/* ===== page-faq 专属样式 ===== */
.page-faq {
  --faq-grid-unit: 8px;
  --faq-accordion-border: var(--primary);
  --faq-badge-bg: var(--secondary);
  --faq-badge-text: var(--white);
  --faq-hero-overlay: linear-gradient(135deg, rgba(76,175,80,0.08) 0%, rgba(255,152,0,0.04) 100%);
  --faq-card-radius: 12px;
  --faq-accordion-radius: 10px;

  display: block;
  max-width: 1200px;
  margin: 0 auto;
  padding: calc(var(--faq-grid-unit) * 2) var(--faq-grid-unit) calc(var(--faq-grid-unit) * 6);
  font-family: var(--font-sans);
  color: var(--neutral-dark);
  background-color: var(--neutral-light);
  position: relative;
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--faq-grid-unit);
  font-size: 14px;
  color: var(--neutral-mid);
  padding: calc(var(--faq-grid-unit) * 1.5) 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: calc(var(--faq-grid-unit) * 3);
}

.page-faq .breadcrumb a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.page-faq .breadcrumb a:hover {
  color: var(--primary-dark);
}

.page-faq .breadcrumb-sep {
  color: var(--neutral-mid);
  font-size: 14px;
}

/* 框景首屏 */
.page-faq .hero-frame {
  position: relative;
  margin-bottom: calc(var(--faq-grid-unit) * 6);
  border: 1px solid var(--border);
  border-radius: var(--faq-card-radius);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.page-faq .hero-frame-inner {
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
}

.page-faq .hero-text {
  padding: calc(var(--faq-grid-unit) * 4) calc(var(--faq-grid-unit) * 3) calc(var(--faq-grid-unit) * 2);
  background: var(--faq-hero-overlay);
}

.page-faq .hero-text h1 {
  font-family: 'Montserrat', var(--font-sans);
  font-weight: 700;
  font-size: 32px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--neutral-dark);
  margin: 0 0 var(--faq-grid-unit) 0;
}

.page-faq .hero-sub {
  font-size: 16px;
  color: var(--neutral-mid);
  margin: 0;
  letter-spacing: 0.04em;
  font-weight: 400;
}

.page-faq .hero-image {
  width: 100%;
  overflow: hidden;
  line-height: 0;
}

.page-faq .hero-image img {
  width: 100%;
  height: auto;
  max-height: 280px;
  object-fit: cover;
  display: block;
}

.page-faq .frame-marks {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 2;
}

.page-faq .frame-marks span {
  position: absolute;
  width: 16px;
  height: 16px;
  border-color: var(--primary-light);
  border-style: solid;
}

.page-faq .mark-tl { top: -1px; left: -1px; border-width: 2px 0 0 2px; border-radius: 4px 0 0 0; }
.page-faq .mark-tr { top: -1px; right: -1px; border-width: 2px 2px 0 0; border-radius: 0 4px 0 0; }
.page-faq .mark-bl { bottom: -1px; left: -1px; border-width: 0 0 2px 2px; border-radius: 0 0 0 4px; }
.page-faq .mark-br { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; border-radius: 0 0 4px 0; }

/* 快速搜索 */
.page-faq .quick-search {
  margin-bottom: calc(var(--faq-grid-unit) * 5);
}

.page-faq .search-box {
  display: flex;
  align-items: center;
  gap: var(--faq-grid-unit);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 48px;
  padding: calc(var(--faq-grid-unit) * 1.2) calc(var(--faq-grid-unit) * 2);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s, border-color 0.2s;
  max-width: 480px;
}

.page-faq .search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(76,175,80,0.15);
}

.page-faq .search-icon {
  flex-shrink: 0;
  color: var(--neutral-mid);
}

.page-faq .search-box input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 15px;
  font-family: inherit;
  color: var(--neutral-dark);
  background: transparent;
  min-width: 0;
}

.page-faq .search-box input::placeholder {
  color: var(--neutral-mid);
  opacity: 0.7;
}

/* 通用章节 */
.page-faq .section {
  margin-bottom: calc(var(--faq-grid-unit) * 8);
}

.page-faq .section-label {
  display: flex;
  align-items: baseline;
  gap: var(--faq-grid-unit);
  margin-bottom: calc(var(--faq-grid-unit) * 1.5);
}

.page-faq .label-marker {
  font-family: 'Montserrat', var(--font-sans);
  font-weight: 700;
  font-size: 14px;
  color: var(--primary);
  letter-spacing: 0.04em;
  background: rgba(76,175,80,0.1);
  padding: 2px 10px;
  border-radius: 4px;
  line-height: 1.6;
}

