.page-faq {
  --faq-tab-accent: var(--accent, #FF6B35);
  --faq-tab-bg: var(--primary, #1A2A3A);
  --faq-card-bg: #f5f2ed;
  --faq-border-light: var(--border, #C0C0C0);
  --faq-text-muted: var(--text-secondary, #4A4A4A);

  padding: 2rem 0 4rem;
  background: var(--bg, #E0E0E0);
  font-family: var(--font-body, 'Inter', Roboto, sans-serif);
  color: var(--text-primary, #1A1A1A);
}

/* 面包屑 */
.page-faq .breadcrumbs {
  font-size: 0.85rem;
  color: var(--faq-text-muted);
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
}
.page-faq .breadcrumbs a {
  color: var(--faq-tab-accent);
  text-decoration: none;
  transition: opacity 0.2s;
}
.page-faq .breadcrumbs a:hover {
  opacity: 0.75;
}

/* 标题区 */
.page-faq .faq-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  margin-bottom: 2rem;
  position: relative;
}
.page-faq .faq-header-icon {
  width: 60px;
  height: 60px;
  object-fit: contain;
  flex-shrink: 0;
  border-radius: 4px;
  background: #fff;
  padding: 6px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.page-faq .faq-header h1 {
  font-family: var(--font-headings, 'Oswald', Impact, sans-serif);
  font-size: clamp(2rem, 6vw, 3.2rem);
  font-weight: 700;
  line-height: 1.1;
  text-transform: uppercase;
  margin: 0;
  color: var(--faq-tab-bg);
  letter-spacing: 0.02em;
  flex: 1 1 auto;
}
.page-faq .faq-header-desc {
  width: 100%;
  font-size: 1rem;
  color: var(--faq-text-muted);
  margin: 0 0 0.25rem 0;
  max-width: 640px;
  line-height: 1.6;
}
.page-faq .faq-header-divider {
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--faq-tab-accent) 0%, var(--faq-tab-bg) 70%, transparent 100%);
  margin-top: 0.5rem;
  border-radius: 2px;
}

/* 标签容器 */
.page-faq .faq-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  position: relative;
}

/* 标签组 */
.page-faq .tab-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  width: 100%;
  margin-bottom: 1.75rem;
  border-bottom: 2px solid var(--faq-border-light);
  padding-bottom: 0.5rem;
}
.page-faq .tab-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.2rem;
  font-family: var(--font-headings, 'Oswald', Impact, sans-serif);
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--faq-text-muted);
  background: transparent;
  border: 2px solid transparent;
  border-radius: 4px 4px 0 0;
  cursor: pointer;
  transition: all 0.25s ease;
  user-select: none;
  position: relative;
}
.page-faq .tab-label .tab-num {
  font-weight: 400;
  opacity: 0.5;
  font-size: 0.85em;
}
.page-faq .tab-label:hover {
  color: var(--faq-tab-bg);
  border-color: var(--faq-border-light);
  background: rgba(255,255,255,0.4);
}
/* 激活态 via radio checked ~ 兄弟 */
.page-faq #tab-platform:checked ~ .tab-labels label[for="tab-platform"],
.page-faq #tab-data:checked ~ .tab-labels label[for="tab-data"],
.page-faq #tab-contact:checked ~ .tab-labels label[for="tab-contact"] {
  color: #fff;
  background: var(--faq-tab-bg);
  border-color: var(--faq-tab-bg);
}
.page-faq #tab-platform:checked ~ .tab-labels label[for="tab-platform"] .tab-num,
.page-faq #tab-data:checked ~ .tab-labels label[for="tab-data"] .tab-num,
.page-faq #tab-contact:checked ~ .tab-labels label[for="tab-contact"] .tab-num {
  opacity: 0.8;
}

/* 标签内容面板 */
.page-faq .tab-content {
  display: none;
  width: 100%;
  padding: 0.5rem 0 1.5rem;
  animation: faqFadeIn 0.35s ease;
}
@keyframes faqFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.page-faq #tab-platform:checked ~ .tab-content[data-tab="platform"],
.page-faq #tab-data:checked ~ .tab-content[data-tab="data"],
.page-faq #tab-contact:checked ~ .tab-content[data-tab="contact"] {
  display: block;
}

.page-faq .tab-content-title {
  font-family: var(--font-headings, 'Oswald', Impact, sans-serif);
  font-size: 1.6rem;
  font-weight: 700;
  margin: 0 0 1.25rem 0;
  color: var(--faq-tab-bg);
  letter-spacing: 0.02em;
  display: inline-block;
  border-left: 5px solid var(--faq-tab-accent);
  padding-left: 0.85rem;
}

