.page-faq {
  --faq-line: rgba(244, 241, 234, 0.14);
  --faq-line-dark: rgba(6, 17, 15, 0.16);
  --faq-teal: #0B7A69;
  --faq-card: rgba(14, 42, 36, 0.55);
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--bar-h) + var(--rail-h) + clamp(32px, 7vw, 72px)) 0 clamp(40px, 6vw, 76px);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(53, 242, 214, 0.18), transparent 62%),
    radial-gradient(80% 60% at 0% 100%, rgba(255, 106, 43, 0.12), transparent 70%),
    linear-gradient(180deg, var(--ink-900) 0%, var(--ink-800) 100%);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(244, 241, 234, 0.05) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(244, 241, 234, 0.04) 0 1px, transparent 1px 96px);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(28px, 5vw, 52px);
  align-items: end;
}

.page-faq .sb-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gray-500);
  margin-bottom: 26px;
}

.page-faq .sb-breadcrumb a {
  color: var(--gray-500);
  text-decoration: none;
}

.page-faq .sb-breadcrumb a:hover,
.page-faq .sb-breadcrumb a:focus-visible {
  color: var(--cyan-400);
}

.page-faq .sb-breadcrumb [aria-current="page"] {
  color: var(--paper);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6.6vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 14em;
}

.page-faq .faq-hero__lead {
  margin: 22px 0 0;
  max-width: 33em;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(244, 241, 234, 0.82);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.03em;
  color: var(--gray-500);
}

.page-faq .faq-hero__meta li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-faq .faq-hero__meta li::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--cyan-400);
}

.page-faq .faq-hero__meta .sb-num {
  color: var(--cyan-300);
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--faq-line);
  background: var(--ink-700);
  clip-path: polygon(0 5%, 100% 0, 100% 95%, 0 100%);
  overflow: hidden;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 9 / 7;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.06);
}

.page-faq .faq-hero__figcap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 14px;
  background: rgba(6, 17, 15, 0.82);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--cyan-300);
}

/* ---------- 索引 + 问答 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(32px, 5vw, 56px);
  padding-top: clamp(40px, 6vw, 76px);
  padding-bottom: clamp(44px, 6vw, 84px);
}

.page-faq .faq-index {
  align-self: start;
  padding: 22px 20px 24px;
  border: 1px solid var(--faq-line);
  border-left: 2px solid var(--cyan-400);
  background: var(--faq-card);
}

.page-faq .faq-index__title {
  margin: 10px 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 24px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

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

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  min-height: 46px;
  padding: 10px 10px 10px 12px;
  border-left: 2px solid transparent;
  color: var(--paper);
  text-decoration: none;
  font-size: 15px;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-left-color: var(--cyan-400);
  background: rgba(53, 242, 214, 0.1);
  color: var(--cyan-300);
}

.page-faq .faq-index__num {
  font-size: 12px;
  color: var(--orange-500);
}

.page-faq .faq-index__count {
  font-size: 12px;
  color: var(--gray-500);
}

.page-faq .faq-index__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-500);
}

.page-faq .faq-index__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 20px;
  width: 100%;
  min-height: 44px;
  padding: 0 18px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
}

.page-faq .faq-main {
  display: grid;
  gap: clamp(34px, 5vw, 56px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--bar-h) + 24px);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--cyan-400);
}

.page-faq .faq-group__idx {
  font-size: 13px;
  color: var(--cyan-400);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.6vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-faq .faq-group__count {
  margin-left: auto;
  font-size: 12px;
  color: var(--gray-500);
}

.page-faq .faq-group__lead {
  margin: 16px 0 6px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 241, 234, 0.72);
}

.page-faq .faq-q {
  border-bottom: 1px solid var(--faq-line);
  transition: background-color 0.2s var(--ease);
}

.page-faq .faq-q > summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  list-style: none;
  cursor: pointer;
  padding: 18px 42px 18px 2px;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-q > summary::marker {
  content: "";
}

.page-faq .faq-q > summary::after {
  content: "+";
  position: absolute;
  right: 8px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 21px;
  line-height: 1;
  color: var(--cyan-400);
  transition: transform 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-q[open] > summary::after {
  content: "−";
  color: var(--orange-500);
}

.page-faq .faq-q > summary:hover,
.page-faq .faq-q > summary:focus-visible {
  color: var(--cyan-300);
}

.page-faq .faq-q[open] {
  background: linear-gradient(90deg, rgba(53, 242, 214, 0.07), rgba(53, 242, 214, 0) 78%);
}

.page-faq .faq-q[open] > summary {
  color: var(--cyan-300);
}

.page-faq .faq-q__body {
  max-width: 32em;
  padding: 0 2px 22px;
}

.page-faq .faq-q__body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(244, 241, 234, 0.8);
}

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

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

/* ---------- 暖白重心区块 ---------- */
.page-faq .faq-group--paper {
  background: var(--paper);
  color: var(--ink-900);
  border-radius: var(--radius);
  padding: clamp(22px, 4vw, 40px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.page-faq .faq-group--paper .faq-group__head {
  border-bottom-color: var(--ink-900);
}

.page-faq .faq-group--paper .faq-group__title {
  color: var(--ink-900);
}

.page-faq .faq-group--paper .faq-group__idx {
  color: var(--faq-teal);
}

.page-faq .faq-group--paper .faq-group__count {
  color: rgba(6, 17, 15, 0.55);
}

.page-faq .faq-group--paper .faq-group__lead {
  color: rgba(6, 17, 15, 0.72);
}

.page-faq .faq-paper__figure {
  margin: 20px 0 22px;
  border: 1px solid var(--faq-line-dark);
  overflow: hidden;
}

.page-faq .faq-paper__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 8 / 3;
  object-fit: cover;
}

