.page-faq {
  --faq-num-col: 66px;
  --faq-step-space: clamp(56px, 8vw, 120px);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-faq .faq-hero {
  padding: clamp(26px, 4.5vw, 52px) 0 clamp(26px, 4vw, 44px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(20px, 3vw, 44px);
  margin-top: clamp(16px, 2.6vw, 28px);
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.1rem, 6.2vw, 4.4rem);
  line-height: 1.08;
  letter-spacing: 0.02em;
  color: var(--deep);
  margin: 0.35em 0 0;
  max-width: 20ch;
}

.page-faq .faq-hero__lede {
  margin: clamp(14px, 2.2vw, 22px) 0 0;
  max-width: 42ch;
  font-size: clamp(1rem, 1.25vw, 1.0625rem);
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .quick-jump {
  padding: clamp(16px, 2.4vw, 24px);
  align-self: end;
}

.page-faq .quick-jump__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--deep);
}

.page-faq .quick-jump__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}

.page-faq .quick-jump__list li + li {
  border-top: 1px solid var(--line);
}

.page-faq .quick-jump__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  color: var(--ink);
  font-size: 0.9rem;
  line-height: 1.6;
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-faq .quick-jump__list a:hover,
.page-faq .quick-jump__list a:focus-visible {
  color: var(--gold);
}

.page-faq .quick-jump__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .guide-figure {
  margin: clamp(24px, 4vw, 44px) 0 0;
}

.page-faq .figure__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .figure__caption {
  margin-top: 10px;
  font-size: 0.8125rem;
  color: var(--deep);
  line-height: 1.7;
}

/* 四步长卷 */
.page-faq .guide-steps-section {
  padding: clamp(8px, 2vw, 20px) 0 clamp(24px, 5vw, 56px);
}

.page-faq .faq-steps {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: calc(var(--faq-num-col) / 2);
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--line) 7%, var(--line) 93%, transparent);
  z-index: 0;
}

.page-faq .step {
  position: relative;
  display: grid;
  grid-template-columns: var(--faq-num-col) minmax(0, 1fr);
  gap: clamp(12px, 2.6vw, 34px);
  padding-top: var(--faq-step-space);
  scroll-margin-top: 96px;
}

.page-faq .step:first-child {
  padding-top: clamp(24px, 4vw, 48px);
}

.page-faq .step__index {
  position: relative;
  z-index: 1;
  background: var(--paper);
  align-self: start;
}

.page-faq .step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2.1rem, 5.4vw, 4rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--deep);
  background: var(--paper);
  padding-block: 6px;
}

.page-faq .step__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 3.1vw, 2.15rem);
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: var(--deep);
  margin: 0 0 14px;
}

.page-faq .step__body > p {
  margin: 0 0 14px;
  max-width: 42ch;
  line-height: 1.85;
}

.page-faq .step__aside {
  font-size: 0.9375rem;
  color: var(--deep);
}

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

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

.page-faq .step__note {
  margin: 16px 0 18px;
  padding: 14px 16px;
  max-width: 46ch;
}

.page-faq .step__note p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-faq .copy-btn {
  margin-left: 10px;
  padding: 4px 12px;
  border: 1px solid var(--line);
  background: var(--paper-solid);
  color: var(--deep);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  cursor: pointer;
  vertical-align: baseline;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .copy-btn:hover,
.page-faq .copy-btn:focus-visible {
  border-color: var(--gold);
  color: var(--gold);
}

.page-faq .copy-btn[data-state="copied"] {
  color: var(--clay);
  border-color: var(--clay-light);
}

.page-faq .plain-list,
.page-faq .trap {
  list-style: none;
  margin: 0 0 6px;
  padding: 0;
  max-width: 46ch;
}

.page-faq .plain-list li,
.page-faq .trap li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-faq .plain-list li::before,
.page-faq .trap li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 2px;
  background: var(--gold);
}

.page-faq .trap li::before {
  background: var(--clay);
}

.page-faq .trap li strong {
  color: var(--deep);
}

/* 行牌顺序带 */
.page-faq .flow-strip {
  list-style: none;
  margin: 18px 0 22px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  max-width: 100%;
}

