.page-faq {
  --faq-canvas-gap: clamp(2.75rem, 7vw, 5.25rem);
  --faq-head-gap: clamp(1.5rem, 4vw, 2.25rem);
  --faq-index-w: 206px;
  background:
    radial-gradient(112% 62% at 90% -6%, rgba(124, 58, 237, .2), transparent 62%),
    radial-gradient(88% 52% at 2% 14%, rgba(34, 211, 238, .1), transparent 60%);
  background-repeat: no-repeat;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-bottom: clamp(2.25rem, 5vw, 3.5rem);
}

.page-faq .faq-hero__shell {
  display: grid;
  gap: clamp(1.75rem, 5vw, 3rem);
}

.page-faq .faq-hero .crumbs {
  margin-bottom: 1.25rem;
}

.page-faq .faq-hero .plate {
  margin-bottom: 1.05rem;
}

.page-faq .faq-hero__title {
  font-size: clamp(2.3rem, 7.4vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: -.02em;
  font-weight: 300;
  margin: 0 0 1rem;
  color: var(--text);
}

.page-faq .faq-hero__lede {
  max-width: 48ch;
  margin: 0 0 1.6rem;
  color: var(--text-soft);
  font-size: clamp(1rem, 2.4vw, 1.08rem);
  line-height: 1.75;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-bottom: 1.9rem;
}

.page-faq .faq-ledger {
  display: grid;
  grid-template-columns: 1fr;
  gap: .85rem;
  margin: 0;
  padding-top: 1.3rem;
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-ledger dt {
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--text-soft);
  margin-bottom: .3rem;
}

.page-faq .faq-ledger dd {
  margin: 0;
  color: var(--text-dim);
  font-size: .88rem;
  line-height: 1.5;
}

.page-faq .faq-ledger__num {
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--amber);
  margin-right: .35rem;
  letter-spacing: -.01em;
}

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

.page-faq .faq-hero__media img,
.page-faq .faq-rules__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 索引 + 画布骨架 ---------- */

.page-faq .faq-body {
  display: grid;
  gap: clamp(2rem, 5vw, 3.25rem);
  padding-bottom: clamp(3.5rem, 9vw, 6.5rem);
}

.page-faq .faq-index {
  border-top: 1px solid var(--line);
  padding-top: .95rem;
  min-width: 0;
}

.page-faq .faq-index__title {
  margin: 0 0 .8rem;
  font-size: .74rem;
  letter-spacing: .16em;
  color: var(--text-soft);
}

.page-faq .faq-index__list {
  display: flex;
  gap: .5rem;
  margin: 0;
  padding: 0 0 .35rem;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

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

.page-faq .faq-index__list a {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .5rem .85rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-dim);
  font-size: .85rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-index__list a .mono {
  font-size: .72rem;
  color: var(--violet);
}

.page-faq .faq-index__list a:hover {
  color: var(--text);
  border-color: rgba(124, 58, 237, .75);
  background: rgba(124, 58, 237, .16);
}

.page-faq .faq-index__list a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  color: var(--text);
}

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

/* ---------- 章节骨架 ---------- */

.page-faq .faq-block {
  border-left: 2px solid transparent;
  padding-left: clamp(.85rem, 2.6vw, 1.4rem);
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
  transition: border-color .35s var(--ease);
}

.page-faq .faq-block:target {
  border-left-color: var(--cyan);
}

.page-faq .faq-block__head {
  margin-bottom: var(--faq-head-gap);
}

.page-faq .faq-block__head .h-sec {
  font-size: clamp(1.58rem, 4.1vw, 2.3rem);
  line-height: 1.2;
  letter-spacing: -.01em;
  margin: .65rem 0 .8rem;
  color: var(--text);
}

.page-faq .faq-block__lede {
  margin: 0;
  max-width: 58ch;
  color: var(--text-soft);
  font-size: .98rem;
  line-height: 1.8;
}

/* ---------- 三步路径 ---------- */

.page-faq .faq-steps {
  position: relative;
  display: grid;
  gap: clamp(1.35rem, 3.4vw, 2rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  left: 6px;
  top: .7rem;
  bottom: .7rem;
  width: 1px;
  background: linear-gradient(180deg, var(--violet), var(--cyan) 56%, transparent);
}

.page-faq .faq-steps__item {
  position: relative;
  padding-left: 2.1rem;
}

.page-faq .faq-steps__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: .38rem;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  border: 2px solid var(--violet);
  background: var(--ink-950);
}

.page-faq .faq-steps__item:nth-child(2)::before {
  border-color: var(--cyan);
}

.page-faq .faq-steps__item:nth-child(3)::before {
  border-color: var(--amber);
}

.page-faq .faq-steps__no {
  display: block;
  margin-bottom: .4rem;
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-faq .faq-steps__title {
  margin: 0 0 .5rem;
  font-size: clamp(1.08rem, 2.7vw, 1.32rem);
  line-height: 1.4;
  font-weight: 600;
  color: var(--text);
}

.page-faq .faq-steps__item p {
  margin: 0;
  max-width: 60ch;
  color: var(--text-soft);
  font-size: .96rem;
  line-height: 1.8;
}

/* ---------- 七级阶梯 ---------- */

.page-faq .faq-ladder {
  display: grid;
  gap: .62rem;
  margin: 0 0 clamp(1.5rem, 4vw, 2.2rem);
  padding: 0;
  list-style: none;
}

.page-faq .faq-ladder__step {
  display: grid;
  grid-template-columns: 3.2rem minmax(0, 1fr);
  align-items: center;
  gap: .85rem;
}

