.page-faq {
  --faq-aside: 208px;
  --faq-main-max: 780px;
  --faq-hair: rgba(147, 164, 195, 0.16);
  --faq-hair-strong: rgba(147, 164, 195, 0.3);
  position: relative;
  padding-bottom: clamp(40px, 8vh, 96px);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 3vw, 40px) 0 clamp(30px, 5vw, 60px);
  overflow: hidden;
}

.page-faq .faq-hero__glow {
  position: absolute;
  inset: -20% -10% auto -30%;
  height: 78%;
  pointer-events: none;
  background:
    radial-gradient(58% 74% at 22% 18%, rgba(91, 141, 245, 0.16) 0%, transparent 68%),
    radial-gradient(42% 58% at 78% 6%, rgba(244, 169, 58, 0.13) 0%, transparent 72%);
  filter: blur(6px);
  z-index: 0;
}

.page-faq .faq-hero > .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  align-items: end;
  row-gap: 28px;
  margin-top: clamp(18px, 3vw, 32px);
}

.page-faq .faq-hero__copy {
  max-width: 660px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 4.6vw, 3.35rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--cloud);
  margin: 14px 0 18px;
}

.page-faq .faq-hero .lede {
  max-width: 46ch;
}

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

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lift);
}

/* ---------- 快速跳转 ---------- */

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: clamp(26px, 4vw, 42px);
  padding-top: 20px;
  border-top: 1px solid var(--faq-hair);
}

/* ---------- 章节画板 ---------- */

.page-faq .faq-block {
  position: relative;
  padding: clamp(38px, 6vw, 76px) 0;
}

.page-faq .faq-block + .faq-block::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--faq-hair-strong) 16%, var(--faq-hair-strong) 84%, transparent);
  transform: rotate(-0.6deg);
  transform-origin: left center;
}

.page-faq .faq-block__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-faq .faq-block__main {
  max-width: var(--faq-main-max);
  min-width: 0;
}

.page-faq .faq-block__head {
  margin-bottom: clamp(20px, 2.6vw, 30px);
}

.page-faq .faq-block__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 12px;
  font-family: var(--font-body);
  font-size: var(--step-6);
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--dawn);
}

.page-faq .faq-block__eyebrow svg {
  width: 15px;
  height: 15px;
  flex: none;
}

.page-faq .faq-block h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 2.9vw, 2.05rem);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--cloud);
  margin: 0;
}

/* ---------- 右侧旁注编号 ---------- */

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

.page-faq .faq-block__num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(56px, 6.4vw, 96px);
  font-weight: 500;
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: rgba(147, 164, 195, 0.2);
}

.page-faq .faq-block__label {
  display: block;
  margin-top: 14px;
  font-size: var(--step-6);
  letter-spacing: 0.14em;
  color: var(--mist);
}

/* ---------- 图片区 ---------- */

.page-faq .faq-figure {
  margin: 0 0 clamp(22px, 3vw, 32px);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  background: linear-gradient(150deg, var(--ink-900), var(--ink-950));
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: var(--step-6);
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--mist);
}

/* ---------- 问答组 ---------- */

.page-faq .faq-list {
  display: block;
}

.page-faq .faq-item {
  position: relative;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-item:last-child {
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-item__q {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 18px 6px 18px 16px;
  cursor: pointer;
  list-style: none;
  transition: background-color 220ms var(--ease);
}

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

.page-faq .faq-item__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  bottom: 13px;
  width: 2px;
  background: var(--dawn);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 280ms var(--ease);
}

.page-faq .faq-item__q::before,
.page-faq .faq-item[open] > .faq-item__q::before {
  border-radius: 1px;
}

.page-faq .faq-item__q:hover {
  background: rgba(24, 39, 71, 0.42);
}

.page-faq .faq-item[open] > .faq-item__q::before {
  transform: scaleY(1);
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--step-6);
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--mist);
  padding-top: 3px;
}

