.page-faq {
  --faq-radius: 14px;
  --faq-gap: 1rem;
  --faq-dark-line: rgba(255, 255, 255, .16);
  background: var(--paper);
  color: var(--ink);
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

/* 面包屑 */
.page-faq .breadcrumb {
  padding-top: 1rem;
  padding-bottom: .5rem;
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  padding: 2rem 0 2.4rem;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -18%;
  bottom: -45%;
  width: 78%;
  height: 130%;
  background: linear-gradient(150deg, rgba(23, 224, 206, .26), rgba(23, 224, 206, 0) 68%);
  transform: rotate(-13deg);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 68px;
  height: 4px;
  background: var(--coral);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 62rem;
}

.page-faq .faq-hero__eyebrow {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin: 0 0 .7rem;
}

.page-faq .faq-hero__title {
  margin: 0 0 1rem;
  font-size: clamp(1.85rem, 6.4vw, 3.4rem);
  line-height: 1.18;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 40rem;
  color: rgba(251, 252, 255, .82);
  font-size: clamp(.95rem, 2.2vw, 1.06rem);
  line-height: 1.75;
}

.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  list-style: none;
  margin: 1.3rem 0 0;
  padding: 0;
}

.page-faq .faq-hero__chips li {
  border: 1px solid var(--faq-dark-line);
  border-radius: 999px;
  padding: .3rem .75rem;
  font-size: .72rem;
  color: var(--cyan);
  letter-spacing: .04em;
}

/* 章节标题组 */
.page-faq .faq-section-head {
  display: grid;
  gap: .45rem;
  margin-bottom: 1.4rem;
}

.page-faq .faq-section-head h2 {
  margin: 0;
  font-size: clamp(1.45rem, 3.6vw, 2.15rem);
  line-height: 1.25;
  letter-spacing: -.015em;
}

.page-faq .faq-section-head p {
  margin: 0;
  max-width: 44rem;
  color: var(--muted);
  font-size: .94rem;
  line-height: 1.7;
}

/* 现象选择器 */
.page-faq .faq-pick__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem;
}

.page-faq .faq-pick__card {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  padding: .95rem .85rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
  box-shadow: var(--shadow-card);
  transition: transform .24s var(--ease), border-color .24s var(--ease), box-shadow .24s var(--ease);
}

.page-faq .faq-pick__card:hover,
.page-faq .faq-pick__card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--cyan);
  box-shadow: var(--shadow-lift);
}

.page-faq .faq-pick__icon {
  width: 30px;
  height: 30px;
  color: var(--cyan-ink);
  margin-bottom: .2rem;
}

.page-faq .faq-pick__label {
  font-weight: 700;
  font-size: .95rem;
  line-height: 1.4;
}

.page-faq .faq-pick__desc {
  color: var(--muted);
  font-size: .78rem;
  line-height: 1.55;
}

.page-faq .faq-pick__figure {
  margin: 1.4rem 0 0;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

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

/* 手风琴主体区 */
.page-faq .faq-index {
  border-left: 2px solid var(--line);
  padding-left: .85rem;
}

.page-faq .faq-index__title {
  margin: 0 0 .7rem;
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0 0 1.4rem;
  padding: 0;
  display: grid;
  gap: .1rem;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: .55rem;
  padding: .4rem .35rem;
  border-radius: 8px;
  color: var(--indigo-700);
  text-decoration: none;
  font-size: .9rem;
  transition: background .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--mist);
  color: var(--ink);
}

.page-faq .faq-index__letter {
  color: var(--cyan-ink);
  font-size: .74rem;
}

.page-faq .faq-handbook__head {
  margin-bottom: 1.6rem;
}

.page-faq .faq-group {
  scroll-margin-top: 6rem;
  margin-top: 2.2rem;
}

.page-faq .faq-group:first-of-type {
  margin-top: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: .55rem;
  padding-bottom: .5rem;
  border-bottom: 2px solid var(--ink);
  margin-bottom: .2rem;
}

