.page-faq {
  --faq-rail: 2px;
  --faq-cap: 60ch;
  --faq-line-soft: 1px solid rgba(24, 35, 58, 0.9);
}

/* ---------- 开篇 ---------- */
.page-faq .faq-open {
  padding: var(--sp-4) 0 var(--sp-3);
}

.page-faq .faq-open__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-3);
  align-items: start;
}

.page-faq .faq-h1 {
  margin: 0 0 var(--sp-2);
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(30px, 8vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper-100);
  transform: skewX(-3deg);
  transform-origin: left center;
}

.page-faq .faq-open__lead .st-lede {
  margin: 0 0 var(--sp-3);
  max-width: 46ch;
  color: var(--mist-400);
}

.page-faq .faq-open__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

/* 快速查排名：贴边数据牌 */
.page-faq .faq-quick {
  position: relative;
  overflow: hidden;
  padding: var(--sp-3);
  background:
    repeating-linear-gradient(135deg, rgba(224, 23, 127, 0.06) 0 2px, transparent 2px 12px),
    var(--ink-800);
  border: var(--line);
  border-left: 2px solid var(--cyan-400);
}

.page-faq .faq-quick::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 229, 208, 0.08), transparent 55%);
  pointer-events: none;
}

.page-faq .faq-quick__num {
  margin: var(--sp-1) 0 var(--sp-3);
  font-size: clamp(40px, 12vw, 64px);
  line-height: 0.95;
  color: var(--white-000);
  text-shadow: 0 0 22px rgba(0, 229, 208, 0.35);
}

.page-faq .faq-quick__num .st-kpi__unit {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--cyan-400);
}

.page-faq .faq-quick__list {
  margin: 0 0 var(--sp-2);
  padding: 0;
  border-top: var(--line);
}

.page-faq .faq-quick__row {
  display: flex;
  justify-content: space-between;
  gap: var(--sp-2);
  padding: 10px 0;
  border-bottom: var(--line);
}

.page-faq .faq-quick__row dt {
  font-size: 13px;
  color: var(--mist-400);
}

.page-faq .faq-quick__row dd {
  margin: 0;
  font-size: 14px;
  color: var(--paper-100);
}

/* ---------- 筛选与锚点 ---------- */
.page-faq .faq-board {
  padding-bottom: var(--sp-4);
}

.page-faq .faq-board__head {
  display: grid;
  gap: var(--sp-1);
  margin-bottom: var(--sp-2);
}

.page-faq .faq-board__head .st-h2 {
  margin: 0;
}

.page-faq .faq-board__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-2);
  padding: var(--sp-2) 0;
  border-top: var(--line);
  border-bottom: var(--line);
}

.page-faq .faq-anchors {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2) var(--sp-3);
}

.page-faq .faq-anchors__link {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-anchors__link:hover,
.page-faq .faq-anchors__link:focus-visible {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

/* ---------- 章节 ---------- */
.page-faq .faq-board__scope {
  margin-top: var(--sp-3);
}

.page-faq .faq-chapter {
  margin-bottom: var(--sp-4);
  scroll-margin-top: 96px;
}

.page-faq .faq-chapter__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--sp-2);
  align-items: start;
  padding-bottom: var(--sp-2);
  border-bottom: var(--faq-rail) solid var(--teal-900);
}

.page-faq .faq-chapter__no {
  font-size: clamp(28px, 9vw, 44px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--cyan-400);
  text-stroke: 1px var(--cyan-400);
}

.page-faq .faq-chapter__meta .st-h3 {
  margin: 0 0 6px;
  color: var(--paper-100);
}

.page-faq .faq-chapter__meta .st-note {
  margin: 0;
  max-width: var(--faq-cap);
}

.page-faq .faq-chapter__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-3);
  margin-top: var(--sp-2);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  min-width: 0;
}

.page-faq .faq-item {
  position: relative;
  padding-left: var(--sp-3);
  border-bottom: var(--line);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--faq-rail);
  background: var(--ink-700);
  transition: background 0.22s ease, box-shadow 0.22s ease;
}

