.page-faq {
  --faq-block-bg: linear-gradient(160deg, rgba(16, 46, 68, 0.92), rgba(11, 33, 54, 0.94));
  --faq-gap: clamp(1rem, 2.5vw, 1.75rem);
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

.page-faq a {
  color: inherit;
}

.page-faq .breadcrumb__link {
  color: var(--mist);
  text-decoration: none;
}

.page-faq .breadcrumb__link:hover,
.page-faq .breadcrumb__link:focus-visible {
  color: var(--mint);
}

.page-faq .breadcrumb__current {
  color: var(--mint);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(2rem, 6vw, 4.5rem) 0 clamp(2rem, 5vw, 4rem);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(122, 108, 255, 0.26), transparent 62%),
    radial-gradient(95% 75% at 4% 100%, rgba(25, 195, 125, 0.2), transparent 66%),
    linear-gradient(180deg, var(--ink), var(--ink-3));
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green), var(--mint) 40%, var(--lime) 72%, var(--violet));
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}

.page-faq .faq-hero h1 {
  margin: 0.55rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 7vw, 4.2rem);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 1rem 0 0;
  max-width: 48ch;
  font-size: clamp(0.95rem, 2.4vw, 1.06rem);
  line-height: 1.8;
  color: rgba(243, 248, 245, 0.78);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

.page-faq .faq-hero__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--r-l);
  border: 1px solid var(--line-strong);
  box-shadow: 0 34px 70px -34px rgba(0, 0, 0, 0.72);
}

.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(140deg, rgba(111, 255, 210, 0.16), transparent 52%, rgba(122, 108, 255, 0.2));
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 主体 ---------- */
.page-faq .faq-body {
  padding: clamp(2rem, 5vw, 4rem) 0 clamp(3rem, 7vw, 6rem);
  background: linear-gradient(180deg, var(--ink-3), var(--ink) 62%);
}

.page-faq .faq-body__grid {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

/* 左侧索引 */
.page-faq .faq-rail {
  padding: 1rem 1.1rem 1.2rem;
  border-radius: var(--r-m);
  border: 1px solid var(--line);
  background: rgba(7, 26, 43, 0.7);
}

.page-faq .faq-rail__label {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mint);
}

.page-faq .faq-rail__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  min-height: 44px;
  padding: 0.55rem 0.65rem;
  border-radius: var(--r-s);
  border-left: 2px solid transparent;
  font-size: 0.9rem;
  line-height: 1.45;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--cyan);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--paper);
  background: rgba(255, 255, 255, 0.05);
  border-left-color: var(--lime);
  outline: none;
}

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

.page-faq .faq-rail__graph {
  display: block;
  width: 130px;
  height: auto;
  margin: 1.1rem 0 0.6rem;
  opacity: 0.9;
}

.page-faq .faq-rail__foot {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-rail__foot a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 问答块 ---------- */
.page-faq .faq-sections {
  display: block;
}

.page-faq .faq-block {
  scroll-margin-top: 6.5rem;
  margin-bottom: var(--faq-gap);
  padding: clamp(1.1rem, 3vw, 1.9rem);
  border-radius: var(--r-l);
  border: 1px solid var(--line);
  background: var(--faq-block-bg);
  box-shadow: 0 20px 44px -30px rgba(0, 0, 0, 0.8);
}

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

.page-faq .faq-block__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.35rem 0.7rem;
  align-items: center;
  padding-bottom: 0.85rem;
  margin-bottom: 0.9rem;
  border-bottom: 1px dashed rgba(169, 188, 198, 0.24);
}

.page-faq .faq-block__code {
  grid-row: 1;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  line-height: 1;
  padding: 0.28rem 0.5rem;
  border-radius: 6px;
  color: var(--ink);
  background: var(--lime);
}

