.page-faq {
  --faq-pad: clamp(52px, 8vw, 96px);
  --faq-gap: clamp(20px, 3.4vw, 34px);
  background: var(--yh-linen-050);
  color: var(--yh-black-900);
  font-family: var(--yh-font-sans);
  overflow-x: hidden;
}

.page-faq .faq-crumb {
  padding-top: 18px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 4vw, 46px) 0 clamp(44px, 7vw, 82px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 8%;
  right: -12%;
  width: min(520px, 62vw);
  height: min(520px, 62vw);
  background: linear-gradient(140deg, rgba(18, 196, 188, 0.16), rgba(18, 196, 188, 0));
  border-radius: 48% 52% 40% 60% / 55% 45% 55% 45%;
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero .yh-container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

.page-faq .faq-hero__title {
  font-size: clamp(29px, 6vw, 54px);
  font-weight: 300;
  line-height: 1.16;
  letter-spacing: -0.012em;
  margin: 14px 0 20px;
  max-width: 17em;
}

.page-faq .faq-hero__desc {
  margin: 0 0 26px;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(15, 21, 18, 0.82);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 0;
}

.page-faq .faq-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1 1 32%;
  min-width: 104px;
  padding: 0 16px 0 0;
  border-left: 2px solid var(--yh-amber-500);
  padding-left: 12px;
}

.page-faq .faq-hero__fact-num {
  font-family: var(--yh-font-mono);
  font-size: 24px;
  line-height: 1.1;
  color: var(--yh-ink-900);
}

.page-faq .faq-hero__fact-txt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(15, 21, 18, 0.62);
}

.page-faq .faq-hero__panel {
  background: var(--yh-amber-500);
  color: var(--yh-black-900);
  border-radius: var(--yh-radius-organic);
  padding: 22px clamp(18px, 3vw, 28px) 10px;
}

.page-faq .faq-hero__panel-title {
  margin: 0 0 8px;
  font-family: var(--yh-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(15, 21, 18, 0.7);
}

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

.page-faq .faq-nav__item {
  border-bottom: 1px solid rgba(15, 21, 18, 0.18);
}

.page-faq .faq-nav__item:last-child {
  border-bottom: 0;
}

.page-faq .faq-nav__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 13px 0;
  color: inherit;
  text-decoration: none;
  font-size: 15px;
  line-height: 1.5;
  transition: transform var(--yh-dur) var(--yh-ease), opacity var(--yh-dur) var(--yh-ease);
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  transform: translateX(4px);
  opacity: 0.78;
}

.page-faq .faq-nav__num {
  font-family: var(--yh-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(15, 21, 18, 0.62);
}

/* ---------- 区块标题 ---------- */
.page-faq .faq-head {
  max-width: 640px;
  margin-bottom: clamp(24px, 3.6vw, 40px);
}

.page-faq .faq-head--tight {
  margin-bottom: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-head__title {
  font-size: clamp(23px, 3.4vw, 34px);
  font-weight: 300;
  line-height: 1.32;
  letter-spacing: -0.008em;
  margin: 10px 0 12px;
}

.page-faq .faq-head__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(15, 21, 18, 0.72);
}

/* ---------- 三步上手 ---------- */
.page-faq .faq-steps {
  background: var(--yh-ink-900);
  color: var(--yh-linen-050);
  padding: var(--faq-pad) 0;
}

.page-faq .faq-steps .yh-eyebrow {
  color: var(--yh-cyan-400);
}

.page-faq .faq-steps .faq-head__title {
  color: var(--yh-linen-050);
}

.page-faq .faq-steps .faq-head__desc {
  color: var(--yh-mist-400);
}

.page-faq .faq-figure {
  margin: 0 0 clamp(26px, 4vw, 40px);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--yh-radius-organic);
  background: var(--yh-ink-700);
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-family: var(--yh-font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--yh-mist-400);
}

.page-faq .faq-tabs__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-tabs__tab {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 100%;
  text-align: left;
  padding: 15px 18px 17px;
  font-family: inherit;
  color: var(--yh-linen-050);
  background: transparent;
  border: 1px solid var(--yh-line-invert);
  border-radius: var(--yh-radius-soft);
  cursor: pointer;
  transition: background var(--yh-dur) var(--yh-ease), border-color var(--yh-dur) var(--yh-ease), color var(--yh-dur) var(--yh-ease);
}

.page-faq .faq-tabs__tab:hover {
  border-color: var(--yh-amber-300);
}

.page-faq .faq-tabs__tab:focus-visible {
  outline: 2px solid var(--yh-amber-300);
  outline-offset: 3px;
}