.page-faq .faq-item[open]::before {
  background: var(--cyan-400);
  box-shadow: 0 0 14px rgba(0, 229, 208, 0.55);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--sp-2);
  align-items: baseline;
  padding: var(--sp-2) 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q:focus-visible {
  outline: 1px solid var(--cyan-400);
  outline-offset: 4px;
}

.page-faq .faq-item__idx {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan-400);
}

.page-faq .faq-item__t {
  font-size: 17px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--paper-100);
  transition: color 0.18s ease;
}

.page-faq .faq-item__q:hover .faq-item__t {
  color: var(--cyan-400);
}

.page-faq .faq-item[open] .faq-item__t {
  color: var(--white-000);
}

.page-faq .faq-item__a {
  max-width: var(--faq-cap);
  padding-bottom: var(--sp-3);
  animation: faq-answer-in 0.28s ease both;
}

.page-faq .faq-item__a p {
  margin: 0;
  color: rgba(232, 238, 247, 0.86);
  line-height: 1.75;
}

.page-faq .faq-item__a a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 208, 0.4);
}

.page-faq .faq-item__a a:hover {
  border-bottom-color: var(--cyan-400);
}

.page-faq .faq-item__tools {
  margin-top: var(--sp-2);
}

.page-faq .faq-copy {
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--orange-500);
  background: transparent;
  border: var(--line-or);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease;
}

.page-faq .faq-copy:hover,
.page-faq .faq-copy:focus-visible {
  background: rgba(255, 106, 31, 0.12);
}

.page-faq .faq-copy[data-copied]::after {
  content: " 已复制";
  color: var(--cyan-400);
}

@keyframes faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: var(--line);
  background: var(--ink-800);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.06);
}

.page-faq .faq-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(7, 11, 20, 0) 42%, rgba(7, 11, 20, 0.78) 100%),
    repeating-linear-gradient(0deg, rgba(0, 229, 208, 0.05) 0 1px, transparent 1px 4px);
  pointer-events: none;
}

.page-faq .faq-figure__cap {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: var(--sp-2);
  border-top: var(--line);
  background: var(--ink-800);
}

.page-faq .faq-figure--tall {
  max-width: 320px;
}

/* ---------- 空态 ---------- */
.page-faq .st-filter-empty {
  padding: var(--sp-3);
  border: 1px dashed var(--ink-700);
  color: var(--mist-400);
}

.page-faq .st-filter-empty p {
  margin: 0;
}

/* ---------- 收尾说明带 ---------- */
.page-faq .faq-handoff {
  margin-top: var(--sp-4);
  background:
    repeating-linear-gradient(135deg, rgba(242, 193, 78, 0.05) 0 2px, transparent 2px 14px),
    var(--teal-900);
  border-top: 1px solid rgba(0, 229, 208, 0.25);
  border-bottom: var(--line);
}

.page-faq .faq-handoff__inner {
  padding: var(--sp-4) 0;
  display: grid;
  gap: var(--sp-2);
  max-width: 70ch;
}

.page-faq .faq-handoff__inner .st-h2 {
  margin: 0;
  color: var(--paper-100);
}

.page-faq .faq-handoff__text {
  margin: 0;
  color: rgba(232, 238, 247, 0.88);
  line-height: 1.75;
  max-width: var(--faq-cap);
}

.page-faq .faq-handoff__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-1);
}

/* ---------- 响应式 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-open {
    padding: var(--sp-5) 0 var(--sp-4);
  }

  .page-faq .faq-open__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--sp-4);
  }

  .page-faq .faq-board__bar {
    position: sticky;
    top: 0;
    z-index: 12;
    background: var(--ink-900);
  }

  .page-faq .faq-chapter__body--media {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    gap: var(--sp-4);
  }

  .page-faq .faq-chapter__body--tall {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
  }

  .page-faq .faq-item__t {
    font-size: 18px;
  }

  .page-faq .faq-handoff__inner {
    padding: var(--sp-5) 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__a {
    animation: none;
  }

  .page-faq .faq-item::before,
  .page-faq .faq-item__t,
  .page-faq .faq-anchors__link {
    transition: none;
  }
}