.page-faq {
  --faq-toc-width: 280px;
  --faq-border: rgba(9, 30, 55, 0.14);
  --faq-border-soft: rgba(9, 30, 55, 0.08);
  --faq-answer-bg: rgba(204, 224, 255, 0.42);
  --faq-hero-radius: 1rem;
  background: var(--color-snow);
  color: var(--color-ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ===== 页头区域 ===== */
.page-faq .faq-hero {
  background:
    radial-gradient(circle at 88% 12%, rgba(255, 107, 53, 0.22), transparent 44%),
    linear-gradient(135deg, var(--color-space) 0%, var(--color-deep) 100%);
  color: var(--color-snow);
  padding: 2rem 0 2.5rem;
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 1.6rem;
  align-items: center;
}

.page-faq .faq-hero .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 1rem;
  font-size: 0.78rem;
  color: var(--color-mist);
}

.page-faq .faq-hero .breadcrumb a {
  color: var(--color-action);
  font-weight: 600;
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumb a:hover {
  color: var(--color-action-hover);
  text-decoration: underline;
}

.page-faq .faq-hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-action);
}

.page-faq .faq-hero-tag::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--color-action);
  border-radius: 2px;
  transform: rotate(45deg);
}

.page-faq .faq-hero h1 {
  margin: 0.6rem 0 0.9rem;
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 7vw, 4.2rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.01em;
  color: #ffffff;
}

.page-faq .faq-hero-lead {
  max-width: 54ch;
  margin: 0;
  color: var(--color-mist);
  font-size: 1.02rem;
  line-height: 1.7;
}

.page-faq .faq-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  max-width: 480px;
  margin-top: 1.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.page-faq .faq-hero-stats div {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.page-faq .faq-hero-stats .stat-num {
  font-family: var(--font-heading);
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-action);
}

.page-faq .faq-hero-stats small {
  font-size: 0.75rem;
  line-height: 1.3;
  color: var(--color-mist);
}

.page-faq .faq-hero-figure {
  margin: 0;
  border-radius: var(--faq-hero-radius);
  background: var(--color-mist);
  overflow: hidden;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.26);
}

.page-faq .faq-hero-figure img {
  display: block;
  width: 100%;
  height: 180px;
  object-fit: cover;
}

/* ===== 手册网格 ===== */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding-block: 2.5rem 4rem;
}

/* ===== 目录 ===== */
.page-faq .faq-toc {
  padding: 1.3rem;
  border: 1px solid var(--faq-border-soft);
  border-radius: 1rem;
  background: #ffffff;
  box-shadow: 0 12px 32px rgba(2, 12, 27, 0.04);
}

.page-faq .toc-title {
  margin: 0 0 0.8rem;
  font-family: var(--font-heading);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-silver);
}

.page-faq .faq-toc-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.page-faq .toc-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.6rem;
  border-radius: 2rem;
  background: var(--color-snow);
  color: var(--color-ink);
  font-size: 0.84rem;
  font-weight: 600;
  line-height: 1.3;
  text-decoration: none;
  transition: background 0.23s var(--ease), color 0.23s var(--ease);
}

.page-faq .toc-item .toc-item-num {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  min-width: 1.3rem;
  color: var(--color-action);
}

.page-faq .toc-item:hover {
  background: var(--color-mist);
  color: var(--color-pitch);
}

.page-faq .toc-item.is-active {
  background: var(--color-space);
  color: #ffffff;
}

.page-faq .toc-item.is-active .toc-item-num {
  color: var(--color-action);
}

.page-faq .faq-card-note {
  margin-top: 1.1rem;
  padding: 1rem;
  border-radius: 0.8rem;
  background: linear-gradient(135deg, rgba(204, 224, 255, 0.6), rgba(204, 224, 255, 0.25));
}

.page-faq .faq-card-note-title {
  margin: 0 0 0.25rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-space);
}

.page-faq .faq-card-note-text {
  margin: 0 0 0.9rem;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--color-ink);
}

.page-faq .faq-card-note .btn {
  width: 100%;
  display: inline-flex;
  justify-content: center;
}

/* ===== 折叠面板 ===== */
.page-faq .faq-panels {
  display: grid;
  gap: 3rem;
}

.page-faq .faq-section {
  scroll-margin-top: 1.6rem;
}

.page-faq .faq-section-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.4rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--faq-border-soft);
}

.page-faq .faq-section-num {
  min-width: 2.2rem;
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 700;
  line-height: 0.85;
  color: var(--color-action);
}

