/* ===== 页面专属：.page-faq ===== */
.page-faq {
  --faq-hero-min-height: 280px;
  --faq-index-width: 260px;
  --faq-gap: 48px;
  --faq-block-gap: 32px;
  --faq-item-gap: 16px;
  --faq-radius: var(--radius-lg);
  --faq-category-radius: 40px;
  --faq-accent-bg: var(--color-accent);
  --faq-accent-hover: var(--color-primary);
  --faq-answer-padding: 24px;
  --faq-decor-size: 8px;

  background: var(--color-bg-dark);
  color: var(--color-text-light);
  position: relative;
}

/* ----- Hero 区域 ----- */
.page-faq .faq-hero {
  position: relative;
  min-height: var(--faq-hero-min-height);
  display: flex;
  align-items: flex-end;
  padding: 48px 0 24px;
  overflow: hidden;
}

.page-faq .faq-hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero-img-right {
  position: absolute;
  right: 12%;
  bottom: 0;
  width: 240px;
  height: auto;
  opacity: 0.20;
  object-fit: contain;
  z-index: 1;
}

.page-faq .faq-hero-img-left {
  position: absolute;
  left: 0;
  top: 0;
  width: 80px;
  height: 100%;
  object-fit: cover;
  opacity: 0.10;
  z-index: 1;
}

.page-faq .faq-hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
}

.page-faq .breadcrumb {
  font-family: var(--font-nav);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: rgba(255,255,255,0.5);
  margin-bottom: 12px;
}

.page-faq .breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.page-faq .breadcrumb .separator {
  margin: 0 8px;
  color: rgba(255,255,255,0.3);
}

.page-faq .faq-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  font-style: italic;
  line-height: 1.2;
  color: var(--color-text-light);
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.page-faq .faq-subtitle {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.6;
  color: rgba(255,255,255,0.7);
  max-width: 640px;
  margin: 0;
}

/* ----- 左右分屏布局 ----- */
.page-faq .faq-layout {
  display: flex;
  gap: var(--faq-gap);
  padding-top: 0;
  padding-bottom: 64px;
  align-items: flex-start;
  position: relative;
  z-index: 2;
}

/* ----- 左侧索引 ----- */
.page-faq .faq-index {
  flex: 0 0 var(--faq-index-width);
  min-width: 0;
}

.page-faq .faq-index-sticky {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-faq .faq-index-heading {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0;
}

.page-faq .faq-category-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-category-btn {
  display: block;
  font-family: var(--font-nav);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--color-text-light);
  background: var(--faq-accent-bg);
  padding: 12px 24px;
  border-radius: var(--faq-category-radius);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
  border: none;
  text-align: center;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 16px rgba(255,107,53,0.25);
}

.page-faq .faq-category-btn:hover,
.page-faq .faq-category-btn:focus-visible {
  background: var(--faq-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(11,29,58,0.40);
  color: var(--color-text-light);
  outline: none;
}

.page-faq .faq-category-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.page-faq .faq-index-decor {
  display: flex;
  gap: 10px;
  margin-top: 8px;
}

.page-faq .faq-decor-dot {
  display: inline-block;
  width: var(--faq-decor-size);
  height: var(--faq-decor-size);
  border-radius: 50%;
  background: var(--color-accent);
  opacity: 0.3;
}

.page-faq .faq-decor-dot:nth-child(2) {
  background: var(--color-primary-light);
  opacity: 0.5;
}

.page-faq .faq-decor-dot:nth-child(3) {
  background: var(--color-chart-3);
  opacity: 0.4;
}

/* ----- 右侧答案区域 ----- */
.page-faq .faq-answers {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--faq-block-gap);
}

/* ----- 问题块 ----- */
.page-faq .faq-block {
  display: flex;
  flex-direction: column;
  gap: var(--faq-item-gap);
}

.page-faq .faq-block-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 4px;
}

.page-faq .faq-block-icon {
  font-family: var(--font-data);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  opacity: 0.6;
}

.page-faq .faq-block-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  font-style: italic;
  color: var(--color-text-light);
  margin: 0;
  letter-spacing: -0.01em;
}

/* ----- 单个问答项 ----- */
.page-faq .faq-item {
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding-bottom: var(--faq-item-gap);
}

.page-faq .faq-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-faq .faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  background: transparent;
  border: none;
  padding: 14px 0;
  cursor: pointer;
  color: var(--color-text-light);
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 500;
  text-align: left;
  transition: color var(--transition);
  border-radius: 0;
}

.page-faq .faq-question:hover,
.page-faq .faq-question:focus-visible {
  color: var(--color-accent);
  outline: none;
}

.page-faq .faq-question:focus-visible {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-faq .faq-q-text {
  flex: 1;
  line-height: 1.5;
}

.page-faq .faq-q-icon {
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-data);
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--color-accent);
  border: 1px solid rgba(255,107,53,0.3);
  border-radius: 50%;
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
}

.page-faq .faq-question[aria-expanded="true"] .faq-q-icon {
  transform: rotate(45deg);
  background: rgba(255,107,53,0.12);
  border-color: var(--color-accent);
}

/* ----- 答案内容 ----- */
.page-faq .faq-answer {
  overflow: hidden;
  transition: max-height 0.35s ease, opacity 0.3s ease;
}

.page-faq .faq-answer[hidden] {
  display: block;
  max-height: 0;
  opacity: 0;
  padding: 0;
  margin: 0;
  visibility: hidden;
}

.page-faq .faq-answer:not([hidden]) {
  max-height: 800px;
  opacity: 1;
  visibility: visible;
}

