.page-faq {
  --faq-line: rgba(168, 176, 184, 0.26);
  --faq-line-strong: rgba(168, 176, 184, 0.46);
  --faq-surface: #1c2126;
  --faq-red-deep: #8f1c31;
  background: var(--ink-900);
  color: var(--cream-100);
  font-family: var(--font-sans);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: 34px 0 52px;
  background:
    radial-gradient(95% 75% at 94% -14%, rgba(27, 58, 107, 0.95), rgba(18, 20, 23, 0) 62%),
    var(--ink-900);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -170px;
  right: -130px;
  width: min(560px, 80vw);
  height: 430px;
  border-radius: var(--radius-l);
  background: linear-gradient(140deg, rgba(215, 38, 61, 0.48), rgba(45, 226, 197, 0.14));
  transform: rotate(-14deg);
  opacity: 0.55;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red-600) 0 36%, var(--cyan-400) 36% 60%, var(--blue-700) 60% 100%);
}

.page-faq .faq-hero__title {
  margin: 14px 0 18px;
  max-width: 18ch;
  font-size: clamp(31px, 6.2vw, 64px);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.012em;
  color: var(--white);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--fog-400);
}

@media (min-width: 768px) {
  .page-faq .faq-hero__lead {
    font-size: 16px;
  }
}

/* ---------- 分类卡 ---------- */
.page-faq .faq-cards {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

@media (min-width: 600px) {
  .page-faq .faq-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-cards {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-faq .faq-card {
  display: grid;
  gap: 8px;
  height: 100%;
  padding: 18px 16px 16px;
  background: var(--faq-surface);
  border: 1px solid var(--faq-line);
  border-top: 2px solid var(--faq-line-strong);
  border-radius: var(--radius-m);
  text-decoration: none;
  color: inherit;
  transition: transform 0.26s var(--ease), border-color 0.26s var(--ease), background-color 0.26s var(--ease);
}

.page-faq .faq-cards li:nth-child(1) .faq-card { border-top-color: var(--cyan-400); }
.page-faq .faq-cards li:nth-child(2) .faq-card { border-top-color: var(--red-600); }
.page-faq .faq-cards li:nth-child(3) .faq-card { border-top-color: var(--blue-700); }
.page-faq .faq-cards li:nth-child(4) .faq-card { border-top-color: var(--terra-500); }

.page-faq .faq-card:hover,
.page-faq .faq-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--cyan-400);
  background: var(--ink-700);
}

.page-faq .faq-card__num {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan-400);
}

.page-faq .faq-card__title {
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
  line-height: 1.35;
}

.page-faq .faq-card__desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--fog-400);
}

.page-faq .faq-card__meta {
  margin-top: 4px;
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--cyan-400);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  padding-top: 46px;
  padding-bottom: 74px;
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: 214px minmax(0, 1fr);
    gap: 54px;
    padding-top: 62px;
    padding-bottom: 96px;
  }
}

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

/* ---------- 左侧索引轨 ---------- */
.page-faq .faq-rail {
  display: none;
}

@media (min-width: 1000px) {
  .page-faq .faq-rail {
    display: block;
  }

  .page-faq .faq-rail__inner {
    position: sticky;
    top: 28px;
    padding: 16px 0 16px 14px;
    border-left: 2px solid var(--blue-700);
  }
}

.page-faq .faq-rail__title {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--fog-400);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 0;
  font-size: 13.5px;
  line-height: 1.45;
  color: var(--fog-400);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-faq .faq-rail__dot {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(168, 176, 184, 0.5);
  transition: background-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

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

.page-faq .faq-rail__link:hover .faq-rail__dot,
.page-faq .faq-rail__link:focus-visible .faq-rail__dot {
  background: var(--cyan-400);
  box-shadow: 0 0 0 4px rgba(45, 226, 197, 0.16);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-bottom: 58px;
  scroll-margin-top: 84px;
}

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

@media (min-width: 1000px) {
  .page-faq .faq-group {
    margin-bottom: 76px;
    scroll-margin-top: 40px;
  }
}

.page-faq .faq-group__head {
  position: relative;
  margin-bottom: 26px;
  padding-left: 18px;
  border-left: 2px solid var(--blue-700);
  transition: border-color 0.24s var(--ease);
}

.page-faq .faq-group:target .faq-group__head {
  border-left-color: var(--cyan-400);
}

.page-faq .faq-group__num {
  display: block;
  margin-bottom: 6px;
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--cyan-400);
}

.page-faq .faq-group__title {
  margin: 0 0 10px;
  font-size: clamp(23px, 3.4vw, 32px);
  line-height: 1.2;
  font-weight: 800;
  color: var(--white);
}

