/* ==============================================
   帮助中心页面专属样式 (page-faq)
   作用域限定：.page-faq
   移动端优先 + 桌面媒体查询
   ============================================== */

/* ---- 全局作用域变量 ---- */
.page-faq {
  --faq-gold: var(--color-gold);
  --faq-red: var(--color-red);
  --faq-black: var(--color-black);
  --faq-dark-red: var(--color-dark-red);
  --faq-white: var(--color-white);
  --faq-gray-light: var(--color-gray-light);
  --faq-glass: var(--color-glass);
  --faq-gradient: var(--gradient-gold);
  --faq-font-heading: var(--font-heading);
  --faq-font-body: var(--font-body);
  --faq-transition: var(--transition-base);
  --faq-card-radius: 12px;
  --faq-card-border-left: 6px;
  --faq-max-width-card: 760px;
}

/* ---- 面包屑 ---- */
.page-faq__breadcrumb {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md) var(--space-sm);
  font-family: var(--faq-font-body);
  font-size: 0.875rem;
  color: var(--faq-white);
  opacity: 0.8;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}
.page-faq__breadcrumb .breadcrumb__link {
  color: var(--faq-gold);
  text-decoration: none;
  transition: color var(--faq-transition);
}
.page-faq__breadcrumb .breadcrumb__link:hover,
.page-faq__breadcrumb .breadcrumb__link:focus-visible {
  color: var(--faq-white);
  text-decoration: underline;
}
.page-faq__breadcrumb .breadcrumb__sep {
  color: var(--faq-gold);
  opacity: 0.6;
}
.page-faq__breadcrumb .breadcrumb__current {
  color: var(--faq-white);
  font-weight: 600;
}

/* ---- Hero 首屏 ---- */
.page-faq__hero {
  background-color: var(--faq-black);
  padding: var(--space-2xl) var(--space-md) var(--space-xl);
  position: relative;
  overflow: hidden;
}
.page-faq__hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 10%;
  right: 10%;
  height: 4px;
  background: var(--faq-gradient);
  border-radius: 2px;
}
.page-faq__hero-inner {
  text-align: center;
  position: relative;
  z-index: 1;
}
.page-faq__hero-title {
  font-family: var(--faq-font-heading);
  font-weight: 900;
  font-size: 2.8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--faq-white);
  margin: 0 0 var(--space-sm);
  line-height: 1.1;
  text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.page-faq__hero-sub {
  font-family: var(--faq-font-body);
  font-size: 1.15rem;
  color: var(--faq-gold);
  max-width: 600px;
  margin: 0 auto;
  font-weight: 400;
  opacity: 0.9;
}

/* ---- 问答卡片区 ---- */
.page-faq__questions {
  background-color: var(--faq-black);
  padding: var(--space-xl) var(--space-md) var(--space-2xl);
}
.page-faq__questions-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  max-width: var(--faq-max-width-card);
  margin: 0 auto;
}

/* ---- 单张问答卡片 (details/summary 手风琴) ---- */
.faq-card {
  display: block;
  background-color: #222;
  border-radius: var(--faq-card-radius);
  border-left: var(--faq-card-border-left) solid transparent;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  transition: border-color var(--faq-transition), background-color var(--faq-transition);
  overflow: hidden;
  /* 确保卡片可悬停 */
}
.faq-card:hover {
  border-left-color: var(--faq-gold);
  background-color: #2a2a2a;
}
.faq-card[open] {
  border-left-color: var(--faq-red);
}

/* ---- summary (问题标题行) ---- */
.faq-card__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-xl);
  cursor: pointer;
  list-style: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: background-color var(--faq-transition);
}
.faq-card__summary::-webkit-details-marker {
  display: none;
}
.faq-card__summary:hover {
  background-color: rgba(244, 196, 48, 0.06);
}
.faq-card__summary:focus-visible {
  outline: 2px solid var(--faq-gold);
  outline-offset: -2px;
  border-radius: var(--faq-card-radius) var(--faq-card-radius) 0 0;
}

.faq-card__q-text {
  font-family: var(--faq-font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--faq-gold);
  letter-spacing: 0.5px;
  line-height: 1.3;
}
.faq-card[open] .faq-card__q-text {
  color: var(--faq-white);
}

/* ---- 展开/折叠图标 ---- */
.faq-card__icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: rgba(244, 196, 48, 0.15);
  color: var(--faq-gold);
  transition: background-color var(--faq-transition), transform var(--faq-transition);
}
.faq-card__icon-plus,
.faq-card__icon-minus {
  display: block;
  transition: opacity var(--faq-transition), transform var(--faq-transition);
}
.faq-card__icon-minus {
  opacity: 0;
  position: absolute;
  transform: rotate(-90deg);
}
.faq-card[open] .faq-card__icon-plus {
  opacity: 0;
  transform: rotate(90deg);
}
.faq-card[open] .faq-card__icon-minus {
  opacity: 1;
  position: static;
  transform: rotate(0deg);
}
.faq-card__icon svg {
  display: block;
}

/* ---- 答案区域 ---- */
.faq-card__answer {
  padding: 0 var(--space-xl) var(--space-xl);
  color: var(--faq-white);
  font-family: var(--faq-font-body);
  line-height: 1.7;
}
.faq-card__answer-inner {
  border-top: 2px solid;
  border-image: var(--faq-gradient) 1;
  padding-top: var(--space-lg);
}
.faq-card__answer-text {
  margin: 0 0 var(--space-md);
  font-size: 1rem;
  color: #e0e0e0;
}
.faq-card__answer-text a.faq-card__link {
  color: var(--faq-gold);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--faq-transition);
}
.faq-card__answer-text a.faq-card__link:hover,
.faq-card__answer-text a.faq-card__link:focus-visible {
  color: var(--faq-white);
}
.faq-card__highlight {
  color: var(--faq-gold);
  font-weight: 700;
}

