.page-faq {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-deep);
  color: var(--moon);
  padding: clamp(22px, 4vw, 34px) 0 clamp(34px, 6vw, 68px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(244, 241, 232, .05) 0 1px, transparent 1px 72px);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 5px;
  background: repeating-linear-gradient(90deg, var(--gold) 0 2px, transparent 2px 26px);
  opacity: .65;
}

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

.page-faq .faq-hero .breadcrumb__link,
.page-faq .faq-hero .breadcrumb__item,
.page-faq .faq-hero .breadcrumb__sep {
  color: rgba(244, 241, 232, .68);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-faq .faq-hero .breadcrumb__link:hover {
  color: var(--gold-hi);
}

.page-faq .faq-hero .breadcrumb__item[aria-current="page"] {
  color: var(--gold);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-faq .eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold);
  margin: 0;
  text-transform: uppercase;
}

.page-faq .faq-hero h1 {
  font-family: var(--sans);
  font-weight: 900;
  font-size: clamp(28px, 4.6vw, 50px);
  line-height: 1.16;
  letter-spacing: -.015em;
  margin: 12px 0 0;
  color: var(--moon);
}

.page-faq .faq-hero__lead {
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.9;
  color: rgba(244, 241, 232, .84);
  margin: 18px 0 0;
  max-width: 34em;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero__figure {
  margin: 0;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  max-width: 100%;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
  border: 1px solid rgba(244, 241, 232, .18);
}

.page-faq .faq-hero__figure figcaption {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(244, 241, 232, .6);
  padding-top: 10px;
  margin-top: 12px;
  border-top: 1px solid rgba(244, 241, 232, .16);
}

/* ---------- 快速三步 ---------- */
.page-faq .faq-route {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-route__head {
  max-width: 46em;
}

.page-faq .faq-route__head h2,
.page-faq .faq-qa__head h2,
.page-faq .faq-help h2 {
  font-family: var(--sans);
  font-weight: 800;
  font-size: clamp(23px, 3vw, 32px);
  line-height: 1.28;
  letter-spacing: -.01em;
  margin: 10px 0 0;
  color: var(--ink-deep);
}

.page-faq .faq-route__lead,
.page-faq .faq-qa__lead {
  font-size: 15px;
  line-height: 1.9;
  color: #3d4a44;
  margin: 14px 0 0;
}

.page-faq .faq-route__body {
  display: grid;
  gap: 26px;
  margin-top: clamp(22px, 3vw, 34px);
}

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

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 18px 18px 20px;
  background: var(--moon);
  border: 1px solid var(--line);
  scroll-margin-top: 90px;
}

.page-faq .faq-step__num {
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.1;
  letter-spacing: .08em;
  color: var(--clay);
  background: rgba(166, 75, 42, .08);
  border: 1px solid rgba(166, 75, 42, .3);
  padding: 5px 8px;
  align-self: start;
}

.page-faq .faq-step__main h3 {
  font-family: var(--sans);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.45;
  margin: 0 0 8px;
  color: var(--ink-deep);
}

.page-faq .faq-step__main p {
  font-size: 14.5px;
  line-height: 1.85;
  color: #3d4a44;
  margin: 0 0 12px;
}

.page-faq .faq-step__link {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--clay);
  text-decoration: none;
  border-bottom: 1px solid rgba(166, 75, 42, .4);
  padding-bottom: 2px;
}

.page-faq .faq-step__link:hover {
  color: var(--clay-deep);
  border-bottom-color: var(--clay-deep);
}

.page-faq .faq-route__figure {
  margin: 0;
  background: var(--ink-deep);
}

.page-faq .faq-route__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 640 / 420;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-route__figure figcaption {
  font-size: 13px;
  line-height: 1.75;
  color: rgba(244, 241, 232, .78);
  padding: 12px 16px 14px;
  border-left: 3px solid var(--gold);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-qa {
  background: var(--paper);
}

.page-faq .faq-qa__head {
  max-width: 46em;
  padding-bottom: clamp(16px, 2.4vw, 24px);
  border-bottom: 2px solid var(--ink);
}

.page-faq .faq-qa__layout {
  display: grid;
  gap: 30px;
  margin-top: clamp(22px, 3vw, 32px);
}

/* 左侧分类索引 */
.page-faq .faq-toc {
  background: var(--moon);
  border-top: 3px solid var(--ink-deep);
  padding: 16px 16px 18px;
}

.page-faq .faq-toc__title {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--text-mute);
  margin: 0 0 12px;
}

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

.page-faq .faq-toc__link {
  display: grid;
  grid-template-columns: 2.6em 1fr;
  gap: 8px;
  align-items: baseline;
  padding: 10px 2px;
  border-bottom: 1px dashed var(--line);
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.55;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--clay);
}

