.page-faq {
  --faq-rail-w: 196px;
  --faq-lead-size: clamp(16px, 1.35vw, 19px);
  --faq-pad-block: clamp(28px, 4vw, 64px);
  --faq-q-size: clamp(22px, 2.4vw, 34px);
  background: var(--ink);
  color: var(--silver);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding-block: 16px 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: var(--faq-pad-block);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 56px);
  align-items: start;
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-size: clamp(34px, 6.4vw, 78px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--paper);
  max-width: 15em;
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  font-size: var(--faq-lead-size);
  line-height: 1.78;
  color: var(--silver);
  max-width: 42em;
}

.page-faq .faq-hero__meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 30px 0 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__cell {
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-hero__cell dt {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  font-family: var(--font-mono);
}

.page-faq .faq-hero__cell dd {
  margin: 0;
  font-size: 14px;
  color: var(--paper);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  position: relative;
  clip-path: polygon(0 0, 100% 0, 100% 90%, 88% 100%, 0 100%);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.9) contrast(1.05);
}

.page-faq .faq-hero__cap {
  position: absolute;
  bottom: 12px;
  right: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  background: rgba(11, 31, 26, .72);
  padding: 4px 8px;
  border: 1px solid var(--line);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 72px);
  padding-block: var(--faq-pad-block) clamp(48px, 6vw, 96px);
}

/* ---------- 侧边索引 ---------- */
.page-faq .faq-rail {
  border-left: 1px solid var(--line);
  padding-left: 16px;
}

.page-faq .faq-rail__kicker {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  font-family: var(--font-mono);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: faqidx;
}

.page-faq .faq-rail__list li {
  counter-increment: faqidx;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-rail__list li:first-child {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-rail__list a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 11px 4px 11px 0;
  color: var(--silver);
  text-decoration: none;
  font-size: 14px;
  transition: color var(--t-fast), padding-left var(--t-fast);
}

.page-faq .faq-rail__list a::before {
  content: counter(faqidx, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--line);
  letter-spacing: 0.06em;
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--cyan);
  padding-left: 6px;
}

.page-faq .faq-rail__list a[aria-current="true"] {
  color: var(--cyan);
  border-left: 2px solid var(--cyan);
  margin-left: -17px;
  padding-left: 15px;
}

.page-faq .faq-rail__note {
  margin: 18px 0 0;
  font-size: 11px;
  line-height: 1.6;
  color: var(--line);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* ---------- 问题流 ---------- */
.page-faq .faq-stream {
  display: flex;
  flex-direction: column;
  gap: clamp(56px, 7vw, 108px);
  min-width: 0;
}

.page-faq .faq-item {
  position: relative;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  max-width: 760px;
}

.page-faq .faq-item__num {
  position: absolute;
  top: -11px;
  left: 0;
  background: var(--ink);
  padding-right: 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .faq-item__q {
  margin: 0 0 18px;
  font-size: var(--faq-q-size);
  line-height: 1.25;
  letter-spacing: -0.015em;
  font-weight: 900;
  color: var(--paper);
  max-width: 20em;
}

.page-faq .faq-item__a {
  margin: 0 0 14px;
  font-size: var(--faq-lead-size);
  line-height: 1.78;
  color: var(--paper);
  max-width: 38em;
}

.page-faq .faq-item__a b {
  color: var(--cyan);
  font-weight: 700;
}

.page-faq .faq-item__bound {
  margin: 0 0 20px;
  padding-left: 16px;
  border-left: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
  max-width: 38em;
}

.page-faq .faq-item a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color var(--t-fast), border-color var(--t-fast);
}

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

/* 折叠补充 */
.page-faq .faq-more {
  margin-top: 16px;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 0;
}

.page-faq .faq-more summary {
  cursor: pointer;
  list-style: none;
  padding: 13px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.page-faq .faq-more summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--orange);
  width: 12px;
  display: inline-block;
}

.page-faq .faq-more[open] summary::before {
  content: "−";
}

.page-faq .faq-more summary:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: -1px;
}

.page-faq .faq-more ul {
  margin: 0;
  padding: 0 18px 18px 30px;
  list-style: none;
}

.page-faq .faq-more li {
  position: relative;
  font-size: 14px;
  line-height: 1.72;
  color: var(--silver);
  padding-block: 6px;
}

.page-faq .faq-more li::before {
  content: "—";
  position: absolute;
  left: -14px;
  color: var(--line);
}

/* ---------- 射门字段列表 ---------- */
.page-faq .faq-fields {
  list-style: none;
  margin: 26px 0 34px;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-fields__row {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 4px 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-fields__code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  padding-top: 3px;
}

.page-faq .faq-fields__name {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-fields__desc {
  margin: 8px 0 0;
  grid-column: 2;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

/* ---------- 球场示意图 ---------- */
.page-faq .faq-diagram {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 18px 16px 14px;
}

.page-faq .faq-diagram__cap {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 12px;
}

.page-faq .faq-diagram__svg {
  display: block;
  width: 100%;
  height: auto;
  color: var(--line);
}

.page-faq .faq-diagram__frame {
  color: var(--line);
}

.page-faq .faq-diagram__offside {
  stroke: var(--orange);
  stroke-width: 1;
  stroke-dasharray: 6 5;
  opacity: .8;
}

.page-faq .faq-diagram__hit {
  fill: transparent;
  transition: fill var(--t-base);
}

