.page-faq {
  --faq-rail-w: 172px;
  --faq-rule: var(--slate-line);
  --faq-line-cyan: rgba(61, 232, 200, .6);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-deep);
  color: var(--paper);
  padding: clamp(20px, 4vw, 32px) 0 clamp(32px, 5vw, 60px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto -12% -45% 42%;
  height: 460px;
  background: radial-gradient(circle at 50% 50%, rgba(61, 232, 200, .16), transparent 64%);
  pointer-events: none;
}

.page-faq .faq-hero .breadcrumb {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-hero .breadcrumb__link {
  color: var(--cyan-soft);
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumb__link:hover,
.page-faq .faq-hero .breadcrumb__link:focus-visible {
  text-decoration: underline;
}

.page-faq .faq-hero .breadcrumb__current {
  color: rgba(244, 247, 245, .72);
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: center;
}

.page-faq .faq-hero__copy {
  max-width: 40rem;
}

.page-faq .faq-hero .eyebrow {
  color: var(--cyan);
  margin-bottom: 12px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 5.4vw, 3.3rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  font-size: clamp(.95rem, 1.5vw, 1.05rem);
  line-height: 1.8;
  color: rgba(244, 247, 245, .84);
  max-width: 34em;
  margin: 0 0 24px;
}

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

.page-faq .faq-hero__meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 0;
  padding: 0;
  font-size: .82rem;
  color: rgba(244, 247, 245, .7);
}

.page-faq .faq-hero__meta .num {
  color: var(--cyan);
  font-size: .95rem;
  margin-right: 2px;
}

.page-faq .faq-hero__figure {
  margin: 0;
  border-radius: var(--radius-l);
  overflow: hidden;
  border: 1px solid var(--mid);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
}

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

/* 主体布局 */
.page-faq .faq-body {
  background: var(--paper);
}

.page-faq .faq-body__layout {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

/* 分类锚点栏 */
.page-faq .faq-rail__label {
  color: var(--text-sub);
  margin: 0 0 10px;
}

.page-faq .faq-rail__list {
  list-style: none;
  display: flex;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0 0 10px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--faq-rule);
  background: var(--slate);
  color: var(--text);
  font-size: .84rem;
  text-decoration: none;
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-rail__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mid);
  flex: none;
  transition: background 180ms var(--ease);
}

.page-faq .faq-rail__num {
  font-size: .7rem;
  color: var(--text-sub);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  background: var(--ink-deep);
  border-color: var(--ink-deep);
  color: var(--paper);
}

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

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

.page-faq .faq-rail__card {
  border-radius: var(--radius-m);
  background: var(--slate);
  border: 1px solid var(--faq-rule);
  padding: 16px 16px 18px;
}

.page-faq .faq-rail__card-title {
  font-family: var(--font-display);
  font-size: 1rem;
  margin: 0 0 6px;
  color: var(--text);
}

.page-faq .faq-rail__card-text {
  font-size: .8rem;
  line-height: 1.7;
  color: var(--text-sub);
  margin: 0 0 10px;
}

.page-faq .faq-rail__card-link {
  display: inline-block;
  font-size: .82rem;
  color: var(--mid);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-line-cyan);
  padding-bottom: 2px;
}

.page-faq .faq-rail__card-link:hover,
.page-faq .faq-rail__card-link:focus-visible {
  color: var(--ink-deep);
  border-bottom-color: var(--ink-deep);
}

/* 问答列表 */
.page-faq .faq-main {
  min-width: 0;
  display: grid;
  gap: clamp(30px, 4vw, 48px);
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h-compact) + 56px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 8px;
}

.page-faq .faq-group__index {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  color: var(--slate-line);
  line-height: 1;
}

.page-faq .faq-group h2 {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.6vw, 1.75rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 0;
}

.page-faq .faq-item {
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-item:last-of-type {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
}

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

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

.page-faq .faq-item__sign {
  position: relative;
  flex: none;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border: 1px solid var(--mid);
  border-radius: 50%;
  transition: background 200ms var(--ease), border-color 200ms var(--ease);
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--mid);
  border-radius: 1px;
  transition: transform 220ms var(--ease), opacity 220ms var(--ease), background 200ms var(--ease);
}

