/* ===== 页面专属：.page-faq ===== */
.page-faq {
  --faq-section-gap: clamp(2.5rem, 5vw, 4rem);
  --faq-card-radius: 8px;
  --faq-border-accent: 3px solid var(--accent2, #39FF14);
  max-width: var(--container-max, 1200px);
  margin: 0 auto;
  padding: 1rem 1rem 2.5rem;
  background: var(--bg-primary, #0B1D3A);
  color: var(--text-primary, #fff);
  font-family: var(--font-body, 'Inter', sans-serif);
  line-height: 1.6;
}

/* ---- 面包屑 ---- */
.page-faq .faq-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--text-secondary, #A0B0C0);
  margin-bottom: 0.8rem;
  flex-wrap: wrap;
}
.page-faq .faq-breadcrumb a {
  color: var(--accent1, #FF6B35);
  text-decoration: none;
  transition: opacity 0.2s;
}
.page-faq .faq-breadcrumb a:hover,
.page-faq .faq-breadcrumb a:focus-visible {
  opacity: 0.75;
  outline: 2px solid var(--accent1, #FF6B35);
  outline-offset: 2px;
}
.page-faq .faq-breadcrumb-sep {
  user-select: none;
  color: var(--text-secondary, #A0B0C0);
}

/* ---- 页面标题 ---- */
.page-faq .faq-header {
  margin-bottom: 1.5rem;
}
.page-faq .faq-header-title {
  font-family: var(--font-headline, 'Impact', 'Helvetica Neue', sans-serif);
  font-weight: 900;
  font-size: clamp(2rem, 5vw, 3.2rem);
  letter-spacing: -0.02em;
  color: var(--text-primary, #fff);
  margin: 0 0 0.5rem;
  line-height: 1.1;
}
.page-faq .faq-header-desc {
  font-size: 1rem;
  color: var(--text-secondary, #A0B0C0);
  max-width: 680px;
  margin: 0;
}

/* ---- 快速索引标签 ---- */
.page-faq .faq-index {
  display: flex;
  gap: 0.6rem;
  margin-bottom: 2rem;
  padding-bottom: 0.6rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--accent1, #FF6B35) transparent;
}
.page-faq .faq-index::-webkit-scrollbar {
  height: 4px;
}
.page-faq .faq-index::-webkit-scrollbar-thumb {
  background: var(--accent1, #FF6B35);
  border-radius: 4px;
}
.page-faq .faq-index-item {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  background: var(--bg-card, #13294B);
  border: 1px solid var(--accent1, #FF6B35);
  border-radius: 20px;
  color: var(--accent1, #FF6B35);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.25s, color 0.25s, transform 0.2s;
  transform: skewX(-2deg);
}
.page-faq .faq-index-item:hover,
.page-faq .faq-index-item:focus-visible {
  background: var(--accent1, #FF6B35);
  color: var(--text-primary, #fff);
  transform: skewX(-2deg) scale(1.04);
  outline: none;
}

/* ---- 板块 ---- */
.page-faq .faq-section {
  margin-bottom: var(--faq-section-gap);
  padding: 1.2rem 1rem 1.5rem;
  background: var(--bg-card, #13294B);
  border-radius: var(--faq-card-radius);
  border: 1px solid var(--border-color, #2A3F5F);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}
.page-faq .faq-section-top {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.2rem;
}
.page-faq .faq-section-title {
  font-family: var(--font-headline, 'Impact', 'Helvetica Neue', sans-serif);
  font-weight: 700;
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--accent1, #FF6B35);
  margin: 0;
  line-height: 1.2;
  position: relative;
  padding-bottom: 0.4rem;
}
.page-faq .faq-section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60%;
  height: 3px;
  background: linear-gradient(135deg, var(--accent2, #39FF14) 40%, transparent 100%);
  transform: skewX(-12deg);
  transform-origin: left center;
}
.page-faq .faq-section-img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  border: 1px solid var(--border-color, #2A3F5F);
  object-fit: cover;
  background: var(--bg-primary, #0B1D3A);
}

