.page-faq {
  --faq-accent: var(--cyan-400);
  --faq-rail: rgba(33, 230, 193, 0.16);
}

.page-faq .faq-hero {
  position: relative;
  padding: clamp(36px, 7vw, 78px) 0 clamp(28px, 5vw, 52px);
  border-bottom: 1px solid var(--line-600);
  background:
    radial-gradient(120% 130% at 4% -10%, rgba(33, 230, 193, 0.16), transparent 58%),
    radial-gradient(90% 90% at 96% 6%, rgba(245, 185, 63, 0.09), transparent 62%);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 20px;
  max-width: 15em;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 7vw, 64px);
  line-height: 1.06;
  letter-spacing: 0.01em;
  color: var(--white-100);
}

.page-faq .lede {
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--mist-400);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.page-faq .meta-item {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--line-600);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--mist-400);
  background: rgba(12, 38, 55, 0.55);
}

.page-faq .meta-num {
  font-size: 15px;
  color: var(--cyan-400);
  font-weight: 700;
}

.page-faq .meta-item--muted {
  color: var(--mist-400);
  border-style: dashed;
}

.page-faq .faq-shell {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
  padding: clamp(28px, 5vw, 54px) 0 clamp(48px, 7vw, 88px);
}

.page-faq .toc {
  align-self: start;
  padding: 16px 18px;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-m);
  background: var(--ink-900);
}

.page-faq .toc-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

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

.page-faq .toc-item {
  border-top: 1px solid rgba(23, 69, 92, 0.6);
}

.page-faq .toc-item:first-child {
  border-top: 0;
}

.page-faq .toc-link {
  display: block;
  padding: 10px 8px 10px 12px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.5;
  color: var(--mist-400);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .toc-link:hover,
.page-faq .toc-link:focus-visible {
  color: var(--white-100);
  background: rgba(33, 230, 193, 0.06);
}

.page-faq .toc-link[aria-current="true"] {
  color: var(--cyan-400);
  border-left-color: var(--cyan-400);
  background: var(--cyan-a10);
}

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

.page-faq .faq-section {
  padding: clamp(30px, 4vw, 48px) 0;
  border-top: 1px solid var(--line-600);
}

.page-faq .faq-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .section-lede {
  max-width: 36em;
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist-400);
}

.page-faq .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4vw, 36px);
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--white-100);
  margin: 10px 0 0;
}

.page-faq .faq-figure {
  margin: 26px 0 clamp(24px, 3vw, 34px);
  padding: 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-m);
  border: 1px solid var(--line-600);
  object-fit: cover;
  background: var(--ink-800);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist-400);
}

/* 可勾选对照表 */
.page-faq .checklist {
  counter-reset: total;
  display: grid;
  gap: 18px;
}

.page-faq .check-group {
  counter-reset: seg;
  padding: 18px 16px 8px;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-m);
  background: linear-gradient(180deg, var(--ink-850), var(--ink-900));
}

.page-faq .check-group__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-600);
}

.page-faq .check-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white-100);
}

.page-faq .check-item {
  display: grid;
  grid-template-columns: 20px 2.6rem minmax(0, 1fr);
  align-items: start;
  gap: 10px;
  padding: 13px 4px;
  border-bottom: 1px dashed rgba(23, 69, 92, 0.85);
  cursor: pointer;
  transition: background var(--dur) var(--ease);
}

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

.page-faq .check-item__box {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  accent-color: var(--cyan-400);
  cursor: pointer;
}

.page-faq .check-item__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.9;
  color: var(--line-600);
  color: #4d8399;
}

.page-faq .check-item__text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--white-100);
  transition: color var(--dur) var(--ease);
}

.page-faq .check-item:hover {
  background: rgba(33, 230, 193, 0.05);
}

.page-faq .check-item:has(.check-item__box:checked) {
  background: var(--cyan-a10);
}

.page-faq .check-item:has(.check-item__box:checked) .check-item__text {
  color: var(--pale-200);
}

