.page-faq {
  position: relative;
  color: var(--snow);
}

.page-faq > .wrap:first-child {
  padding-top: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(30px, 6vw, 68px) 0 clamp(26px, 5vw, 52px);
  background:
    radial-gradient(105% 85% at 88% 0%, rgba(124, 92, 255, .30), transparent 62%),
    radial-gradient(85% 75% at 2% 22%, rgba(34, 211, 238, .13), transparent 65%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(143, 163, 200, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143, 163, 200, .06) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(75% 65% at 50% 32%, #000 0%, transparent 80%);
  mask-image: radial-gradient(75% 65% at 50% 32%, #000 0%, transparent 80%);
  pointer-events: none;
}

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

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  max-width: 880px;
  font-family: var(--font-heading);
  font-size: clamp(28px, 5.4vw, 46px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: .02em;
  color: var(--snow);
}

.page-faq .faq-hero .lead {
  max-width: 720px;
  margin-top: 16px;
  color: var(--mist);
  font-size: clamp(15px, 2.2vw, 17px);
  line-height: 1.75;
}

/* ---------- 分流图 ---------- */
.page-faq .faq-map {
  margin: clamp(22px, 4vw, 34px) 0 0;
  border: 2px solid var(--line-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(160deg, rgba(18, 42, 85, .9), rgba(6, 14, 31, .9));
  box-shadow: var(--shadow-card);
}

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

.page-faq .faq-map figcaption {
  padding: 12px clamp(16px, 3vw, 22px);
  border-top: 1px solid var(--line);
  background: rgba(6, 14, 31, .55);
  color: var(--mist);
  font-size: 13px;
  line-height: 1.6;
}

/* ---------- 三条分流入口 ---------- */
.page-faq .faq-routes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-faq .faq-route {
  display: block;
  padding: 18px 20px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(18, 42, 85, .55);
  text-decoration: none;
  transition: transform .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .faq-route:hover,
.page-faq .faq-route:focus-visible {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  background: rgba(18, 42, 85, .85);
}

.page-faq .faq-route__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-faq .faq-route__label {
  display: block;
  margin-top: 8px;
  font-family: var(--font-heading);
  font-size: 19px;
  font-weight: 700;
  color: var(--snow);
}

.page-faq .faq-route__desc {
  display: block;
  margin-top: 8px;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.65;
}

/* ---------- 主体区 ---------- */
.page-faq .faq-body {
  position: relative;
  padding: clamp(36px, 6vw, 72px) 0 clamp(40px, 7vw, 80px);
}

.page-faq .faq-filter-rail {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-faq .faq-filter {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 0 4px 10px;
  margin-bottom: clamp(18px, 3vw, 28px);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-filter .chip {
  flex: 0 0 auto;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(18, 42, 85, .6);
  color: var(--mist);
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}

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

.page-faq .faq-body:has(#faqcat-all:checked) .chip[for="faqcat-all"],
.page-faq .faq-body:has(#faqcat-login:checked) .chip[for="faqcat-login"],
.page-faq .faq-body:has(#faqcat-move:checked) .chip[for="faqcat-move"],
.page-faq .faq-body:has(#faqcat-install:checked) .chip[for="faqcat-install"],
.page-faq .faq-body:has(#faqcat-nav:checked) .chip[for="faqcat-nav"],
.page-faq .faq-body:has(#faqcat-code:checked) .chip[for="faqcat-code"],
.page-faq .faq-body:has(#faqcat-help:checked) .chip[for="faqcat-help"] {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-body:has(#faqcat-login:checked) .faq-cat:not([data-cat="login"]),
.page-faq .faq-body:has(#faqcat-move:checked) .faq-cat:not([data-cat="move"]),
.page-faq .faq-body:has(#faqcat-install:checked) .faq-cat:not([data-cat="install"]),
.page-faq .faq-body:has(#faqcat-nav:checked) .faq-cat:not([data-cat="nav"]),
.page-faq .faq-body:has(#faqcat-code:checked) .faq-cat:not([data-cat="code"]),
.page-faq .faq-body:has(#faqcat-help:checked) .faq-cat:not([data-cat="help"]) {
  display: none;
}

