.page-faq {
  --faq-number-color: var(--color-accent-green);
  --faq-icon-color: var(--color-accent-blue);
  --faq-toggle-color: var(--color-accent-blue);
  --faq-answer-gradient: linear-gradient(135deg, var(--color-card-bg), var(--color-primary-bg));
  --faq-card-radius: 12px;
  --faq-card-border: 1px solid var(--color-divider);

  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
  color: var(--color-text-primary);
  font-family: Inter, sans-serif;
}

/* 面包屑 */
.faq-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
  flex-wrap: wrap;
}

.faq-breadcrumb a {
  color: var(--color-accent-blue);
  text-decoration: none;
  transition: color 0.2s;
}

.faq-breadcrumb a:hover,
.faq-breadcrumb a:focus-visible {
  color: var(--color-accent-green);
  outline: var(--focus-outline);
  outline-offset: 2px;
  border-radius: 2px;
}

.faq-breadcrumb-sep {
  color: var(--color-text-secondary);
  user-select: none;
}

.faq-breadcrumb [aria-current="page"] {
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* Hero 区域 */
.faq-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
  padding: 1.5rem 0 0.5rem;
  border-bottom: 1px solid var(--color-divider);
}

.faq-hero-icon {
  width: 120px;
  height: auto;
  max-width: 100%;
  object-fit: contain;
  border-radius: 50%;
  background: var(--color-card-bg);
  padding: 0.75rem;
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.15);
  transition: box-shadow 0.3s;
}

.faq-hero-icon:hover {
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
}

.faq-hero-title {
  font-family: Playfair Display, serif;
  font-weight: 900;
  font-size: 2rem;
  line-height: 1.2;
  margin: 0;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.faq-hero-desc {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 540px;
  line-height: 1.6;
  margin: 0 0 0.5rem;
}

/* 问题列表容器 */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 0;
}

/* 每个问题卡片 */
.faq-item {
  background: var(--color-card-bg);
  border: var(--faq-card-border);
  border-radius: var(--faq-card-radius);
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.faq-item:hover {
  border-color: var(--color-accent-blue);
  box-shadow: 0 4px 16px rgba(0, 212, 255, 0.12);
}

.faq-item[open] {
  border-color: var(--color-accent-blue);
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.08);
}

/* 问题标题行 (summary) */
.faq-question {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background 0.2s;
  border-radius: var(--faq-card-radius);
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question:hover {
  background: rgba(0, 212, 255, 0.04);
}

.faq-question:focus-visible {
  outline: var(--focus-outline);
  outline-offset: -2px;
  border-radius: var(--faq-card-radius);
}

/* 编号 */
.faq-number {
  font-family: JetBrains Mono, monospace;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--faq-number-color);
  min-width: 2rem;
  text-align: right;
  line-height: 1;
  flex-shrink: 0;
}

/* 装饰图标 */
.faq-q-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--color-primary-bg);
  padding: 4px;
  box-sizing: content-box;
  border: 1px solid var(--color-divider);
}

/* 问题文本 */
.faq-q-text {
  font-family: Inter, sans-serif;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.4;
  color: var(--color-text-primary);
  flex: 1;
  letter-spacing: -0.01em;
}

/* 切换符号 */
.faq-toggle {
  font-family: JetBrains Mono, monospace;
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--faq-toggle-color);
  line-height: 1;
  flex-shrink: 0;
  transition: transform 0.3s ease;
  width: 1.2rem;
  text-align: center;
}

.faq-item[open] .faq-toggle {
  transform: rotate(45deg);
  content: "−";
}

/* 答案区域 */
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease, opacity 0.3s ease;
  opacity: 0;
  padding: 0 1.25rem;
  background: var(--faq-answer-gradient);
  border-top: 0 solid var(--color-divider);
}

.faq-item[open] .faq-answer {
  max-height: 600px;
  opacity: 1;
  padding: 1rem 1.25rem 1.5rem;
  border-top-width: 1px;
}

.faq-answer p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin: 0 0 0.85rem;
}

.faq-answer p:last-of-type {
  margin-bottom: 0;
}

.faq-answer a {
  color: var(--color-accent-blue);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s;
}

.faq-answer a:hover,
.faq-answer a:focus-visible {
  color: var(--color-accent-green);
  outline: var(--focus-outline);
  outline-offset: 2px;
  border-radius: 2px;
}

.faq-answer .btn-accent {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--color-accent-blue);
  color: var(--color-primary-bg);
  font-family: Inter, sans-serif;
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.5rem 1.2rem;
  border-radius: 6px;
  text-decoration: none;
  transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
  margin-top: 0.5rem;
}

.faq-answer .btn-accent:hover,
.faq-answer .btn-accent:focus-visible {
  background: var(--color-accent-green);
  box-shadow: 0 0 16px rgba(57, 255, 20, 0.25);
  transform: translateY(-1px);
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* 客服联系方式列表 */
.faq-contact-list {
  list-style: none;
  padding: 0;
  margin: 0 0 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.faq-contact-list li {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.faq-contact-list li strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.faq-contact-list a {
  color: var(--color-accent-blue);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.faq-contact-list a:hover {
  color: var(--color-accent-green);
}

