/* ===== MG竞技场 · FAQ页面专属样式 ===== */
.page-faq {
  --faq-index-width: 210px;
  --faq-gap: 32px;
  --faq-radius: var(--radius-md);
  --faq-bg-card: var(--color-card-bg);
  --faq-border: var(--color-divider);
  --faq-glow: var(--shadow-glow-purple);
  --faq-highlight: var(--color-accent-green);

  display: block;
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 24px 20px 60px;
  color: var(--color-text-primary);
  font-family: var(--font-body);
  line-height: 1.7;
}

/* 面包屑 */
.faq-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  padding: 8px 0;
  border-bottom: 1px solid var(--faq-border);
}
.faq-breadcrumb a {
  color: var(--color-accent-purple);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.faq-breadcrumb a:hover,
.faq-breadcrumb a:focus-visible {
  color: var(--color-hover-state);
  outline: 2px solid var(--color-accent-purple);
  outline-offset: 2px;
  border-radius: 2px;
}
.faq-breadcrumb-sep {
  color: var(--color-text-secondary);
  font-weight: bold;
}
.faq-breadcrumb [aria-current="page"] {
  color: var(--color-text-secondary);
  font-weight: 600;
}

/* ===== Hero ===== */
.faq-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 32px 16px 40px;
  background: radial-gradient(circle at 30% 40%, rgba(138,43,226,0.12) 0%, transparent 70%);
  border-bottom: 1px solid var(--faq-border);
  margin-bottom: 40px;
}
.faq-hero-icon {
  width: 120px;
  height: auto;
  max-width: 200px;
  margin-bottom: 16px;
  filter: drop-shadow(0 0 12px rgba(138,43,226,0.35));
  object-fit: contain;
}
.faq-hero-title {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 900;
  margin: 0 0 8px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-text-primary);
  text-shadow: 0 0 8px rgba(57,255,20,0.15);
}
.faq-hero-desc {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 480px;
  margin: 0 auto;
}

/* ===== 主体：索引 + 问答 ===== */
.faq-body {
  display: flex;
  flex-direction: column;
  gap: var(--faq-gap);
}

/* ----- 左侧索引（桌面粘性） ----- */
.faq-index {
  order: 0;
  flex-shrink: 0;
}
.faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: nowrap;
  gap: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--color-accent-purple) var(--faq-border);
  padding-bottom: 8px;
}
.faq-index-list::-webkit-scrollbar {
  height: 4px;
}
.faq-index-list::-webkit-scrollbar-thumb {
  background: var(--color-accent-purple);
  border-radius: var(--radius-capsule);
}
.faq-index-link {
  display: block;
  padding: 8px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  background: var(--faq-bg-card);
  border: 1px solid var(--faq-border);
  border-radius: var(--radius-capsule);
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--transition-fast);
}
.faq-index-link:hover,
.faq-index-link:focus-visible {
  color: var(--color-text-primary);
  background: rgba(138,43,226,0.18);
  border-color: var(--color-accent-purple);
  box-shadow: var(--faq-glow);
  outline: none;
}
.faq-index-link:focus-visible {
  outline: 2px solid var(--color-accent-purple);
  outline-offset: 2px;
}

/* ----- 右侧问答 ----- */
.faq-questions {
  order: 1;
  flex: 1;
  min-width: 0;
}

/* ===== 分类区块 ===== */
.faq-section {
  margin-bottom: 48px;
  scroll-margin-top: 80px;
}
.faq-section-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 900;
  margin: 0 0 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--faq-border);
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-text-primary);
}
.faq-section-num {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-accent-green);
  text-shadow: 0 0 8px rgba(57,255,20,0.25);
}

/* ===== 手风琴项 ===== */
.faq-item {
  background: var(--faq-bg-card);
  border: 1px solid var(--faq-border);
  border-radius: var(--faq-radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.faq-item:hover {
  border-color: rgba(138,43,226,0.35);
}
.faq-item[open] {
  border-color: var(--color-accent-purple);
  box-shadow: var(--faq-glow);
}

/* 问题行 */
.faq-question {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  list-style: none;
  user-select: none;
  transition: background var(--transition-fast);
}
.faq-question::-webkit-details-marker {
  display: none;
}
.faq-question::marker {
  display: none;
  content: "";
}
.faq-question:hover {
  background: rgba(138,43,226,0.08);
}
.faq-question:focus-visible {
  outline: 2px solid var(--color-accent-purple);
  outline-offset: -2px;
  border-radius: var(--faq-radius) var(--faq-radius) 0 0;
}

.faq-q-num {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  color: var(--color-accent-green);
  text-shadow: 0 0 6px rgba(57,255,20,0.2);
  flex-shrink: 0;
  min-width: 32px;
}

.faq-q-text {
  flex: 1;
}

.faq-q-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  position: relative;
  transition: transform var(--transition-smooth);
}
.faq-q-icon::before,
.faq-q-icon::after {
  content: "";
  position: absolute;
  background: var(--color-accent-purple);
  border-radius: 2px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.faq-q-icon::before {
  width: 2px;
  height: 12px;
}
.faq-q-icon::after {
  width: 12px;
  height: 2px;
}
details[open] .faq-q-icon {
  transform: rotate(45deg);
}

