/* ============================================
   页面：帮助中心 / .page-faq
   设计协议：指挥台 · 控制面板
   ============================================ */
.page-faq {
  --faq-scanline: rgba(0, 229, 255, 0.05);
  background: var(--bg);
}

.page-faq .faq-cards-section,
.page-faq .workbench-section,
.page-faq .status-section,
.page-faq .guide-section,
.page-faq .contact-section {
  padding: 56px 0 64px;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: 84px;
}

/* ---------- 01 控制台顶部 ---------- */
.page-faq .faq-console {
  position: relative;
  overflow: hidden;
  padding: 32px 0 44px;
  border-bottom: 1px solid var(--border);
  background:
    repeating-linear-gradient(90deg, var(--faq-scanline) 0 1px, transparent 1px 72px),
    linear-gradient(135deg, rgba(0, 229, 255, 0.06) 0%, transparent 46%),
    linear-gradient(180deg, #0C1534 0%, var(--bg) 100%);
}
.page-faq .faq-console::before {
  content: "v3850-588";
  position: absolute;
  right: 18px;
  bottom: 6px;
  font-family: var(--font-mono);
  font-size: 52px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: rgba(255, 107, 53, 0.06);
  line-height: 1;
  pointer-events: none;
  z-index: 1;
}
.page-faq .faq-console .breadcrumb {
  margin-bottom: 28px;
}
.page-faq .console-grid {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 28px;
}
.page-faq .console-copy h1 {
  margin: 0 0 12px;
  font-family: var(--font-headline);
  font-size: clamp(42px, 7vw, 72px);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}
.page-faq .console-lead {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
}
.page-faq .console-tools {
  display: grid;
  gap: 14px;
  align-content: end;
}

/* 搜索框 */
.page-faq .search-box {
  display: grid;
  gap: 8px;
}
.page-faq .search-label {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}
.page-faq .search-control {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  height: 52px;
  padding: 0 16px;
  background: rgba(8, 15, 35, 0.85);
  border: 1px solid var(--border-strong);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.page-faq .search-control:focus-within {
  border-color: var(--accent2);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.14);
}
.page-faq .search-icon {
  flex: none;
  width: 18px;
  height: 18px;
  color: var(--accent2);
}
.page-faq .search-control input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  outline: none;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
}
.page-faq .search-control input::placeholder {
  color: var(--text-muted);
}
.page-faq .search-hint {
  margin: 0;
  font-size: 12px;
  color: var(--text-muted);
}

/* 状态灯 */
.page-faq .status-lamp {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
  justify-self: start;
  padding: 10px 14px;
  border: 1px solid var(--border);
  background: var(--bg-card);
}
.page-faq .status-lamp-text {
  font-size: 14px;
  font-weight: 600;
}
.page-faq .status-lamp-ver {
  font-size: 12px;
  color: var(--text-muted);
  border-left: 1px solid var(--border);
  padding-left: 10px;
}

/* ---------- 章节通用辅助 ---------- */
.page-faq .section-intro {
  margin: 0 0 22px;
  max-width: 70ch;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
}
.page-faq .section-footer-link {
  margin: 28px 0 0;
  font-size: 14px;
  color: var(--text-muted);
}
.page-faq .section-footer-link a,
.page-faq .contact-footnote a {
  color: var(--accent2);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.35);
}
.page-faq .section-footer-link a:hover,
.page-faq .contact-footnote a:hover {
  border-bottom-color: var(--accent2);
}

