/* ===== 常见问答页 · page-faq ===== */
.page-faq {
  --faq-hero-bg: linear-gradient(135deg, #1A1A1A 0%, #2a0f15 40%, #1A1A1A 100%);
  --faq-accent: #C8102E;
  --faq-accent-glow: #7F3FBF;
  --faq-text: #FFFFFF;
  --faq-text-muted: #B0B0B0;
  --faq-card-bg: rgba(26,26,26,0.85);
  --faq-card-border: rgba(176,176,176,0.12);
  --faq-radius: 10px;
  --faq-transition: 0.35s cubic-bezier(0.25,0.46,0.45,0.94);
  --faq-max-width: 820px;
  width: 100%;
}

/* 容器 */
.page-faq .container {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 面包屑 ===== */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--faq-text-muted);
  padding: 16px 0 8px;
}
.page-faq .breadcrumb a {
  color: var(--faq-text-muted);
  text-decoration: none;
  transition: color var(--faq-transition);
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--faq-accent);
}
.page-faq .breadcrumb .sep {
  color: rgba(176,176,176,0.4);
  font-size: 12px;
}
.page-faq .breadcrumb [aria-current="page"] {
  color: var(--faq-text);
  font-weight: 500;
}

/* ===== 英雄区 ===== */
.page-faq .faq-hero {
  background: var(--faq-hero-bg);
  padding: 30px 0 48px;
  position: relative;
  overflow: hidden;
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -10%;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle at center, rgba(200,16,46,0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  bottom: -20%;
  left: -8%;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle at center, rgba(127,63,191,0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.page-faq .faq-hero-title {
  font-family: var(--font-heading, 'Inter','Helvetica Neue',sans-serif);
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--faq-text);
  margin: 12px 0 6px;
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero-desc {
  font-size: 16px;
  color: var(--faq-text-muted);
  margin: 0 0 24px;
  line-height: 1.5;
  position: relative;
  z-index: 1;
  max-width: 540px;
}

/* 搜索框 */
.page-faq .faq-search-wrap {
  position: relative;
  z-index: 1;
  max-width: 520px;
}
.page-faq .faq-search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--faq-text-muted);
  pointer-events: none;
  width: 20px;
  height: 20px;
}
.page-faq .faq-search-input {
  display: block;
  width: 100%;
  padding: 13px 14px 13px 44px;
  font-size: 15px;
  font-family: var(--font-body, 'Inter','Helvetica Neue',sans-serif);
  color: var(--faq-text);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--faq-card-border);
  border-radius: var(--faq-radius);
  outline: none;
  transition: border-color var(--faq-transition), background var(--faq-transition);
  box-sizing: border-box;
}
.page-faq .faq-search-input::placeholder {
  color: var(--faq-text-muted);
  opacity: 0.7;
}
.page-faq .faq-search-input:focus {
  border-color: var(--faq-accent);
  background: rgba(255,255,255,0.10);
  box-shadow: 0 0 0 3px rgba(200,16,46,0.15);
}

/* ===== 标签栏 ===== */
.page-faq .faq-tabs {
  padding: 36px 0 50px;
  background: #1A1A1A;
}
.page-faq .faq-tab-radio {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}
.page-faq .faq-tab-labels {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  padding: 0 0 4px;
  margin-bottom: 28px;
  position: relative;
  z-index: 2;
}
.page-faq .faq-tab-labels::-webkit-scrollbar {
  display: none;
}
.page-faq .faq-tab-label {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--faq-text-muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--faq-card-border);
  border-radius: 100px;
  cursor: pointer;
  transition: all var(--faq-transition);
  user-select: none;
  white-space: nowrap;
}
.page-faq .faq-tab-label:hover {
  background: rgba(255,255,255,0.08);
  color: var(--faq-text);
}
.page-faq .faq-tab-label svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
}
.page-faq #faq-tab-1:checked ~ .faq-tab-labels label[for="faq-tab-1"],
.page-faq #faq-tab-2:checked ~ .faq-tab-labels label[for="faq-tab-2"],
.page-faq #faq-tab-3:checked ~ .faq-tab-labels label[for="faq-tab-3"],
.page-faq #faq-tab-4:checked ~ .faq-tab-labels label[for="faq-tab-4"] {
  background: var(--faq-accent);
  color: #FFFFFF;
  border-color: var(--faq-accent);
  box-shadow: 0 4px 16px rgba(200,16,46,0.25);
}

