.page-faq {
  --faq-bg: #0A2342;
  --faq-surface: rgba(18, 59, 94, 0.68);
  --faq-surface-solid: #123B5E;
  --faq-surface-hover: rgba(13, 59, 79, 0.88);
  --faq-border: rgba(212, 175, 55, 0.24);
  --faq-border-strong: rgba(212, 175, 55, 0.55);
  --faq-accent: #64FFDA;
  --faq-warm: #FF6B35;
  --faq-ink: #E5EAF0;
  --faq-muted: #9FB3C8;
  --faq-radius: 14px;
  color: var(--faq-ink);
  background:
    radial-gradient(ellipse at 12% 2%, rgba(100, 255, 218, 0.08), transparent 32%),
    radial-gradient(ellipse at 88% 22%, rgba(255, 107, 53, 0.05), transparent 24%),
    linear-gradient(180deg, var(--faq-bg), #07182E 100%);
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 22px var(--gutter) 0;
  font-size: 13px;
  color: var(--faq-muted);
}
.page-faq .breadcrumb a {
  color: var(--faq-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}
.page-faq .breadcrumb a:hover {
  color: var(--faq-accent);
}
.page-faq .breadcrumb__current {
  color: var(--faq-ink);
  font-weight: 500;
}

/* Hero */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: var(--sp-4) 0 var(--sp-2);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 48%;
  height: 100%;
  background: linear-gradient(125deg, transparent 0%, rgba(13, 59, 79, 0.55) 55%, rgba(61, 46, 109, 0.35) 100%);
  clip-path: polygon(14% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}
.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
  align-items: center;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(100, 255, 218, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(100, 255, 218, 0.03) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}
.page-faq .faq-hero .tag {
  display: inline-flex;
  align-items: center;
  margin-bottom: var(--sp-3);
  padding: 5px 12px;
  border: 1px solid rgba(100, 255, 218, 0.4);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--faq-accent);
  background: rgba(100, 255, 218, 0.08);
  text-transform: uppercase;
}
.page-faq .faq-hero .tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--faq-warm);
  margin-right: 8px;
  vertical-align: 2px;
  flex: 0 0 auto;
}
.page-faq .faq-hero h1 {
  margin: 0 0 var(--sp-3);
  font-size: clamp(28px, 0.9rem + 3vw, 46px);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.02em;
  max-width: 720px;
}
.page-faq .faq-hero__desc {
  margin: 0 0 var(--sp-4);
  font-size: 15px;
  line-height: 1.75;
  color: var(--faq-muted);
  max-width: 640px;
}
.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  max-width: 480px;
}
.page-faq .faq-hero__stats .stat {
  background: rgba(13, 59, 79, 0.58);
  border: 1px solid var(--faq-border);
  border-radius: var(--radius-sm);
  padding: 14px 8px 10px;
  text-align: center;
}
.page-faq .faq-hero__stats .stat__number {
  display: block;
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--faq-accent);
}
.page-faq .faq-hero__stats .stat__unit {
  font-size: 12px;
  margin-left: 2px;
  color: var(--faq-muted);
}
.page-faq .faq-hero__stats .stat__label {
  display: block;
  margin-top: 4px;
  font-size: 11px;
  color: var(--faq-muted);
}
.page-faq .faq-hero__media {
  position: relative;
  margin: 0;
}
.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--faq-border);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}
.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  inset: 14px -14px -14px 14px;
  border: 1px dashed rgba(100, 255, 218, 0.32);
  border-radius: var(--radius-lg);
  z-index: -1;
  pointer-events: none;
}
@media (min-width: 860px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: 1.05fr 0.95fr;
    gap: var(--sp-6);
  }
}

