.page-faq {
  --faq-rail-w: 240px;
  --faq-ease: var(--ease);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
}

.page-faq .faq-crumb-row {
  padding-top: clamp(18px, 3vw, 32px);
}

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
}

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

.page-faq .breadcrumb a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s var(--faq-ease), color .18s var(--faq-ease);
}

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

/* ===== 首屏 ===== */
.page-faq .faq-hero {
  padding-top: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 38px);
  align-items: start;
}

.page-faq .faq-hero-copy .tag {
  margin: 0 0 14px;
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-size: clamp(34px, 6.6vw, 60px);
  line-height: 1.06;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--ink);
}

.page-faq .faq-hero-lead {
  margin: 0 0 22px;
  max-width: 40ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-hero-side {
  display: grid;
  gap: 14px;
}

.page-faq .faq-hero-figure {
  margin: 0;
}

.page-faq .faq-hero-figure img {
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--r-md);
  display: block;
}

.page-faq .faq-version-panel {
  position: relative;
  overflow: hidden;
  padding: 18px 20px 20px;
  border-radius: var(--r-md);
  background: var(--ink);
  color: var(--paper-light);
}

.page-faq .faq-version-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(247, 241, 230, .09) 1px, transparent 1px),
                    linear-gradient(to bottom, rgba(247, 241, 230, .09) 1px, transparent 1px);
  background-size: 26px 26px;
  pointer-events: none;
}

.page-faq .faq-version-label {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: .18em;
  color: rgba(247, 241, 230, .72);
}

.page-faq .faq-version-num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(46px, 9vw, 76px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--cyan);
}

.page-faq .faq-version-meta {
  position: relative;
  margin: 0;
  max-width: 34ch;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(247, 241, 230, .82);
}

/* ===== 状态条 ===== */
.page-faq .faq-status {
  margin-top: clamp(26px, 4vw, 54px);
  padding: clamp(20px, 3vw, 30px) 0;
  background: var(--ink-soft);
  color: var(--paper-light);
}

.page-faq .faq-status-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-faq .faq-stat {
  padding-top: 14px;
  border-top: 1px solid var(--line-invert);
}

.page-faq .faq-stat-num {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: clamp(30px, 6vw, 44px);
  font-weight: 700;
  line-height: 1;
  color: var(--paper-light);
}

.page-faq .faq-stat-label {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--cyan);
}

.page-faq .faq-stat-note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(247, 241, 230, .72);
}

/* ===== 主体两栏 ===== */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  padding: clamp(28px, 4vw, 56px) 0 clamp(44px, 6vw, 84px);
}

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

.page-faq .faq-rail {
  border-radius: var(--r-md);
}

.page-faq .faq-rail-title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--muted);
}

.page-faq .faq-rail-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-rail-list::-webkit-scrollbar {
  display: none;
}

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

.page-faq .faq-rail-link {
  display: block;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--paper-light);
  color: var(--ink-soft);
  font-size: 13.5px;
  text-decoration: none;
  white-space: nowrap;
  transition: background .18s var(--faq-ease), color .18s var(--faq-ease), border-color .18s var(--faq-ease), transform .18s var(--faq-ease);
}

.page-faq .faq-rail-link:hover {
  border-color: var(--teal);
  color: var(--teal);
  transform: translateY(-2px);
}

.page-faq .faq-rail-link:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-faq .faq-rail-link[aria-current="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper-light);
}

.page-faq .faq-rail-note {
  margin: 12px 0 0;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-faq .faq-rail-note strong {
  font-family: var(--font-mono);
  color: var(--teal);
}

/* ===== 章节 ===== */
.page-faq .faq-stack {
  display: grid;
  gap: clamp(30px, 4.4vw, 58px);
  min-width: 0;
}

.page-faq .faq-block {
  min-width: 0;
  scroll-margin-top: 96px;
}

.page-faq .faq-block-head {
  margin-bottom: 16px;
}

.page-faq .faq-kicker {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--teal);
}

.page-faq .faq-kicker--on-dark {
  color: var(--cyan);
}

.page-faq .faq-block-title {
  margin: 0 0 10px;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.16;
  letter-spacing: -.01em;
  font-weight: 800;
  color: var(--ink);
}

.page-faq .faq-block-lead {
  margin: 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-faq .faq-prose p {
  max-width: 42ch;
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--ink-soft);
}

.page-faq .faq-inline-link {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-inline-link a,
.page-faq .faq-a a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(15, 107, 92, .4);
  transition: border-color .18s var(--faq-ease);
}

.page-faq .faq-inline-link a:hover,
.page-faq .faq-a a:hover {
  border-bottom-color: var(--teal);
}

/* 表格 */
.page-faq .table-wrap {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow-x: auto;
  background: var(--paper-light);
}

.page-faq .data-table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .data-table th,
.page-faq .data-table td {
  padding: 12px 14px;
  text-align: left;
  line-height: 1.55;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.page-faq .data-table thead th {
  background: var(--ink-soft);
  color: var(--paper-light);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: .04em;
  white-space: nowrap;
}

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

.page-faq .data-table tbody tr {
  transition: background .16s var(--faq-ease);
}

.page-faq .data-table tbody tr:hover {
  background: rgba(45, 212, 191, .12);
}

.page-faq .data-table td:first-child {
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}

