.page-faq {
  --faq-rail-width: 280px;
  --faq-gap: 14px;
  overflow-x: clip;
}

/* ===== Hero 区 ===== */
.page-faq .faq-hero {
  position: relative;
  padding: 40px 0 24px;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -100px;
  width: 520px;
  height: 420px;
  background: linear-gradient(160deg, rgba(0, 180, 255, 0.22), rgba(0, 180, 255, 0) 65%);
  transform: rotate(14deg);
  border-radius: 40px;
  pointer-events: none;
  z-index: 0;
}

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

.page-faq .faq-breadcrumb-sep {
  margin: 0 8px;
  color: var(--c-gray);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 28px;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: center;
}

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

.page-faq .faq-hero__content .index-label {
  margin-bottom: 10px;
}

.page-faq .faq-hero__title {
  margin: 18px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(36px, 6vw, 60px);
  line-height: 1.08;
  letter-spacing: 0.01em;
  font-weight: 800;
  color: var(--c-white);
}

.page-faq .faq-hero__title-accent {
  display: inline-block;
  margin-left: 10px;
  padding: 0 16px 5px 12px;
  color: var(--c-bg);
  background: var(--c-orange);
  clip-path: polygon(0 0, 100% 0, calc(100% - 12px) 100%, 0 100%);
  vertical-align: text-bottom;
}

.page-faq .faq-hero__lead {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.06em;
  color: var(--c-blue);
}

.page-faq .faq-hero__desc {
  max-width: 58ch;
  margin: 0 0 24px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-gray);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-hero__media {
  position: relative;
  background: var(--c-panel);
  border: 1px solid var(--stroke);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

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

.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 58%, rgba(0, 180, 255, 0.14));
  pointer-events: none;
}

/* ===== FAQ 布局 ===== */
.page-faq .faq-layout {
  padding: 48px 0 80px;
}

.page-faq .faq-layout__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

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

/* ===== 左侧导航 ===== */
.page-faq .faq-rail__label {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-gray);
}

.page-faq .faq-rail__nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 28px;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  color: var(--c-gray);
  text-decoration: none;
  border-left: 3px solid transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--c-white);
  background: var(--c-panel);
  border-left-color: var(--c-blue);
}

.page-faq .faq-rail__num {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-blue);
  opacity: 0.8;
}

.page-faq .faq-rail__aside {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--stroke);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-faq .faq-mini-stat {
  padding: 16px 18px;
  background: var(--c-panel);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
}

.page-faq .faq-mini-stat__num {
  display: block;
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 800;
  line-height: 1;
  color: var(--c-orange);
}

.page-faq .faq-mini-stat__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--c-gray);
}

.page-faq .faq-rail__card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  padding: 16px 18px;
  background: linear-gradient(135deg, rgba(0, 180, 255, 0.14), rgba(0, 180, 255, 0.03));
  border: 1px solid rgba(0, 180, 255, 0.22);
  border-radius: var(--radius);
  color: var(--c-white);
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-rail__card:hover,
.page-faq .faq-rail__card:focus-visible {
  border-color: var(--c-blue);
  transform: translateY(-2px);
}

.page-faq .faq-rail__card-title {
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-gray);
}

.page-faq .faq-rail__card-arrow {
  font-size: 16px;
  color: var(--c-blue);
}

/* ===== 问答分组 ===== */
.page-faq .faq-group {
  margin-bottom: 48px;
  scroll-margin-top: calc(var(--header-h) + 32px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: center;
  gap: var(--faq-gap);
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--stroke);
}

.page-faq .faq-group__index {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  line-height: 1;
  color: var(--c-orange);
  background: rgba(255, 106, 0, 0.12);
  padding: 6px 12px;
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  white-space: nowrap;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--c-white);
}

.page-faq .faq-group__count {
  margin-left: auto;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-gray);
  white-space: nowrap;
}

.page-faq .faq-group__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.page-faq .faq-group__figure {
  margin: 0;
  background: var(--c-panel);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.page-faq .faq-group__figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--c-gray);
  border-top: 1px solid var(--stroke);
}