.page-faq .check-item:has(.check-item__box:checked) .check-item__no {
  color: var(--cyan-400);
}

.page-faq .check-group--env .check-item__box:checked {
  counter-increment: total seg;
}

.page-faq .check-group--account .check-item__box:checked {
  counter-increment: total seg;
}

.page-faq .check-group--verify .check-item__box:checked {
  counter-increment: total seg;
}

.page-faq .check-group--fix .check-item__box:checked {
  counter-increment: total seg;
}

.page-faq .check-count {
  margin: 14px 0 8px;
  padding-top: 12px;
  border-top: 1px solid var(--line-600);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mist-400);
}

.page-faq .check-count__num::after {
  content: counter(seg);
}

.page-faq .check-count__num {
  color: var(--cyan-400);
  font-weight: 700;
  font-size: 14px;
}

.page-faq .check-total {
  margin: 0;
  padding: 16px 18px;
  border: 1px solid var(--amber-400);
  border-radius: var(--radius-m);
  background: var(--amber-a12);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--white-100);
}

.page-faq .check-total__num {
  font-size: 20px;
  font-weight: 700;
  color: var(--amber-400);
}

.page-faq .check-total__num::after {
  content: counter(total);
}

/* 提示条 */
.page-faq .tip {
  margin: 22px 0 0;
  padding: 14px 18px;
  border-left: 4px solid var(--coral-400);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  background: var(--coral-a12);
  font-size: 14px;
  line-height: 1.75;
  color: var(--white-100);
}

/* 四步轨道 */
.page-faq .steps {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-faq .step {
  position: relative;
  padding: 20px 18px 22px;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-m);
  background: var(--ink-800);
}

.page-faq .step::after {
  content: "";
  position: absolute;
  left: 18px;
  bottom: 0;
  width: 42px;
  height: 2px;
  background: var(--cyan-a18);
}

.page-faq .step__no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan-400);
}

.page-faq .step__title {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white-100);
}

.page-faq .step__rule {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist-400);
}

.page-faq .step--last {
  border-color: rgba(245, 185, 63, 0.55);
  background: linear-gradient(180deg, rgba(245, 185, 63, 0.1), var(--ink-800));
}

.page-faq .step--last .step__no {
  color: var(--amber-400);
}

.page-faq .step--last::after {
  background: rgba(245, 185, 63, 0.4);
}

/* 异常分类 */
.page-faq .err-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .err-card {
  position: relative;
  padding: 18px 18px 16px 20px;
  border: 1px solid var(--line-600);
  border-left: 3px solid var(--line-600);
  border-radius: var(--radius-s) var(--radius-m) var(--radius-m) var(--radius-s);
  background: var(--ink-850);
  transition: border-left-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .err-card:hover {
  border-left-color: var(--cyan-400);
  transform: translateY(-2px);
}

.page-faq .err-card__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--coral-400);
}

.page-faq .err-card__title {
  margin: 8px 0 8px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--white-100);
}

.page-faq .err-card__cause {
  margin: 0 0 6px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist-400);
}

.page-faq .err-card__first {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--pale-200);
}

.page-faq .err-card__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(33, 230, 193, 0.35);
}

.page-faq .err-card__link:hover,
.page-faq .err-card__link:focus-visible {
  color: var(--amber-400);
  border-bottom-color: rgba(245, 185, 63, 0.5);
}

/* 问答手风琴 */
.page-faq .qa-group {
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px dashed rgba(23, 69, 92, 0.9);
}

.page-faq .qa-group:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.page-faq .qa-group__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--cyan-400);
}

.page-faq .qa-item {
  margin-bottom: 10px;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-s);
  background: var(--ink-900);
  overflow: hidden;
}

.page-faq .qa-item[open] {
  border-color: rgba(33, 230, 193, 0.45);
  background: var(--ink-850);
}

.page-faq .qa-item__q {
  position: relative;
  padding: 15px 46px 15px 18px;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.65;
  color: var(--white-100);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa-item__q::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan-400);
}