/* ---------- 分类 ---------- */
.page-faq .faq-cat {
  margin-bottom: clamp(32px, 5vw, 52px);
  scroll-margin-top: 96px;
}

.page-faq .faq-cat:last-of-type {
  margin-bottom: 0;
}

.page-faq .faq-cat__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--line-strong);
  margin-bottom: 4px;
}

.page-faq .faq-cat__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: clamp(26px, 5vw, 36px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-faq .faq-cat__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(21px, 3.4vw, 28px);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--snow);
}

.page-faq .faq-steps {
  max-width: 620px;
  margin: 22px 0 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(18, 42, 85, .5);
}

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

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  border-left: 2px solid transparent;
  border-bottom: 1px solid var(--line);
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, rgba(34, 211, 238, .09), rgba(34, 211, 238, 0) 72%);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 16px;
  cursor: pointer;
  list-style: none;
  border-radius: var(--radius-sm);
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: -2px;
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-faq .faq-item__q {
  font-size: clamp(16px, 2.4vw, 17px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--snow);
  transition: color .18s var(--ease);
}

.page-faq .faq-item summary:hover .faq-item__q {
  color: var(--cyan-light);
}

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-left: auto;
  margin-top: 4px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.page-faq .faq-item__mark::before {
  top: 8px;
  left: 0;
  right: 0;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  top: 0;
  bottom: 0;
  left: 8px;
  width: 2px;
}

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

.page-faq .faq-item__a {
  padding: 0 16px 20px 43px;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.75;
}

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

/* ---------- 底部联系区 ---------- */
.page-faq .faq-contact {
  padding: 0 0 clamp(48px, 8vw, 88px);
}

.page-faq .faq-contact__panel {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 44px);
  border: 2px solid rgba(240, 180, 41, .55);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(90% 120% at 88% 0%, rgba(124, 92, 255, .28), transparent 62%),
    linear-gradient(150deg, rgba(18, 42, 85, .92), rgba(6, 14, 31, .92));
  box-shadow: var(--shadow-card);
}

.page-faq .faq-contact__badge {
  display: inline-block;
  padding: 4px 12px;
  border: 1px solid rgba(240, 180, 41, .6);
  border-radius: 999px;
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
}

.page-faq .faq-contact__panel h2 {
  margin: 16px 0 0;
  font-family: var(--font-heading);
  font-size: clamp(22px, 3.6vw, 30px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--snow);
}

.page-faq .faq-contact__lead {
  max-width: 640px;
  margin-top: 14px;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.75;
}

.page-faq .faq-contact__list {
  display: grid;
  gap: 14px;
  margin: 24px 0 0;
}

.page-faq .faq-contact__list > div {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  align-items: baseline;
}

.page-faq .faq-contact__list dt {
  min-width: 84px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-faq .faq-contact__list dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 17px;
  letter-spacing: .02em;
  color: var(--snow);
  word-break: break-all;
}

.page-faq .faq-contact__note {
  margin-top: 18px;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.7;
}

.page-faq .faq-contact .btn--gold {
  margin-top: 24px;
}

/* ---------- 窄屏 ---------- */
@media (max-width: 620px) {
  .page-faq .faq-item summary {
    padding: 16px 12px;
    gap: 10px;
  }

  .page-faq .faq-item__a {
    padding: 0 12px 18px 12px;
  }

  .page-faq .faq-contact__list dt {
    min-width: 100%;
  }
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-routes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body .wrap {
    display: block;
  }

  .page-faq .faq-cat__head {
    padding-bottom: 14px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-route,
  .page-faq .faq-item,
  .page-faq .faq-item__q,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-filter .chip {
    transition: none;
  }

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