.page-faq .section-label h2 {
  font-family: 'Montserrat', var(--font-sans);
  font-weight: 700;
  font-size: 26px;
  line-height: 1.2;
  color: var(--neutral-dark);
  margin: 0;
}

.page-faq .section-desc {
  font-size: 15px;
  color: var(--neutral-mid);
  margin: 0 0 calc(var(--faq-grid-unit) * 3) 0;
  max-width: 640px;
  line-height: 1.6;
}

/* 规则清单 - 折叠面板 */
.page-faq .accordion-group {
  display: flex;
  flex-direction: column;
  gap: var(--faq-grid-unit);
}

.page-faq .accordion-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--faq-accordion-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s, border-color 0.25s;
}

.page-faq .accordion-item[open] {
  border-color: var(--primary-light);
  box-shadow: 0 2px 12px rgba(76,175,80,0.08);
}

.page-faq .accordion-item summary {
  display: flex;
  align-items: center;
  gap: var(--faq-grid-unit);
  padding: calc(var(--faq-grid-unit) * 2) calc(var(--faq-grid-unit) * 2.5);
  cursor: pointer;
  list-style: none;
  position: relative;
  user-select: none;
}

.page-faq .accordion-item summary::-webkit-details-marker {
  display: none;
}

.page-faq .accordion-item summary::before {
  content: '';
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--faq-accordion-border);
  border-bottom: 2px solid var(--faq-accordion-border);
  transform: rotate(-45deg);
  transition: transform 0.25s ease;
  margin-right: var(--faq-grid-unit);
  opacity: 0.6;
}

.page-faq .accordion-item[open] summary::before {
  transform: rotate(45deg);
  opacity: 1;
}

.page-faq .accordion-title {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  color: var(--neutral-dark);
  line-height: 1.4;
}

.page-faq .version-badge {
  flex-shrink: 0;
  display: inline-block;
  background: var(--faq-badge-bg);
  color: var(--faq-badge-text);
  font-size: 12px;
  font-weight: 600;
  font-family: 'Montserrat', var(--font-sans);
  padding: 2px 10px;
  border-radius: 12px;
  letter-spacing: 0.02em;
  line-height: 1.6;
}

.page-faq .accordion-body {
  padding: 0 calc(var(--faq-grid-unit) * 2.5) calc(var(--faq-grid-unit) * 2.5);
  border-top: 1px solid var(--border);
  margin-top: -1px;
}

.page-faq .accordion-body p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--neutral-mid);
  margin: calc(var(--faq-grid-unit) * 1.5) 0 0 0;
  max-width: 680px;
}

/* 查询记录 */
.page-faq .history-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--faq-grid-unit) * 3);
  align-items: start;
}

.page-faq .history-text p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--neutral-mid);
  margin: 0 0 calc(var(--faq-grid-unit) * 2) 0;
}

.page-faq .history-features {
  list-style: none;
  padding: 0;
  margin: 0 0 calc(var(--faq-grid-unit) * 2) 0;
  display: flex;
  flex-direction: column;
  gap: var(--faq-grid-unit);
}

.page-faq .history-features li {
  display: flex;
  align-items: center;
  gap: var(--faq-grid-unit);
  font-size: 15px;
  color: var(--neutral-dark);
  line-height: 1.5;
}

.page-faq .feat-icon {
  flex-shrink: 0;
  color: var(--primary);
}

.page-faq .history-extra {
  font-size: 14px;
  color: var(--neutral-mid);
  line-height: 1.6;
  padding: calc(var(--faq-grid-unit) * 2);
  background: rgba(76,175,80,0.04);
  border-left: 3px solid var(--primary-light);
  border-radius: 0 6px 6px 0;
}

.page-faq .history-image {
  width: 100%;
  border-radius: var(--faq-card-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  line-height: 0;
}

.page-faq .history-image img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

/* 客服服务 */
.page-faq .service-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--faq-grid-unit) * 2);
  margin-bottom: calc(var(--faq-grid-unit) * 3);
}

.page-faq .service-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--faq-card-radius);
  padding: calc(var(--faq-grid-unit) * 3);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s, transform 0.25s;
  position: relative;
}

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

.page-faq .card-accent {
  border-color: var(--secondary);
  background: linear-gradient(135deg, rgba(255,152,0,0.04) 0%, rgba(255,152,0,0.01) 100%);
}