.page-faq .faq-group__lead {
  margin: 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--fog-400);
}

/* ---------- 伤停分栏 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

@media (min-width: 1040px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) 288px;
    gap: 38px;
    align-items: start;
  }
}

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

/* ---------- 五步条 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

@media (min-width: 640px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1240px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .faq-step {
  padding: 15px 14px 13px;
  background: var(--faq-surface);
  border: 1px solid var(--faq-line);
  border-top: 2px solid rgba(45, 226, 197, 0.5);
  border-radius: var(--radius-s);
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-faq .faq-step:hover,
.page-faq .faq-step:focus-within {
  transform: translateY(-3px);
  border-color: rgba(45, 226, 197, 0.6);
}

.page-faq .faq-step__num {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  margin-bottom: 9px;
  border: 1px solid rgba(45, 226, 197, 0.65);
  border-radius: 50%;
  font-size: 11.5px;
  color: var(--cyan-400);
}

.page-faq .faq-step__label {
  margin: 0 0 6px;
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--white);
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 12.8px;
  line-height: 1.7;
  color: var(--fog-400);
}

.page-faq .faq-step__hint {
  margin: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 12px;
  line-height: 1.65;
  color: var(--terra-500);
  transition: max-height 0.3s var(--ease), opacity 0.3s var(--ease), margin-top 0.3s var(--ease);
}

.page-faq .faq-step:hover .faq-step__hint,
.page-faq .faq-step:focus-within .faq-step__hint {
  max-height: 140px;
  margin-top: 8px;
  opacity: 1;
}

@media (max-width: 639px) {
  .page-faq .faq-step__hint {
    max-height: none;
    margin-top: 8px;
    opacity: 1;
    overflow: visible;
  }
}

/* ---------- 问答 ---------- */
.page-faq .qa-list {
  margin: 0;
  border-top: 1px solid var(--faq-line);
}

.page-faq .qa {
  border-left: 2px solid transparent;
  border-bottom: 1px solid var(--faq-line);
  padding-left: 14px;
  transition: border-color 0.22s var(--ease), background-color 0.22s var(--ease);
}

.page-faq .qa[open] {
  border-left-color: var(--cyan-400);
  background: linear-gradient(90deg, rgba(45, 226, 197, 0.07), rgba(45, 226, 197, 0));
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 17px 0 15px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--white);
  transition: color 0.2s var(--ease);
}

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

.page-faq .qa__q:hover {
  color: var(--cyan-400);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 3px;
}

.page-faq .qa__icon {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  margin-top: 1px;
  border: 1px solid var(--faq-line-strong);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
  color: var(--cyan-400);
  transition: transform 0.26s var(--ease), border-color 0.26s var(--ease);
}

.page-faq .qa[open] .qa__icon {
  transform: rotate(45deg);
  border-color: var(--cyan-400);
}

.page-faq .qa__a {
  max-width: 64ch;
  padding: 0 0 18px;
  font-size: 14px;
  line-height: 1.82;
  color: var(--fog-400);
}

.page-faq .qa__a a,
.page-faq .faq-note a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.page-faq .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-m);
}

.page-faq .faq-wide {
  margin: 24px 0 28px;
}

/* ---------- 人工行动条 ---------- */
.page-faq .faq-help {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  padding: 26px 22px;
  border-radius: var(--radius-l);
  background: linear-gradient(122deg, var(--red-600), var(--faq-red-deep));
  color: var(--white);
}

@media (min-width: 820px) {
  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: center;
    gap: 34px;
    padding: 34px 32px;
  }
}

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

.page-faq .faq-help__title {
  margin: 0 0 10px;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.35;
  font-weight: 800;
  color: var(--white);
}

.page-faq .faq-help__text {
  margin: 0 0 18px;
  max-width: 52ch;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.86);
}

.page-faq .faq-help__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 24px;
  border-radius: 999px;
  background: var(--white);
  color: var(--faq-red-deep);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-faq .faq-help__btn:hover,
.page-faq .faq-help__btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.28);
}

.page-faq .faq-help__label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.72);
}

.page-faq .faq-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-checklist li {
  position: relative;
  padding-left: 19px;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
}

.page-faq .faq-checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan-400);
}

.page-faq .faq-note {
  margin: 20px 0 0;
  max-width: 68ch;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--fog-400);
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-card,
  .page-faq .faq-step,
  .page-faq .qa__icon,
  .page-faq .faq-help__btn {
    transition: none;
  }

  .page-faq .faq-card:hover,
  .page-faq .faq-step:hover,
  .page-faq .faq-help__btn:hover {
    transform: none;
  }
}
<<<END>>>