.page-faq {
  --faq-accent-glow: 0 0 30px rgba(245, 166, 35, 0.25);
  --faq-tab-radius: 12px;
  --faq-panel-radius: 16px;
  --faq-transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --faq-answer-bg: rgba(30, 26, 58, 0.6);
  --faq-border-subtle: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
  width: 100%;
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
  padding: calc(var(--header-top-height, 2.25rem) + var(--header-main-height, 3.5rem) + 2rem) var(--space-lg, 2rem) var(--space-2xl, 5rem);
  color: var(--clr-text-primary, #FFFFFF);
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  line-height: var(--line-height-body, 1.6);
  min-height: 100vh;
}

/* ===== 背景装饰 ===== */
.page-faq .faq-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  object-fit: cover;
  z-index: -1;
  pointer-events: none;
  opacity: 0.7;
  user-select: none;
}

/* ===== 面包屑 ===== */
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  font-size: 0.875rem;
  color: var(--clr-text-secondary, #BFB8D6);
}
.page-faq .breadcrumb__link {
  color: var(--clr-gold, #F5A623);
  text-decoration: none;
  transition: color var(--transition-base, 0.3s ease);
}
.page-faq .breadcrumb__link:hover,
.page-faq .breadcrumb__link:focus-visible {
  color: var(--clr-gold-light, #FFD773);
  text-decoration: underline;
  outline: none;
}
.page-faq .breadcrumb__separator {
  color: var(--clr-divider, rgba(255,255,255,0.12));
  font-size: 0.75rem;
}
.page-faq .breadcrumb__current {
  color: var(--clr-text-secondary, #BFB8D6);
  font-weight: 500;
}

/* ===== 页面头部 ===== */
.page-faq .faq-header {
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}
.page-faq .faq-heading {
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-weight: var(--font-weight-heading, 800);
  font-size: clamp(2.25rem, 5.5vw, 3.5rem);
  line-height: var(--line-height-heading, 1.1);
  color: var(--clr-text-primary, #FFFFFF);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
  text-shadow: 0 0 40px rgba(245, 166, 35, 0.15);
}
.page-faq .faq-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--clr-text-secondary, #BFB8D6);
  margin: 0 0 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== 搜索框 ===== */
.page-faq .faq-search {
  max-width: 520px;
  margin: 0 auto;
  position: relative;
}
.page-faq .faq-search__input {
  width: 100%;
  padding: 0.875rem 1.25rem;
  background: var(--clr-bg-card, #1E1A3A);
  border: var(--faq-border-subtle);
  border-radius: 50px;
  color: var(--clr-text-primary, #FFFFFF);
  font-size: 1rem;
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  outline: none;
  transition: all var(--transition-base, 0.3s ease);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
}
.page-faq .faq-search__input::placeholder {
  color: var(--clr-text-secondary, #BFB8D6);
  opacity: 0.7;
}
.page-faq .faq-search__input:focus {
  border-color: var(--clr-gold, #F5A623);
  box-shadow: var(--faq-accent-glow), 0 2px 12px rgba(0, 0, 0, 0.3);
  background: var(--clr-primary-200, #2D1B4E);
}

/* ===== 标签 + 面板布局 ===== */
.page-faq .faq-layout {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 3rem;
  position: relative;
}

/* ---- radio 隐藏 ---- */
.page-faq .faq-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
  opacity: 0;
  pointer-events: none;
}

/* ---- 标签栏 ---- */
.page-faq .faq-tabs {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.625rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--clr-gold, #F5A623) transparent;
  padding: 0.25rem 0 0.5rem;
  position: sticky;
  top: calc(var(--header-top-height, 2.25rem) + var(--header-main-height, 3.5rem) + 0.5rem);
  z-index: 5;
  background: rgba(13, 11, 30, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--faq-tab-radius);
  margin: 0 -0.25rem;
  padding-left: 0.25rem;
  padding-right: 0.25rem;
}
.page-faq .faq-tabs::-webkit-scrollbar {
  height: 4px;
}
.page-faq .faq-tabs::-webkit-scrollbar-thumb {
  background: var(--clr-gold, #F5A623);
  border-radius: 4px;
}
.page-faq .faq-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--clr-surface-overlay, rgba(255,255,255,0.08));
  border: var(--faq-border-subtle);
  border-radius: var(--faq-tab-radius);
  color: var(--clr-text-secondary, #BFB8D6);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  white-space: nowrap;
  cursor: pointer;
  transition: all var(--faq-transition);
  user-select: none;
  flex-shrink: 0;
}
.page-faq .faq-tab:hover {
  background: var(--clr-primary-200, #2D1B4E);
  border-color: var(--clr-gold, #F5A623);
  color: var(--clr-gold-light, #FFD773);
  box-shadow: var(--faq-accent-glow);
}
.page-faq .faq-tab:focus-visible {
  outline: 2px solid var(--clr-gold, #F5A623);
  outline-offset: 2px;
}
.page-faq .faq-tab__icon {
  font-size: 1.2em;
  line-height: 1;
  color: var(--clr-gold, #F5A623);
  transition: transform var(--faq-transition);
}
.page-faq .faq-tab:hover .faq-tab__icon {
  transform: scale(1.2);
}
.page-faq .faq-tab__label {
  letter-spacing: 0.01em;
}