.page-faq .faq-tabs__tab[aria-selected="true"] {
  background: var(--yh-amber-500);
  border-color: var(--yh-amber-500);
  color: var(--yh-black-900);
}

.page-faq .faq-tabs__num {
  font-family: var(--yh-font-mono);
  font-size: 26px;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--yh-amber-500);
  transition: color var(--yh-dur) var(--yh-ease);
}

.page-faq .faq-tabs__tab[aria-selected="true"] .faq-tabs__num {
  color: var(--yh-black-900);
}

.page-faq .faq-tabs__name {
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.page-faq .faq-tabs__time {
  font-family: var(--yh-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  opacity: 0.7;
}

.page-faq .faq-tabs__panel {
  background: var(--yh-ink-700);
  border-radius: var(--yh-radius-organic);
  padding: clamp(20px, 3vw, 32px);
}

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

.page-faq .faq-tabs__panel:focus-visible {
  outline: 2px solid var(--yh-amber-300);
  outline-offset: 3px;
}

.page-faq .faq-tabs__panel-title {
  margin: 0 0 16px;
  font-size: 19px;
  font-weight: 400;
  color: var(--yh-linen-050);
}

/* ---------- 要点列表 ---------- */
.page-faq .faq-check {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-faq .faq-check li {
  position: relative;
  padding-left: 24px;
  font-size: 15.5px;
  line-height: 1.78;
}

.page-faq .faq-check li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--yh-cyan-400);
}

.page-faq .faq-check li strong {
  font-weight: 600;
}

.page-faq .faq-steps .faq-check li {
  color: rgba(244, 239, 227, 0.86);
}

.page-faq .faq-inline-link {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: var(--yh-amber-500);
}

.page-faq .faq-inline-link:hover,
.page-faq .faq-inline-link:focus-visible {
  text-decoration-color: var(--yh-cyan-400);
}

.page-faq .faq-steps .faq-inline-link {
  color: var(--yh-cyan-400);
  text-decoration-color: rgba(18, 196, 188, 0.5);
}

/* ---------- 三处卡点 ---------- */
.page-faq .faq-detail {
  padding: var(--faq-pad) 0;
}

.page-faq .faq-acc {
  display: grid;
  gap: 12px;
  border-top: 1px solid var(--yh-line);
}

.page-faq .faq-acc__item {
  border-bottom: 1px solid var(--yh-line);
  border-radius: var(--yh-radius-soft);
  background: transparent;
  transition: background var(--yh-dur) var(--yh-ease);
}

.page-faq .faq-acc__item[open] {
  background: var(--yh-cyan-100);
  border-bottom-color: transparent;
}

.page-faq .faq-acc__summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 6px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-acc__summary:focus-visible {
  outline: 2px solid var(--yh-amber-500);
  outline-offset: -2px;
  border-radius: var(--yh-radius-soft);
}

.page-faq .faq-acc__idx {
  flex: none;
  font-family: var(--yh-font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--yh-ink-700);
  background: var(--yh-linen-100);
  border-radius: 4px;
  padding: 2px 6px;
}

.page-faq .faq-acc__item[open] .faq-acc__idx {
  background: var(--yh-ink-900);
  color: var(--yh-linen-050);
}

.page-faq .faq-acc__title {
  flex: 1 1 auto;
  font-size: clamp(16px, 2.2vw, 19px);
  font-weight: 500;
  line-height: 1.5;
}

.page-faq .faq-acc__sign {
  flex: none;
  position: relative;
  width: 14px;
  height: 14px;
  align-self: center;
}

.page-faq .faq-acc__sign::before,
.page-faq .faq-acc__sign::after {
  content: "";
  position: absolute;
  background: var(--yh-ink-900);
  border-radius: 1px;
  transition: transform var(--yh-dur) var(--yh-ease), opacity var(--yh-dur) var(--yh-ease);
}

.page-faq .faq-acc__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-acc__sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .faq-acc__item[open] .faq-acc__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-acc__body {
  padding: 0 6px 22px 50px;
}

.page-faq .faq-acc__body > p {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(15, 21, 18, 0.8);
}

.page-faq .faq-acc__note {
  margin: 14px 0 0;
  font-family: var(--yh-font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: rgba(15, 21, 18, 0.62);
}

.page-faq .faq-acc__body .faq-check li::before {
  background: var(--yh-ink-700);
}

/* ---------- 九类故障 ---------- */
.page-faq .faq-faults {
  background: var(--yh-linen-100);
  padding: var(--faq-pad) 0;
}

