/* ===== 页面专属作用域：.page-faq ===== */
.page-faq {
  --faq-gold: var(--accent-gold, #F4A261);
  --faq-red: var(--primary-red, #E63946);
  --faq-dark: var(--dark-bg, #0B132B);
  --faq-section-light: var(--section-bg-light, #1A2A4A);
  --faq-section-alt: var(--section-bg-alt, #233554);
  --faq-text: var(--text-primary, #FFFFFF);
  --faq-text-muted: var(--text-secondary, #B0BEC5);
  --faq-font-heading: var(--font-heading, "Oswald", "Impact", sans-serif);
  --faq-font-body: var(--font-body, "Inter", system-ui, sans-serif);
  --faq-border-radius: 6px;
  --faq-transition-speed: 0.3s;
}

/* 辅助隐藏 */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ===== HERO 横幅 ===== */
.faq-hero {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--faq-dark);
}

.faq-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  opacity: 0.7;
  transform: scale(1.02);
  transition: transform 0.6s ease-out;
}

.faq-hero:hover .faq-hero__bg {
  transform: scale(1.05);
}

.faq-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,27,59,0.85) 0%, rgba(230,57,70,0.35) 100%);
  z-index: 1;
}

.faq-hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 1.5rem;
  max-width: var(--content-max-width, 1200px);
  width: 100%;
}

.faq-breadcrumb {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.6rem;
  font-family: var(--faq-font-body);
  font-size: 0.8rem;
  color: var(--faq-text-muted);
}

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

.faq-breadcrumb a:hover,
.faq-breadcrumb a:focus-visible {
  color: var(--faq-gold);
}

.faq-breadcrumb__sep {
  opacity: 0.5;
}

.faq-hero__title {
  font-family: var(--faq-font-heading);
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.1;
  text-transform: uppercase;
  color: var(--faq-text);
  margin: 0 0 0.25rem;
  letter-spacing: 2px;
  text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
}

.faq-hero__desc {
  font-family: var(--faq-font-body);
  font-size: 1rem;
  color: var(--faq-text-muted);
  margin: 0;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  opacity: 0.9;
}

/* ===== 手风琴容器 ===== */
.faq-container {
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  padding: 2rem 1.25rem 1.5rem;
  background: var(--faq-dark);
}

/* ===== 分类面板 ===== */
.faq-category {
  display: block;
  margin-bottom: 0.75rem;
  border: none;
  border-radius: var(--faq-border-radius);
  overflow: hidden;
  background: var(--faq-section-light);
  box-shadow: 0 2px 12px rgba(0,0,0,0.25);
  transition: box-shadow var(--faq-transition-speed);
}

.faq-category[open] {
  box-shadow: 0 4px 24px rgba(230,57,70,0.15);
}

.faq-category__header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 1.25rem;
  background: var(--faq-gold);
  color: var(--faq-dark);
  font-family: var(--faq-font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background var(--faq-transition-speed), color var(--faq-transition-speed);
}

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

.faq-category__header::marker {
  display: none;
  content: "";
}

.faq-category__header:hover,
.faq-category__header:focus-visible {
  background: #e0944e;
}

.faq-category__marker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--faq-dark);
  transition: transform var(--faq-transition-speed) ease;
}

.faq-category[open] .faq-category__marker {
  transform: rotate(90deg);
}

.faq-category__num {
  font-family: var(--faq-font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  opacity: 0.6;
  letter-spacing: 0;
  flex-shrink: 0;
  min-width: 1.8rem;
}

.faq-category__label {
  flex: 1;
}

.faq-category__body {
  padding: 0.25rem 1rem 1rem;
  background: var(--faq-section-light);
  border-top: 2px solid rgba(244,162,97,0.25);
}

/* ===== 问答项 ===== */
.faq-item {
  display: block;
  margin-top: 0.5rem;
  border-bottom: 1px solid rgba(176,190,197,0.12);
  border-radius: 4px;
  overflow: hidden;
  background: transparent;
  transition: background var(--faq-transition-speed);
}

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

.faq-item[open] {
  background: rgba(26,42,74,0.6);
}

.faq-item__header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 0.5rem 0.7rem 0;
  font-family: var(--faq-font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--faq-text);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: color var(--faq-transition-speed);
  border-radius: 4px;
}

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

.faq-item__header::marker {
  display: none;
  content: "";
}

.faq-item__header:hover,
.faq-item__header:focus-visible {
  color: var(--faq-gold);
}

.faq-item__marker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--faq-gold);
  transition: transform var(--faq-transition-speed) ease;
}