/* ---------- 02 高频问题卡片 ---------- */
.page-faq .faq-cards-grid {
  display: grid;
  gap: 12px;
}
.page-faq .faq-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 200px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s, background-color 0.25s;
}
.page-faq .faq-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: var(--accent2);
  transform: scaleY(0);
  transform-origin: center bottom;
  transition: transform 0.28s ease;
}
.page-faq .faq-card:nth-child(2)::before {
  background: var(--accent);
}
.page-faq .faq-card:nth-child(3)::before {
  background: var(--warning);
}
.page-faq .faq-card:nth-child(4)::before {
  background: var(--success);
}
.page-faq .faq-card svg {
  width: 38px;
  height: 38px;
  color: var(--accent2);
}
.page-faq .faq-card:nth-child(2) svg {
  color: var(--accent);
}
.page-faq .faq-card h3 {
  margin: 4px 0 0;
  font-family: var(--font-headline);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.15;
}
.page-faq .faq-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}
.page-faq .faq-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid rgba(28, 43, 94, 0.6);
}
.page-faq .faq-arrow {
  font-size: 20px;
  color: var(--accent2);
  transition: transform 0.2s;
}
.page-faq .faq-card:hover,
.page-faq .faq-card:focus-visible {
  border-color: var(--border-strong);
  background: var(--bg-elevated);
  transform: translateY(-2px);
  outline: none;
}
.page-faq .faq-card:hover::before,
.page-faq .faq-card:focus-visible::before {
  transform: scaleY(1);
}
.page-faq .faq-card:hover .faq-arrow,
.page-faq .faq-card:focus-visible .faq-arrow {
  transform: translateX(4px);
}

/* ---------- 03 工作台分步解答 ---------- */
.page-faq .workbench-layout {
  display: grid;
  gap: 18px;
  align-items: start;
}
.page-faq .workbench-index {
  padding: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
}
.page-faq .index-caption {
  display: block;
  padding: 10px 10px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--text-muted);
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
}
.page-faq .index-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 10px;
  font-size: 14px;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid rgba(28, 43, 94, 0.5);
  transition: background-color 0.18s, color 0.18s;
}
.page-faq .index-link:last-child {
  border-bottom: 0;
}
.page-faq .index-link .mono {
  font-size: 13px;
  color: var(--accent);
}
.page-faq .index-link:hover,
.page-faq .index-link:focus-visible {
  background: var(--accent2-soft);
  color: var(--accent2);
  outline: none;
}

.page-faq .workbench-panels {
  display: grid;
  gap: 12px;
  min-width: 0;
}

/* 手风琴 */
.page-faq .faq-item {
  border: 1px solid var(--border);
  background: var(--bg-card);
}
.page-faq .faq-item[open] {
  border-color: var(--border-strong);
}
.page-faq .faq-item summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--accent2);
  transition: transform 0.2s;
}
.page-faq .faq-item[open] summary::after {
  content: "–";
}
.page-faq .faq-item summary:focus-visible,
.page-faq .status-history summary:focus-visible {
  outline: 2px solid var(--accent2);
  outline-offset: -2px;
}
.page-faq .item-no {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
}
.page-faq .item-title {
  font-family: var(--font-headline);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.15;
}
.page-faq .faq-item[open] summary .item-title {
  color: var(--accent2);
}
.page-faq .item-state {
  padding: 3px 8px;
  font-size: 11px;
  color: var(--text-muted);
  border: 1px solid var(--border);
  white-space: nowrap;
}
.page-faq .faq-item .item-body {
  padding: 0 20px 22px;
  border-top: 1px solid var(--border);
}
.page-faq .item-body > p:first-child {
  padding-top: 16px;
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
}
.page-faq .item-body ol {
  margin: 12px 0;
  padding-left: 20px;
  display: grid;
  gap: 8px;
}
.page-faq .item-body li {
  padding-left: 4px;
  font-size: 14px;
  line-height: 1.75;
}
.page-faq .item-body li::marker {
  color: var(--accent2);
  font-family: var(--font-mono);
  font-weight: 600;
}
.page-faq .item-tip {
  margin-top: 12px;
  padding: 10px 12px;
  border-left: 3px solid var(--warning);
  background: rgba(255, 209, 102, 0.06);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* 图文示意 */
.page-faq .fig-fixed-item {
  margin: 16px 0;
}
.page-faq .fig-fixed-item img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
}
.page-faq .fig-fixed-item figcaption {
  padding-top: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

/* ---------- 04 状态页 ---------- */
.page-faq .status-dashboard {
  margin-top: 22px;
  border: 1px solid var(--border);
  background:
    linear-gradient(120deg, rgba(0, 229, 255, 0.05) 0%, transparent 45%),
    var(--bg-card);
}
.page-faq .status-current {
  display: grid;
  gap: 20px;
  padding: 24px;
}
.page-faq .status-summary {
  min-width: 0;
}
.page-faq .status-label {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
}
.page-faq .status-name {
  margin: 12px 0 4px;
  font-family: var(--font-headline);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
}
.page-faq .status-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}
.page-faq .status-figure {
  margin: 0;
  min-width: 0;
}
.page-faq .status-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  background: var(--bg);
}

