/* ===== 使用指南 · 页面专属样式 ===== */
.page-faq {
  --faq-gap: clamp(22px, 3.2vw, 36px);
  --faq-pad: clamp(20px, 3vw, 34px);
  --faq-rail-w: 236px;
}

/* ---------- 顶部引入区 ---------- */
.page-faq .faq-intro {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 3.4vw, 44px) 0 clamp(24px, 3.6vw, 44px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-intro::before {
  content: "";
  position: absolute;
  top: -55%;
  right: -18%;
  width: min(620px, 92vw);
  height: min(620px, 92vw);
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 32%, rgba(212, 175, 55, 0.20), transparent 60%),
    radial-gradient(circle at 68% 62%, rgba(255, 107, 74, 0.15), transparent 58%);
  pointer-events: none;
}

.page-faq .faq-intro > * {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumbs {
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

.page-faq .faq-kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .faq-title {
  margin: 0;
  max-width: 17em;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6vw, 58px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-title .hl {
  color: var(--gold);
}

.page-faq .faq-lede {
  margin: clamp(14px, 2vw, 20px) 0 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: rgba(230, 238, 248, 0.84);
}

.page-faq .faq-intro-facts {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-intro-facts li {
  padding: 2px 0 2px 14px;
  border-left: 2px solid var(--line-gold);
  font-size: 14px;
  line-height: 1.65;
  color: rgba(230, 238, 248, 0.78);
}

.page-faq .faq-intro-facts .fact-label {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

/* ---------- 主体骨架：左侧目录 + 右侧内容 ---------- */
.page-faq .faq-shell {
  padding-top: clamp(26px, 4vw, 48px);
  padding-bottom: clamp(44px, 6vw, 82px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

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

.page-faq .faq-rail-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--steel);
}

.page-faq .anchor-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.page-faq .anchor-nav a {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-left: 2px solid transparent;
  border-radius: 10px;
  background: rgba(140, 163, 184, 0.06);
  color: var(--steel);
  font-size: 13.5px;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.page-faq .anchor-nav a .nav-idx {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--gold);
}

.page-faq .anchor-nav a:hover {
  color: var(--mist);
  background: rgba(140, 163, 184, 0.14);
}

.page-faq .anchor-nav a:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}

.page-faq .anchor-nav a[aria-current="true"] {
  color: var(--white);
  background: rgba(140, 163, 184, 0.16);
  border-color: var(--line);
  border-left-color: var(--coral);
}

.page-faq .anchor-nav a[aria-current="true"] .nav-idx {
  color: var(--coral);
}

.page-faq .faq-flow {
  display: grid;
  gap: var(--faq-gap);
  min-width: 0;
}

/* ---------- 内容区块 ---------- */
.page-faq .faq-block {
  padding: var(--faq-pad);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(168deg, rgba(27, 42, 68, 0.62), rgba(10, 30, 60, 0.32));
  box-shadow: var(--shadow-card);
  scroll-margin-top: 96px;
}

.page-faq .faq-block-head {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-block-num {
  flex: none;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-gold);
  border-radius: 12px;
  background: rgba(212, 175, 55, 0.08);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--gold);
}

.page-faq .faq-block-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.6vw, 27px);
  line-height: 1.2;
  color: var(--white);
}

.page-faq .faq-block-sub {
  margin: 7px 0 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--steel);
}

.page-faq .faq-block-body {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(230, 238, 248, 0.82);
}

.page-faq .faq-block-body > p {
  margin: 0 0 18px;
}

.page-faq .faq-block-body > p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-block-body strong {
  color: var(--white);
  font-weight: 600;
}

.page-faq .text-link {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(212, 175, 55, 0.45);
}

.page-faq .text-link:hover {
  color: var(--gold-warm);
}

/* ---------- 步骤列表 ---------- */
.page-faq .step-list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .step-list li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.page-faq .step-idx {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid rgba(255, 107, 74, 0.38);
  border-radius: 8px;
  background: rgba(255, 107, 74, 0.12);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--coral);
}

.page-faq .step-name {
  margin: 3px 0 4px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--white);
}

.page-faq .step-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(230, 238, 248, 0.78);
}

/* ---------- 视图切换 ---------- */
.page-faq .tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  margin: 0 0 22px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(140, 163, 184, 0.08);
}

.page-faq .tab {
  padding: 9px 12px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--steel);
  font-family: var(--font-body);
  font-size: 13.5px;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease;
}

.page-faq .tab:hover {
  color: var(--mist);
}

.page-faq .tab[aria-selected="true"] {
  background: var(--gold);
  color: var(--ink-deep);
  font-weight: 600;
}

.page-faq .tab:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}

.page-faq .tab-panel {
  grid-column: 1 / -1;
  padding: 14px 16px;
  border-left: 2px solid var(--line-gold);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(6, 20, 40, 0.42);
  font-size: 14px;
  line-height: 1.78;
  color: rgba(230, 238, 248, 0.8);
}

.page-faq .tab-panel[hidden] {
  display: none;
}

/* ---------- 问答手风琴 ---------- */
.page-faq .faq-qa {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-qa-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--steel);
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(140, 163, 184, 0.07);
  overflow: hidden;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--mist);
}

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

.page-faq .faq-item summary:hover {
  color: var(--white);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: -2px;
}

.page-faq .faq-mark {
  position: relative;
  flex: none;
  margin-left: auto;
  width: 18px;
  height: 18px;
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--gold);
  border-radius: 2px;
}

.page-faq .faq-mark::before {
  width: 14px;
  height: 2px;
}

.page-faq .faq-mark::after {
  width: 2px;
  height: 14px;
  transition: transform 0.22s ease;
}

.page-faq .faq-item[open] {
  border-color: var(--line-strong);
  background: rgba(140, 163, 184, 0.13);
}

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

.page-faq .faq-item[open] .faq-mark::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .faq-a {
  padding: 0 16px 16px;
}

.page-faq .faq-a p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(230, 238, 248, 0.78);
}

/* ---------- 反馈渠道 ---------- */
.page-faq .channel-list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .channel-list li {
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(140, 163, 184, 0.07);
  font-size: 14px;
  line-height: 1.75;
  color: rgba(230, 238, 248, 0.8);
}

.page-faq .channel-name {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-faq .channel-value {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--white);
  word-break: break-all;
}

.page-faq .channel-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

/* ---------- 图片 ---------- */
.page-faq .figure {
  margin: 22px 0 0;
}

.page-faq .figure-frame {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(6, 20, 40, 0.6);
}

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

.page-faq .figure-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  color: rgba(140, 163, 184, 0.86);
}

/* ---------- 更新频率表 ---------- */
.page-faq .table-scroll {
  margin: 0 0 14px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(6, 20, 40, 0.42);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: 13.5px;
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 13px 15px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-table thead th {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--gold);
  background: rgba(212, 175, 55, 0.07);
  white-space: nowrap;
}

.page-faq .faq-table tbody td {
  color: rgba(230, 238, 248, 0.8);
}

.page-faq .faq-table tbody tr:nth-child(even) {
  background: rgba(140, 163, 184, 0.05);
}

.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-table .cell-key {
  color: var(--white);
  font-weight: 600;
}

.page-faq .faq-table .cell-mono {
  font-family: var(--font-mono);
  color: var(--gold-warm);
  white-space: nowrap;
}

.page-faq .faq-note {
  margin: 0 0 22px;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(140, 163, 184, 0.92);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-intro-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-faq .channel-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 92px;
  }

  .page-faq .anchor-nav {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .anchor-nav a {
    white-space: normal;
    border-radius: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition: none !important;
    animation: none !important;
  }
}