.page-faq {
  --faq-panel-glow: rgba(0, 230, 118, 0.06);
  --faq-purple-glow: rgba(156, 39, 176, 0.14);
  --faq-orange-glow: rgba(255, 109, 0, 0.1);
  background: var(--bg-deep);
  color: var(--text-primary);
  overflow-x: clip;
}

/* ===== hero ===== */
.page-faq .faq-hero {
  position: relative;
  padding: 36px 0 44px;
  overflow: hidden;
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -140px;
  right: -100px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--faq-purple-glow), transparent 68%);
  pointer-events: none;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: -60px;
  bottom: 20px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--faq-panel-glow), transparent 70%);
  pointer-events: none;
}
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
}
.page-faq .breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}
.page-faq .breadcrumb a:hover {
  color: var(--accent-green);
}
.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin-top: 24px;
}
.page-faq .faq-code {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--accent-green);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.page-faq .faq-code::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--accent-green);
  box-shadow: 0 0 12px var(--accent-green);
}
.page-faq .faq-hero h1 {
  margin: 14px 0 14px;
  font-size: clamp(34px, 7vw, 60px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.03em;
}
.page-faq .faq-hero-subtitle {
  margin: 0;
  max-width: 56ch;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.9;
}
.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.page-faq .faq-jump .btn {
  padding: 10px 18px;
  font-size: 14px;
}

/* ===== FAQ 区块 ===== */
.page-faq .faq-section {
  padding: 52px 0 68px;
}
.page-faq .faq-section-head {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
}
.page-faq .faq-section-head .section-subtitle {
  margin: 0;
  max-width: 46ch;
}
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}

/* 问题索引 */
.page-faq .faq-index {
  background: linear-gradient(145deg, var(--bg-panel), rgba(17, 34, 64, 0.7));
  border: 1px solid var(--border-color);
  border-top: 3px solid var(--accent-green);
  border-radius: var(--radius-lg);
  padding: 22px 18px;
}
.page-faq .faq-index-caption {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--accent-green);
  text-transform: uppercase;
}
.page-faq .faq-index nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.page-faq .faq-index-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 12px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  border: 1px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.page-faq .faq-index-item:hover {
  background: var(--faq-panel-glow);
  border-color: rgba(0, 230, 118, 0.22);
  color: var(--text-primary);
}
.page-faq .faq-index-num {
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-green);
  min-width: 24px;
}
.page-faq .faq-topic-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

/* 手风琴 */
.page-faq .faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.page-faq .faq-item {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.page-faq .faq-item[open] {
  border-color: rgba(0, 230, 118, 0.35);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
}
.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 18px;
  cursor: pointer;
  list-style: none;
  border-radius: var(--radius-md);
  transition: background var(--transition);
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary:hover {
  background: var(--faq-panel-glow);
}
.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--accent-green);
  outline-offset: -2px;
}
.page-faq .faq-item-num {
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-green);
  background: var(--accent-green-soft);
  padding: 5px 10px;
  border-radius: var(--radius-pill);
  flex-shrink: 0;
}
.page-faq .faq-item-q {
  flex: 1;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
}
.page-faq .faq-item-indicator {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--border-light);
  position: relative;
  flex-shrink: 0;
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
}
.page-faq .faq-item-indicator::before,
.page-faq .faq-item-indicator::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 2px;
  background: var(--accent-green);
  transform: translate(-50%, -50%);
}
.page-faq .faq-item-indicator::after {
  transform: translate(-50%, -50%) rotate(90deg);
}
.page-faq .faq-item[open] .faq-item-indicator {
  transform: rotate(45deg);
  background: var(--accent-green-soft);
  border-color: rgba(0, 230, 118, 0.4);
}
.page-faq .faq-item-a {
  padding: 0 18px 20px;
}
.page-faq .faq-item-a p {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--border-color);
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
}
.page-faq .faq-more {
  margin: 18px 0 0;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background: var(--accent-purple-soft);
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.8;
}
.page-faq .faq-more a {
  color: var(--accent-green);
  text-decoration: none;
  font-weight: 700;
}
.page-faq .faq-more a:hover {
  text-decoration: underline;
}

/* ===== 使用手册 ===== */
.page-faq .faq-manual {
  position: relative;
  padding: 60px 0;
  background: linear-gradient(180deg, transparent, rgba(17, 34, 64, 0.55) 20%, rgba(17, 34, 64, 0.55) 80%, transparent);
}
.page-faq .faq-manual::before {
  content: "";
  position: absolute;
  top: 0;
  left: 15%;
  right: 15%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-green), transparent);
}
.page-faq .manual-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px 48px;
  margin-top: 36px;
  align-items: center;
}
.page-faq .manual-steps {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.page-faq .manual-step {
  display: flex;
  gap: 16px;
  padding: 22px;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), border-color var(--transition);
}
.page-faq .manual-step:hover {
  transform: translateX(4px);
  border-color: var(--border-light);
}
.page-faq .manual-step-num {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-green);
  background: var(--accent-green-soft);
  border-radius: var(--radius-pill);
}
.page-faq .manual-step h3 {
  margin: 4px 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
}
.page-faq .manual-step p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.75;
}

/* 图片容器 */
.page-faq .faq-figure {
  margin: 0;
  padding: 12px;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: calc(var(--radius-md) - 4px);
  object-fit: cover;
}
.page-faq .faq-figure figcaption {
  padding: 12px 8px 4px;
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.6;
}

/* ===== 反馈指引 ===== */
.page-faq .faq-contact {
  padding: 60px 0 76px;
}
.page-faq .contact-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}
.page-faq .contact-info .section-subtitle {
  margin: 0 0 20px;
  max-width: 44ch;
}
.page-faq .contact-data {
  background: linear-gradient(145deg, var(--bg-panel), rgba(17, 34, 64, 0.75));
  border-radius: var(--radius-lg);
  border-top: 3px solid var(--accent-orange);
  padding: 8px 24px 22px;
  margin: 0 0 18px;
}
.page-faq .contact-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-color);
  margin: 0;
}
.page-faq .contact-label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 700;
  margin: 0;
}
.page-faq .contact-value {
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
  margin: 0;
}
.page-faq .contact-value.mono {
  font-family: var(--font-mono);
  font-size: 15px;
}
.page-faq .contact-note {
  margin: 16px 0 18px;
  padding: 14px 16px;
  background: var(--accent-green-soft);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.8;
}
.page-faq .contact-info .btn-primary {
  margin-top: 4px;
}

/* ===== 响应式 ===== */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 52px 0 64px;
  }
  .page-faq .faq-section-head {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
  .page-faq .faq-item-a {
    padding: 0 24px 24px 62px;
  }
  .page-faq .contact-row {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
  .page-faq .manual-grid {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: 320px 1fr;
    gap: 48px;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 96px;
  }
  .page-faq .manual-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }
  .page-faq .contact-layout {
    grid-template-columns: 1fr 0.9fr;
    gap: 56px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-layout {
    grid-template-columns: 340px 1fr;
    gap: 64px;
  }
}