.page-faq {
  --faq-sidebar-w: 250px;
  --faq-gap: 2rem;
  --faq-border: rgba(192, 192, 192, 0.2);
  --faq-accent-bg: rgba(255, 107, 53, 0.1);
  --faq-hover-bg: rgba(255, 255, 255, 0.04);
  padding: var(--spacing-lg, 2rem) var(--spacing-md, 1rem);
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  color: var(--color-text, #e0e0e0);
  font-family: var(--font-body, 'Noto Sans SC', 'PingFang SC', sans-serif);
}
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  color: var(--color-silver, #c0c0c0);
  margin-bottom: 1.4rem;
  font-family: var(--font-mono, 'Fira Code', monospace);
}
.page-faq .breadcrumb a {
  color: var(--color-accent, #ff6b35);
  text-decoration: none;
  transition: color 0.2s;
}
.page-faq .breadcrumb a:hover, .page-faq .breadcrumb a:focus-visible {
  color: var(--color-accent-hover, #ff8f5e);
  outline: none;
  text-decoration: underline;
}
.page-faq .breadcrumb span[aria-current="page"] {
  color: var(--color-heading, #ffffff);
  font-weight: 600;
}
.page-faq .page-title {
  font-family: var(--font-heading, 'Helvetica Neue', Arial, sans-serif);
  font-weight: 800;
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  color: var(--color-heading, #ffffff);
  margin: 0 0 0.3rem 0;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.page-faq .page-desc {
  font-size: 1.02rem;
  color: var(--color-silver, #c0c0c0);
  margin: 0 0 1.8rem 0;
  max-width: 600px;
  line-height: 1.5;
}
.page-faq .search-area {
  margin-bottom: 2.2rem;
}
.page-faq .search-box {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--faq-border);
  border-radius: 8px;
  padding: 0.55rem 1rem;
  max-width: 500px;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.page-faq .search-box:focus-within {
  border-color: var(--color-accent, #ff6b35);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.18);
}
.page-faq .search-icon {
  font-size: 1.2rem;
  margin-right: 0.55rem;
  opacity: 0.65;
  flex-shrink: 0;
  color: var(--color-silver, #c0c0c0);
}
.page-faq .search-input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--color-heading, #ffffff);
  font-size: 0.95rem;
  width: 100%;
  font-family: var(--font-body, 'Noto Sans SC', 'PingFang SC', sans-serif);
}
.page-faq .search-input::placeholder {
  color: rgba(255, 255, 255, 0.35);
}
.page-faq .faq-layout {
  display: flex;
  gap: var(--faq-gap);
  margin-bottom: 2.8rem;
}
.page-faq .faq-sidebar {
  flex: 0 0 var(--faq-sidebar-w);
  min-width: 0;
}
.page-faq .sidebar-title {
  font-family: var(--font-heading, 'Helvetica Neue', Arial, sans-serif);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-heading, #ffffff);
  margin: 0 0 0.8rem 0;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--faq-border);
}
.page-faq .category-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.page-faq .category-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  color: var(--color-text, #e0e0e0);
  font-size: 0.93rem;
  padding: 0.65rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.25s, color 0.25s;
  font-family: var(--font-body, 'Noto Sans SC', 'PingFang SC', sans-serif);
  position: relative;
}
.page-faq .category-btn::before {
  content: '';
  width: 3px;
  height: 0;
  background: var(--color-accent, #ff6b35);
  border-radius: 2px;
  position: absolute;
  left: -6px;
  top: 50%;
  transform: translateY(-50%);
  transition: height 0.3s;
}
.page-faq .category-btn:hover, .page-faq .category-btn:focus-visible {
  background: var(--faq-hover-bg);
  color: var(--color-heading, #ffffff);
}
.page-faq .category-btn:focus-visible {
  outline: 2px solid var(--color-accent, #ff6b35);
  outline-offset: 1px;
}
.page-faq .category-btn.active {
  background: var(--faq-accent-bg);