/* ===== 手风琴条目 ===== */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-item {
  background: var(--c-panel);
  border: 1px solid var(--stroke);
  border-left: 3px solid transparent;
  border-radius: var(--radius);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-faq .faq-item:hover {
  border-color: rgba(170, 180, 192, 0.32);
}

.page-faq .faq-item[open] {
  border-left-color: var(--c-blue);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-item__q {
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--faq-gap);
  padding: 20px 22px;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-white);
  transition: color 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

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

.page-faq .faq-item__q::marker {
  content: "";
  list-style: none;
}

.page-faq .faq-item__q:hover {
  color: var(--c-blue);
}

.page-faq .faq-item__q:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--c-blue);
  border-radius: var(--radius);
}

.page-faq .faq-item__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  opacity: 0.92;
}

.page-faq .faq-item__q-text {
  flex: 1;
  min-width: 0;
}

.page-faq .faq-item__indicator {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--stroke);
  border-radius: 50%;
  color: var(--c-blue);
  font-size: 16px;
  font-weight: 400;
  line-height: 1;
  transition: transform 0.25s ease, background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.page-faq .faq-item__indicator::before {
  content: "+";
}

.page-faq .faq-item[open] .faq-item__indicator::before {
  content: "−";
}

.page-faq .faq-item[open] .faq-item__indicator {
  background: var(--c-blue);
  border-color: var(--c-blue);
  color: var(--c-bg);
}

.page-faq .faq-item__a {
  padding: 4px 22px 24px;
  color: var(--c-gray);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-item__a p {
  margin: 0 0 12px;
}

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

.page-faq .faq-item__a a {
  color: var(--c-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color 0.2s ease;
}

.page-faq .faq-item__a a:hover {
  color: var(--c-white);
}

/* ===== 联系列表 ===== */
.page-faq .faq-contact-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}

.page-faq .faq-contact-list li {
  position: relative;
  padding: 6px 0 6px 22px;
  color: var(--c-gray);
}

.page-faq .faq-contact-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 16px;
  width: 7px;
  height: 7px;
  background: var(--c-blue);
  transform: rotate(45deg);
}

/* ===== 联系 CTA ===== */
.page-faq .faq-cta {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 24px;
  padding: 20px 24px;
  text-decoration: none;
  background: linear-gradient(100deg, rgba(0, 180, 255, 0.16), rgba(0, 180, 255, 0.04));
  border: 1px solid rgba(0, 180, 255, 0.3);
  border-radius: var(--radius);
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-cta:hover,
.page-faq .faq-cta:focus-visible {
  transform: translateY(-2px);
  background: linear-gradient(100deg, rgba(0, 180, 255, 0.24), rgba(0, 180, 255, 0.08));
  border-color: var(--c-blue);
}

.page-faq .faq-cta__icon {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--c-blue);
  color: var(--c-bg);
  font-size: 20px;
  font-weight: 800;
  transition: transform 0.2s ease;
}

.page-faq .faq-cta:hover .faq-cta__icon,
.page-faq .faq-cta:focus-visible .faq-cta__icon {
  transform: translateX(3px);
}

.page-faq .faq-cta__body {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-cta__title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--c-white);
}

.page-faq .faq-cta__sub {
  font-size: 14px;
  color: var(--c-gray);
}

/* ===== 分组图标色彩节奏 ===== */
.page-faq .faq-group--bigscreen .faq-item__icon {
  color: var(--c-blue);
}

.page-faq .faq-group--filter .faq-item__icon {
  color: var(--c-orange);
}

.page-faq .faq-group--mobile .faq-item__icon {
  color: var(--c-green);
}

.page-faq .faq-group--data .faq-item__icon {
  color: var(--c-purple);
}

.page-faq .faq-group--contact .faq-item__icon {
  color: var(--c-yellow);
}

/* ===== 桌面增强 ===== */
@media (min-width: 720px) {
  .page-faq .faq-group__title {
    font-size: 30px;
  }

  .page-faq .faq-item__q {
    font-size: 17px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-group__split {
    grid-template-columns: minmax(0, 1fr) 240px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 56px 0 32px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 480px);
    gap: 56px;
  }

  .page-faq .faq-layout__grid {
    grid-template-columns: var(--faq-rail-width) minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-rail__inner {
    position: sticky;
    top: calc(var(--header-h) + 32px);
  }
}