/* ================= 问题排查 / 页面专属样式 ================= */

.page-faq {
  --faq-line: rgba(27, 45, 63, .22);
  --faq-soft: rgba(255, 255, 255, .22);
}

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

/* ---------- 页头 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 56px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 46%;
  height: 168px;
  background: var(--coral);
  opacity: .16;
  clip-path: polygon(24% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: 34px;
}

.page-faq .faq-hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 22px 0 0;
}

.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(2.05rem, 7.2vw, 3.4rem);
  line-height: 1.16;
  letter-spacing: .01em;
  color: var(--ink);
}

.page-faq .faq-hero__text {
  margin: 18px 0 0;
  max-width: 36em;
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
}

.page-faq .faq-hero__figure img {
  width: 100%;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  border: var(--edge);
  background: linear-gradient(135deg, var(--sea) 0%, #1c5686 100%);
}

.page-faq .faq-hero__figure .figcap {
  margin-top: 10px;
}

@media (min-width: 641px) {
  .page-faq .faq-hero__figure::before {
    content: "";
    position: absolute;
    right: -14px;
    bottom: 44px;
    width: 84px;
    height: 84px;
    background: var(--coral);
    opacity: .85;
    pointer-events: none;
  }
}

@media (min-width: 961px) {
  .page-faq .faq-hero {
    padding: 44px 0 84px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    align-items: start;
    gap: 52px;
  }

  .page-faq .faq-hero__figure {
    margin-top: var(--offset-a);
    margin-left: -48px;
  }
}

/* ---------- 分区标题 ---------- */

.page-faq .faq-sechead {
  margin-bottom: 26px;
}

.page-faq .faq-sechead h2 {
  margin: 10px 0 0;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(1.6rem, 4.6vw, 2.3rem);
  line-height: 1.25;
  color: var(--ink);
}

.page-faq .faq-sechead__note {
  margin: 10px 0 0;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 分类筛选 ---------- */

.page-faq .faq-hub {
  padding: 20px 0 8px;
}

.page-faq .faq-browser {
  position: relative;
}

.page-faq .faq-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-faq .faq-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 60px;
}

.page-faq .faq-tab {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 52px;
  padding: 10px 12px;
  border: var(--edge);
  background: var(--pearl);
  color: var(--ink);
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease),
              border-color .18s var(--ease), transform .18s var(--ease);
}

.page-faq .faq-tab:hover {
  transform: translateY(-2px);
  border-color: var(--ink);
}

.page-faq .faq-tab__num {
  flex: none;
  padding: 2px 7px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: .06em;
  color: inherit;
  opacity: .62;
}

.page-faq .faq-tab__name {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  color: inherit;
}

.page-faq #faq-cat-all:checked ~ .faq-tabs .faq-tab[for="faq-cat-all"],
.page-faq #faq-cat-access:checked ~ .faq-tabs .faq-tab[for="faq-cat-access"],
.page-faq #faq-cat-version:checked ~ .faq-tabs .faq-tab[for="faq-cat-version"],
.page-faq #faq-cat-activity:checked ~ .faq-tabs .faq-tab[for="faq-cat-activity"],
.page-faq #faq-cat-batch:checked ~ .faq-tabs .faq-tab[for="faq-cat-batch"],
.page-faq #faq-cat-ticket:checked ~ .faq-tabs .faq-tab[for="faq-cat-ticket"],
.page-faq #faq-cat-privacy:checked ~ .faq-tabs .faq-tab[for="faq-cat-privacy"] {
  background: var(--coral-deep);
  border-color: var(--coral-deep);
  color: var(--pearl);
}

.page-faq .faq-radio:focus-visible ~ .faq-tabs {
  outline: 2px solid var(--coral-deep);
  outline-offset: 6px;
}

@media (min-width: 641px) {
  .page-faq .faq-tabs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 高频问题手风琴 ---------- */

.page-faq .faq-sechead--sub {
  padding-top: 4px;
}

.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  background: var(--pearl);
  border: var(--edge);
  border-left: 2px solid var(--faq-line);
  transition: border-left-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .faq-item[open] {
  border-left-color: var(--coral-deep);
  box-shadow: var(--shadow-card);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 18px 18px 20px;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__title {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__sign {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--coral-deep);
  transition: transform .22s var(--ease), opacity .22s var(--ease);
}

.page-faq .faq-item__sign::before {
  top: 7px;
  left: 0;
  width: 16px;
  height: 2px;
}

.page-faq .faq-item__sign::after {
  top: 0;
  left: 7px;
  width: 2px;
  height: 16px;
}

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

.page-faq .faq-item__a {
  padding: 0 20px 20px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--slate);
  animation: faq-fade .25s var(--ease);
}

.page-faq .faq-item__a p {
  margin: 0;
}

.page-faq .faq-item__a a {
  color: var(--coral-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@keyframes faq-fade {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
}

.page-faq #faq-cat-access:checked ~ .faq-list .faq-item:not([data-cat="access"]),
.page-faq #faq-cat-version:checked ~ .faq-list .faq-item:not([data-cat="version"]),
.page-faq #faq-cat-activity:checked ~ .faq-list .faq-item:not([data-cat="activity"]),
.page-faq #faq-cat-batch:checked ~ .faq-list .faq-item:not([data-cat="batch"]),
.page-faq #faq-cat-ticket:checked ~ .faq-list .faq-item:not([data-cat="ticket"]),
.page-faq #faq-cat-privacy:checked ~ .faq-list .faq-item:not([data-cat="privacy"]) {
  display: none;
}