.page-faq .faq-item__sign::before {
  left: 4px;
  right: 4px;
  top: 50%;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-faq .faq-item__sign::after {
  top: 4px;
  bottom: 4px;
  left: 50%;
  width: 1.5px;
  transform: translateX(-50%);
}

.page-faq .faq-item[open] .faq-item__sign {
  background: rgba(61, 232, 200, .16);
  border-color: var(--cyan);
}

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

.page-faq .faq-item[open] .faq-item__sign::after {
  transform: translateX(-50%) rotate(90deg);
  opacity: 0;
}

.page-faq .faq-item__a {
  margin: 0 0 20px 2px;
  padding: 2px 0 2px 18px;
  border-left: 3px solid var(--faq-line-cyan);
}

.page-faq .faq-item__a p {
  font-size: .93rem;
  line-height: 1.85;
  color: var(--text-sub);
  max-width: 36em;
  margin: 0 0 10px;
}

.page-faq .faq-item__next {
  display: inline-block;
  font-size: .82rem;
  color: var(--mid);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-line-cyan);
  padding-bottom: 2px;
}

.page-faq .faq-item__next::after {
  content: " →";
  color: var(--cyan);
}

.page-faq .faq-item__next:hover,
.page-faq .faq-item__next:focus-visible {
  color: var(--ink-deep);
  border-bottom-color: var(--ink-deep);
}

/* 入口差异配图 */
.page-faq .faq-figure {
  margin: 20px 0 0;
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--slate);
  border: 1px solid var(--faq-rule);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  font-size: .78rem;
  line-height: 1.7;
  color: var(--text-sub);
  border-top: 1px solid var(--faq-rule);
}

/* 联系区 */
.page-faq .faq-contact {
  margin-top: 12px;
  border-radius: var(--radius-l);
  background: var(--ink-deep);
  color: var(--paper);
  padding: clamp(20px, 3.4vw, 32px);
}

.page-faq .faq-contact__lede {
  font-size: .93rem;
  line-height: 1.85;
  color: rgba(244, 247, 245, .82);
  max-width: 36em;
  margin: 0 0 20px;
}

.page-faq .faq-contact .copy-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 12px 0;
  border-top: 1px solid var(--mid);
}

.page-faq .faq-contact .copy-line__key {
  flex: none;
  min-width: 72px;
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--cyan-soft);
}

.page-faq .faq-contact .copy-line__value {
  font-size: .88rem;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .faq-contact .copy-line__hint {
  font-size: .76rem;
  color: var(--cyan);
  min-height: 1em;
}

.page-faq .faq-contact__address {
  font-size: .84rem;
  line-height: 1.8;
  color: rgba(244, 247, 245, .7);
  margin: 14px 0 0;
}

.page-faq .faq-contact__tips {
  list-style: none;
  margin: 18px 0 22px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-contact__tips li {
  position: relative;
  padding-left: 16px;
  font-size: .84rem;
  line-height: 1.75;
  color: rgba(244, 247, 245, .76);
}

.page-faq .faq-contact__tips li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
}

/* 窄屏：锚点栏改为横向滑动 */
@media (max-width: 599px) {
  .page-faq .faq-hero__actions .btn {
    flex: 1 1 100%;
    text-align: center;
  }

  .page-faq .faq-item__q {
    font-size: .95rem;
    gap: 12px;
  }
}

@media (min-width: 600px) {
  .page-faq .faq-hero__meta {
    font-size: .86rem;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.05fr .95fr;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body__layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h-compact) + 56px);
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
    margin-bottom: 22px;
  }

  .page-faq .faq-rail__link {
    width: 100%;
    border-radius: var(--radius-xs);
    border-color: transparent;
    background: transparent;
    padding: 9px 10px;
    white-space: normal;
    line-height: 1.4;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    background: var(--ink-deep);
    border-color: var(--ink-deep);
  }

  .page-faq .faq-item__q {
    font-size: 1.02rem;
  }
}