/* ============ page-faq 专属样式 ============ */
.page-faq {
  --faq-gold: var(--color-secondary, #FFD700);
  --faq-primary: var(--color-primary, #8B0000);
  --faq-bg: var(--color-bg, #F5E6D0);
  --faq-dark: var(--color-dark, #1A1A1A);
  --faq-mid: var(--color-mid, #333333);
  --faq-glass: var(--color-glass, rgba(255,255,255,0.15));
  --faq-glass-border: var(--color-glass-border, rgba(0,0,0,0.1));
  --faq-shadow: var(--shadow-card, 0 4px 20px rgba(0,0,0,0.08));
  --faq-hover-shadow: var(--shadow-hover, 0 12px 40px rgba(0,0,0,0.15));
  --faq-radius: var(--border-radius, 4px);
  --faq-transition: var(--transition-med, 0.35s ease);

  background-color: var(--faq-bg);
  color: var(--faq-dark);
  font-family: var(--font-body, system-ui, sans-serif);
  padding-bottom: var(--space-2xl, 6rem);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding: var(--space-lg, 2rem) 0 var(--space-md, 1rem);
  font-size: 0.875rem;
  color: var(--faq-mid);
  display: flex;
  align-items: center;
  gap: var(--space-sm, 0.5rem);
  flex-wrap: wrap;
}

.page-faq .breadcrumb a {
  color: var(--faq-primary);
  text-decoration: none;
  transition: color var(--transition-fast, 0.2s);
  border-bottom: 1px solid transparent;
}

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

.page-faq .breadcrumb .separator {
  color: var(--faq-mid);
  opacity: 0.5;
}

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--faq-dark);
  font-weight: 600;
}

/* ---------- 框景区域 ---------- */
.page-faq .frame-viewport {
  position: relative;
  margin: 0 auto;
  max-width: var(--max-width, 1200px);
  padding: var(--space-lg, 2rem) var(--space-md, 1rem);
  border: 2px solid var(--faq-primary);
  border-radius: var(--faq-radius);
  background: linear-gradient(135deg, var(--faq-bg) 0%, rgba(139,0,0,0.04) 100%);
  overflow: hidden;
}

/* 双线边框效果 (外线) */
.page-faq .frame-viewport::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid var(--faq-gold);
  border-radius: calc(var(--faq-radius) - 2px);
  pointer-events: none;
  opacity: 0.35;
}

/* 角落刻度标记 */
.page-faq .frame-viewport::after {
  content: "";
  position: absolute;
  top: 12px;
  right: 12px;
  width: 24px;
  height: 24px;
  border-top: 2px solid var(--faq-gold);
  border-right: 2px solid var(--faq-gold);
  opacity: 0.6;
  pointer-events: none;
}

.page-faq .frame-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg, 2rem);
}

.page-faq .frame-content {
  flex: 1 1 380px;
  min-width: 0;
}

.page-faq .frame-content .section-number {
  display: inline-block;
  font-family: var(--font-number, 'Courier New', monospace);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--faq-gold);
  line-height: 1;
  margin-bottom: var(--space-xs, 0.25rem);
  letter-spacing: 0.04em;
}

.page-faq .frame-content h1 {
  font-family: var(--font-heading, Impact, sans-serif);
  font-size: clamp(2.2rem, 5.5vw, 3.6rem);
  font-weight: 700;
  color: var(--faq-primary);
  margin: 0 0 var(--space-sm, 0.5rem);
  letter-spacing: 0.03em;
  line-height: 1.1;
  text-transform: uppercase;
}

.page-faq .frame-content .subtitle {
  font-size: 1.05rem;
  color: var(--faq-mid);
  line-height: 1.6;
  margin: 0 0 var(--space-lg, 2rem);
  max-width: 540px;
}

.page-faq .search-box {
  position: relative;
  margin-bottom: var(--space-md, 1rem);
  max-width: 440px;
}

