.page-faq {
  --faq-toc-width: 240px;
  --faq-gap: 2rem;
}

.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(1.5rem, 4vw, 3rem);
  border-bottom: 2px solid var(--c-charcoal);
}

.page-faq .faq-hero__strip {
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 6px;
  pointer-events: none;
  background: linear-gradient(90deg,
    var(--c-peacock) 0 16.6%,
    var(--c-amber) 16.6% 33.2%,
    var(--c-coral) 33.2% 49.8%,
    var(--c-teal) 49.8% 66.4%,
    var(--c-violet) 66.4% 83%,
    var(--c-neon) 83% 100%);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-headline);
  font-size: clamp(1.9rem, 6vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0.5rem 0 1rem;
  max-width: 16ch;
  text-wrap: balance;
}

.page-faq .faq-hero__lead {
  font-size: 1rem;
  line-height: 1.8;
  max-width: 62ch;
  margin: 0;
}

.page-faq .faq-hero__tags {
  margin-top: 1.25rem;
}

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

.page-faq .faq-hero__aside-card {
  background: var(--c-charcoal);
  color: var(--c-warm-white);
  padding: 1rem;
  border-radius: var(--radius);
  display: grid;
  gap: 0.75rem;
  box-shadow: var(--shadow-md);
}

.page-faq .faq-hero__aside-text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
}

.page-faq .faq-layout {
  display: grid;
  gap: 1.5rem;
  padding-block: 2rem;
}

.page-faq .faq-toc {
  display: grid;
  gap: 1rem;
  border-bottom: 1px solid rgba(45, 45, 45, 0.15);
  padding-bottom: 1.25rem;
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.25rem;
}

.page-faq .faq-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--c-ink);
  font-weight: 600;
  padding: 0.55rem 0.5rem;
  border-bottom: 1px dashed rgba(45, 45, 45, 0.15);
  transition: background 0.15s ease, transform 0.15s ease;
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  background: var(--c-neon);
  color: var(--c-charcoal);
  transform: translateX(4px);
}

.page-faq .faq-toc__list .mono {
  font-size: 0.75rem;
}

.page-faq .faq-toc__pin {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-faq .faq-toc__pin a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--c-ink);
  text-decoration: none;
  border: 1px solid var(--c-ink);
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.55rem;
  transition: background 0.15s ease;
}

.page-faq .faq-toc__pin a:hover,
.page-faq .faq-toc__pin a:focus-visible {
  background: var(--c-ink);
  color: var(--c-warm-white);
}

.page-faq .faq-block {
  background: var(--c-warm-white);
  border: 1px solid rgba(45, 45, 45, 0.25);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: clamp(1.25rem, 3vw, 2.5rem);
  display: grid;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.page-faq .faq-block--amber {
  background: var(--c-amber);
}

.page-faq .faq-block--peacock {
  background: var(--c-peacock);
}

.page-faq .faq-block--violet {
  background: var(--c-violet);
}

.page-faq .faq-block--coral {
  background: var(--c-coral);
}

.page-faq .faq-block .section-head {
  border-bottom: 2px solid var(--c-charcoal);
  padding-bottom: 0.75rem;
}

.page-faq .faq-block .section-head__idx {
  display: inline-block;
  background: var(--c-charcoal);
  color: var(--c-warm-white);
  padding: 0.1rem 0.4rem;
  font-size: 0.8rem;
}

.page-faq .quality-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.page-faq .quality-card {
  background: var(--c-warm-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 1.1rem;
  border-top: 6px solid var(--c-success);
  display: grid;
  gap: 0.9rem;
}

.page-faq .quality-card--sd {
  border-top-color: var(--c-success);
}

.page-faq .quality-card--hd {
  border-top-color: var(--c-buffer);
}

.page-faq .quality-card--fhd {
  border-top-color: var(--c-peacock);
}

.page-faq .quality-card--uhd {
  border-top-color: var(--c-violet);
}

.page-faq .quality-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.page-faq .quality-card__flag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--c-charcoal);
  color: var(--c-warm-white);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

.page-faq .quality-card__name {
  font-family: var(--font-headline);
  font-size: 2rem;
  line-height: 1;
  margin: 0;
  text-transform: uppercase;
}

.page-faq .quality-card__meta {
  margin: 0;
  display: grid;
  gap: 0.35rem;
}

.page-faq .quality-card__meta div {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.85rem;
  border-bottom: 1px dashed rgba(45, 45, 45, 0.25);
  padding-bottom: 0.25rem;
}

.page-faq .quality-card__meta dt {
  opacity: 0.7;
}

.page-faq .quality-card__meta dd {
  margin: 0;
  font-weight: 600;
  text-align: right;
}

.page-faq .danmaku-layout {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}

.page-faq .danmaku-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.page-faq .danmaku-step {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 0.75rem;
  background: rgba(255, 248, 240, 0.88);
  border-radius: var(--radius);
  padding: 1rem;
}