.page-faq .card-icon {
  color: var(--primary);
  margin-bottom: calc(var(--faq-grid-unit) * 1.5);
}

.page-faq .card-accent .card-icon {
  color: var(--secondary);
}

.page-faq .service-card h3 {
  font-family: 'Montserrat', var(--font-sans);
  font-weight: 700;
  font-size: 18px;
  color: var(--neutral-dark);
  margin: 0 0 var(--faq-grid-unit) 0;
}

.page-faq .service-detail {
  font-size: 18px;
  font-weight: 600;
  color: var(--neutral-dark);
  margin: 0 0 4px 0;
  word-break: break-all;
}

.page-faq .service-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s;
}

.page-faq .service-link:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.page-faq .service-note {
  font-size: 14px;
  color: var(--neutral-mid);
  margin: 0;
  line-height: 1.5;
}

.page-faq .service-footnote {
  font-size: 14px;
  color: var(--neutral-mid);
  line-height: 1.6;
  padding: calc(var(--faq-grid-unit) * 2) calc(var(--faq-grid-unit) * 2.5);
  background: rgba(0,188,212,0.04);
  border-radius: 8px;
  border: 1px solid var(--border);
  margin: 0;
}

.page-faq .service-footnote a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.page-faq .service-footnote a:hover {
  text-decoration: underline;
}

/* ===== 桌面端 (≥768px) ===== */
@media (min-width: 768px) {
  .page-faq {
    padding: calc(var(--faq-grid-unit) * 3) calc(var(--faq-grid-unit) * 4) calc(var(--faq-grid-unit) * 8);
  }

  .page-faq .hero-frame-inner {
    flex-direction: row;
    align-items: stretch;
  }

  .page-faq .hero-text {
    flex: 1 1 45%;
    padding: calc(var(--faq-grid-unit) * 5) calc(var(--faq-grid-unit) * 4);
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .page-faq .hero-text h1 {
    font-size: 38px;
  }

  .page-faq .hero-sub {
    font-size: 18px;
  }

  .page-faq .hero-image {
    flex: 1 1 55%;
  }

  .page-faq .hero-image img {
    height: 100%;
    max-height: none;
    object-fit: cover;
  }

  .page-faq .search-box {
    max-width: 520px;
    padding: calc(var(--faq-grid-unit) * 1.5) calc(var(--faq-grid-unit) * 2.5);
  }

  .page-faq .section-label h2 {
    font-size: 30px;
  }

  .page-faq .accordion-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--faq-grid-unit) * 2);
  }

  .page-faq .accordion-item {
    break-inside: avoid;
  }

  .page-faq .accordion-item summary {
    padding: calc(var(--faq-grid-unit) * 2.5) calc(var(--faq-grid-unit) * 3);
  }

  .page-faq .accordion-body {
    padding: 0 calc(var(--faq-grid-unit) * 3) calc(var(--faq-grid-unit) * 3);
  }

  .page-faq .history-grid {
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--faq-grid-unit) * 5);
  }

  .page-faq .history-text {
    order: 1;
  }

  .page-faq .history-image {
    order: 2;
    position: relative;
    top: var(--faq-grid-unit);
  }

  .page-faq .service-cards {
    grid-template-columns: 1fr 1fr 1fr;
    gap: calc(var(--faq-grid-unit) * 2.5);
  }

  .page-faq .service-card {
    padding: calc(var(--faq-grid-unit) * 4) calc(var(--faq-grid-unit) * 3);
  }

  .page-faq .card-accent {
    transform: scale(1.02);
    z-index: 1;
  }

  .page-faq .card-accent:hover {
    transform: scale(1.04) translateY(-2px);
  }
}

/* ===== 大桌面端 (≥1024px) ===== */
@media (min-width: 1024px) {
  .page-faq .hero-text h1 {
    font-size: 42px;
  }

  .page-faq .hero-text {
    padding: calc(var(--faq-grid-unit) * 6) calc(var(--faq-grid-unit) * 5);
  }

  .page-faq .accordion-group {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .history-grid {
    gap: calc(var(--faq-grid-unit) * 6);
  }

  .page-faq .service-cards {
    gap: calc(var(--faq-grid-unit) * 3);
  }
}

/* ===== 减少动效 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-faq .accordion-item summary::before {
    transition: none;
  }

  .page-faq .service-card {
    transition: none;
  }

  .page-faq .service-card:hover {
    transform: none;
  }

  .page-faq .card-accent:hover {
    transform: none;
  }
}