.page-faq {
  --faq-index-w: 210px;
  --faq-hero-pad: clamp(2.5rem, 7vw, 5.5rem);
  --faq-panel-bg: var(--wb-ink-800);
  background: var(--wb-ink-950);
  color: var(--wb-paper-100);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: var(--faq-hero-pad) 0 clamp(1.75rem, 4vw, 3rem);
  border-bottom: 1px solid var(--wb-hairline);
  background:
    radial-gradient(115% 90% at 86% 0%, rgba(201, 162, 74, 0.10), transparent 58%),
    linear-gradient(180deg, var(--wb-ink-800) 0%, var(--wb-ink-950) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--wb-hairline) 1px, transparent 1px);
  background-size: 100% 68px;
  opacity: 0.45;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .wb-crumbs {
  font-size: 0.8rem;
  color: var(--wb-muted);
  margin-bottom: 1.75rem;
}

.page-faq .faq-hero .wb-crumbs a {
  color: var(--wb-slate-300);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.12s var(--wb-ease), border-color 0.12s var(--wb-ease);
}

.page-faq .faq-hero .wb-crumbs a:hover {
  color: var(--wb-gold-200);
  border-bottom-color: var(--wb-gold-500);
}

.page-faq .faq-hero .wb-crumbs span[aria-hidden] {
  padding: 0 0.45rem;
  color: var(--wb-ink-600);
}

.page-faq .faq-hero__title {
  margin: 0.5rem 0 0;
  font-size: clamp(2rem, 6.2vw, 4rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--wb-white);
  text-align: left;
}

.page-faq .faq-hero__lead {
  max-width: 62ch;
  margin-top: clamp(1rem, 2.5vw, 1.6rem);
  color: var(--wb-slate-300);
  line-height: 1.75;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1.5rem, 5vw, 3.5rem);
  list-style: none;
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 0;
  padding: clamp(1rem, 2.5vw, 1.35rem) 0 0;
  border-top: 1px solid var(--wb-hairline);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.page-faq .faq-stat__num {
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 700;
  color: var(--wb-gold-500);
  letter-spacing: 0.01em;
}

.page-faq .faq-stat__k {
  font-size: 0.82rem;
  color: var(--wb-muted);
  letter-spacing: 0.04em;
}

/* ---------- 首屏下方分支图 ---------- */
.page-faq .faq-branch {
  border-bottom: 1px solid var(--wb-hairline);
  padding-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-faq .faq-branch__figure {
  margin: 0 auto 0 0;
  max-width: 980px;
}

.page-faq .faq-branch__figure img,
.page-faq .faq-group__figure img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border: 1px solid var(--wb-hairline);
  background: var(--wb-ink-800);
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  padding-block: clamp(1.75rem, 4.5vw, 3rem) clamp(3rem, 8vw, 5.5rem);
}

/* 左栏索引：窄屏为横向条带 */
.page-faq .faq-index {
  min-width: 0;
}

.page-faq .faq-index__title {
  font-family: var(--wb-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--wb-gold-500);
  margin: 0 0 0.75rem;
}

.page-faq .faq-index__list {
  display: flex;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0.2rem 0;
  overflow-x: auto;
  border-top: 1px solid var(--wb-hairline);
  border-bottom: 1px solid var(--wb-hairline);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-index__link {
  display: block;
  white-space: nowrap;
  padding: 0.6rem 0.7rem;
  font-size: 0.88rem;
  color: var(--wb-slate-300);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.12s var(--wb-ease), border-color 0.12s var(--wb-ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--wb-gold-200);
  border-bottom-color: var(--wb-gold-500);
}

.page-faq .faq-index__note {
  margin: 1rem 0 0;
  font-size: 0.82rem;
  color: var(--wb-muted);
}

/* ---------- 问题组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 6.5rem;
  min-width: 0;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(2.5rem, 6vw, 4.25rem);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 0.9rem;
  padding-bottom: 0.85rem;
  margin-bottom: 1.35rem;
  border-bottom: 1px solid var(--wb-hairline-strong);
}

.page-faq .faq-group__no {
  font-family: var(--wb-font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--wb-gold-500);
  letter-spacing: 0.06em;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.25rem, 2.6vw, 1.65rem);
  color: var(--wb-white);
}

.page-faq .faq-group__meta {
  flex: 1 1 100%;
  margin: 0;
  font-family: var(--wb-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--wb-muted);
}

.page-faq .faq-group__figure {
  margin: 0 0 1.5rem;
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--wb-hairline);
  border-left: 3px solid var(--wb-ink-600);
  border-radius: var(--wb-radius);
  background: var(--faq-panel-bg);
  transition: border-color 0.12s var(--wb-ease), background-color 0.12s var(--wb-ease);
}

.page-faq .faq-item + .faq-item {
  margin-top: 0.65rem;
}

.page-faq .faq-item:hover {
  border-left-color: var(--wb-gold-500);
}

.page-faq .faq-item[open] {
  border-left-color: var(--wb-gold-500);
  background: linear-gradient(180deg, rgba(201, 162, 74, 0.06), transparent 40%), var(--faq-panel-bg);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  padding: 0.95rem 1.1rem;
  cursor: pointer;
  list-style: none;
  color: var(--wb-white);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.55;
  transition: color 0.12s var(--wb-ease);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--wb-font-mono);
  font-size: 1.05rem;
  line-height: 1;
  color: var(--wb-gold-500);
  transition: color 0.12s var(--wb-ease);
}

