.page-faq {
  --faq-sticky: 96px;
  background:
    radial-gradient(120% 55% at 82% -10%, rgba(212, 166, 74, .12), transparent 62%),
    var(--c-ink);
  color: var(--c-ivory);
}

.page-faq .breadcrumb {
  margin: 0;
  padding-top: clamp(18px, 3vw, 30px);
  font-size: 13px;
  color: var(--c-mist);
}

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

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--c-gold-soft);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding: clamp(22px, 3.4vw, 38px) 0 clamp(44px, 6vw, 76px);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(33px, 6.6vw, 66px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 12px 0 0;
  color: var(--c-ivory);
}

.page-faq .faq-hero__intro {
  margin: 20px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-mist);
}

.page-faq .faq-hero__aside {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-faq .faq-hero__aside .media-frame {
  border: 1px solid var(--c-line);
  background: var(--c-veil);
}

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

/* ---------- 三步路径 ---------- */
.page-faq .steps {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  border-top: var(--hair);
}

.page-faq .steps__item {
  position: relative;
  padding: 16px 0 16px 58px;
  border-bottom: var(--hair-dim);
}

.page-faq .steps__num {
  position: absolute;
  left: 0;
  top: 17px;
  font-family: var(--font-num);
  font-size: 24px;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--c-gold);
}

.page-faq .steps__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--c-ivory);
  transition: color .24s var(--ease);
}

.page-faq .steps__text {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-mist);
  max-width: 52ch;
}

.page-faq .steps__item:hover .steps__title,
.page-faq .steps__item:focus-within .steps__title {
  color: var(--c-gold-soft);
}

/* ---------- 速览数字 ---------- */
.page-faq .faq-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-faq .faq-facts > div {
  background: var(--c-veil);
  padding: 13px 15px;
}

.page-faq .faq-facts dt {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-mist);
}

.page-faq .faq-facts dd {
  margin: 0;
  font-family: var(--font-num);
  font-size: 21px;
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--c-gold-soft);
}

/* ---------- 主体 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding: clamp(38px, 5.4vw, 68px) 0 clamp(46px, 6.6vw, 92px);
}

.page-faq .faq-rail__label {
  margin: 0 0 10px;
  padding-bottom: 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-gold);
  border-bottom: var(--hair);
}

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

.page-faq .faq-rail__link {
  display: flex;
  flex: 0 0 auto;
  align-items: baseline;
  gap: 8px;
  padding: 8px 13px;
  font-size: 13px;
  line-height: 1.5;
  white-space: nowrap;
  color: var(--c-mist);
  text-decoration: none;
  border: 1px solid var(--c-line);
  transition: color .24s var(--ease), border-color .24s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--c-gold-soft);
  border-color: var(--c-gold);
}

.page-faq .faq-rail__num {
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--c-gold);
}

/* ---------- 章节 ---------- */
.page-faq .faq-sec {
  padding-bottom: clamp(34px, 4.6vw, 54px);
  margin-bottom: clamp(34px, 4.6vw, 54px);
  border-bottom: var(--hair-dim);
  scroll-margin-top: 104px;
}

.page-faq .faq-sec:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 20px;
}

.page-faq .faq-sec__num {
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-size: 32px;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--c-gold);
}

.page-faq .faq-sec__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--c-ivory);
}

.page-faq .faq-text {
  margin: 0 0 16px;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-mist);
}

.page-faq .faq-route-link {
  margin: 22px 0 0;
}

/* ---------- 双栏 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  margin-top: 22px;
}

.page-faq .faq-split .media-frame {
  border: 1px solid var(--c-line);
  background: var(--c-veil);
}

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

.page-faq .panel {
  border: 1px solid var(--c-line);
  background: rgba(16, 35, 63, 0.55);
  padding: 18px 18px 6px;
}

.page-faq .panel--alert {
  border-color: rgba(196, 73, 54, 0.5);
  background: rgba(196, 73, 54, 0.07);
}

.page-faq .panel__title {
  margin: 0 0 12px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--c-gold);
}

.page-faq .panel--alert .panel__title {
  color: var(--c-cinnabar);
}

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

.page-faq .panel__list li {
  position: relative;
  padding: 0 0 12px 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-mist);
}

.page-faq .panel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 1px;
  background: var(--c-gold);
}

.page-faq .panel--alert .panel__list li::before {
  background: var(--c-cinnabar);
}

.page-faq .panel__list--tight {
  margin: 0 0 16px;
}

.page-faq .panel__list--tight li {
  padding-left: 16px;
}

/* ---------- 筛选演示 ---------- */
.page-faq .filter-demo {
  margin-top: 28px;
  padding-top: 22px;
  border-top: var(--hair);
}

.page-faq .filter-demo__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-gold);
}

.page-faq .faq-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 18px;
}

.page-faq .filter-btn {
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.06em;
  padding: 8px 15px;
  border: 1px solid var(--c-line);
  background: transparent;
  color: var(--c-mist);
  cursor: pointer;
  transition: color .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
}

.page-faq .filter-btn:hover,
.page-faq .filter-btn:focus-visible {
  color: var(--c-gold-soft);
  border-color: var(--c-gold);
}