/* ---- FAQ 列表与卡片 ---- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.page-faq .faq-item {
  border-left: var(--faq-border-accent);
  background: var(--bg-primary, #0B1D3A);
  border-radius: 0 var(--faq-card-radius) var(--faq-card-radius) 0;
  overflow: hidden;
  transition: box-shadow 0.25s, border-color 0.25s;
}
.page-faq .faq-item[open] {
  box-shadow: 0 0 0 1px var(--accent2, #39FF14), 0 6px 16px rgba(57, 255, 20, 0.08);
}

/* ---- 问题标题 (summary) ---- */
.page-faq .faq-question {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1rem;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary, #fff);
  transition: background 0.2s;
  user-select: none;
}
.page-faq .faq-question::-webkit-details-marker,
.page-faq .faq-question::marker {
  display: none;
  content: '';
}
.page-faq .faq-question:hover,
.page-faq .faq-question:focus-visible {
  background: rgba(255, 107, 53, 0.08);
  outline: none;
}
.page-faq .faq-q-label {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--accent1, #FF6B35);
  color: var(--text-primary, #fff);
  font-size: 0.7rem;
  font-weight: 800;
  border-radius: 4px;
  letter-spacing: 0;
}
.page-faq .faq-q-text {
  flex: 1;
  line-height: 1.4;
}
.page-faq .faq-toggle-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  transition: transform 0.3s ease;
  color: var(--accent2, #39FF14);
  font-weight: 700;
  font-size: 1.2rem;
  line-height: 1;
}
.page-faq .faq-toggle-icon::before {
  content: '+';
  display: block;
  transition: transform 0.3s ease;
}
.page-faq .faq-item[open] .faq-toggle-icon::before {
  content: '−';
  transform: rotate(0deg);
}

/* ---- 答案内容 ---- */
.page-faq .faq-answer {
  padding: 0 1rem 1rem calc(1rem + 28px + 0.6rem);
  color: var(--text-primary, #fff);
  font-size: 0.9rem;
  line-height: 1.65;
  animation: faqFadeIn 0.35s ease-out;
}
.page-faq .faq-answer p {
  margin: 0.5rem 0;
}
.page-faq .faq-answer a {
  color: var(--accent1, #FF6B35);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s;
}
.page-faq .faq-answer a:hover,
.page-faq .faq-answer a:focus-visible {
  color: var(--accent2, #39FF14);
  outline: none;
}

/* ---- 进度条动画 ---- */
.page-faq .faq-progress-bar {
  height: 3px;
  background: var(--border-color, #2A3F5F);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 0.6rem;
}
.page-faq .faq-progress-fill {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--accent2, #39FF14);
  transform: translateX(-100%);
  transition: transform 0.4s ease;
}
.page-faq .faq-item[open] .faq-progress-fill {
  animation: faqProgressSlide 0.6s ease-out forwards;
}

@keyframes faqProgressSlide {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(0);
  }
}
@keyframes faqFadeIn {
  0% {
    opacity: 0;
    transform: translateY(-6px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---- 操作按钮 ---- */
.page-faq .faq-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.8rem;
  flex-wrap: wrap;
}
.page-faq .faq-act-btn {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.8rem;
  font-size: 0.75rem;
  font-weight: 500;
  font-family: var(--font-body, 'Inter', sans-serif);
  color: var(--text-secondary, #A0B0C0);
  background: transparent;
  border: 1px solid var(--border-color, #2A3F5F);
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  user-select: none;
}
.page-faq .faq-act-btn:hover,
.page-faq .faq-act-btn:focus-visible {
  background: var(--bg-card, #13294B);
  color: var(--text-primary, #fff);
  border-color: var(--accent2, #39FF14);
  outline: none;
}
.page-faq .faq-act-btn[data-feedback="useful"]:hover {
  border-color: var(--accent2, #39FF14);
  color: var(--accent2, #39FF14);
}
.page-faq .faq-act-btn[data-feedback="useless"]:hover {
  border-color: var(--error, #FF4444);
  color: var(--error, #FF4444);
}
.page-faq .faq-act-btn[data-copy-button]:hover {
  border-color: var(--accent1, #FF6B35);
  color: var(--accent1, #FF6B35);
}

