/* ===== 帮助中心页面专属样式 ===== */
.page-faq {
  --faq-web: var(--c-accent);
  --faq-ios: var(--c-link);
  --faq-filter: var(--c-primary-4);
  --faq-data: var(--c-primary-3);
  --faq-account: var(--c-dark);
  --faq-card-radius: 20px;
  background: var(--c-light);
}

/* ---------- 首屏 Hero ---------- */
.page-faq .faq-hero {
  padding: 32px 0 56px;
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  right: -120px;
  top: -160px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 0, 0.28) 0%, rgba(255, 107, 0, 0) 70%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--c-accent) 0 8px, transparent 8px 20px, var(--c-primary-4) 20px 26px, transparent 26px 40px);
  opacity: 0.45;
  pointer-events: none;
}

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

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

.page-faq .faq-hero .kicker {
  color: var(--c-accent-soft);
}

.page-faq .faq-hero .page-title {
  color: var(--c-white);
  font-size: 38px;
  line-height: 1.15;
  margin-bottom: 14px;
}

.page-faq .faq-hero .page-lead {
  color: rgba(242, 242, 242, 0.82);
  max-width: 720px;
  margin-bottom: 24px;
}

.page-faq .faq-hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-faq .faq-hero-meta .data-chip {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--c-white);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  font-family: var(--font-data);
  font-size: 12px;
}

/* ---------- 主体网格 ---------- */
.page-faq .faq-body {
  padding: 44px 0 56px;
}

.page-faq .faq-body-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

/* ---------- 左侧图例 ---------- */
.page-faq .faq-side {
  display: flex;
  flex-direction: column;
}

.page-faq .faq-side-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.page-faq .faq-side-head .coord-tag {
  flex-shrink: 0;
}

.page-faq .faq-side-note {
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-muted);
  margin: 0 0 20px;
}

.page-faq .faq-legend {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-pill);
  font-size: 14px;
  line-height: 1.4;
  color: var(--c-dark);
}

.page-faq .faq-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.page-faq .faq-legend-dot--web { background: var(--faq-web); }
.page-faq .faq-legend-dot--ios { background: var(--faq-ios); }
.page-faq .faq-legend-dot--filter { background: var(--faq-filter); }
.page-faq .faq-legend-dot--data { background: var(--faq-data); }
.page-faq .faq-legend-dot--account { background: var(--faq-account); }

.page-faq .faq-legend-label {
  font-weight: 500;
}

.page-faq .faq-legend-count {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--c-muted);
}

/* ---------- 常用入口卡片 ---------- */
.page-faq .faq-quick {
  padding: 18px 20px;
}

.page-faq .faq-quick-title {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--c-primary);
}

.page-faq .faq-quick-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-quick-list a {
  color: var(--c-link);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-quick-list a:hover {
  color: var(--c-accent);
}

/* ---------- 右侧内容 ---------- */
.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-doc-cover {
  margin: 0 0 28px;
}

.page-faq .faq-doc-cover img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
}

.page-faq .faq-doc-cover figcaption {
  font-size: 13px;
  color: var(--c-muted);
  margin-top: 10px;
}

.page-faq .faq-main-head {
  margin-bottom: 18px;
}

.page-faq .faq-main-head-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.page-faq .faq-main-note {
  font-size: 13px;
  color: var(--c-muted);
  margin: 0;
}

.page-faq .faq-filters .filter-bar {
  margin-bottom: 22px;
}

.page-faq .faq-accordion {
  display: grid;
  gap: 12px;
}

/* ---------- 手风琴条目 ---------- */
.page-faq .faq-item {
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(255, 107, 0, 0.35);
  box-shadow: 0 8px 24px rgba(10, 30, 60, 0.08);
}

.page-faq .faq-summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  color: var(--c-dark);
  transition: background-color var(--dur) var(--ease);
}

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

.page-faq .faq-summary:hover {
  background: rgba(10, 30, 60, 0.03);
}

.page-faq .faq-summary::after {
  content: "";
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--c-accent);
  border-bottom: 2px solid var(--c-accent);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease);
  flex-shrink: 0;
  margin-left: auto;
  margin-right: 4px;
}

