.page-faq {
  --faq-line: rgba(23, 162, 255, .22);
  --faq-line-soft: rgba(23, 162, 255, .12);
  --faq-card: rgba(27, 36, 54, .55);
  --faq-card-open: rgba(23, 162, 255, .08);
  padding-bottom: 64px;
}

.page-faq .breadcrumb {
  margin-top: 8px;
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  margin-top: 18px;
}

.page-faq .faq-hero__box {
  position: relative;
  overflow: hidden;
  padding: 26px 20px 22px;
  border: 1px solid var(--hairline);
  border-radius: 4px;
  background:
    repeating-linear-gradient(90deg, rgba(23, 162, 255, .06) 0 1px, transparent 1px 88px),
    linear-gradient(158deg, rgba(15, 21, 34, .98), rgba(7, 9, 15, .99));
}

.page-faq .faq-hero__box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 148px;
  height: 2px;
  background: linear-gradient(90deg, var(--blue), transparent);
}

.page-faq .faq-hero__box::after {
  content: "";
  position: absolute;
  right: -34px;
  bottom: -34px;
  width: 96px;
  height: 96px;
  border: 1px solid var(--faq-line);
  transform: rotate(-6deg);
}

.page-faq .faq-hero__tag {
  margin: 0 0 14px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--blue);
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 18em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 7.4vw, 52px);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.72;
  color: var(--haze);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  margin: 24px 0 0;
  padding: 16px 0 0;
  list-style: none;
  border-top: 1px solid var(--faq-line-soft);
  font-size: 13px;
  color: var(--haze);
}

.page-faq .faq-hero__stats b {
  font-family: var(--font-data);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--lime);
  margin-right: 4px;
}

/* ---------- 主栅格 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: 28px;
  margin-top: 34px;
}

/* ---------- 阶段目录 ---------- */
.page-faq .faq-rail {
  padding: 16px 14px;
  border: 1px solid var(--hairline);
  border-radius: 4px;
  background: var(--glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.page-faq .faq-rail__label {
  margin: 0 0 10px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--haze);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-rail__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail__list li {
  flex: 0 0 auto;
}

.page-faq .faq-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 7px;
  padding: 7px 12px;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--paper);
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--blue);
  border-color: var(--blue);
  background: var(--blue-soft);
}

.page-faq .faq-rail__no {
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: .06em;
  color: var(--blue);
}

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

/* ---------- 问答分组 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 44px;
}

.page-faq .faq-group {
  scroll-margin-top: 22px;
}

.page-faq .faq-group__head {
  position: relative;
  padding-left: 14px;
  border-left: 2px solid var(--blue);
}

.page-faq .faq-group__no {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--orange);
}

.page-faq .faq-group h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(21px, 5.2vw, 30px);
  line-height: 1.34;
  color: var(--paper);
}

.page-faq .faq-group__head p {
  margin: 10px 0 0;
  max-width: 42em;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--haze);
}

/* ---------- 三步刻度条 ---------- */
.page-faq .faq-track {
  display: grid;
  gap: 14px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-track li {
  position: relative;
  padding: 18px 14px 16px;
  border-top: 2px solid var(--steel);
  border-radius: 0 0 4px 4px;
  background: linear-gradient(180deg, rgba(23, 162, 255, .05), transparent 70%);
}

.page-faq .faq-track li::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 44px;
  height: 2px;
  background: var(--blue);
}

.page-faq .faq-track__no {
  display: block;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--lime);
}

.page-faq .faq-track h3 {
  margin: 6px 0 0;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 16px;
  color: var(--paper);
}

.page-faq .faq-track p {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.66;
  color: var(--haze);
}

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

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--hairline);
  border-radius: 4px;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--haze);
  font-family: var(--font-data);
  letter-spacing: .02em;
}

.page-faq .faq-figure--wide {
  margin-top: 22px;
}

/* ---------- 问答卡 ---------- */
.page-faq .qa-list {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}

.page-faq .qa {
  border: 1px solid var(--faq-line);
  border-radius: 4px;
  background: var(--faq-card);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .qa:hover {
  border-color: rgba(23, 162, 255, .45);
}

.page-faq .qa[open] {
  border-color: var(--blue);
  background: var(--faq-card-open);
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 15px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
}

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

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.page-faq .qa__no {
  flex: 0 0 auto;
  padding-top: 2px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--blue);
}

.page-faq .qa__q {
  flex: 1 1 auto;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
}

