.page-faq {
  --faq-hair: rgba(15, 27, 43, .14);
  --faq-soft: rgba(99, 183, 163, .09);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
}

.page-faq .breadcrumb {
  padding: 1.1rem 0 .2rem;
}

.page-faq .faq-hero {
  padding: clamp(1.5rem, 4vw, 3rem) 0 clamp(1.75rem, 3.5vw, 2.75rem);
  border-bottom: 1px solid var(--line-gold);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 1.75rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq h1 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(2rem, 5.2vw, 3.9rem);
  line-height: 1.14;
  letter-spacing: -.015em;
  margin: .55rem 0 1rem;
  color: var(--ink);
}

.page-faq .faq-hero__lead .lede {
  max-width: 44rem;
  color: var(--mist);
  font-size: 1rem;
  line-height: 1.8;
  margin: 0;
}

.page-faq .faq-hero__card {
  background: var(--ink-blue);
  color: var(--paper);
  border: 1px solid var(--ink-blue-2);
  box-shadow: inset 0 0 0 1px rgba(200, 162, 74, .22);
  padding: 1.3rem 1.4rem 1.4rem;
}

.page-faq .faq-hero__card-label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--celadon);
  margin: 0 0 .6rem;
}

.page-faq .faq-hero__card-text {
  margin: 0 0 .8rem;
  font-size: .95rem;
  line-height: 1.7;
  color: var(--paper);
}

.page-faq .faq-hero__card-meta {
  margin: 0 0 1.1rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  line-height: 1.8;
  letter-spacing: .04em;
  color: rgba(245, 239, 228, .72);
  word-break: break-word;
}

.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  padding: 2rem 0 4rem;
}

.page-faq .faq-index {
  border-top: 1px solid var(--line-gold);
  padding-top: 1rem;
}

.page-faq .faq-index__title {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--patina);
  margin: 0 0 .75rem;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1px;
  border-left: 1px solid var(--line-gold);
}

.page-faq .faq-index__link {
  display: block;
  padding: .48rem .9rem;
  margin-left: -1px;
  border-left: 2px solid transparent;
  font-size: .9rem;
  line-height: 1.5;
  color: var(--ink);
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--crimson);
  border-left-color: var(--celadon);
  background: var(--faq-soft);
  outline: none;
}

.page-faq .faq-index__note {
  margin: 1rem 0 0;
  font-size: .8rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-sec {
  border-top: 1px solid var(--line-gold);
  padding-top: 1.75rem;
}

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

.page-faq .faq-sec + .faq-sec {
  margin-top: 2.75rem;
}

.page-faq .faq-sec .section-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.4rem, 3vw, 2.1rem);
  line-height: 1.26;
  letter-spacing: -.01em;
  margin: .45rem 0 .7rem;
  color: var(--ink);
}

.page-faq .faq-sec__intro {
  margin: 0;
  max-width: 46rem;
  font-size: .96rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-sec__tail {
  margin: 1.3rem 0 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-sec__tail a,
.page-faq .faq-steps__text a,
.page-faq .faq-qa__a a {
  color: var(--crimson);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
}

.page-faq .faq-sec__tail a:hover,
.page-faq .faq-steps__text a:hover,
.page-faq .faq-qa__a a:hover,
.page-faq .faq-sec__tail a:focus-visible,
.page-faq .faq-steps__text a:focus-visible,
.page-faq .faq-qa__a a:focus-visible {
  color: var(--ink-blue);
  border-bottom-color: var(--crimson);
  outline: none;
}

/* 三步刻度 */
.page-faq .faq-steps {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.6rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-steps__item {
  position: relative;
  border-top: 1px solid var(--line-gold);
  padding-top: 1.1rem;
}

.page-faq .faq-steps__num {
  display: block;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .18em;
  color: var(--patina);
  margin-bottom: .45rem;
}

.page-faq .faq-steps__title {
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.4;
  margin: 0 0 .45rem;
  color: var(--ink);
}

.page-faq .faq-steps__text {
  margin: 0;
  font-size: .92rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-figure {
  margin: 1.75rem 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--ink-blue-2);
}

.page-faq .faq-figure .media-frame__caption {
  margin-top: .6rem;
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--mist);
}

/* 双栏镜像 */
.page-faq .faq-diff {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  background: var(--gold);
  border: 1px solid var(--ink-blue-2);
  margin-top: 1.5rem;
}

.page-faq .faq-diff__col {
  background: var(--paper-2);
  padding: 1.3rem 1.35rem 1.4rem;
}

.page-faq .faq-diff__col--accent {
  background: #fffdf8;
}

.page-faq .faq-diff__title {
  font-family: var(--font-head);
  font-size: 1.08rem;
  font-weight: 600;
  line-height: 1.4;
  margin: .7rem 0 .2rem;
  color: var(--ink);
}

.page-faq .faq-diff__list {
  list-style: none;
  margin: .7rem 0 .9rem;
  padding: 0;
  display: grid;
  gap: .45rem;
}

.page-faq .faq-diff__list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: .92rem;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .faq-diff__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: .4rem;
  height: .4rem;
  background: var(--patina);
}