.page-faq .faq-answer-inner {
  padding: var(--faq-answer-padding);
  margin-top: 4px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-family: var(--font-body);
  font-size: 0.98rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.85);
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--faq-radius);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

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

.page-faq .faq-answer-img {
  width: 100%;
  max-width: 240px;
  height: auto;
  border-radius: var(--radius-md);
  object-fit: cover;
  align-self: flex-start;
  border: 1px solid rgba(255,255,255,0.08);
}

.page-faq .data-highlight {
  font-family: var(--font-data);
  font-weight: 700;
  color: var(--color-accent);
  background: rgba(255,107,53,0.10);
  padding: 0 6px;
  border-radius: 4px;
  letter-spacing: 0.02em;
}

.page-faq .faq-answer-meta {
  font-family: var(--font-nav);
  font-size: 0.78rem;
  font-weight: 500;
  color: rgba(255,255,255,0.35);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding-top: 8px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.page-faq .faq-answer-inner a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition);
}

.page-faq .faq-answer-inner a:hover,
.page-faq .faq-answer-inner a:focus-visible {
  color: var(--color-accent-hover);
}

/* ----- 联系支持卡片 ----- */
.page-faq .faq-support {
  margin-top: 16px;
  padding: 32px 28px;
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--faq-radius);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.page-faq .faq-support-inner {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-faq .faq-support-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  font-style: italic;
  color: var(--color-text-light);
  margin: 0;
}

.page-faq .faq-support-text {
  font-family: var(--font-body);
  font-size: 0.98rem;
  line-height: 1.6;
  color: rgba(255,255,255,0.7);
  margin: 0;
}

.page-faq .faq-support-channels {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 36px;
  padding: 8px 0 4px;
}

.page-faq .faq-channel {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-channel-label {
  font-family: var(--font-nav);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.3);
}

.page-faq .faq-channel-link,
.page-faq .faq-channel-value {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-accent);
  text-decoration: none;
}

.page-faq .faq-channel-link:hover,
.page-faq .faq-channel-link:focus-visible {
  text-decoration: underline;
  color: var(--color-accent-hover);
}

.page-faq .faq-channel-value {
  color: rgba(255,255,255,0.75);
}

.page-faq .faq-support-btn {
  align-self: flex-start;
  margin-top: 4px;
  font-family: var(--font-nav);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 12px 32px;
  border-radius: var(--radius-md);
  background: var(--color-accent);
  color: var(--color-text-light);
  border: none;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 16px rgba(255,107,53,0.30);
}

.page-faq .faq-support-btn:hover,
.page-faq .faq-support-btn:focus-visible {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(255,107,53,0.40);
  outline: none;
}

.page-faq .faq-support-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* ----- 容器覆盖（确保内边距） ----- */
.page-faq .container {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== 移动端优先（窄屏） ===== */
@media (max-width: 767px) {
  .page-faq {
    --faq-hero-min-height: 200px;
    --faq-index-width: 100%;
    --faq-gap: 32px;
    --faq-block-gap: 28px;
    --faq-answer-padding: 18px;
  }

  .page-faq .faq-hero {
    padding: 36px 0 16px;
  }

  .page-faq .faq-hero-img-right {
    width: 140px;
    right: 4%;
    opacity: 0.12;
  }

  .page-faq .faq-hero-img-left {
    width: 40px;
    opacity: 0.06;
  }

  .page-faq .faq-title {
    font-size: 1.6rem;
  }

  .page-faq .faq-subtitle {
    font-size: 0.9rem;
  }

  .page-faq .faq-layout {
    flex-direction: column;
    gap: var(--faq-gap);
    padding-bottom: 48px;
  }

  .page-faq .faq-index {
    flex: none;
    width: 100%;
  }

  .page-faq .faq-index-sticky {
    position: static;
    gap: 14px;
  }

  .page-faq .faq-category-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 10px;
  }

  .page-faq .faq-category-btn {
    font-size: 0.85rem;
    padding: 10px 20px;
  }

  .page-faq .faq-index-decor {
    display: none;
  }

  .page-faq .faq-block-title {
    font-size: 1.25rem;
  }

  .page-faq .faq-question {
    font-size: 0.95rem;
    padding: 12px 0;
  }

  .page-faq .faq-answer-inner {
    font-size: 0.9rem;
    padding: 16px;
  }

  .page-faq .faq-answer-img {
    max-width: 100%;
  }

  .page-faq .faq-support {
    padding: 24px 18px;
  }

  .page-faq .faq-support-title {
    font-size: 1.2rem;
  }

  .page-faq .faq-support-channels {
    flex-direction: column;
    gap: 14px;
  }

  .page-faq .faq-support-btn {
    width: 100%;
    text-align: center;
  }

  .page-faq .container {
    padding-left: 16px;
    padding-right: 16px;
  }
}

/* ===== 桌面增强 ===== */
@media (min-width: 768px) and (max-width: 1023px) {
  .page-faq {
    --faq-index-width: 200px;
    --faq-gap: 32px;
  }

  .page-faq .faq-hero-img-right {
    width: 180px;
    right: 6%;
  }

  .page-faq .faq-category-btn {
    font-size: 0.88rem;
    padding: 10px 18px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-answer-inner {
    padding: 28px 32px;
  }

  .page-faq .faq-answer-img {
    max-width: 280px;
  }
}

/* ===== 确保所有图片响应式 ===== */
.page-faq img {
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===== 平滑滚动（渐进增强） ===== */
@media (prefers-reduced-motion: no-preference) {
  .page-faq {
    scroll-behavior: smooth;
  }
}

/* ===== 键盘焦点全局风格 ===== */
.page-faq :focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}