.page-faq {
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--body);
  padding-bottom: 72px;
}

.page-faq .site-container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 20px 0;
}

.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-faq .breadcrumb-link {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease-out, border-color 0.18s ease-out;
}

.page-faq .breadcrumb-link:hover,
.page-faq .breadcrumb-link:focus-visible {
  color: var(--amber-bright);
  border-bottom-color: var(--amber);
}

.page-faq .breadcrumb-separator {
  color: var(--copper);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  display: grid;
  gap: 28px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

.page-faq .eyebrow {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2.1rem, 8.6vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 36em;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--paper);
  opacity: 0.84;
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-faq .faq-tag {
  display: inline-block;
  margin-right: 8px;
  padding: 3px 8px;
  border: 1px solid var(--line);
  color: var(--lime);
  border-radius: var(--radius);
}

/* ---------- 双场预览小面板 ---------- */

.page-faq .faq-preview {
  padding: 18px;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--ink-800), var(--ink-900) 72%);
  border-radius: var(--radius);
}

.page-faq .faq-preview__label {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--copper);
}

.page-faq .faq-preview__row {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) 50px;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-preview__row:last-of-type {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-preview__slot {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--mist);
}

.page-faq .faq-preview__bar {
  position: relative;
  height: 6px;
  background: var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-preview__bar::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 52%;
  background: var(--amber);
}

.page-faq .faq-preview__bar--b::after {
  left: 34%;
  right: 18%;
  background: var(--lime);
}

.page-faq .faq-preview__time {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--paper);
  text-align: right;
}

.page-faq .faq-preview__note {
  margin: 14px 0 0;
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 图片 ---------- */

.page-faq .faq-figure {
  margin: 34px 0 0;
}

.page-faq .image-frame {
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-800);
  border-radius: var(--radius);
}

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

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* ---------- 通用区块 ---------- */

.page-faq .faq-section,
.page-faq .faq-library {
  padding-top: 46px;
}

.page-faq .faq-kicker {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--copper);
}

.page-faq .faq-section h2,
.page-faq .faq-library h2,
.page-faq .faq-support h2 {
  margin: 0;
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.55rem, 5.6vw, 2.5rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-section__lead {
  margin: 14px 0 0;
  max-width: 42em;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 四步路径 ---------- */

.page-faq .faq-steps {
  display: grid;
  gap: 18px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--lime);
}

.page-faq .faq-step__no {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--copper);
}

.page-faq .faq-step__title {
  margin: 8px 0 6px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.16rem;
  letter-spacing: 0;
  color: var(--paper);
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 双场区块 ---------- */

.page-faq .faq-double {
  display: grid;
  gap: 26px;
}

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

.page-faq .faq-checks li {
  position: relative;
  padding-left: 22px;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  background: var(--lime);
  border-radius: var(--radius);
}

.page-faq .faq-figure--double {
  margin-top: 0;
}

/* ---------- 问答库 ---------- */

.page-faq .faq-library__head {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-library__grid {
  display: grid;
  gap: 26px;
  margin-top: 22px;
}

.page-faq .faq-toc {
  border-left: 1px solid var(--line);
  padding-left: 14px;
}

.page-faq .faq-toc__label {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--copper);
}

.page-faq .faq-toc__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x proximity;
}

.page-faq .faq-toc__link {
  display: block;
  flex: none;
  scroll-snap-align: start;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--mist);
  font-size: 0.84rem;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s ease-out, border-color 0.18s ease-out, background-color 0.18s ease-out;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--amber-bright);
  border-color: var(--amber);
  background: var(--ink-800);
  outline: none;
}

.page-faq .faq-group + .faq-group {
  margin-top: 34px;
}

.page-faq .faq-group__title {
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: 0;
  color: var(--paper);
}

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

.page-faq .faq-item summary {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 0;
  list-style: none;
  cursor: pointer;
  font-size: 0.97rem;
  font-weight: 500;
  line-height: 1.65;
  color: var(--paper);
  transition: color 0.18s ease-out;
}

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

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--amber);
}

.page-faq .faq-item[open] summary::after {
  content: "–";
  color: var(--lime);
}

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--amber-bright);
  outline: none;
}

.page-faq .faq-item__no {
  flex: none;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--copper);
}

.page-faq .faq-item[open] .faq-item__no {
  color: var(--lime);
}

.page-faq .faq-item__body {
  margin: 0 0 16px;
  font-size: 0.92rem;
  line-height: 1.82;
  color: var(--mist);
}

/* ---------- 联系支持 ---------- */

.page-faq .faq-support {
  margin-top: 54px;
  padding: 26px 20px 24px;
  border: 1px solid var(--line);
  background: linear-gradient(155deg, var(--ink-800), var(--ink-950) 80%);
  border-radius: var(--radius);
}

.page-faq .faq-support__copy p {
  margin: 14px 0 0;
  max-width: 40em;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-faq .faq-support__list {
  display: grid;
  gap: 0;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .faq-support__item {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-support__label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--copper);
}

.page-faq .faq-support__value {
  font-size: 0.94rem;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-support__note {
  margin: 20px 0 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-support__note a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 0.18s ease-out, border-color 0.18s ease-out;
}

.page-faq .faq-support__note a:hover,
.page-faq .faq-support__note a:focus-visible {
  color: var(--amber-bright);
  border-bottom-color: var(--amber-bright);
}

.page-faq .faq-top {
  display: inline-block;
  margin-top: 22px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 0.18s ease-out, border-color 0.18s ease-out;
}

.page-faq .faq-top:hover,
.page-faq .faq-top:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

/* ---------- 桌面端 ---------- */

@media (min-width: 760px) {
  .page-faq .site-container {
    padding-inline: var(--gutter);
    padding-top: 26px;
  }

  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
    gap: 44px;
    padding-bottom: 44px;
  }

  .page-faq .faq-figure {
    margin-top: 44px;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-faq .faq-step {
    border-top: 0;
    border-left: 1px solid var(--line);
    padding: 0 18px 0 18px;
  }

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

  .page-faq .faq-step::before {
    top: 0;
    left: -1px;
    width: 2px;
    height: 26px;
  }

  .page-faq .faq-step:first-child::before {
    left: 0;
  }

  .page-faq .faq-double {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
    gap: 40px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-library__grid {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 88px;
    padding-left: 16px;
  }

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

  .page-faq .faq-toc__link {
    padding: 8px 0 8px 12px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: transparent;
    white-space: normal;
  }

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

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

  .page-faq .faq-support {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    gap: 20px 48px;
    align-items: start;
    padding: 34px 32px;
  }

  .page-faq .faq-support__list {
    margin-top: 0;
  }

  .page-faq .faq-support__note,
  .page-faq .faq-top {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc__link,
  .page-faq .faq-item summary,
  .page-faq .breadcrumb-link,
  .page-faq .faq-top,
  .page-faq .faq-support__note a {
    transition: none;
  }
}