  color: var(--color-accent, #ff6b35);
  font-weight: 600;
}
.page-faq .category-btn.active::before {
  height: 60%;
}
.page-faq .category-btn::after {
  margin-left: auto;
  font-size: 0.85rem;
  opacity: 0.7;
}
.page-faq .category-btn[data-category="plat"]::after { content: "📱"; }
.page-faq .category-btn[data-category="data"]::after { content: "🔄"; }
.page-faq .category-btn[data-category="remind"]::after { content: "🔔"; }
.page-faq .category-btn[data-category="device"]::after { content: "📲"; }
.page-faq .category-btn[data-category="contact"]::after { content: "✉️"; }
.page-faq .faq-content {
  flex: 1;
  min-width: 0;
}
.page-faq .faq-panel {
  display: block;
}
.page-faq .faq-panel[hidden] {
  display: none;
}
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-border);
  margin-bottom: 0.15rem;
}
.page-faq .faq-item:last-of-type {
  border-bottom: none;
}
.page-faq .faq-question {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  color: var(--color-heading, #ffffff);
  font-size: 1rem;
  font-weight: 500;
  padding: 0.9rem 0.5rem;
  cursor: pointer;
  transition: color 0.25s, background 0.25s;
  font-family: var(--font-body, 'Noto Sans SC', 'PingFang SC', sans-serif);
  line-height: 1.4;
  border-radius: 4px;
}
.page-faq .faq-question:hover, .page-faq .faq-question:focus-visible {
  color: var(--color-accent, #ff6b35);
  background: var(--faq-hover-bg);
}
.page-faq .faq-question:focus-visible {
  outline: 2px solid var(--color-accent, #ff6b35);
  outline-offset: 1px;
}
.page-faq .faq-q-marker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  background: var(--color-accent, #ff6b35);
  color: #0a1628;
  font-weight: 800;
  font-size: 0.75rem;
  border-radius: 50%;
  flex-shrink: 0;
  font-family: var(--font-mono, 'Fira Code', monospace);
}
.page-faq .faq-question[aria-expanded="true"] .faq-q-marker {
  background: var(--color-accent-hover, #ff8f5e);
}
.page-faq .faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.4s ease, opacity 0.3s ease;
  opacity: 0;
  overflow: hidden;
}
.page-faq .faq-question[aria-expanded="true"] + .faq-answer {
  grid-template-rows: 1fr;
  opacity: 1;
}
.page-faq .faq-answer-inner {
  overflow: hidden;
  padding: 0 0.5rem 0.9rem 0.5rem;
  color: var(--color-text, #e0e0e0);
  font-size: 0.9rem;
  line-height: 1.7;
}
.page-faq .faq-answer-inner p {
  margin: 0 0 0.4rem 0;
}
.page-faq .faq-answer-inner ul,
.page-faq .faq-answer-inner ol {
  margin: 0.25rem 0 0.4rem 0;
  padding-left: 1.3rem;
}
.page-faq .faq-answer-inner li {
  margin-bottom: 0.2rem;
}
.page-faq .faq-answer-inner a {
  color: var(--color-accent, #ff6b35);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s;
}
.page-faq .faq-answer-inner a:hover {
  color: var(--color-accent-hover, #ff8f5e);
}
.page-faq .faq-img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  margin-top: 0.7rem;
  border: 1px solid var(--faq-border);
  object-fit: cover;
  display: block;
}
.page-faq .hot-questions {
  padding: 1.8rem 0;
  border-top: 1px solid var(--faq-border);
  margin-top: 0.5rem;
}
.page-faq .hot-questions .section-title {
  font-family: var(--font-heading, 'Helvetica Neue', Arial, sans-serif);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-heading, #ffffff);
  margin: 0 0 1.1rem 0;
  position: relative;
  padding-left: 0.9rem;
}
.page-faq .hot-questions .section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.1em;
  width: 4px;
  height: 1em;
  background: var(--color-accent, #ff6b35);
  border-radius: 2px;
}
.page-faq .hot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.9rem;
}
.page-faq .hot-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  background: var(--color-card-dark, rgba(0,0,0,0.4));