.page-faq .faq-item[open] > .faq-item__q .faq-item__num {
  color: var(--dawn);
}

.page-faq .faq-item__text {
  font-size: var(--step-4);
  font-weight: 500;
  line-height: 1.55;
  color: var(--cloud);
}

.page-faq .faq-item__sign {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--mist);
  transition: transform 280ms var(--ease), background-color 220ms var(--ease);
}

.page-faq .faq-item__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1.5px;
}

.page-faq .faq-item__sign::after {
  left: 6px;
  top: 0;
  width: 1.5px;
  height: 14px;
}

.page-faq .faq-item[open] > .faq-item__q .faq-item__sign::after {
  transform: scaleY(0);
}

.page-faq .faq-item[open] > .faq-item__q .faq-item__sign::before {
  background: var(--dawn);
}

.page-faq .faq-item__a {
  padding: 0 12px 22px 40px;
  font-size: var(--step-5);
  line-height: 1.85;
  color: var(--mist);
  max-width: 62ch;
  animation: faqAnswerIn 260ms var(--ease) both;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__a strong {
  color: var(--cloud-soft);
  font-weight: 600;
}

.page-faq .faq-item__a ul {
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-item__a li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 6px;
}

.page-faq .faq-item__a li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 9px;
  height: 1px;
  background: var(--dawn);
}

.page-faq .faq-item__a a {
  color: var(--data);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-item__a a:hover {
  color: var(--cloud);
}

.page-faq .faq-item__a .u-mono {
  color: var(--cloud-soft);
  font-size: 0.94em;
}

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

/* ---------- 收尾行动区 ---------- */

.page-faq .faq-cta {
  padding: clamp(34px, 5vw, 64px) 0 0;
}

.page-faq .faq-cta__box {
  position: relative;
  display: grid;
  gap: 22px;
  padding: clamp(24px, 3.4vw, 40px);
  border: 1px solid var(--faq-hair-strong);
  border-radius: var(--radius);
  background:
    linear-gradient(122deg, rgba(24, 39, 71, 0.72) 0%, rgba(12, 21, 48, 0.9) 62%),
    linear-gradient(200deg, rgba(244, 169, 58, 0.12), transparent 58%);
  box-shadow: var(--glow), var(--shadow-lift);
  overflow: hidden;
}

.page-faq .faq-cta__box::after {
  content: "";
  position: absolute;
  top: -60%;
  right: -12%;
  width: 46%;
  height: 220%;
  background: linear-gradient(198deg, rgba(244, 169, 58, 0.16), transparent 62%);
  transform: rotate(-8deg);
  pointer-events: none;
}

.page-faq .faq-cta__copy {
  position: relative;
  z-index: 1;
  max-width: 52ch;
}

.page-faq .faq-cta h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 2.6vw, 1.85rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--cloud);
  margin: 0 0 10px;
}

.page-faq .faq-cta p {
  margin: 0;
  font-size: var(--step-5);
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-cta__actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-hero__figure img {
    aspect-ratio: 21 / 9;
  }

  .page-faq .faq-item__q {
    padding: 20px 6px 20px 18px;
  }

  .page-faq .faq-item__a {
    padding-left: 48px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    align-items: center;
    row-gap: 0;
  }

  .page-faq .faq-block__grid {
    grid-template-columns: minmax(0, 1fr) var(--faq-aside);
    gap: clamp(34px, 5vw, 76px);
    align-items: start;
  }

  .page-faq .faq-block__aside {
    display: block;
    position: sticky;
    top: calc(var(--frame-top) + 34px);
    align-self: start;
    text-align: right;
  }

  .page-faq .faq-cta__box {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
  }

  .page-faq .faq-cta__actions {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero__copy {
    padding-right: 24px;
  }
}

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

  .page-faq .faq-item__q,
  .page-faq .faq-item__q::before,
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after {
    transition: none;
  }
}