.page-faq {
  --faq-ease: cubic-bezier(.22, .68, .28, 1);
  --faq-rule: rgba(245, 247, 250, .12);
  --faq-soft: rgba(245, 247, 250, .74);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-top: max(clamp(112px, 15vw, 168px), var(--header-h));
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 77, 46, .10), rgba(255, 77, 46, 0) 58%);
  pointer-events: none;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -18%;
  top: -8%;
  width: min(62vw, 640px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 77, 46, .18), rgba(255, 77, 46, 0) 70%);
  pointer-events: none;
}
.page-faq .faq-hero > .wrap {
  position: relative;
  z-index: 1;
}

.page-faq .faq-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: var(--ash);
  margin-bottom: clamp(26px, 5vw, 48px);
}
.page-faq .faq-crumbs a {
  color: var(--ash);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color .16s var(--faq-ease), border-color .16s var(--faq-ease);
}
.page-faq .faq-crumbs a:hover,
.page-faq .faq-crumbs a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--flare);
}
.page-faq .faq-crumbs .sep {
  color: rgba(138, 148, 166, .55);
}

.page-faq .faq-h1 {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(32px, 6.4vw, 68px);
  line-height: 1.08;
  letter-spacing: -.02em;
  margin: 14px 0 clamp(16px, 3vw, 26px);
  max-width: 760px;
}
.page-faq .faq-h1 em {
  font-style: normal;
  color: var(--flare);
}

.page-faq .faq-lead {
  max-width: 62ch;
}

.page-faq .faq-hero-stats {
  list-style: none;
  margin: clamp(30px, 5vw, 54px) 0 0;
  padding: clamp(20px, 3vw, 28px) 0 0;
  border-top: 1px solid var(--faq-rule);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}
@media (min-width: 640px) {
  .page-faq .faq-hero-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(20px, 4vw, 48px);
  }
}
.page-faq .faq-stat-num {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(19px, 2.4vw, 26px);
  letter-spacing: .02em;
  color: var(--white);
}
.page-faq .faq-stat-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--ash);
}

/* ---------- 问答板 ---------- */
.page-faq .faq-board {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 46px);
}
@media (min-width: 1000px) {
  .page-faq .faq-board {
    grid-template-columns: 258px minmax(0, 1fr);
    gap: clamp(44px, 6vw, 80px);
  }
}

.page-faq .faq-toc {
  padding-top: 18px;
  border-top: 2px solid var(--flare);
}
@media (min-width: 1000px) {
  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--header-h) + 20px);
    align-self: start;
  }
}
.page-faq .faq-toc-title {
  margin: 0 0 14px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--ash);
}
.page-faq .faq-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-faq .faq-toc-list li {
  border-bottom: 1px solid var(--faq-rule);
}
.page-faq .faq-toc-link {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 15px 4px;
  color: var(--white);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.45;
  transition: transform .16s var(--faq-ease), color .16s var(--faq-ease);
}
.page-faq .faq-toc-link:hover,
.page-faq .faq-toc-link:focus-visible {
  transform: translateX(4px);
  color: var(--flare);
}
.page-faq .faq-toc-link .num {
  font-size: 11px;
  color: var(--ash);
  transition: color .16s var(--faq-ease);
}
.page-faq .faq-toc-link:hover .num,
.page-faq .faq-toc-link:focus-visible .num {
  color: var(--flare);
}

.page-faq .faq-answers {
  display: flex;
  flex-direction: column;
  gap: clamp(46px, 6vw, 74px);
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 28px);
}
.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-strong);
}
.page-faq .faq-group-idx {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--flare);
}
.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(19px, 2.4vw, 26px);
  line-height: 1.3;
}
.page-faq .faq-group-sub {
  margin: 12px 0 4px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ash);
  max-width: 60ch;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-rule);
}
.page-faq .faq-q {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 16px;
  gap: 12px;
  align-items: start;
  width: 100%;
  margin: 0;
  padding: 18px 6px 18px 0;
  background: none;
  border: 0;
  color: var(--white);
  font-family: inherit;
  font-size: 15px;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
  transition: transform .16s var(--faq-ease), color .16s var(--faq-ease);
}
.page-faq .faq-q:hover,
.page-faq .faq-q:focus-visible {
  color: var(--flare);
  transform: translateX(4px);
}
.page-faq .faq-q .num {
  font-size: 11px;
  color: var(--ash);
  padding-top: 4px;
  transition: color .16s var(--faq-ease);
}
.page-faq .faq-q:hover .num,
.page-faq .faq-q:focus-visible .num {
  color: var(--pulse);
}
.page-faq .faq-caret {
  width: 8px;
  height: 8px;
  margin-top: 7px;
  border-right: 1.5px solid var(--pulse);
  border-bottom: 1.5px solid var(--pulse);
  transform: rotate(45deg);
  transition: transform .2s var(--faq-ease), border-color .2s var(--faq-ease);
}
.page-faq .faq-q[aria-expanded="false"] .faq-caret {
  transform: rotate(-45deg);
  border-color: var(--ash);
}

