.page-faq {
  --faq-panel-pad: clamp(18px, 3vw, 30px);
  --faq-ink-soft: rgba(11, 46, 40, .72);
  padding: clamp(8px, 2vw, 20px) 0 clamp(72px, 10vw, 140px);
  background:
    radial-gradient(120% 90% at 82% -12%, rgba(47, 243, 214, .10), transparent 58%),
    radial-gradient(80% 60% at 6% 30%, rgba(255, 138, 61, .05), transparent 62%),
    var(--ink-900);
}

/* ---------- 面包屑与首屏 ---------- */
.page-faq .breadcrumb {
  margin-top: clamp(18px, 3vw, 34px);
}

.page-faq .faq-hero {
  padding: clamp(34px, 6vw, 88px) 0 clamp(26px, 4vw, 52px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__eyebrow {
  margin: 0;
  font-family: var(--font-meta);
  font-size: 14px;
  letter-spacing: .22em;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  max-width: 17em;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 6.2vw, 60px);
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 22px 0 0;
  max-width: 36em;
  font-family: var(--font-body);
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.9;
  color: var(--mist);
}

.page-faq .faq-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 44px;
  margin: 34px 0 0;
  padding: 22px 0 0;
  border-top: 1px dashed var(--line);
  list-style: none;
}

.page-faq .faq-facts li {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-faq .faq-facts b {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-facts span {
  font-family: var(--font-meta);
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--mist);
}

/* ---------- 两栏骨架 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4vw, 56px);
  padding-top: clamp(32px, 5vw, 64px);
}

.page-faq .faq-main {
  min-width: 0;
}

/* ---------- 分类分段切换 ---------- */
.page-faq .cat-switch__tabs {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .cat-switch__tabs::-webkit-scrollbar {
  display: none;
}

.page-faq .cat-tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  color: var(--mist);
  white-space: nowrap;
  cursor: pointer;
  transition: color .25s var(--ease), background-color .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .cat-tab__num {
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: .05em;
  color: var(--cyan-deep);
  transition: color .25s var(--ease);
}

.page-faq .cat-tab:hover {
  color: var(--paper);
  border-color: var(--cyan-deep);
}

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

.page-faq .cat-tab:has(.cat-radio:focus-visible) {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .cat-switch:has(#cat-1:checked) .cat-tab--1,
.page-faq .cat-switch:has(#cat-2:checked) .cat-tab--2,
.page-faq .cat-switch:has(#cat-3:checked) .cat-tab--3,
.page-faq .cat-switch:has(#cat-4:checked) .cat-tab--4 {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .cat-switch:has(#cat-1:checked) .cat-tab--1 .cat-tab__num,
.page-faq .cat-switch:has(#cat-2:checked) .cat-tab--2 .cat-tab__num,
.page-faq .cat-switch:has(#cat-3:checked) .cat-tab--3 .cat-tab__num,
.page-faq .cat-switch:has(#cat-4:checked) .cat-tab--4 .cat-tab__num {
  color: rgba(6, 32, 28, .62);
}

/* 面板：默认全部可见，浏览器支持 :has 时按选中项切换 */
.page-faq .cat-panel {
  padding-top: 6px;
  animation: faq-pull .4s var(--ease) both;
}

.page-faq .cat-switch:has(#cat-1:checked) #panel-1,
.page-faq .cat-switch:has(#cat-2:checked) #panel-2,
.page-faq .cat-switch:has(#cat-3:checked) #panel-3,
.page-faq .cat-switch:has(#cat-4:checked) #panel-4 {
  display: block;
}

.page-faq .cat-switch:has(#cat-1:checked) #panel-2,
.page-faq .cat-switch:has(#cat-1:checked) #panel-3,
.page-faq .cat-switch:has(#cat-1:checked) #panel-4,
.page-faq .cat-switch:has(#cat-2:checked) #panel-1,
.page-faq .cat-switch:has(#cat-2:checked) #panel-3,
.page-faq .cat-switch:has(#cat-2:checked) #panel-4,
.page-faq .cat-switch:has(#cat-3:checked) #panel-1,
.page-faq .cat-switch:has(#cat-3:checked) #panel-2,
.page-faq .cat-switch:has(#cat-3:checked) #panel-4,
.page-faq .cat-switch:has(#cat-4:checked) #panel-1,
.page-faq .cat-switch:has(#cat-4:checked) #panel-2,
.page-faq .cat-switch:has(#cat-4:checked) #panel-3 {
  display: none;
}

