.page-faq {
  background: var(--ink);
  color: var(--text);
}

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(18px, 3vw, 32px) clamp(32px, 5vw, 60px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(47, 182, 200, 0.20), transparent 62%),
    radial-gradient(80% 80% at 0% 100%, rgba(242, 193, 78, 0.10), transparent 65%);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(2.1rem, 8.4vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  margin: 10px 0 16px;
}

.page-faq .faq-hero .lede {
  color: var(--muted);
  font-size: clamp(0.98rem, 2.6vw, 1.08rem);
  line-height: 1.78;
  max-width: 46ch;
  margin: 0;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

/* 步骤树 */
.page-faq .step-tree {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .step-tree > li {
  border-bottom: 1px solid var(--line);
}

.page-faq .step-tree__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 14px;
  padding: 13px 6px;
  color: var(--text);
  text-decoration: none;
  transition: background-color 180ms var(--ease), padding-left 180ms var(--ease);
}

.page-faq .step-tree__link:hover,
.page-faq .step-tree__link:focus-visible {
  background: rgba(47, 182, 200, 0.09);
  padding-left: 12px;
}

.page-faq .step-tree__num {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--lake);
  letter-spacing: 0.04em;
}

.page-faq .step-tree__link.is-start .step-tree__num {
  color: var(--gold);
}

.page-faq .step-tree__body {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.page-faq .step-tree__label {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.35;
}

.page-faq .step-tree__meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

/* 问题速查 */
.page-faq .faq-index {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: clamp(26px, 4vw, 40px);
  padding-top: clamp(18px, 3vw, 26px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-index__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-right: 4px;
}

.page-faq .faq-index a {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.84rem;
  text-decoration: none;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  color: var(--lake-soft);
  border-color: var(--lake);
  background: rgba(47, 182, 200, 0.08);
}

/* 通用区块标题 */
.page-faq .faq-h2 {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(1.5rem, 5vw, 2.35rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 8px 0 12px;
}

.page-faq .faq-lede {
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.75;
  max-width: 58ch;
  margin: 0 0 clamp(22px, 3vw, 32px);
}

/* 五步详情 */
.page-faq .faq-steps {
  padding-block: clamp(40px, 7vw, 84px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-steps__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 46px);
}

.page-faq .step-list {
  min-width: 0;
}

.page-faq .step-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 96px;
}

.page-faq .step-item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-faq .step-item__num {
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 4vw, 1.9rem);
  line-height: 1;
  font-weight: 600;
  color: var(--line);
  transition: color 200ms var(--ease);
}

.page-faq .step-item--start .step-item__num {
  color: var(--gold);
}

.page-faq .step-item:hover .step-item__num {
  color: var(--lake);
}

.page-faq .step-item__content h3 {
  font-family: var(--font-title);
  font-size: 1.06rem;
  font-weight: 700;
  margin: 0 0 8px;
  line-height: 1.4;
}

.page-faq .step-item__content p {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.78;
}

.page-faq .faq-steps__media {
  align-self: start;
  min-width: 0;
}

.page-faq .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* 信号源 */
.page-faq .faq-sources {
  padding-block: clamp(40px, 7vw, 84px);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 36, 56, 0.55), rgba(7, 26, 43, 0));
}

.page-faq .faq-sources__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 46px);
}

.page-faq .src-list {
  display: grid;
  gap: 12px;
}

.page-faq .src-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-faq .src-card:hover {
  transform: translateY(-3px);
}

.page-faq .src-card--official:hover { border-color: var(--gold); }
.page-faq .src-card--partner:hover { border-color: var(--lake); }
.page-faq .src-card--text:hover { border-color: var(--mint); }

.page-faq .src-card__icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  color: var(--lake-soft);
}

.page-faq .src-card--official .src-card__icon { color: var(--gold); }
.page-faq .src-card--text .src-card__icon { color: var(--mint); }

.page-faq .src-card__content h3 {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 7px;
}

.page-faq .src-card__content p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.72;
}

.page-faq .src-tag {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  padding: 2px 7px;
  border: 1px solid currentColor;
  font-weight: 500;
}

.page-faq .src-tag--gold { color: var(--gold); }
.page-faq .src-tag--lake { color: var(--lake); }
.page-faq .src-tag--mint { color: var(--mint); }