/* ---------- 三步流程 ---------- */

.page-faq .faq-steps {
  position: relative;
  overflow: hidden;
  margin-top: 76px;
  padding: 62px 0 72px;
  background: var(--card);
  border-top: var(--edge);
  border-bottom: var(--edge);
}

.page-faq .faq-steps__visual {
  position: absolute;
  inset: 0;
  opacity: .14;
  pointer-events: none;
}

.page-faq .faq-steps__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .faq-steps__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-steps__list {
  display: grid;
  gap: 26px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  column-gap: 16px;
  row-gap: 6px;
  align-items: start;
}

.page-faq .faq-step__num {
  grid-row: 1 / span 2;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--mist);
  color: var(--sea);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
}

.page-faq .faq-step__title {
  margin: 6px 0 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

@media (min-width: 861px) {
  .page-faq .faq-steps__list {
    position: relative;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }

  .page-faq .faq-steps__list::before {
    content: "";
    position: absolute;
    top: 24px;
    left: 24px;
    right: 24px;
    height: 1px;
    background: repeating-linear-gradient(90deg, var(--line) 0 6px, transparent 6px 14px);
    opacity: .3;
    pointer-events: none;
  }

  .page-faq .faq-step {
    display: block;
    padding-right: 32px;
  }

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

  .page-faq .faq-step__title {
    margin-top: 0;
  }
}

/* ---------- 自助排查清单 ---------- */

.page-faq .faq-checks {
  padding: 72px 0 24px;
}

.page-faq .faq-checks__inner {
  display: grid;
  gap: 30px;
}

@media (min-width: 961px) {
  .page-faq .faq-checks__inner {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-checks .faq-sechead {
    margin-bottom: 0;
  }
}

.page-faq .faq-checklist {
  counter-reset: faq-done;
}

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

.page-faq .faq-check {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  background: var(--pearl);
  border: var(--edge);
  transition: border-color .2s var(--ease);
}

.page-faq .faq-check:hover {
  border-color: var(--ink);
}

.page-faq .faq-check__box {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  margin: 2px 0 0;
  border: var(--edge);
  background: var(--pearl);
  cursor: pointer;
  transition: background-color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-check__box:checked {
  counter-increment: faq-done;
  background: var(--jade);
  border-color: var(--jade);
}

.page-faq .faq-check__box:checked::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 3px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--pearl);
  border-bottom: 2px solid var(--pearl);
  transform: rotate(45deg);
}

.page-faq .faq-check__label {
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--slate);
  cursor: pointer;
}

.page-faq .faq-check__label strong {
  color: var(--ink);
}

.page-faq .faq-checklist__progress {
  margin: 18px 0 0;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--slate);
}

.page-faq .faq-checklist__count {
  color: var(--coral-deep);
  font-weight: 700;
}

.page-faq .faq-checklist__count::after {
  content: counter(faq-done);
}

/* ---------- 人工帮助条 ---------- */

.page-faq .faq-help {
  margin-top: 72px;
  padding: 62px 0 72px;
  background: var(--sea);
  color: var(--pearl);
}

.page-faq .faq-help__inner {
  display: grid;
  gap: 38px;
}

.page-faq .faq-help__eyebrow {
  color: var(--mist);
  border-color: rgba(255, 255, 255, .35);
}

.page-faq .faq-help h2 {
  margin: 12px 0 0;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(1.7rem, 4.8vw, 2.4rem);
  line-height: 1.25;
  color: var(--pearl);
}

.page-faq .faq-help__text {
  margin: 14px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-help__channels {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--faq-soft);
}

.page-faq .faq-channel {
  padding: 22px 0;
  border-bottom: 1px solid var(--faq-soft);
}

.page-faq .faq-channel__key {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: rgba(214, 225, 234, .78);
}

.page-faq .faq-channel__val {
  margin: 10px 0 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--pearl);
  word-break: break-word;
}

.page-faq .faq-channel__desc {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-channel .copy-btn {
  margin-top: 14px;
  padding: 7px 14px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--pearl);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, .5);
  cursor: pointer;
  transition: background-color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-channel .copy-btn:hover {
  background: rgba(255, 255, 255, .12);
  border-color: var(--pearl);
}

.page-faq .faq-channel .copy-btn.is-copied {
  background: var(--jade);
  border-color: var(--jade);
}

.page-faq .faq-help__more {
  margin: 30px 0 0;
}

@media (min-width: 721px) {
  .page-faq .faq-help__channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: 32px;
  }

  .page-faq .faq-channel {
    padding: 24px 0 6px;
    border-bottom: 0;
  }
}

@media (min-width: 961px) {
  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
    gap: 60px;
    align-items: start;
  }

  .page-faq .faq-help__more {
    grid-column: 2;
  }
}

/* ---------- 减少动效 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tab,
  .page-faq .faq-item,
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after,
  .page-faq .faq-check,
  .page-faq .faq-check__box,
  .page-faq .faq-channel .copy-btn {
    transition: none;
  }

  .page-faq .faq-item__a {
    animation: none;
  }

  .page-faq .faq-tab:hover {
    transform: none;
  }
}