/* ===== 标签面板 ===== */
.page-faq .faq-tab-panels {
  position: relative;
  min-height: 320px;
}
.page-faq .faq-panel {
  display: none;
  animation: faqFadeIn 0.4s ease forwards;
}
@keyframes faqFadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
.page-faq #faq-tab-1:checked ~ .faq-tab-panels #faq-panel-1,
.page-faq #faq-tab-2:checked ~ .faq-tab-panels #faq-panel-2,
.page-faq #faq-tab-3:checked ~ .faq-tab-panels #faq-panel-3,
.page-faq #faq-tab-4:checked ~ .faq-tab-panels #faq-panel-4 {
  display: block;
}

/* ===== 图片块 ===== */
.page-faq .faq-img-block {
  margin-bottom: 24px;
  border-radius: var(--faq-radius);
  overflow: hidden;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--faq-card-border);
  box-shadow: 0 4px 20px rgba(0,0,0,0.20);
}
.page-faq .faq-img-block--bottom {
  margin-top: 28px;
  margin-bottom: 0;
}
.page-faq .faq-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===== 手风琴列表 ===== */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-faq .faq-item {
  background: var(--faq-card-bg);
  border: 1px solid var(--faq-card-border);
  border-radius: var(--faq-radius);
  overflow: hidden;
  transition: border-color var(--faq-transition);
}
.page-faq .faq-item:hover {
  border-color: rgba(200,16,46,0.25);
}
.page-faq .faq-checkbox {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}
.page-faq .faq-question {
  display: block;
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--faq-text);
  cursor: pointer;
  transition: color var(--faq-transition), background var(--faq-transition);
  position: relative;
  user-select: none;
  line-height: 1.4;
}
.page-faq .faq-question::after {
  content: "";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%) rotate(0deg);
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--faq-text-muted);
  border-bottom: 2px solid var(--faq-text-muted);
  transition: transform var(--faq-transition), border-color var(--faq-transition);
  pointer-events: none;
}
.page-faq .faq-question:hover {
  background: rgba(255,255,255,0.03);
}
.page-faq .faq-checkbox:checked + .faq-question {
  color: var(--faq-accent);
}
.page-faq .faq-checkbox:checked + .faq-question::after {
  transform: translateY(-50%) rotate(-135deg);
  border-color: var(--faq-accent);
}
.page-faq .faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.42s ease, padding 0.3s ease;
  padding: 0 20px;
  color: var(--faq-text-muted);
  font-size: 15px;
  line-height: 1.6;
  border-top: 0 solid transparent;
}
.page-faq .faq-checkbox:checked ~ .faq-answer {
  max-height: 320px;
  padding: 0 20px 18px;
  border-top-width: 1px;
  border-top-color: var(--faq-card-border);
}
.page-faq .faq-answer p {
  margin: 10px 0 0;
}
.page-faq .faq-answer a {
  color: var(--faq-accent);
  text-decoration: none;
  transition: opacity var(--faq-transition);
}
.page-faq .faq-answer a:hover,
.page-faq .faq-answer a:focus-visible {
  opacity: 0.8;
  text-decoration: underline;
}

/* ===== 底部CTA ===== */
.page-faq .faq-cta {
  padding: 40px 0 60px;
  background: linear-gradient(180deg, #1A1A1A 0%, #0f0f0f 100%);
  text-align: center;
  border-top: 1px solid var(--faq-card-border);
}
.page-faq .faq-cta-text {
  font-size: 18px;
  font-weight: 500;
  color: var(--faq-text);
  margin: 0 0 18px;
}
.page-faq .btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  font-size: 15px;
  font-weight: 700;
  font-family: var(--font-heading, 'Inter','Helvetica Neue',sans-serif);
  color: #FFFFFF;
  background: linear-gradient(135deg, #C8102E 0%, #7F3FBF 100%);
  border: none;
  border-radius: 6px;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 20px rgba(200,16,46,0.25);
}
.page-faq .btn-primary:hover,
.page-faq .btn-primary:focus-visible {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 30px rgba(200,16,46,0.35);
}