.page-faq .faq-item[open] > summary::after {
  content: "−";
  color: var(--wb-gold-200);
}

.page-faq .faq-item__no {
  flex: none;
  font-family: var(--wb-font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--wb-gold-500);
}

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

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--wb-gold-500);
  outline-offset: -2px;
}

.page-faq .faq-item__body {
  position: relative;
  padding: 0 1.1rem 1.15rem 3rem;
}

.page-faq .faq-item__body::before {
  content: "";
  position: absolute;
  left: 1.85rem;
  top: 0.15rem;
  bottom: 1.2rem;
  width: 1px;
  background: var(--wb-hairline-strong);
}

.page-faq .faq-step {
  margin: 0 0 0.6rem;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--wb-slate-300);
}

.page-faq .faq-step:last-of-type {
  margin-bottom: 0;
}

.page-faq .faq-step__k {
  display: block;
  font-family: var(--wb-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--wb-gold-500);
  margin-bottom: 0.1rem;
}

.page-faq .faq-copy {
  margin-top: 0.85rem;
  padding: 0.34rem 0.8rem;
  font-family: var(--wb-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--wb-slate-300);
  background: transparent;
  border: 1px solid var(--wb-hairline-strong);
  border-radius: var(--wb-radius);
  cursor: pointer;
  transition: color 0.12s var(--wb-ease), border-color 0.12s var(--wb-ease);
}

.page-faq .faq-copy:hover {
  color: var(--wb-gold-200);
  border-color: var(--wb-gold-500);
}

.page-faq .faq-copy:focus-visible {
  outline: 2px solid var(--wb-gold-500);
  outline-offset: 2px;
}

/* ---------- 人工协助 ---------- */
.page-faq .faq-group--contact .faq-group__head {
  border-bottom-color: var(--wb-gold-500);
}

.page-faq .faq-contact {
  display: grid;
  gap: 1px;
  background: var(--wb-hairline);
  border: 1px solid var(--wb-hairline);
}

.page-faq .faq-contact__col {
  background: var(--wb-ink-800);
  padding: clamp(1.15rem, 3vw, 1.75rem);
  min-width: 0;
}

.page-faq .faq-contact__h {
  margin: 0 0 0.9rem;
  font-size: 1rem;
  color: var(--wb-white);
}

.page-faq .faq-contact__list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-step;
}

.page-faq .faq-contact__list li {
  position: relative;
  counter-increment: faq-step;
  padding-left: 2.1rem;
  margin-bottom: 0.7rem;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--wb-slate-300);
}

.page-faq .faq-contact__list li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.15rem;
  font-family: var(--wb-font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--wb-gold-500);
}

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

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  padding: 0.6rem 0;
  border-bottom: 1px dashed var(--wb-hairline);
}

.page-faq .faq-contact__row:first-child {
  border-top: 1px dashed var(--wb-hairline);
}

.page-faq .faq-contact__row dt {
  flex: 0 0 5.5rem;
  font-family: var(--wb-font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--wb-muted);
  padding-top: 0.15rem;
}

.page-faq .faq-contact__row dd {
  margin: 0;
  font-size: 0.95rem;
  color: var(--wb-white);
  word-break: break-word;
}

.page-faq .faq-contact__tip {
  margin: 0.9rem 0 0;
  font-size: 0.86rem;
  line-height: 1.72;
  color: var(--wb-muted);
}

.page-faq .faq-contact__col--channels .wb-btn {
  margin-top: 1.2rem;
}

.page-faq .faq-contact__foot {
  margin: 1.5rem 0 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--wb-slate-300);
  padding-left: 0.9rem;
  border-left: 2px solid var(--wb-gold-500);
}

/* ---------- 悬停/焦点统一 ---------- */
.page-faq .wb-link {
  color: var(--wb-gold-200);
  text-decoration: none;
  border-bottom: 1px solid var(--wb-hairline-strong);
  transition: border-color 0.12s var(--wb-ease), color 0.12s var(--wb-ease);
}

.page-faq .wb-link:hover,
.page-faq .wb-link:focus-visible {
  border-bottom-color: var(--wb-gold-500);
  color: var(--wb-white);
}

/* ---------- 桌面：左索引右内容 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 4.5rem);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 6.5rem;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0 0 0 0.25rem;
    border-top: none;
    border-bottom: none;
    border-left: 1px solid var(--wb-hairline);
  }

  .page-faq .faq-index__link {
    position: relative;
    padding: 0.5rem 0.4rem 0.5rem 0.9rem;
    border-bottom: none;
    font-size: 0.9rem;
  }

  .page-faq .faq-index__link::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 50%;
    width: 3px;
    height: 0;
    background: var(--wb-gold-500);
    transform: translateY(-50%);
    transition: height 0.16s var(--wb-ease);
  }

  .page-faq .faq-index__link:hover::before,
  .page-faq .faq-index__link:focus-visible::before {
    height: 18px;
  }

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

  .page-faq .faq-group__meta {
    flex: 0 0 auto;
    margin-left: auto;
    align-self: center;
  }
}

@media (min-width: 1180px) {
  .page-faq {
    --faq-index-w: 240px;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-item__body {
    padding-left: 1.1rem;
  }

  .page-faq .faq-item__body::before {
    display: none;
  }

  .page-faq .faq-hero__stats {
    gap: 1.25rem 2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}