.page-faq {
  --faq-gap: clamp(26px, 4.5vw, 60px);
  --faq-line-soft: rgba(11, 36, 34, 0.12);
  background-color: var(--paper);
  background-image:
    repeating-linear-gradient(90deg, rgba(63, 115, 112, 0.11) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(180deg, rgba(63, 115, 112, 0.07) 0 1px, transparent 1px 96px);
  color: var(--ink);
  overflow-x: hidden;
  padding-bottom: clamp(40px, 7vw, 90px);
}

.page-faq .wrap {
  width: 100%;
}

.page-faq [id] {
  scroll-margin-top: 96px;
}

/* 面包屑 */
.page-faq .breadcrumb {
  padding-top: clamp(14px, 2vw, 22px);
}
.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}
.page-faq .breadcrumb__link {
  color: var(--karst);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s ease, color 0.18s ease;
}
.page-faq .breadcrumb__link:hover,
.page-faq .breadcrumb__link:focus-visible {
  color: var(--copper);
  border-bottom-color: var(--copper);
}
.page-faq .breadcrumb__sep {
  color: var(--blueprint);
}
.page-faq .breadcrumb__current {
  color: var(--ink-soft);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(20px, 3.5vw, 40px) 0 clamp(30px, 5vw, 56px);
}
.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}
.page-faq .page-head__coord {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--karst);
}
.page-faq .page-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(31px, 6.4vw, 64px);
  line-height: 1.08;
  letter-spacing: 0.01em;
  color: var(--ink);
}
.page-faq .page-head__lede {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.8;
  color: var(--ink-soft);
}
.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.page-faq .faq-hero__panel {
  position: relative;
  padding: clamp(22px, 3vw, 34px);
  background: var(--karst);
  color: var(--white);
  border: 1px solid var(--karst-deep);
  box-shadow: 10px 10px 0 rgba(184, 111, 59, 0.32);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}
.page-faq .faq-hero__panel::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 78px;
  height: 6px;
  background: var(--tangerine);
}
.page-faq .faq-hero__panel-no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(46px, 8vw, 74px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--paper);
}
.page-faq .faq-hero__panel-text {
  margin: 10px 0 18px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 253, 247, 0.86);
}
.page-faq .faq-hero__ticks {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(243, 233, 215, 0.28);
}
.page-faq .faq-hero__ticks li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid rgba(243, 233, 215, 0.16);
  font-size: 13.5px;
  letter-spacing: 0.02em;
}
.page-faq .faq-hero__ticks li span:last-child {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--celadon);
}

/* 主体：侧栏 + 内容流 */
.page-faq .faq-stage {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
}
.page-faq .faq-rail {
  border: 1px solid var(--line-strong);
  background: rgba(255, 253, 247, 0.9);
  padding: 12px 14px;
}
.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--copper);
}
.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
}
.page-faq .faq-rail__link {
  display: inline-block;
  white-space: nowrap;
  padding: 6px 10px;
  font-size: 13px;
  color: var(--ink);
  text-decoration: none;
  border: 1px solid var(--line);
  background: var(--paper);
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  background: var(--karst);
  color: var(--white);
  border-color: var(--karst-deep);
}

/* 区块通用 */
.page-faq .section {
  padding: clamp(28px, 4.5vw, 56px) 0;
  border-top: 1px solid var(--faq-line-soft);
}
.page-faq .section:first-child {
  border-top: 0;
}
.page-faq .section__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--copper);
}
.page-faq .section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(25px, 4vw, 42px);
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: var(--ink);
}
.page-faq .faq-section-head__lede,
.page-faq .faq-index__lede,
.page-faq .faq-check__lede {
  margin: 14px 0 0;
  max-width: 54ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}
.page-faq .faq-section-head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

