.page-faq {
  --faq-gap: clamp(20px, 2.4vw, 32px);
  --faq-inset: clamp(18px, 2.6vw, 30px);
  background: var(--bg);
  color: var(--text);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-breadcrumb {
  padding-top: calc(var(--header-h) + 16px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(22px, 3.5vw, 40px);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(26px, 4vw, 40px);
  align-items: center;
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-size: clamp(34px, 8vw, 66px);
  line-height: 1.04;
  letter-spacing: -0.025em;
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 48ch;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px clamp(20px, 3.4vw, 40px);
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: clamp(16px, 2.4vw, 24px) 0 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-faq .faq-hero__num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 28px);
  letter-spacing: 0.02em;
  color: var(--cyan);
  line-height: 1;
}

.page-faq .faq-hero__cap {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .faq-hero__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel-2);
}

.page-faq .faq-hero__media::before,
.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border-style: solid;
  border-color: var(--cyan);
  border-width: 0;
  pointer-events: none;
  z-index: 2;
}

.page-faq .faq-hero__media::before {
  top: -1px;
  left: -1px;
  border-top-width: 2px;
  border-left-width: 2px;
}

.page-faq .faq-hero__media::after {
  right: -1px;
  bottom: -1px;
  border-right-width: 2px;
  border-bottom-width: 2px;
}

/* ---------- 分类标签墙 ---------- */
.page-faq .faq-index__head {
  margin-bottom: clamp(20px, 3vw, 30px);
}

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

.page-faq .faq-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 15px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.3;
  transition: border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.page-faq .faq-tag:hover,
.page-faq .faq-tag:focus-visible {
  border-color: var(--cyan);
  background: rgba(0, 240, 212, 0.06);
  transform: translateY(-2px);
}

.page-faq .faq-tag__dot {
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 240, 212, 0.14);
}

.page-faq .faq-tag__count {
  font-size: 12px;
  color: var(--muted);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(30px, 4.5vw, 56px);
}

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

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 24px);
  padding-top: clamp(28px, 4vw, 44px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-group:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(30px, 4.5vw, 52px);
}

.page-faq .faq-group__head {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: clamp(16px, 2.2vw, 22px);
}

.page-faq .faq-group__no {
  flex: none;
  margin-top: 4px;
  padding: 3px 7px;
  border: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  line-height: 1.5;
}

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

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(22px, 3.2vw, 31px);
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.page-faq .faq-group__desc {
  margin: 8px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 可折叠答案 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: stretch;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: 16.5px;
  line-height: 1.5;
  color: var(--text);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  flex: none;
  margin-left: auto;
  align-self: flex-start;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "−";
  color: var(--cyan);
}

.page-faq .faq-item__mark {
  flex: none;
  width: 2px;
  min-height: 20px;
  align-self: stretch;
  background: var(--line);
  transition: background-color var(--dur) var(--ease);
}

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

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

.page-faq .faq-item__q:hover .faq-item__mark,
.page-faq .faq-item__q:focus-visible .faq-item__mark {
  background: var(--cyan);
}

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

.page-faq .faq-item__a {
  margin-left: 1px;
  padding: 2px 0 20px 16px;
  border-left: 1px solid var(--line);
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

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

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

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 240, 212, 0.42);
  transition: border-color var(--dur) var(--ease);
}

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

/* ---------- 章节配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--line);
  background: var(--panel-2);
}

/* ---------- 客服信息条 ---------- */
.page-faq .faq-contact-strip {
  display: grid;
  gap: 1px;
  margin-bottom: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line);
  background: var(--line);
}

.page-faq .faq-contact-cell {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px var(--faq-inset);
  background: var(--panel);
}

.page-faq .faq-contact-cell__key {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-faq .faq-contact-cell__val {
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
  word-break: break-word;
}

/* ---------- 侧栏 ---------- */
.page-faq .faq-side {
  display: grid;
  gap: 16px;
  align-content: start;
  min-width: 0;
}

.page-faq .faq-side__panel {
  padding: var(--faq-inset);
}

.page-faq .faq-side__panel--accent {
  background: linear-gradient(180deg, rgba(0, 240, 212, 0.07), transparent 62%), var(--panel);
  border-color: rgba(0, 240, 212, 0.28);
}

.page-faq .faq-side__title {
  margin: 10px 0 14px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text);
}

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

.page-faq .faq-side__link {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  color: var(--muted);
  text-decoration: none;
  font-size: 14.5px;
  line-height: 1.5;
  transition: color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-faq .faq-side__link .mono {
  flex: none;
  font-size: 11.5px;
  color: var(--cyan);
}

.page-faq .faq-side__link:hover,
.page-faq .faq-side__link:focus-visible {
  color: var(--text);
  border-left-color: var(--cyan);
  background: rgba(0, 240, 212, 0.06);
}

.page-faq .faq-side__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-contact-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-faq .faq-contact-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

@media (max-width: 480px) {
  .page-faq .faq-item__q {
    font-size: 15.5px;
    gap: 12px;
  }

  .page-faq .faq-item__a {
    font-size: 15px;
    padding-left: 13px;
  }

  .page-faq .faq-tag {
    padding: 10px 13px;
    font-size: 14px;
  }

  .page-faq .faq-contact-cell__val {
    font-size: 13.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tag,
  .page-faq .faq-item__q,
  .page-faq .faq-item__mark,
  .page-faq .faq-side__link {
    transition: none;
  }

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