.page-faq .qa-item[open] .qa-item__q::after {
  content: "–";
  color: var(--amber-400);
}

.page-faq .qa-item__q:hover {
  background: rgba(33, 230, 193, 0.06);
}

.page-faq .qa-item__a {
  margin: 0;
  padding: 0 18px 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-400);
}

/* 反馈与流程 */
.page-faq .feedback-card {
  display: grid;
  gap: 22px;
  margin-top: 26px;
  padding: 22px 18px;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-m);
  background: linear-gradient(160deg, var(--ink-850), var(--ink-900));
}

.page-faq .flow {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .flow__item {
  position: relative;
  padding-left: 18px;
  border-left: 2px solid var(--line-600);
}

.page-faq .flow__item:last-child {
  border-left-color: var(--green-400);
}

.page-faq .flow__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan-400);
}

.page-faq .flow__name {
  margin: 6px 0 6px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white-100);
}

.page-faq .flow__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist-400);
}

.page-faq .feedback-tips {
  padding: 16px 16px 18px;
  border: 1px dashed var(--line-600);
  border-radius: var(--radius-s);
  background: rgba(6, 24, 38, 0.5);
}

.page-faq .feedback-tips__title {
  margin: 0 0 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--amber-400);
}

.page-faq .feedback-tips__list {
  margin: 0;
  padding-left: 1.1em;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist-400);
}

.page-faq .feedback-tips__list li::marker {
  color: var(--amber-400);
}

.page-faq .contact-strip {
  display: grid;
  gap: 14px;
  margin-top: 24px;
  padding: 18px;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-m);
  background: var(--cyan-a10);
}

.page-faq .contact-strip__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--white-100);
  word-break: break-word;
}

.page-faq .contact-strip__text a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(33, 230, 193, 0.4);
}

.page-faq .contact-strip__text a:hover {
  color: var(--amber-400);
}

.page-faq .contact-strip .btn {
  justify-self: start;
}

/* 术语表 */
.page-faq .glossary {
  margin: 26px 0 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-600);
}

.page-faq .glossary__row {
  display: grid;
  gap: 4px;
  padding: 15px 2px;
  border-bottom: 1px solid var(--line-600);
}

.page-faq .glossary__term {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan-400);
}

.page-faq .glossary__def {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-400);
}

.page-faq .faq-footer-note {
  margin: 26px 0 0;
  padding-top: 18px;
  border-top: 1px dashed var(--line-600);
  font-size: 14px;
  line-height: 1.9;
  color: var(--mist-400);
}

.page-faq .faq-footer-note a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(33, 230, 193, 0.35);
}

.page-faq .faq-footer-note a:hover {
  color: var(--amber-400);
}

@media (min-width: 560px) {
  .page-faq .err-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .contact-strip {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-faq .contact-strip .btn {
    justify-self: end;
  }

  .page-faq .glossary__row {
    grid-template-columns: 8.5rem minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-faq .steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .step__rule {
    font-size: 13px;
  }

  .page-faq .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .feedback-card {
    padding: 26px 24px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-shell {
    grid-template-columns: 240px minmax(0, 1fr);
    align-items: start;
  }

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

  .page-faq .check-group {
    padding: 20px 22px 10px;
  }

  .page-faq .check-item {
    grid-template-columns: 20px 3rem minmax(0, 1fr);
    padding: 14px 8px;
  }

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

  .page-faq .err-card:nth-child(3n + 2) {
    transform: translateY(14px);
  }

  .page-faq .err-card:nth-child(3n + 2):hover {
    transform: translateY(12px);
  }
}

@media (min-width: 1200px) {
  .page-faq .steps {
    gap: 20px;
  }

  .page-faq .step {
    padding: 24px 22px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .err-card,
  .page-faq .err-card:hover,
  .page-faq .err-card:nth-child(3n + 2),
  .page-faq .err-card:nth-child(3n + 2):hover {
    transform: none;
  }
}
<<<END>>>