/* 问答列表 */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
}
.page-faq .faq-item {
  background: #fff;
  border: 1px solid var(--faq-border-light);
  border-radius: 6px;
  overflow: hidden;
  transition: box-shadow 0.2s;
}
.page-faq .faq-item:hover {
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.page-faq .faq-item details {
  display: block;
}
.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.5;
  cursor: pointer;
  list-style: none;
  position: relative;
  color: var(--faq-tab-bg);
  transition: background 0.2s;
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  font-weight: 300;
  margin-left: auto;
  color: var(--faq-tab-accent);
  transition: transform 0.25s ease;
  flex-shrink: 0;
  line-height: 1;
}
.page-faq .faq-item details[open] summary::after {
  content: "−";
  transform: rotate(0deg);
}
.page-faq .faq-item summary:hover {
  background: #faf8f5;
}
.page-faq .faq-item .faq-q {
  flex: 1;
}
.page-faq .faq-item .faq-a {
  padding: 0.25rem 1.25rem 1.25rem 1.25rem;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--faq-text-muted);
  border-top: 1px dashed var(--faq-border-light);
  margin-top: 0;
}
.page-faq .faq-item .faq-a p {
  margin: 0.75rem 0 0;
}

/* 截图 */
.page-faq .faq-screenshot {
  width: 100%;
  max-width: 600px;
  height: auto;
  border-radius: 6px;
  border: 1px solid var(--faq-border-light);
  margin: 1.5rem 0 1rem;
  display: block;
  object-fit: cover;
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

/* 额外链接 */
.page-faq .faq-extra-link {
  margin-top: 0.5rem;
  font-size: 0.95rem;
}
.page-faq .faq-extra-link a {
  color: var(--faq-tab-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 500;
  transition: opacity 0.2s;
}
.page-faq .faq-extra-link a:hover {
  opacity: 0.75;
}

/* 联系卡片 */
.page-faq .faq-contact-card {
  background: var(--faq-card-bg);
  border: 2px solid var(--faq-tab-bg);
  border-radius: 10px;
  padding: 1.5rem 1.25rem;
  margin-top: 0.5rem;
  box-shadow: 0 4px 20px rgba(26,42,58,0.08);
  position: relative;
}
.page-faq .faq-contact-card::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 2rem;
  right: 2rem;
  height: 4px;
  background: var(--faq-tab-accent);
  border-radius: 0 0 4px 4px;
}
.page-faq .contact-card-inner {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.page-faq .contact-method {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.page-faq .contact-label {
  font-family: var(--font-headings, 'Oswald', Impact, sans-serif);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--faq-tab-bg);
  opacity: 0.7;
}
.page-faq .contact-value {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--faq-tab-bg);
  word-break: break-word;
}
.page-faq .contact-value a {
  color: var(--faq-tab-accent);
  text-decoration: none;
  transition: opacity 0.2s;
}
.page-faq .contact-value a:hover {
  opacity: 0.75;
  text-decoration: underline;
}
.page-faq .contact-note {
  font-size: 0.85rem;
  color: var(--faq-text-muted);
  margin: 0.15rem 0 0;
  line-height: 1.5;
}
.page-faq .contact-card-footer {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--faq-border-light);
  font-size: 0.9rem;
}
.page-faq .contact-card-footer a {
  color: var(--faq-tab-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  font-weight: 500;
}

/* ===== 移动端优先 基础样式已适配 ===== */
/* 桌面增强 */
@media (min-width: 768px) {
  .page-faq {
    padding: 3rem 0 5rem;
  }
  .page-faq .faq-header {
    gap: 1rem 2rem;
  }
  .page-faq .faq-header-icon {
    width: 80px;
    height: 80px;
  }
  .page-faq .faq-header-desc {
    font-size: 1.1rem;
  }
  .page-faq .tab-labels {
    gap: 0.75rem;
    padding-bottom: 0.75rem;
    margin-bottom: 2rem;
  }
  .page-faq .tab-label {
    font-size: 1.1rem;
    padding: 0.7rem 1.5rem;
  }
  .page-faq .tab-content {
    padding: 0.75rem 0 2rem;
  }
  .page-faq .tab-content-title {
    font-size: 1.8rem;
  }
  .page-faq .faq-item summary {
    padding: 1.1rem 1.5rem;
    font-size: 1.05rem;
  }
  .page-faq .faq-item .faq-a {
    padding: 0.5rem 1.5rem 1.5rem 1.5rem;
    font-size: 1rem;
  }
  .page-faq .faq-contact-card {
    padding: 2rem 2rem;
  }
  .page-faq .contact-card-inner {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 2rem;
  }
  .page-faq .contact-method {
    flex: 1 1 200px;
  }
  .page-faq .faq-screenshot {
    margin: 2rem 0 1.25rem;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-header h1 {
    font-size: 3.6rem;
  }
  .page-faq .tab-content {
    padding-right: 2rem;
  }
  .page-faq .faq-list {
    gap: 1rem;
  }
}