.page-faq {
  --group: var(--cyan);
  --faq-card-bg: linear-gradient(180deg, rgba(120, 180, 255, .07), rgba(120, 180, 255, 0) 62%), var(--panel);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(26px, 4.5vw, 60px) 0 clamp(24px, 3.5vw, 44px);
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 52px);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  max-width: 22em;
  font-size: clamp(30px, 6vw, 58px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-faq .faq-hero__lede {
  margin-top: 18px;
  max-width: 44em;
}

.page-faq .faq-index {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-index li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-index strong {
  color: var(--text);
  font-weight: 600;
}

.page-faq .faq-index__dot {
  width: 8px;
  height: 8px;
  margin-top: 9px;
  border-radius: 50%;
}

.page-faq .faq-index__dot--cyan {
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
}

.page-faq .faq-index__dot--magenta {
  background: var(--magenta);
  box-shadow: 0 0 12px var(--magenta);
}

.page-faq .faq-index__dot--amber {
  background: var(--amber);
  box-shadow: 0 0 12px var(--amber);
}

.page-faq .faq-stats {
  padding: clamp(20px, 2.6vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(140% 120% at 0% 0%, rgba(34, 230, 211, .12), transparent 58%),
    radial-gradient(120% 130% at 100% 100%, rgba(255, 61, 139, .12), transparent 60%),
    var(--panel);
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .faq-stats__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.page-faq .faq-stats__k {
  font-size: 13px;
  color: var(--muted);
}

.page-faq .faq-stats__v {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 34px);
  font-weight: 500;
  line-height: 1;
  color: var(--text);
}

.page-faq .faq-stats__note {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  position: relative;
  margin: 0 0 clamp(34px, 5.5vw, 68px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink);
}

.page-faq .faq-figure--inline {
  margin-bottom: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 8;
  object-fit: cover;
}

.page-faq .faq-figure--inline img {
  aspect-ratio: 10 / 7;
}

.page-faq .faq-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(118deg, rgba(34, 230, 211, .16), transparent 46%, rgba(255, 61, 139, .16));
}

.page-faq .faq-figure figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 30px 20px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
  background: linear-gradient(transparent, rgba(7, 10, 18, .92));
}

/* ---------- 问答区 ---------- */
.page-faq .faq-qa {
  padding: 0 0 clamp(36px, 5vw, 64px);
}

.page-faq .faq-qa__title {
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-faq .faq-qa__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  align-items: center;
}

.page-faq .tablist {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.page-faq .tablist::-webkit-scrollbar {
  display: none;
}

.page-faq .tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(14, 21, 36, .62);
  color: var(--muted);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .tab .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.page-faq .tab:hover {
  color: var(--text);
  border-color: rgba(232, 237, 247, .3);
}

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

.page-faq .tab[aria-selected="true"] {
  color: var(--text);
  border-color: var(--cyan);
  background: linear-gradient(180deg, rgba(34, 230, 211, .18), rgba(34, 230, 211, .04));
  box-shadow: 0 0 22px rgba(34, 230, 211, .18);
}

.page-faq .tab[aria-selected="true"] .num {
  color: var(--cyan);
}

.page-faq .faq-search {
  position: relative;
}

.page-faq .faq-search__input {
  width: 100%;
  padding: 12px 18px 12px 44px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(14, 21, 36, .74);
  color: var(--text);
  font: inherit;
  font-size: 15px;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .faq-search__input::placeholder {
  color: var(--muted);
}

.page-faq .faq-search__input:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(34, 230, 211, .16), 0 0 26px rgba(34, 230, 211, .2);
}

.page-faq .faq-search__icon {
  position: absolute;
  left: 17px;
  top: 50%;
  width: 14px;
  height: 14px;
  transform: translateY(-50%);
  border: 1.5px solid var(--muted);
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-search__icon::after {
  content: "";
  position: absolute;
  right: -5px;
  bottom: -3px;
  width: 7px;
  height: 1.5px;
  background: var(--muted);
  transform: rotate(45deg);
}

.page-faq .tabpanel {
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .tabpanel[hidden] {
  display: none;
}

.page-faq .tabpanel:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 8px;
  border-radius: 6px;
}