.page-faq .faq-faults__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.6vw, 44px);
}

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

.page-faq .faq-faults__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--yh-radius-organic);
  background: var(--yh-linen-050);
}

.page-faq .faq-faults__figure figcaption {
  margin-top: 10px;
  font-family: var(--yh-font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(15, 21, 18, 0.6);
}

.page-faq .faq-table__wrap {
  border-radius: var(--yh-radius-soft);
  overflow: hidden;
  border: 1px solid var(--yh-line);
  background: var(--yh-linen-050);
}

.page-faq .faq-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  line-height: 1.7;
}

.page-faq .faq-table thead th {
  text-align: left;
  padding: 12px 16px;
  font-family: var(--yh-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  font-weight: 400;
  color: var(--yh-linen-050);
  background: var(--yh-ink-700);
}

.page-faq .faq-table td {
  padding: 13px 16px;
  vertical-align: top;
  border-bottom: 1px solid var(--yh-line-soft);
}

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

.page-faq .faq-table tbody tr:nth-child(even) {
  background: rgba(231, 223, 203, 0.5);
}

.page-faq .faq-table td:first-child {
  color: var(--yh-black-900);
  font-weight: 500;
}

.page-faq .faq-table td:last-child {
  color: rgba(15, 21, 18, 0.78);
}

.page-faq .faq-table__cat {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 6px;
  font-family: var(--yh-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  font-weight: 400;
  color: var(--yh-ink-700);
  background: var(--yh-cyan-100);
  border-radius: 3px;
  vertical-align: 2px;
}

.page-faq .faq-faults__more {
  margin: 18px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(15, 21, 18, 0.75);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-help {
  background: var(--yh-ink-900);
  color: var(--yh-linen-050);
  padding: var(--faq-pad) 0;
}

.page-faq .faq-help__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
}

.page-faq .faq-help .yh-eyebrow {
  color: var(--yh-cyan-400);
}

.page-faq .faq-help__title {
  font-size: clamp(23px, 3.4vw, 36px);
  font-weight: 300;
  line-height: 1.32;
  margin: 10px 0 16px;
  max-width: 16em;
}

.page-faq .faq-help__lead p {
  margin: 0 0 24px;
  max-width: 32em;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(244, 239, 227, 0.8);
}

.page-faq .faq-help__btn {
  display: inline-block;
  text-decoration: none;
}

.page-faq .faq-help__side {
  border-top: 1px solid var(--yh-line-invert);
  padding-top: 24px;
}

.page-faq .faq-help__side-title {
  margin: 0 0 16px;
  font-family: var(--yh-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--yh-amber-300);
}

.page-faq .faq-check--ink li {
  color: rgba(244, 239, 227, 0.84);
}

.page-faq .faq-check--ink li::before {
  background: var(--yh-amber-500);
}

.page-faq .faq-help__note {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--yh-mist-400);
}

.page-faq .faq-help__note .faq-inline-link {
  color: var(--yh-cyan-400);
  text-decoration-color: rgba(18, 196, 188, 0.5);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-tabs__list {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-faults__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-faq .faq-help__side {
    border-top: 0;
    border-left: 1px solid var(--yh-line-invert);
    padding-top: 0;
    padding-left: clamp(24px, 3.4vw, 44px);
  }
}

@media (max-width: 620px) {
  .page-faq .faq-table,
  .page-faq .faq-table tbody,
  .page-faq .faq-table tr,
  .page-faq .faq-table td {
    display: block;
    width: 100%;
  }

  .page-faq .faq-table thead {
    display: none;
  }

  .page-faq .faq-table tbody tr {
    margin-bottom: 10px;
    border: 1px solid var(--yh-line);
    border-radius: var(--yh-radius-soft);
    overflow: hidden;
  }

  .page-faq .faq-table tbody tr:nth-child(even) {
    background: transparent;
  }

  .page-faq .faq-table td {
    border-bottom: 0;
  }

  .page-faq .faq-table td:first-child {
    background: rgba(231, 223, 203, 0.7);
    font-weight: 600;
  }

  .page-faq .faq-acc__body {
    padding-left: 18px;
  }

  .page-faq .faq-acc__summary {
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-nav__link,
  .page-faq .faq-tabs__tab,
  .page-faq .faq-tabs__num,
  .page-faq .faq-acc__item,
  .page-faq .faq-acc__sign::before,
  .page-faq .faq-acc__sign::after {
    transition: none;
  }

  .page-faq .faq-nav__link:hover,
  .page-faq .faq-nav__link:focus-visible {
    transform: none;
  }
}