.page-faq {
  --faq-radius-lg: 12px;
  --faq-radius-md: 8px;
  --faq-accent-soft: rgba(57, 255, 20, 0.08);
  --faq-warning-soft: rgba(255, 107, 53, 0.07);
  position: relative;
  background: linear-gradient(180deg, var(--color-bg-start) 0%, rgba(19, 19, 19, 0.96) 45%, var(--color-bg-end) 100%);
  color: var(--color-text);
}

/* ===== 首屏 ===== */
.page-faq .faq-hero {
  position: relative;
  padding: 44px 0 56px;
  overflow: hidden;
  isolation: isolate;
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse at 78% 10%, rgba(57, 255, 20, 0.07), transparent 46%),
    radial-gradient(ellipse at 10% 85%, rgba(10, 25, 47, 0.82), transparent 70%);
  pointer-events: none;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(57, 255, 20, 0.35), transparent);
}
.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

.page-faq .faq-hero__visual {
  position: relative;
}
.page-faq .faq-hero__visual::before {
  content: "";
  position: absolute;
  inset: -10px -10px -10px -10px;
  border: 1px solid rgba(57, 255, 20, 0.28);
  border-radius: calc(var(--faq-radius-lg) + 4px);
  pointer-events: none;
  z-index: 1;
}
.page-faq .faq-hero__img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--faq-radius-md);
  filter: contrast(1.06);
}
.page-faq .faq-hero__chip {
  position: absolute;
  z-index: 3;
  background: rgba(10, 25, 47, 0.92);
  border: 1px solid var(--color-border);
  border-radius: var(--faq-radius-md);
  box-shadow: var(--shadow);
  padding: 12px 14px;
  backdrop-filter: blur(6px);
}
.page-faq .faq-hero__chip--top {
  top: 18px;
  right: 8px;
}
.page-faq .faq-hero__chip--bottom {
  left: 8px;
  bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.page-faq .faq-hero__chip-label {
  display: block;
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--color-text-secondary);
  letter-spacing: 0.08em;
}
.page-faq .faq-hero__chip-value {
  display: block;
  font-size: 22px;
  line-height: 1.1;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.02em;
}
.page-faq .faq-hero__chip-note {
  font-size: 13px;
  font-weight: 600;
  color: #E8E8E8;
}

.page-faq .faq-hero__content {
  max-width: 560px;
}
.page-faq .breadcrumbs {
  margin-bottom: 22px;
}
.page-faq .breadcrumbs__list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-faq .breadcrumbs__item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-secondary);
}
.page-faq .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  font-family: var(--font-data);
  opacity: 0.5;
}
.page-faq .breadcrumbs__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}
.page-faq .breadcrumbs__link:hover {
  color: var(--color-accent);
}

.page-faq .faq-hero__title {
  font-family: var(--font-headline);
  font-size: 44px;
  line-height: 1.02;
  letter-spacing: 0.03em;
  color: #F5F5F5;
  margin-top: 10px;
}
.page-faq .faq-hero__accent {
  color: var(--color-accent);
}
.page-faq .faq-hero__lead {
  margin-top: 16px;
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-text-secondary);
  border-left: 2px solid rgba(57, 255, 20, 0.35);
  padding-left: 16px;
}
.page-faq .faq-hero__status {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}
.page-faq .faq-hero__status-text {
  font-size: 13px;
  color: var(--color-text-secondary);
}
.page-faq .faq-hero__dot,
.page-faq .faq-sync-flow__dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 8px rgba(57, 255, 20, 0.6);
  vertical-align: middle;
  animation: faq-pulse 2s ease-out infinite;
}
@keyframes faq-pulse {
  0% { box-shadow: 0 0 0 0 rgba(57, 255, 20, 0.55); }
  70% { box-shadow: 0 0 0 8px rgba(57, 255, 20, 0); }
  100% { box-shadow: 0 0 0 0 rgba(57, 255, 20, 0); }
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  margin-top: 32px;
  padding-top: 22px;
  border-top: 1px solid var(--color-border);
}
.page-faq .faq-hero__meta-num {
  font-size: 30px;
  line-height: 1;
  font-weight: 700;
  color: var(--color-accent);
}
.page-faq .faq-hero__meta-label {
  display: block;
  margin-top: 7px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
}

