.page-faq {
  background: var(--ink-900);
  color: var(--paper);
  padding-bottom: var(--space-7);
}

/* ---------- 顶部主题带 ---------- */
.page-faq .faq-top {
  padding: var(--space-5) 0 var(--space-6);
  border-bottom: 1px solid var(--line-soft);
  background-image:
    linear-gradient(rgba(42, 74, 62, 0.26) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 74, 62, 0.26) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: -1px -1px;
}

.page-faq .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0 0 var(--space-5);
  padding: 0;
  list-style: none;
}

.page-faq .breadcrumbs li {
  font-size: var(--fs-label);
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-faq .breadcrumbs li + li::before {
  content: "/";
  margin-right: 0.45rem;
  color: var(--line);
}

.page-faq .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

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

.page-faq .breadcrumbs li[aria-current="page"] {
  color: var(--paper-86);
}

.page-faq .faq-head {
  display: grid;
  gap: var(--space-5);
  align-items: end;
}

.page-faq .faq-head-main .eyebrow {
  color: var(--teal);
  margin: 0 0 var(--space-3);
}

.page-faq h1 {
  margin: 0;
  font-size: var(--fs-display);
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 16ch;
}

.page-faq .faq-lede {
  margin: var(--space-4) 0 0;
  max-width: 58ch;
  font-size: 1.0625rem;
  line-height: var(--lh-body);
  color: var(--paper-86);
}

.page-faq .faq-head-aside {
  position: relative;
  padding: var(--space-4);
  border: 1px solid var(--line);
  background: var(--ink-800);
  display: grid;
  gap: 0.6rem;
  align-content: start;
}

.page-faq .faq-head-aside::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 56px;
  height: 3px;
  background: var(--cyan);
}

.page-faq .faq-head-aside .tag {
  justify-self: start;
  color: var(--amber);
  border-color: rgba(255, 181, 71, 0.45);
}

.page-faq .faq-aside-value {
  margin: 0;
  font-size: 1.5rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .faq-aside-note {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-head-aside .btn {
  justify-self: start;
  margin-top: 0.35rem;
}

.page-faq .faq-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.75rem;
  margin: var(--space-5) 0 0;
  padding: var(--space-3) 0 0;
  border-top: 1px dashed var(--line-soft);
  list-style: none;
  font-size: var(--fs-small);
  color: var(--mist);
}

.page-faq .faq-meta .mono-num {
  color: var(--cyan);
  margin-right: 0.3rem;
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: var(--space-5);
  padding-top: var(--space-6);
}

.page-faq .faq-rail {
  align-self: start;
  min-width: 0;
}

.page-faq .faq-rail-title {
  margin: 0 0 var(--space-2);
  font-size: var(--fs-label);
  letter-spacing: 0.18em;
  color: var(--teal);
}

.page-faq .faq-index {
  display: flex;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  border-bottom: 1px solid var(--line-soft);
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index li {
  flex: 0 0 auto;
}

.page-faq .faq-index a {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.7rem 0.9rem;
  white-space: nowrap;
  font-size: var(--fs-small);
  color: var(--mist);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.page-faq .faq-index a .mono-num {
  font-size: var(--fs-label);
  color: var(--line);
  transition: color 0.15s ease;
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  color: var(--paper);
  background: rgba(72, 242, 200, 0.06);
}

.page-faq .faq-index a.is-active {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  background: var(--cyan-soft);
}

.page-faq .faq-index a.is-active .mono-num {
  color: var(--cyan);
}

.page-faq .faq-rail-foot {
  display: none;
  margin: var(--space-3) 0 0;
  font-size: var(--fs-label);
  line-height: 1.7;
  color: var(--mist);
}

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

/* ---------- 问答组 ---------- */
.page-faq .faq-group {
  padding-top: var(--space-4);
  margin-bottom: var(--space-6);
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}

.page-faq .faq-group-num {
  flex: none;
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  color: var(--teal);
}

.page-faq .faq-group-title {
  margin: 0;
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group-note {
  margin: 0 0 var(--space-4);
  max-width: 56ch;
  font-size: var(--fs-small);
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  border-bottom: 1px dashed var(--line-soft);
}

