.page-faq {
  --faq-section-gap: 3rem;
  --faq-item-gap: 0.75rem;
  --faq-clip-size: 10px;
  --faq-border-color: var(--color-border, #4A2828);
  --faq-surface: var(--color-surface, #2D1B1B);
  --faq-surface-light: var(--color-surface-light, #3D2525);
  --faq-text: var(--color-text, #F5E6CC);
  --faq-text-muted: var(--color-text-muted, #C4A882);
  --faq-gold: var(--color-gold, #D4A017);
  --faq-gold-light: var(--color-gold-light, #F0C040);
  --faq-transition: var(--transition-speed, 0.25s) ease;

  padding: 2rem 1.25rem 3rem;
  max-width: 800px;
  margin: 0 auto;
  background-color: var(--color-bg, #1A0D0D);
  color: var(--faq-text);
  font-family: var(--font-body, 'PingFang SC', system-ui, sans-serif);
  line-height: 1.6;
}

/* ---------- 面包屑 ---------- */
.faq-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--faq-text-muted);
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

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

.faq-breadcrumb a:hover,
.faq-breadcrumb a:focus-visible {
  color: var(--faq-gold-light);
  outline: 2px solid var(--faq-gold);
  outline-offset: 2px;
}

.breadcrumb-sep {
  color: var(--faq-text-muted);
  user-select: none;
}

/* ---------- Hero 标题区 ---------- */
.faq-hero {
  position: relative;
  margin-bottom: 2.5rem;
  padding-top: 0.5rem;
}

.faq-hero-deco {
  position: absolute;
  right: 0;
  top: 0;
  width: 120px;
  height: auto;
  opacity: 0.4;
  pointer-events: none;
  max-width: 40%;
}

.faq-hero-title {
  font-family: var(--font-heading, 'STKaiti', serif);
  font-size: 2.5rem;
  font-weight: 700;
  margin: 0 0 0.25rem;
  color: var(--faq-text);
  letter-spacing: 0.04em;
}

.faq-hero-sub {
  font-size: 1.05rem;
  color: var(--faq-text-muted);
  margin: 0;
  padding-left: 0.2rem;
  border-left: 3px solid var(--faq-gold);
  padding-left: 0.75rem;
}

/* ---------- 分类区域 ---------- */
.faq-sections {
  display: flex;
  flex-direction: column;
  gap: var(--faq-section-gap);
}

.faq-section {
  scroll-margin-top: 2rem;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--faq-border-color);
  padding-bottom: 0.5rem;
}

.section-number {
  font-family: var(--font-heading, 'STKaiti', serif);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  background: var(--gradient-gold, linear-gradient(135deg, #D4A017, #F0C040));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.section-heading {
  font-family: var(--font-heading, 'STKaiti', serif);
  font-size: 1.35rem;
  font-weight: 600;
  margin: 0;
  color: var(--faq-text);
  letter-spacing: 0.03em;
}

/* ---------- 折叠面板列表 ---------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--faq-item-gap);
}

/* ---------- 单个折叠项 ---------- */
.faq-item {
  background-color: var(--faq-surface);
  border: 1px solid var(--faq-border-color);
  clip-path: polygon(0 0, calc(100% - var(--faq-clip-size)) 0, 100% var(--faq-clip-size), 100% 100%, 0 100%);
  transition: border-color var(--faq-transition), box-shadow var(--faq-transition);
  overflow: hidden;
}

.faq-item[open] {
  border-color: var(--faq-gold-dark, #B8860B);
  box-shadow: 0 0 0 1px rgba(212, 160, 23, 0.15);
}

.faq-item[open] .faq-question {
  color: var(--faq-gold-light);
  border-bottom: 1px solid var(--faq-border-color);
}

/* ---------- 问题标题 ---------- */
.faq-question {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  padding: 1rem 1.25rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--faq-text);
  list-style: none;
  transition: color var(--faq-transition), background-color var(--faq-transition);
  user-select: none;
  position: relative;
}

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

.faq-question::marker {
  display: none;
  content: '';
}

.faq-question::-moz-list-bullet {
  display: none;
}

.faq-question::after {
  content: '';
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--faq-gold);
  border-bottom: 2px solid var(--faq-gold);
  transform: rotate(45deg);
  transition: transform var(--faq-transition);
  flex-shrink: 0;
  margin-left: auto;
  opacity: 0.7;
}

.faq-item[open] .faq-question::after {
  transform: rotate(-135deg);
  opacity: 1;
}

.faq-question:hover {
  color: var(--faq-gold-light);
  background-color: var(--faq-surface-light);
}

.faq-question:focus-visible {
  outline: 2px solid var(--faq-gold);
  outline-offset: -2px;
  color: var(--faq-gold-light);
}

/* ---------- 答案内容 ---------- */
.faq-answer {
  padding: 1rem 1.25rem 1.25rem;
  font-size: 0.95rem;
  color: var(--faq-text-muted);
  line-height: 1.7;
  border-top: 1px solid transparent;
}

.faq-answer p {
  margin: 0 0 0.5rem;
}

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

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

.faq-answer a:hover,
.faq-answer a:focus-visible {
  color: var(--faq-gold-light);
  border-bottom-color: var(--faq-gold);
  outline: none;
}

.faq-answer a:focus-visible {
  outline: 2px solid var(--faq-gold);
  outline-offset: 2px;
}

/* ---------- 底部装饰 ---------- */
.faq-bottom-deco {
  margin-top: 3.5rem;
  text-align: center;
  opacity: 0.35;
}

.faq-wave-img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

/* ========== 桌面端增强 ========== */
@media (min-width: 768px) {
  .page-faq {
    padding: 3rem 2.5rem 4rem;
    max-width: 860px;
  }

  .faq-hero-title {
    font-size: 3.5rem;
  }

  .faq-hero-sub {
    font-size: 1.15rem;
    padding-left: 1rem;
  }

  .faq-hero-deco {
    width: 180px;
    opacity: 0.5;
  }

  .section-number {
    font-size: 2.5rem;
  }

  .section-heading {
    font-size: 1.5rem;
  }

  .faq-question {
    padding: 1.1rem 1.5rem;
    font-size: 1.05rem;
  }

  .faq-answer {
    padding: 1.1rem 1.5rem 1.35rem;
    font-size: 1rem;
  }

  .faq-item {
    --faq-clip-size: 12px;
  }

  .faq-bottom-deco {
    margin-top: 4.5rem;
  }

  .faq-wave-img {
    max-width: 70%;
  }
}

@media (min-width: 1024px) {
  .page-faq {
    padding: 3.5rem 3rem 5rem;
    max-width: 920px;
  }

  .faq-hero-title {
    font-size: 4rem;
  }

  .faq-hero-deco {
    width: 220px;
  }

  .faq-section-gap {
    --faq-section-gap: 4rem;
  }

  .section-number {
    font-size: 3rem;
  }
}

.page-faq {
  --faq-gold-dark: var(--color-gold-dark);
}