.page-faq {
  background: var(--light-gray);
  color: var(--shadow);
}

/* Hero */
.page-faq__hero {
  position: relative;
  overflow: hidden;
  padding: 40px 20px 56px;
  background: var(--graphite);
  color: var(--white);
}
.page-faq__hero::after {
  content: '';
  position: absolute;
  right: -10%;
  top: -24%;
  width: 34%;
  height: 148%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 100%);
  transform: skewX(-18deg);
  z-index: 0;
}
.page-faq__hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
}
.page-faq__hero h1 {
  max-width: 820px;
  margin: 14px 0 18px;
  font-family: var(--font-title);
  font-size: clamp(2.1rem, 5vw, 4rem);
  font-weight: 900;
  font-style: italic;
  line-height: 1.12;
  letter-spacing: -0.01em;
}
.page-faq__lede {
  max-width: 700px;
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.02rem;
  line-height: 1.8;
}
.page-faq__hero-cta {
  margin-top: 28px;
  box-shadow: 8px 8px 0 var(--primary-deep);
  transition: transform var(--ts), box-shadow var(--ts);
}
.page-faq__hero-cta:hover {
  transform: translate(2px, 2px);
  box-shadow: 4px 4px 0 var(--primary-deep);
}
.page-faq__hero-deco {
  position: absolute;
  right: 4%;
  top: 50%;
  z-index: 1;
  transform: translateY(-50%) skewX(-12deg) rotate(-5deg);
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(4rem, 12vw, 9rem);
  color: rgba(255, 255, 255, 0.12);
  letter-spacing: -0.05em;
  white-space: nowrap;
  pointer-events: none;
}

/* 面包屑的页面内调整 */
.page-faq .breadcrumb__list {
  margin: 0;
  padding: 0;
}
.page-faq .breadcrumb__link,
.page-faq .breadcrumb__item {
  color: rgba(255, 255, 255, 0.72);
}
.page-faq .breadcrumb__item[aria-current="page"] {
  color: var(--highlighter);
}

/* 双栏布局 */
.page-faq__layout {
  max-width: 1280px;
  margin: 0 auto;
}

/* 左侧索引：移动端为横向胶囊条 */
.page-faq__index {
  padding: 18px 0 12px;
  background: var(--graphite);
}
.page-faq__index-kicker {
  display: none;
}
.page-faq__index-list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 20px 6px;
  overflow-x: auto;
  scrollbar-width: none;
  list-style: none;
}
.page-faq__index-list::-webkit-scrollbar {
  display: none;
}
.page-faq__index-link {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 999px;
  background: var(--graphite-panel);
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  transition: background var(--ts), transform var(--ts);
}
.page-faq__index-link:hover {
  background: var(--primary);
  transform: translateY(-2px);
}
.page-faq__index-no {
  font-family: var(--font-mono);
  font-style: italic;
  color: var(--highlighter);
  font-size: 0.85rem;
}
.page-faq__index-figure {
  display: none;
}

/* 中央竖线：桌面显示 */
.page-faq__rail {
  display: none;
}

/* 右侧内容 */
.page-faq__content {
  padding: 0 20px 56px;
}

/* 分区 */
.page-faq__group {
  padding: 48px 0 12px;
  scroll-margin-top: 24px;
}
.page-faq__group + .page-faq__group {
  border-top: 1px solid rgba(58, 61, 66, 0.35);
}
.page-faq__group-head {
  margin: 0 0 20px;
}
.page-faq__group-head .section-head__title {
  font-size: clamp(1.5rem, 2.4vw, 2.1rem);
}
.page-faq .section-head__kicker {
  color: var(--primary-deep);
  font-family: var(--font-mono);
}

/* 手风琴问题 */
.page-faq .faq-item {
  position: relative;
  border-bottom: 1px solid rgba(58, 61, 66, 0.35);
  scroll-margin-top: 24px;
}
.page-faq .faq-item:last-of-type {
  border-bottom: 0;
}
.page-faq .faq-item[open]::before {
  content: '';
  position: absolute;
  left: -4px;
  top: 0;
  bottom: 0;
  width: 4px;
  border-radius: 4px;
  background: var(--highlighter);
}
.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 24px 8px 24px 2px;
  cursor: pointer;
  list-style: none;
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__num {
  flex: 0 0 40px;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  line-height: 1.2;
  font-weight: 700;
  font-style: italic;
  color: var(--primary);
  transform: skewX(-8deg);
}
.page-faq .faq-item__q {
  flex: 1;
  margin: 0;
  font-family: var(--font-title);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--shadow);
}
.page-faq .faq-item__icon {
  position: relative;
  flex: 0 0 22px;
  width: 22px;
  height: 22px;
  margin-top: 2px;
}
.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--primary-deep);
  transition: transform var(--ts);
}
.page-faq .faq-item__icon::before {
  width: 14px;
  height: 2px;
  transform: translate(-50%, -50%);
}
.page-faq .faq-item__icon::after {
  width: 2px;
  height: 14px;
  transform: translate(-50%, -50%);
}
.page-faq .faq-item[open] .faq-item__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
}
.page-faq .faq-item__body {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows 0.2s ease, opacity 0.18s ease;
}
.page-faq .faq-item[open] .faq-item__body {
  grid-template-rows: 1fr;
  opacity: 1;
}
.page-faq .faq-item__inner {
  overflow: hidden;
  padding: 0 16px 24px 52px;
}
.page-faq .faq-item__inner p {
  margin: 0 0 12px;
  color: #45494f;
  font-size: 0.98rem;
  line-height: 1.8;
}
.page-faq .faq-item__inner p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-item__anchor {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 10px;
  padding-bottom: 2px;
  color: var(--primary-deep);
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px dashed rgba(183, 28, 36, 0.4);
}
.page-faq .faq-item__anchor::before {
  content: '#';
  font-family: var(--font-mono);
}
.page-faq .faq-item__anchor:hover {
  color: var(--graphite);
  border-bottom-color: var(--graphite);
}