.page-faq .faq-a {
  padding: 0 6px 24px clamp(14px, 5vw, 46px);
  max-width: 68ch;
  color: var(--faq-soft);
  font-size: 14px;
  line-height: 1.85;
}
.page-faq .faq-a p {
  margin: 0 0 10px;
}
.page-faq .faq-a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.page-faq .faq-steps li {
  position: relative;
  padding-left: 26px;
  counter-increment: faqstep;
}
.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 4px;
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: .04em;
  color: var(--pulse);
}

/* ---------- 排查流程带 ---------- */
.page-faq .faq-flow .section-head {
  margin-bottom: clamp(32px, 5vw, 52px);
}
.page-faq .faq-flow-track {
  list-style: none;
  margin: 0 0 clamp(36px, 5vw, 56px);
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
@media (min-width: 860px) {
  .page-faq .faq-flow-track {
    flex-direction: row;
    align-items: stretch;
  }
}
.page-faq .faq-flow-node {
  flex: 1 1 0;
  min-width: 0;
  padding: 20px 18px 18px;
  background: rgba(8, 19, 31, .55);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .16s var(--faq-ease), transform .16s var(--faq-ease);
}
.page-faq .faq-flow-node:hover {
  border-color: var(--flare);
  transform: translateY(-2px);
}
.page-faq .faq-flow-idx {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--flare);
}
.page-faq .faq-flow-node h3 {
  margin: 8px 0 8px;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.4;
}
.page-faq .faq-flow-node p {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ash);
}
.page-faq .faq-flow-link {
  font-size: 13px;
  color: var(--pulse);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .16s var(--faq-ease), color .16s var(--faq-ease);
}
.page-faq .faq-flow-link:hover,
.page-faq .faq-flow-link:focus-visible {
  border-bottom-color: var(--pulse);
}
.page-faq .faq-flow-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px 0;
}
.page-faq .faq-flow-arrow svg {
  transform: rotate(90deg);
}
@media (min-width: 860px) {
  .page-faq .faq-flow-arrow {
    padding: 0 8px;
  }
  .page-faq .faq-flow-arrow svg {
    transform: none;
  }
}

.page-faq .figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}
.page-faq .faq-flow-figure {
  margin: 0;
}

/* ---------- 人工协助 ---------- */
.page-faq .faq-help-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 56px);
  align-items: center;
}
@media (min-width: 900px) {
  .page-faq .faq-help-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }
}
.page-faq .faq-help-copy h2 {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.25;
  margin: 14px 0 16px;
  max-width: 18em;
}
.page-faq .faq-help-text {
  margin: 0;
  color: var(--faq-soft);
  font-size: 15px;
  line-height: 1.8;
  max-width: 56ch;
}
.page-faq .faq-checklist {
  list-style: none;
  margin: clamp(20px, 3vw, 28px) 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--faq-rule);
  border: 1px solid var(--faq-rule);
}
.page-faq .faq-checklist li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 14px 16px;
  background: var(--panel);
  font-size: 14px;
  line-height: 1.65;
  color: var(--faq-soft);
}
.page-faq .faq-checklist .mono {
  font-size: 11px;
  color: var(--flare);
}
.page-faq .faq-channels {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}
.page-faq .faq-help-note {
  max-width: 56ch;
  line-height: 1.8;
}
.page-faq .faq-help-figure {
  margin: 0;
}

/* ---------- 页尾索引带 ---------- */
.page-faq .faq-more-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--faq-rule);
  border: 1px solid var(--faq-rule);
}
@media (min-width: 700px) {
  .page-faq .faq-more-band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1040px) {
  .page-faq .faq-more-band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
.page-faq .faq-more-band a {
  display: block;
  padding: 22px 18px 24px;
  background: var(--ink);
  color: var(--white);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.65;
  transition: background .16s var(--faq-ease), color .16s var(--faq-ease);
}
.page-faq .faq-more-band a:hover,
.page-faq .faq-more-band a:focus-visible {
  background: var(--panel);
  color: var(--flare);
}
.page-faq .faq-more-band .num {
  display: block;
  margin-bottom: 10px;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--ash);
}
.page-faq .faq-more-band a:hover .num {
  color: var(--pulse);
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc-link,
  .page-faq .faq-q,
  .page-faq .faq-caret,
  .page-faq .faq-flow-node,
  .page-faq .faq-flow-link,
  .page-faq .faq-more-band a {
    transition: none;
  }
  .page-faq .faq-toc-link:hover,
  .page-faq .faq-q:hover {
    transform: none;
  }
  .page-faq .faq-flow-node:hover {
    transform: none;
  }
}