.page-faq .faq-group__letter {
  color: var(--cyan-ink);
  font-size: .78rem;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: 1.12rem;
  letter-spacing: -.01em;
}

.page-faq .faq-group__note {
  margin: .8rem 0 .2rem;
  padding-left: .7rem;
  border-left: 3px solid var(--cyan);
  color: var(--muted);
  font-size: .86rem;
  line-height: 1.65;
}

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

.page-faq .accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .85rem .15rem;
  background: none;
  border: 0;
  text-align: left;
  font: inherit;
  font-size: .95rem;
  color: var(--ink);
  cursor: pointer;
  transition: color .2s var(--ease);
}

.page-faq .accordion__trigger:hover,
.page-faq .accordion__trigger:focus-visible {
  color: var(--indigo-700);
}

.page-faq .accordion__num {
  flex: none;
  font-size: .72rem;
  color: var(--muted);
  letter-spacing: .04em;
}

.page-faq .accordion__question {
  flex: 1 1 auto;
  font-weight: 600;
  line-height: 1.5;
}

.page-faq .accordion__icon {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
}

.page-faq .accordion__icon::before,
.page-faq .accordion__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 13px;
  height: 2px;
  background: var(--coral);
  border-radius: 2px;
  transform: translate(-50%, -50%);
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.page-faq .accordion__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .accordion__item[data-open] .accordion__icon::after {
  transform: translate(-50%, -50%) rotate(0deg);
  opacity: 0;
}

.page-faq .accordion__panel-inner {
  padding: 0 .15rem 1rem 2.1rem;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .accordion__panel-inner p {
  margin: 0 0 .55rem;
}

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

.page-faq .faq-do {
  display: flex;
  gap: .55rem;
  align-items: baseline;
  padding: .5rem .7rem;
  background: var(--mist);
  border-left: 3px solid var(--cyan);
  border-radius: 0 8px 8px 0;
  color: var(--ink);
  font-size: .86rem;
}

.page-faq .faq-do__tag {
  flex: none;
  font-size: .7rem;
  color: var(--cyan-ink);
  letter-spacing: .06em;
}

.page-faq .faq-handbook__more {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin: 2rem 0 0;
}

/* 宽度对照表 */
.page-faq .faq-width__figure {
  margin: 0 0 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  overflow: hidden;
  background: var(--paper);
}

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

.page-faq .faq-width__table {
  width: 100%;
  border-collapse: collapse;
  font-size: .86rem;
  background: var(--paper);
  min-width: 32rem;
}

.page-faq .faq-width__table th,
.page-faq .faq-width__table td {
  padding: .7rem .65rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  line-height: 1.6;
}

.page-faq .faq-width__table thead th {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--indigo-700);
  background: var(--mist);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-width__table tbody tr {
  transition: background .2s var(--ease);
}

.page-faq .faq-width__table tbody tr:hover {
  background: var(--mist);
}

.page-faq .data-table__mark {
  font-weight: 600;
}

.page-faq .data-table__mark::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  margin-right: .4rem;
  vertical-align: .08em;
}

.page-faq .data-table__mark--ok {
  color: var(--cyan-ink);
}

.page-faq .data-table__mark--ok::before {
  background: var(--cyan);
}

.page-faq .data-table__mark--fix {
  color: var(--coral);
}

.page-faq .data-table__mark--fix::before {
  background: var(--coral);
}

.page-faq .faq-width__note {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: .84rem;
  line-height: 1.7;
}

/* 三步自助修复 */
.page-faq .faq-fix__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-faq .faq-fix__step {
  position: relative;
  padding: 1.1rem 1rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--paper);
  box-shadow: var(--shadow-card);
}

.page-faq .faq-fix__num {
  display: block;
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1;
  color: var(--coral);
  letter-spacing: -.02em;
  margin-bottom: .55rem;
}

