.page-faq {
  --faq-line-active: var(--orange);
  --faq-line-device: var(--blue);
  --faq-panel-tint: rgba(110, 122, 117, .14);
}

/* ---------- 首屏：不对称排查索引 ---------- */
.page-faq .faq-hero {
  padding-block: clamp(1.75rem, 4.5vw, 3.25rem) clamp(2rem, 5vw, 3.5rem);
  position: relative;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 18%, var(--line-strong) 72%, transparent);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  grid-template-columns: 1fr;
  align-items: start;
}

.page-faq .faq-hero__title {
  margin: .5rem 0 1.1rem;
  max-width: 17ch;
}

.page-faq .faq-hero__lead .lede {
  margin: 0;
}

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

/* 胶囊分组索引 */
.page-faq .faq-jump {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
  gap: .55rem;
}

.page-faq .faq-chip {
  display: flex;
  align-items: center;
  gap: .55rem;
  padding: .58rem 1rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: var(--ink-2);
  color: var(--white);
  font-size: .86rem;
  line-height: 1.3;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--orange);
  background: rgba(255, 122, 26, .12);
  transform: translateY(-2px);
}

.page-faq .faq-chip__idx {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--orange);
  flex: none;
}

/* ---------- 登录排查区 ---------- */
.page-faq .faq-head {
  max-width: 62ch;
  margin-bottom: clamp(1.5rem, 3.5vw, 2.25rem);
}

.page-faq .faq-head .lede {
  margin: .65rem 0 0;
}

.page-faq .faq-groups {
  display: grid;
  grid-template-columns: 1fr;
  gap: .75rem;
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--ink-2);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .faq-item::before {
  content: "";
  display: block;
  height: 3px;
  background: var(--concrete);
}

.page-faq .faq-item--alert::before {
  background: var(--orange);
}

.page-faq .faq-item--device::before {
  background: var(--blue);
}

.page-faq .faq-item:hover {
  border-color: var(--line-strong);
}

.page-faq .faq-item[open] {
  border-color: rgba(123, 224, 168, .48);
}

.page-faq .faq-item > .fold__summary {
  display: flex;
  align-items: center;
  gap: .7rem;
  padding: .95rem 1.1rem;
  cursor: pointer;
  list-style: none;
  border-radius: inherit;
}

.page-faq .faq-item > .fold__summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > .fold__summary::after {
  content: "";
  flex: none;
  margin-left: .7rem;
  width: .52rem;
  height: .52rem;
  border-right: 2px solid var(--mist);
  border-bottom: 2px solid var(--mist);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-item[open] > .fold__summary::after {
  transform: rotate(-135deg);
  border-color: var(--green);
}

.page-faq .faq-item > .fold__summary:focus-visible {
  outline: 2px solid var(--green-line);
  outline-offset: -2px;
}

.page-faq .faq-item__idx {
  flex: none;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-faq .faq-item__name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.45;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item[open] > .fold__summary .faq-item__name {
  color: var(--green);
}

.page-faq .faq-item .tag {
  margin-left: auto;
  flex: none;
}

.page-faq .faq-item > .fold__body {
  padding: 0 1.1rem 1.15rem;
}

.page-faq .faq-item > .fold__body .prose {
  margin: 0;
  font-size: .95rem;
}

.page-faq .faq-item > .fold__body .prose a {
  color: var(--green-line);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 步骤条：纵向小圆点 */
.page-faq .faq-steps {
  list-style: none;
  margin: .25rem 0 0;
  padding: 0;
  display: grid;
  gap: .7rem;
}

.page-faq .faq-step {
  position: relative;
  padding-left: 1.6rem;
  font-size: .94rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: .3rem;
  top: .6rem;
  width: .5rem;
  height: .5rem;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--orange);
}

.page-faq .faq-item--device .faq-step::before {
  border-color: var(--blue);
}

.page-faq .faq-step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: .53rem;
  top: 1.28rem;
  bottom: -.72rem;
  width: 1px;
  background: var(--line-strong);
}

/* ---------- 平板显示区 ---------- */
.page-faq .faq-device__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}

.page-faq .faq-device__text .prose {
  margin: .8rem 0 0;
}

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

.page-faq .faq-checks {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  gap: .6rem;
}

.page-faq .faq-checks li {
  position: relative;
  padding-left: 1.5rem;
  font-size: .95rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .58rem;
  width: .68rem;
  height: .68rem;
  border-radius: 3px;
  background: rgba(79, 163, 255, .2);
  border: 1px solid var(--blue);
}

.page-faq .faq-device__link {
  margin: 1.5rem 0 0;
}

/* ---------- 窄栏问答区 ---------- */
.page-faq .faq-narrow__wrap {
  max-width: 74ch;
  display: grid;
  gap: .75rem;
}

.page-faq .faq-narrow__wrap > .eyebrow {
  margin: 0;
}

.page-faq .faq-narrow__wrap > .section-title {
  margin: 0 0 .9rem;
}

.page-faq .faq-item--plain::before {
  background: var(--green);
}

/* ---------- 联系客服区 ---------- */
.page-faq .faq-contact {
  padding-block: var(--section-y);
}

.page-faq .faq-contact__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.4rem, 4vw, 2.4rem);
  padding: clamp(1.4rem, 4vw, 2.6rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(47, 191, 113, .1), transparent 58%),
    linear-gradient(180deg, rgba(110, 122, 117, .18), rgba(110, 122, 117, .06));
}

.page-faq .faq-contact__intro .prose {
  margin: .8rem 0 0;
  font-size: .96rem;
}

.page-faq .faq-contact__intro .note {
  margin: 1rem 0 0;
}

.page-faq .faq-contact__actions {
  margin: 1.35rem 0 0;
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .75rem;
}

.page-faq .faq-contact__item {
  display: grid;
  gap: .28rem;
  padding: .95rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(14, 20, 18, .58);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-contact__item:hover {
  border-color: rgba(123, 224, 168, .55);
  transform: translateY(-2px);
}

.page-faq .faq-contact__key {
  font-size: .7rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-contact__val {
  font-family: var(--font-mono);
  font-size: .98rem;
  letter-spacing: .04em;
  color: var(--white);
  word-break: break-word;
}

.page-faq .faq-contact__hint {
  font-size: .84rem;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-device__grid {
    grid-template-columns: 7fr 5fr;
  }

  .page-faq .faq-contact__panel {
    grid-template-columns: 6fr 6fr;
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 7fr 5fr;
    align-items: end;
  }

  .page-faq .faq-narrow__wrap {
    max-width: 68ch;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chip,
  .page-faq .faq-item,
  .page-faq .faq-item__name,
  .page-faq .faq-contact__item,
  .page-faq .faq-item > .fold__summary::after {
    transition: none;
  }

  .page-faq .faq-chip:hover,
  .page-faq .faq-chip:focus-visible,
  .page-faq .faq-contact__item:hover {
    transform: none;
  }
}
</main>