.page-faq .faq-ladder__no {
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--text-soft);
  text-align: right;
}

.page-faq .faq-ladder__track {
  display: block;
  height: 9px;
  border-radius: 999px;
  background: rgba(42, 58, 106, .55);
  overflow: hidden;
}

.page-faq .faq-ladder__fill {
  display: block;
  height: 100%;
  width: 26%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--violet), var(--cyan));
  transition: width .3s var(--ease);
}

.page-faq .faq-ladder__step:nth-child(2) .faq-ladder__fill { width: 36%; }
.page-faq .faq-ladder__step:nth-child(3) .faq-ladder__fill { width: 46%; }
.page-faq .faq-ladder__step:nth-child(4) .faq-ladder__fill { width: 57%; }
.page-faq .faq-ladder__step:nth-child(5) .faq-ladder__fill { width: 69%; }
.page-faq .faq-ladder__step:nth-child(6) .faq-ladder__fill { width: 84%; }
.page-faq .faq-ladder__step:nth-child(7) .faq-ladder__fill {
  width: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--amber));
}

.page-faq .faq-ladder__step:hover .faq-ladder__fill {
  filter: brightness(1.15);
}

.page-faq .faq-rules__media {
  margin: 0 0 clamp(1.5rem, 4vw, 2.2rem);
}

.page-faq .faq-rules__notes {
  padding: clamp(1.15rem, 3.2vw, 1.75rem);
  border-radius: var(--radius);
}

.page-faq .faq-rules__list {
  display: grid;
  gap: 1.05rem;
  margin: 0;
}

.page-faq .faq-rules__list dt {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--cyan);
  margin-bottom: .32rem;
}

.page-faq .faq-rules__list dd {
  margin: 0;
  max-width: 58ch;
  color: var(--text-dim);
  font-size: .94rem;
  line-height: 1.75;
}

/* ---------- 统计口径 ---------- */

.page-faq .faq-spec {
  margin: 0 0 clamp(1.3rem, 3.4vw, 1.8rem);
}

.page-faq .faq-note {
  margin: 0;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--text-soft);
}

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

.page-faq .faq-note a:hover {
  color: var(--magenta);
}

.page-faq .faq-note a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 问答手风琴 ---------- */

.page-faq .faq-qa {
  display: grid;
  gap: .7rem;
}

.page-faq .qa {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(16, 26, 58, .74), rgba(10, 16, 36, .58));
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease), background-color .25s var(--ease);
}

.page-faq .qa:hover {
  border-color: rgba(34, 211, 238, .5);
}

.page-faq .qa[open] {
  border-color: rgba(124, 58, 237, .68);
  box-shadow: 0 20px 46px -32px rgba(124, 58, 237, .95);
}

.page-faq .qa__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: .8rem;
  padding: 1rem 1.05rem;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__head:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: var(--radius);
}

.page-faq .qa__head:hover .qa__q {
  color: var(--text);
}

.page-faq .qa__no {
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--violet);
}

.page-faq .qa__q {
  font-size: clamp(1rem, 2.5vw, 1.1rem);
  line-height: 1.45;
  font-weight: 600;
  color: var(--text-dim);
  transition: color .2s var(--ease);
}

.page-faq .qa__mark {
  position: relative;
  width: 14px;
  height: 14px;
  flex: 0 0 auto;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform .25s var(--ease), opacity .25s var(--ease);
}

.page-faq .qa__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .qa__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__body {
  padding: 0 1.05rem 1.05rem;
}

.page-faq .qa__body p {
  margin: 0;
  max-width: 62ch;
  color: var(--text-soft);
  font-size: .95rem;
  line-height: 1.8;
}

.page-faq .qa__body p + p {
  margin-top: .7rem;
}

/* ---------- 反馈 ---------- */

.page-faq .faq-feedback {
  display: grid;
  gap: 1rem;
}

.page-faq .faq-feedback__card {
  padding: clamp(1.15rem, 3.2vw, 1.65rem);
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.page-faq .faq-feedback__card h3 {
  margin: 0 0 .6rem;
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--text);
}

.page-faq .faq-feedback__card p {
  margin: 0 0 1.05rem;
  color: var(--text-soft);
  font-size: .94rem;
  line-height: 1.8;
}

.page-faq .faq-feedback__card .dot-list {
  margin: 0;
  color: var(--text-soft);
  font-size: .94rem;
  line-height: 1.8;
}

/* ---------- 断点 ---------- */

@media (min-width: 560px) {
  .page-faq .faq-ledger {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-ledger__item + .faq-ledger__item {
    padding-left: 1rem;
    border-left: 1px solid var(--line);
  }
}

@media (min-width: 720px) {
  .page-faq .faq-steps__item {
    padding-left: 6.6rem;
  }

  .page-faq .faq-steps__no {
    position: absolute;
    left: 2.1rem;
    top: .28rem;
    margin: 0;
    text-align: left;
  }

  .page-faq .faq-steps::before {
    left: 6px;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-feedback {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }
}

@media (min-width: 940px) {
  .page-faq .faq-hero__shell {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr);
    align-items: center;
  }

  .page-faq .faq-hero__media {
    align-self: center;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 1.75rem);
    border-top: none;
    border-left: 1px solid var(--line);
    padding: .25rem 0 .25rem 1.15rem;
  }

  .page-faq .faq-index__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__list li + li {
    margin-top: .25rem;
  }

  .page-faq .faq-index__list a {
    display: flex;
    width: 100%;
    border: none;
    border-radius: var(--radius-sm);
    padding: .52rem .7rem;
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}