.page-faq {
  --faq-rail-w: 246px;
  --faq-gap: clamp(24px, 3.4vw, 54px);
  --faq-orange-soft: rgba(255, 122, 26, 0.5);
  --faq-green-soft: rgba(57, 255, 156, 0.12);
  background: var(--bg);
  color: var(--c-grey);
  font-family: var(--font-sans);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(28px, 4vw, 52px)) var(--gutter) clamp(34px, 5vw, 66px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(720px 400px at 84% 4%, rgba(57, 255, 156, 0.13), transparent 70%),
    radial-gradient(520px 340px at 4% 100%, rgba(255, 122, 26, 0.1), transparent 72%);
}

.page-faq .faq-hero > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(24px, 3.6vw, 46px);
}

.page-faq .faq-hero__note {
  position: absolute;
  right: calc(var(--gutter) * 0.3);
  top: 52%;
  margin: 0;
  transform: translateY(-50%) rotate(90deg);
  transform-origin: center;
  font-family: var(--font-num);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.34em;
  color: var(--c-steel);
  white-space: nowrap;
  pointer-events: none;
  display: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  grid-template-columns: 1fr;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(30px, 6.4vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--c-white);
  max-width: 15ch;
}

.page-faq .faq-hero__aside .lead {
  margin: 0;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.8;
  color: var(--c-grey);
}

.page-faq .faq-hero__meta {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-hero__meta li {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 14px;
  line-height: 1.6;
}

.page-faq .faq-key {
  font-family: var(--font-num);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-green);
  min-width: 78px;
  flex: 0 0 auto;
}

/* ---------- 三步速查 ---------- */
.page-faq .faq-quick {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-steps {
  list-style: none;
  margin: clamp(26px, 3.4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-faq .faq-step {
  position: relative;
  padding: 24px 22px 26px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--c-orange);
  box-shadow: 0 20px 42px -32px rgba(0, 0, 0, 0.95);
}

.page-faq .faq-step__num {
  display: block;
  font-family: var(--font-num);
  font-size: 36px;
  font-weight: 800;
  line-height: 1;
  color: var(--c-orange);
}

.page-faq .faq-step h3 {
  margin: 12px 0 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--c-white);
  letter-spacing: 0.01em;
}

.page-faq .faq-step p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-grey);
}

/* ---------- 问答双栏 ---------- */
.page-faq .faq-body__grid {
  display: grid;
  gap: var(--faq-gap);
  grid-template-columns: 1fr;
}

.page-faq .faq-rail {
  padding: 16px;
  background: rgba(15, 26, 39, 0.78);
  border: 1px solid var(--line);
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-steel);
}

.page-faq .faq-rail .index-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border: 0;
  padding: 0;
}

.page-faq .faq-rail .index-link {
  display: block;
  padding: 8px 13px;
  font-size: 13.5px;
  color: var(--c-grey);
  text-decoration: none;
  background: rgba(29, 44, 61, 0.55);
  border: 1px solid var(--line);
  border-left: 2px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .faq-rail .index-link:hover {
  color: var(--c-white);
  border-color: var(--c-steel-blue);
}

.page-faq .faq-rail .index-link.is-active {
  color: var(--c-green);
  background: var(--faq-green-soft);
  border-left-color: var(--c-green);
}

/* ---------- 搜索与筛选 ---------- */
.page-faq .faq-tools {
  margin-bottom: 14px;
}

.page-faq .faq-tools .search-shell {
  width: 100%;
}

.page-faq .faq-tools .search-hint {
  display: block;
  margin: 8px 0 0;
  min-height: 1em;
  font-size: 12.5px;
  color: var(--c-steel);
}

.page-faq .faq-answers .filter-bar {
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.page-faq .faq-answers .filter-chip[aria-pressed="true"] {
  color: var(--c-night);
  background: var(--c-green);
  border-color: var(--c-green);
}

/* ---------- 折叠问题条目 ---------- */
.page-faq .faq-item {
  margin: 0 0 14px;
  scroll-margin-top: calc(var(--header-h) + 24px);
  transition: border-color 0.2s var(--ease);
}

.page-faq .faq-item[hidden] {
  display: none;
}

.page-faq .faq-item[open] {
  border-color: rgba(57, 255, 156, 0.42);
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 20px 22px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__no {
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--c-green);
}

.page-faq .faq-item__title {
  flex: 1 1 auto;
  font-size: clamp(16px, 1.4vw, 19px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-white);
}

.page-faq .faq-item__toggle {
  position: relative;
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  align-self: center;
}

