.page-faq {
  --faq-rail: 212px;
  --faq-sticky: 92px;
  --faq-soft: #3A3A44;
}

.page-faq [id] {
  scroll-margin-top: 96px;
}

.page-faq .breadcrumbs {
  margin-bottom: 20px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-intro {
  position: relative;
  overflow: hidden;
  padding-block: clamp(30px, 5.5vw, 62px) clamp(34px, 6vw, 66px);
}

.page-faq .faq-intro::after {
  content: "";
  position: absolute;
  inset: auto -16% -56% 34%;
  height: 340px;
  background: radial-gradient(closest-side, rgba(30, 63, 214, .34), transparent 72%);
  pointer-events: none;
}

.page-faq .faq-intro .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 5.4vw, 52px);
  line-height: 1.16;
  letter-spacing: .01em;
  color: var(--white);
}

.page-faq .faq-mark {
  display: block;
  width: 70px;
  height: 4px;
  margin: 20px 0 0;
  border-radius: var(--r-pill);
  background: var(--ruby);
}

.page-faq .faq-lede {
  max-width: 62ch;
  margin-top: 20px;
  color: rgba(255, 255, 255, .78);
}

.page-faq .faq-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-quick__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 18px;
  border: 1px solid var(--line-light);
  border-radius: var(--r-pill);
  color: rgba(255, 255, 255, .86);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: border-color var(--ease), background-color var(--ease), transform var(--ease);
}

.page-faq .faq-quick__item:hover,
.page-faq .faq-quick__item:focus-visible {
  border-color: var(--ruby);
  background: rgba(224, 27, 60, .14);
  transform: translateY(-2px);
  outline: none;
}

.page-faq .faq-quick__item:focus-visible {
  box-shadow: 0 0 0 2px var(--ruby);
}

.page-faq .faq-quick__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gold);
}

/* ---------- 主体两栏 ---------- */

.page-faq .faq-main {
  padding-block: clamp(34px, 5vw, 60px) clamp(44px, 7vw, 84px);
}

.page-faq .guide-grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 44px);
}

.page-faq .guide-rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
}

.page-faq .guide-rail__label,
.page-faq .guide-rail__foot {
  display: none;
}

.page-faq .guide-rail__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--line-ink);
  border-radius: var(--r-pill);
  background: var(--white);
  color: var(--ink);
  font-size: 13.5px;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--ease), color var(--ease), background-color var(--ease);
}

.page-faq .guide-rail__link .index-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--grey);
}

.page-faq .guide-rail__link:hover,
.page-faq .guide-rail__link:focus-visible {
  border-color: var(--ruby);
  outline: none;
}

.page-faq .guide-rail__link.is-active {
  border-color: var(--ruby);
  background: var(--ruby-soft);
  color: var(--ruby);
}

.page-faq .guide-rail__link.is-active .index-rail__num {
  color: var(--ruby);
}

.page-faq .guide-body {
  display: grid;
  gap: clamp(40px, 6vw, 72px);
}

.page-faq .faq-block {
  display: grid;
  gap: clamp(20px, 3vw, 30px);
}

.page-faq .faq-block .section-title {
  font-family: var(--font-display);
  font-size: clamp(23px, 3.2vw, 34px);
  line-height: 1.28;
}

.page-faq .faq-block .lede {
  max-width: 60ch;
  color: var(--grey);
}

/* ---------- 平板步骤 ---------- */

.page-faq .step-map {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .step-map__line {
  stroke: var(--line);
  stroke-width: 1;
  stroke-dasharray: 4 7;
}

.page-faq .step-map__node {
  fill: var(--paper);
  stroke: var(--gold);
  stroke-width: 1.5;
}

.page-faq .step-map__node--start {
  fill: var(--ruby);
  stroke: var(--ruby);
}

.page-faq .pad-stage {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
}

.page-faq .pad-shot img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: calc(var(--r-lg) - 6px);
}

.page-faq .pad-steps {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .pad-step {
  position: relative;
  padding: 18px 20px 18px 22px;
  border-radius: var(--r-lg);
  background: var(--white);
  border: 1px solid var(--line-ink);
  overflow: hidden;
  transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
}

.page-faq .pad-step::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--line);
  transition: background-color var(--ease);
}

.page-faq .pad-step:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(224, 27, 60, .35);
}

.page-faq .pad-step:hover::before {
  background: var(--ruby);
}

.page-faq .pad-step__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ruby);
}

.page-faq .pad-step__title {
  margin: 6px 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}

.page-faq .pad-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--faq-soft);
}

.page-faq .pad-step__stop {
  margin: 10px 0 0;
  padding: 8px 12px;
  border-radius: var(--r-md);
  background: var(--ruby-soft);
  font-size: 13px;
  line-height: 1.65;
  color: #8C1226;
}

.page-faq .pad-stage .media-frame {
  margin: 0;
}

/* ---------- 规则三条路 ---------- */

.page-faq .rule-paths {
  display: grid;
  gap: 14px;
}

.page-faq .rule-path {
  padding: 20px 22px;
  border-radius: var(--r-lg);
  background: var(--white);
  border: 1px solid var(--line-ink);
  transition: transform var(--ease), box-shadow var(--ease);
}

.page-faq .rule-path:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.page-faq .rule-path__title {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}

.page-faq .rule-path__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--faq-soft);
}

.page-faq .rule-tip {
  margin: 0;
  padding: 14px 18px;
  border-left: 3px solid var(--sapphire);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: rgba(30, 63, 214, .07);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--faq-soft);
}

