.page-faq {
  --faq-tool-bg: #e6ebe3;
  --faq-tool-edge: #ccd6cb;
  --faq-shot-line: #b7c4b8;
  background: var(--bone);
  color: var(--peat);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq .faq-shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-faq h1,
.page-faq h2,
.page-faq h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.2;
}

.page-faq p {
  margin: 0;
}

.page-faq a:focus-visible,
.page-faq summary:focus-visible,
.page-faq input:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.page-faq .faq-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.page-faq .faq-h2 {
  font-size: clamp(23px, 3.6vw, 36px);
}

.page-faq .faq-h2--light {
  color: var(--bone);
}

.page-faq .faq-kicker {
  display: inline-block;
  padding-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--ice-deep);
}

.page-faq .faq-kicker--light {
  color: var(--ice-pale);
}

.page-faq .faq-lead {
  margin-top: 10px;
  max-width: 60em;
  font-size: 15px;
  color: var(--peat-soft);
}

/* 首屏 */
.page-faq .faq-hero {
  padding-block: clamp(16px, 3vw, 26px) clamp(26px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 92% 0%, rgba(63, 169, 245, .16), transparent 58%),
    repeating-linear-gradient(180deg, rgba(43, 33, 27, .035) 0 1px, transparent 1px 96px),
    var(--bone);
}

.page-faq .faq-crumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
}

.page-faq .faq-crumb__item {
  color: rgba(43, 33, 27, .62);
}

.page-faq .faq-crumb__item + .faq-crumb__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--frost);
}

.page-faq .faq-crumb__link {
  color: var(--ice-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(27, 111, 158, .35);
}

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

.page-faq .faq-hero h1 {
  margin-top: 14px;
  max-width: 18em;
  font-size: clamp(28px, 6vw, 56px);
  line-height: 1.1;
  letter-spacing: -.028em;
}

.page-faq .faq-hero__intro {
  margin-top: 16px;
  max-width: 34em;
  color: var(--peat-soft);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-chip {
  padding: 5px 10px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, .45);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--peat-soft);
}

@media (min-width: 720px) {
  .page-faq .faq-hero__intro {
    font-size: 18px;
  }
}

/* 三项快速判断 */
.page-faq .faq-triage {
  padding-block: clamp(26px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-triage__head {
  margin-bottom: 20px;
}

.page-faq .faq-triage__grid {
  display: grid;
  gap: 14px;
}

.page-faq .faq-triage__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-top: 3px solid var(--ice);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  transition: transform .2s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-triage__card--lava {
  border-top-color: var(--lava);
}

.page-faq .faq-triage__card:hover {
  transform: translateY(-2px);
  background: #faf7f1;
  border-color: var(--line-strong);
}

.page-faq .faq-triage__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ice-deep);
}

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

.page-faq .faq-triage__text {
  font-size: 14.5px;
  color: var(--peat-soft);
}

.page-faq .faq-triage__go {
  margin-top: auto;
  padding-top: 12px;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ice-deep);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

@media (min-width: 780px) {
  .page-faq .faq-triage__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* 九步排查 */
.page-faq .faq-steps {
  padding-block: clamp(30px, 5vw, 60px);
  background: var(--faq-tool-bg);
  border-bottom: 1px solid var(--faq-tool-edge);
}

.page-faq .faq-steps__head {
  margin-bottom: 18px;
}

.page-faq .faq-rail {
  display: none;
}

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

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--faq-tool-edge);
}

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

.page-faq .faq-step__box {
  background: var(--paper);
  border: 1px solid var(--faq-tool-edge);
  border-left: 3px solid var(--frost);
  transition: border-color .2s var(--ease);
}

.page-faq .faq-step__box[open] {
  border-left-color: var(--ice);
}

.page-faq .faq-step__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-step__num {
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 700;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  color: var(--ice-deep);
}

.page-faq .faq-step__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.35;
  letter-spacing: -.01em;
}

.page-faq .faq-step__toggle {
  position: relative;
  flex: none;
  width: 20px;
  height: 20px;
  border: 1px solid var(--line-strong);
}

.page-faq .faq-step__toggle::before,
.page-faq .faq-step__toggle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: var(--peat-soft);
}

.page-faq .faq-step__toggle::before {
  width: 10px;
  height: 1.5px;
}

.page-faq .faq-step__toggle::after {
  width: 1.5px;
  height: 10px;
  transition: opacity .18s var(--ease);
}