.page-faq .faq-item__toggle::before,
.page-faq .faq-item__toggle::after {
  content: "";
  position: absolute;
  background: var(--c-green);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.page-faq .faq-item__toggle::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .faq-item__toggle::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.page-faq .faq-item[open] .faq-item__toggle::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__body {
  padding: 20px 22px 26px;
  border-top: 1px dashed var(--line);
}

.page-faq .faq-item__body p {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--c-grey);
  max-width: 46ch;
}

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

.page-faq .faq-item__body--split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: start;
}

/* ---------- 编号步骤 ---------- */
.page-faq .faq-actions {
  list-style: none;
  counter-reset: faqstep;
  margin: 16px 0 18px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-actions li {
  position: relative;
  counter-increment: faqstep;
  padding: 12px 16px 12px 54px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-white);
  background: rgba(29, 44, 61, 0.55);
  border-left: 2px solid var(--faq-orange-soft);
}

.page-faq .faq-actions li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 17px;
  top: 12px;
  font-family: var(--font-num);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--c-orange);
}

.page-faq .faq-note {
  margin: 14px 0 0;
  padding: 12px 16px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--c-grey);
  background: linear-gradient(90deg, var(--faq-green-soft), transparent 72%);
  border: 1px dashed var(--line);
  max-width: none;
}

/* ---------- 数据表 ---------- */
.page-faq .faq-table-wrap {
  margin: 6px 0 18px;
  overflow-x: auto;
  border: 1px solid var(--line);
  background: rgba(15, 26, 39, 0.6);
}

.page-faq .faq-table-caption {
  padding: 12px 16px 0;
  text-align: left;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--c-steel);
}

.page-faq .data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .data-table th,
.page-faq .data-table td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
  line-height: 1.65;
  border-bottom: 1px solid var(--line);
}

.page-faq .data-table th {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-steel);
  white-space: nowrap;
}

.page-faq .data-table td {
  color: var(--c-grey);
}

.page-faq .data-table td:first-child {
  color: var(--c-white);
  font-weight: 600;
  white-space: nowrap;
}

.page-faq .data-table tbody tr:last-child td {
  border-bottom: 0;
}

/* ---------- 空结果 ---------- */
.page-faq .faq-empty {
  margin: 0;
  padding: 18px 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-grey);
  border: 1px dashed var(--line);
  background: rgba(29, 44, 61, 0.4);
}

.page-faq .faq-empty[hidden] {
  display: none;
}

/* ---------- 底部求助 ---------- */
.page-faq .faq-help__inner {
  display: grid;
  gap: 26px;
  grid-template-columns: 1fr;
  padding: clamp(26px, 3.6vw, 44px);
  background:
    linear-gradient(120deg, rgba(57, 255, 156, 0.08), transparent 58%),
    var(--surface);
  border: 1px solid var(--line);
  border-top: 3px solid var(--c-green);
}

.page-faq .faq-help__text h2 {
  margin: 12px 0 0;
  font-size: clamp(22px, 2.6vw, 32px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--c-white);
}

.page-faq .faq-help__text p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-grey);
  max-width: 52ch;
}

.page-faq .faq-help__links {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-help__stamp {
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.page-faq .faq-help__stamp .stamp {
  border-color: var(--c-orange);
  color: var(--c-orange);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-faq .faq-item__body {
    padding-left: 74px;
    padding-right: 34px;
  }

  .page-faq .faq-item__summary {
    padding: 22px 26px;
  }

  .page-faq .faq-steps {
    grid-template-columns: 1.05fr 1fr 0.9fr;
    gap: 16px;
  }

  .page-faq .faq-step:nth-child(2) {
    margin-top: 26px;
  }

  .page-faq .faq-step:nth-child(3) {
    margin-top: 52px;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-item__body--split {
    grid-template-columns: minmax(0, 1fr) minmax(230px, 320px);
    gap: 28px;
    padding-right: 30px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero__note {
    display: block;
  }

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

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    padding: 18px 16px 20px;
  }

  .page-faq .faq-rail .index-list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-rail .index-link {
    background: transparent;
    border: 0;
    border-left: 2px solid transparent;
    margin-left: -1px;
    padding: 10px 14px;
  }

  .page-faq .faq-rail .index-link:hover {
    background: rgba(29, 44, 61, 0.6);
  }

  .page-faq .faq-rail .index-link.is-active {
    background: linear-gradient(90deg, var(--faq-green-soft), transparent 80%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition: none !important;
    animation: none !important;
  }
}