/* 专题分类导航卡片 */
.page-faq .faq-topics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: var(--sp-5);
  margin-bottom: var(--sp-3);
}
.page-faq .faq-topics__card {
  --tone: var(--faq-accent);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px 18px;
  border: 1px solid var(--faq-border);
  border-top: 3px solid var(--tone);
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, rgba(18, 59, 94, 0.75), rgba(10, 35, 66, 0.88));
  text-decoration: none;
  color: var(--faq-ink);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}
.page-faq .faq-topics__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.24);
}
.page-faq .faq-topics__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--tone);
}
.page-faq .faq-topics__label {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
}
.page-faq .faq-topics__card--entry { --tone: #64FFDA; }
.page-faq .faq-topics__card--data { --tone: #FF6B35; }
.page-faq .faq-topics__card--client { --tone: #D4AF37; }
.page-faq .faq-topics__card--subs { --tone: #3D2E6D; }
.page-faq .faq-topics__card--contact { --tone: #64FFDA; }
.page-faq .faq-topics__card--entry:hover { border-color: rgba(100, 255, 218, 0.6); }
.page-faq .faq-topics__card--data:hover { border-color: rgba(255, 107, 53, 0.6); }
.page-faq .faq-topics__card--client:hover { border-color: rgba(212, 175, 55, 0.6); }
.page-faq .faq-topics__card--subs:hover { border-color: rgba(61, 46, 109, 0.75); }
.page-faq .faq-topics__card--contact:hover { border-color: rgba(100, 255, 218, 0.6); }
@media (min-width: 720px) {
  .page-faq .faq-topics {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* 数据带 */
.page-faq .faq-metrics {
  margin-top: var(--sp-4);
}
.page-faq .faq-metrics__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--faq-border);
  border: 1px solid var(--faq-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.page-faq .faq-metrics .stat {
  padding: 20px 12px;
  text-align: center;
  background: rgba(10, 35, 66, 0.9);
}
.page-faq .faq-metrics .stat__number {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--faq-warm);
}
.page-faq .faq-metrics .stat__label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--faq-muted);
}
@media (min-width: 720px) {
  .page-faq .faq-metrics__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* 主体两栏布局 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
  margin: var(--sp-6) auto;
}
@media (min-width: 992px) {
  .page-faq .faq-layout {
    grid-template-columns: 280px minmax(0, 1fr);
    gap: var(--sp-6);
    align-items: start;
  }
}

/* 侧边栏 */
.page-faq .faq-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}
@media (min-width: 992px) {
  .page-faq .faq-sidebar {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}
.page-faq .faq-sidebar__panel {
  border: 1px solid var(--faq-border);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
  background: rgba(18, 59, 94, 0.55);
}
.page-faq .faq-sidebar__title {
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 700;
}
.page-faq .faq-sidebar__subtitle {
  margin: 0 0 var(--sp-3);
  font-size: 12px;
  color: var(--faq-muted);
}
.page-faq .faq-sidebar__nav {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px;
}
.page-faq .faq-sidebar__nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  color: var(--faq-muted);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.page-faq .faq-sidebar__nav a .mono {
  font-size: 12px;
  color: var(--c-gold);
}
.page-faq .faq-sidebar__nav a:hover {
  color: var(--faq-ink);
  background: rgba(100, 255, 218, 0.07);
  border-left-color: var(--faq-accent);
}
@media (min-width: 992px) {
  .page-faq .faq-sidebar__nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
  }
}
.page-faq .faq-sidebar__mark {
  border: 1px solid var(--faq-border);
  border-radius: var(--radius-md);
  padding: var(--sp-3);
  background: linear-gradient(145deg, rgba(13, 59, 79, 0.7), rgba(18, 59, 94, 0.45));
}
.page-faq .faq-sidebar__mark svg {
  display: block;
  width: 100%;
  max-width: 220px;
  height: auto;
  margin-inline: auto;
}
.page-faq .faq-sidebar__note {
  border: 1px dashed rgba(212, 175, 55, 0.45);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
  background: rgba(212, 175, 55, 0.04);
}
.page-faq .faq-sidebar__note p {
  margin: 0 0 var(--sp-3);
  font-size: 13px;
  line-height: 1.6;
  color: var(--faq-muted);
}

/* FAQ 区块 */
.page-faq .faq-section {
  scroll-margin-top: calc(var(--header-h) + 24px);
  margin-bottom: var(--sp-6);
}
.page-faq .faq-section:last-child {
  margin-bottom: 0;
}
.page-faq .faq-section__header {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
  padding-bottom: var(--sp-3);
  border-bottom: 2px solid var(--faq-border);
}
.page-faq .faq-section__index {
  font-family: var(--font-mono);
  font-size: 34px;
  line-height: 1;
  font-weight: 600;
  color: var(--faq-accent);
  text-shadow: 0 0 18px rgba(100, 255, 218, 0.3);
}
.page-faq .faq-section__header h2 {
  margin: 2px 0 4px;
  font-size: 24px;
  line-height: 1.2;
}
.page-faq .faq-section__header p {
  margin: 0;
  font-size: 13px;
  color: var(--faq-muted);
}

