/* ============================================
   页面专属：page-faq
   常见问题 — 控制台状态面板布局
   移动端优先，桌面端双栏控制台
   ============================================ */

.page-faq {
  --faq-glow: rgba(0, 255, 156, 0.08);
  --faq-glow-strong: rgba(0, 255, 156, 0.16);
  --faq-grid-line: rgba(58, 95, 143, 0.3);
  --faq-border-soft: rgba(58, 95, 143, 0.55);
  --faq-warn-soft: rgba(255, 106, 0, 0.14);
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-deep) 100%);
  color: var(--color-text);
  overflow-x: clip;
}

/* ===== 容器 ===== */
.page-faq__container {
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ===== 面包屑 ===== */
.page-faq__crumbs {
  padding: var(--space-md) 0 0;
  font-family: var(--font-data);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}
.page-faq .breadcrumbs__link {
  color: var(--color-border);
  text-decoration: none;
  transition: color 0.2s ease;
}
.page-faq .breadcrumbs__link:hover {
  color: var(--color-accent);
}
.page-faq .breadcrumbs__link[aria-current="page"] {
  color: var(--color-accent);
  font-weight: 700;
}
.page-faq .breadcrumbs__sep {
  margin: 0 0.5rem;
  color: var(--color-border);
}

/* ===== Hero 区块 ===== */
.page-faq__hero {
  padding: var(--space-xl) 0;
}

.page-faq__hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.page-faq__eyebrow {
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 var(--space-sm);
}

.page-faq__title {
  font-family: var(--font-head);
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-md);
  color: var(--color-text);
}

.page-faq__lead {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text);
  opacity: 0.85;
  margin: 0 0 var(--space-lg);
  max-width: 34em;
}

/* 统计条 */
.page-faq__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}

.page-faq__stat {
  background: var(--color-bg-card);
  border-left: 3px solid var(--color-accent);
  padding: var(--space-sm) var(--space-md);
  position: relative;
}
.page-faq__stat::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 10px;
  height: 10px;
  background: var(--color-accent);
  opacity: 0.3;
  clip-path: polygon(0 0, 100% 0, 100% 100%);
}

.page-faq__stat-num {
  font-family: var(--font-data);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
  display: block;
  line-height: 1.2;
}
.page-faq__stat-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--color-text);
  opacity: 0.7;
}

/* Hero 媒体 */
.page-faq__hero-media {
  position: relative;
}

.page-faq__media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
}
.page-faq__media-frame::before {
  content: attr(data-media-label);
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 2;
  font-family: var(--font-data);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  padding: 3px 10px;
  background: var(--color-warn);
  color: var(--color-text);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 50%, calc(100% - 8px) 100%, 0 100%);
}

.page-faq__media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq__hero-media::before {
  content: "";
  position: absolute;
  top: 14px;
  left: 14px;
  right: -14px;
  bottom: -14px;
  z-index: 0;
  border: 1px solid var(--color-accent);
  opacity: 0.25;
  pointer-events: none;
}

.page-faq__hero-img {
  position: relative;
  z-index: 1;
  aspect-ratio: 2 / 1;
}

/* ===== 通用区块 ===== */
.page-faq__section {
  position: relative;
  padding: var(--space-xl) 0;
}

.page-faq__section > .page-faq__container {
  position: relative;
  z-index: 1;
}

.page-faq__section[data-index]::before {
  content: attr(data-index);
  position: absolute;
  top: 10px;
  right: var(--space-md);
  z-index: 0;
  font-family: var(--font-data);
  font-size: 5.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-border);
  opacity: 0.18;
  pointer-events: none;
}

.page-faq__section-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-md);
}

.page-faq__section-title {
  font-family: var(--font-head);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--color-text);
}

.page-faq__section-desc {
  font-family: var(--font-body);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--color-text);
  opacity: 0.7;
  margin: 0;
  max-width: 38em;
}

/* ===== 热门问题 ===== */
.page-faq__hot {
  background: var(--color-bg-deep);
}

.page-faq__hot-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.page-faq__hot-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: var(--space-lg) var(--space-md);
  min-height: 100%;
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.page-faq__hot-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 8px 32px var(--faq-glow);
}

.page-faq__hot-index {
  font-family: var(--font-data);
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-border);
  opacity: 0.55;
  margin-bottom: var(--space-md);
}

.page-faq__hot-card-title {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 var(--space-sm);
  color: var(--color-accent);
}

.page-faq__hot-text {
  font-family: var(--font-body);
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--color-text);
  opacity: 0.85;
  margin: 0 0 var(--space-lg);
  flex-grow: 1;
}

.page-faq__hot-btn {
  align-self: flex-start;
}

/* ===== 控制台整体 ===== */
.page-faq__console {
  background-color: rgba(6, 15, 31, 0.55);
  background-image:
    linear-gradient(var(--faq-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--faq-grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
}

.page-faq__console-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

/* ===== 侧边栏 ===== */
.page-faq__sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.page-faq__sidebar-panel {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: var(--space-lg) var(--space-md);
}
.page-faq__sidebar-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 14px;
  height: 4px;
  background: var(--color-accent);
}

.page-faq__panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-sm);
  margin-bottom: var(--space-md);
}

.page-faq__panel-title {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
}

.page-faq__panel-code {
  font-family: var(--font-data);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  color: var(--color-border);
}

