.page-faq {
  --faq-index-w: 15.5rem;
  --faq-nav-active: rgba(53, 240, 160, 0.12);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2.25rem, 5vw, 3.5rem) 0 clamp(2.25rem, 5vw, 3.25rem);
  border-bottom: 1px solid var(--grid);
  background:
    radial-gradient(120% 150% at 84% -18%, rgba(47, 125, 255, 0.3), transparent 60%),
    radial-gradient(70% 100% at -6% 108%, rgba(53, 240, 160, 0.12), transparent 62%),
    linear-gradient(180deg, var(--blue-deep), var(--ink) 74%);
}

.page-faq .faq-eyebrow {
  margin: 0 0 0.9rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-faq .faq-hero h1 {
  max-width: 20ch;
  margin: 0 0 1.1rem;
  font-size: clamp(1.95rem, 5vw, 3.3rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text);
}

.page-faq .faq-lede {
  max-width: 60ch;
  margin: 0 0 clamp(1.6rem, 3vw, 2.2rem);
  font-size: clamp(0.9375rem, 1.6vw, 1.0625rem);
  line-height: 1.85;
  color: var(--ice);
}

.page-faq .faq-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  margin: 0;
  padding: 1px;
  list-style: none;
  border-radius: var(--radius-md);
  background: var(--grid);
  overflow: hidden;
}

.page-faq .faq-stats li {
  flex: 1 1 9.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.9rem 1.05rem;
  background: rgba(13, 19, 28, 0.82);
}

.page-faq .faq-stat-num {
  font-family: var(--mono);
  font-size: 1.3rem;
  letter-spacing: 0.02em;
  color: var(--ice);
}

.page-faq .faq-stat-label {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  padding-top: clamp(2rem, 4vw, 3.25rem);
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.75rem;
}

.page-faq .faq-index,
.page-faq .faq-main {
  min-width: 0;
}

/* ---------- 问题索引 ---------- */
.page-faq .faq-nav-label {
  margin: 0 0 0.7rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--grid);
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-nav-link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--grid);
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  line-height: 1.4;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .faq-nav-link:hover {
  color: var(--text);
  border-color: rgba(47, 125, 255, 0.6);
}

.page-faq .faq-nav-link:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.page-faq .faq-nav-link[aria-current="true"] {
  color: var(--text);
  border-color: var(--neon);
  background: var(--faq-nav-active);
}

.page-faq .faq-nav-num {
  font-family: var(--mono);
  font-size: 0.6875rem;
  color: var(--blue);
}

.page-faq .faq-nav-link[aria-current="true"] .faq-nav-num {
  color: var(--neon);
}

/* ---------- 筛选 ---------- */
.page-faq .faq-filter {
  position: relative;
  display: flex;
  align-items: center;
  margin-bottom: 1.6rem;
  padding: 0.4rem 0.9rem 0.4rem 2.6rem;
  border: 1px solid var(--grid);
  border-radius: var(--radius-md);
  background: var(--panel);
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-faq .faq-filter:focus-within {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(47, 125, 255, 0.18);
}

.page-faq .faq-filter > svg {
  position: absolute;
  left: 0.9rem;
  top: 50%;
  width: 1rem;
  height: 1rem;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}

.page-faq .faq-filter input {
  flex: 1 1 auto;
  width: 100%;
  min-width: 0;
  padding: 0.5rem 0;
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 0.9375rem;
  color: var(--text);
}

.page-faq .faq-filter input:focus {
  outline: none;
}

.page-faq .faq-filter input::placeholder {
  color: var(--muted);
}

/* ---------- 分区 ---------- */
.page-faq .faq-section {
  margin-bottom: clamp(2.25rem, 4vw, 3rem);
  scroll-margin-top: calc(var(--header-h) + 1.25rem);
}

.page-faq .faq-section-head {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--grid);
}

.page-faq .faq-section-num {
  flex: none;
  font-family: var(--mono);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--blue);
}

.page-faq .faq-section-title {
  margin: 0;
  font-size: clamp(1.2rem, 2.2vw, 1.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .faq-section-lead {
  margin: 0.8rem 0 1.1rem;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 1.2rem;
}

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

.page-faq .faq-figure--square .figure-media {
  max-width: 22rem;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  position: relative;
  margin-bottom: 0.6rem;
  border: 1px solid var(--grid);
  border-radius: var(--radius-md);
  background: var(--panel-deep);
  overflow: hidden;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon), var(--blue));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.32s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(53, 240, 160, 0.5);
}