/* 五类索引 */
.page-faq .faq-index__body {
  display: grid;
  gap: 24px;
  margin-top: clamp(20px, 3vw, 32px);
}
.page-faq .faq-plaques {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-plaque {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  grid-template-areas:
    "no label"
    "no hint";
  align-items: center;
  column-gap: 14px;
  padding: 14px 16px;
  text-decoration: none;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line-strong);
  box-shadow: 4px 4px 0 rgba(11, 36, 34, 0.09);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.page-faq .faq-plaque__no {
  grid-area: no;
  font-family: var(--font-mono);
  font-size: 27px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--karst);
}
.page-faq .faq-plaque__label {
  grid-area: label;
  font-size: 16.5px;
  font-weight: 800;
  letter-spacing: 0.02em;
}
.page-faq .faq-plaque__hint {
  grid-area: hint;
  margin-top: 3px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ink-soft);
}
.page-faq .faq-plaque:hover,
.page-faq .faq-plaque:focus-visible {
  transform: translate(-3px, -3px);
  box-shadow: 8px 8px 0 var(--copper);
}
.page-faq .faq-plaque--karst {
  background: var(--karst);
  color: var(--white);
}
.page-faq .faq-plaque--karst .faq-plaque__no,
.page-faq .faq-plaque--karst .faq-plaque__hint {
  color: rgba(255, 253, 247, 0.82);
}
.page-faq .faq-plaque--copper {
  background: var(--copper);
  color: var(--white);
}
.page-faq .faq-plaque--copper .faq-plaque__no,
.page-faq .faq-plaque--copper .faq-plaque__hint {
  color: rgba(255, 253, 247, 0.86);
}
.page-faq .faq-plaque--tangerine {
  background: var(--tangerine);
  color: var(--ink);
}
.page-faq .faq-plaque--tangerine .faq-plaque__no {
  color: var(--ink);
}
.page-faq .faq-plaque--celadon {
  background: var(--celadon);
  color: var(--ink);
}
.page-faq .faq-plaque--celadon .faq-plaque__no {
  color: var(--karst-deep);
}
.page-faq .faq-plaque--cinnabar {
  background: var(--cinnabar);
  color: var(--white);
}
.page-faq .faq-plaque--cinnabar .faq-plaque__no,
.page-faq .faq-plaque--cinnabar .faq-plaque__hint {
  color: rgba(255, 253, 247, 0.84);
}
.page-faq .faq-index__media {
  margin: 0;
}
.page-faq .media__frame {
  border: 1px solid var(--line-strong);
  background: linear-gradient(150deg, var(--celadon), var(--paper-2));
  overflow: hidden;
}
.page-faq .media__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-faq .media__caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--ink-soft);
}

/* 手风琴 */
.page-faq .faq-starter__grid {
  display: grid;
  gap: 10px;
}
.page-faq .faq-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--blueprint);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}
.page-faq .faq-item[open] {
  border-left-color: var(--copper);
  box-shadow: 5px 5px 0 rgba(184, 111, 59, 0.16);
}
.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: -2px;
}
.page-faq .faq-item__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--copper);
}
.page-faq .faq-item__q {
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
}
.page-faq .faq-item__mark {
  position: relative;
  width: 16px;
  height: 16px;
  align-self: center;
}
.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--blueprint);
}
.page-faq .faq-item__mark::before {
  top: 7px;
  left: 0;
  width: 16px;
  height: 2px;
}
.page-faq .faq-item__mark::after {
  top: 0;
  left: 7px;
  width: 2px;
  height: 16px;
  transition: opacity 0.18s ease;
}
.page-faq .faq-item[open] .faq-item__mark::after {
  opacity: 0;
}
.page-faq .faq-item__body {
  padding: 2px 16px 16px;
  border-top: 1px dashed var(--line);
  margin-top: 0;
}
.page-faq .faq-item__body p {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--ink-soft);
}
.page-faq .faq-item__body a {
  color: var(--karst);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.page-faq .faq-item__body a:hover,
.page-faq .faq-item__body a:focus-visible {
  color: var(--cinnabar);
}

/* 分组 */
.page-faq .faq-group {
  padding: clamp(20px, 3vw, 30px) 0;
  border-top: 1px solid var(--faq-line-soft);
}
.page-faq .faq-group:first-of-type {
  border-top: 0;
  padding-top: 0;
}
.page-faq .faq-group__head {
  margin-bottom: 16px;
}
.page-faq .faq-group__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--copper);
}
.page-faq .faq-group__title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 27px);
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.page-faq .faq-group__hint {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
}
.page-faq .faq-group__items {
  display: grid;
  gap: 10px;
}
.page-faq .faq-group__more {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
}
.page-faq .faq-group__more a {
  color: var(--karst);
  text-decoration: none;
  border-bottom: 1px solid var(--blueprint);
  padding-bottom: 2px;
}
.page-faq .faq-group__more a:hover,
.page-faq .faq-group__more a:focus-visible {
  color: var(--cinnabar);
  border-bottom-color: var(--cinnabar);
}