/* ===== 问答主体布局 ===== */
.page-faq .faq-docs {
  padding: 8px 0 88px;
}
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: start;
}

/* ===== 分类索引 ===== */
.page-faq .faq-index {
  background: rgba(10, 25, 47, 0.72);
  border: 1px solid var(--color-border);
  border-radius: var(--faq-radius-lg);
  padding: 22px 18px;
}
.page-faq .faq-index__title {
  font-family: var(--font-headline);
  font-size: 22px;
  letter-spacing: 0.1em;
  color: #F5F5F5;
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px dashed rgba(224, 224, 224, 0.16);
}
.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: var(--faq-radius-md);
  border: 1px solid transparent;
  text-decoration: none;
  color: var(--color-text);
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
.page-faq .faq-index__link:hover {
  background: var(--faq-accent-soft);
  border-color: rgba(57, 255, 20, 0.24);
  color: var(--color-accent);
}
.page-faq .faq-index__num {
  font-size: 14px;
  color: var(--color-accent);
}
.page-faq .faq-index__text {
  font-size: 14px;
  font-weight: 500;
}
.page-faq .faq-index__card {
  margin-top: 18px;
  padding: 16px 14px;
  background: linear-gradient(145deg, rgba(57, 255, 20, 0.06), rgba(10, 25, 47, 0.44));
  border: 1px solid var(--color-border);
  border-radius: var(--faq-radius-md);
}
.page-faq .faq-index__card-title {
  color: #F0F0F0;
  font-size: 14px;
  font-weight: 600;
}
.page-faq .faq-index__card-text {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}
.page-faq .faq-index__btn {
  margin-top: 14px;
  width: 100%;
}

/* ===== 手风琴主内容 ===== */
.page-faq .faq-section {
  scroll-margin-top: 96px;
}
.page-faq .faq-section + .faq-section {
  margin-top: 64px;
  padding-top: 56px;
  border-top: 1px solid var(--color-border);
}
.page-faq .faq-section__head {
  margin-bottom: 28px;
}
.page-faq .faq-section__title {
  font-family: var(--font-headline);
  font-size: 38px;
  line-height: 1.05;
  letter-spacing: 0.02em;
  color: #F5F5F5;
  margin-top: 8px;
}
.page-faq .faq-section__desc {
  margin-top: 8px;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.page-faq .faq-panel {
  margin-bottom: 12px;
  border-radius: var(--faq-radius-md);
  background: var(--color-primary);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.page-faq .faq-panel:hover {
  border-color: rgba(57, 255, 20, 0.28);
}
.page-faq .faq-panel__details[open] {
  border-color: rgba(57, 255, 20, 0.35);
  box-shadow: 0 0 0 1px rgba(57, 255, 20, 0.06), var(--shadow);
}
.page-faq .faq-panel__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 17px 18px;
  cursor: pointer;
  list-style: none;
  user-select: none;
  -webkit-user-select: none;
}
.page-faq .faq-panel__summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-panel__details[open] .faq-panel__summary {
  border-bottom: 1px dashed rgba(224, 224, 224, 0.12);
}

.page-faq .faq-panel__icon {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  color: var(--color-accent);
  opacity: 0.75;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.page-faq .faq-panel__details[open] .faq-panel__icon {
  opacity: 1;
  transform: scale(1.08);
}
.page-faq .faq-panel__heading {
  flex: 1;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: #F0F0F0;
  transition: color 0.2s ease;
}
.page-faq .faq-panel__summary:hover .faq-panel__heading {
  color: var(--color-accent);
}
.page-faq .faq-panel__chevron {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  color: var(--color-text-secondary);
  transition: transform 0.35s ease, color 0.3s ease;
}
.page-faq .faq-panel__details[open] .faq-panel__chevron {
  transform: rotate(180deg);
  color: var(--color-accent);
}