.page-faq .faq-item[open] {
  border-color: rgba(47, 125, 255, 0.65);
  background: var(--panel);
}

.page-faq .faq-item[open]::before {
  transform: scaleX(1);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 0.95rem 1rem;
  cursor: pointer;
  list-style: none;
  color: var(--text);
}

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

.page-faq .faq-q:hover {
  color: var(--ice);
}

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

.page-faq .faq-qnum {
  flex: none;
  padding-top: 0.3rem;
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--blue);
}

.page-faq .faq-qtext {
  flex: 1 1 auto;
  font-size: clamp(0.9375rem, 1.6vw, 1.0625rem);
  font-weight: 600;
  line-height: 1.55;
}

.page-faq .faq-audience {
  flex: none;
  margin-top: 0.1rem;
  padding: 0.16rem 0.5rem;
  border-radius: var(--radius-pill);
  background: var(--ice);
  color: #08182b;
  font-size: 0.6875rem;
  font-weight: 600;
  line-height: 1.6;
  white-space: nowrap;
}

.page-faq .faq-caret {
  flex: none;
  width: 0.95rem;
  height: 0.95rem;
  margin-top: 0.35rem;
  color: var(--muted);
  transition: transform 0.25s var(--ease), color 0.25s var(--ease);
}

.page-faq .faq-item[open] .faq-caret {
  transform: rotate(90deg);
  color: var(--neon);
}

.page-faq .faq-a {
  padding: 0 1rem 1.05rem;
  font-size: 0.875rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-a p {
  margin: 0 0 0.7rem;
}

.page-faq .faq-a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-next {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-next:hover {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

.page-faq .faq-next:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.page-faq .faq-next svg {
  width: 0.85rem;
  height: 0.85rem;
}

/* ---------- 空结果 ---------- */
.page-faq .faq-empty {
  margin: 0 0 1.75rem;
  padding: 1.4rem 1.1rem;
  border: 1px dashed var(--grid);
  border-radius: var(--radius-md);
  text-align: center;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-empty[hidden] {
  display: none;
}

/* ---------- 联系收束 ---------- */
.page-faq .faq-help {
  margin-bottom: 0;
  padding-top: clamp(1.25rem, 2.5vw, 1.75rem);
  border-top: 1px solid var(--grid);
}

.page-faq .faq-help-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.1rem;
}

.page-faq .faq-help-card {
  position: relative;
  padding: 1.05rem 1.1rem 1.1rem;
  border: 1px solid var(--grid);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(47, 125, 255, 0.1), transparent 62%), var(--panel-deep);
  overflow: hidden;
}

.page-faq .faq-help-card--phone {
  background: linear-gradient(160deg, rgba(53, 240, 160, 0.1), transparent 62%), var(--panel-deep);
}

.page-faq .faq-help-label {
  margin: 0 0 0.55rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .faq-help-value {
  margin: 0 0 0.5rem;
  font-family: var(--mono);
  font-size: clamp(0.9375rem, 2.4vw, 1.0625rem);
  letter-spacing: 0.01em;
  color: var(--text);
  word-break: break-word;
}

.page-faq .faq-help-note {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-help-tip {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-help-tip a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 125, 255, 0.45);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-help-tip a:hover {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

/* ---------- 中等屏 ---------- */
@media (min-width: 40rem) {
  .page-faq .faq-help-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 桌面双栏 ---------- */
@media (min-width: 62rem) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 1.25rem);
  }

  .page-faq .faq-nav-list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-faq .faq-nav-link {
    display: flex;
    padding: 0.6rem 0.85rem;
    border: 0;
    border-left: 2px solid var(--grid);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
  }

  .page-faq .faq-nav-link[aria-current="true"] {
    background: linear-gradient(90deg, var(--faq-nav-active), transparent 88%);
  }

  .page-faq .faq-q {
    align-items: center;
    padding: 1.05rem 1.25rem;
  }

  .page-faq .faq-qnum,
  .page-faq .faq-audience,
  .page-faq .faq-caret {
    margin-top: 0;
  }

  .page-faq .faq-a {
    padding: 0 1.25rem 1.25rem 3.75rem;
    font-size: 0.9375rem;
  }
}

@media (max-width: 30rem) {
  .page-faq .faq-audience {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item::before,
  .page-faq .faq-caret,
  .page-faq .faq-nav-link,
  .page-faq .faq-next {
    transition: none;
  }

  .page-faq .faq-item[open] .faq-caret {
    transform: none;
  }
}