.page-faq .faq-sources__media {
  align-self: stretch;
  min-width: 0;
}

/* 问答区：浅砂阅读底 */
.page-faq .faq-questions {
  padding-block: clamp(40px, 7vw, 84px);
  background: var(--paper);
  color: var(--paper-ink);
}

.page-faq .faq-questions .eyebrow {
  color: #8a6a12;
}

.page-faq .faq-questions .faq-h2 {
  color: var(--paper-ink);
}

.page-faq .faq-questions .faq-lede {
  color: rgba(11, 36, 54, 0.7);
  margin-bottom: clamp(24px, 3vw, 34px);
}

.page-faq .qa-group {
  margin-bottom: clamp(26px, 4vw, 40px);
}

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

.page-faq .qa-group__title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-title);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: rgba(11, 36, 54, 0.55);
  text-transform: uppercase;
  margin: 0 0 4px;
  padding-bottom: 10px;
  border-bottom: 2px solid rgba(11, 36, 54, 0.6);
}

.page-faq .qa-group__num {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: #0a6f7d;
}

.page-faq .qa {
  border-bottom: 1px solid rgba(11, 36, 54, 0.16);
  scroll-margin-top: 90px;
}

.page-faq .qa:target {
  background: rgba(47, 182, 200, 0.12);
}

.page-faq .qa summary {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 4px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--paper-ink);
}

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

.page-faq .qa summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1.2;
  color: #0a6f7d;
  transition: transform 240ms var(--ease);
}

.page-faq .qa[open] summary::after {
  content: "−";
}

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

.page-faq .qa__body {
  max-width: 62ch;
  padding: 0 4px 18px;
  font-size: 0.93rem;
  line-height: 1.8;
  color: rgba(11, 36, 54, 0.78);
}

.page-faq .qa__body p {
  margin: 0 0 8px;
}

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

.page-faq .qa__body .link-arrow {
  color: #0a6f7d;
}

/* 提醒与通知 */
.page-faq .faq-alerts {
  padding-block: clamp(40px, 7vw, 84px);
  border-bottom: 1px solid var(--line);
}

.page-faq .alert-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 40px);
}

.page-faq .alert-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .alert-card {
  padding: 18px;
  border: 1px solid var(--line);
  background: var(--ink-2);
  min-width: 0;
}

.page-faq .alert-card h3 {
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 9px;
}

.page-faq .alert-card p {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.72;
}

.page-faq .alert-card .chip {
  margin-top: 4px;
}

.page-faq .local-note {
  margin-top: clamp(24px, 4vw, 36px);
  padding: 20px;
  border-left: 2px solid var(--lake);
  background: rgba(47, 182, 200, 0.07);
}

.page-faq .local-note h3 {
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 9px;
}

.page-faq .local-note p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.8;
  max-width: 70ch;
}

.page-faq .local-note .link-arrow {
  color: var(--lake-soft);
  margin-left: 4px;
}

/* 联系 */
.page-faq .faq-contact {
  padding-block: clamp(40px, 7vw, 88px);
  background: linear-gradient(135deg, rgba(47, 182, 200, 0.16), rgba(242, 193, 78, 0.10));
}

.page-faq .contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
}

.page-faq .contact-grid__main .faq-lede {
  margin-bottom: clamp(20px, 3vw, 26px);
}

.page-faq .contact-facts {
  display: grid;
  gap: 14px;
  align-content: start;
  padding: 22px;
  border: 1px solid var(--line);
  background: rgba(7, 26, 43, 0.6);
  min-width: 0;
}

.page-faq .contact-facts__item {
  display: grid;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(30, 58, 82, 0.9);
}

.page-faq .contact-facts__item:last-of-type {
  padding-bottom: 0;
  border-bottom: none;
}

.page-faq .contact-facts__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-faq .contact-facts__value {
  font-size: 0.95rem;
  color: var(--text);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-faq .contact-facts__value.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}

.page-faq .contact-facts__note {
  margin: 4px 0 0;
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--muted);
}

@media (min-width: 760px) {
  .page-faq .alert-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .page-faq .faq-steps__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-faq .faq-sources__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: start;
  }

  .page-faq .alert-grid {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    align-items: start;
  }

  .page-faq .contact-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-faq .faq-steps__media {
    position: sticky;
    top: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step-tree__link,
  .page-faq .src-card,
  .page-faq .qa summary::after,
  .page-faq .faq-index a,
  .page-faq .step-item__num {
    transition: none;
  }

  .page-faq .src-card:hover {
    transform: none;
  }
}
<<<END>>>