.page-faq {
  --faq-rule: var(--line-faint);
  --faq-gap: clamp(32px, 5vw, 64px);
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-faq .crumb-link {
  color: var(--seam);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-faq .crumb-link:hover,
.page-faq .crumb-link:focus-visible {
  color: var(--flare);
}

.page-faq .crumb-sep {
  color: var(--brick-mid);
  margin: 0 8px;
}

.page-faq .crumb-current {
  color: var(--white);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(26px, 5vw, 54px);
  padding-bottom: clamp(26px, 4vw, 44px);
}

.page-faq .faq-title {
  margin: 18px 0 0;
  max-width: 16ch;
  color: var(--white);
  line-height: 1.06;
  letter-spacing: -0.01em;
}

.page-faq .faq-lede {
  margin: 22px 0 0;
  max-width: 46ch;
  color: var(--text-soft);
  font-size: var(--fs-400);
  line-height: 1.75;
}

.page-faq .faq-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 44px;
  margin: 34px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--faq-rule);
  max-width: 660px;
}

.page-faq .faq-facts dt {
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  letter-spacing: 0.1em;
  color: var(--text-dim);
}

.page-faq .faq-facts dd {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-500);
  color: var(--white);
  letter-spacing: -0.01em;
}

.page-faq .faq-facts .num {
  color: var(--teal);
}

/* ---------- 顶部横幅 ---------- */
.page-faq .faq-banner {
  width: min(calc(100% - var(--gutter) * 2), calc(var(--shell-max) - var(--gutter) * 2));
  max-width: none;
  margin: 0 auto;
  border-left: 0;
  border-right: 0;
}

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

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding-top: clamp(40px, 6vw, 76px);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-faq .faq-side-sticky {
  display: block;
}

.page-faq .faq-side-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  letter-spacing: 0.16em;
  color: var(--text-dim);
}

/* ---------- 筛选条 ---------- */
.page-faq .faq-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.page-faq .faq-filters .faq-side-title {
  flex: 0 0 100%;
}

.page-faq .filter-btn {
  appearance: none;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: var(--capsule);
  background: transparent;
  color: var(--text-soft);
  font-family: var(--font-body);
  font-size: var(--fs-300);
  line-height: 1.3;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.page-faq .filter-btn:hover {
  border-color: var(--line-strong);
  color: var(--white);
}

.page-faq .filter-btn[aria-pressed="true"] {
  border-color: var(--orange);
  color: var(--flare);
  background: rgba(226, 87, 30, 0.1);
}

.page-faq .filter-btn:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.page-faq .filter-count {
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  letter-spacing: 0.06em;
  color: var(--teal);
}

/* ---------- 客服时段刻度 ---------- */
.page-faq .faq-clock {
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .clock-track {
  position: relative;
  height: 10px;
  background: var(--brick-dark);
  border: 1px solid var(--faq-rule);
}

.page-faq .clock-fill {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 37.5%;
  width: 37.5%;
  background: linear-gradient(90deg, var(--orange), var(--flare));
}

.page-faq .clock-ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--text-dim);
}

.page-faq .clock-note {
  margin: 16px 0 0;
  font-size: var(--fs-300);
  line-height: 1.7;
  color: var(--seam);
}

/* ---------- 条目列表 ---------- */
.page-faq .faq-list {
  min-width: 0;
}

.page-faq .faq-list-title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  font-weight: 400;
  letter-spacing: 0.16em;
  color: var(--text-dim);
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
}

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

.page-faq .qa-item details {
  display: block;
}

.page-faq .qa-summary {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: baseline;
  column-gap: 12px;
  padding: 20px 4px;
  cursor: pointer;
  list-style: none;
  transition: background-color 0.2s ease;
}

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

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

.page-faq .qa-summary:hover {
  background: rgba(58, 64, 70, 0.28);
}

.page-faq .qa-summary:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: -2px;
}

