.page-faq {
  --faq-index-top: calc(var(--header-h) + 20px);
  --faq-card-pad: clamp(18px, 2.4vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(28px, 5vw, 56px) 0 clamp(32px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 130% at 8% 0%, rgba(53, 242, 200, 0.12), transparent 55%),
    radial-gradient(90% 100% at 100% 6%, rgba(255, 181, 71, 0.10), transparent 58%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
}

.page-faq .faq-hero .crumbs {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: center;
}

.page-faq .faq-hero__text .kicker {
  margin: 0 0 14px;
}

.page-faq .faq-hero__text h1 {
  margin: 0 0 18px;
  max-width: 15em;
}

.page-faq .faq-hero__text .lead {
  margin: 0 0 26px;
  max-width: 44em;
}

.page-faq .faq-hero__figure {
  --notch: var(--ink-2);
  margin: 0;
}

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

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
  background: rgba(18, 36, 58, 0.55);
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-jump a .mono {
  color: var(--mint);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--paper);
  border-color: var(--mint);
  background: rgba(53, 242, 200, 0.08);
}

/* ---------- 双栏主体 ---------- */
.page-faq .faq-body {
  padding-top: clamp(36px, 5vw, 64px);
}

.page-faq .faq-body__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

/* 左栏索引 */
.page-faq .faq-index {
  display: grid;
  gap: 20px;
  align-content: start;
}

.page-faq .faq-index > .kicker {
  margin: 0;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
  counter-reset: faqidx;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 14px;
  border-left: 2px solid var(--line);
  color: var(--muted);
  font-size: 15px;
  text-decoration: none;
  background: linear-gradient(90deg, rgba(18, 36, 58, 0.6), transparent);
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-index__num {
  font-size: 12px;
  color: var(--sky);
  letter-spacing: .08em;
}

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

.page-faq .faq-index__list a:hover .faq-index__num,
.page-faq .faq-index__list a:focus-visible .faq-index__num {
  color: var(--mint);
}

.page-faq .faq-index__contact {
  border: 1px solid var(--line);
  border-top: 2px solid var(--mint);
  background: var(--panel);
  padding: 18px;
  display: grid;
  gap: 10px;
  justify-items: start;
}

.page-faq .faq-index__contact-title {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-index__mail {
  margin: 0;
  font-size: 13px;
  color: var(--mint);
  word-break: break-all;
}

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

/* ---------- 问答流 ---------- */
.page-faq .faq-stream {
  display: grid;
  gap: clamp(18px, 2.6vw, 26px);
  min-width: 0;
}

.page-faq .faq-group {
  --notch: var(--ink);
  padding: var(--faq-card-pad);
  scroll-margin-top: var(--faq-index-top);
}

.page-faq .faq-group__head {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding-bottom: 18px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--ink);
  background: var(--mint);
  padding: 3px 8px;
  line-height: 1.4;
}

.page-faq .faq-group__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-group__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq details {
  border-bottom: 1px solid var(--line);
}

.page-faq details:last-of-type {
  border-bottom: 0;
}

.page-faq summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
  transition: color .2s var(--ease);
}

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

.page-faq summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.2;
  color: var(--mint);
}

.page-faq details[open] summary::after {
  content: "–";
}

.page-faq summary:hover,
.page-faq summary:focus-visible,
.page-faq details[open] summary {
  color: var(--mint);
}

.page-faq .faq-answer {
  padding: 0 0 18px 0;
}

.page-faq .faq-answer p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-text);
  max-width: 62ch;
}

.page-faq .faq-group__more {
  display: inline-block;
  margin-top: 18px;
  font-size: 14px;
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 200, 0.4);
  padding-bottom: 2px;
}

.page-faq .faq-group__more:hover,
.page-faq .faq-group__more:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--sky);
}

/* ---------- 反馈块（Deep 蓝底） ---------- */
.page-faq .faq-group--wide {
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-top: 2px solid var(--amber);
  padding: var(--faq-card-pad);
  scroll-margin-top: var(--faq-index-top);
}

.page-faq .faq-group--wide .faq-group__num {
  background: var(--amber);
}

.page-faq .faq-feedback__body {
  display: grid;
  gap: clamp(20px, 3vw, 30px);
  align-items: start;
  margin-top: 6px;
}

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

.page-faq .faq-feedback__visual .figure {
  --notch: var(--ink-2);
  margin: 0;
}

.page-faq .faq-feedback__visual figcaption {
  font-size: 13px;
  color: var(--muted);
}

.page-faq .faq-steps {
  list-style: none;
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-faq .faq-steps__item {
  border-top: 2px solid var(--amber);
  padding-top: 14px;
}

.page-faq .faq-steps__num {
  display: block;
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--amber);
  margin-bottom: 8px;
}

.page-faq .faq-steps__item h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-steps__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-checklist__wrap {
  margin-top: clamp(22px, 3vw, 30px);
  border: 1px solid var(--line);
  background: rgba(18, 36, 58, 0.7);
  padding: 18px;
}

.page-faq .faq-checklist__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--sky);
}

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

.page-faq .faq-checklist label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--body-text);
  cursor: pointer;
}

.page-faq .faq-checklist input[type="checkbox"] {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin: 4px 0 0;
  accent-color: var(--mint);
}

.page-faq .faq-checklist input:checked + span {
  color: var(--mint);
  text-decoration: line-through;
  text-decoration-color: rgba(53, 242, 200, 0.5);
}

/* ---------- 联系区 ---------- */
.page-faq .faq-contact {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
  padding-top: clamp(36px, 5vw, 64px);
  padding-bottom: clamp(40px, 5vw, 72px);
}

.page-faq .faq-contact__head {
  margin-bottom: clamp(22px, 3vw, 32px);
  max-width: 62ch;
}

.page-faq .faq-contact__title {
  margin: 12px 0 14px;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.25;
}

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

.page-faq .faq-contact__grid {
  display: grid;
  gap: 14px;
}

.page-faq .faq-contact__card {
  --notch: var(--ink-2);
  padding: 20px;
  display: grid;
  gap: 8px;
  align-content: start;
}

.page-faq .faq-contact__label {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--sky);
  text-transform: uppercase;
}

.page-faq .faq-contact__value {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-contact__card .mono.faq-contact__value {
  color: var(--mint);
}

.page-faq .faq-contact__hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-contact__hint a {
  display: inline-block;
  margin-right: 14px;
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 200, 0.4);
}

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

.page-faq .faq-contact__card--amber {
  border-top: 2px solid var(--amber);
}

.page-faq .faq-contact__card--amber .faq-contact__label {
  color: var(--amber);
}

.page-faq .faq-contact__card .btn {
  justify-self: start;
  margin-top: 4px;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-contact__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: end;
  }

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

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-index-top);
  }

  .page-faq .faq-feedback__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
  }

  .page-faq .faq-group {
    padding: clamp(24px, 2.6vw, 34px);
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-contact__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump a,
  .page-faq .faq-index__list a,
  .page-faq summary {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>