/* ===== 页面专属 CSS · .page-faq ===== */
/* 移动端优先，所有选择器限定在 .page-faq 作用域内 */

/* ---- 设计令牌（页面级变量） ---- */
.page-faq {
  --faq-gap: 1.25rem;
  --faq-radius: var(--radius);
  --faq-card-bg: rgba(240, 240, 240, 0.06);
  --faq-card-bg-open: rgba(240, 240, 240, 0.10);
  --faq-border-color: rgba(255, 215, 0, 0.15);
  --faq-icon-size: 1.25rem;
  --faq-number-size: 2rem;
}

/* ---- 面包屑 ---- */
.page-faq .breadcrumb {
  padding: 0.75rem 1.25rem;
  font-family: var(--font-accent);
  font-size: 0.75rem;
  color: var(--gold);
  background: transparent;
  letter-spacing: 0.04em;
}
.page-faq .breadcrumb a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  border-bottom-color: var(--gold);
  outline: none;
}
.page-faq .breadcrumb [aria-current="page"] {
  color: var(--text-light);
  opacity: 0.7;
}

/* ---- 首屏封面 ---- */
.page-faq .faq-hero {
  background: var(--bg-dark);
  padding: 2rem 1.25rem 2.5rem;
  border-bottom: 2px solid var(--faq-border-color);
  position: relative;
  overflow: hidden;
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 50% at 20% 30%, rgba(255, 59, 48, 0.08) 0%, transparent 70%),
              radial-gradient(ellipse 60% 40% at 80% 70%, rgba(255, 215, 0, 0.05) 0%, transparent 70%);
  pointer-events: none;
}
.page-faq .faq-hero-inner {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero-text .section-number {
  display: inline-block;
  font-family: var(--font-accent);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  margin-bottom: 0.5rem;
  border: 1px solid var(--accent);
  padding: 0.15rem 0.75rem;
  border-radius: 2px;
}
.page-faq .faq-hero-text .section-title {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--text-light);
  line-height: 1.05;
  margin: 0 0 0.5rem 0;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}
.page-faq .faq-hero-text .section-sub {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.75);
  max-width: 520px;
  margin: 0;
}

/* ---- 问题索引 ---- */
.page-faq .faq-index {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0;
  list-style: none;
}
.page-faq .faq-index-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 215, 0, 0.12);
  border-radius: var(--faq-radius);
  text-decoration: none;
  color: var(--text-light);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}
.page-faq .faq-index-item:hover,
.page-faq .faq-index-item:focus-visible {
  background: rgba(255, 59, 48, 0.08);
  border-color: var(--accent);
  transform: translateX(4px);
  outline: none;
}
.page-faq .faq-index-num {
  font-family: var(--font-accent);
  font-size: 0.75rem;
  color: var(--gold);
  min-width: 1.8rem;
  font-weight: 700;
}
.page-faq .faq-index-label {
  font-size: 0.9rem;
  line-height: 1.3;
}

/* ---- 问答列表 ---- */
.page-faq .faq-list {
  background: var(--bg-dark);
  padding: 1.5rem 1.25rem 3rem;
}
.page-faq .faq-list-inner {
  display: flex;
  flex-direction: column;
  gap: var(--faq-gap);
  max-width: 820px;
  margin: 0 auto;
}

/* ---- 单个问答卡片 ---- */
.page-faq .faq-item {
  background: var(--faq-card-bg);
  border: 1px solid var(--faq-border-color);
  border-radius: var(--faq-radius);
  transition: background var(--transition), border-color var(--transition);
  position: relative;
}
.page-faq .faq-item:has(.faq-radio:checked) {
  background: var(--faq-card-bg-open);
  border-color: rgba(255, 215, 0, 0.30);
}

/* ---- radio 隐藏 ---- */
.page-faq .faq-radio {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