.page-faq .faq-diagram__zone:hover .faq-diagram__hit,
.page-faq .faq-diagram__zone:focus-within .faq-diagram__hit {
  fill: rgba(92, 242, 200, .08);
}

.page-faq .faq-diagram__zone:focus {
  outline: none;
}

.page-faq .faq-diagram__zone:focus-visible .faq-diagram__hit {
  stroke: var(--cyan);
  stroke-width: 1;
}

.page-faq .faq-diagram__lab {
  fill: var(--silver);
  font-size: 13px;
  font-family: var(--font-sans);
  text-anchor: middle;
  transition: fill var(--t-fast);
}

.page-faq .faq-diagram__zone:hover .faq-diagram__lab,
.page-faq .faq-diagram__zone:focus-within .faq-diagram__lab {
  fill: var(--cyan);
}

.page-faq .faq-diagram__sub {
  fill: var(--line);
  font-size: 11px;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  text-anchor: middle;
}

.page-faq .faq-diagram__note {
  margin: 12px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--line);
  font-family: var(--font-mono);
}

/* ---------- 浅色反相口径对照 ---------- */
.page-faq .faq-compare {
  margin: 26px 0 22px;
  background: var(--paper);
  color: var(--paper-ink);
  border: 1px solid var(--line);
  padding: clamp(18px, 2.6vw, 32px);
}

.page-faq .faq-compare__cap {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan-deep);
}

.page-faq .faq-compare__scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-compare__table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.65;
}

.page-faq .faq-compare__table thead th {
  text-align: left;
  padding: 10px 12px;
  font-size: 12px;
  letter-spacing: 0.08em;
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--paper);
  background: var(--cyan-deep);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-compare__table tbody th {
  text-align: left;
  font-weight: 700;
  color: var(--paper-ink);
  width: 22%;
}

.page-faq .faq-compare__table td {
  color: var(--paper-ink);
}

.page-faq .faq-compare__table th,
.page-faq .faq-compare__table td {
  padding: 12px;
  vertical-align: top;
  border-bottom: 1px solid rgba(19, 33, 29, .16);
}

.page-faq .faq-compare__table tbody tr:last-child th,
.page-faq .faq-compare__table tbody tr:last-child td {
  border-bottom: none;
}

/* ---------- 普通图 ---------- */
.page-faq .faq-figure {
  margin: 26px 0 0;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.88) contrast(1.04);
}

.page-faq .faq-figure__cap {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--line);
  border-top: 1px solid var(--line);
}

/* ---------- 差异来源 ---------- */
.page-faq .faq-gaps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-gaps__row {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 4px 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-gaps__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
  padding-top: 3px;
}

.page-faq .faq-gaps__t {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-gaps__d {
  margin: 8px 0 0;
  grid-column: 2;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

/* ---------- 查询路径 ---------- */
.page-faq .faq-route {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  counter-reset: routestep;
}

.page-faq .faq-route__step {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--line-soft);
  align-items: baseline;
}

.page-faq .faq-route__step:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-route__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .faq-route__txt {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
}

/* ---------- 版本留痕 ---------- */
.page-faq .faq-log {
  margin: 26px 0 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-log__row {
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-log__row dt {
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-faq .faq-log__row dt::before {
  content: "▚";
  color: var(--cyan);
  margin-right: 10px;
  font-size: 12px;
}

.page-faq .faq-log__row dd {
  margin: 8px 0 0 22px;
  font-size: 15px;
  line-height: 1.76;
  color: var(--silver);
}

/* ---------- 提问 ---------- */
.page-faq .faq-item--last {
  border-top-color: var(--cyan);
}

.page-faq .faq-ask__link {
  margin-top: 22px;
}

/* ---------- 按钮在深底上的适配 ---------- */
.page-faq .btn {
  border-radius: 0;
}

/* ---------- 窄屏微调 ---------- */
@media (max-width: 519px) {
  .page-faq .faq-hero__meta {
    grid-template-columns: 1fr;
  }

  .page-faq .faq-fields__row,
  .page-faq .faq-gaps__row {
    grid-template-columns: 36px 1fr;
  }

  .page-faq .faq-route__step {
    grid-template-columns: 34px 1fr;
    gap: 10px;
  }

  .page-faq .faq-log__row dd {
    margin-left: 0;
  }
}

/* ---------- 中屏：索引转为横向 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-hero__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-hero__cell {
    border-bottom: none;
    border-right: 1px solid var(--line-soft);
    padding: 16px 16px 16px 0;
  }

  .page-faq .faq-hero__cell:last-child {
    border-right: none;
  }
}

/* ---------- 桌面：侧栏常驻 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: 1.1fr .9fr;
    align-items: stretch;
  }

  .page-faq .faq-hero__figure {
    align-self: stretch;
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
    padding-left: 0;
    border-left: none;
    border-right: 1px solid var(--line);
    padding-right: 20px;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-body {
    grid-template-columns: calc(var(--faq-rail-w) + 40px) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 96px);
  }
}

/* ---------- 动效尊重 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__list a,
  .page-faq .faq-diagram__hit,
  .page-faq .faq-diagram__lab {
    transition: none;
  }

  .page-faq .faq-rail__list a:hover,
  .page-faq .faq-rail__list a:focus-visible {
    padding-left: 0;
  }
}