/* ---- 联系引导 ---- */
.page-faq .faq-contact-cta {
  margin-top: 2rem;
  padding: 1.5rem 1.5rem 2rem;
  background: linear-gradient(135deg, var(--accent1, #FF6B35) 0%, #D94F1E 100%);
  border-radius: var(--faq-card-radius);
  text-align: center;
  color: var(--text-primary, #fff);
}
.page-faq .faq-cta-title {
  font-family: var(--font-headline, 'Impact', 'Helvetica Neue', sans-serif);
  font-weight: 700;
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  margin: 0 0 0.4rem;
  letter-spacing: -0.01em;
}
.page-faq .faq-cta-text {
  font-size: 0.95rem;
  margin: 0 0 1rem;
  opacity: 0.92;
}
.page-faq .faq-cta-link {
  display: inline-block;
  padding: 0.55rem 1.6rem;
  background: var(--text-primary, #fff);
  color: var(--accent1, #FF6B35);
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: 30px;
  text-decoration: none;
  transition: background 0.25s, color 0.25s, transform 0.2s;
  transform: skewX(-3deg);
}
.page-faq .faq-cta-link:hover,
.page-faq .faq-cta-link:focus-visible {
  background: var(--accent2, #39FF14);
  color: var(--bg-primary, #0B1D3A);
  transform: skewX(-3deg) scale(1.03);
  outline: none;
}

/* ===== 桌面端 (≥768px) ===== */
@media (min-width: 768px) {
  .page-faq {
    padding: 1.5rem 2rem 3rem;
  }
  .page-faq .faq-breadcrumb {
    font-size: 0.9rem;
    margin-bottom: 1rem;
  }
  .page-faq .faq-header {
    margin-bottom: 2rem;
  }
  .page-faq .faq-header-title {
    font-size: clamp(2.4rem, 4.5vw, 3.6rem);
  }
  .page-faq .faq-header-desc {
    font-size: 1.05rem;
  }
  .page-faq .faq-index {
    gap: 0.8rem;
    margin-bottom: 2.5rem;
    justify-content: center;
    overflow-x: visible;
    flex-wrap: wrap;
  }
  .page-faq .faq-index-item {
    font-size: 0.9rem;
    padding: 0.55rem 1.3rem;
  }
  .page-faq .faq-section {
    padding: 1.5rem 1.8rem 1.8rem;
  }
  .page-faq .faq-section-top {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
  }
  .page-faq .faq-section-top--reverse {
    flex-direction: row-reverse;
  }
  .page-faq .faq-section-title {
    flex: 1;
  }
  .page-faq .faq-section-title::after {
    width: 80px;
  }
  .page-faq .faq-section-img {
    flex-shrink: 0;
  }
  .page-faq .faq-question {
    padding: 0.95rem 1.2rem;
    font-size: 1rem;
  }
  .page-faq .faq-answer {
    font-size: 0.95rem;
    padding-right: 2rem;
  }
  .page-faq .faq-contact-cta {
    padding: 2rem 3rem 2.5rem;
  }
  .page-faq .faq-cta-title {
    font-size: 1.6rem;
  }
  .page-faq .faq-cta-text {
    font-size: 1rem;
  }
}

/* ===== 宽桌面 (≥1024px) ===== */
@media (min-width: 1024px) {
  .page-faq {
    padding: 2rem 2.5rem 4rem;
  }
  .page-faq .faq-section {
    padding: 1.8rem 2.2rem 2rem;
  }
  .page-faq .faq-list {
    gap: 0.8rem;
  }
  .page-faq .faq-answer {
    padding-left: calc(1.2rem + 28px + 0.8rem);
  }
}