/* 故障自查 */
.page-faq .faq-check__grid {
  display: grid;
  gap: clamp(22px, 3.5vw, 40px);
  align-items: start;
}
.page-faq .faq-steps {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}
.page-faq .faq-step {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px dashed var(--line);
}
.page-faq .faq-step__mark {
  width: 18px;
  height: 18px;
  margin-top: 4px;
  border: 2px solid var(--karst);
  background: var(--paper);
  position: relative;
}
.page-faq .faq-step__mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  background: var(--copper);
}
.page-faq .faq-step__text h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--karst-deep);
}
.page-faq .faq-step__text p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}
.page-faq .faq-check__tail {
  margin: 20px 0 0;
  padding: 14px 16px;
  background: rgba(169, 207, 194, 0.32);
  border-left: 3px solid var(--copper);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
}
.page-faq .faq-check__tail a {
  color: var(--karst-deep);
  font-weight: 700;
}
.page-faq .faq-check__media {
  margin: 0;
}

/* 检索技巧 */
.page-faq .faq-locate__grid {
  display: grid;
  gap: 14px;
}
.page-faq .faq-way {
  padding: 20px 20px 22px;
  background: var(--white);
  border: 1px solid var(--line-strong);
  border-top: 4px solid var(--karst);
}
.page-faq .faq-way__no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--white);
  background: var(--copper);
  padding: 3px 9px;
}
.page-faq .faq-way h3 {
  margin: 14px 0 8px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: var(--ink);
}
.page-faq .faq-way p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* 反馈 */
.page-faq .faq-support {
  border-top: 0;
  padding-bottom: clamp(10px, 2vw, 20px);
}
.page-faq .faq-support__inner {
  position: relative;
  padding: clamp(24px, 4vw, 48px);
  background: var(--night);
  color: var(--paper);
  border: 1px solid var(--karst-deep);
}
.page-faq .faq-support__inner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 120px;
  height: 5px;
  background: var(--tangerine);
}
.page-faq .faq-support__tag {
  display: inline-block;
  margin-bottom: 16px;
}
.page-faq .faq-support__title {
  color: var(--paper);
}
.page-faq .faq-support__lede {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(243, 233, 215, 0.82);
}
.page-faq .faq-support__cols {
  display: grid;
  gap: 22px;
  margin: 26px 0 0;
  padding-top: 22px;
  border-top: 1px solid rgba(243, 233, 215, 0.22);
}
.page-faq .faq-support__col h3 {
  margin: 0 0 10px;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--celadon);
}
.page-faq .faq-support__list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-support__list li {
  position: relative;
  padding: 6px 0 6px 16px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(243, 233, 215, 0.9);
  border-bottom: 1px solid rgba(243, 233, 215, 0.12);
}
.page-faq .faq-support__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  width: 6px;
  height: 6px;
  background: var(--tangerine);
}
.page-faq .faq-support__contact {
  margin: 0;
}
.page-faq .faq-support__contact dt {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(169, 207, 194, 0.9);
}
.page-faq .faq-support__contact dd {
  margin: 4px 0 12px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.6;
  word-break: break-word;
  color: var(--paper);
}
.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.page-faq .faq-support__note {
  margin: 18px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(243, 233, 215, 0.7);
}

/* 平板与桌面 */
@media (min-width: 760px) {
  .page-faq .faq-starter__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 14px;
  }
  .page-faq .faq-index__body {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
    gap: 28px;
  }
  .page-faq .faq-locate__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }
  .page-faq .faq-way:nth-child(2) {
    margin-top: 26px;
    border-top-color: var(--tangerine);
  }
  .page-faq .faq-way:nth-child(3) {
    margin-top: 52px;
    border-top-color: var(--cinnabar);
  }
  .page-faq .faq-check__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }
  .page-faq .faq-support__cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    align-items: center;
  }
  .page-faq .faq-group {
    display: grid;
    grid-template-columns: 200px minmax(0, 1fr);
    gap: clamp(20px, 4vw, 48px);
    align-items: start;
  }
  .page-faq .faq-group__head {
    margin-bottom: 0;
    padding-right: 18px;
    border-right: 1px solid var(--line);
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-stage {
    grid-template-columns: minmax(0, 1fr) 190px;
    align-items: start;
  }
  .page-faq .faq-flow {
    grid-column: 1;
    grid-row: 1;
    min-width: 0;
  }
  .page-faq .faq-rail {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: 92px;
    padding: 14px 12px;
  }
  .page-faq .faq-rail__list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
    gap: 4px;
  }
  .page-faq .faq-rail__link {
    display: block;
    white-space: normal;
    border-color: transparent;
    background: transparent;
    padding: 7px 8px;
    border-left: 2px solid var(--line);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-plaque,
  .page-faq .faq-rail__link,
  .page-faq .faq-item,
  .page-faq .faq-item__mark::after,
  .page-faq .breadcrumb__link {
    transition: none;
  }
  .page-faq .faq-plaque:hover,
  .page-faq .faq-plaque:focus-visible {
    transform: none;
  }
}
<<<END>>>