.page-faq .faq-diff__note {
  margin: 0;
  font-size: .85rem;
  line-height: 1.72;
  color: var(--mist);
  border-top: 1px dashed rgba(140, 106, 63, .4);
  padding-top: .7rem;
}

/* 换设备 */
.page-faq .faq-device {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.75rem;
  margin-top: 1.5rem;
}

.page-faq .faq-device__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.page-faq .faq-device__step {
  border-left: 2px solid var(--line-gold);
  padding: .1rem 0 .1rem 1rem;
}

.page-faq .faq-device__step:last-child {
  border-left-color: var(--celadon);
}

.page-faq .faq-device__badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .2em;
  color: var(--crimson);
  margin-bottom: .3rem;
}

.page-faq .faq-device__title {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 .35rem;
  color: var(--ink);
}

.page-faq .faq-device__step p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.78;
  color: var(--mist);
}

/* 节奏数据 */
.page-faq .faq-meter {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-gold);
  border: 1px solid var(--ink-blue-2);
  margin-top: 1.5rem;
}

.page-faq .faq-meter__cell {
  background: var(--paper);
  padding: 1rem 1.05rem 1.1rem;
}

.page-faq .faq-meter__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  letter-spacing: .06em;
  color: var(--crimson);
  margin-bottom: .35rem;
}

.page-faq .faq-meter__label {
  display: block;
  font-size: .8rem;
  line-height: 1.6;
  color: var(--mist);
}

/* 取用与求助 */
.page-faq .faq-pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.page-faq .faq-card {
  background: #fffdf8;
  border: 1px solid var(--ink-blue-2);
  padding: 1.25rem 1.3rem 1.35rem;
}

.page-faq .faq-card--dark {
  background: var(--ink-blue);
  border-color: var(--ink-blue-2);
  box-shadow: inset 0 0 0 1px rgba(200, 162, 74, .2);
}

.page-faq .faq-card__title {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.45;
  margin: .65rem 0 .4rem;
  color: var(--ink);
}

.page-faq .faq-card--dark .faq-card__title {
  color: var(--paper);
}

.page-faq .faq-card--dark .faq-diff__list {
  margin-bottom: .9rem;
}

.page-faq .faq-card--dark .faq-diff__list li {
  color: rgba(245, 239, 228, .86);
}

.page-faq .faq-card--dark .faq-diff__list li::before {
  background: var(--gold);
}

.page-faq .faq-channels {
  margin: .8rem 0 0;
  display: grid;
  gap: .55rem;
}

.page-faq .faq-channels__row {
  display: grid;
  grid-template-columns: 4.6rem minmax(0, 1fr);
  gap: .6rem;
  padding-bottom: .55rem;
  border-bottom: 1px dashed rgba(200, 162, 74, .35);
}

.page-faq .faq-channels dt {
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--celadon);
}

.page-faq .faq-channels dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .82rem;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .faq-card__foot {
  margin: 1rem 0 0;
  font-size: .82rem;
  line-height: 1.72;
  color: rgba(245, 239, 228, .68);
}

/* 折叠清单 */
.page-faq .faq-qa__list {
  counter-reset: qa;
  margin-top: 1.5rem;
  border-top: 1px solid var(--faq-hair);
}

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

.page-faq .faq-qa__q {
  display: flex;
  align-items: baseline;
  gap: .85rem;
  list-style: none;
  cursor: pointer;
  position: relative;
  padding: .95rem 2rem .95rem 0;
  transition: background-color .2s var(--ease);
}

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

.page-faq .faq-qa__q::before {
  content: counter(qa, decimal-leading-zero);
  flex: none;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-faq .faq-qa__q::after {
  content: "+";
  position: absolute;
  right: .25rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--crimson);
}

.page-faq .faq-qa[open] .faq-qa__q::after {
  content: "−";
  color: var(--celadon);
}

.page-faq .faq-qa__q:hover {
  background: rgba(15, 27, 43, .035);
}

.page-faq .faq-qa__q:focus-visible {
  outline: 2px solid var(--celadon);
  outline-offset: 2px;
}

.page-faq .faq-qa__qtext {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1rem;
  line-height: 1.6;
  margin: 0;
  color: var(--ink);
}

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

.page-faq .faq-qa__a {
  padding: 0 1.6rem 1.1rem 2.15rem;
}

.page-faq .faq-qa__a p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.82;
  color: var(--mist);
}

@media (min-width: 700px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.2rem;
  }

  .page-faq .faq-steps__item::before {
    content: "";
    position: absolute;
    top: -5px;
    left: 0;
    width: 9px;
    height: 9px;
    background: var(--gold);
    transform: rotate(45deg);
  }

  .page-faq .faq-steps__item:last-child::before {
    background: var(--celadon);
  }

  .page-faq .faq-diff {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-faq .faq-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, .82fr);
    align-items: end;
    gap: clamp(2rem, 5vw, 4.5rem);
  }

  .page-faq .faq-device {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
    gap: clamp(1.5rem, 3vw, 2.5rem);
  }

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

@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-qa__q {
    transition: none;
  }
}
<<<END>>>