.page-faq {
  --faq-rail: 286px;
  display: block;
}

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 95% at 84% -20%, rgba(36, 21, 63, 0.9), transparent 62%),
    radial-gradient(95% 75% at -10% 120%, rgba(18, 48, 58, 0.95), transparent 66%),
    var(--ink);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(114deg, rgba(49, 230, 255, 0.05) 0 1px, transparent 1px 28px);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  padding-top: clamp(26px, 6vw, 58px);
  padding-bottom: clamp(24px, 5vw, 46px);
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 6vw, 3.3rem);
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-faq .faq-hero__lede {
  margin: 16px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__jump a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  background: rgba(14, 22, 34, 0.72);
  color: var(--white);
  font-size: 13px;
  line-height: 1.3;
  text-decoration: none;
  transition: border-color 0.18s ease, color 0.18s ease, background 0.18s ease;
}

.page-faq .faq-hero__jump a:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--hover);
}

.page-faq .faq-hero__jump .mono {
  color: var(--yellow);
  font-size: 12px;
}

.page-faq .faq-split,
.page-faq .faq-grid {
  padding-top: clamp(26px, 5vw, 52px);
  padding-bottom: clamp(44px, 7vw, 78px);
}

.page-faq .faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: start;
}

/* 左侧索引 */
.page-faq .faq-index {
  position: relative;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-faq .faq-index__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  height: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  background: rgba(14, 22, 34, 0.6);
  color: var(--white);
  font-size: 13px;
  line-height: 1.45;
  text-decoration: none;
  transition: border-color 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  border-color: var(--line);
  border-left-color: var(--cyan);
  background: var(--hover);
  color: var(--cyan);
}

.page-faq .faq-index__num {
  flex: 0 0 auto;
  color: var(--yellow);
  font-size: 12px;
  letter-spacing: 0.04em;
}

/* 问客服小卡 */
.page-faq .faq-help {
  margin-top: 14px;
  padding: 16px 16px 18px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--yellow);
  background: linear-gradient(158deg, rgba(36, 21, 63, 0.95), rgba(14, 22, 34, 0.96) 68%);
}

.page-faq .faq-help__label {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--yellow);
}

.page-faq .faq-help__text {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

.page-faq .faq-help__line {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--white);
  word-break: break-word;
}

.page-faq .faq-help__line .mono {
  color: var(--cyan);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.page-faq .faq-help__note {
  margin: 10px 0 14px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-help__btn {
  display: inline-block;
}

/* 问答区块 */
.page-faq .faq-block {
  margin-bottom: clamp(34px, 6vw, 60px);
  scroll-margin-top: calc(var(--header-offset) + 18px);
}

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

.page-faq .faq-block__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-block__num {
  flex: 0 0 auto;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--yellow);
}

.page-faq .faq-block__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.22rem, 3.2vw, 1.72rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-block__lede {
  margin: 0 0 18px;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

/* 手风琴 */
.page-faq .faq-q {
  margin-bottom: 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-q:hover {
  border-color: rgba(49, 230, 255, 0.4);
}

.page-faq .faq-q[open] {
  border-color: rgba(49, 230, 255, 0.5);
  background: linear-gradient(180deg, rgba(36, 21, 63, 0.55), var(--panel) 62%);
}

.page-faq .faq-q > summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

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

.page-faq .faq-q > summary:hover {
  color: var(--yellow);
}

.page-faq .faq-q__mark {
  position: relative;
  flex: 0 0 14px;
  width: 14px;
  height: 14px;
  margin-top: 4px;
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: 2px;
  background: var(--cyan);
  transform: translateY(-50%);
  transition: transform 0.2s ease, background 0.2s ease;
}

.page-faq .faq-q__mark::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-faq .faq-q[open] .faq-q__mark::before {
  background: var(--yellow);
}

.page-faq .faq-q[open] .faq-q__mark::after {
  transform: translateY(-50%) rotate(0deg);
}

.page-faq .faq-q__a {
  position: relative;
  padding: 4px 16px 18px;
  background-image: repeating-linear-gradient(0deg, rgba(49, 230, 255, 0.06) 0 1px, transparent 1px 5px);
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-q__a::before {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  top: 0;
  height: 1px;
  background: repeating-linear-gradient(90deg, rgba(49, 230, 255, 0.55) 0 6px, transparent 6px 13px);
}

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

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

.page-faq .faq-q__a strong {
  color: var(--white);
}

.page-faq .price {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--yellow);
  white-space: nowrap;
  border-bottom: 2px solid rgba(242, 255, 58, 0.5);
  padding-bottom: 1px;
}

.page-faq .faq-inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(49, 230, 255, 0.4);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-inline-link:hover {
  color: var(--yellow);
  border-bottom-color: var(--yellow);
}

/* 图片 */
.page-faq .faq-media {
  margin: 0 0 18px;
  border: 1px solid var(--line);
  background: var(--panel);
  overflow: hidden;
}

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

.page-faq .faq-media .media__cap {
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.page-faq .faq-media--square {
  max-width: 420px;
}

/* 联系方式列表 */
.page-faq .faq-reach {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .faq-reach li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-reach__v {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--white);
  word-break: break-word;
}

.page-faq .faq-reach__d {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-next {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (min-width: 640px) {
  .page-faq .faq-q > summary {
    padding: 16px 20px;
    font-size: 16px;
  }

  .page-faq .faq-q__a {
    padding: 6px 20px 20px;
    font-size: 15px;
  }

  .page-faq .faq-q__a::before {
    left: 20px;
    right: 20px;
  }

  .page-faq .faq-reach li {
    grid-template-columns: 88px minmax(0, 1fr);
    align-items: baseline;
    column-gap: 14px;
  }

  .page-faq .faq-reach__k {
    grid-row: span 2;
  }

  .page-faq .faq-reach__d {
    grid-column: 2;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-grid {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 52px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-offset) + 16px);
  }

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

  .page-faq .faq-index__list a {
    font-size: 13px;
    padding: 11px 12px;
  }

  .page-faq .faq-media--square {
    float: right;
    width: 46%;
    max-width: 340px;
    margin: 0 0 16px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q,
  .page-faq .faq-q__mark::before,
  .page-faq .faq-q__mark::after,
  .page-faq .faq-index__list a,
  .page-faq .faq-hero__jump a {
    transition: none;
  }
}
<<<END>>>