.page-faq {
  --faq-card: #FFFDF8;
  --faq-line: rgba(20, 32, 43, 0.14);
  --faq-line-strong: rgba(20, 168, 154, 0.52);
  --faq-soft: rgba(20, 32, 43, 0.62);
  --faq-mono-bg: rgba(20, 32, 43, 0.05);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.6rem, 4vw, 2.4rem) 0 clamp(2.6rem, 5vw, 4.2rem);
  background:
    radial-gradient(circle at 82% 12%, rgba(47, 230, 200, 0.16), transparent 58%),
    linear-gradient(158deg, var(--ink-950) 0%, var(--ink-900) 58%, var(--ink-800) 100%);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(47, 230, 200, 0.5), transparent);
  pointer-events: none;
}

.page-faq .faq-crumbs {
  margin-bottom: clamp(1.6rem, 3vw, 2.4rem);
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: clamp(1.8rem, 4vw, 3rem);
  align-items: center;
}

.page-faq .faq-hero-copy .eyebrow {
  color: var(--cyan-400);
}

.page-faq .faq-hero-copy h1 {
  margin: 0.7rem 0 1rem;
  font-family: var(--font-head);
  font-size: var(--fs-h1);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.page-faq .faq-hero-copy .lede {
  color: var(--text-muted);
  font-size: clamp(1rem, 1.6vw, 1.06rem);
  line-height: 1.8;
}

.page-faq .faq-hero-media {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--ink-800);
}

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

.page-faq .faq-hero-meta {
  margin-top: 1.4rem;
  color: var(--text-muted);
  gap: 0.4rem 1.4rem;
  flex-wrap: wrap;
  display: flex;
}

/* ---------- 搜索 ---------- */
.page-faq .faq-search {
  display: grid;
  gap: 0.45rem;
  margin-top: 1.6rem;
  max-width: 32rem;
}

.page-faq .faq-search-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-faq .faq-search-input {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-primary);
  background: rgba(7, 19, 31, 0.72);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .faq-search-input::placeholder {
  color: #7C8E9E;
}

.page-faq .faq-search-input:focus {
  outline: none;
  border-color: var(--cyan-400);
  box-shadow: 0 0 0 3px rgba(47, 230, 200, 0.18);
}

/* ---------- 正文区 ---------- */
.page-faq .faq-main {
  padding: clamp(2.4rem, 5vw, 4.2rem) 0 clamp(3rem, 6vw, 5rem);
  background: var(--paper);
  color: var(--text-on-paper);
}

.page-faq .faq-layout {
  display: grid;
  gap: clamp(1.6rem, 3.5vw, 2.6rem);
}

.page-faq .faq-rail-title {
  color: var(--cyan-600);
  margin-bottom: 0.7rem;
}

.page-faq .faq-rail-list {
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0 0 0.35rem;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-rail-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.8rem;
  white-space: nowrap;
  font-size: 0.875rem;
  color: var(--text-on-paper);
  text-decoration: none;
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-sm);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-rail-link .mono {
  color: var(--cyan-600);
  font-size: 0.75rem;
}

.page-faq .faq-rail-link:hover,
.page-faq .faq-rail-link:focus-visible {
  border-color: var(--faq-line-strong);
  color: var(--cyan-600);
  background: #FFFFFF;
}

.page-faq .faq-rail-note {
  margin-top: 0.8rem;
  padding: 0.75rem 0.85rem;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--faq-soft);
  background: var(--faq-mono-bg);
  border-left: 2px solid var(--amber-400);
}

/* ---------- 分类与问题卡 ---------- */
.page-faq .faq-cat {
  scroll-margin-top: 1.25rem;
  margin-bottom: clamp(2.2rem, 4.5vw, 3.2rem);
}

.page-faq .faq-cat-last {
  margin-bottom: 0;
}

.page-faq .faq-cat-head {
  display: grid;
  gap: 0.35rem;
  padding-bottom: 0.85rem;
  margin-bottom: 1.1rem;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-cat-index {
  color: var(--cyan-600);
  letter-spacing: 0.16em;
}

.page-faq .faq-cat-head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-on-paper);
}

.page-faq .faq-cat-head p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--faq-soft);
}

.page-faq .faq-list {
  display: grid;
  gap: 0.55rem;
}

.page-faq .faq-item {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-sm);
  background: var(--faq-card);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--faq-line-strong);
  box-shadow: 0 1px 0 rgba(20, 32, 43, 0.04), 0 8px 18px -14px rgba(7, 19, 31, 0.45);
}

