.page-faq {
  --faq-hair: rgba(201, 211, 221, 0.2);
  --faq-rule: rgba(11, 29, 51, 0.12);
  background: var(--mist);
  color: var(--ink);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 36px) 0 0;
  color: var(--mist);
  background:
    radial-gradient(760px 420px at 84% -12%, rgba(79, 209, 197, 0.18), transparent 62%),
    radial-gradient(720px 540px at 2% 108%, rgba(31, 78, 121, 0.72), transparent 66%),
    linear-gradient(165deg, #0B1D33 0%, #112A46 56%, #0B1D33 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(114deg, rgba(201, 211, 221, 0.055) 0 1px, transparent 1px 26px);
  pointer-events: none;
}

.page-faq .faq-hero .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-crumbs {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-faq .faq-crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 0 0 30px;
  padding: 0;
  color: rgba(201, 211, 221, 0.68);
}

.page-faq .faq-crumbs a {
  color: var(--silver);
  text-decoration: none;
}

.page-faq .faq-crumbs a:hover,
.page-faq .faq-crumbs a:focus-visible {
  color: var(--electric);
}

.page-faq .faq-crumbs li[aria-current="page"] {
  color: var(--electric);
}

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

.page-faq .faq-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--electric);
}

.page-faq .faq-eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
}

.page-faq .faq-eyebrow--dark {
  color: var(--indigo);
}

.page-faq .faq-title {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(30px, 7.2vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 48ch;
  font-size: clamp(15px, 2.2vw, 17px);
  line-height: 1.8;
  color: rgba(201, 211, 221, 0.86);
}

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

.page-faq .faq-hero__figure .figure__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--faq-hair);
}

.page-faq .faq-hero__figure .figure__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: rgba(201, 211, 221, 0.6);
}

.page-faq .faq-steps__head {
  margin: 42px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(201, 211, 221, 0.58);
}

.page-faq .faq-steps {
  display: grid;
  gap: 0;
  margin-top: 14px;
  border-top: 1px solid var(--faq-hair);
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-step {
  padding: 22px 0 24px;
  border-bottom: 1px solid var(--faq-hair);
}

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

.page-faq .faq-step__num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--electric);
}

.page-faq .faq-step__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: var(--mist);
}

.page-faq .faq-step__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(201, 211, 221, 0.72);
}

/* ---------- 通用区块 ---------- */
.page-faq .faq-band {
  padding: clamp(54px, 8vw, 100px) 0;
}

.page-faq .faq-band--paper {
  background: var(--mist);
  color: var(--ink);
}

.page-faq .faq-band--silver {
  background: var(--silver-2);
  color: var(--ink);
}

.page-faq .faq-band--deep {
  color: var(--mist);
  background:
    radial-gradient(620px 340px at 92% 6%, rgba(47, 125, 109, 0.26), transparent 64%),
    linear-gradient(170deg, #0B1D33 0%, #112A46 100%);
}

.page-faq .faq-h2 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(24px, 4.6vw, 36px);
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: inherit;
}

.page-faq .faq-p {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.85;
}

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

.page-faq .faq-p--wide {
  max-width: 60ch;
}

.page-faq .faq-inline {
  color: var(--indigo);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

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

.page-faq .faq-tip {
  margin: 20px 0 0;
  padding: 14px 18px;
  border-left: 2px solid var(--terra);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(47, 125, 109, 0.09);
  font-size: 13.5px;
  line-height: 1.75;
}

/* ---------- 操作路径 ---------- */
.page-faq .faq-split {
  display: grid;
  gap: 34px;
}

.page-faq .faq-path {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-path__item {
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-path__item:last-child {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-step-d > summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 20px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: clamp(16px, 2.5vw, 19px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

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

.page-faq .faq-step-d > summary:focus-visible {
  outline: 2px solid var(--indigo);
  outline-offset: 4px;
}

.page-faq .faq-step-d__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--cinnabar);
  padding-top: 3px;
}

.page-faq .faq-step-d__label {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-step-d__mark {
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  margin-left: auto;
  border: 1px solid rgba(11, 29, 51, 0.26);
  border-radius: 50%;
  color: var(--indigo);
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

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

.page-faq .faq-step-d__mark::before {
  width: 9px;
  height: 1px;
}

.page-faq .faq-step-d__mark::after {
  width: 1px;
  height: 9px;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.page-faq .faq-step-d[open] .faq-step-d__mark {
  border-color: var(--terra);
  color: var(--terra);
  background: rgba(47, 125, 109, 0.1);
}

