.page-faq {
  --faq-rail-w: 17rem;
  --faq-sticky: 84px;
  background: var(--ts-paper);
  color: var(--ts-graphite);
  overflow-x: clip;
}

.page-faq .faq-crumb {
  padding-top: clamp(16px, 3vw, 28px);
  background: var(--ts-paper);
}

.page-faq .ts-breadcrumb a {
  color: var(--ts-mist);
  text-decoration: none;
}
.page-faq .ts-breadcrumb a:hover {
  color: var(--ts-orange);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  background: var(--ts-navy);
  color: var(--ts-paper);
  padding: clamp(38px, 6vw, 84px) 0 clamp(40px, 6vw, 88px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    to right,
    rgba(200, 205, 210, 0.09) 0 1px,
    transparent 1px 8.3333%
  );
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
}

.page-faq .faq-hero .ts-eyebrow {
  color: var(--ts-orange);
  letter-spacing: 0.1em;
}

.page-faq .faq-hero h1 {
  margin: 0.5em 0 0.7em;
  font-family: var(--ts-font-sans);
  font-weight: 800;
  font-size: clamp(28px, 4.6vw, 56px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: #ffffff;
  max-width: 19ch;
}

.page-faq .faq-hero .ts-lede {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.75;
  color: rgba(245, 242, 236, 0.82);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0;
  background: rgba(200, 205, 210, 0.24);
  border-top: 1px solid rgba(232, 199, 154, 0.42);
}

.page-faq .faq-stat {
  margin: 0;
  padding: 16px 14px 14px;
  background: var(--ts-navy);
}

.page-faq .faq-stat__label {
  margin: 0 0 8px;
  font-family: var(--ts-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(200, 205, 210, 0.72);
}

.page-faq .faq-stat__value {
  display: flex;
  align-items: baseline;
  gap: 3px;
  margin: 0;
  padding-bottom: 6px;
  font-family: var(--ts-font-mono);
  font-size: clamp(26px, 3.2vw, 38px);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--ts-orange);
  border-bottom: 2px solid rgba(232, 199, 154, 0.55);
}

.page-faq .faq-stat__unit,
.page-faq .faq-stat__dash {
  font-size: 0.5em;
  font-weight: 600;
  color: var(--ts-gold);
}

/* ---------- 分类筛选条 ---------- */

.page-faq .faq-tools {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--ts-paper);
  border-bottom: 1px solid var(--ts-line);
  padding: 12px 0;
}

.page-faq .faq-tools__inner {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.page-faq .faq-tools__key {
  flex: 0 0 auto;
  font-family: var(--ts-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ts-mist);
}

.page-faq .faq-filter {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  min-width: 0;
}

.page-faq .faq-filter .ts-filter__btn {
  appearance: none;
  border: 1px solid var(--ts-line-strong);
  background: transparent;
  color: var(--ts-graphite);
  font: inherit;
  font-size: 14px;
  line-height: 1.2;
  padding: 7px 13px;
  border-radius: 0;
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--ts-step) var(--ts-ease),
    border-color var(--ts-step) var(--ts-ease),
    background-color var(--ts-step) var(--ts-ease);
}

.page-faq .faq-filter .ts-filter__btn:hover {
  color: var(--ts-orange);
  border-color: var(--ts-orange);
}

.page-faq .faq-filter .ts-filter__btn[aria-pressed="true"],
.page-faq .faq-filter .ts-filter__btn.is-active {
  background: var(--ts-navy);
  border-color: var(--ts-navy);
  color: var(--ts-paper);
  box-shadow: inset 0 -3px 0 var(--ts-orange);
}

.page-faq .faq-filter .ts-filter__status {
  font-family: var(--ts-font-mono);
  font-size: 13px;
  color: var(--ts-mist);
}

/* ---------- 主体画布 ---------- */

.page-faq .faq-canvas {
  padding: clamp(34px, 5vw, 72px) 0 clamp(46px, 6vw, 88px);
}

.page-faq .faq-canvas__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 56px);
}

/* ---------- 左栏索引刻度 ---------- */

.page-faq .faq-rail__nav {
  display: flex;
  flex-direction: row;
  overflow-x: auto;
  scrollbar-width: none;
  border-bottom: 1px solid var(--ts-line);
}

.page-faq .faq-rail__nav::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail__link {
  position: relative;
  flex: 0 0 auto;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 16px 11px 16px;
  border-left: 1px solid var(--ts-line);
  text-decoration: none;
  color: var(--ts-graphite);
  font-size: 15px;
  transition: color var(--ts-step) var(--ts-ease);
}

.page-faq .faq-rail__link:first-child {
  border-left: 0;
}

.page-faq .faq-rail__link::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 6px;
  height: 2px;
  background: var(--ts-silver);
  transition: width var(--ts-step) var(--ts-ease),
    background-color var(--ts-step) var(--ts-ease);
}

.page-faq .faq-rail__name {
  font-weight: 600;
}

.page-faq .faq-rail__count {
  font-family: var(--ts-font-mono);
  font-size: 12px;
  color: var(--ts-mist);
  white-space: nowrap;
}

.page-faq .faq-rail__link:hover {
  color: var(--ts-orange);
}

.page-faq .faq-rail__link[aria-current="true"] .faq-rail__name {
  color: var(--ts-navy);
  font-weight: 800;
}

.page-faq .faq-rail__link:hover::before,
.page-faq .faq-rail__link[aria-current="true"]::before {
  width: 16px;
  background: var(--ts-orange);
}

.page-faq .faq-rail__note {
  display: none;
  margin: 22px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--ts-copper);
  font-size: 13px;
  line-height: 1.65;
  color: var(--ts-mist);
}