.faq-item[open] .faq-item__marker {
  transform: rotate(90deg);
}

.faq-item__q {
  flex: 1;
  line-height: 1.4;
}

.faq-item__body {
  padding: 0 0.5rem 0.9rem 1.8rem;
  font-family: var(--faq-font-body);
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--faq-text-muted);
}

.faq-item__body p {
  margin: 0 0 0.6rem;
}

.faq-item__body p:last-child {
  margin-bottom: 0;
}

.faq-item__body a {
  color: var(--faq-gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--faq-transition-speed), color var(--faq-transition-speed);
}

.faq-item__body a:hover,
.faq-item__body a:focus-visible {
  color: var(--faq-red);
  border-bottom-color: var(--faq-red);
}

/* ===== 图片嵌入 ===== */
.faq-figure {
  margin: 0.8rem 0 0;
  padding: 0;
  text-align: center;
}

.faq-figure__img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
  display: block;
  margin: 0 auto;
}

.faq-figure__cap {
  margin-top: 0.4rem;
  font-family: var(--faq-font-body);
  font-size: 0.8rem;
  color: var(--faq-text-muted);
  font-style: italic;
  opacity: 0.75;
}

/* ===== 结尾区域 ===== */
.faq-outro {
  background: var(--faq-section-alt);
  padding: 2rem 1.25rem;
  text-align: center;
}

.faq-outro__inner {
  max-width: 600px;
  margin: 0 auto;
}

.faq-outro__text {
  font-family: var(--faq-font-body);
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--faq-text);
  margin: 0 0 1.2rem;
}

.faq-outro__btn {
  display: inline-block;
  padding: 0.75rem 2.2rem;
  font-family: var(--faq-font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-decoration: none;
  color: var(--faq-text);
  background: var(--faq-red);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background var(--faq-transition-speed), transform 0.15s ease;
}

.faq-outro__btn:hover,
.faq-outro__btn:focus-visible {
  background: #C1272D;
  transform: translateY(-2px);
}

/* ===== 移动端优先适配 ===== */
@media (max-width: 640px) {
  .faq-hero {
    height: 170px;
  }

  .faq-hero__title {
    font-size: 2rem;
    letter-spacing: 1px;
  }

  .faq-hero__desc {
    font-size: 0.85rem;
  }

  .faq-container {
    padding: 1.25rem 0.75rem 1rem;
  }

  .faq-category__header {
    padding: 0.7rem 1rem;
    font-size: 1.05rem;
    gap: 0.4rem;
  }

  .faq-category__num {
    font-size: 0.75rem;
    min-width: 1.4rem;
  }

  .faq-category__body {
    padding: 0.15rem 0.75rem 0.75rem;
  }

  .faq-item__header {
    font-size: 0.88rem;
    padding: 0.6rem 0.25rem 0.6rem 0;
  }

  .faq-item__body {
    font-size: 0.85rem;
    padding: 0 0.25rem 0.7rem 1.5rem;
  }

  .faq-figure__img {
    max-width: 75%;
  }

  .faq-outro {
    padding: 1.5rem 0.75rem;
  }

  .faq-outro__text {
    font-size: 1rem;
  }

  .faq-outro__btn {
    font-size: 1rem;
    padding: 0.65rem 1.8rem;
  }
}

/* ===== 桌面端增强 ===== */
@media (min-width: 768px) {
  .faq-hero {
    height: 220px;
  }

  .faq-hero__title {
    font-size: 3.6rem;
    letter-spacing: 3px;
  }

  .faq-hero__desc {
    font-size: 1.1rem;
  }

  .faq-container {
    padding: 2.5rem 2rem 2rem;
  }

  .faq-category__header {
    padding: 1rem 1.5rem;
    font-size: 1.5rem;
  }

  .faq-category__body {
    padding: 0.5rem 1.5rem 1.25rem;
  }

  .faq-item__header {
    font-size: 1rem;
    padding: 0.8rem 0.75rem 0.8rem 0;
  }

  .faq-item__body {
    font-size: 0.95rem;
    padding: 0 0.75rem 1rem 2rem;
  }
}

@media (min-width: 1024px) {
  .faq-hero {
    height: 240px;
  }

  .faq-hero__title {
    font-size: 4.2rem;
  }

  .faq-container {
    padding: 3rem 2.5rem 2.5rem;
  }
}

/* ===== 滚动显现动画（渐进增强） ===== */
@media (prefers-reduced-motion: no-preference) {
  .page-faq [data-reveal] {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
  }

  .page-faq [data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
  }

  .faq-item__body {
    animation: faqFadeIn 0.35s ease-out;
  }

  @keyframes faqFadeIn {
    from {
      opacity: 0;
      transform: translateY(-6px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .faq-item__body {
    animation: none;
  }

  .faq-category__marker,
  .faq-item__marker {
    transition: none;
  }
}