.page-faq {
  --faq-index-w: 258px;
  --faq-gap: clamp(28px, 4vw, 64px);
  background: var(--deep);
  color: var(--text);
  font-family: var(--font-body);
}

/* ---------- 顶部图带 ---------- */
.page-faq .faq-hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: clamp(320px, 42vw, 470px);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--deep);
  isolation: isolate;
}

.page-faq .faq-hero__img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 32%;
  opacity: .4;
}

.page-faq .faq-hero__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(7, 12, 27, .72) 0%, rgba(7, 12, 27, .28) 42%, rgba(7, 12, 27, .97) 100%),
    linear-gradient(90deg, rgba(7, 12, 27, .92) 0%, rgba(7, 12, 27, .2) 58%, rgba(7, 12, 27, .78) 100%);
}

.page-faq .faq-hero__veil::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(720px 320px at 12% 100%, rgba(255, 106, 26, .2), transparent 70%),
    radial-gradient(620px 300px at 88% 0%, rgba(47, 227, 210, .16), transparent 72%),
    repeating-linear-gradient(90deg, rgba(47, 227, 210, .05) 0 1px, transparent 1px 96px);
}

.page-faq .faq-hero__inner {
  position: relative;
  width: 100%;
  max-width: var(--shell-w-wide);
  margin: 0 auto;
  padding: 108px clamp(20px, 4vw, 48px) clamp(30px, 4vw, 52px);
}

.page-faq .faq-hero .breadcrumb-link {
  color: var(--text-dim);
}

.page-faq .faq-hero .breadcrumb-current {
  color: var(--cyan-mist);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 14px;
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5.4vw, 3.6rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-faq .faq-hero__lede {
  max-width: 64ch;
  margin: 0;
  font-size: clamp(.95rem, 1.35vw, 1.0625rem);
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 主体栅格 ---------- */
.page-faq .faq-layout {
  max-width: var(--shell-w-wide);
  margin: 0 auto;
  padding: 40px clamp(20px, 4vw, 48px) clamp(72px, 9vw, 120px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 44px;
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: var(--faq-gap);
    padding-top: clamp(48px, 5vw, 76px);
  }
}

/* ---------- 左侧主题索引 ---------- */
.page-faq .faq-index {
  align-self: start;
}

@media (min-width: 960px) {
  .page-faq .faq-index {
    position: sticky;
    top: 104px;
  }
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  padding-left: 12px;
  border-left: 2px solid var(--cyan);
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan-mist);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  color: var(--text-dim);
  font-size: .9375rem;
  line-height: 1.5;
  text-decoration: none;
  transition: color .18s var(--ease), border-left-color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--text);
  border-left-color: var(--signal);
  background: var(--panel);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .04em;
  color: var(--text-mute);
  transition: color .18s var(--ease);
}

.page-faq .faq-index__link:hover .faq-index__num {
  color: var(--signal-soft);
}

/* ---------- 右侧问答列 ---------- */
.page-faq .faq-body {
  min-width: 0;
  display: grid;
  gap: clamp(38px, 5vw, 68px);
}

.page-faq .faq-group {
  min-width: 0;
  scroll-margin-top: 112px;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: .875rem;
  letter-spacing: .1em;
  color: var(--signal);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: .01em;
  color: var(--text);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border-left: 2px solid var(--signal);
  border-bottom: 1px solid var(--line);
  padding-left: clamp(14px, 2vw, 22px);
  transition: border-left-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-item:hover {
  border-left-color: var(--signal-soft);
  background: linear-gradient(90deg, rgba(22, 34, 63, .6), rgba(22, 34, 63, 0));
}

.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, rgba(22, 34, 63, .5), rgba(22, 34, 63, 0));
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 6px 18px 0;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
  transition: color .18s var(--ease);
}

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

.page-faq .faq-item__q:hover {
  color: var(--signal-soft);
}

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

.page-faq .faq-item__sign {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin: 7px 0 0 auto;
}

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

.page-faq .faq-item__sign::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-faq .faq-item__sign::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1.5px;
  transform: translateX(-50%);
}

.page-faq .faq-item[open] .faq-item__sign::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .faq-item[open] .faq-item__sign::before {
  background: var(--cyan-mist);
}

.page-faq .faq-item__a {
  padding: 0 clamp(0px, 3vw, 28px) 22px 0;
  font-size: .9688rem;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-num {
  font-family: var(--font-mono);
  font-size: .95rem;
  letter-spacing: .04em;
  color: var(--signal);
}

.page-faq .faq-inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 210, .38);
  transition: color .18s var(--ease), border-bottom-color .18s var(--ease);
}

.page-faq .faq-inline-link:hover {
  color: var(--cyan-mist);
  border-bottom-color: var(--cyan-mist);
}

/* ---------- 步骤列表 ---------- */
.page-faq .faq-steps {
  counter-reset: step;
  list-style: none;
  margin: 12px 0 12px;
  padding: 0;
}

.page-faq .faq-steps > li {
  counter-increment: step;
  position: relative;
  padding: 11px 0 11px 36px;
  border-top: 1px dashed var(--line);
  line-height: 1.75;
  color: var(--text-dim);
}

.page-faq .faq-steps > li:last-child {
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-steps > li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 12px;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-faq .faq-steps strong {
  color: var(--text);
  font-weight: 600;
}

/* ---------- 通知触发对照列表 ---------- */
.page-faq .faq-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}

.page-faq .faq-list > li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  padding: 11px 0;
  border-top: 1px dashed var(--line);
}

.page-faq .faq-list > li:last-child {
  border-bottom: 1px dashed var(--line);
}

@media (min-width: 720px) {
  .page-faq .faq-list > li {
    grid-template-columns: 136px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

.page-faq .faq-list__key {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .03em;
  color: var(--signal-soft);
}

.page-faq .faq-list__val {
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 分组间图带 ---------- */
.page-faq .faq-break {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-faq .faq-break img {
  display: block;
  width: 100%;
  height: clamp(180px, 26vw, 300px);
  object-fit: cover;
  opacity: .48;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-item,
  .page-faq .faq-item__q,
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after,
  .page-faq .faq-inline-link {
    transition: none;
  }
}