.page-faq__cat-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq__cat-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.7rem var(--space-sm);
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-faq__cat-link:hover {
  color: var(--color-accent);
  background: var(--faq-glow);
}

.page-faq__cat-link.is-active {
  background: var(--faq-glow-strong);
  border-left-color: var(--color-accent);
  color: var(--color-accent);
}

.page-faq__cat-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-border);
  flex: 0 0 6px;
}
.page-faq__cat-link.is-active .page-faq__cat-dot {
  background: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent);
}

.page-faq__sidebar-status {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.page-faq__status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: faq-pulse 2s ease-in-out infinite;
}

.page-faq__status-text {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--color-text);
  opacity: 0.8;
  letter-spacing: 0.03em;
}

@keyframes faq-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.page-faq__sidebar-media {
  display: none;
}

/* ===== 问答列表 ===== */
.page-faq__qa-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.page-faq__cat-group {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: var(--space-lg) var(--space-md);
  scroll-margin-top: 6rem;
}

.page-faq__cat-head {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-sm);
}

.page-faq__cat-code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--color-accent);
  color: var(--color-bg);
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 0.95rem;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
}

.page-faq__cat-title {
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0;
  color: var(--color-text);
  flex-grow: 1;
}

.page-faq__cat-count {
  font-family: var(--font-data);
  font-size: 0.75rem;
}

/* ===== 手风琴 ===== */
.page-faq__qa {
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  margin-bottom: var(--space-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-faq__qa:last-child {
  margin-bottom: 0;
}

.page-faq__qa summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--color-text);
  transition: background 0.2s ease;
  user-select: none;
}

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

.page-faq__qa summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-data);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--color-accent);
  line-height: 1;
  transition: transform 0.25s ease;
}

.page-faq__qa[open] summary {
  background: var(--faq-glow);
}

.page-faq__qa[open] summary::after {
  content: "−";
  transform: rotate(180deg);
}

.page-faq__qa[open] {
  border-color: var(--color-accent);
  box-shadow: 0 0 24px var(--faq-glow);
}

.page-faq__qa-a {
  padding: 0 var(--space-md) var(--space-md);
  font-family: var(--font-body);
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--color-text);
  opacity: 0.88;
  border-top: 1px dashed var(--color-border);
  margin-top: 0;
}
.page-faq__qa[open] .page-faq__qa-a {
  padding-top: var(--space-md);
}
.page-faq__qa-a p {
  margin: 0;
}

/* ===== 联系客服 ===== */
.page-faq__contact {
  background: var(--color-bg-deep);
}

.page-faq__contact-panel {
  position: relative;
  background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-bg-deep) 100%);
  border: 1px solid var(--color-border);
  padding: var(--space-xl) var(--space-md);
}
.page-faq__contact-panel::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 48px;
  height: 4px;
  background: var(--color-warn);
}

.page-faq__contact-head {
  margin-bottom: var(--space-lg);
}

.page-faq__contact-desc {
  font-family: var(--font-body);
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--color-text);
  opacity: 0.8;
  margin: var(--space-sm) 0 0;
  max-width: 34em;
}

.page-faq__contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.page-faq__contact-card {
  display: block;
  text-decoration: none;
  background: rgba(26, 43, 74, 0.6);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  padding: var(--space-lg) var(--space-md);
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.page-faq__contact-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 8px 32px var(--faq-glow);
  transform: translateY(-2px);
}

.page-faq__contact-label {
  display: block;
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.page-faq__contact-value {
  display: block;
  font-family: var(--font-data);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  word-break: break-all;
}

.page-faq__contact-note {
  display: block;
  font-family: var(--font-body);
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--color-text);
  opacity: 0.65;
}

.page-faq__contact-addr {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--color-text);
  opacity: 0.75;
  margin: var(--space-lg) 0 0;
  padding-top: var(--space-md);
  border-top: 1px dashed var(--color-border);
}

/* ============================================
   媒体查询
   ============================================ */

/* 平板及以上：热门问题三列 */
@media (min-width: 768px) {
  .page-faq__hot-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq__section-title {
    font-size: 1.75rem;
  }

  .page-faq__stats {
    gap: var(--space-md);
  }

  .page-faq__contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* 桌面：Hero 双栏 + 控制台侧栏 */
@media (min-width: 1024px) {
  .page-faq__container {
    padding: 0 var(--space-lg);
  }

  .page-faq__hero {
    padding: var(--space-xl) 0 var(--space-xl);
  }

  .page-faq__hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
  }

  .page-faq__hero-copy {
    padding-right: var(--space-lg);
  }

  .page-faq__section {
    padding: var(--space-xl) 0;
  }

  .page-faq__section[data-index]::before {
    font-size: 7rem;
    top: 24px;
    right: var(--space-lg);
  }

  .page-faq__section-head {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }

  .page-faq__section-desc {
    text-align: right;
  }

  .page-faq__console-layout {
    grid-template-columns: 280px 1fr;
    gap: var(--space-xl);
    align-items: start;
  }

  .page-faq__sidebar {
    position: sticky;
    top: calc(var(--header-total) + 1rem);
    align-self: start;
  }

  .page-faq__sidebar-media {
    display: block;
  }

  .page-faq__cat-group {
    padding: var(--space-lg);
  }

  .page-faq__qa summary {
    font-size: 1rem;
    padding: var(--space-md) var(--space-lg);
  }

  .page-faq__qa-a {
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
  }

  .page-faq__contact-panel {
    padding: var(--space-xl);
  }
}