/* ===== 页面专属 CSS — .page-faq ===== */
.page-faq {
  --faq-hero-bg: linear-gradient(135deg, var(--clr-dark) 0%, #0f1e2c 100%);
  --faq-accent-line: var(--clr-primary);
  --faq-card-bg: var(--clr-white);
  --faq-card-radius: var(--radius-lg);
  --faq-shadow: var(--shadow-md);
  --faq-narrow-max: 740px;
  --faq-wide-max: 960px;
  --faq-deco-z: 0;
  color: var(--clr-text);
  font-family: var(--font-primary);
  background-color: var(--clr-light);
  position: relative;
  overflow-x: hidden;
}

/* ---------- 容器 ---------- */
.page-faq .container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-md);
  padding-top: var(--space-md);
}
.page-faq .breadcrumb a {
  color: var(--clr-primary-light);
  text-decoration: none;
  transition: color var(--transition);
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--clr-primary);
  text-decoration: underline;
}
.page-faq .breadcrumb__sep {
  margin: 0 var(--space-xs);
  opacity: 0.5;
}
.page-faq .breadcrumb [aria-current="page"] {
  color: var(--clr-white);
  font-weight: 600;
}

/* ---------- Hero ---------- */
.page-faq .faq-hero {
  background: var(--faq-hero-bg);
  padding: var(--space-xl) 0 var(--space-lg);
  position: relative;
}
.page-faq .faq-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent), var(--clr-primary-light));
}
.page-faq .faq-hero__title {
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--clr-white);
  margin: 0 0 var(--space-sm);
  line-height: 1.1;
}
.page-faq .faq-hero__desc {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.8);
  margin: 0 0 var(--space-lg);
  font-weight: 400;
}

/* ---------- 搜索框 ---------- */
.page-faq .faq-search {
  position: relative;
  max-width: 560px;
}
.page-faq .faq-search__input {
  width: 100%;
  padding: 0.9rem 1.2rem 0.9rem 3rem;
  border: 2px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.08);
  color: var(--clr-white);
  font-size: 1rem;
  font-family: var(--font-primary);
  outline: none;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
  appearance: none;
}
.page-faq .faq-search__input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}
.page-faq .faq-search__input:focus {
  border-color: var(--clr-primary);
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.2);
}
.page-faq .faq-search__icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(255, 255, 255, 0.5);
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- 分类快速导航 ---------- */
.page-faq .faq-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-md);
  padding-top: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--clr-gray);
  margin-bottom: var(--space-xl);
}
.page-faq .faq-nav__link {
  display: inline-block;
  padding: 0.5rem 1.2rem;
  border-radius: 100px;
  background: var(--clr-white);
  border: 1px solid var(--clr-gray);
  color: var(--clr-dark);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition);
  letter-spacing: 0.02em;
}
.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  box-shadow: 0 2px 8px rgba(255, 107, 53, 0.15);
}
.page-faq .faq-nav__link:active {
  background: var(--clr-primary);
  color: var(--clr-white);
  border-color: var(--clr-primary);
}

/* ---------- 装饰线条 ---------- */
.page-faq .faq-deco {
  position: fixed;
  top: 40%;
  width: 100px;
  height: 300px;
  object-fit: cover;
  opacity: 0.15;
  pointer-events: none;
  z-index: var(--faq-deco-z);
  display: none;
}
.page-faq .faq-deco--left {
  left: -20px;
  transform: rotate(-6deg);
}
.page-faq .faq-deco--right {
  right: -20px;
  transform: rotate(6deg);
}

/* ---------- 问答区块容器 ---------- */
.page-faq .faq-sections {
  padding-bottom: var(--space-2xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2xl);
}

/* ---------- 单个区块 ---------- */
.page-faq .faq-section {
  width: 100%;
  background: var(--faq-card-bg);
  border-radius: var(--faq-card-radius);
  box-shadow: var(--faq-shadow);
  padding: var(--space-lg) var(--space-md);
  transition: box-shadow var(--transition);
}
.page-faq .faq-section:hover {
  box-shadow: var(--shadow-lg);
}
.page-faq .faq-section--narrow {
  max-width: var(--faq-narrow-max);
}
.page-faq .faq-section--wide {
  max-width: var(--faq-wide-max);
}

/* ---------- 区块标题 ---------- */
.page-faq .faq-section__title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--clr-dark);
  margin: 0 0 var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 3px solid var(--clr-primary);
  letter-spacing: -0.01em;
}
.page-faq .faq-section__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
}

/* ---------- 手风琴列表 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

/* ---------- 单个手风琴项 ---------- */
.page-faq .faq-item {
  border: 1px solid #e8e8e8;
  border-radius: var(--radius-md);
  background: var(--clr-white);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.page-faq .faq-item:hover {
  border-color: var(--clr-primary-light);
}
.page-faq .faq-item[open] {
  border-color: var(--clr-primary);
  box-shadow: 0 2px 12px rgba(255, 107, 53, 0.1);
}

/* ---------- 问题 (summary) ---------- */
.page-faq .faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: 1rem 1.2rem;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--clr-dark);
  cursor: pointer;
  list-style: none;
  transition: background var(--transition), color var(--transition);
  -webkit-user-select: none;
  user-select: none;
  position: relative;
}
.page-faq .faq-question::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item[open] .faq-question {
  background: var(--clr-dark);
  color: var(--clr-white);
}
/* 自定义箭头 */
.page-faq .faq-question::after {
  content: '+';
  flex-shrink: 0;
  width: 1.6rem;
  height: 1.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--clr-light);
  color: var(--clr-dark);
  font-size: 1.2rem;
  font-weight: 400;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}
.page-faq .faq-item[open] .faq-question::after {
  content: '−';
  background: var(--clr-primary);
  color: var(--clr-white);
  transform: rotate(90deg);
}