.page-faq .filter-btn[aria-pressed="true"] {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: var(--c-ink-deep);
  font-weight: 600;
}

.page-faq .records {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--hair);
}

.page-faq .records__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 3px;
  padding: 13px 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-mist);
  border-bottom: var(--hair-dim);
}

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

.page-faq .records__time {
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--c-gold);
}

.page-faq .records__type {
  font-size: 13px;
  color: var(--c-ivory);
}

.page-faq .records__note {
  font-size: 14px;
  color: var(--c-mist);
}

.page-faq .records__status {
  margin: 14px 0 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--c-mist);
}

.page-faq .records__status span[data-filter-status] {
  font-family: var(--font-num);
  font-size: 17px;
  color: var(--c-gold-soft);
  margin-right: 4px;
}

/* ---------- 分类标签 ---------- */
.page-faq .chip-row {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 22px;
  padding: 0;
}

.page-faq .chip {
  padding: 7px 13px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--c-ivory);
  border: 1px solid var(--c-line);
  background: rgba(16, 35, 63, 0.6);
}

/* ---------- 产品线编号 ---------- */
.page-faq .lines {
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 20px 0 0;
  padding: 0;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-faq .lines__item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 13px 16px;
  background: var(--c-ink-deep);
}

.page-faq .lines__num {
  font-family: var(--font-num);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--c-gold);
}

.page-faq .lines__name {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--c-ivory);
}

/* ---------- 周期表 ---------- */
.page-faq .table-wrap {
  margin: 22px 0 18px;
  overflow-x: auto;
  border: 1px solid var(--c-line);
}

.page-faq .cycle-table {
  width: 100%;
  min-width: 500px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .cycle-table__caption {
  padding: 12px 14px;
  text-align: left;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-gold);
  background: rgba(16, 35, 63, 0.7);
  border-bottom: var(--hair);
}

.page-faq .cycle-table th {
  padding: 11px 14px;
  text-align: left;
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-gold-soft);
  border-bottom: var(--hair);
  background: rgba(10, 21, 36, 0.8);
}

.page-faq .cycle-table td {
  padding: 14px;
  line-height: 1.7;
  color: var(--c-mist);
  vertical-align: top;
  border-bottom: var(--hair-dim);
}

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

.page-faq .stage {
  display: inline-block;
  padding: 4px 10px;
  font-size: 12px;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.page-faq .stage--warm {
  color: var(--c-gold-soft);
  border: 1px solid rgba(212, 166, 74, 0.55);
}

.page-faq .stage--live {
  color: var(--c-cinnabar);
  border: 1px solid rgba(196, 73, 54, 0.6);
}

.page-faq .stage--review {
  color: #6FBAB2;
  border: 1px solid rgba(63, 139, 132, 0.6);
}

/* ---------- 问答 ---------- */
.page-faq .qa-group {
  margin: 0 0 30px;
}

.page-faq .qa-group:last-child {
  margin-bottom: 0;
}

.page-faq .qa-group__title {
  margin: 0 0 4px;
  padding-bottom: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--c-gold);
  border-bottom: var(--hair);
}

.page-faq .qa {
  border-bottom: var(--hair-dim);
}

.page-faq .qa > summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 15px 38px 15px 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--c-ivory);
  transition: color .22s var(--ease);
}

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

.page-faq .qa > summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 12px;
  font-size: 20px;
  line-height: 1;
  color: var(--c-gold);
}

.page-faq .qa[open] > summary::after {
  content: "−";
}

.page-faq .qa > summary:hover,
.page-faq .qa > summary:focus-visible {
  color: var(--c-gold-soft);
}

.page-faq .qa__answer {
  margin: 0;
  padding: 0 0 18px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-mist);
}

/* ---------- 联络 ---------- */
.page-faq .faq-help {
  padding: clamp(44px, 6.6vw, 82px) 0;
  border-top: 1px solid var(--c-line);
  background: linear-gradient(180deg, rgba(16, 35, 63, 0.8), var(--c-ink-deep));
}

.page-faq .faq-help__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(24px, 3.8vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--c-ivory);
}

.page-faq .faq-help__lead {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-mist);
}

.page-faq .contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 28px 0 0;
}

.page-faq .contact-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  border: 1px solid var(--c-line);
  background: rgba(10, 21, 36, 0.6);
}

.page-faq .contact-card__label {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-gold);
}

.page-faq .contact-card__value {
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-ivory);
  word-break: break-all;
}

.page-faq .contact-card .copy-btn {
  align-self: flex-start;
  margin-top: 2px;
}

.page-faq .faq-help__note {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: 13px;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-faq .help-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-faq .records__row {
    grid-template-columns: 86px 155px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-faq .contact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 38px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 0.88fr);
    gap: clamp(34px, 5vw, 74px);
    align-items: start;
  }

  .page-faq .faq-body {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: clamp(38px, 5vw, 76px);
    align-items: start;
  }

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

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

  .page-faq .faq-rail__link {
    padding: 11px 0;
    border: 0;
    border-bottom: var(--hair-dim);
    white-space: normal;
  }

  .page-faq .lines {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-faq .lines {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .steps__title,
  .page-faq .faq-rail__link,
  .page-faq .filter-btn,
  .page-faq .qa > summary {
    transition: none;
  }
}