.page-faq [data-tab-panel="draw"] {
  --group: var(--cyan);
}

.page-faq [data-tab-panel="adapt"] {
  --group: var(--magenta);
}

.page-faq [data-tab-panel="feedback"] {
  --group: var(--amber);
}

.page-faq .qa-group {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-faq .qa-card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--faq-card-bg);
  overflow: hidden;
  transition: border-color .2s var(--ease);
}

.page-faq .qa-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--group);
  box-shadow: 0 0 16px var(--group);
}

.page-faq .qa-card:hover {
  border-color: rgba(232, 237, 247, .24);
}

.page-faq .qa-card[open] {
  border-color: var(--group);
}

.page-faq .qa-card > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 4px 14px;
  align-items: start;
  padding: 18px 18px 18px 20px;
}

.page-faq .qa-card > summary::-webkit-details-marker {
  display: none;
}

.page-faq .qa-card > summary::marker {
  content: "";
}

.page-faq .qa-card > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}

.page-faq .qa-card__idx {
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--group);
}

.page-faq .qa-card__q {
  font-size: clamp(16px, 1.7vw, 18px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--text);
}

.page-faq .qa-card__sign {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 6px;
}

.page-faq .qa-card__sign::before,
.page-faq .qa-card__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 12px;
  height: 1.5px;
  background: var(--muted);
  transform: translate(-50%, -50%);
  transition: transform .2s var(--ease), background .2s var(--ease);
}

.page-faq .qa-card__sign::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .qa-card[open] .qa-card__sign::before {
  background: var(--group);
}

.page-faq .qa-card[open] .qa-card__sign::after {
  transform: translate(-50%, -50%) rotate(0deg);
  background: var(--group);
}

.page-faq .qa-card__a {
  padding: 16px 20px 20px 52px;
  border-top: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(120, 180, 255, .08), transparent 78%);
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  opacity: .88;
}

.page-faq .qa-card__a p {
  margin: 0;
}

.page-faq .qa-card__a p + p {
  margin-top: 10px;
}

.page-faq .qa-card__a ul {
  list-style: none;
  margin: 12px 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .qa-card__a li {
  position: relative;
  padding-left: 18px;
}

.page-faq .qa-card__a li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--group);
  box-shadow: 0 0 10px var(--group);
}

.page-faq .qa-card__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 230, 211, .4);
}

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

/* ---------- 下一步 ---------- */
.page-faq .faq-next {
  padding: 0 0 clamp(48px, 7vw, 96px);
}

.page-faq .faq-next__card {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 46px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(115% 130% at 100% 0%, rgba(255, 61, 139, .18), transparent 56%),
    radial-gradient(105% 125% at 0% 100%, rgba(34, 230, 211, .16), transparent 56%),
    radial-gradient(80% 100% at 50% 120%, rgba(255, 154, 60, .12), transparent 60%),
    var(--panel);
}

.page-faq .faq-next__title {
  margin: 12px 0 0;
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.015em;
  color: var(--text);
}

.page-faq .faq-next__lede {
  margin: 16px 0 0;
  max-width: 46em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-next__facts {
  margin-top: clamp(20px, 2.6vw, 28px);
  display: grid;
  gap: 12px;
}

.page-faq .faq-next__fact {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(7, 10, 18, .55);
}

.page-faq .faq-next__k {
  display: block;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-faq .faq-next__v {
  display: block;
  margin-top: 7px;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
  word-break: break-word;
}

.page-faq .faq-next__note {
  margin: 18px 0 0;
  max-width: 48em;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-next__acts {
  margin-top: clamp(20px, 2.6vw, 28px);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 桌面排布 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-next__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 940px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, .8fr);
    align-items: end;
  }

  .page-faq .faq-qa__head {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 20px;
  }

  .page-faq .qa-card > summary {
    padding: 20px 22px 20px 24px;
  }

  .page-faq .qa-card__a {
    padding: 18px 24px 22px 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .tab,
  .page-faq .qa-card,
  .page-faq .qa-card__sign::before,
  .page-faq .qa-card__sign::after,
  .page-faq .faq-search__input {
    transition: none;
  }
}