.page-faq .search-box .search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--faq-mid);
  pointer-events: none;
}

.page-faq .search-box input[type="text"] {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.6rem;
  border: 1.5px solid var(--faq-glass-border);
  border-radius: var(--faq-radius);
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(4px);
  font-family: var(--font-body, system-ui, sans-serif);
  font-size: 0.95rem;
  color: var(--faq-dark);
  transition: border-color var(--transition-fast, 0.2s), box-shadow var(--transition-fast, 0.2s);
  outline: none;
}

.page-faq .search-box input[type="text"]::placeholder {
  color: var(--faq-mid);
  opacity: 0.6;
}

.page-faq .search-box input[type="text"]:focus {
  border-color: var(--faq-primary);
  box-shadow: 0 0 0 3px rgba(139,0,0,0.12);
}

.page-faq .filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm, 0.5rem);
  margin-top: var(--space-sm, 0.5rem);
}

.page-faq .filter-tag {
  padding: 0.45rem 1.1rem;
  border: 1.5px solid var(--faq-glass-border);
  border-radius: 100px;
  background: var(--faq-glass);
  font-family: var(--font-body, system-ui, sans-serif);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--faq-mid);
  cursor: pointer;
  transition: background var(--transition-fast, 0.2s), color var(--transition-fast, 0.2s), border-color var(--transition-fast, 0.2s), box-shadow var(--transition-fast, 0.2s);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.page-faq .filter-tag:hover,
.page-faq .filter-tag:focus-visible {
  background: var(--faq-primary);
  color: #fff;
  border-color: var(--faq-primary);
  box-shadow: 0 2px 8px rgba(139,0,0,0.18);
}

.page-faq .filter-tag.active {
  background: var(--faq-primary);
  color: #fff;
  border-color: var(--faq-primary);
  box-shadow: 0 2px 10px rgba(139,0,0,0.22);
}

.page-faq .frame-decoration {
  flex: 0 0 auto;
  width: 200px;
  height: auto;
  max-width: 100%;
  border-radius: var(--faq-radius);
  object-fit: cover;
  opacity: 0.75;
  mix-blend-mode: multiply;
}

@media (min-width: 720px) {
  .page-faq .frame-decoration {
    width: 280px;
  }
}

/* ---------- FAQ 章节容器 ---------- */
.page-faq .faq-sections {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: 0 var(--space-md, 1rem);
}

/* ---------- 编号章节 ---------- */
.page-faq .faq-chapter {
  padding: var(--space-xl, 4rem) 0;
  position: relative;
}

/* 章节之间的斜切分割线 */
.page-faq .faq-chapter + .faq-chapter {
  border-top: 1px solid rgba(0,0,0,0.06);
  position: relative;
}

.page-faq .faq-chapter + .faq-chapter::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 80px;
  height: 3px;
  background: var(--faq-gold);
  clip-path: polygon(0 0, 100% 0, 80% 100%, 0 100%);
}

.page-faq .chapter-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg, 2rem);
  margin-bottom: var(--space-xl, 4rem);
}

.page-faq .chapter-header .section-number {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  font-family: var(--font-number, 'Courier New', monospace);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--faq-gold);
  background: var(--faq-primary);
  border-radius: 50%;
  line-height: 1;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 14px rgba(139,0,0,0.2);
}

.page-faq .chapter-intro {
  flex: 1;
  min-width: 0;
}

.page-faq .chapter-intro h2 {
  font-family: var(--font-heading, Impact, sans-serif);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  color: var(--faq-dark);
  margin: 0 0 var(--space-xs, 0.25rem);
  letter-spacing: 0.02em;
  line-height: 1.15;
  text-transform: uppercase;
}

.page-faq .chapter-intro .chapter-desc {
  font-size: 1rem;
  color: var(--faq-mid);
  line-height: 1.7;
  margin: 0;
  max-width: 540px;
}

