.page-faq {
  --faq-line: var(--ink-700);
  --faq-panel: var(--ink-800);
  --faq-gap: clamp(14px, 2vw, 22px);
  background: var(--ink-900);
  color: var(--paper);
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-faq section[id] {
  scroll-margin-top: 92px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(26px, 5vw, 60px) 0 clamp(24px, 4vw, 46px);
  border-bottom: 2px solid var(--faq-line);
  background:
    radial-gradient(120% 88% at 86% 4%, rgba(59, 224, 200, 0.16), transparent 58%),
    radial-gradient(90% 70% at 4% 96%, rgba(255, 138, 61, 0.1), transparent 60%);
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 36px);
  align-items: start;
  margin-top: clamp(14px, 2vw, 24px);
}

@media (min-width: 960px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  }
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-size: clamp(26px, 4.4vw, 46px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-lede {
  margin: 16px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--paper-dim);
}

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

.page-faq .faq-quicks {
  border: 2px solid var(--faq-line);
  background: var(--faq-panel);
  box-shadow: var(--shadow-solid);
  padding: 16px 16px 8px;
}

.page-faq .faq-quicks-title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

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

.page-faq .faq-quicks li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 10px 0;
  border-top: 1px dashed var(--faq-line);
}

.page-faq .faq-quicks li:first-child {
  border-top: 0;
}

.page-faq .faq-quick-k {
  font-size: 12px;
  color: var(--gray);
  letter-spacing: 0.02em;
}

.page-faq .faq-quick-v {
  font-size: 14px;
  color: var(--paper);
}

/* ---------- 章节头 ---------- */
.page-faq .faq-head .chapter-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 10px 14px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--faq-line);
}

.page-faq .faq-head .chapter-title {
  margin: 0;
  font-size: clamp(19px, 2.7vw, 27px);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-head .chapter-index {
  font-size: clamp(13px, 1.4vw, 15px);
  color: var(--cyan);
  letter-spacing: 0.08em;
}

.page-faq .faq-head .chapter-status {
  white-space: nowrap;
}

@media (max-width: 620px) {
  .page-faq .faq-head .chapter-head {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .page-faq .faq-head .chapter-status {
    grid-column: 1 / -1;
    justify-self: start;
  }
}

/* ---------- 三条路径 ---------- */
.page-faq .faq-sheet {
  margin-top: clamp(18px, 2.6vw, 28px);
  padding: clamp(18px, 3vw, 34px);
  background: var(--paper);
  color: var(--ink-900);
  border: 2px solid var(--ink-900);
  box-shadow: 10px 10px 0 rgba(0, 0, 0, 0.45);
}

.page-faq .faq-sheet-lede {
  margin: 0 0 clamp(14px, 2vw, 22px);
  max-width: 40em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-700);
}

.page-faq .faq-paths {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

@media (min-width: 900px) {
  .page-faq .faq-paths {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .faq-path {
  padding: 18px 0 4px;
  border-top: 2px solid var(--ink-900);
}

@media (min-width: 900px) {
  .page-faq .faq-path {
    padding: 4px 22px;
    border-top: 0;
    border-left: 2px solid var(--ink-900);
  }

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

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

.page-faq .faq-path-idx {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange-deep);
}

.page-faq .faq-path h3 {
  margin: 0 0 14px;
  font-size: clamp(16px, 1.8vw, 19px);
  font-weight: 900;
  line-height: 1.4;
  color: var(--ink-900);
}

/* ---------- 编号步骤 ---------- */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 9px 12px;
  background: var(--ink-900);
  border-left: 3px solid var(--cyan);
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-dim);
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  color: var(--cyan);
}

.page-faq .faq-sheet .faq-steps li {
  background: var(--paper-2);
  border-left-color: var(--orange-deep);
  color: var(--ink-700);
}

.page-faq .faq-sheet .faq-steps li::before {
  color: var(--orange-deep);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: clamp(20px, 3vw, 32px) 0 0;
}