/* 答案区 */
.faq-answer {
  padding: 0 20px 16px;
  animation: faqFadeSlideIn 0.3s ease;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
}
.faq-answer p {
  margin: 0 0 8px;
}
.faq-answer p:last-child {
  margin-bottom: 0;
}
.faq-answer a {
  color: var(--color-accent-purple);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-fast);
}
.faq-answer a:hover {
  color: var(--color-hover-state);
}

@keyframes faqFadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== 高亮数字 ===== */
.highlight-green {
  color: var(--color-accent-green);
  text-shadow: 0 0 8px rgba(57,255,20,0.25);
  font-weight: 700;
}

/* ===== 配图 ===== */
.faq-figure {
  margin: 24px 0 8px;
  text-align: center;
  background: var(--faq-bg-card);
  border-radius: var(--faq-radius);
  padding: 16px;
  border: 1px solid var(--faq-border);
}
.faq-figure-img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  object-fit: cover;
  box-shadow: var(--shadow-card);
}
.faq-figure-caption {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  letter-spacing: 0.3px;
}

/* ===== 其他问题卡片 ===== */
.faq-other-card {
  background: var(--faq-bg-card);
  border: 1px solid var(--faq-border);
  border-radius: var(--faq-radius);
  padding: 24px 28px;
  box-shadow: var(--shadow-card);
}
.faq-other-card p {
  margin: 0 0 12px;
}
.faq-contact-list {
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 16px 32px;
}
.faq-contact-list li {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}
.faq-contact-list li strong {
  color: var(--color-text-primary);
  font-weight: 600;
}
.faq-contact-note {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}
.faq-contact-note a {
  color: var(--color-accent-purple);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===== 桌面端 (>= 768px) ===== */
@media (min-width: 768px) {
  .page-faq {
    padding: 32px 32px 80px;
  }

  .faq-hero {
    padding: 40px 24px 48px;
  }
  .faq-hero-title {
    font-size: 2.4rem;
  }
  .faq-hero-icon {
    width: 160px;
  }

  .faq-body {
    flex-direction: row;
    align-items: flex-start;
    gap: 40px;
  }

  /* 左侧索引：粘性侧栏 */
  .faq-index {
    order: 0;
    width: var(--faq-index-width);
    position: sticky;
    top: 100px; /* 为顶部工具栏留空间 */
    flex-shrink: 0;
  }
  .faq-index-list {
    flex-direction: column;
    gap: 8px;
    overflow-x: visible;
    padding-bottom: 0;
  }
  .faq-index-link {
    padding: 10px 18px;
    white-space: normal;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    border-left: 3px solid transparent;
  }
  .faq-index-link:hover,
  .faq-index-link:focus-visible {
    border-left-color: var(--color-accent-purple);
  }

  .faq-questions {
    order: 1;
    max-width: 780px;
  }

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

  .faq-item {
    margin-bottom: 14px;
  }
  .faq-question {
    padding: 18px 24px;
    font-size: 1.05rem;
  }
  .faq-answer {
    padding: 0 24px 20px;
    font-size: 1rem;
  }

  .faq-figure {
    padding: 20px;
  }
  .faq-figure-img {
    width: 400px;
  }

  .faq-other-card {
    padding: 28px 36px;
  }
  .faq-contact-list {
    flex-direction: row;
  }
}

/* ===== 大桌面端 (>= 1024px) ===== */
@media (min-width: 1024px) {
  .page-faq {
    padding: 40px 48px 100px;
  }

  .faq-hero {
    padding: 48px 32px 56px;
    margin-bottom: 48px;
  }
  .faq-hero-title {
    font-size: 2.8rem;
  }

  .faq-body {
    gap: 56px;
  }

  .faq-index {
    width: 230px;
  }
  .faq-index-link {
    padding: 12px 20px;
    font-size: 1rem;
  }

  .faq-questions {
    max-width: 820px;
  }
}

/* ===== 确保窄屏不溢出 ===== */
@media (max-width: 400px) {
  .page-faq {
    padding: 16px 12px 40px;
  }
  .faq-hero {
    padding: 20px 8px 28px;
  }
  .faq-hero-title {
    font-size: 1.4rem;
  }
  .faq-hero-icon {
    width: 80px;
  }
  .faq-question {
    padding: 12px 14px;
    font-size: 0.9rem;
    gap: 8px;
  }
  .faq-answer {
    padding: 0 14px 12px;
    font-size: 0.88rem;
  }
  .faq-q-num {
    min-width: 26px;
    font-size: 0.7rem;
  }
  .faq-section-title {
    font-size: 1.1rem;
  }
  .faq-index-link {
    padding: 6px 14px;
    font-size: 0.82rem;
  }
  .faq-other-card {
    padding: 16px 18px;
  }
  .faq-contact-list {
    flex-direction: column;
    gap: 8px;
  }
}