  border: 1px solid var(--faq-border);
  border-radius: 8px;
  padding: 0.9rem 1.1rem;
  text-decoration: none;
  color: var(--color-text, #e0e0e0);
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.page-faq .hot-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-accent, #ff6b35);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.15);
}
.page-faq .hot-card:focus-visible {
  outline: 2px solid var(--color-accent, #ff6b35);
  outline-offset: 2px;
}
.page-faq .hot-tag {
  display: inline-block;
  font-family: var(--font-mono, 'Fira Code', monospace);
  font-size: 0.7rem;
  color: var(--color-accent, #ff6b35);
  background: rgba(255, 107, 53, 0.12);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  align-self: flex-start;
  letter-spacing: 0.02em;
}
.page-faq .hot-text {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-heading, #ffffff);
  line-height: 1.4;
}
.page-faq .faq-item[data-reveal],
.page-faq .hot-questions[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.page-faq .faq-item[data-reveal].revealed,
.page-faq .hot-questions[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[data-reveal],
  .page-faq .hot-questions[data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .page-faq .faq-answer {
    transition: none !important;
  }
  .page-faq .hot-card:hover {
    transform: none !important;
  }
}
.page-faq .faq-layout {
  flex-direction: column;
}
.page-faq .faq-sidebar {
  flex: none;
  width: 100%;
}
.page-faq .category-list {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 0.25rem;
}
.page-faq .category-btn {
  width: auto;
  padding: 0.45rem 0.8rem;
  font-size: 0.83rem;
  white-space: nowrap;
}
.page-faq .category-btn::before {
  display: none;
}
.page-faq .category-btn.active {
  background: var(--faq-accent-bg);
  border: 1px solid rgba(255, 107, 53, 0.25);
}
.page-faq .sidebar-title {
  font-size: 0.98rem;
}
.page-faq .hot-grid {
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .page-faq .hot-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 900px) {
  .page-faq .faq-layout {
    flex-direction: row;
  }
  .page-faq .faq-sidebar {
    flex: 0 0 var(--faq-sidebar-w);
    width: var(--faq-sidebar-w);
    position: sticky;
    top: 2rem;
    align-self: flex-start;
  }
  .page-faq .category-list {
    flex-direction: column;
  }
  .page-faq .category-btn {
    width: 100%;
    padding: 0.65rem 1rem;
    font-size: 0.93rem;
    white-space: normal;
  }
  .page-faq .category-btn::before {
    display: block;
  }
  .page-faq .sidebar-title {
    font-size: 1.05rem;
  }
  .page-faq .hot-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  }
}
@media (min-width: 1200px) {
  .page-faq {
    padding: var(--spacing-xl, 4rem) var(--spacing-md, 1rem);
  }
}
.page-faq .faq-answer {
  grid-template-rows: 1fr !important;
  opacity: 1 !important;
}
.page-faq .faq-question[aria-expanded="false"] + .faq-answer {
  grid-template-rows: 0fr !important;
  opacity: 0 !important;
}
.page-faq .faq-question[aria-expanded="true"] + .faq-answer {
  grid-template-rows: 1fr !important;
  opacity: 1 !important;
}
.page-faq a {
  color: var(--color-accent, #ff6b35);
  transition: color 0.2s;
}
.page-faq a:hover {
  color: var(--color-accent-hover, #ff8f5e);
}
@media (max-width: 400px) {
  .page-faq .page-title {
    font-size: 1.4rem;
  }
  .page-faq .page-desc {
    font-size: 0.87rem;
  }
  .page-faq .faq-question {
    font-size: 0.88rem;
    padding: 0.7rem 0.3rem;
  }
  .page-faq .faq-q-marker {
    width: 22px;
    height: 22px;
    font-size: 0.65rem;
  }
  .page-faq .category-btn {
    font-size: 0.78rem;
    padding: 0.35rem 0.65rem;
  }
}