/* ---------- 答案 ---------- */
.page-faq .faq-answer {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.35s ease, opacity 0.3s ease, padding 0.3s ease;
  padding: 0 1.2rem;
  background: var(--clr-light);
  border-top: 0 solid transparent;
}
.page-faq .faq-item[open] .faq-answer {
  max-height: 600px;
  opacity: 1;
  padding: 1.2rem;
  border-top-width: 1px;
  border-top-color: var(--clr-primary);
}
.page-faq .faq-answer p {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.7;
  color: var(--clr-dark-gray);
}

/* ---------- 联系支持区块 ---------- */
.page-faq .faq-contact {
  margin-top: var(--space-sm);
}
.page-faq .faq-contact__intro {
  font-size: 1rem;
  color: var(--clr-dark-gray);
  margin: 0 0 var(--space-lg);
  line-height: 1.7;
}
.page-faq .faq-contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}
.page-faq .faq-contact__item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-md);
  background: var(--clr-light);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--clr-primary);
  transition: box-shadow var(--transition);
}
.page-faq .faq-contact__item:hover {
  box-shadow: var(--shadow-sm);
}
.page-faq .contact-label {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--clr-accent);
}
.page-faq .faq-contact__value {
  font-size: 1rem;
  font-weight: 500;
  color: var(--clr-dark);
  word-break: break-word;
}
.page-faq .faq-contact__item a.faq-contact__value {
  color: var(--clr-primary);
  text-decoration: none;
  transition: color var(--transition);
}
.page-faq .faq-contact__item a.faq-contact__value:hover,
.page-faq .faq-contact__item a.faq-contact__value:focus-visible {
  color: var(--clr-dark);
  text-decoration: underline;
}
.page-faq .faq-contact__note {
  margin: var(--space-lg) 0 0;
  font-size: 0.9rem;
  color: var(--clr-dark-gray);
  padding: var(--space-sm) var(--space-md);
  background: rgba(76, 175, 80, 0.08);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--clr-accent);
}

/* ===== 响应式 ===== */
/* 窄屏：移动端优先 */
@media (max-width: 767px) {
  .page-faq .faq-hero__title {
    font-size: 2rem;
  }
  .page-faq .faq-hero__desc {
    font-size: 1rem;
  }
  .page-faq .faq-search__input {
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    font-size: 0.95rem;
  }
  .page-faq .faq-nav {
    gap: var(--space-xs);
    padding-top: var(--space-md);
    padding-bottom: var(--space-md);
  }
  .page-faq .faq-nav__link {
    font-size: 0.8rem;
    padding: 0.35rem 0.9rem;
  }
  .page-faq .faq-section {
    padding: var(--space-md);
  }
  .page-faq .faq-section__title {
    font-size: 1.3rem;
  }
  .page-faq .faq-question {
    font-size: 0.95rem;
    padding: 0.85rem 1rem;
  }
  .page-faq .faq-item[open] .faq-answer {
    padding: 1rem;
  }
  .page-faq .faq-contact__grid {
    gap: var(--space-sm);
  }
  .page-faq .faq-deco {
    display: none;
  }
}

/* 平板及以上 */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: var(--space-2xl) 0 var(--space-xl);
  }
  .page-faq .faq-hero__title {
    font-size: 3.2rem;
  }
  .page-faq .faq-hero__desc {
    font-size: 1.25rem;
  }
  .page-faq .faq-section {
    padding: var(--space-xl) var(--space-lg);
  }
  .page-faq .faq-section__title {
    font-size: 1.8rem;
  }
  .page-faq .faq-contact__grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-faq .faq-deco {
    display: block;
  }
}

/* 桌面端：手风琴展开时左右排列 (问题窄 / 答案宽) */
@media (min-width: 900px) {
  .page-faq .faq-item[open] {
    display: flex;
    flex-direction: row;
    align-items: stretch;
  }
  .page-faq .faq-item[open] .faq-question {
    width: 36%;
    flex-shrink: 0;
    border-right: 2px solid var(--clr-primary);
    justify-content: flex-start;
    background: var(--clr-dark);
    color: var(--clr-white);
    padding: 1.2rem 1.5rem;
    border-radius: var(--radius-md) 0 0 var(--radius-md);
  }
  .page-faq .faq-item[open] .faq-question::after {
    display: none;
  }
  .page-faq .faq-item[open] .faq-answer {
    width: 64%;
    max-height: 600px;
    opacity: 1;
    padding: 1.2rem 1.5rem;
    border-top: none;
    border-left: none;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    display: flex;
    align-items: center;
  }
  .page-faq .faq-item[open] .faq-answer p {
    font-size: 1rem;
  }
  /* 装饰线条更可见 */
  .page-faq .faq-deco {
    opacity: 0.2;
  }
  .page-faq .faq-deco--left {
    left: -10px;
  }
  .page-faq .faq-deco--right {
    right: -10px;
  }
}

/* 大桌面端留白优化 */
@media (min-width: 1200px) {
  .page-faq .faq-hero__title {
    font-size: 3.8rem;
  }
  .page-faq .faq-section--narrow {
    padding-left: var(--space-2xl);
    padding-right: var(--space-2xl);
  }
  .page-faq .faq-section--wide {
    padding-left: var(--space-2xl);
    padding-right: var(--space-2xl);
  }
}