.page-faq .faq-fix__step-title {
  margin: 0 0 .4rem;
  font-size: 1.02rem;
}

.page-faq .faq-fix__step p {
  margin: 0;
  color: var(--muted);
  font-size: .88rem;
  line-height: 1.7;
}

/* 联系前准备 */
.page-faq .faq-prep__inner {
  display: grid;
  gap: 1.6rem;
}

.page-faq .faq-prep__text h2 {
  margin: 0 0 .6rem;
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  line-height: 1.28;
}

.page-faq .faq-prep__text > p {
  margin: 0;
  color: var(--muted);
  font-size: .94rem;
  line-height: 1.75;
}

.page-faq .faq-prep__list {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  gap: .6rem;
}

.page-faq .faq-prep__list li {
  display: grid;
  gap: .2rem;
  padding: .7rem .85rem;
  border-left: 2px solid var(--cyan);
  background: var(--mist);
  border-radius: 0 10px 10px 0;
}

.page-faq .faq-prep__label {
  font-weight: 700;
  font-size: .9rem;
}

.page-faq .faq-prep__sample {
  font-size: .76rem;
  color: var(--muted);
  line-height: 1.6;
}

.page-faq .faq-prep__more {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
  margin: 1.1rem 0 0;
  font-size: .86rem;
}

.page-faq .faq-prep__link {
  color: var(--cyan-ink);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
}

.page-faq .faq-prep__link:hover,
.page-faq .faq-prep__link:focus-visible {
  color: var(--indigo-700);
}

.page-faq .faq-prep__card {
  padding: 1.2rem 1.1rem 1.3rem;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--indigo-700);
  color: var(--paper);
  box-shadow: var(--shadow-lift);
}

.page-faq .faq-prep__card .card__eyebrow {
  margin: 0 0 .8rem;
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-prep__contact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .6rem;
}

.page-faq .faq-prep__contact li {
  display: grid;
  gap: .18rem;
  padding-bottom: .6rem;
  border-bottom: 1px solid var(--faq-dark-line);
  font-size: .9rem;
  line-height: 1.6;
  word-break: break-word;
}

.page-faq .faq-prep__contact li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-prep__key {
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-faq .faq-prep__note {
  margin: 1rem 0 1.2rem;
  font-size: .82rem;
  line-height: 1.7;
  color: rgba(251, 252, 255, .78);
}

.page-faq .faq-prep__card .button {
  display: inline-block;
}

/* 响应式 */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 2.8rem 0 3.2rem;
  }

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

  .page-faq .faq-pick__card {
    padding: 1.1rem 1rem 1.25rem;
  }

  .page-faq .faq-pick__desc {
    font-size: .82rem;
  }

  .page-faq .accordion__trigger {
    font-size: 1rem;
    padding: 1rem .2rem;
  }

  .page-faq .accordion__panel-inner {
    padding-left: 2.6rem;
    font-size: .93rem;
  }
}

@media (min-width: 920px) {
  .page-faq .faq-index {
    position: sticky;
    top: 6rem;
    align-self: start;
  }

  .page-faq .faq-index__list {
    margin-bottom: 0;
  }

  .page-faq .faq-fix__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.6rem;
  }

  .page-faq .faq-fix__step:not(:last-child)::after {
    content: "";
    position: absolute;
    right: -1.4rem;
    top: 3.1rem;
    width: 1.2rem;
    height: 2px;
    background: var(--cyan);
    transform: rotate(-16deg);
    transform-origin: left center;
  }

  .page-faq .faq-prep__inner {
    grid-template-columns: 1.05fr .95fr;
    gap: 2.4rem;
    align-items: start;
  }

  .page-faq .faq-width__table {
    min-width: 0;
    font-size: .9rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-pick__card,
  .page-faq .accordion__icon::before,
  .page-faq .accordion__icon::after,
  .page-faq .faq-width__table tbody tr,
  .page-faq .faq-index__link {
    transition: none;
  }

  .page-faq .faq-pick__card:hover,
  .page-faq .faq-pick__card:focus-visible {
    transform: none;
  }
}
<<<END>>>