.page-faq {
  --faq-gold: #D4A843;
  --faq-red: #C23B22;
  --faq-dark-bg: #0A2342;
  --faq-dark-light: #0F2D52;
  --faq-light-bg: #F5F3EE;
  --faq-light-card: #FFFFFF;
  --faq-text-dark: #111111;
  --faq-text-on-dark: #FFFFFF;
  --faq-border: #2A3F5F;
  --faq-radius-lg: 24px;
  --faq-radius-sm: 16px;
  --faq-radius-capsule: 50px;
  --faq-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  font-family: "Source Sans Pro", Helvetica, Arial, sans-serif;
  color: var(--faq-text-on-dark);
  background: var(--faq-dark-bg);
  line-height: 1.6;
}

/* ===== 顶部英雄区 ===== */
.faq-hero {
  background: linear-gradient(145deg, #0A2342 0%, #132C52 60%, #1A3766 100%);
  padding: 2rem 1.25rem 2.5rem;
  position: relative;
  overflow: hidden;
}

.faq-hero::after {
  content: "";
  position: absolute;
  top: -40%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(212,168,67,0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.faq-hero__inner {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.faq-hero__breadcrumb {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.55);
  margin-bottom: 0.75rem;
  letter-spacing: 0.03em;
}

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

.faq-hero__breadcrumb a:hover {
  color: #e8c060;
}

.faq-hero__sep {
  margin: 0 0.4rem;
  opacity: 0.5;
}

.faq-hero__title {
  font-family: "Arial Black", Impact, "Franklin Gothic Bold", sans-serif;
  font-size: 2.6rem;
  line-height: 1.1;
  color: var(--faq-gold);
  margin: 0 0 0.6rem;
  letter-spacing: -0.01em;
  text-shadow: 0 2px 12px rgba(212,168,67,0.2);
}

.faq-hero__desc {
  font-size: 1rem;
  color: rgba(255,255,255,0.85);
  max-width: 30em;
  margin: 0 0 1.5rem;
  line-height: 1.7;
}

/* ===== 快速索引标签 ===== */
.faq-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.faq-tabs__item {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  border: 2px solid var(--faq-gold);
  border-radius: var(--faq-radius-capsule);
  color: var(--faq-gold);
  font-family: "Arial Black", Impact, "Franklin Gothic Bold", sans-serif;
  font-size: 0.85rem;
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: all var(--faq-transition);
  background: transparent;
}

.faq-tabs__item:hover {
  background: var(--faq-gold);
  color: var(--faq-dark-bg);
  border-color: var(--faq-gold);
}

.faq-tabs__item:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

/* ===== 通用区块 ===== */
.faq-section {
  padding: 2.5rem 1.25rem;
}

.faq-section__inner {
  max-width: 860px;
  margin: 0 auto;
  position: relative;
}

.faq-section--dark {
  background: var(--faq-dark-bg);
}

.faq-section--light {
  background: var(--faq-light-bg);
  color: var(--faq-text-dark);
}

.faq-section__title {
  font-family: "Arial Black", Impact, "Franklin Gothic Bold", sans-serif;
  font-size: 1.8rem;
  color: var(--faq-gold);
  margin: 0 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.faq-section__title--light {
  color: var(--faq-dark-bg);
}

.faq-section__num {
  font-size: 1rem;
  color: var(--faq-red);
  font-family: "Courier New", Courier, monospace;
  letter-spacing: 0.05em;
  opacity: 0.7;
}

.faq-section--light .faq-section__num {
  color: var(--faq-red);
}

/* ===== 装饰图标 ===== */
.faq-section__decor {
  position: absolute;
  right: 0;
  top: 0;
  pointer-events: none;
  opacity: 0.3;
}

.faq-section__icon {
  display: block;
  width: 100px;
  height: 100px;
  object-fit: contain;
  border-radius: var(--faq-radius-sm);
}

/* ===== 手风琴列表 ===== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* ===== 单个手风琴项 ===== */
.faq-item {
  background: rgba(255,255,255,0.04);
  border-radius: var(--faq-radius-lg);
  border: 1px solid rgba(255,255,255,0.06);
  overflow: hidden;
  transition: border-color var(--faq-transition);
}

.faq-item--light {
  background: var(--faq-light-card);
  border-color: rgba(0,0,0,0.06);
}

.faq-item[open] {
  border-color: var(--faq-gold);
}

.faq-item--light[open] {
  border-color: var(--faq-dark-bg);
}

.faq-item__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  list-style: none;
  font-family: "Arial Black", Impact, "Franklin Gothic Bold", sans-serif;
  font-size: 1rem;
  color: var(--faq-gold);
  line-height: 1.4;
  user-select: none;
  transition: background var(--faq-transition);
}