.page-faq .faq-step-d[open] .faq-step-d__mark::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-step-d__body {
  padding: 0 0 22px;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(11, 29, 51, 0.78);
}

.page-faq .faq-step-d__body p {
  margin: 0;
}

/* ---------- 问答区 ---------- */
.page-faq .faq-head-block {
  margin-bottom: 32px;
}

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

.page-faq .faq-index {
  padding: 22px 20px;
  border-radius: var(--radius);
  background: linear-gradient(155deg, var(--ink) 0%, var(--ink-2) 100%);
  color: var(--mist);
}

.page-faq .faq-index__head {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--electric);
}

.page-faq .faq-index__group {
  margin-bottom: 18px;
}

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

.page-faq .faq-index__gtitle {
  margin: 0 0 8px;
  font-size: 12.5px;
  font-weight: 600;
  color: rgba(201, 211, 221, 0.6);
}

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

.page-faq .faq-index a {
  display: block;
  padding: 7px 10px;
  border-left: 2px solid transparent;
  border-radius: 2px;
  font-size: 13px;
  line-height: 1.55;
  color: rgba(244, 247, 250, 0.82);
  text-decoration: none;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  background: rgba(79, 209, 197, 0.12);
  border-left-color: var(--electric);
  color: var(--mist);
}

.page-faq .faq-group {
  margin-bottom: 36px;
}

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

.page-faq .faq-h3 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-size: clamp(18px, 3vw, 22px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-h3::before {
  content: "";
  display: inline-block;
  width: 18px;
  height: 2px;
  margin-right: 10px;
  vertical-align: middle;
  background: var(--terra);
}

.page-faq .faq-q {
  margin-bottom: 10px;
  border: 1px solid rgba(11, 29, 51, 0.1);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 1px 2px rgba(11, 29, 51, 0.04);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .faq-q[open] {
  border-color: rgba(31, 78, 121, 0.34);
  box-shadow: 0 6px 20px rgba(11, 29, 51, 0.07);
}

.page-faq .faq-q > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
}

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

.page-faq .faq-q > summary:focus-visible {
  outline: 2px solid var(--indigo);
  outline-offset: -2px;
}

.page-faq .faq-q__mark {
  flex: none;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--indigo);
}

.page-faq .faq-q:not([open]) .faq-q__mark::after {
  content: "+";
}

.page-faq .faq-q[open] .faq-q__mark::after {
  content: "−";
}

.page-faq .faq-q__body {
  padding: 0 18px 18px;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(11, 29, 51, 0.76);
}

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

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

.page-faq .faq-figure--sync {
  margin: 22px 0 0;
}

.page-faq .faq-figure--sync .figure__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid rgba(11, 29, 51, 0.1);
}

.page-faq .faq-figure--sync .figure__caption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(11, 29, 51, 0.55);
}

/* ---------- 联系区 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 32px;
}

.page-faq .faq-contact__card {
  padding: 26px 22px;
  border: 1px solid rgba(201, 211, 221, 0.24);
  border-radius: var(--radius);
  background: rgba(244, 247, 250, 0.045);
}

.page-faq .faq-contact__k {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--electric);
}

.page-faq .faq-contact__v {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 247, 250, 0.9);
  word-break: break-word;
}

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

.page-faq .faq-contact__mail {
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.7vw, 19px);
  letter-spacing: 0.01em;
  color: var(--electric);
}

.page-faq .faq-checklist {
  display: grid;
  gap: 10px;
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.page-faq .faq-checklist li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(201, 211, 221, 0.86);
}

.page-faq .faq-checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 1px;
  background: var(--electric);
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 26px;
}

.page-faq .faq-link {
  color: var(--silver);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 211, 221, 0.4);
  padding-bottom: 2px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  color: var(--electric);
  border-bottom-color: var(--electric);
}

.page-faq .faq-totop {
  margin: 44px 0 0;
  padding-top: 20px;
  border-top: 1px solid rgba(201, 211, 221, 0.18);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-align: right;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-step {
    padding: 24px 22px 26px;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-step {
    border-bottom: 0;
    border-left: 1px solid var(--faq-hair);
  }

  .page-faq .faq-step:first-child {
    border-left: 0;
    padding-left: 0;
  }

  .page-faq .faq-step:last-child {
    padding-right: 0;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__top {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: center;
    gap: 56px;
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    gap: 64px;
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 0.36fr) minmax(0, 0.64fr);
    gap: 72px;
    align-items: start;
  }

  .page-faq .faq-split__aside {
    position: sticky;
    top: calc(var(--header-h) + 32px);
  }

  .page-faq .faq-answers {
    grid-template-columns: minmax(0, 268px) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}
<<<END>>>