.page-faq .faq-section-header h2 {
  margin: 0.1rem 0 0.3rem;
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 3.4vw, 2.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--color-space);
}

.page-faq .faq-section-header p {
  max-width: 60ch;
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--color-ink);
  opacity: 0.72;
}

.page-faq .faq-list {
  display: grid;
  gap: 0.8rem;
}

.page-faq .faq-item {
  border: 1px solid var(--faq-border-soft);
  border-radius: 1rem;
  background: #ffffff;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-faq .faq-item:hover,
.page-faq .faq-item[open] {
  border-color: rgba(255, 107, 53, 0.3);
  box-shadow: 0 8px 26px rgba(2, 12, 27, 0.06);
}

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

.page-faq .faq-question {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
  color: var(--color-pitch);
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 650;
  line-height: 1.4;
  transition: color 0.22s var(--ease);
}

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

.page-faq .faq-question::marker {
  content: none;
}

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

.page-faq .faq-item[open] .faq-question {
  color: var(--color-space);
}

.page-faq .faq-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--color-mist);
  color: var(--color-ink);
  transition: background 0.25s var(--ease), color 0.25s var(--ease);
}

.page-faq .faq-qtext {
  flex: 1;
}

.page-faq .faq-toggle {
  display: inline-flex;
  flex: 0 0 auto;
  margin-left: auto;
  color: var(--color-silver);
  transition: transform 0.28s var(--ease), color 0.28s var(--ease);
}

.page-faq .faq-question:hover .faq-icon {
  background: var(--color-action);
  color: #ffffff;
}

.page-faq .faq-item[open] .faq-icon {
  background: var(--color-space);
  color: #ffffff;
}

.page-faq .faq-item[open] .faq-toggle {
  transform: rotate(180deg);
  color: var(--color-action);
}

.page-faq .faq-answer {
  margin: 0 0.9rem 0.9rem;
  padding: 0.8rem 1rem;
  border-left: 3px solid var(--color-action);
  border-radius: 0.6rem;
  background: var(--faq-answer-bg);
  color: var(--color-ink);
  font-size: 0.95rem;
  line-height: 1.75;
}

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

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

.page-faq .faq-item[open] .faq-answer {
  animation: faq-reveal 0.28s var(--ease);
}

@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.7rem;
  padding-top: 0.6rem;
  border-top: 1px dashed rgba(9, 30, 55, 0.18);
}

.page-faq .faq-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-action);
  text-decoration: none;
  transition: color 0.22s var(--ease);
}

.page-faq .faq-links a::after {
  content: "→";
  transition: transform 0.2s var(--ease);
}

.page-faq .faq-links a:hover {
  color: var(--color-action-hover);
}

.page-faq .faq-links a:hover::after {
  transform: translateX(3px);
}

/* ===== 流程插图 ===== */
.page-faq .faq-flow-figure {
  margin: 0 0 1.4rem;
  border: 1px solid var(--faq-border-soft);
  border-radius: 1rem;
  background: #ffffff;
  overflow: hidden;
}

.page-faq .faq-flow-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

.page-faq .faq-flow-figure figcaption {
  padding: 0.55rem 1rem;
  border-top: 1px solid var(--faq-border-soft);
  background: var(--color-snow);
  font-size: 0.78rem;
  color: var(--color-ink);
}

/* ===== 平板以上 ===== */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 2.5rem 0 3.2rem;
  }

  .page-faq .faq-hero-figure img {
    height: 220px;
  }

  .page-faq .faq-toc-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
  }

  .page-faq .toc-item {
    padding: 0.55rem 0.6rem;
    border-radius: 0.6rem;
    background: transparent;
    font-size: 0.88rem;
  }

  .page-faq .faq-answer {
    margin: 0 1.2rem 1.2rem 4.1rem;
    padding: 0.85rem 1.1rem;
  }

  .page-faq .faq-panels {
    gap: 5rem;
  }
}

/* ===== 桌面 ===== */
@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding: 3.5rem 0 4rem;
  }

  .page-faq .faq-hero-grid {
    grid-template-columns: 1.25fr 0.85fr;
    gap: 3.5rem;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-toc-width) minmax(0, 1fr);
    align-items: start;
    gap: clamp(2.5rem, 6vw, 5rem);
    padding-block: var(--space-xl) var(--space-xl);
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 1.6rem;
  }

  .page-faq .faq-section-header h2 {
    font-size: 2.2rem;
  }
}