/* 手风琴 */
.page-faq .faq-accordion__item {
  margin-bottom: var(--sp-3);
  border: 1px solid var(--faq-border);
  border-radius: var(--radius-md);
  background: var(--faq-surface);
  overflow: hidden;
  transition: border-color 0.35s ease, background 0.35s ease, box-shadow 0.35s ease;
}
.page-faq .faq-accordion__item:hover,
.page-faq .faq-accordion__item[open] {
  border-color: rgba(100, 255, 218, 0.5);
  background: rgba(18, 59, 94, 0.84);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}
.page-faq .faq-accordion__item[open] {
  box-shadow: inset 3px 0 0 rgba(212, 175, 55, 0.6), 0 10px 30px rgba(0, 0, 0, 0.2);
}
.page-faq .faq-accordion__item summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 20px 52px 20px 20px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--faq-ink);
}
.page-faq .faq-accordion__item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-accordion__item summary::before {
  content: "";
  flex: 0 0 10px;
  width: 10px;
  height: 10px;
  background: var(--faq-accent);
  transform: rotate(45deg);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}
.page-faq .faq-accordion__item:hover summary::before,
.page-faq .faq-accordion__item[open] summary::before {
  box-shadow: 0 0 12px rgba(100, 255, 218, 0.55);
}
.page-faq .faq-accordion__item summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 300;
  color: var(--faq-accent);
  transition: transform 0.35s ease, color 0.35s ease;
}
.page-faq .faq-accordion__item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
  color: var(--faq-warm);
}
.page-faq .faq-accordion__body {
  padding: 0 20px 24px 48px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--faq-muted);
}
.page-faq .faq-accordion__body p {
  margin: 0;
}

/* 反馈区 */
.page-faq .faq-feedback {
  margin: var(--sp-4) auto var(--sp-7);
}
.page-faq .faq-feedback__card {
  display: grid;
  grid-template-columns: 1fr;
  border: 1px solid var(--faq-border-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(145deg, rgba(18, 59, 94, 0.84), rgba(10, 35, 66, 0.96));
}
.page-faq .faq-feedback__media {
  margin: 0;
  min-height: 200px;
  background: var(--faq-surface-solid);
}
.page-faq .faq-feedback__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-faq .faq-feedback__content {
  padding: var(--sp-5);
}
.page-faq .faq-feedback__content .tag {
  display: inline-flex;
  align-items: center;
  margin-bottom: var(--sp-3);
  padding: 5px 12px;
  border: 1px solid rgba(212, 175, 55, 0.5);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-gold);
  background: rgba(212, 175, 55, 0.08);
  text-transform: uppercase;
}
.page-faq .faq-feedback__content h2 {
  margin: 0 0 var(--sp-2);
  font-size: 26px;
  line-height: 1.2;
}
.page-faq .faq-feedback__content > p {
  margin: 0 0 var(--sp-4);
  font-size: 14px;
  line-height: 1.7;
  color: var(--faq-muted);
}
.page-faq .faq-feedback__contact {
  list-style: none;
  margin: 0 0 var(--sp-3);
  padding: 0;
}
.page-faq .faq-feedback__contact li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 2px;
  border-bottom: 1px dashed rgba(212, 175, 55, 0.25);
  font-size: 14px;
}
.page-faq .faq-feedback__contact li span {
  flex: 0 0 auto;
  color: var(--faq-muted);
}
.page-faq .faq-feedback__contact li strong {
  color: var(--faq-ink);
  text-align: right;
  word-break: break-all;
}
.page-faq .faq-feedback__trust {
  margin: 0 0 var(--sp-4) !important;
  padding: 12px 14px;
  border-left: 3px solid var(--c-gold);
  background: rgba(212, 175, 55, 0.06);
  font-size: 13px !important;
  line-height: 1.6 !important;
  color: var(--faq-muted) !important;
}
.page-faq .faq-feedback__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: var(--sp-3);
}
.page-faq .faq-feedback__sent {
  margin: 0;
  padding: 0 16px;
  max-height: 0;
  overflow: hidden;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: rgba(100, 255, 218, 0.08);
  color: var(--faq-accent);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.6;
  opacity: 0;
  transform: translateY(-6px);
  transition: max-height 0.35s ease, padding 0.35s ease, border-width 0.35s ease, opacity 0.35s ease, transform 0.35s ease;
}
.page-faq .faq-feedback__sent:target {
  margin-top: var(--sp-3);
  padding: 14px 16px;
  max-height: 96px;
  border-color: rgba(100, 255, 218, 0.45);
  opacity: 1;
  transform: translateY(0);
}
@media (min-width: 800px) {
  .page-faq .faq-feedback__card {
    grid-template-columns: 0.9fr 1.1fr;
  }
}