@keyframes faq-pull {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-faq .cat-panel__head {
  margin: 24px 0 6px;
  max-width: 36em;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa[open] {
  border-bottom-color: var(--ink-700);
}

.page-faq .qa__btn {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 20px 36px 20px 0;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.5;
  color: var(--paper);
  transition: color .24s var(--ease);
}

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

.page-faq .qa__btn:hover {
  color: var(--cyan);
}

.page-faq .qa__btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-faq .qa__idx {
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  letter-spacing: .05em;
  color: var(--cyan);
}

.page-faq .qa[open] .qa__idx {
  color: var(--orange);
}

.page-faq .qa__q {
  min-width: 0;
}

.page-faq .qa__sign {
  position: absolute;
  right: 6px;
  top: 50%;
  width: 14px;
  height: 14px;
  margin-top: -7px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
}

.page-faq .qa__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .qa__sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
  transition: transform .28s var(--ease);
}

.page-faq .qa[open] .qa__sign::after {
  transform: scaleY(0);
}

.page-faq .qa__body {
  margin-left: 8px;
  padding: 2px 20px 24px 20px;
  border-left: 2px solid var(--cyan);
}

.page-faq .qa__body p {
  margin: 0;
  max-width: 38em;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.9;
  color: var(--mist);
}

.page-faq .qa__body p + p {
  margin-top: 10px;
}

/* ---------- 面板内配图 ---------- */
.page-faq .qa-figure {
  margin: 22px 0 10px;
  padding: 0;
}

.page-faq .qa-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--ink-700);
  background: var(--ink-800);
}

.page-faq .qa-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-meta);
  font-size: 14px;
  letter-spacing: .05em;
  color: var(--mist);
}

/* ---------- 侧栏 ---------- */
.page-faq .faq-side {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-faq .hot {
  padding: var(--faq-panel-pad);
  border: 1px solid var(--ink-700);
  border-radius: 4px;
  background: var(--glass);
  backdrop-filter: blur(10px);
}

.page-faq .hot__cap {
  margin: 0;
  font-family: var(--font-meta);
  font-size: 14px;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-faq .hot__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .hot__list li + li {
  border-top: 1px solid var(--fsaq-divider, rgba(21, 68, 60, .8));
}

.page-faq .hot__list a {
  display: flex;
  gap: 12px;
  padding: 13px 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.65;
  color: var(--paper);
  text-decoration: none;
  transition: color .2s var(--ease);
}

.page-faq .hot__list a:hover {
  color: var(--cyan);
}

.page-faq .hot__list a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .hot__n {
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: .05em;
  color: var(--orange);
}

.page-faq .side-card {
  padding: var(--faq-panel-pad);
  border: 1px solid var(--ink-700);
  border-radius: 4px;
  background: var(--ink-800);
}

.page-faq .side-card__cap {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  color: var(--paper);
}

.page-faq .side-card__txt {
  margin: 10px 0 16px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .side-card__link {
  display: inline-block;
  font-family: var(--font-meta);
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 243, 214, .45);
  padding-bottom: 2px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .side-card__link:hover {
  color: var(--orange-soft);
  border-bottom-color: var(--orange-soft);
}

/* ---------- 收束区块 ---------- */
.page-faq .faq-help {
  margin-top: clamp(48px, 7vw, 96px);
  padding: clamp(26px, 5vw, 54px);
  border: 1px solid var(--ink-700);
  border-radius: 4px;
  background:
    linear-gradient(180deg, rgba(255, 138, 61, .12), transparent 72%),
    var(--ink-800);
}

.page-faq .faq-help__eyebrow {
  margin: 0;
  font-family: var(--font-meta);
  font-size: 14px;
  letter-spacing: .18em;
  color: var(--orange-soft);
}

.page-faq .faq-help h2 {
  margin: 14px 0 0;
  max-width: 20em;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .faq-help__lede {
  margin: 16px 0 0;
  max-width: 34em;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.9;
  color: var(--mist);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .cat-panel__head {
    margin-top: 28px;
  }

  .page-faq .qa__body {
    margin-left: 12px;
    padding-left: 26px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: 118px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .cat-panel {
    animation: none;
  }

  .page-faq .qa__sign::after,
  .page-faq .cat-tab,
  .page-faq .qa__btn,
  .page-faq .hot__list a,
  .page-faq .side-card__link {
    transition: none;
  }
}

.page-faq {
  --fsaq-divider: currentColor;
}