/* ---- radio checked 高亮标签 ---- */
.page-faq #faq-cat-account:checked ~ .faq-tabs label[for="faq-cat-account"],
.page-faq #faq-cat-activity:checked ~ .faq-tabs label[for="faq-cat-activity"],
.page-faq #faq-cat-download:checked ~ .faq-tabs label[for="faq-cat-download"],
.page-faq #faq-cat-reward:checked ~ .faq-tabs label[for="faq-cat-reward"],
.page-faq #faq-cat-service:checked ~ .faq-tabs label[for="faq-cat-service"] {
  background: linear-gradient(135deg, var(--clr-primary-300, #4B2C7B), var(--clr-primary-400, #6A3E99));
  border-color: var(--clr-gold, #F5A623);
  color: var(--clr-text-primary, #FFFFFF);
  box-shadow: var(--faq-accent-glow), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}
.page-faq #faq-cat-account:checked ~ .faq-tabs label[for="faq-cat-account"] .faq-tab__icon,
.page-faq #faq-cat-activity:checked ~ .faq-tabs label[for="faq-cat-activity"] .faq-tab__icon,
.page-faq #faq-cat-download:checked ~ .faq-tabs label[for="faq-cat-download"] .faq-tab__icon,
.page-faq #faq-cat-reward:checked ~ .faq-tabs label[for="faq-cat-reward"] .faq-tab__icon,
.page-faq #faq-cat-service:checked ~ .faq-tabs label[for="faq-cat-service"] .faq-tab__icon {
  color: var(--clr-gold-light, #FFD773);
  transform: scale(1.15);
}

/* ---- 面板容器 ---- */
.page-faq .faq-panels {
  position: relative;
  min-height: 360px;
}

/* ---- 单个面板 ---- */
.page-faq .faq-panel {
  display: none;
  animation: faqFadeIn 0.45s ease forwards;
}

/* radio 控制面板显示 */
.page-faq #faq-cat-account:checked ~ .faq-panels .faq-panel[data-cat="account"],
.page-faq #faq-cat-activity:checked ~ .faq-panels .faq-panel[data-cat="activity"],
.page-faq #faq-cat-download:checked ~ .faq-panels .faq-panel[data-cat="download"],
.page-faq #faq-cat-reward:checked ~ .faq-panels .faq-panel[data-cat="reward"],
.page-faq #faq-cat-service:checked ~ .faq-panels .faq-panel[data-cat="service"] {
  display: block;
}

@keyframes faqFadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== 问题条目 (details) ===== */
.page-faq .faq-item {
  background: var(--faq-answer-bg);
  border: var(--faq-border-subtle);
  border-radius: var(--faq-panel-radius);
  margin-bottom: 0.875rem;
  overflow: hidden;
  transition: box-shadow var(--faq-transition);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}
.page-faq .faq-item:hover {
  box-shadow: var(--faq-accent-glow), 0 4px 16px rgba(0, 0, 0, 0.25);
}
.page-faq .faq-item[open] {
  box-shadow: var(--faq-accent-glow), 0 6px 24px rgba(0, 0, 0, 0.3);
  border-color: rgba(245, 166, 35, 0.25);
}

/* ---- 问题标题 ---- */
.page-faq .faq-question {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.125rem 1.5rem;
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--clr-text-primary, #FFFFFF);
  cursor: pointer;
  list-style: none;
  transition: color var(--transition-base, 0.3s ease);
  user-select: none;
}
.page-faq .faq-question::-webkit-details-marker {
  display: none;
}
.page-faq .faq-question::before {
  content: "?";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--clr-gold, #F5A623);
  color: var(--clr-primary-100, #1A0A2E);
  font-weight: 800;
  font-size: 0.9rem;
  flex-shrink: 0;
  line-height: 1;
  box-shadow: 0 0 12px rgba(245, 166, 35, 0.3);
  transition: transform var(--faq-transition), box-shadow var(--faq-transition);
}
.page-faq .faq-question::after {
  content: "+";
  margin-left: auto;
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--clr-gold, #F5A623);
  transition: transform var(--faq-transition), color var(--faq-transition);
  flex-shrink: 0;
  line-height: 1;
}
.page-faq .faq-item[open] .faq-question::after {
  content: "−";
  transform: rotate(180deg);
  color: var(--clr-gold-light, #FFD773);
}
.page-faq .faq-question:hover {
  color: var(--clr-gold-light, #FFD773);
}
.page-faq .faq-question:hover::before {
  transform: scale(1.1);
  box-shadow: 0 0 20px rgba(245, 166, 35, 0.45);
}
.page-faq .faq-question:focus-visible {
  outline: 2px solid var(--clr-gold, #F5A623);
  outline-offset: -2px;
  border-radius: var(--faq-panel-radius);
}