/* 状态历史 */
.page-faq .status-history {
  border-top: 1px solid var(--border);
}
.page-faq .status-history summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding: 16px 24px;
  cursor: pointer;
  list-style: none;
}
.page-faq .status-history summary::-webkit-details-marker {
  display: none;
}
.page-faq .history-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent2);
}
.page-faq .history-badge {
  padding: 2px 8px;
  font-size: 11px;
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
}
.page-faq .status-history summary::after {
  content: "˅";
  margin-left: auto;
  color: var(--text-muted);
  font-size: 16px;
  transition: transform 0.2s;
}
.page-faq .status-history[open] summary::after {
  transform: rotate(180deg);
}
.page-faq .status-history .timeline {
  margin: 0;
  padding: 8px 24px 20px;
}

/* ---------- 05 操作指南 ---------- */
.page-faq .guide-grid {
  display: grid;
  gap: 16px;
}
.page-faq .guide-card {
  position: relative;
  padding: 24px;
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent2);
  background: var(--bg-card);
}
.page-faq .guide-card:nth-child(2) {
  border-top-color: var(--accent);
}
.page-faq .guide-card:nth-child(3) {
  border-top-color: var(--success);
}
.page-faq .guide-number {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--accent2);
}
.page-faq .guide-card h3 {
  margin: 8px 0 6px;
  font-family: var(--font-headline);
  font-size: 22px;
}
.page-faq .guide-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}
.page-faq .guide-steps {
  margin: 12px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}
.page-faq .guide-steps li {
  font-size: 13px;
  line-height: 1.65;
}
.page-faq .guide-steps li::marker {
  color: var(--accent2);
  font-family: var(--font-mono);
}

/* ---------- 06 联系支持 ---------- */
.page-faq .contact-layout {
  margin-top: 22px;
  padding: 24px;
  border: 1px solid var(--border);
  background: var(--bg-card);
}
.page-faq .contact-cards {
  display: grid;
  gap: 12px;
}
.page-faq .contact-card {
  padding: 20px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
}
.page-faq .contact-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-headline);
  font-size: 16px;
  letter-spacing: 0.06em;
  color: var(--accent);
  text-transform: uppercase;
}
.page-faq .contact-value {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  overflow-wrap: break-word;
}
.page-faq .contact-card .mono {
  word-break: break-all;
  font-size: 15px;
}
.page-faq .contact-desc {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-muted);
}
.page-faq .contact-note {
  margin: 20px 0 0;
  padding: 12px 14px;
  border-left: 3px solid var(--accent2);
  background: rgba(0, 229, 255, 0.06);
  font-size: 13px;
  line-height: 1.7;
}
.page-faq .contact-security {
  margin: 14px 0 0;
  padding: 12px 14px;
  border-left: 3px solid var(--warning);
  background: rgba(255, 209, 102, 0.06);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-muted);
}
.page-faq .contact-footnote {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ---------- 响应式：中屏 ---------- */
@media (min-width: 480px) {
  .page-faq .workbench-index {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }
  .page-faq .index-caption {
    grid-column: 1 / -1;
  }
  .page-faq .index-link {
    border-bottom: 0;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-cards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 800px) {
  .page-faq .guide-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
  .page-faq .contact-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

/* ---------- 响应式：桌面 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-console {
    padding: 48px 0 64px;
  }
  .page-faq .console-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
    gap: 48px;
    align-items: end;
  }
  .page-faq .workbench-layout {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 24px;
  }
  .page-faq .workbench-index {
    position: sticky;
    top: 88px;
    z-index: 5;
    display: block;
  }
  .page-faq .index-link {
    border-bottom: 1px solid rgba(28, 43, 94, 0.5);
  }
  .page-faq .status-current {
    grid-template-columns: minmax(0, 1fr) minmax(0, 400px);
    gap: 32px;
    align-items: center;
    padding: 32px;
  }
}

/* ---------- 动画偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-card,
  .page-faq .faq-card::before,
  .page-faq .faq-arrow,
  .page-faq .search-control,
  .page-faq .faq-item summary::after,
  .page-faq .status-history summary::after,
  .page-faq .index-link {
    transition: none;
  }
}