.page-faq .faq-step__box[open] .faq-step__toggle::after {
  opacity: 0;
}

.page-faq .faq-step__body {
  padding: 0 16px 16px;
}

.page-faq .faq-step__body p {
  font-size: 15px;
  color: var(--peat-soft);
}

.page-faq .faq-step__body .faq-step__check {
  margin-top: 10px;
  padding-left: 12px;
  border-left: 2px solid var(--ice);
  font-size: 14px;
}

.page-faq .faq-step__check-label {
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ice-deep);
}

.page-faq .faq-step__body .faq-shot {
  margin-top: 12px;
  padding: 10px 12px;
  border: 1px dashed var(--faq-shot-line);
  background: repeating-linear-gradient(135deg, rgba(138, 154, 139, .12) 0 6px, transparent 6px 12px);
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(43, 33, 27, .62);
}

@media (min-width: 1000px) {
  .page-faq .faq-steps__layout {
    display: grid;
    grid-template-columns: 104px minmax(0, 1fr);
    gap: clamp(20px, 4vw, 48px);
    align-items: start;
  }

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

  .page-faq .faq-rail__inner {
    position: sticky;
    top: 92px;
  }

  .page-faq .faq-rail__list {
    display: grid;
    gap: 6px;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .page-faq .faq-rail__link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 3px 0;
    font-family: var(--font-mono);
    font-size: 12px;
    color: rgba(43, 33, 27, .55);
    text-decoration: none;
  }

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

  .page-faq .faq-rail__bar {
    display: block;
    width: 16px;
    height: 2px;
    background: var(--frost);
    transition: width .2s var(--ease), background-color .2s var(--ease);
  }

  .page-faq .faq-rail__link.is-active,
  .page-faq .faq-rail__link[aria-current="true"] {
    color: var(--peat);
  }

  .page-faq .faq-rail__link.is-active .faq-rail__bar,
  .page-faq .faq-rail__link[aria-current="true"] .faq-rail__bar {
    width: 30px;
    background: var(--lava);
  }
}

/* 常见原因 */
.page-faq .faq-causes {
  padding-block: clamp(30px, 5vw, 58px);
  background: var(--bone);
}

.page-faq .faq-causes__head {
  margin-bottom: 18px;
}

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

.page-faq .faq-causes__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 2px 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-causes__num {
  grid-row: span 2;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--lava);
}

.page-faq .faq-causes__item h3 {
  font-size: 16px;
}

.page-faq .faq-causes__item p {
  font-size: 14.5px;
  color: var(--peat-soft);
}

@media (min-width: 860px) {
  .page-faq .faq-causes__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 4vw, 56px);
  }
}

/* 对照表检查面板 */
.page-faq .faq-table-check {
  padding-block: clamp(30px, 5vw, 58px);
  background: var(--bone);
}

.page-faq .faq-panel {
  padding: clamp(22px, 4vw, 40px);
  background: var(--peat);
  color: var(--bone);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-faq .faq-panel__lead {
  margin-top: 12px;
  max-width: 56em;
  font-size: 15px;
  color: rgba(243, 239, 230, .82);
}

.page-faq .faq-panel__list {
  display: grid;
  gap: 14px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-panel__item {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  padding-top: 12px;
  border-top: 1px solid rgba(243, 239, 230, .18);
}

.page-faq .faq-panel__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ice-pale);
}

.page-faq .faq-panel__item h3 {
  font-size: 15.5px;
  color: var(--bone);
}

.page-faq .faq-panel__item p {
  margin-top: 4px;
  font-size: 14px;
  color: rgba(243, 239, 230, .76);
}

.page-faq .faq-btn {
  display: inline-block;
  margin-top: 24px;
  padding: 11px 20px;
  background: var(--ice);
  color: var(--night);
  font-family: var(--font-mono);
  font-size: 13px;
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  transition: background-color .18s var(--ease);
}

.page-faq .faq-btn:hover {
  background: var(--ice-pale);
}

@media (min-width: 780px) {
  .page-faq .faq-panel__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 32px;
  }
}

/* 入口对照清单 */
.page-faq .faq-map {
  padding-block: clamp(30px, 5vw, 58px);
  background: #ece7dc;
  border-block: 1px solid var(--line);
}