.page-faq .rule-tip a,
.page-faq .glossary-foot a,
.page-faq .guide-rail__foot a {
  color: var(--sapphire);
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 常见问题 ---------- */

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-veil {
  display: none;
}

.page-faq .faq-veil img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: calc(var(--r-lg) - 6px);
}

.page-faq .faq-list {
  display: grid;
  gap: clamp(28px, 4vw, 42px);
}

.page-faq .faq-cat {
  display: grid;
  gap: 2px;
  padding: 20px 22px 22px;
  border-radius: var(--r-lg);
  background: var(--white);
  border: 1px solid var(--line-ink);
}

.page-faq .faq-cat__title {
  margin: 0 0 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-ink);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}

.page-faq .faq-cat--watch .faq-cat__title { box-shadow: 0 2px 0 -1px var(--sapphire); }
.page-faq .faq-cat--event .faq-cat__title { box-shadow: 0 2px 0 -1px var(--ruby); }
.page-faq .faq-cat--account .faq-cat__title { box-shadow: 0 2px 0 -1px var(--gold); }
.page-faq .faq-cat--device .faq-cat__title { box-shadow: 0 2px 0 -1px var(--emerald); }

.page-faq .qa {
  border-bottom: 1px solid var(--line-ink);
}

.page-faq .qa:last-child {
  border-bottom: 0;
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 0;
  cursor: pointer;
  list-style: none;
  transition: color var(--ease);
}

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

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--ruby);
}

.page-faq .qa[open] .qa__q::after {
  content: "−";
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--ruby);
  outline-offset: 3px;
  border-radius: 6px;
}

.page-faq .qa__idx {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--grey);
  padding-top: 3px;
}

.page-faq .qa__text {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.66;
  color: var(--ink);
}

.page-faq .qa:hover .qa__text {
  color: var(--ruby);
}

.page-faq .qa__a {
  padding: 0 26px 18px 34px;
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 66ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faq-soft);
}

/* ---------- 术语表 ---------- */

.page-faq .glossary {
  padding-block: clamp(38px, 6vw, 72px) clamp(44px, 7vw, 80px);
}

.page-faq .glossary .section-title {
  font-family: var(--font-display);
  font-size: clamp(23px, 3.2vw, 34px);
  line-height: 1.28;
}

.page-faq .glossary .lede {
  max-width: 58ch;
  color: rgba(255, 255, 255, .72);
}

.page-faq .glossary-list {
  margin-top: clamp(22px, 3vw, 34px);
  border-top: 1px solid var(--line-light);
}

.page-faq .term {
  display: grid;
  gap: 4px;
  padding: 15px 4px;
  border-bottom: 1px solid var(--line-light);
  border-radius: var(--r-md);
  transition: background-color var(--ease);
}

.page-faq .term:hover,
.page-faq .term:focus-within {
  background: rgba(255, 255, 255, .045);
  outline: none;
}

.page-faq .term__name {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--gold);
}

.page-faq .term__hint {
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(255, 255, 255, .86);
  opacity: 1;
  transform: none;
  transition: opacity var(--ease), transform var(--ease), color var(--ease);
}

.page-faq .glossary-foot {
  margin: clamp(24px, 3vw, 34px) 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(255, 255, 255, .72);
}

.page-faq .glossary-foot a {
  color: var(--ruby);
}

/* ---------- 平板及以上 ---------- */

@media (min-width: 720px) {
  .page-faq .pad-stage {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .pad-shot {
    position: sticky;
    top: var(--faq-sticky);
  }

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

  .page-faq .faq-cat {
    padding: 24px 28px 26px;
  }

  .page-faq .term {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 22px;
    align-items: baseline;
    padding: 16px 8px;
  }
}

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

  .page-faq .guide-rail {
    position: sticky;
    top: var(--faq-sticky);
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .guide-rail__label {
    display: block;
    margin: 0 0 12px;
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: .1em;
    color: var(--grey);
  }

  .page-faq .guide-rail__link {
    display: flex;
    width: 100%;
    margin-bottom: 6px;
    padding: 10px 14px;
    background: transparent;
    border-color: transparent;
    border-left: 2px solid var(--line-ink);
    border-radius: 0 var(--r-md) var(--r-md) 0;
  }

  .page-faq .guide-rail__link:hover,
  .page-faq .guide-rail__link:focus-visible {
    border-left-color: var(--ruby);
    background: rgba(224, 27, 60, .06);
  }

  .page-faq .guide-rail__link.is-active {
    border-left-color: var(--ruby);
    background: var(--ruby-soft);
  }

  .page-faq .guide-rail__foot {
    display: block;
    margin: 18px 0 0;
    padding-top: 16px;
    border-top: 1px solid var(--line-ink);
    font-size: 13px;
    line-height: 1.72;
    color: var(--grey);
  }

  .page-faq .guide-rail__foot a {
    display: inline-block;
    margin-top: 4px;
  }

  .page-faq .faq-veil {
    display: block;
    height: 188px;
    margin: 0;
    border-radius: var(--r-lg);
    overflow: hidden;
  }
}

@media (min-width: 1180px) {
  .page-faq .pad-steps {
    gap: 16px;
  }

  .page-faq .faq-veil {
    height: 210px;
  }
}

@media (hover: none) {
  .page-faq .term__hint {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quick__item,
  .page-faq .pad-step,
  .page-faq .rule-path,
  .page-faq .term,
  .page-faq .term__hint,
  .page-faq .guide-rail__link,
  .page-faq .qa__q {
    transition: none;
  }

  .page-faq .faq-quick__item:hover,
  .page-faq .pad-step:hover,
  .page-faq .rule-path:hover {
    transform: none;
  }
}
</main>