.page-faq .qa-no {
  font-size: var(--fs-200);
  letter-spacing: 0.06em;
  color: var(--text-dim);
  transition: color 0.2s ease;
}

.page-faq .qa-q {
  font-size: var(--fs-400);
  font-weight: 600;
  line-height: 1.55;
  color: var(--white);
}

.page-faq .qa-cat {
  display: none;
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  letter-spacing: 0.06em;
  color: var(--seam);
  white-space: nowrap;
}

.page-faq .qa-item details[open] .qa-no {
  color: var(--orange);
}

.page-faq .qa-item details[open] .qa-q {
  color: var(--flare);
}

.page-faq .qa-a {
  padding: 0 4px 24px;
  border-left: 2px solid var(--brick-mid);
  margin-left: 4px;
  padding-left: 14px;
}

.page-faq .qa-a p {
  margin: 0;
  max-width: 52ch;
  font-size: var(--fs-400);
  line-height: 1.78;
  color: var(--text-soft);
}

.page-faq .qa-a a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 184, 160, 0.42);
}

.page-faq .qa-a a:hover,
.page-faq .qa-a a:focus-visible {
  border-bottom-color: var(--teal);
}

/* ---------- 人工通道 ---------- */
.page-faq .faq-help {
  background: var(--brick-dark);
  border-top: 1px solid var(--line);
  padding: clamp(48px, 7vw, 96px) 0;
}

.page-faq .faq-help-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  align-items: center;
}

.page-faq .faq-help-title {
  margin: 16px 0 0;
  color: var(--white);
  line-height: 1.12;
}

.page-faq .faq-help-lede {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: var(--fs-400);
  line-height: 1.75;
  color: var(--text-soft);
}

.page-faq .faq-channels {
  margin-top: 30px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-channel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 15px 0;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-channel-label {
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  letter-spacing: 0.12em;
  color: var(--text-dim);
}

.page-faq .faq-channel-value {
  font-size: var(--fs-400);
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-faq .faq-help-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.page-faq .faq-help-media {
  margin: 0;
  width: 100%;
  max-width: 340px;
  justify-self: start;
}

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

/* ---------- 窄屏收敛 ---------- */
@media (max-width: 560px) {
  .page-faq .faq-title {
    max-width: none;
  }

  .page-faq .faq-summary {
    grid-template-columns: 30px minmax(0, 1fr);
    column-gap: 10px;
  }

  .page-faq .qa-summary {
    grid-template-columns: 30px minmax(0, 1fr);
    column-gap: 10px;
  }

  .page-faq .filter-btn {
    font-size: var(--fs-200);
    padding: 7px 13px;
  }

  .page-faq .faq-help-media {
    max-width: 100%;
  }
}

/* ---------- 中等屏：筛选条转横向工具带 ---------- */
@media (min-width: 700px) {
  .page-faq .qa-summary {
    grid-template-columns: 42px minmax(0, 1fr) auto;
    column-gap: 16px;
  }

  .page-faq .qa-cat {
    display: block;
  }

  .page-faq .qa-a {
    padding-left: 58px;
    margin-left: 4px;
  }

  .page-faq .faq-channel {
    grid-template-columns: 150px minmax(0, 1fr);
    align-items: baseline;
    gap: 0 20px;
  }
}

/* ---------- 桌面：左侧固定筛选栏 + 右侧密排条目 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 272px minmax(0, 1fr);
    column-gap: var(--faq-gap);
    align-items: start;
  }

  .page-faq .faq-side-sticky {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-filters {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .page-faq .faq-filters .faq-side-title {
    margin-bottom: 8px;
  }

  .page-faq .filter-btn {
    text-align: left;
  }

  .page-faq .faq-help-inner {
    grid-template-columns: minmax(0, 1fr) 340px;
    column-gap: 72px;
  }

  .page-faq .faq-help-media {
    justify-self: end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .filter-btn,
  .page-faq .qa-summary,
  .page-faq .qa-no,
  .page-faq .crumb-link {
    transition: none;
  }
}