.page-faq .danmaku-step__num {
  font-family: var(--font-mono);
  font-weight: 700;
  background: var(--c-neon);
  color: var(--c-charcoal);
  display: inline-block;
  height: 2rem;
  line-height: 2rem;
  text-align: center;
  border-radius: var(--radius-sm);
}

.page-faq .danmaku-step__body h3 {
  margin: 0 0 0.3rem;
  font-size: 1rem;
}

.page-faq .danmaku-step__body p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-faq .figure {
  margin: 0;
  background: var(--c-warm-white);
  border-radius: var(--radius);
  padding: 0.75rem;
  display: grid;
  gap: 0.5rem;
  box-shadow: var(--shadow-sm);
}

.page-faq .figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.page-faq .figure__caption {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  opacity: 0.75;
}

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

.page-faq .figure--cast {
  max-width: 460px;
  margin-inline: auto;
  text-align: center;
}

.page-faq .cast-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-faq .cast-card {
  background: var(--c-warm-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 1.25rem;
  display: grid;
  align-content: start;
  gap: 0.9rem;
  border-bottom: 4px solid var(--c-charcoal);
}

.page-faq .cast-card__title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.1rem;
  margin: 0;
}

.page-faq .cast-card__icon {
  font-size: 1.4rem;
  line-height: 1;
}

.page-faq .cast-card__steps {
  margin: 0;
  padding-left: 1.25rem;
  display: grid;
  gap: 0.4rem;
}

.page-faq .cast-card__steps li {
  font-size: 0.9rem;
  line-height: 1.6;
}

.page-faq .cast-card .tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: auto;
}

.page-faq .faq-block details {
  background: rgba(255, 248, 240, 0.75);
  border: 1px solid rgba(30, 30, 30, 0.25);
  border-radius: var(--radius);
  padding: 0.8rem 1rem;
}

.page-faq .faq-block details summary {
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.page-faq .faq-block details summary::before {
  content: "+";
  font-family: var(--font-mono);
  background: var(--c-charcoal);
  color: var(--c-warm-white);
  width: 1.5rem;
  height: 1.5rem;
  display: inline-grid;
  place-items: center;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.9rem;
}

.page-faq .faq-block details[open] summary::before {
  content: "–";
}

.page-faq .faq-block details[open] summary {
  padding-bottom: 0.5rem;
  border-bottom: 1px dashed rgba(45, 45, 45, 0.2);
}

.page-faq .faq-block details p {
  margin: 0.75rem 0 0 2rem;
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-faq .faq-qa {
  display: grid;
  gap: 0.75rem;
}

.page-faq .faq-qa__item summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  cursor: pointer;
}

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

.page-faq .faq-qa__item summary::before {
  content: "Q";
  font-family: var(--font-mono);
  font-weight: 700;
  background: var(--c-charcoal);
  color: var(--c-warm-white);
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
}

.page-faq .faq-qa__item[open] summary::after {
  content: "收起";
  margin-left: auto;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  opacity: 0.6;
}

.page-faq .faq-qa__item:not([open]) summary::after {
  content: "展开";
  margin-left: auto;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  opacity: 0.4;
}

.page-faq .faq-qa__body {
  margin-top: 0.75rem;
  padding: 0.75rem 1rem 0.25rem 2.5rem;
  border-top: 1px dashed rgba(45, 45, 45, 0.25);
}

.page-faq .faq-qa .faq-qa__body p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-faq .faq-more__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-faq .faq-more__card {
  display: grid;
  gap: 0.5rem;
  background: var(--c-charcoal);
  color: var(--c-warm-white);
  text-decoration: none;
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: background 0.15s ease, transform 0.15s ease;
}

.page-faq .faq-more__card:hover,
.page-faq .faq-more__card:focus-visible {
  background: var(--c-neon);
  color: var(--c-charcoal);
  transform: translateY(-2px);
}

.page-faq .faq-more__idx {
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.page-faq .faq-more__title {
  font-family: var(--font-headline);
  font-size: 1.6rem;
  text-transform: uppercase;
}

.page-faq .faq-more__desc {
  font-size: 0.85rem;
  opacity: 0.8;
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) 320px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-toc-width) minmax(0, 1fr);
    gap: var(--faq-gap);
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 1rem;
    border-right: 1px solid rgba(45, 45, 45, 0.15);
    border-bottom: 0;
    padding-bottom: 0;
    padding-right: 1rem;
  }

  .page-faq .danmaku-layout {
    grid-template-columns: minmax(0, 1fr) 320px;
  }
}

@media (min-width: 1100px) {
  .page-faq .quality-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (max-width: 640px) {
  .page-faq .quality-grid {
    grid-template-columns: 1fr;
  }

  .page-faq .faq-toc__list a {
    padding-inline: 0;
  }
}