.page-faq .faq-group--paper .faq-q {
  border-bottom-color: var(--faq-line-dark);
}

.page-faq .faq-group--paper .faq-q > summary {
  color: var(--ink-900);
}

.page-faq .faq-group--paper .faq-q > summary::after {
  color: var(--faq-teal);
}

.page-faq .faq-group--paper .faq-q[open] {
  background: linear-gradient(90deg, rgba(11, 122, 105, 0.1), rgba(11, 122, 105, 0) 78%);
}

.page-faq .faq-group--paper .faq-q[open] > summary,
.page-faq .faq-group--paper .faq-q > summary:hover,
.page-faq .faq-group--paper .faq-q > summary:focus-visible {
  color: var(--faq-teal);
}

.page-faq .faq-group--paper .faq-q[open] > summary::after {
  color: var(--orange-500);
}

.page-faq .faq-group--paper .faq-q__body p {
  color: rgba(6, 17, 15, 0.78);
}

/* ---------- 三步流程 ---------- */
.page-faq .faq-steps {
  padding: clamp(46px, 7vw, 88px) 0;
  background:
    linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 100%);
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-steps__title,
.page-faq .faq-ask__title,
.page-faq .faq-help__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4.4vw, 42px);
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.page-faq .faq-steps__title {
  color: var(--paper);
  max-width: 16em;
}

.page-faq .faq-steps__lead {
  margin: 16px 0 34px;
  max-width: 33em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 241, 234, 0.7);
}

.page-faq .faq-steps__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(18px, 3vw, 26px);
}

.page-faq .faq-step {
  padding-left: 20px;
  border-left: 1px dashed rgba(255, 106, 43, 0.45);
}

.page-faq .faq-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
  border: 1px solid var(--orange-500);
  border-radius: 2px;
  background: rgba(255, 106, 43, 0.1);
  color: var(--orange-300);
  font-size: 16px;
  transform: rotate(-3deg);
}

.page-faq .faq-step__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-step__text {
  margin: 0;
  max-width: 30em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 241, 234, 0.74);
}

.page-faq .faq-checklist__wrap {
  margin-top: clamp(34px, 5vw, 52px);
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--faq-line);
  border-left: 2px solid var(--cyan-400);
  background: rgba(53, 242, 214, 0.05);
}

.page-faq .faq-checklist__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 0.01em;
  color: var(--cyan-300);
}

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

.page-faq .faq-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14.5px;
  line-height: 1.65;
  color: rgba(244, 241, 234, 0.82);
}

.page-faq .faq-checklist li::before {
  content: "";
  flex: 0 0 auto;
  width: 15px;
  height: 15px;
  margin-top: 4px;
  border: 1px solid var(--cyan-400);
  border-radius: 2px;
  background: rgba(53, 242, 214, 0.16);
}

/* ---------- 高频问题 ---------- */
.page-faq .faq-ask {
  padding: clamp(46px, 7vw, 88px) 0;
}

.page-faq .faq-ask__title {
  color: var(--paper);
  margin-bottom: clamp(22px, 4vw, 38px);
}

.page-faq .faq-ask__grid {
  counter-reset: ask;
  display: grid;
  min-width: 0;
}

.page-faq .faq-ask__grid .faq-q {
  counter-increment: ask;
}

.page-faq .faq-ask__grid .faq-q > summary::before {
  content: counter(ask, decimal-leading-zero);
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 2.1;
  color: var(--gray-500);
}

.page-faq .faq-ask__grid .faq-q:first-child {
  border-top: 1px solid var(--faq-line);
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-help {
  background: var(--paper);
  color: var(--ink-900);
  padding: clamp(42px, 6vw, 84px) 0;
}

.page-faq .faq-help__inner {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  min-width: 0;
}

.page-faq .faq-help .sb-eyebrow {
  color: var(--faq-teal);
}

.page-faq .faq-help__title {
  color: var(--ink-900);
  max-width: 15em;
}

.page-faq .faq-help__text {
  margin: 18px 0 0;
  max-width: 32em;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(6, 17, 15, 0.76);
}

.page-faq .faq-help__link {
  display: inline-flex;
  align-items: center;
  margin-top: 24px;
  min-height: 44px;
  padding: 0 20px;
  text-decoration: none;
  color: var(--ink-900);
  border-color: var(--ink-900);
  font-size: 14px;
  font-weight: 600;
}

.page-faq .faq-help__link:hover,
.page-faq .faq-help__link:focus-visible {
  background: var(--ink-900);
  color: var(--paper);
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-top: 1px solid var(--faq-line-dark);
}

.page-faq .faq-contact {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--faq-line-dark);
}

.page-faq .faq-contact__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--faq-teal);
}

.page-faq .faq-contact__value {
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.6vw, 21px);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink-900);
  word-break: break-word;
}

.page-faq .faq-contact__hint {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(6, 17, 15, 0.6);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 860px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.85fr);
  }

  .page-faq .faq-steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(20px, 3vw, 34px);
  }

  .page-faq .faq-step {
    padding-left: 0;
    padding-top: 24px;
    border-left: none;
    border-top: 1px dashed rgba(255, 106, 43, 0.45);
  }

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

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

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 268px minmax(0, 1fr);
    column-gap: clamp(32px, 4vw, 64px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar-h) + 20px);
  }

  .page-faq .faq-ask__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(32px, 4vw, 64px);
  }

  .page-faq .faq-ask__grid .faq-q:nth-child(2) {
    border-top: 1px solid var(--faq-line);
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero__title {
    font-size: clamp(48px, 4.6vw, 62px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-q,
  .page-faq .faq-q > summary,
  .page-faq .faq-q > summary::after {
    transition: none;
  }
}
<<<END>>>