.page-faq .faq-item[open] .faq-summary::after {
  transform: rotate(-135deg);
}

.page-faq .faq-num {
  font-family: var(--font-data);
  font-size: 13px;
  line-height: 1;
  color: var(--c-muted);
  flex-shrink: 0;
  min-width: 26px;
}

.page-faq .faq-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}

.page-faq .faq-dot--web { background: var(--faq-web); }
.page-faq .faq-dot--ios { background: var(--faq-ios); }
.page-faq .faq-dot--filter { background: var(--faq-filter); }
.page-faq .faq-dot--data { background: var(--faq-data); }
.page-faq .faq-dot--account { background: var(--faq-account); }

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

/* ---------- 展开面板 ---------- */
.page-faq .faq-panel {
  padding: 0 20px 20px;
}

.page-faq .faq-panel-inner {
  background: var(--c-light);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-dark);
  animation: faqFadeUp 0.35s var(--ease) both;
}

.page-faq .faq-panel-inner p {
  margin: 0;
}

.page-faq .faq-panel-inner img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--radius-md);
  margin-top: 16px;
  object-fit: cover;
}

@keyframes faqFadeUp {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-support {
  padding: 8px 0 72px;
}

.page-faq .faq-support-card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--c-primary-deep) 0%, var(--c-primary) 58%, var(--c-primary-2) 100%);
  border-radius: var(--radius-xl);
  padding: 36px 28px;
  color: var(--c-white);
}

.page-faq .faq-support-card::before {
  content: "";
  position: absolute;
  right: -100px;
  bottom: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 0, 0.3) 0%, rgba(255, 107, 0, 0) 70%);
  pointer-events: none;
}

.page-faq .faq-support-card .coord-tag {
  position: relative;
  z-index: 1;
  display: inline-flex;
  margin-bottom: 16px;
}

.page-faq .faq-support-card > h2 {
  position: relative;
  z-index: 1;
  font-family: var(--font-heading);
  font-size: 30px;
  line-height: 1.3;
  margin: 0 0 12px;
  color: var(--c-white);
}

.page-faq .faq-support-card > p {
  position: relative;
  z-index: 1;
  color: rgba(242, 242, 242, 0.82);
  font-size: 15px;
  line-height: 1.7;
  max-width: 620px;
  margin: 0;
}

.page-faq .faq-support-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 24px;
}

.page-faq .faq-support-card .faq-btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.42);
  color: var(--c-white);
}

.page-faq .faq-support-card .faq-btn-ghost:hover {
  border-color: var(--c-accent-soft);
  color: var(--c-accent-soft);
}

.page-faq .faq-support-meta {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px 28px;
  margin: 0;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.page-faq .faq-support-meta div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-support-meta dt {
  font-size: 13px;
  color: var(--c-accent-soft);
}

.page-faq .faq-support-meta dd {
  margin: 0;
  font-family: var(--font-data);
  font-size: 14px;
  line-height: 1.5;
  color: var(--c-white);
  word-break: break-all;
}

.page-faq .faq-support-meta dd.faq-meta-desc {
  font-family: var(--font-body);
  font-weight: 400;
}

/* ---------- 平板适配 ---------- */
@media (min-width: 600px) and (max-width: 959.98px) {
  .page-faq .faq-legend {
    gap: 12px;
  }

  .page-faq .faq-support-meta {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .faq-hero .page-title {
    font-size: 44px;
  }
}

/* ---------- 桌面适配 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 40px 0 72px;
  }

  .page-faq .faq-hero .page-title {
    font-size: 52px;
    max-width: 640px;
  }

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

  .page-faq .faq-body {
    padding: 56px 0 64px;
  }

  .page-faq .faq-body-grid {
    grid-template-columns: 280px 1fr;
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-faq .faq-legend {
    flex-direction: column;
    align-items: stretch;
  }

  .page-faq .faq-legend-item {
    width: 100%;
    box-sizing: border-box;
  }

  .page-faq .faq-main-head {
    margin-bottom: 20px;
  }

  .page-faq .faq-panel {
    padding: 0 20px 20px 76px;
  }

  .page-faq .faq-support-card {
    padding: 48px 48px 44px;
  }

  .page-faq .faq-support-card > h2 {
    font-size: 36px;
  }

  .page-faq .faq-support-meta {
    grid-template-columns: repeat(4, 1fr);
  }
}