/* ---------- 问题流 ---------- */

.page-faq .faq-stream {
  display: flex;
  flex-direction: column;
  gap: clamp(44px, 6vw, 80px);
  min-width: 0;
}

.page-faq .faq-group {
  min-width: 0;
  scroll-margin-top: clamp(96px, 12vw, 132px);
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ts-navy);
}

.page-faq .faq-group__idx {
  font-family: var(--ts-font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--ts-orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--ts-font-sans);
  font-weight: 800;
  font-size: clamp(21px, 2.6vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--ts-navy);
}

.page-faq .faq-group__intro {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ts-mist);
}

.page-faq .faq-list {
  margin-top: 20px;
  border-top: 1px solid var(--ts-line);
}

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

.page-faq .faq-item__h {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .faq-item__trigger {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  width: 100%;
  padding: 18px 0;
  background: none;
  border: 0;
  text-align: left;
  font: inherit;
  color: var(--ts-graphite);
  cursor: pointer;
  transition: color var(--ts-step) var(--ts-ease);
}

.page-faq .faq-item__trigger:hover {
  color: var(--ts-navy);
}

.page-faq .faq-item__trigger:focus-visible {
  outline: 2px solid var(--ts-orange);
  outline-offset: 2px;
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  min-width: 2.1em;
  padding-top: 3px;
  font-family: var(--ts-font-mono);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  color: var(--ts-copper);
  border-bottom: 2px solid var(--ts-gold);
  transition: color var(--ts-step) var(--ts-ease),
    border-color var(--ts-step) var(--ts-ease);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
  font-size: clamp(16px, 1.6vw, 18px);
  font-weight: 600;
  line-height: 1.5;
}

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 auto;
  width: 12px;
  height: 12px;
  margin-top: 7px;
  margin-left: auto;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--ts-copper);
  transition: transform var(--ts-step) var(--ts-ease),
    background-color var(--ts-step) var(--ts-ease);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 5px;
  width: 12px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  left: 5px;
  top: 0;
  width: 2px;
  height: 12px;
}

.page-faq .faq-item__trigger[aria-expanded="true"] {
  color: var(--ts-navy);
}

.page-faq .faq-item__trigger[aria-expanded="true"] .faq-item__num {
  color: var(--ts-orange);
  border-bottom-color: var(--ts-orange);
}

.page-faq .faq-item__trigger[aria-expanded="true"] .faq-item__mark::after {
  transform: scaleY(0);
}

.page-faq .faq-item__trigger[aria-expanded="true"] .faq-item__mark::before {
  background: var(--ts-orange);
}

.page-faq .faq-item__panel {
  padding: 0 0 22px;
}

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

.page-faq .faq-item__panel > p {
  margin: 0 0 10px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ts-graphite);
}

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

.page-faq .faq-item__panel ul {
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 7px;
}

.page-faq .faq-item__panel li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--ts-graphite);
}

.page-faq .faq-item__panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 1px;
  background: var(--ts-copper);
}

.page-faq .faq-item__more {
  margin-top: 12px !important;
}

.page-faq .faq-item__more a {
  display: inline-block;
  padding-bottom: 2px;
  font-size: 14px;
  color: var(--ts-navy);
  text-decoration: none;
  border-bottom: 1px solid var(--ts-copper);
  transition: color var(--ts-step) var(--ts-ease),
    border-color var(--ts-step) var(--ts-ease);
}

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

.page-faq .faq-figure {
  margin: 14px 0 4px;
}

.page-faq .faq-figure .ts-figure__cap {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ts-mist);
}

/* ---------- 收尾 ---------- */

.page-faq .faq-tail {
  position: relative;
  background: var(--ts-navy);
  color: var(--ts-paper);
  padding: clamp(40px, 6vw, 76px) 0;
}

.page-faq .faq-tail::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background-image: repeating-linear-gradient(
    to right,
    var(--ts-orange) 0 2px,
    transparent 2px 26px
  );
  opacity: 0.6;
}

.page-faq .faq-tail__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-faq .faq-tail .ts-eyebrow {
  color: var(--ts-orange);
  letter-spacing: 0.1em;
}

.page-faq .faq-tail h2 {
  margin: 10px 0 12px;
  font-family: var(--ts-font-sans);
  font-weight: 800;
  font-size: clamp(21px, 2.6vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.page-faq .faq-tail p {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(245, 242, 236, 0.8);
}

.page-faq .faq-tail__fine {
  margin-top: 14px !important;
  font-size: 13px !important;
  color: rgba(200, 205, 210, 0.72) !important;
}

.page-faq .faq-tail__fine a {
  color: var(--ts-gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-tail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-faq .faq-rail__nav {
    flex-direction: column;
    overflow: visible;
    border-bottom: 0;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: var(--faq-sticky);
    align-self: start;
  }

  .page-faq .faq-rail__link {
    justify-content: space-between;
    padding: 13px 4px 13px 18px;
    border-left: 0;
    border-bottom: 1px solid var(--ts-line);
  }

  .page-faq .faq-rail__link:first-child {
    border-top: 1px solid var(--ts-line);
  }

  .page-faq .faq-rail__link::before {
    left: 0;
    top: 50%;
    bottom: auto;
    width: 6px;
    height: 2px;
    transform: translateY(-50%);
  }

  .page-faq .faq-rail__link:hover::before,
  .page-faq .faq-rail__link[aria-current="true"]::before {
    width: 13px;
  }

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

  .page-faq .faq-canvas__inner {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 72px);
  }

  .page-faq .faq-item__panel {
    padding-left: calc(2.1em + 14px);
  }

  .page-faq .faq-tail__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: center;
    gap: 48px;
  }
}

@media (min-width: 1180px) {
  .page-faq {
    --faq-rail-w: 19rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}