.page-faq .chapter-img {
  display: block;
  width: 100%;
  max-width: 320px;
  height: auto;
  margin: var(--space-lg, 2rem) auto 0;
  border-radius: var(--faq-radius);
  object-fit: cover;
  opacity: 0.7;
  mix-blend-mode: multiply;
}

@media (min-width: 640px) {
  .page-faq .chapter-img {
    margin: var(--space-lg, 2rem) 0 0 auto;
  }
}

/* ---------- FAQ 问题列表 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md, 1rem);
}

/* ---------- 单个问题项 ---------- */
.page-faq .faq-item {
  background: #fff;
  border: 1px solid var(--faq-glass-border);
  border-radius: var(--faq-radius);
  box-shadow: var(--faq-shadow);
  transition: box-shadow var(--transition-fast, 0.2s), transform var(--transition-fast, 0.2s);
  position: relative;
  overflow: hidden;
}

/* 左侧索引线 */
.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--faq-gold);
  opacity: 0;
  transition: opacity var(--transition-med, 0.35s);
}

.page-faq .faq-item:hover::before,
.page-faq .faq-item:focus-within::before {
  opacity: 0.7;
}

.page-faq .faq-item:hover {
  box-shadow: var(--faq-hover-shadow);
  transform: translateY(-2px);
}

/* ---------- 问题按钮 ---------- */
.page-faq .faq-question {
  display: flex;
  align-items: center;
  gap: var(--space-md, 1rem);
  width: 100%;
  padding: var(--space-md, 1rem) var(--space-lg, 2rem);
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-body, system-ui, sans-serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--faq-dark);
  text-align: left;
  transition: background var(--transition-fast, 0.2s), color var(--transition-fast, 0.2s);
  -webkit-tap-highlight-color: transparent;
  position: relative;
  z-index: 1;
}

.page-faq .faq-question:hover,
.page-faq .faq-question:focus-visible {
  background: rgba(139,0,0,0.03);
  color: var(--faq-primary);
  outline: none;
}

.page-faq .faq-question:focus-visible {
  box-shadow: inset 0 0 0 2px var(--faq-gold);
}

.page-faq .faq-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  color: var(--faq-gold);
  transition: color var(--transition-fast, 0.2s);
}

.page-faq .faq-question:hover .faq-icon {
  color: var(--faq-primary);
}

.page-faq .faq-text {
  flex: 1;
  min-width: 0;
  line-height: 1.4;
}

.page-faq .faq-arrow {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: var(--faq-mid);
  transition: transform var(--transition-med, 0.35s), color var(--transition-fast, 0.2s);
}

.page-faq .faq-question[aria-expanded="true"] .faq-arrow {
  transform: rotate(180deg);
  color: var(--faq-primary);
}

.page-faq .faq-question:hover .faq-arrow {
  color: var(--faq-primary);
}

/* ---------- 答案面板 ---------- */
.page-faq .faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow, 0.5s ease), padding var(--transition-med, 0.35s ease), opacity var(--transition-med, 0.35s);
  opacity: 0;
  padding: 0 var(--space-lg, 2rem);
  border-top: 1px solid transparent;
}

.page-faq .faq-answer.open {
  max-height: 600px;
  opacity: 1;
  padding: var(--space-md, 1rem) var(--space-lg, 2rem) var(--space-lg, 2rem);
  border-top-color: rgba(0,0,0,0.05);
}

.page-faq .faq-answer p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--faq-mid);
}

.page-faq .faq-answer .contact-link {
  color: var(--faq-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast, 0.2s), color var(--transition-fast, 0.2s);
  font-weight: 500;
}

.page-faq .faq-answer .contact-link:hover,
.page-faq .faq-answer .contact-link:focus-visible {
  border-bottom-color: var(--faq-gold);
  color: var(--faq-gold);
}