.page-faq .faq-panel__answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.page-faq .faq-panel__details[open] .faq-panel__answer {
  grid-template-rows: 1fr;
}
.page-faq .faq-panel__answer-inner {
  min-height: 0;
  overflow: hidden;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 0 20px;
}
.page-faq .faq-panel__answer-label {
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  margin-top: 8px;
  border-radius: 6px;
  background: rgba(255, 107, 53, 0.12);
  border: 1px solid rgba(255, 107, 53, 0.3);
  color: var(--color-warning);
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.page-faq .faq-panel__answer-text {
  flex: 1;
  padding: 2px 0 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text-secondary);
}
.page-faq .faq-panel__link {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}
.page-faq .faq-panel__link:hover {
  color: #7dff66;
}

/* ===== 跨设备同步流程视觉 ===== */
.page-faq .faq-sync-flow {
  margin-top: 32px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  padding: 20px;
  border-radius: var(--faq-radius-lg);
  background: linear-gradient(135deg, rgba(57, 255, 20, 0.07), rgba(10, 25, 47, 0.55));
  border: 1px solid var(--color-border);
}
.page-faq .faq-sync-flow__media {
  border-radius: var(--faq-radius-md);
  overflow: hidden;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--color-border);
}
.page-faq .faq-sync-flow__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-faq .faq-sync-flow__title {
  font-family: var(--font-headline);
  font-size: 26px;
  letter-spacing: 0.05em;
  color: #F5F5F5;
  margin-top: 10px;
}
.page-faq .faq-sync-flow__text {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}
.page-faq .faq-sync-flow__btn {
  margin-top: 16px;
}

/* ===== 免责声明横幅 ===== */
.page-faq .faq-callout {
  margin-top: 32px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px 18px;
  border-radius: var(--faq-radius-md);
  background: var(--faq-warning-soft);
  border: 1px solid rgba(255, 107, 53, 0.24);
}
.page-faq .faq-callout__icon {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(255, 107, 53, 0.16);
  color: var(--color-warning);
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.page-faq .faq-callout__text {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}
.page-faq .faq-callout__link {
  color: var(--color-warning);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}
.page-faq .faq-callout__link:hover {
  color: #ff8d63;
}

/* ===== 焦点可见性 ===== */
.page-faq .faq-index__link:focus-visible,
.page-faq .faq-panel__summary:focus-visible,
.page-faq .faq-callout__link:focus-visible,
.page-faq .faq-panel__link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ===== 平板：同步流程双列 ===== */
@media (min-width: 640px) {
  .page-faq .faq-sync-flow {
    grid-template-columns: 260px 1fr;
    align-items: center;
  }
}

/* ===== 桌面：分屏与侧栏 ===== */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 72px 0 88px;
  }
  .page-faq .faq-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 64px;
  }
  .page-faq .faq-hero__visual {
    transform: rotate(-0.8deg);
  }
  .page-faq .faq-hero__content {
    transform: rotate(0.35deg);
  }
  .page-faq .faq-hero__title {
    font-size: 68px;
  }
  .page-faq .faq-hero__chip--top {
    top: 24px;
    right: 6px;
  }
  .page-faq .faq-hero__chip--bottom {
    left: 6px;
    bottom: 24px;
  }
  .page-faq .faq-docs {
    padding: 8px 0 120px;
  }
  .page-faq .faq-layout {
    grid-template-columns: 300px 1fr;
    gap: 64px;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 96px;
  }
}

/* ===== 大屏微调 ===== */
@media (min-width: 1280px) {
  .page-faq .faq-hero__title {
    font-size: 80px;
  }
  .page-faq .faq-hero__chip-value {
    font-size: 26px;
  }
}

/* ===== 动效弱化 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__visual,
  .page-faq .faq-hero__content {
    transform: none;
  }
  .page-faq .faq-hero__dot,
  .page-faq .faq-sync-flow__dot {
    animation: none;
  }
  .page-faq .faq-panel__answer {
    transition: none;
  }
  .page-faq .faq-panel__icon,
  .page-faq .faq-panel__chevron {
    transition: none;
  }
}