.page-faq {
  --faq-rule: 1px solid var(--line);
  --faq-radius: 4px;
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 5vw, 52px) 0 clamp(24px, 4vw, 40px);
  background:
    radial-gradient(900px 420px at 88% -12%, rgba(59, 255, 158, 0.13), transparent 70%),
    radial-gradient(600px 320px at 4% 110%, rgba(142, 123, 255, 0.12), transparent 72%),
    linear-gradient(180deg, #0E1830 0%, rgba(7, 11, 20, 0) 100%);
  border-bottom: var(--faq-rule);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 28px;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(38px, 10vw, 78px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: var(--faq-rule);
}

.page-faq .faq-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 14px;
  border-left: 2px solid var(--green);
}

.page-faq .faq-fact__num {
  font-size: 26px;
  line-height: 1;
  color: var(--ink);
  letter-spacing: 0.04em;
}

.page-faq .faq-fact__label {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

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

.page-faq .media-frame__inner img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 快速定位 ---------- */
.page-faq .faq-jump {
  padding: 18px 0;
  border-bottom: var(--faq-rule);
  background: rgba(14, 24, 48, 0.6);
}

.page-faq .faq-jump__label {
  display: block;
  margin-bottom: 10px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--dim);
}

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

.page-faq .faq-jump__list .chip {
  text-decoration: none;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 28px;
  padding: clamp(32px, 5vw, 60px) 0 clamp(40px, 6vw, 72px);
}

.page-faq .faq-index {
  border: var(--faq-rule);
  border-radius: var(--faq-radius);
  background: var(--bg-2);
  padding: 16px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--dim);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  border-radius: 2px;
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 200ms var(--ease), background 200ms var(--ease), border-color 200ms var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--ink);
  background: rgba(59, 255, 158, 0.07);
  border-left-color: var(--green);
  outline: none;
}

.page-faq .faq-index__num {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--green);
}

.page-faq .faq-body {
  min-width: 0;
}

/* ---------- 问题组 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(34px, 5vw, 56px);
  scroll-margin-top: calc(var(--top-h) + 20px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: var(--faq-rule);
}

.page-faq .faq-group__num {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--green);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(22px, 4.6vw, 34px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-group__desc {
  margin: 14px 0 22px;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  margin-bottom: 10px;
  border: var(--faq-rule);
  border-radius: var(--faq-radius);
  background: var(--bg-2);
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(59, 255, 158, 0.45);
}

.page-faq .faq-item[open] {
  border-color: var(--green);
  background: linear-gradient(180deg, rgba(59, 255, 158, 0.07), rgba(14, 24, 48, 1) 62%);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  padding-left: 12px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--green);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "\2212";
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--green);
}

.page-faq .faq-item__text {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
}

.page-faq .faq-item__a {
  padding: 0 18px 18px 46px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.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 a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(37, 229, 208, 0.45);
}

.page-faq .faq-item__a a:hover {
  color: var(--green);
  border-bottom-color: var(--green);
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-open 220ms var(--ease);
}

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

/* ---------- 步骤条 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: 10px;
  margin: 0 0 26px;
}

.page-faq .faq-step {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 16px;
  border: var(--faq-rule);
  border-top: 2px solid var(--teal);
  border-radius: 2px;
  background: rgba(37, 229, 208, 0.05);
}

.page-faq .faq-step__num {
  font-size: 20px;
  line-height: 1;
  letter-spacing: 0.08em;
  color: var(--teal);
}

.page-faq .faq-step__text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .faq-figure {
  margin: 0 0 26px;
}

/* ---------- 反馈入口 ---------- */
.page-faq .faq-cta {
  margin-top: clamp(36px, 5vw, 64px);
  border-top: 2px solid var(--green);
  background:
    radial-gradient(700px 320px at 100% 0%, rgba(59, 255, 158, 0.16), transparent 70%),
    linear-gradient(135deg, rgba(14, 24, 48, 0.9), rgba(7, 11, 20, 1));
  scroll-margin-top: calc(var(--top-h) + 20px);
}

.page-faq .faq-cta__inner {
  padding: clamp(28px, 5vw, 56px) 0 clamp(32px, 5vw, 60px);
}

.page-faq .faq-cta__grid {
  display: grid;
  gap: 30px;
}

.page-faq .faq-cta__eyebrow {
  display: block;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--green);
}

.page-faq .faq-cta__title {
  margin: 12px 0 14px;
  font-size: clamp(26px, 5vw, 42px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-cta__lead {
  margin: 0 0 22px;
  max-width: 36em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-cta__contacts {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-cta__item {
  padding-left: 14px;
  border-left: 2px solid var(--orange);
}

.page-faq .faq-cta__item dt {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--dim);
}

.page-faq .faq-cta__item dd {
  margin: 6px 0 0;
  font-size: 16px;
  color: var(--ink);
  word-break: break-word;
}

.page-faq .faq-cta__item dd a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-faq .faq-cta__item dd a:hover {
  color: var(--green);
  border-bottom-color: var(--green);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__facts {
    gap: 20px 40px;
  }

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

  .page-faq .faq-item__a {
    padding-left: 60px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: end;
    gap: 48px;
  }

  .page-faq .faq-hero__figure {
    margin-bottom: 6px;
  }

  .page-faq .faq-cta__grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--top-h) + 24px);
    align-self: start;
    padding: 18px 16px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    overflow: visible;
  }

  .page-faq .faq-index__link {
    white-space: normal;
  }
}

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

  .page-faq .faq-item,
  .page-faq .faq-index__link,
  .page-faq .faq-cta__item dd a {
    transition: none;
  }
}