.faq-item--light .faq-item__q {
  color: var(--faq-dark-bg);
}

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

.faq-item__q:hover {
  background: rgba(212,168,67,0.06);
}

.faq-item--light .faq-item__q:hover {
  background: rgba(10,35,66,0.04);
}

.faq-item__q-text {
  flex: 1;
}

/* ===== 自定义展开/收起图标 ===== */
.faq-item__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  position: relative;
  transition: transform var(--faq-transition);
}

.faq-item__icon::before,
.faq-item__icon::after {
  content: "";
  position: absolute;
  background: var(--faq-gold);
  border-radius: 2px;
  transition: all var(--faq-transition);
}

.faq-item--light .faq-item__icon::before,
.faq-item--light .faq-item__icon::after {
  background: var(--faq-dark-bg);
}

.faq-item__icon::before {
  width: 16px;
  height: 2px;
  top: 11px;
  left: 4px;
}

.faq-item__icon::after {
  width: 2px;
  height: 16px;
  top: 4px;
  left: 11px;
}

.faq-item[open] .faq-item__icon {
  transform: rotate(45deg);
}

.faq-item[open] .faq-item__icon::after {
  height: 0;
}

/* ===== 答案区域 ===== */
.faq-item__a {
  padding: 0 1.25rem 1.25rem;
  color: var(--faq-text-on-dark);
  font-size: 0.95rem;
  line-height: 1.7;
  animation: faqFadeIn 0.3s ease;
}

.faq-item--light .faq-item__a {
  color: var(--faq-text-dark);
}

@keyframes faqFadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

.faq-item__list {
  margin: 0.4rem 0 0.6rem;
  padding-left: 1.4rem;
  list-style-type: disc;
}

.faq-item__list li {
  margin-bottom: 0.3rem;
}

.faq-item__list .data-mono {
  font-family: "Courier New", Courier, monospace;
  color: var(--faq-gold);
  font-size: 0.9rem;
  background: rgba(212,168,67,0.1);
  padding: 0 0.4rem;
  border-radius: 4px;
}

.faq-item--light .faq-item__list .data-mono {
  color: var(--faq-dark-bg);
  background: rgba(10,35,66,0.06);
}

.faq-item__a-cta {
  margin-top: 0.6rem;
}

.faq-item__link {
  display: inline-block;
  color: var(--faq-gold);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  border-bottom: 1px solid transparent;
  transition: all var(--faq-transition);
}

.faq-item__link:hover {
  border-bottom-color: var(--faq-gold);
  color: #e8c060;
}

.faq-item--light .faq-item__link {
  color: var(--faq-dark-bg);
}

.faq-item--light .faq-item__link:hover {
  color: var(--faq-red);
  border-bottom-color: var(--faq-red);
}

/* ===== 老用户专区视觉区 ===== */
.faq-legacy-visual {
  margin: 0 0 1.5rem;
  text-align: center;
}

.faq-legacy-visual__img {
  display: block;
  width: 100%;
  max-width: 600px;
  height: auto;
  aspect-ratio: 600 / 300;
  object-fit: cover;
  border-radius: var(--faq-radius-lg);
  margin: 0 auto;
  box-shadow: 0 8px 32px rgba(0,0,0,0.25);
  background: rgba(212,168,67,0.08);
}

.faq-legacy-visual__caption {
  margin-top: 0.6rem;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  font-style: italic;
  letter-spacing: 0.02em;
}

/* ===== 响应式：桌面端 ===== */
@media (min-width: 768px) {
  .faq-hero {
    padding: 3.5rem 2.5rem 3rem;
  }

  .faq-hero__title {
    font-size: 3.8rem;
  }

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

  .faq-tabs {
    gap: 0.8rem;
  }

  .faq-tabs__item {
    font-size: 0.95rem;
    padding: 0.6rem 1.6rem;
  }

  .faq-section {
    padding: 3.5rem 2.5rem;
  }

  .faq-section__title {
    font-size: 2.2rem;
    gap: 0.8rem;
  }

  .faq-section__num {
    font-size: 1.2rem;
  }

  .faq-section__decor {
    opacity: 0.5;
  }

  .faq-list {
    gap: 1rem;
  }

  .faq-item__q {
    padding: 1.2rem 1.5rem;
    font-size: 1.1rem;
  }

  .faq-item__a {
    padding: 0 1.5rem 1.5rem;
    font-size: 1rem;
  }

  .faq-legacy-visual {
    margin: 0 0 2rem;
  }

  .faq-legacy-visual__img {
    border-radius: 28px;
  }
}

@media (min-width: 1024px) {
  .faq-hero__title {
    font-size: 4.2rem;
  }

  .faq-section__inner {
    max-width: 920px;
  }

  .faq-section__decor {
    right: -20px;
  }
}