/* ---- 问题行（可点击 label） ---- */
.page-faq .faq-question {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  user-select: none;
  transition: background var(--transition);
  border-radius: var(--faq-radius);
}
.page-faq .faq-question:hover {
  background: rgba(255, 255, 255, 0.03);
}
.page-faq .faq-radio:focus-visible + .faq-question {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}
.page-faq .faq-number {
  font-family: var(--font-accent);
  font-size: var(--faq-number-size);
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  min-width: 2.5rem;
  text-align: center;
  letter-spacing: -0.02em;
}
.page-faq .faq-title {
  flex: 1;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-light);
  line-height: 1.3;
  letter-spacing: 0.01em;
}
.page-faq .faq-icon {
  color: var(--accent);
  width: var(--faq-icon-size);
  height: var(--faq-icon-size);
  flex-shrink: 0;
  transition: transform var(--transition);
}
.page-faq .faq-radio:checked ~ .faq-question .faq-icon {
  transform: rotate(45deg);
  color: var(--gold);
}
.page-faq .faq-radio:checked ~ .faq-question .faq-icon svg path {
  stroke: var(--gold);
}

/* ---- 答案区域（折叠动画） ---- */
.page-faq .faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.22, 0.61, 0.36, 1),
              opacity 0.3s ease;
  opacity: 0;
}
.page-faq .faq-radio:checked ~ .faq-answer {
  max-height: 800px;
  opacity: 1;
}
.page-faq .faq-answer-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 0 1.25rem 1.25rem 1.25rem;
  align-items: flex-start;
}
.page-faq .faq-answer-text {
  flex: 1;
  min-width: 0;
}
.page-faq .faq-answer-text p {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  margin: 0 0 0.6rem 0;
}
.page-faq .faq-answer-text p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-answer-text strong {
  color: var(--gold);
  font-weight: 600;
}
.page-faq .faq-link {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}
.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  border-bottom-color: var(--accent);
  outline: none;
}

/* ---- 答案配图 ---- */
.page-faq .faq-answer-img {
  width: 100%;
  max-width: 200px;
  border-radius: calc(var(--faq-radius) + 2px);
  overflow: hidden;
  border: 1px solid rgba(255, 215, 0, 0.12);
  box-shadow: var(--shadow-card);
  margin-top: 0.25rem;
  flex-shrink: 0;
}
.page-faq .faq-answer-img img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-item:nth-child(2) .faq-answer-img {
  max-width: 300px;
}

/* ---- 桌面端 ≥768px ---- */
@media (min-width: 768px) {
  .page-faq .breadcrumb {
    padding: 0.75rem 2rem;
  }
  .page-faq .faq-hero {
    padding: 3rem 2rem 3.5rem;
  }
  .page-faq .faq-hero-inner {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
  }
  .page-faq .faq-hero-text .section-title {
    font-size: 3.8rem;
  }
  .page-faq .faq-hero-text .section-sub {
    font-size: 1.05rem;
  }
  .page-faq .faq-index {
    min-width: 260px;
    max-width: 340px;
  }
  .page-faq .faq-list {
    padding: 2.5rem 2rem 4rem;
  }
  .page-faq .faq-question {
    padding: 1.25rem 1.5rem;
  }
  .page-faq .faq-title {
    font-size: 1.2rem;
  }
  .page-faq .faq-number {
    font-size: 2.25rem;
    min-width: 3rem;
  }
  .page-faq .faq-answer-inner {
    flex-direction: row;
    align-items: flex-start;
    padding: 0 1.5rem 1.5rem 1.5rem;
  }
  .page-faq .faq-answer-img {
    margin-top: 0;
    margin-left: 1rem;
  }
  .page-faq .faq-item:nth-child(2) .faq-answer-img {
    max-width: 300px;
  }
}

/* ---- 大桌面端 ≥1024px ---- */
@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding: 4rem 3rem 4rem;
  }
  .page-faq .faq-hero-text .section-title {
    font-size: 4.5rem;
  }
  .page-faq .faq-list {
    padding: 3rem 3rem 5rem;
  }
  .page-faq .faq-list-inner {
    max-width: 880px;
  }
}

/* ---- 减少动效 ---- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-answer {
    transition: none;
  }
  .page-faq .faq-icon,
  .page-faq .faq-question,
  .page-faq .faq-index-item {
    transition: none;
  }
}