.page-faq .faq-map__head {
  margin-bottom: 18px;
}

.page-faq .faq-map__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-strong);
}

.page-faq .faq-map__row {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 6px 10px;
  align-items: start;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-check {
  display: inline-flex;
  align-items: center;
  padding-top: 4px;
}

.page-faq .faq-check__input {
  appearance: none;
  -webkit-appearance: none;
  display: grid;
  place-items: center;
  width: 16px;
  height: 16px;
  margin: 0;
  border: 1px solid var(--line-strong);
  background: #fff;
  cursor: pointer;
}

.page-faq .faq-check__input:checked {
  background: var(--ice);
  border-color: var(--ice-deep);
}

.page-faq .faq-check__input:checked::after {
  content: "";
  width: 8px;
  height: 4px;
  border-left: 2px solid var(--night);
  border-bottom: 2px solid var(--night);
  transform: rotate(-45deg) translate(1px, -2px);
}

.page-faq .faq-map__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--ice-deep);
}

.page-faq .faq-map__old {
  font-size: 14.5px;
  color: var(--peat-soft);
}

.page-faq .faq-map__new {
  font-size: 14.5px;
  color: var(--peat);
}

.page-faq .faq-map__new a,
.page-faq .faq-map__note a {
  color: var(--ice-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(27, 111, 158, .4);
}

.page-faq .faq-map__new a:hover,
.page-faq .faq-map__note a:hover {
  border-bottom-color: var(--ice-deep);
}

.page-faq .faq-map__note {
  margin-top: 16px;
  font-size: 13.5px;
  color: var(--peat-soft);
}

@media (min-width: 820px) {
  .page-faq .faq-map__row {
    grid-template-columns: 24px 96px minmax(0, 1fr) minmax(0, 1.15fr);
    align-items: center;
    gap: 0 16px;
  }

  .page-faq .faq-check {
    padding-top: 0;
  }
}

/* 联系支持 */
.page-faq .faq-support {
  padding-block: clamp(30px, 5vw, 60px);
  background: var(--bone);
}

.page-faq .faq-support__grid {
  display: grid;
  gap: 24px;
}

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

.page-faq .faq-support__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line-strong);
}

.page-faq .faq-support__figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  color: rgba(43, 33, 27, .68);
}

.page-faq .faq-support__card {
  padding: clamp(20px, 3.4vw, 34px);
  background: var(--peat-soft);
  color: var(--bone);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-faq .faq-support__prep {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-support__prep li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  padding-top: 10px;
  border-top: 1px solid rgba(243, 239, 230, .16);
  font-size: 14.5px;
  color: rgba(243, 239, 230, .86);
}

.page-faq .faq-support__prep span {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ice-pale);
}

.page-faq .faq-support__contact {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
}

.page-faq .faq-support__contact dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ice-pale);
}

.page-faq .faq-support__contact dd {
  margin: 2px 0 0;
  font-size: 16px;
  color: var(--bone);
}

.page-faq .faq-support__contact a {
  color: var(--bone);
  text-decoration: none;
  border-bottom: 1px solid rgba(243, 239, 230, .4);
}

.page-faq .faq-support__contact a:hover {
  border-bottom-color: var(--bone);
}

.page-faq .faq-support__note {
  margin-top: 18px;
  font-size: 13.5px;
  color: rgba(243, 239, 230, .72);
}

.page-faq .faq-support__note a {
  color: var(--ice-pale);
}

@media (min-width: 940px) {
  .page-faq .faq-support__grid {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    gap: clamp(24px, 4vw, 48px);
    align-items: start;
  }
}

/* 其他入口 */
.page-faq .faq-more {
  padding-block: clamp(26px, 4vw, 46px);
  background: #eae5da;
  border-top: 1px solid var(--line-strong);
}

.page-faq .faq-more__grid {
  display: grid;
  gap: 18px;
}

.page-faq .faq-more__item h3 {
  margin-bottom: 6px;
  font-size: 16px;
}

.page-faq .faq-more__item p {
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--peat-soft);
}

.page-faq .faq-more__item a {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ice-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(27, 111, 158, .4);
}

.page-faq .faq-more__item a:hover {
  border-bottom-color: var(--ice-deep);
}

@media (min-width: 800px) {
  .page-faq .faq-more__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }
}