.page-faq .qa__mark {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border: 1px solid var(--faq-line);
  border-radius: 3px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--blue);
  transform: translate(-50%, -50%);
}

.page-faq .qa__mark::before {
  width: 8px;
  height: 1px;
}

.page-faq .qa__mark::after {
  width: 1px;
  height: 8px;
  transition: opacity .18s var(--ease);
}

.page-faq .qa[open] .qa__mark::after {
  opacity: 0;
}

.page-faq .qa[open] .qa__mark {
  border-color: var(--blue);
}

.page-faq .qa__a {
  padding: 0 15px 18px 41px;
  font-size: 14px;
  line-height: 1.74;
  color: rgba(244, 235, 223, .82);
}

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

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

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

/* ---------- 步骤清单 ---------- */
.page-faq .qa-steps {
  counter-reset: faqstep;
  margin: 12px 0 0;
  padding: 0 0 0 16px;
  list-style: none;
  border-left: 1px solid var(--blue-line);
}

.page-faq .qa-steps li {
  position: relative;
  counter-increment: faqstep;
  padding: 0 0 12px 26px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(244, 235, 223, .78);
}

.page-faq .qa-steps li:last-child {
  padding-bottom: 0;
}

.page-faq .qa-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: -11px;
  top: 2px;
  padding: 1px 4px;
  border-radius: 2px;
  background: var(--blue);
  color: var(--ink);
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: .04em;
}

/* ---------- 人工协助 ---------- */
.page-faq .faq-group--support {
  padding: 24px 18px 22px;
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink-text);
}

.page-faq .faq-group--support .faq-group__head {
  border-left-color: var(--orange);
}

.page-faq .faq-group--support .faq-group__no {
  color: var(--orange);
}

.page-faq .faq-group--support h2 {
  color: var(--ink-text);
}

.page-faq .faq-group--support .faq-group__head p {
  color: var(--slate);
}

.page-faq .faq-support__list {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-support__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--paper-line);
}

.page-faq .faq-support__list .contact-label {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--slate);
}

.page-faq .faq-support__list .contact-value {
  flex: 1 1 auto;
  font-family: var(--font-data);
  font-size: 14px;
  color: var(--ink-text);
  word-break: break-all;
}

.page-faq .faq-support__list .copy-btn {
  flex: 0 0 auto;
  padding: 4px 10px;
  border: 1px solid rgba(255, 106, 43, .55);
  border-radius: 3px;
  background: transparent;
  color: var(--orange);
  font-family: var(--font-body);
  font-size: 12px;
  cursor: pointer;
}

.page-faq .faq-support__list .copy-btn:hover {
  background: rgba(255, 106, 43, .12);
}

.page-faq .faq-support__note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--slate);
}

.page-faq .faq-support__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__box {
    padding: 38px 34px 30px;
  }

  .page-faq .faq-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }

  .page-faq .faq-track li {
    padding: 20px 18px 18px;
    border-radius: 0;
  }

  .page-faq .faq-track li + li {
    border-left: 1px solid var(--faq-line-soft);
  }

  .page-faq .qa summary {
    padding: 16px 18px;
  }

  .page-faq .qa__a {
    padding: 0 18px 20px 46px;
  }

  .page-faq .faq-support__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 28px;
  }

  .page-faq .faq-group--support {
    padding: 32px 28px 28px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__lead {
    font-size: 16px;
  }

  .page-faq .faq-shell {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 24px;
    padding: 20px 16px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-rail__list a {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    padding: 8px 8px 8px 10px;
    font-size: 14px;
    white-space: normal;
  }

  .page-faq .faq-rail__list a:hover,
  .page-faq .faq-rail__list a:focus-visible {
    border-left-color: var(--blue);
    background: var(--blue-soft);
  }

  .page-faq .faq-rail__call {
    display: block;
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px solid var(--faq-line-soft);
    font-size: 12.5px;
    line-height: 1.6;
    color: var(--haze);
    text-decoration: none;
  }

  .page-faq .faq-rail__call:hover {
    color: var(--orange);
  }

  .page-faq .faq-body {
    gap: 56px;
  }

  .page-faq .faq-figure {
    margin-top: 30px;
  }

  .page-faq .qa__q {
    font-size: 15.5px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero__box {
    padding: 48px 42px 36px;
  }

  .page-faq .faq-shell {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 64px;
  }

  .page-faq .faq-group__head {
    padding-left: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__mark::after,
  .page-faq .faq-rail__list a {
    transition: none;
  }
}
<<<END>>>