.page-faq {
  --faq-gap: 28px;
  --faq-line: 1px solid var(--grid);
  --faq-edge: 2px solid var(--ink-3);
  display: block;
  padding-bottom: 88px;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--ink-3);
}

.page-faq .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-faq .breadcrumb span[aria-current="page"] {
  color: var(--gold-2);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin-top: 20px;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(42, 74, 64, 0.55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 74, 64, 0.55) 1px, transparent 1px);
  background-size: 58px 58px;
  opacity: 0.55;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -160px;
  right: -120px;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(242, 193, 78, 0.18) 0%, rgba(242, 193, 78, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 34px;
}

.page-faq .faq-hero-copy {
  min-width: 0;
}

.page-faq .faq-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  padding: 6px 13px;
  border: 1px solid var(--ink-3);
  background: rgba(11, 31, 26, 0.66);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold-2);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-size: clamp(42px, 10vw, 86px);
  font-weight: 900;
  line-height: 0.96;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-lede {
  margin: 0 0 26px;
  max-width: 58ch;
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--paper);
  opacity: 0.86;
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.page-faq .faq-stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(94px, 1fr));
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ink-3);
  border-bottom: 1px solid var(--ink-3);
}

.page-faq .faq-stat-row li {
  min-width: 0;
  padding: 14px 12px 14px 0;
  border-right: 1px solid var(--ink-3);
}

.page-faq .faq-stat-row li:last-child {
  border-right: 0;
  padding-right: 0;
}

.page-faq .faq-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--gold);
}

.page-faq .faq-stat-label {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  line-height: 1.45;
  color: var(--muted);
}

.page-faq .faq-hero-media {
  position: relative;
  margin: 0;
  border: var(--faq-edge);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.page-faq .faq-hero-media::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(242, 193, 78, 0.2) 0%, rgba(242, 193, 78, 0) 46%);
  pointer-events: none;
  z-index: 1;
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  margin-top: 68px;
}

.page-faq .faq-body-grid {
  display: grid;
  gap: 26px;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-rail {
  min-width: 0;
  border: var(--faq-edge);
  background: var(--ink-2);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-rail-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 0;
  padding: 12px 14px;
  border-bottom: var(--faq-line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold-2);
}

.page-faq .faq-rail-meta {
  color: var(--muted);
}

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

.page-faq .faq-rail-list a {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: baseline;
  gap: 8px;
  padding: 13px 14px;
  border-bottom: var(--faq-line);
  font-size: 15px;
  line-height: 1.4;
  color: var(--paper);
  text-decoration: none;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.page-faq .faq-rail-list li:last-child a {
  border-bottom: 0;
}

.page-faq .faq-rail-list a:hover,
.page-faq .faq-rail-list a:focus-visible {
  background: var(--ink-3);
  color: var(--gold-2);
}

.page-faq .faq-rail-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
}

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

/* ---------- 右侧答案面板 ---------- */
.page-faq .faq-panels {
  display: grid;
  gap: 26px;
  min-width: 0;
}

.page-faq .faq-panel {
  position: relative;
  min-width: 0;
  padding: 26px 20px 28px;
  background: var(--ink-2);
  border: var(--faq-edge);
  box-shadow: var(--shadow-sm);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-panel::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  width: 78px;
  height: 4px;
  background: var(--gold);
}

.page-faq .faq-panel-head {
  display: grid;
  gap: 12px;
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: var(--faq-line);
}

.page-faq .faq-panel h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(22px, 5.4vw, 32px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-panel-lede {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* 步骤 */
.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: var(--faq-line);
}

.page-faq .faq-step:first-child {
  border-top: 0;
  padding-top: 2px;
}

.page-faq .faq-step-num {
  display: grid;
  place-items: center;
  height: 30px;
  background: var(--gold);
  border: 1px solid var(--gold-2);
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink);
}

.page-faq .faq-step-body {
  min-width: 0;
}

.page-faq .faq-step h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

/* 路径示意图 */
.page-faq .faq-route-figure {
  margin: 24px 0 0;
  border: var(--faq-edge);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

/* 提示条 */
.page-faq .faq-note {
  margin: 20px 0 0;
  padding: 14px 16px;
  border-left: 4px solid var(--gold);
  background: rgba(242, 193, 78, 0.09);
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--paper);
}