/* 控球率 */
.page-faq .faq-possession-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.page-faq .faq-metric-groups {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-faq .faq-metric-group {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--teal);
  border-radius: var(--r-sm);
  background: var(--paper-light);
  transition: transform .2s var(--faq-ease), border-color .2s var(--faq-ease);
}

.page-faq .faq-metric-group:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  border-left-color: var(--orange);
}

.page-faq .faq-metric-group h3 {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-metric-group p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-figure {
  margin: 0;
}

.page-faq .faq-figure img {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  object-fit: cover;
  border-radius: var(--r-md);
}

.page-faq .faq-window {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: 18px 20px;
  border-radius: var(--r-md);
  background: var(--ink);
  color: var(--paper-light);
}

.page-faq .faq-window-lead {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(247, 241, 230, .86);
}

.page-faq .faq-window-figure svg {
  width: 100%;
  max-width: 420px;
  height: auto;
  display: block;
}

.page-faq .faq-svg-label {
  fill: rgba(247, 241, 230, .78);
  font-family: var(--font-sans);
  font-size: 11px;
}

.page-faq .faq-bar--cyan { fill: var(--cyan); }
.page-faq .faq-bar--teal { fill: #16907C; }
.page-faq .faq-bar--orange { fill: var(--orange); }

/* 轮次时间线 */
.page-faq .faq-timeline {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 16px 0;
  border-top: 1px dashed var(--line-strong);
}

.page-faq .faq-step:last-child {
  border-bottom: 1px dashed var(--line-strong);
}

.page-faq .faq-step-num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--teal);
}

.page-faq .faq-step-title {
  margin: 0 0 4px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-step-text {
  margin: 0;
  max-width: 44ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* 访问路径 */
.page-faq .faq-path {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 16px 0;
}

.page-faq .faq-path-card {
  padding: 16px 18px;
  border-radius: var(--r-md);
  background: var(--paper-light);
  border: 1px solid var(--line);
  transition: transform .2s var(--faq-ease), box-shadow .2s var(--faq-ease);
}

.page-faq .faq-path-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.page-faq .faq-path-index {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--teal);
}

.page-faq .faq-path-card h3 {
  margin: 0 0 6px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-path-card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* FAQ 折叠 */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
  margin-top: 8px;
}

.page-faq .faq-item {
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--paper-light);
  transition: border-color .18s var(--faq-ease), background .18s var(--faq-ease);
}

.page-faq .faq-item:hover {
  border-color: var(--line-strong);
}

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

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
}

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
  border-radius: var(--r-xs);
}

.page-faq .faq-item-icon {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-top: 1px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  color: var(--teal);
  transition: background .18s var(--faq-ease), color .18s var(--faq-ease), border-color .18s var(--faq-ease);
}

.page-faq .faq-item-icon::before {
  content: "+";
}

.page-faq .faq-item[open] .faq-item-icon {
  background: var(--teal);
  border-color: var(--teal);
  color: var(--paper-light);
}

.page-faq .faq-item[open] .faq-item-icon::before {
  content: "−";
}

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

.page-faq .faq-a p {
  margin: 0;
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.82;
  color: var(--ink-soft);
}

/* 帮助卡 */
.page-faq .faq-help-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  padding: clamp(20px, 3.4vw, 36px);
  border-radius: var(--r-lg);
  background: var(--ink);
  color: var(--paper-light);
}

.page-faq .faq-help-card .faq-block-title {
  color: var(--paper-light);
}

.page-faq .faq-help-lead {
  margin: 0 0 18px;
  max-width: 42ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(247, 241, 230, .84);
}

.page-faq .faq-help-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-faq .faq-help-list li {
  display: grid;
  gap: 3px;
  padding-top: 10px;
  border-top: 1px solid var(--line-invert);
}

.page-faq .faq-help-key {
  font-size: 11.5px;
  letter-spacing: .16em;
  color: rgba(247, 241, 230, .62);
}

.page-faq .faq-help-value {
  font-size: 14px;
  line-height: 1.7;
  color: var(--cyan);
  word-break: break-word;
}

.page-faq .faq-help-value a {
  color: var(--paper-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(247, 241, 230, .35);
}

.page-faq .faq-help-value a:hover,
.page-faq .faq-help-value a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ===== 断点 ===== */
@media (min-width: 660px) {
  .page-faq .faq-status-inner {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

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

  .page-faq .faq-path {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }

  .page-faq .faq-possession-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
    align-items: start;
  }

  .page-faq .faq-window {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
    align-items: center;
  }

  .page-faq .faq-help-card {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 28px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-rail-list {
    display: grid;
    gap: 6px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail-link {
    border-radius: var(--r-sm);
    background: transparent;
    border-color: transparent;
    font-size: 14px;
    padding: 10px 12px;
  }

  .page-faq .faq-rail-link[aria-current="true"] {
    background: var(--ink);
    border-color: var(--ink);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail-link,
  .page-faq .faq-metric-group,
  .page-faq .faq-path-card,
  .page-faq .faq-item-icon {
    transition: none;
  }

  .page-faq .faq-rail-link:hover,
  .page-faq .faq-metric-group:hover,
  .page-faq .faq-path-card:hover {
    transform: none;
  }
}
<<<END>>>