.page-faq .flow-strip__item {
  background: var(--paper);
  padding: 14px 14px 16px;
}

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

.page-faq .flow-strip__name {
  display: block;
  margin: 4px 0 6px;
  font-size: 1rem;
  color: var(--deep);
}

.page-faq .flow-strip__item p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.72;
  color: var(--ink);
}

/* 结算 */
.page-faq .step__split {
  display: grid;
  gap: clamp(18px, 3vw, 34px);
  align-items: start;
  margin-bottom: 8px;
}

.page-faq .step__split .step__body > p,
.page-faq .step__split p {
  max-width: 42ch;
}

.page-faq .step__split .guide-figure {
  margin-top: 0;
}

.page-faq .card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.page-faq .check-steps {
  counter-reset: ck;
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  max-width: 46ch;
}

.page-faq .check-steps li {
  counter-increment: ck;
  position: relative;
  padding-left: 34px;
  margin-bottom: 12px;
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-faq .check-steps li::before {
  content: counter(ck, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.15em;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

/* 问答区 */
.page-faq .faq-section {
  padding: clamp(30px, 5vw, 60px) 0 clamp(24px, 4vw, 48px);
}

.page-faq .faq-columns {
  margin-top: clamp(20px, 3.4vw, 36px);
  column-gap: clamp(22px, 4vw, 46px);
}

.page-faq .faq-group {
  break-inside: avoid;
  -webkit-column-break-inside: avoid;
  page-break-inside: avoid;
  margin: 0 0 32px;
}

.page-faq .faq-group__title {
  display: inline-block;
  margin: 0 0 8px;
  padding-bottom: 6px;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--deep);
  border-bottom: 2px solid var(--gold);
}

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

.page-faq .qa summary {
  cursor: pointer;
  list-style: none;
  position: relative;
  padding: 12px 24px 12px 0;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.65;
  color: var(--ink);
  transition: color var(--dur) var(--ease);
}

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

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

.page-faq .qa summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 10px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--gold);
}

.page-faq .qa[open] summary {
  color: var(--deep);
}

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

.page-faq .qa__body {
  margin: 0 0 14px;
  padding-left: 12px;
  border-left: 2px solid var(--clay);
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--ink);
}

/* 编号索引 */
.page-faq .idx-section {
  padding: clamp(24px, 4vw, 48px) 0 clamp(48px, 7vw, 88px);
}

.page-faq .idx-wrap {
  margin-top: clamp(18px, 3vw, 30px);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .idx-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
}

.page-faq .idx-table thead th {
  text-align: left;
  padding: 10px 12px;
  background: var(--band);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--deep);
  white-space: nowrap;
}

.page-faq .idx-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--band);
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--ink);
}

.page-faq .idx-table tbody tr:nth-child(even) td {
  background: rgba(227, 237, 239, 0.45);
}

.page-faq .idx-table td:first-child {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
  white-space: nowrap;
}

.page-faq .idx-table td:last-child {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--grape);
  white-space: nowrap;
}

/* 收尾 */
.page-faq .guide-cta {
  margin-top: clamp(30px, 5vw, 56px);
  padding: clamp(22px, 3.6vw, 38px);
  background: var(--band);
  display: grid;
  gap: 18px;
}

.page-faq .guide-cta__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.3vw, 1.55rem);
  font-weight: 800;
  color: var(--deep);
}

.page-faq .guide-cta__text {
  margin: 0;
  max-width: 52ch;
  font-size: 0.9375rem;
  line-height: 1.8;
}

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

.page-faq .guide-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (min-width: 700px) {
  .page-faq .flow-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-columns {
    column-count: 2;
  }
}

@media (min-width: 860px) {
  .page-faq {
    --faq-num-col: clamp(96px, 11vw, 148px);
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }

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

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

@media (min-width: 1080px) {
  .page-faq .faq-columns {
    column-count: 3;
  }

  .page-faq .step__body {
    max-width: 72%;
  }

  .page-faq .step__split,
  .page-faq .flow-strip,
  .page-faq .check-steps {
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .quick-jump__list a,
  .page-faq .qa summary,
  .page-faq .copy-btn {
    transition-duration: 120ms;
  }
}
<<<END>>>