/* ---- 答案内容 ---- */
.page-faq .faq-answer {
  padding: 0 1.5rem 1.25rem 3.25rem;
  font-size: 0.975rem;
  color: var(--clr-text-secondary, #BFB8D6);
  line-height: var(--line-height-body, 1.6);
  border-top: 1px solid transparent;
  animation: faqAnswerSlide 0.35s ease forwards;
}
.page-faq .faq-item[open] .faq-answer {
  border-top-color: rgba(245, 166, 35, 0.15);
}
@keyframes faqAnswerSlide {
  from {
    opacity: 0;
    padding-top: 0;
    max-height: 0;
  }
  to {
    opacity: 1;
    padding-top: 1rem;
    max-height: 400px;
  }
}
.page-faq .faq-answer p {
  margin: 0 0 0.5rem;
}
.page-faq .faq-answer p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-answer a {
  color: var(--clr-gold, #F5A623);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-base, 0.3s ease);
}
.page-faq .faq-answer a:hover,
.page-faq .faq-answer a:focus-visible {
  color: var(--clr-gold-light, #FFD773);
  text-shadow: 0 0 12px rgba(245, 166, 35, 0.3);
}

/* ===== 联系客服入口 ===== */
.page-faq .faq-cta {
  margin-top: 2.5rem;
  background: linear-gradient(135deg, var(--clr-primary-200, #2D1B4E), var(--clr-primary-100, #1A0A2E));
  border: 1px solid rgba(245, 166, 35, 0.2);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
}
.page-faq .faq-cta__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  padding: 2rem 1.5rem;
}
.page-faq .faq-cta__content {
  text-align: center;
  flex: 1;
}
.page-faq .faq-cta__heading {
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-weight: var(--font-weight-heading, 800);
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  color: var(--clr-text-primary, #FFFFFF);
  margin: 0 0 0.75rem;
  letter-spacing: -0.01em;
}
.page-faq .faq-cta__text {
  color: var(--clr-text-secondary, #BFB8D6);
  font-size: 1rem;
  margin: 0 0 1.25rem;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}
.page-faq .faq-cta__contact {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-bottom: 1.5rem;
  align-items: center;
}
.page-faq .faq-cta__contact-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.925rem;
  color: var(--clr-text-secondary, #BFB8D6);
}
.page-faq .faq-cta__contact-icon {
  color: var(--clr-gold, #F5A623);
  font-size: 1.1rem;
  width: 1.4rem;
  text-align: center;
}
.page-faq .faq-cta__contact-item a {
  color: var(--clr-text-primary, #FFFFFF);
  text-decoration: none;
  transition: color var(--transition-base, 0.3s ease);
}
.page-faq .faq-cta__contact-item a:hover {
  color: var(--clr-gold, #F5A623);
}
.page-faq .faq-cta__btn {
  display: inline-block;
  padding: 0.75rem 2.5rem;
  font-size: 1rem;
  border-radius: 50px;
  text-decoration: none;
}
.page-faq .faq-cta__image {
  flex-shrink: 0;
  width: 100%;
  max-width: 360px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}
.page-faq .faq-cta__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 16px;
}

/* ===== 桌面端（>= 768px） ===== */
@media (min-width: 768px) {
  .page-faq {
    padding-left: var(--space-xl, 3rem);
    padding-right: var(--space-xl, 3rem);
  }
  .page-faq .faq-layout {
    flex-direction: row;
    align-items: flex-start;
    gap: 2rem;
  }
  .page-faq .faq-tabs {
    flex-direction: column;
    flex-shrink: 0;
    width: 200px;
    gap: 0.5rem;
    overflow-x: visible;
    position: sticky;
    top: calc(var(--header-top-height, 2.25rem) + var(--header-main-height, 3.5rem) + 1rem);
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    margin: 0;
    padding: 0;
  }
  .page-faq .faq-tab {
    width: 100%;
    white-space: normal;
    padding: 0.875rem 1.25rem;
  }
  .page-faq .faq-panels {
    flex: 1;
    min-width: 0;
  }
  .page-faq .faq-cta__inner {
    flex-direction: row;
    padding: 2.5rem 3rem;
    text-align: left;
  }
  .page-faq .faq-cta__content {
    text-align: left;
  }
  .page-faq .faq-cta__contact {
    align-items: flex-start;
  }
  .page-faq .faq-cta__image {
    max-width: 320px;
  }
}

/* ===== 大桌面端（>= 1024px） ===== */
@media (min-width: 1024px) {
  .page-faq .faq-tabs {
    width: 240px;
  }
  .page-faq .faq-cta__inner {
    padding: 3rem 4rem;
    gap: 2.5rem;
  }
  .page-faq .faq-cta__image {
    max-width: 380px;
  }
  .page-faq .faq-panels {
    padding-left: 0.5rem;
  }
}

/* ===== 减少运动偏好 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-panel,
  .page-faq .faq-answer,
  .page-faq .faq-tab,
  .page-faq .faq-tab__icon,
  .page-faq .faq-question::before,
  .page-faq .faq-question::after,
  .page-faq .faq-item {
    animation: none !important;
    transition: none !important;
  }
  .page-faq .faq-panel {
    animation: none !important;
  }
}