/* 提示文字 */
.faq-card__answer-tip {
  background-color: rgba(244, 196, 48, 0.08);
  border-left: 3px solid var(--faq-gold);
  padding: var(--space-sm) var(--space-md);
  border-radius: 0 6px 6px 0;
  font-size: 0.9rem;
  color: #ccc;
  margin-top: var(--space-md);
}
.faq-card__tip-label {
  font-weight: 700;
  color: var(--faq-gold);
}

/* 图片 */
.faq-card__figure {
  margin: var(--space-lg) 0 0;
  max-width: 100%;
}
.faq-card__img {
  display: block;
  width: 100%;
  max-width: 400px;
  height: auto;
  aspect-ratio: 400 / 200;
  object-fit: cover;
  border-radius: 8px;
  background-color: #333;
  box-shadow: 0 2px 12px rgba(0,0,0,0.5);
}
.faq-card__figcaption {
  font-size: 0.8rem;
  color: #999;
  margin-top: var(--space-xs);
  font-style: italic;
}

/* ---- 联系区域 ---- */
.page-faq__contact {
  background-color: #111;
  padding: var(--space-2xl) var(--space-md);
}
.page-faq__contact-inner {
  max-width: var(--faq-max-width-card);
  margin: 0 auto;
}
.page-faq__contact-card {
  background: linear-gradient(145deg, #1e1e1e, #2a2a2a);
  border-radius: var(--faq-card-radius);
  padding: var(--space-xl);
  text-align: center;
  border: 1px solid rgba(244, 196, 48, 0.15);
  box-shadow: 0 6px 30px rgba(0,0,0,0.5);
}
.page-faq__contact-title {
  font-family: var(--faq-font-heading);
  font-weight: 800;
  font-size: 1.75rem;
  color: var(--faq-white);
  margin: 0 0 var(--space-sm);
  letter-spacing: 1px;
}
.page-faq__contact-text {
  font-family: var(--faq-font-body);
  color: #bbb;
  font-size: 1rem;
  margin: 0 0 var(--space-lg);
}
.page-faq__contact-list {
  list-style: none;
  margin: 0 auto var(--space-md);
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  max-width: 400px;
}
.page-faq__contact-item {
  font-family: var(--faq-font-body);
  font-size: 0.95rem;
  color: #ddd;
  padding: var(--space-sm) var(--space-md);
  background-color: rgba(255,255,255,0.04);
  border-radius: 6px;
  border-left: 3px solid var(--faq-gold);
  text-align: left;
}
.page-faq__contact-item a.faq-card__link {
  color: var(--faq-gold);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--faq-transition);
}
.page-faq__contact-item a.faq-card__link:hover,
.page-faq__contact-item a.faq-card__link:focus-visible {
  color: var(--faq-white);
}
.page-faq__contact-note {
  font-family: var(--faq-font-body);
  font-size: 0.85rem;
  color: #999;
  margin: 0 0 var(--space-lg);
  font-style: italic;
}
.page-faq__contact-btn {
  display: inline-block;
  background-color: var(--faq-red);
  color: var(--faq-white);
  font-family: var(--faq-font-heading);
  font-weight: 700;
  font-size: 1rem;
  padding: var(--space-sm) var(--space-xl);
  border-radius: 40px;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-decoration: none;
  border: 2px solid transparent;
  transition: background-color var(--faq-transition), border-color var(--faq-transition), transform var(--faq-transition);
}
.page-faq__contact-btn:hover,
.page-faq__contact-btn:focus-visible {
  background-color: var(--faq-dark-red);
  border-color: var(--faq-gold);
  transform: scale(1.03);
}

/* ==============================================
   桌面端媒体查询 (min-width: 768px)
   ============================================== */
@media (min-width: 768px) {
  .page-faq__breadcrumb {
    padding-left: 0;
    padding-right: 0;
    font-size: 0.95rem;
  }
  .page-faq__hero {
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-2xl);
  }
  .page-faq__hero-title {
    font-size: 4rem;
    letter-spacing: 4px;
  }
  .page-faq__hero-sub {
    font-size: 1.3rem;
  }
  .page-faq__questions {
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-2xl);
  }
  .faq-card__summary {
    padding: var(--space-xl) var(--space-xl);
  }
  .faq-card__q-text {
    font-size: 1.4rem;
  }
  .faq-card__answer {
    padding: 0 var(--space-xl) var(--space-xl);
  }
  .faq-card__answer-text {
    font-size: 1.05rem;
  }
  .page-faq__contact-card {
    padding: var(--space-2xl) var(--space-xl);
  }
  .page-faq__contact-title {
    font-size: 2rem;
  }
  .page-faq__contact-list {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 100%;
  }
  .page-faq__contact-item {
    flex: 0 1 auto;
    min-width: 200px;
    text-align: center;
    border-left-width: 4px;
  }
}

/* ==============================================
   大桌面端媒体查询 (min-width: 1024px)
   ============================================== */
@media (min-width: 1024px) {
  .page-faq__hero-title {
    font-size: 5rem;
  }
  .faq-card__q-text {
    font-size: 1.5rem;
  }
  .faq-card__answer-text {
    font-size: 1.1rem;
  }
  .page-faq__contact-card {
    padding: var(--space-2xl) var(--space-2xl);
  }
}

/* ---- 确保容器内边距在窄屏不溢出 ---- */
.page-faq .container,
.page-faq .container-narrow {
  padding-left: var(--space-md);
  padding-right: var(--space-md);
  box-sizing: border-box;
}
@media (min-width: 768px) {
  .page-faq .container,
  .page-faq .container-narrow {
    padding-left: 0;
    padding-right: 0;
  }
}