.page-faq {
  position: relative;
  isolation: isolate;
  padding-bottom: clamp(64px, 9vw, 128px);
  color: var(--mist);
}

/* 面包屑 */
.page-faq .page-faq-crumb {
  padding-top: clamp(20px, 3vw, 34px);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  max-width: 1000px;
  padding: clamp(30px, 5vw, 64px) 0 clamp(26px, 4vw, 44px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -12%;
  width: min(560px, 72vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(33, 230, 193, 0.14), transparent 68%);
  pointer-events: none;
  z-index: -1;
}

.page-faq .faq-hero h1 {
  margin: 16px 0 20px;
  font-size: clamp(32px, 5.2vw, 68px);
  font-weight: 300;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-faq .faq-hero .lede {
  max-width: 62ch;
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.8;
  color: var(--steel);
}

.page-faq .faq-hero-meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
}

/* 分类索引带 */
.page-faq .faq-index {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  margin-top: clamp(6px, 2vw, 18px);
  padding-top: 18px;
  padding-bottom: 18px;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-anchors {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
}

.page-faq .faq-anchors a {
  flex: 0 0 auto;
  text-decoration: none;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}

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

.page-faq .faq-anchors a[aria-current="true"] {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* 章节 */
.page-faq .faq-section {
  padding-top: clamp(52px, 8vw, 104px);
  scroll-margin-top: 100px;
}

.page-faq .faq-section-head {
  display: grid;
  gap: 8px;
  max-width: 780px;
  margin-bottom: clamp(24px, 3.6vw, 40px);
}

.page-faq .faq-section-head h2 {
  margin: 0;
  font-size: clamp(24px, 3.2vw, 42px);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--mist);
}

/* 图文分栏 */
.page-faq .faq-split {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  grid-template-columns: minmax(0, 1fr);
}

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

.page-faq .faq-figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--steel);
}

.page-faq .faq-figure-wide {
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-faq .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: inherit;
}

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

.page-faq .faq-item {
  position: relative;
  padding-left: 28px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 0;
  bottom: 0;
  width: 2px;
  border-radius: 2px;
  background: var(--line-soft);
  transition: background 0.35s var(--ease);
}

.page-faq .faq-item::after {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--steel);
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-faq .faq-item[open]::before {
  background: linear-gradient(180deg, var(--cyan), rgba(33, 230, 193, 0.08));
}

.page-faq .faq-item[open]::after {
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(33, 230, 193, 0.12);
}

.page-faq .faq-q {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 20px 52px 20px 0;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--mist);
  transition: color 0.25s var(--ease);
}

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

.page-faq .faq-q h3 {
  display: inline;
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
  color: inherit;
}

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

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
  border-radius: 6px;
}

.page-faq .faq-q::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 50%;
  width: 15px;
  height: 2px;
  background: var(--steel);
  transform: translateY(-50%);
  transition: background 0.3s var(--ease);
}

.page-faq .faq-q::before {
  content: "";
  position: absolute;
  right: 20.5px;
  top: 50%;
  width: 2px;
  height: 15px;
  background: var(--steel);
  transform: translateY(-50%);
  transition: transform 0.3s var(--ease), opacity 0.25s var(--ease), background 0.3s var(--ease);
}

.page-faq .faq-item[open] .faq-q::before {
  transform: translateY(-50%) rotate(90deg);
  opacity: 0;
}

.page-faq .faq-item[open] .faq-q::after {
  background: var(--cyan);
}

.page-faq .faq-a {
  margin: 0 0 22px;
  padding: 16px 20px 18px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-soft);
  background: linear-gradient(135deg, rgba(22, 53, 95, 0.55), rgba(14, 30, 66, 0.35));
  color: var(--steel);
  font-size: 16px;
  line-height: 1.8;
}

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

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

.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(33, 230, 193, 0.4);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

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

.page-faq .faq-item[open] .faq-a {
  animation: faqAnswerIn 0.34s var(--ease) both;
}

@keyframes faqAnswerIn {
  from {
    opacity: 0;
    transform: translateX(-12px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* 人工帮助 */
.page-faq .faq-support {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  grid-template-columns: minmax(0, 1fr);
  padding: clamp(26px, 4vw, 52px);
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(33, 230, 193, 0.15), transparent 58%),
    linear-gradient(150deg, rgba(22, 53, 95, 0.8), rgba(8, 18, 43, 0.95));
}

.page-faq .faq-support-copy {
  display: grid;
  gap: 14px;
  justify-items: start;
}

.page-faq .faq-support-copy h2 {
  margin: 0;
  font-size: clamp(24px, 3.2vw, 40px);
  font-weight: 600;
  line-height: 1.15;
  color: var(--mist);
}

.page-faq .faq-support-copy p {
  margin: 0;
  max-width: 44ch;
  color: var(--steel);
  line-height: 1.8;
}

.page-faq .faq-contact {
  display: grid;
  gap: 20px;
  margin: 0;
}

.page-faq .faq-contact dt {
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--steel);
}

.page-faq .faq-contact dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--mist);
  overflow-wrap: anywhere;
  word-break: break-word;
}

/* 桌面分栏 */
@media (min-width: 900px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-faq .faq-support {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: center;
  }
}

/* 窄屏 */
@media (max-width: 560px) {
  .page-faq .faq-index {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-faq .faq-hero::before {
    right: -30%;
    width: 90vw;
  }

  .page-faq .faq-q {
    padding-right: 44px;
    font-size: 16px;
  }

  .page-faq .faq-a {
    padding: 14px 16px 16px;
    font-size: 15px;
  }

  .page-faq .faq-support {
    padding: 22px;
    border-radius: var(--r-md);
  }
}

/* 尊重减少动态偏好 */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-a {
    animation: none;
  }

  .page-faq .faq-item::before,
  .page-faq .faq-item::after,
  .page-faq .faq-q,
  .page-faq .faq-q::before,
  .page-faq .faq-q::after,
  .page-faq .faq-anchors a {
    transition: none;
  }
}