.page-faq .faq-item:first-of-type {
  border-top: 1px dashed var(--line-soft);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: 1.05rem 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .faq-item-num {
  flex: none;
  padding-top: 0.32rem;
  font-size: var(--fs-label);
  letter-spacing: 0.08em;
  color: var(--teal);
  transition: color 0.15s ease;
}

.page-faq .faq-q {
  flex: 1 1 auto;
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
  transition: color 0.15s ease;
}

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

.page-faq .faq-mark {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 0.5rem;
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
}

.page-faq .faq-mark::before {
  top: 50%;
  left: 0;
  right: 0;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-faq .faq-mark::after {
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1.5px;
  transform: translateX(-50%);
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.page-faq .faq-item[open] .faq-item-num {
  color: var(--amber);
}

.page-faq .faq-item[open] .faq-mark::after {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-a {
  margin: 0;
  padding: 0 0 1.3rem;
  max-width: 62ch;
  font-size: 0.975rem;
  line-height: var(--lh-body);
  color: var(--paper-86);
}

.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

/* ---------- 步骤条 ---------- */
.page-faq .step-strip {
  display: grid;
  gap: 1px;
  margin: 0 0 1.3rem;
  border: 1px solid var(--line);
  background: var(--line-soft);
}

.page-faq .step {
  padding: var(--space-4);
  background: var(--ink-800);
}

.page-faq .step-num {
  display: block;
  font-size: var(--fs-label);
  letter-spacing: 0.16em;
  color: var(--teal);
}

.page-faq .step-title {
  margin: 0.55rem 0 0.35rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--paper);
}

.page-faq .step-text {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: var(--space-4) 0 var(--space-5);
}

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

.page-faq .faq-media {
  border: 1px solid var(--line);
  aspect-ratio: 3 / 2;
  background: var(--ink-700);
}

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

.page-faq .media-caption {
  margin-top: 0.7rem;
  font-size: var(--fs-label);
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-support {
  display: grid;
  gap: var(--space-4);
  margin: var(--space-4) 0 var(--space-5);
}

.page-faq .faq-contact {
  padding: var(--space-4);
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-faq .faq-contact-list {
  display: grid;
  gap: 0.95rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact-list li {
  display: grid;
  gap: 0.2rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid rgba(42, 74, 62, 0.5);
}

.page-faq .faq-contact-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-contact-label {
  font-size: var(--fs-label);
  letter-spacing: 0.16em;
  color: var(--teal);
}

.page-faq .faq-contact-value {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--paper);
  text-decoration: none;
  word-break: break-word;
}

.page-faq a.faq-contact-value:hover,
.page-faq a.faq-contact-value:focus-visible {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-contact-note {
  margin: var(--space-4) 0 0;
  padding-top: var(--space-3);
  border-top: 1px dashed var(--line-soft);
  font-size: var(--fs-small);
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-contact-note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-head {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: var(--space-6);
  }

  .page-faq .faq-layout {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: var(--space-6);
    padding-top: var(--space-7);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }

  .page-faq .faq-rail-title {
    margin-bottom: var(--space-3);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--line);
  }

  .page-faq .faq-index {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-index a {
    padding: 0.62rem 0 0.62rem 0.9rem;
    margin-left: -1px;
    border-bottom: 0;
    border-left: 2px solid transparent;
  }

  .page-faq .faq-index a.is-active {
    border-left-color: var(--cyan);
    border-bottom-color: transparent;
  }

  .page-faq .faq-rail-foot {
    display: block;
    padding-left: 0.95rem;
    border-left: 1px solid var(--line);
  }

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

  .page-faq .faq-support {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-a {
    padding-left: 2.6rem;
  }

  .page-faq h1 {
    max-width: 14ch;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-layout {
    grid-template-columns: 280px minmax(0, 1fr);
  }

  .page-faq .faq-q {
    font-size: 1.125rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-mark::after,
  .page-faq .faq-q,
  .page-faq .faq-item-num,
  .page-faq .faq-index a {
    transition: none;
  }
}