/* 底部更多帮助区域 */
.faq-more {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.75rem;
  padding: 2rem 1.5rem;
  margin-top: 1rem;
  background: var(--color-card-bg);
  border-radius: var(--faq-card-radius);
  border: 1px solid var(--color-divider);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.faq-more-title {
  font-family: Playfair Display, serif;
  font-weight: 900;
  font-size: 1.5rem;
  line-height: 1.2;
  margin: 0;
  color: var(--color-text-primary);
}

.faq-more-desc {
  font-size: 1rem;
  color: var(--color-text-secondary);
  max-width: 480px;
  line-height: 1.6;
  margin: 0;
}

.faq-more .btn-accent {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-accent-blue);
  color: var(--color-primary-bg);
  font-family: Inter, sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.65rem 1.6rem;
  border-radius: 6px;
  text-decoration: none;
  transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
}

.faq-more .btn-accent:hover,
.faq-more .btn-accent:focus-visible {
  background: var(--color-accent-green);
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.25);
  transform: translateY(-2px);
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* ========== 移动端适配 (窄屏) ========== */
@media (max-width: 480px) {
  .page-faq {
    padding: 1rem 0.75rem 2rem;
    gap: 1.5rem;
  }

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

  .faq-hero-icon {
    width: 90px;
  }

  .faq-hero-desc {
    font-size: 0.95rem;
  }

  .faq-question {
    padding: 0.85rem 1rem;
    gap: 0.5rem;
  }

  .faq-number {
    font-size: 0.95rem;
    min-width: 1.5rem;
  }

  .faq-q-icon {
    width: 26px;
    height: 26px;
    padding: 3px;
  }

  .faq-q-text {
    font-size: 0.9rem;
  }

  .faq-toggle {
    font-size: 1.2rem;
  }

  .faq-item[open] .faq-answer {
    padding: 0.75rem 1rem 1.25rem;
  }

  .faq-answer p {
    font-size: 0.88rem;
  }

  .faq-more {
    padding: 1.5rem 1rem;
  }

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

  .faq-more-desc {
    font-size: 0.9rem;
  }

  .faq-answer .btn-accent,
  .faq-more .btn-accent {
    font-size: 0.85rem;
    padding: 0.45rem 1rem;
  }
}

/* ========== 桌面端适配 ========== */
@media (min-width: 768px) {
  .page-faq {
    padding: 2rem 2rem 4rem;
    gap: 2.5rem;
  }

  .faq-hero {
    padding: 2rem 0 1rem;
    gap: 1.25rem;
  }

  .faq-hero-icon {
    width: 160px;
    padding: 1rem;
  }

  .faq-hero-title {
    font-size: 2.6rem;
  }

  .faq-hero-desc {
    font-size: 1.15rem;
  }

  .faq-list {
    gap: 1.25rem;
    max-width: 860px;
    margin: 0 auto;
    width: 100%;
  }

  .faq-question {
    padding: 1.25rem 1.5rem;
    gap: 1rem;
  }

  .faq-number {
    font-size: 1.2rem;
    min-width: 2.2rem;
  }

  .faq-q-icon {
    width: 36px;
    height: 36px;
    padding: 5px;
  }

  .faq-q-text {
    font-size: 1.1rem;
  }

  .faq-toggle {
    font-size: 1.5rem;
  }

  .faq-item[open] .faq-answer {
    padding: 1.25rem 1.5rem 1.75rem;
  }

  .faq-answer p {
    font-size: 1rem;
  }

  .faq-more {
    padding: 2.5rem 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
  }

  .faq-more-title {
    font-size: 1.75rem;
  }

  .faq-more-desc {
    font-size: 1.05rem;
  }

  .faq-answer .btn-accent,
  .faq-more .btn-accent {
    font-size: 0.95rem;
    padding: 0.6rem 1.5rem;
  }
}

@media (min-width: 1024px) {
  .page-faq {
    padding: 2.5rem 3rem 5rem;
  }

  .faq-hero-title {
    font-size: 3rem;
  }

  .faq-hero-icon {
    width: 180px;
  }

  .faq-list {
    max-width: 900px;
  }
}

/* ========== 无障碍与打印 ========== */
@media (prefers-reduced-motion: reduce) {
  .faq-answer,
  .faq-toggle,
  .faq-item,
  .faq-hero-icon,
  .btn-accent {
    transition: none !important;
    animation: none !important;
  }
}

@media print {
  .page-faq {
    color: #000;
    background: #fff;
    padding: 1rem;
  }

  .faq-item {
    border: 1px solid #ccc;
    break-inside: avoid;
  }

  .faq-answer {
    max-height: none !important;
    opacity: 1 !important;
    padding: 0.75rem 1rem !important;
    border-top: 1px solid #ccc;
  }

  .faq-toggle {
    display: none;
  }

  .btn-accent {
    background: #eee;
    color: #000;
    border: 1px solid #999;
  }
}