/* ---------- 联系卡片 ---------- */
.page-faq .contact-card {
  margin-top: var(--space-xl, 4rem);
  padding: var(--space-lg, 2rem) var(--space-lg, 2rem);
  border-radius: var(--faq-radius);
  background: var(--faq-glass);
  backdrop-filter: blur(8px);
  border: 1px solid var(--faq-glass-border);
  box-shadow: var(--faq-shadow);
  display: flex;
  flex-direction: column;
  gap: var(--space-md, 1rem);
}

@media (min-width: 540px) {
  .page-faq .contact-card {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
  }
}

.page-faq .contact-card-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs, 0.25rem);
  min-width: 140px;
}

.page-faq .contact-card .contact-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--faq-mid);
  opacity: 0.6;
}

.page-faq .contact-card .contact-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--faq-dark);
  word-break: break-word;
}

.page-faq .contact-card .contact-note {
  width: 100%;
  font-size: 0.8rem;
  color: var(--faq-mid);
  opacity: 0.7;
  line-height: 1.6;
  margin: var(--space-sm, 0.5rem) 0 0;
  border-top: 1px solid var(--faq-glass-border);
  padding-top: var(--space-md, 1rem);
}

/* ---------- 底部导航 ---------- */
.page-faq .back-home {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md, 1rem);
  margin-top: var(--space-2xl, 6rem);
  padding-top: var(--space-xl, 4rem);
  border-top: 2px solid var(--faq-glass-border);
}

.page-faq .back-home .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.8rem;
  font-family: var(--font-body, system-ui, sans-serif);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--faq-radius);
  text-decoration: none;
  transition: background var(--transition-fast, 0.2s), color var(--transition-fast, 0.2s), box-shadow var(--transition-fast, 0.2s);
  cursor: pointer;
}

.page-faq .back-home .btn-secondary {
  background: transparent;
  border: 1.5px solid var(--faq-primary);
  color: var(--faq-primary);
}

.page-faq .back-home .btn-secondary:hover,
.page-faq .back-home .btn-secondary:focus-visible {
  background: var(--faq-primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(139,0,0,0.2);
}

/* ---------- 响应式微调 ---------- */
@media (max-width: 480px) {
  .page-faq .frame-viewport {
    padding: var(--space-md, 1rem);
    border-width: 1.5px;
  }

  .page-faq .frame-viewport::before {
    inset: 4px;
  }

  .page-faq .frame-content h1 {
    font-size: 1.9rem;
  }

  .page-faq .chapter-header {
    flex-direction: column;
    gap: var(--space-md, 1rem);
  }

  .page-faq .chapter-header .section-number {
    width: 48px;
    height: 48px;
    font-size: 1.6rem;
  }

  .page-faq .faq-question {
    padding: var(--space-sm, 0.5rem) var(--space-md, 1rem);
    font-size: 0.925rem;
  }

  .page-faq .faq-answer.open {
    padding: var(--space-sm, 0.5rem) var(--space-md, 1rem) var(--space-md, 1rem);
  }

  .page-faq .faq-icon {
    width: 22px;
    height: 22px;
  }

  .page-faq .contact-card {
    padding: var(--space-md, 1rem);
  }
}

@media (min-width: 768px) {
  .page-faq .faq-chapter {
    padding: var(--space-2xl, 6rem) 0;
  }

  .page-faq .faq-list {
    max-width: 780px;
  }

  .page-faq .faq-item::before {
    width: 5px;
  }

  .page-faq .frame-decoration {
    width: 320px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-sections {
    padding: 0;
  }

  .page-faq .chapter-header .section-number {
    width: 72px;
    height: 72px;
    font-size: 2.6rem;
  }

  .page-faq .chapter-intro h2 {
    font-size: 2.6rem;
  }

  .page-faq .faq-question {
    padding: var(--space-lg, 2rem) var(--space-xl, 4rem);
    font-size: 1.05rem;
  }

  .page-faq .faq-answer.open {
    padding: var(--space-md, 1rem) var(--space-xl, 4rem) var(--space-lg, 2rem);
  }

  .page-faq .faq-answer p {
    font-size: 1rem;
  }
}