, transparent 1px 78px);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-faq .breadcrumbs {
  margin: 0 0 22px;
}

.page-faq .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--paper-45);
}

.page-faq .breadcrumbs a {
  color: var(--paper-70);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .breadcrumbs a:hover {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

.page-faq .breadcrumbs li + li::before {
  content: "/";
  margin: 0 8px;
  color: var(--line);
}

.page-faq .faq-hero__copy .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  max-width: 17ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 9vw, 68px);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 40ch;
  font-size: 14px;
  line-height: 1.9;
  color: var(--paper-70);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump a {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--line);
  color: var(--paper-70);
  font-size: 12px;
  letter-spacing: .04em;
  text-decoration: none;
  transition: color .2s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-jump a:hover {
  color: var(--ink-900);
  background: var(--neon);
  border-color: var(--neon);
}

.page-faq .faq-hero__media {
  margin: 0;
  position: relative;
  border: 1px solid var(--line);
  background: var(--ink-800);
  box-shadow: -8px 8px 0 rgba(11, 42, 32, .85);
}

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

/* ---------- 主体网格 ---------- */
.page-faq .faq-body {
  padding: 10px 0 46px;
}

.page-faq .faq-grid {
  display: grid;
  gap: 30px;
}

/* ---------- 主题索引 ---------- */
.page-faq .faq-index {
  border: 1px solid var(--line);
  background: var(--faq-panel);
  padding: 18px 16px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--paper-45);
}

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

.page-faq .faq-index__item + .faq-index__item {
  border-top: 1px solid var(--line);
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 10px;
  padding: 10px 2px 10px 10px;
  border-left: 2px solid transparent;
  color: var(--paper-70);
  font-size: 13px;
  line-height: 1.5;
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--paper);
  border-left-color: var(--neon);
  background: rgba(63, 240, 200, .05);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--neon);
}

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--paper-45);
}

.page-faq .faq-index__foot {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.8;
  color: var(--paper-45);
}

.page-faq .faq-index__foot a {
  color: var(--pulse);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 61, .45);
}

.page-faq .faq-index__foot a:hover {
  border-bottom-color: var(--pulse);
}

/* ---------- 分组 ---------- */
.page-faq .faq-column {
  min-width: 0;
}

.page-faq .faq-group {
  padding-bottom: 30px;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: var(--faq-top);
}

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

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  align-items: baseline;
  margin-bottom: 16px;
}

.page-faq .faq-group__num {
  grid-row: 1 / span 2;
  align-self: start;
  padding: 3px 6px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--neon);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 4.6vw, 30px);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-group__sub {
  grid-column: 2;
  margin: 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--paper-45);
}

/* ---------- 信息图与步骤 ---------- */
.page-faq .faq-figure {
  margin: 0 0 20px;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.7;
  color: var(--paper-45);
}

.page-faq .faq-steps {
  counter-reset: faqstep;
  display: grid;
  gap: 10px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  background: var(--faq-panel);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--paper-70);
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: "0" counter(faqstep);
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--neon);
}

.page-faq .faq-steps strong {
  display: block;
  margin-bottom: 4px;
  color: var(--paper);
  font-size: 13.5px;
}

.page-faq .faq-note {
  margin: 0 0 18px;
  padding: 12px 14px;
  border-left: 2px solid var(--pulse);
  background: rgba(255, 138, 61, .09);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--paper);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--line);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 4px;
  cursor: pointer;
  list-style: none;
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.7;
  color: var(--paper);
  transition: color .2s var(--ease);
}

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

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item > summary:hover {
  color: var(--neon);
}

.page-faq .faq-item > summary::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border-right: 1.5px solid var(--neon);
  border-bottom: 1.5px solid var(--neon);
  transform: rotate(45deg);
  transition: transform .25s var(--ease);
}

.page-faq .faq-item[open] > summary::before {
  transform: rotate(-135deg);
}

.page-faq .faq-item__body {
  padding: 0 4px 20px 20px;
}

.page-faq .faq-item__body p {
  margin: 0 0 10px;
  max-width: 44em;
  font-size: 14px;
  line-height: 1.9;
  color: var(--paper-70);
}

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

.page-faq .faq-inline-link {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid var(--neon-dim, rgba(63, 240, 200, .45));
}

.page-faq .faq-inline-link:hover {
  border-bottom-color: var(--neon);
}

/* ---------- 联系客服 ---------- */
.page-faq .faq-group--support {
  border-bottom: 0;
}

.page-faq .faq-support {
  position: relative;
  padding: 24px 18px 22px;
  border: 1px solid var(--line);
  background: var(--faq-panel);
}

.page-faq .faq-support::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--neon), var(--pulse));
}

.page-faq .faq-support .faq-group__num {
  border-color: rgba(255, 138, 61, .55);
  color: var(--pulse);
}

.page-faq .faq-support__grid {
  display: grid;
  gap: 14px;
  margin-top: 6px;
}

.page-faq .faq-support__item {
  padding: 16px;
  border: 1px solid var(--line);
  background: var(--ink-900);
}

.page-faq .faq-support__key {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--paper-45);
}

.page-faq .faq-support__value {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--neon);
  word-break: break-all;
}

.page-faq .faq-support__desc {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--paper-70);
}

.page-faq .faq-support__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 42px 0 30px;
  }

  .page-faq .faq-hero .lede {
    font-size: 15px;
  }

  .page-faq .faq-index {
    padding: 20px 18px;
  }

  .page-faq .faq-support {
    padding: 28px 26px 24px;
  }

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

  .page-faq .faq-support__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 54px 0 38px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 46px;
  }
}

@media (min-width: 1060px) {
  .page-faq .faq-body {
    padding: 18px 0 70px;
  }

  .page-faq .faq-grid {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 54px;
    align-items: start;
  }

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

  .page-faq .faq-group {
    padding-bottom: 38px;
    margin-bottom: 38px;
  }

  .page-faq .faq-item > summary {
    padding: 17px 4px;
    font-size: 15px;
  }

  .page-faq .faq-item__body {
    padding: 0 4px 24px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item > summary::before,
  .page-faq .faq-item > summary,
  .page-faq .faq-jump a,
  .page-faq .faq-index__link {
    transition: none;
  }
}