/* ===== 响应式 ===== */
@media (max-width: 480px) {
  .page-faq .faq-hero {
    padding: 20px 0 32px;
  }
  .page-faq .faq-hero-title {
    font-size: 28px;
  }
  .page-faq .faq-hero-desc {
    font-size: 14px;
  }
  .page-faq .faq-search-input {
    padding: 11px 12px 11px 40px;
    font-size: 14px;
  }
  .page-faq .faq-tab-label {
    padding: 8px 14px;
    font-size: 13px;
  }
  .page-faq .faq-tab-label svg {
    width: 16px;
    height: 16px;
  }
  .page-faq .faq-question {
    font-size: 14px;
    padding: 14px 16px;
  }
  .page-faq .faq-question::after {
    right: 14px;
    width: 8px;
    height: 8px;
  }
  .page-faq .faq-answer {
    font-size: 14px;
  }
}
@media (min-width: 640px) {
  .page-faq .faq-tab-labels {
    gap: 12px;
  }
  .page-faq .faq-tab-label {
    padding: 12px 28px;
    font-size: 15px;
  }
  .page-faq .faq-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
    align-items: start;
  }
  .page-faq .faq-panel .faq-list {
    grid-column: 1 / -1;
  }
  /* 有图片的面板调整布局 */
  .page-faq #faq-panel-2 {
    grid-template-columns: 1fr 1fr;
  }
  .page-faq #faq-panel-2 .faq-img-block {
    grid-column: 1 / 2;
    grid-row: 1 / 3;
    margin-bottom: 0;
  }
  .page-faq #faq-panel-2 .faq-list {
    grid-column: 2 / 3;
  }
  .page-faq #faq-panel-3 {
    grid-template-columns: 1fr 1fr;
  }
  .page-faq #faq-panel-3 .faq-list {
    grid-column: 1 / 2;
  }
  .page-faq #faq-panel-3 .faq-img-block--bottom {
    grid-column: 2 / 3;
    grid-row: 1 / 2;
    margin-top: 0;
  }
}
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 40px 0 64px;
  }
  .page-faq .faq-hero-title {
    font-size: 46px;
  }
  .page-faq .faq-hero-desc {
    font-size: 18px;
    margin-bottom: 28px;
  }
  .page-faq .faq-tabs {
    padding: 48px 0 64px;
  }
  .page-faq .faq-tab-labels {
    justify-content: center;
    margin-bottom: 36px;
  }
  .page-faq .faq-question {
    padding: 18px 24px;
    font-size: 16px;
  }
  .page-faq .faq-answer {
    font-size: 15px;
  }
  .page-faq .faq-cta {
    padding: 50px 0 70px;
  }
  .page-faq .faq-cta-text {
    font-size: 20px;
  }
}
@media (min-width: 1024px) {
  .page-faq .faq-hero-title {
    font-size: 52px;
  }
  .page-faq .faq-hero::before {
    width: 500px;
    height: 500px;
  }
  .page-faq .faq-panel {
    max-width: var(--faq-max-width);
    margin: 0 auto;
  }
  .page-faq #faq-panel-2 {
    max-width: none;
    grid-template-columns: 1fr 1.2fr;
    gap: 36px;
  }
  .page-faq #faq-panel-3 {
    max-width: none;
    grid-template-columns: 1.2fr 1fr;
    gap: 36px;
  }
  .page-faq .faq-question {
    padding: 20px 28px;
  }
  .page-faq .faq-answer {
    padding: 0 28px;
  }
  .page-faq .faq-checkbox:checked ~ .faq-answer {
    padding: 0 28px 20px;
  }
}