.page-faq .faq-note a {
  color: var(--gold-2);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 版本标签 */
.page-faq .faq-ver-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-ver {
  padding: 6px 12px;
  border: 1px solid var(--grid);
  background: rgba(11, 31, 26, 0.55);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-faq .faq-ver--now {
  border-color: var(--red);
  background: rgba(230, 57, 70, 0.16);
  color: var(--paper);
}

/* 手风琴 */
.page-faq .faq-acc {
  display: grid;
  gap: 10px;
}

.page-faq .faq-acc details {
  border: 1px solid var(--ink-3);
  background: rgba(11, 31, 26, 0.55);
}

.page-faq .faq-acc summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
  transition: color 0.18s ease, background-color 0.18s ease;
}

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

.page-faq .faq-acc summary::before {
  content: "?";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--red);
}

.page-faq .faq-acc summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.1;
  color: var(--gold);
}

.page-faq .faq-acc details[open] summary::after {
  content: "–";
}

.page-faq .faq-acc summary:hover {
  background: rgba(28, 74, 61, 0.5);
}

.page-faq .faq-acc details[open] summary {
  border-bottom: 1px solid var(--ink-3);
  color: var(--gold-2);
}

.page-faq .faq-ans {
  margin: 0;
  padding: 14px 16px 18px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-ans a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-ans a:hover {
  color: var(--gold-2);
}

/* 规则主题标签 */
.page-faq .faq-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-topics li {
  padding: 8px 14px;
  border: 1px solid var(--ink-3);
  background: rgba(11, 31, 26, 0.55);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--gold-2);
}

/* 联系卡片 */
.page-faq .faq-contact-grid {
  display: grid;
  gap: 12px;
}

.page-faq .faq-contact-card {
  min-width: 0;
  padding: 16px 18px;
  border: 1px solid var(--ink-3);
  background: rgba(11, 31, 26, 0.55);
}

.page-faq .faq-contact-key {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-contact-val {
  margin: 0;
  font-size: 16px;
  line-height: 1.55;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-contact-val a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
  transition: color 0.18s ease;
}

.page-faq .faq-contact-val a:hover,
.page-faq .faq-contact-val a:focus-visible {
  color: var(--gold-2);
}

.page-faq .faq-contact-desc {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    margin-top: 26px;
  }

  .page-faq .faq-panel {
    padding: 34px 32px 36px;
  }

  .page-faq .faq-hero-grid {
    gap: 40px;
  }

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

  .page-faq .faq-contact-card--wide {
    grid-column: 1 / -1;
  }

  .page-faq .faq-step {
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 18px;
  }
}

/* ---------- 桌面：索引与答案左右分栏 ---------- */
@media (min-width: 1000px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: 52px;
    padding-top: 26px;
    padding-bottom: 12px;
  }

  .page-faq .faq-hero h1 {
    font-size: clamp(56px, 6vw, 88px);
  }

  .page-faq .faq-body-grid {
    grid-template-columns: minmax(0, 3.6fr) minmax(0, 8.4fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }

  .page-faq .faq-rail-list a {
    padding: 14px 16px;
  }
}

/* ---------- 窄屏：索引改为横向滚动命令条 ---------- */
@media (max-width: 999px) {
  .page-faq .faq-rail-list {
    display: flex;
    overflow-x: auto;
    scrollbar-width: thin;
  }

  .page-faq .faq-rail-list li {
    flex: 0 0 auto;
  }

  .page-faq .faq-rail-list a {
    grid-template-columns: auto auto;
    align-items: center;
    gap: 8px;
    border-bottom: 0;
    border-right: var(--faq-line);
    white-space: nowrap;
  }

  .page-faq .faq-rail-list li:last-child a {
    border-right: 0;
  }
}

/* ---------- 小屏微调 ---------- */
@media (max-width: 520px) {
  .page-faq {
    padding-bottom: 64px;
  }

  .page-faq .faq-body {
    margin-top: 52px;
  }

  .page-faq .faq-hero h1 {
    font-size: clamp(38px, 12vw, 52px);
  }

  .page-faq .faq-lede {
    font-size: 15.5px;
  }

  .page-faq .faq-acc summary {
    font-size: 15px;
    padding: 14px 14px;
  }

  .page-faq .faq-ans {
    padding: 12px 14px 16px;
  }
}