.page-faq {
  display: block;
  overflow-x: clip;
}

.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(1.75rem, 4.5vw, 3rem) 0 clamp(2rem, 5vw, 3.25rem);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  border-radius: var(--r-lg);
  background:
    radial-gradient(58% 72% at 10% 0%, rgba(56, 240, 216, 0.16), transparent 68%),
    radial-gradient(46% 62% at 94% 4%, rgba(255, 138, 61, 0.12), transparent 72%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: 0;
  top: 8%;
  width: 40%;
  height: 84%;
  z-index: -1;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    115deg,
    rgba(56, 240, 216, 0.08) 0 1px,
    transparent 1px 14px
  );
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 62%);
  mask-image: linear-gradient(90deg, transparent, #000 62%);
}

.page-faq .faq-hero__title {
  margin: 0.75rem 0 0;
  max-width: 22ch;
  font-size: clamp(1.85rem, 4.6vw, 3.25rem);
  line-height: 1.1;
  letter-spacing: -0.022em;
  color: var(--star);
}

.page-faq .faq-hero__lede {
  margin: 1.15rem 0 0;
  max-width: 60ch;
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.page-faq .faq-layout {
  display: grid;
  gap: 2.25rem;
  padding-bottom: clamp(3rem, 7vw, 5rem);
}

/* 索引：窄屏在上方横向滚动，宽屏贴右成粘性竖栏 */
.page-faq .faq-index {
  order: -1;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 0.5rem;
  margin: 0.9rem 0 0;
  padding: 0 0 0.35rem;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-index__list li {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  color: var(--haze);
  font-size: 0.875rem;
  line-height: 1.3;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--t), border-color var(--t), background-color var(--t);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--star);
  border-color: var(--cyan);
  background-color: rgba(56, 240, 216, 0.08);
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

/* 主内容 */
.page-faq .faq-section {
  padding-top: clamp(2.25rem, 5vw, 3.25rem);
  scroll-margin-top: 5.5rem;
}

.page-faq .faq-main > .faq-section:first-child {
  padding-top: 0;
}

.page-faq .faq-section + .faq-section {
  border-top: 1px solid var(--line);
  margin-top: clamp(2.25rem, 5vw, 3.25rem);
}

.page-faq .faq-section__head {
  max-width: 62ch;
}

.page-faq .faq-section__title {
  margin: 0.6rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 2.8vw, 1.9rem);
  line-height: 1.25;
  letter-spacing: -0.018em;
  color: var(--star);
}

.page-faq .faq-section__head .lede {
  margin-top: 0.85rem;
}

/* 问答列表 */
.page-faq .faq-list {
  margin-top: 1.65rem;
  border-top: 1px solid var(--line);
}

.page-faq .faq-item {
  position: relative;
  border-bottom: 1px solid var(--line);
  transition: background-color var(--t);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: -0.65rem;
  top: 1.1rem;
  bottom: 1.1rem;
  width: 2px;
  border-radius: var(--r-pill);
  background: var(--cyan);
  opacity: 0;
  transition: opacity var(--t);
  pointer-events: none;
}

.page-faq .faq-item:focus-within::before {
  opacity: 1;
}

.page-faq .faq-item__title {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .faq-item__btn {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr) 1.5rem;
  gap: 0.75rem;
  align-items: start;
  width: 100%;
  margin: 0;
  padding: 1.15rem 0.25rem;
  border: 0;
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--star);
  text-align: left;
  font: inherit;
  cursor: pointer;
  transition: color var(--t), background-color var(--t);
}

.page-faq .faq-item__btn:hover {
  color: var(--cyan);
  background-color: rgba(56, 240, 216, 0.05);
}

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

.page-faq .faq-no {
  padding-top: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .faq-q {
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.1vw, 1.2rem);
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: -0.012em;
}

.page-faq .faq-item .fold__sign {
  justify-self: end;
  margin-top: 0.25rem;
}

.page-faq .faq-item > .fold__panel {
  padding: 0 0 1.4rem 3.25rem;
}

.page-faq .faq-a > * + * {
  margin-top: 0.9rem;
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 68ch;
  color: var(--haze);
  font-size: 0.9688rem;
  line-height: 1.75;
}

.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 240, 216, 0.45);
}

.page-faq .faq-a a:hover,
.page-faq .faq-a a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-faq .data-num {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0;
  color: var(--cyan);
}

/* 步骤胶囊 */
.page-faq .faq-steps {
  margin: 0.9rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.6rem;
  max-width: 68ch;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 1.5rem minmax(0, 1fr);
  gap: 0.7rem;
  align-items: start;
  color: var(--haze);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-faq .faq-steps__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: var(--r-pill);
  border: 1px solid rgba(56, 240, 216, 0.38);
  background: rgba(56, 240, 216, 0.12);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  line-height: 1;
}

/* 图片 */
.page-faq .faq-section > .media-frame {
  margin-top: 1.75rem;
}

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

/* 联系卡片 */
.page-faq .desk-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.75rem;
}

.page-faq .desk-card {
  padding: 1.4rem 1.5rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, var(--ink-800), var(--ink-900));
}

.page-faq .desk-card--phone {
  border-left-color: var(--amber);
}

.page-faq .desk-card__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--haze);
}

.page-faq .desk-card__val {
  margin: 0.75rem 0 0;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  font-weight: 600;
  line-height: 1.4;
  color: var(--star);
  word-break: break-word;
}

.page-faq .desk-card--phone .desk-card__val {
  color: var(--amber-soft);
}

.page-faq .desk-card__note {
  margin: 0.7rem 0 0;
  color: var(--haze);
  font-size: 0.875rem;
  line-height: 1.65;
}

/* 宽屏：主栏 + 右侧粘性索引 */
@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 15rem;
    gap: 3.5rem;
    align-items: start;
  }

  .page-faq .faq-index {
    order: 0;
    position: sticky;
    top: 5.5rem;
    padding-bottom: 0;
    border-bottom: 0;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0;
    margin-top: 1.1rem;
    padding: 0;
    border-left: 1px solid var(--line);
    overflow: visible;
  }

  .page-faq .faq-index__list li {
    flex: 0 0 auto;
    width: 100%;
  }

  .page-faq .faq-index__link {
    display: flex;
    width: 100%;
    padding: 0.55rem 0.25rem 0.55rem 1rem;
    margin-left: -1px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    white-space: normal;
    line-height: 1.45;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: var(--cyan);
    color: var(--star);
    background: linear-gradient(90deg, rgba(56, 240, 216, 0.1), transparent 72%);
  }

  .page-faq .desk-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

@media (max-width: 640px) {
  .page-faq .faq-item__btn {
    grid-template-columns: 2rem minmax(0, 1fr) 1.25rem;
    gap: 0.5rem;
  }

  .page-faq .faq-item > .fold__panel {
    padding-left: 0;
  }

  .page-faq .faq-item::before {
    left: 0;
    top: auto;
    bottom: 0;
    width: 100%;
    height: 2px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__btn,
  .page-faq .faq-index__link,
  .page-faq .faq-item::before {
    transition-duration: 0.01ms;
  }
}