.page-faq .faq-q {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  width: 100%;
  padding: 0.95rem 1rem;
  text-align: left;
  background: none;
  border: 0;
  cursor: pointer;
  font-family: var(--font-head);
  font-size: clamp(0.95rem, 1.5vw, 1.02rem);
  font-weight: 600;
  line-height: 1.6;
  color: var(--text-on-paper);
}

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--cyan-600);
  outline-offset: -2px;
}

.page-faq .faq-q .drawer-sign {
  flex: none;
  padding: 0.2rem 0.42rem;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--ink-900);
  background: rgba(47, 230, 200, 0.28);
  border-radius: var(--radius-xs);
}

.page-faq .faq-q[aria-expanded="true"] {
  color: var(--cyan-600);
}

.page-faq .faq-a {
  padding: 0 1rem 1rem 1rem;
  border-top: 1px solid var(--faq-line);
  margin-top: 0;
}

.page-faq .faq-a p {
  margin: 0.9rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: #253544;
  max-width: 64ch;
}

.page-faq .faq-a a,
.page-faq .faq-more-note a {
  color: var(--cyan-600);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .faq-a a:hover,
.page-faq .faq-more-note a:hover {
  color: var(--ink-900);
}

/* ---------- 客服联系 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.6rem;
  padding: 1.4rem;
  background: var(--faq-mono-bg);
  border: 1px solid var(--faq-line);
  border-top: 3px solid var(--amber-400);
  border-radius: var(--radius-sm);
}

.page-faq .faq-contact-copy .eyebrow {
  color: var(--amber-600);
}

.page-faq .faq-contact-copy h3 {
  margin: 0.5rem 0 0.5rem;
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-on-paper);
}

.page-faq .faq-contact-copy > p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--faq-soft);
  max-width: 58ch;
}

.page-faq .faq-contact-list {
  display: grid;
  gap: 0.6rem;
  margin: 1.1rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.7rem;
  padding: 0.6rem 0.75rem;
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-xs);
}

.page-faq .faq-contact-label {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--cyan-600);
  flex: none;
}

.page-faq .faq-contact-value {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-on-paper);
  word-break: break-word;
}

.page-faq .faq-copy {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  padding: 0.28rem 0.6rem;
  color: var(--text-on-paper);
  background: transparent;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-copy:hover,
.page-faq .faq-copy:focus-visible {
  border-color: var(--cyan-600);
  color: var(--cyan-600);
}

.page-faq .faq-contact-media {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-xs);
  background: var(--paper-dim);
}

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

/* ---------- 更多帮助 ---------- */
.page-faq .faq-more-grid {
  gap: 0.8rem;
}

.page-faq .faq-more-card {
  display: grid;
  gap: 0.4rem;
  padding: 1.1rem 1.15rem 1.2rem;
  text-decoration: none;
  color: var(--text-on-paper);
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--faq-line);
  border-radius: var(--radius-xs);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .faq-more-card:hover,
.page-faq .faq-more-card:focus-visible {
  border-left-color: var(--cyan-600);
  transform: translateY(-2px);
  box-shadow: 0 12px 22px -18px rgba(7, 19, 31, 0.6);
}

.page-faq .faq-more-index {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--amber-600);
}

.page-faq .faq-more-card h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
}

.page-faq .faq-more-card p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--faq-soft);
}

.page-faq .faq-more-go {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--cyan-600);
}

.page-faq .faq-more-note {
  margin: 1.1rem 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--faq-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-contact {
    padding: 1.7rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }

  .page-faq .faq-more-grid {
    gap: 1rem;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
    gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 1.5rem;
    padding-right: 0.5rem;
  }

  .page-faq .faq-rail-list {
    display: grid;
    gap: 0.4rem;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail-link {
    white-space: normal;
    justify-content: flex-start;
  }

  .page-faq .faq-cat-head {
    grid-template-columns: auto minmax(0, 1fr);
    column-gap: 0.9rem;
    align-items: baseline;
  }

  .page-faq .faq-cat-index {
    grid-row: 1 / 3;
  }

  .page-faq .faq-cat-head p {
    grid-column: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-more-card:hover,
  .page-faq .faq-more-card:focus-visible {
    transform: none;
  }
}