/* ============================================
   PAGE: SUPPORT / FAQ
   作用域：.page-faq
   ============================================ */

/* ---- Hero 背景 ---- */
.page-faq .faq-hero {
  position: relative;
  padding: 3.5rem 0 3rem;
  background:
    radial-gradient(90% 140% at 85% 0%, rgba(var(--primary-rgb), 0.1), transparent 60%),
    radial-gradient(80% 120% at 5% 100%, rgba(var(--secondary-rgb), 0.06), transparent 55%),
    linear-gradient(rgba(var(--primary-rgb), 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(var(--secondary-rgb), 0.03) 1px, transparent 1px),
    var(--bg-tertiary);
  background-size: auto, auto, 48px 48px, 48px 48px, auto;
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: -8%;
  width: 45%;
  height: 100%;
  background: repeating-linear-gradient(
    -55deg,
    transparent 0 2rem,
    rgba(var(--primary-rgb), 0.05) 2rem calc(2rem + 1px)
  );
  transform: skewX(-18deg);
  pointer-events: none;
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

/* ---- Hero 文本 ---- */
.page-faq .breadcrumb {
  margin: 0 0 1.2rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.page-faq .faq-hero h1 {
  font-family: Impact, 'Arial Black', sans-serif;
  font-weight: 400;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.15;
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--text-primary);
}

.page-faq .faq-intro {
  color: var(--text-muted);
  font-size: 1.08rem;
  line-height: 1.8;
  margin: 1rem 0 1.6rem;
  max-width: 44rem;
}

.page-faq .faq-searchbox {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  max-width: 42rem;
  padding: 0.9rem 1.4rem;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: rgba(var(--bg-primary-rgb), 0.65);
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
}

.page-faq .faq-searchbox svg {
  flex: 0 0 auto;
  color: var(--color-secondary);
}

/* ---- Hero 图片 ---- */
.page-faq .faq-hero-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--border-color);
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-secondary);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
  transform: rotate(0.8deg);
}

.page-faq .faq-hero-figure::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  z-index: 1;
}

.page-faq .faq-hero-figure .tag {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 2;
}

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

/* ---- 主体布局 ---- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding: 3rem 0 4rem;
  align-items: start;
}

.page-faq .faq-main {
  min-width: 0;
}

/* ---- 分类索引 ---- */
.page-faq .faq-index {
  min-width: 0;
}

.page-faq .faq-index-label {
  font-family: 'Courier New', monospace;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.9rem;
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0 0 0.5rem;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-index-link {
  display: block;
  white-space: nowrap;
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  transition: border-color 0.2s, color 0.2s, background-color 0.2s;
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  border-color: rgba(var(--primary-rgb), 0.6);
  color: var(--text-primary);
  background: rgba(var(--primary-rgb), 0.08);
}

.page-faq .faq-index-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--color-secondary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.page-faq .faq-index-cta:hover,
.page-faq .faq-index-cta:focus-visible {
  border-bottom-color: var(--color-secondary);
}

/* ---- 折叠分区 ---- */
.page-faq .faq-section {
  margin-bottom: 3.5rem;
  scroll-margin-top: 2rem;
}

.page-faq .faq-section-head {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 0.7rem;
}

.page-faq .faq-section-tag {
  font-family: 'Courier New', monospace;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.55rem;
  border-radius: 4px;
  background: var(--color-primary);
  color: var(--bg-primary);
}

.page-faq .faq-section h2 {
  font-family: Impact, 'Arial Black', sans-serif;
  font-weight: 400;
  font-size: clamp(1.45rem, 3vw, 1.95rem);
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--text-primary);
}

.page-faq .faq-section-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border-color), transparent);
}

.page-faq .faq-section-desc {
  margin: 0.2rem 0 1.2rem;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
  max-width: 46rem;
}

.page-faq .faq-section:target {
  animation: page-faq-flash 1.1s ease;
}

@keyframes page-faq-flash {
  0% {
    box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.4);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(var(--primary-rgb), 0);
  }
}

/* ---- 折叠面板 ---- */
.page-faq .faq-accordion {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
}

.page-faq .faq-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-item[open] {
  border-color: rgba(var(--primary-rgb), 0.45);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.22);
}

@media (hover: hover) {
  .page-faq .faq-item:hover {
    border-color: rgba(var(--secondary-rgb), 0.5);
    transform: translateY(-2px);
  }
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  list-style: none;
  cursor: pointer;
  padding: 1.2rem 1.3rem;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-primary);
}

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: -2px;
  border-radius: 10px;
}

.page-faq .faq-item summary::after {
  content: "+";
  font-family: 'Courier New', monospace;
  font-size: 1.3rem;
  line-height: 1;
  color: var(--color-primary);
  transition: transform 0.2s ease, color 0.2s ease;
  flex: 0 0 auto;
  margin-top: 0.15rem;
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--color-secondary);
}

.page-faq .faq-answer {
  margin: 0;
  padding: 1rem 1.3rem 1.35rem;
  border-top: 1px dashed var(--border-color);
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.85;
}

/* ---- 数据更新图解 ---- */
.page-faq .faq-update-figure {
  margin: 0 0 1.4rem;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-secondary);
}

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

/* ---- 联系支持 ---- */
.page-faq .faq-contact-section {
  padding: 2rem 1.5rem;
  border: 1px solid var(--border-color);
  border-radius: 16px;
  background:
    radial-gradient(90% 100% at 90% 0%, rgba(var(--primary-rgb), 0.08), transparent 55%),
    var(--bg-tertiary);
}

.page-faq .faq-contact-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}

.page-faq .faq-support-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--color-secondary);
  border-radius: 10px;
  padding: 1.1rem 1.25rem;
}

.page-faq .faq-support-label {
  display: block;
  font-family: 'Courier New', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: 0.45rem;
}

.page-faq .faq-support-value {
  display: block;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.98rem;
  word-break: break-all;
  line-height: 1.5;
}

.page-faq .faq-trust {
  margin: 0 0 1.5rem;
  padding: 0.9rem 1rem;
  border-left: 3px solid var(--color-accent);
  background: rgba(var(--accent-rgb), 0.07);
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-faq .faq-contact-action {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

/* ---- 平板断点 ---- */
@media (min-width: 640px) {
  .page-faq .faq-contact-cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---- 桌面断点 ---- */
@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3.5rem;
  }

  .page-faq .faq-layout {
    grid-template-columns: 240px 1fr;
    gap: 3rem;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 1.5rem;
    padding: 1.5rem 1.4rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 14px;
  }

  .page-faq .faq-index-list {
    display: block;
    padding: 0;
    overflow: visible;
  }

  .page-faq .faq-index-link {
    white-space: normal;
    border-radius: 8px;
    border: none;
    border-left: 2px solid transparent;
    background: transparent;
    padding: 0.65rem 0.9rem;
    margin-bottom: 0.25rem;
  }
}

/* ---- 宽屏桌面：折叠面板双列 ---- */
@media (min-width: 1024px) {
  .page-faq .faq-accordion {
    grid-template-columns: repeat(2, 1fr);
    align-items: start;
    gap: 1rem;
  }
}