/* 分区尾链 */
.page-faq__group-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  padding: 10px 16px 10px 20px;
  border-radius: 999px 4px 999px 4px;
  background: var(--graphite);
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  transition: background var(--ts), transform var(--ts);
}
.page-faq__group-more:hover {
  background: var(--primary);
  transform: translateX(4px);
}

/* 支持卡 */
.page-faq__support {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 48px;
  padding: 32px 24px;
  border-radius: var(--radius-lg);
  background: var(--graphite);
  color: var(--white);
}
.page-faq__support::before {
  content: '';
  position: absolute;
  right: -10%;
  top: -24%;
  width: 38%;
  height: 148%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 100%);
  transform: skewX(-16deg);
  z-index: 0;
}
.page-faq__support > * {
  position: relative;
  z-index: 1;
}
.page-faq__support-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  max-width: 560px;
}
.page-faq__support-kicker {
  margin: 0;
  color: var(--highlighter);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.page-faq__support-head {
  margin: 0;
  font-family: var(--font-title);
  font-size: 1.3rem;
  font-weight: 800;
  line-height: 1.4;
}
.page-faq__support-lead {
  margin: 0;
  color: rgba(255, 255, 255, 0.76);
  line-height: 1.75;
}
.page-faq__support .btn--ghost {
  border-color: rgba(255, 255, 255, 0.55);
  color: var(--white);
}
.page-faq__support .btn--ghost:hover {
  background: var(--white);
  color: var(--graphite);
}
.page-faq__support-btn {
  margin-top: 8px;
}
.page-faq__support-figure {
  margin: 0;
  max-width: 320px;
}
.page-faq__support-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

/* 桌面布局 */
@media (min-width: 960px) {
  .page-faq__hero {
    padding: 56px 48px 88px;
  }
  .page-faq__hero h1 {
    max-width: 780px;
  }

  .page-faq__layout {
    display: grid;
    grid-template-columns: 232px 48px minmax(0, 1fr);
    padding: 0 24px;
  }

  .page-faq__index {
    position: sticky;
    top: 36px;
    align-self: start;
    padding: 40px 24px 32px 0;
    background: transparent;
  }
  .page-faq__index-kicker {
    display: block;
    margin: 0 0 10px;
    color: var(--primary-deep);
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  .page-faq__index-list {
    display: block;
    margin: 0;
    padding: 0;
    overflow: visible;
  }
  .page-faq__index-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 13px 8px;
    border-radius: 0;
    background: transparent;
    color: var(--shadow);
    font-size: 0.96rem;
    border-bottom: 1px solid rgba(58, 61, 66, 0.35);
  }
  .page-faq__index-link:hover {
    background: transparent;
    color: var(--primary);
    transform: translateX(4px);
  }
  .page-faq__index-no {
    flex: 0 0 30px;
    font-size: 1.05rem;
    color: var(--primary-deep);
  }
  .page-faq__index-figure {
    display: block;
    margin: 32px 0 0;
  }
  .page-faq__index-figure img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    transform: rotate(-2deg);
    transition: transform var(--ts);
  }
  .page-faq__index-figure img:hover {
    transform: rotate(0deg) scale(1.02);
  }

  .page-faq__rail {
    display: block;
    position: relative;
  }
  .page-faq__rail::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 16px;
    bottom: 16px;
    width: 1px;
    background: linear-gradient(180deg, transparent, var(--line) 5%, var(--line) 95%, transparent);
  }
  .page-faq__rail::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 150px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--light-gray);
    transform: translateX(-50%);
    box-shadow: 0 340px 0 -2px var(--primary-deep), 0 680px 0 -2px var(--primary);
  }

  .page-faq__content {
    padding: 0 32px 80px 0;
  }

  .page-faq__group {
    padding: 56px 0 16px;
  }

  .page-faq .faq-item__num {
    flex-basis: 48px;
    font-size: 2rem;
  }
  .page-faq .faq-item__q {
    font-size: 1.12rem;
  }
  .page-faq .faq-item__inner {
    padding-left: 72px;
  }

  .page-faq__support {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
    padding: 40px 48px;
  }
  .page-faq__support-text {
    flex: 1;
  }
  .page-faq__support-figure {
    flex: 0 0 280px;
  }
}