.page-faq .faq-toc__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--clay);
}

.page-faq .faq-toc__note {
  margin-top: 16px;
  padding: 14px 14px 16px;
  background: rgba(46, 107, 94, .1);
  border-left: 3px solid var(--tea);
}

.page-faq .faq-toc__note-title {
  font-family: var(--sans);
  font-weight: 800;
  font-size: 14px;
  color: var(--ink-deep);
  margin: 0 0 6px;
}

.page-faq .faq-toc__note p {
  font-size: 13px;
  line-height: 1.8;
  color: #3d4a44;
  margin: 0 0 12px;
}

.page-faq .faq-toc__note p:last-of-type {
  margin-bottom: 14px;
}

/* 筛选条 */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 0 0 16px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-filter .filter-btn {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 700;
  padding: 7px 13px;
  border: 1px solid var(--line);
  background: var(--moon);
  color: var(--ink-deep);
  cursor: pointer;
  transition: background .16s, color .16s, border-color .16s;
}

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

.page-faq .faq-filter .filter-btn[aria-pressed="true"],
.page-faq .faq-filter .filter-btn.is-active {
  background: var(--ink-deep);
  border-color: var(--ink-deep);
  color: var(--moon);
}

.page-faq .faq-filter .filter-status {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--text-mute);
}

/* 分类分组 */
.page-faq .faq-cat {
  margin-top: clamp(26px, 3.4vw, 40px);
  scroll-margin-top: 90px;
}

.page-faq .faq-cat__title {
  display: flex;
  gap: 10px;
  align-items: baseline;
  font-family: var(--sans);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.4;
  color: var(--ink-deep);
  margin: 0 0 14px;
  padding-bottom: 9px;
  border-bottom: 2px solid var(--ink-deep);
}

.page-faq .faq-cat__title .mono {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--clay);
}

/* 折叠条目 */
.page-faq .faq-item {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 3px solid var(--fog);
  margin-bottom: 8px;
  transition: border-color .18s, background .18s;
}

.page-faq .faq-item[open] {
  background: var(--moon);
  border-left-color: var(--gold);
}

.page-faq .faq-item__sum {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: start;
  padding: 14px 14px;
  cursor: pointer;
  list-style: none;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink);
}

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

.page-faq .faq-item__sum:hover {
  color: var(--ink-deep);
}

.page-faq .faq-item__sum:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: -2px;
}

.page-faq .faq-item__no {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--clay);
  padding-top: 3px;
}

.page-faq .faq-item__sum::after {
  content: "+";
  font-family: var(--mono);
  font-size: 17px;
  line-height: 1;
  color: var(--clay);
  padding-top: 1px;
}

.page-faq .faq-item[open] > .faq-item__sum::after {
  content: "−";
  color: var(--ink-deep);
}

.page-faq .faq-item__body {
  padding: 0 14px 16px;
  font-size: 14.5px;
  line-height: 1.9;
  color: #3d4a44;
}

.page-faq .faq-item__body p {
  margin: 0 0 .8em;
}

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

.page-faq .faq-item__lead {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 14.5px;
  color: var(--ink-deep);
  padding-left: 12px;
  border-left: 3px solid var(--gold);
}

.page-faq .faq-item__body a {
  color: var(--tea);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 107, 94, .4);
}

.page-faq .faq-item__body a:hover {
  color: var(--clay);
  border-bottom-color: rgba(166, 75, 42, .5);
}

/* ---------- 底部提示条 ---------- */
.page-faq .faq-help {
  border-top: 1px solid var(--line);
}

.page-faq .faq-help__inner {
  display: grid;
  gap: 22px;
}

.page-faq .faq-help__text p {
  font-size: 15px;
  line-height: 1.9;
  color: #3d4a44;
  margin: 14px 0 0;
  max-width: 40em;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-item__sum {
    padding: 16px 20px;
    gap: 14px;
    font-size: 16px;
  }

  .page-faq .faq-item__body {
    padding: 0 20px 20px 58px;
    font-size: 15px;
  }

  .page-faq .faq-step {
    padding: 20px 22px;
  }

  .page-faq .faq-step__main h3 {
    font-size: 18px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr);
    align-items: end;
  }

  .page-faq .faq-route__body {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, .68fr);
    align-items: start;
    gap: 32px;
  }

  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
  }

  .page-faq .faq-help__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-qa__layout {
    grid-template-columns: 268px minmax(0, 1fr);
    gap: 46px;
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 24px;
    padding: 20px 18px 20px;
  }

  .page-faq .faq-item__sum {
    padding: 18px 22px;
  }

  .page-faq .faq-item__body {
    padding: 0 22px 22px 60px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-filter .filter-btn {
    transition: none;
  }
}