.page-faq .faq-block__title {
  grid-row: 1;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 3.4vw, 1.5rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .faq-block__note {
  grid-column: 1 / -1;
  margin: 0.15rem 0 0;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-block__note a {
  color: var(--mint);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 价格徽标 */
.page-faq .faq-prices {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(126px, 1fr));
  gap: 0.55rem;
  margin: 0 0 1rem;
}

.page-faq .faq-price {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.7rem 0.8rem;
  border-radius: var(--r-m);
  border: 1px solid var(--line);
  background: rgba(7, 26, 43, 0.66);
}

.page-faq .faq-price__num {
  font-family: var(--font-mono);
  font-size: clamp(1.1rem, 4.4vw, 1.42rem);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
  white-space: nowrap;
}

.page-faq .faq-price__num small {
  font-size: 0.66rem;
  font-weight: 500;
  color: var(--mist);
  margin-left: 0.15rem;
}

.page-faq .faq-price__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mint);
}

/* 折叠条目 */
.page-faq .faq-item {
  position: relative;
  border-bottom: 1px solid rgba(169, 188, 198, 0.14);
}

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

.page-faq .faq-item__q {
  position: relative;
  display: block;
  min-height: 44px;
  padding: 0.95rem 2.1rem 0.95rem 0;
  cursor: pointer;
  list-style: none;
  font-size: clamp(0.94rem, 2.5vw, 1rem);
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
  transition: color 0.25s var(--ease);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 0.3rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.3rem;
  line-height: 1;
  color: var(--mint);
  transition: transform 0.3s var(--ease), color 0.25s var(--ease);
}

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

.page-faq .faq-item[open] .faq-item__q::after {
  transform: translateY(-50%) rotate(45deg);
  color: var(--lime);
}

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

.page-faq .faq-item__a {
  max-width: 70ch;
  padding: 0 0 1.05rem;
  font-size: 0.92rem;
  line-height: 1.82;
  color: rgba(243, 248, 245, 0.76);
}

.page-faq .faq-item__a p {
  margin: 0 0 0.6rem;
}

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

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

/* 费用与更新时间类问题的荧光边标 */
.page-faq .faq-item--hot .faq-item__q {
  padding-left: 0.85rem;
}

.page-faq .faq-item--hot .faq-item__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7rem;
  bottom: 0.7rem;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--lime), var(--green));
}

.page-faq .faq-item--hot .faq-item__a {
  padding-left: 0.85rem;
}

/* 图文区 */
.page-faq .faq-figure {
  margin: 0 0 1rem;
  overflow: hidden;
  border-radius: var(--r-m);
  border: 1px solid var(--line-strong);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta {
  padding: clamp(2.4rem, 6vw, 4.5rem) 0;
  border-top: 1px solid var(--line);
  background:
    radial-gradient(120% 120% at 12% 0%, rgba(215, 255, 63, 0.18), transparent 56%),
    linear-gradient(120deg, var(--ink-3), var(--ink-2) 58%, var(--ink-3));
}

.page-faq .faq-cta__inner {
  display: grid;
  gap: 1.4rem;
}

.page-faq .faq-cta h2 {
  margin: 0.4rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4.6vw, 2.3rem);
  font-weight: 800;
  line-height: 1.24;
  color: var(--paper);
}

.page-faq .faq-cta p {
  margin: 0.7rem 0 0;
  max-width: 62ch;
  font-size: 0.94rem;
  line-height: 1.82;
  color: rgba(243, 248, 245, 0.76);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-items: flex-start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 2rem;
  }

  .page-faq .faq-cta__actions {
    flex-direction: column;
    flex-wrap: nowrap;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body__grid {
    grid-template-columns: var(--rail) minmax(0, 1fr);
    gap: clamp(1.75rem, 3vw, 2.75rem);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 6.5rem;
  }

  .page-faq .faq-block {
    padding: clamp(1.4rem, 2.4vw, 2rem);
  }

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

@media (max-width: 420px) {
  .page-faq .faq-rail__link {
    font-size: 0.85rem;
  }

  .page-faq .faq-hero__actions .btn,
  .page-faq .faq-cta__actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}