.page-faq {
  --faq-line: var(--grid);
  --faq-gap: clamp(20px, 3vw, 32px);
  --faq-skew: 22px;
  background: var(--abyss);
  color: var(--bone);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(26px, 4.5vw, 48px) 0 clamp(28px, 4vw, 48px);
  border-bottom: 1px solid var(--faq-line);
  position: relative;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  width: clamp(48px, 14vw, 180px);
  height: 3px;
  background: var(--coral);
}

.page-faq .faq-hero .eyebrow {
  margin: 22px 0 16px;
}

.page-faq .faq-hero .display {
  margin: 0;
  max-width: 11em;
}

.page-faq .faq-lede {
  margin: clamp(20px, 2.6vw, 28px) 0 0;
  max-width: 52ch;
}

/* ---------- 现象索引 ---------- */
.page-faq .faq-index {
  background: var(--slate);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-index-list {
  display: flex;
  align-items: stretch;
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index-list li {
  flex: 0 0 auto;
}

.page-faq .faq-index-list a {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 15px clamp(14px, 2vw, 22px);
  color: var(--bone);
  text-decoration: none;
  font-size: 14px;
  line-height: 1;
  white-space: nowrap;
  border-right: 1px solid var(--faq-line);
  transition: background-color .18s ease, color .18s ease;
}

.page-faq .faq-index-list li:first-child a {
  border-left: 1px solid var(--faq-line);
}

.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  background: var(--abyss);
  color: var(--coral);
}

.page-faq .faq-index-num {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

/* ---------- 通用章节外壳 ---------- */
.page-faq .faq-section {
  padding-top: clamp(52px, 7.5vw, 104px);
}

.page-faq .faq-section .eyebrow {
  margin: 0 0 14px;
}

.page-faq .faq-section .section-title {
  margin: 0;
}

.page-faq .faq-section .prose {
  margin: 18px 0 0;
  max-width: 56ch;
}

/* ---------- 01 自检 ---------- */
.page-faq .faq-check {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  margin-bottom: var(--faq-gap);
}

.page-faq .faq-check-figure {
  margin: 0;
}

.page-faq .faq-check-figure img,
.page-faq .faq-legacy-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-step {
  position: relative;
  background: var(--abyss);
  padding: clamp(24px, 3vw, 34px) clamp(20px, 2.6vw, 28px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-step::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: var(--clay);
}

.page-faq .faq-step-num {
  font-size: clamp(24px, 2.4vw, 30px);
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .faq-step-title {
  margin: 0;
  font-size: clamp(17px, 1.6vw, 20px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--bone);
}

.page-faq .faq-step-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--bone);
  opacity: .83;
}

.page-faq .faq-step-state {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--faq-line);
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ash);
}

.page-faq .faq-dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  background: var(--ash);
}

.page-faq .faq-dot--moss {
  background: var(--moss);
}

.page-faq .faq-dot--ash {
  background: var(--ash);
}

/* ---------- 02-05 折叠排查 ---------- */
.page-faq .faq-block-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
}

.page-faq .faq-block-lede {
  margin: 16px 0 0;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--ash);
}

.page-faq .faq-accordion {
  border: 0;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-item {
  position: relative;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 3px;
  background: var(--clay);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .3s ease;
}

.page-faq .faq-item:has([aria-expanded="true"])::before,
.page-faq .faq-item[data-open]::before {
  transform: scaleY(1);
}

.page-faq .faq-trigger {
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(12px, 1.6vw, 20px);
  padding: 19px 8px 19px 20px;
  background: transparent;
  border: 0;
  color: var(--bone);
  font: inherit;
  font-size: clamp(15.5px, 1.5vw, 18px);
  font-weight: 700;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
  transition: color .18s ease, background-color .18s ease;
}

.page-faq .faq-trigger:hover,
.page-faq .faq-trigger:focus-visible {
  color: var(--coral);
  background: var(--slate);
}

.page-faq .faq-trigger-idx {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ash);
  transition: color .18s ease;
}

.page-faq .faq-trigger:hover .faq-trigger-idx,
.page-faq .faq-trigger:focus-visible .faq-trigger-idx {
  color: var(--coral);
}

.page-faq .faq-trigger-mark {
  font-family: var(--mono);
  font-size: 19px;
  line-height: 1;
  color: var(--cyan);
  transition: transform .28s ease;
}

.page-faq .faq-item:has([aria-expanded="true"]) .faq-trigger-mark {
  transform: rotate(45deg);
}

.page-faq .faq-panel {
  overflow: hidden;
}

.page-faq .faq-rows {
  display: grid;
  gap: 15px;
  padding: 2px 8px 26px 20px;
}

.page-faq .faq-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 5px;
}

.page-faq .faq-row-key {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 2;
  color: var(--clay);
}

.page-faq .faq-row--fallback .faq-row-key {
  color: var(--coral);
}

.page-faq .faq-row-val {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.84;
  color: var(--bone);
  opacity: .87;
}

.page-faq .faq-legacy-figure {
  margin: var(--faq-gap) 0 0;
}

/* ---------- 06 联系客服 ---------- */
.page-faq .faq-contact {
  margin-top: clamp(56px, 8vw, 112px);
  background: var(--bone);
  color: var(--abyss);
  clip-path: polygon(0 var(--faq-skew), 100% 0, 100% 100%, 0 100%);
  padding-top: calc(clamp(48px, 7vw, 88px) + var(--faq-skew));
  padding-bottom: clamp(48px, 7vw, 88px);
}

.page-faq .faq-contact .eyebrow {
  margin: 0 0 14px;
  color: var(--clay);
}

.page-faq .faq-contact .section-title {
  margin: 0;
  color: var(--abyss);
}

.page-faq .faq-contact-lede {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.86;
  color: var(--slate);
}

.page-faq .faq-contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
}

.page-faq .faq-ways {
  border-top: 1px solid rgba(16, 48, 74, .24);
}

.page-faq .faq-way {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 15px 0;
  border-bottom: 1px solid rgba(16, 48, 74, .24);
}

.page-faq .faq-way-key {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--clay);
  line-height: 2;
}

.page-faq .faq-way-val {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--abyss);
  word-break: break-word;
}

.page-faq .faq-contact-note {
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding-top: 20px;
  border-top: 1px solid rgba(16, 48, 74, .24);
  max-width: 72ch;
  font-size: 14px;
  line-height: 1.86;
  color: var(--slate);
}

.page-faq .faq-contact-note a {
  color: var(--abyss);
  text-decoration: none;
  border-bottom: 1px solid var(--coral);
}

.page-faq .faq-contact-note a:hover,
.page-faq .faq-contact-note a:focus-visible {
  color: var(--coral);
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-row {
    grid-template-columns: 74px minmax(0, 1fr);
    gap: 16px;
    align-items: start;
  }

  .page-faq .faq-way {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-check {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: end;
    gap: clamp(32px, 4.5vw, 64px);
  }

  .page-faq .faq-contact {
    --faq-skew: 44px;
  }

  .page-faq .faq-contact-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: clamp(36px, 5vw, 76px);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-block-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 80px);
    align-items: start;
  }

  .page-faq .faq-block-lede {
    max-width: 30ch;
  }

  .page-faq .faq-legacy-figure {
    max-width: 62%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item::before,
  .page-faq .faq-trigger,
  .page-faq .faq-trigger-idx,
  .page-faq .faq-trigger-mark,
  .page-faq .faq-index-list a {
    transition: none;
  }
}