.page-faq .faq-figure--inline {
  margin-top: clamp(16px, 2.4vw, 24px);
}

/* ---------- 索引 + 问答 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 34px);
  align-items: start;
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: 232px minmax(0, 1fr);
  }
}

.page-faq .faq-index {
  border: 2px solid var(--faq-line);
  background: var(--ink-900);
  padding: 14px 12px;
}

.page-faq .faq-index-title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-faq .faq-index-list {
  display: flex;
  flex-direction: row;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 12px;
  border: 2px solid var(--faq-line);
  border-left-width: 3px;
  color: var(--paper-dim);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  color: var(--paper);
  border-color: var(--cyan);
  background: var(--faq-panel);
  outline: none;
}

.page-faq .faq-index-num {
  font-size: 11px;
  color: var(--cyan);
}

@media (min-width: 1000px) {
  .page-faq .faq-index {
    position: sticky;
    top: 92px;
  }

  .page-faq .faq-index-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-index-link {
    display: flex;
    white-space: normal;
    padding: 9px 10px;
    border: 0;
    border-left: 3px solid transparent;
  }

  .page-faq .faq-index-link:hover,
  .page-faq .faq-index-link:focus-visible {
    background: var(--faq-panel);
    border-left-color: var(--cyan);
  }
}

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

.page-faq .faq-group {
  padding-bottom: clamp(30px, 4.5vw, 56px);
}

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

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  margin-top: 10px;
  border: 2px solid var(--faq-line);
  background: var(--faq-panel);
  transition: border-color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--cyan-deep);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.45);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.6vw, 16px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

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

.page-faq .faq-item > summary:hover {
  background: var(--ink-700);
}

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

.page-faq .faq-item[open] > summary {
  border-bottom: 1px dashed var(--faq-line);
  color: var(--cyan);
}

.page-faq .faq-mark {
  display: inline-grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border: 2px solid var(--cyan);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1;
}

.page-faq .faq-mark::before {
  content: "+";
}

.page-faq .faq-item[open] .faq-mark {
  background: var(--cyan);
  color: var(--ink-900);
}

.page-faq .faq-item[open] .faq-mark::before {
  content: "–";
}

.page-faq .faq-a {
  padding: 14px 16px 18px;
}

.page-faq .faq-a p {
  margin: 0 0 10px;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper-dim);
}

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

.page-faq .faq-a .mono {
  color: var(--cyan);
  font-size: 14px;
}

.page-faq .faq-a .faq-steps li {
  background: var(--ink-900);
}

.page-faq .faq-inline-next {
  margin: 18px 0 0;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--gray);
}

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

.page-faq .faq-inline-next a:hover {
  color: var(--paper);
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-contact {
  margin-top: clamp(18px, 2.6vw, 28px);
  padding: clamp(20px, 3vw, 34px);
  border: 2px solid var(--orange);
  background: linear-gradient(150deg, var(--ink-800), var(--ink-900) 68%);
  box-shadow: 10px 10px 0 rgba(255, 138, 61, 0.28);
}

.page-faq .faq-contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 34px);
}

@media (min-width: 880px) {
  .page-faq .faq-contact-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  }
}

.page-faq .faq-contact-main h3 {
  margin: 0 0 12px;
  font-size: clamp(18px, 2.2vw, 23px);
  font-weight: 900;
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-contact-main p {
  margin: 0 0 14px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper-dim);
}

.page-faq .faq-prep-title {
  font-size: 11px !important;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange) !important;
}

.page-faq .faq-prep {
  list-style: none;
  counter-reset: faqprep;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-prep li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-dim);
}

.page-faq .faq-prep li::before {
  counter-increment: faqprep;
  content: counter(faqprep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  color: var(--orange);
}

.page-faq .faq-kvlist {
  margin: 0;
  border-top: 2px solid var(--faq-line);
}

.page-faq .faq-kvlist dt {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gray);
}

.page-faq .faq-kvlist dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-kvlist dt,
.page-faq .faq-kvlist dd {
  padding: 11px 0;
  border-bottom: 1px dashed var(--faq-line);
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-index-link,
  .page-faq .faq-item > summary {
    transition: none;
  }
}
<<<END>>>