.page-faq {
  --faq-pad: clamp(1.6rem, 5vw, 3.6rem);
  --faq-gap: clamp(1rem, 3vw, 1.6rem);
}

.page-faq .faq-hero {
  display: grid;
  gap: clamp(1.4rem, 4vw, 2.8rem);
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(1.4rem, 5vw, 3.2rem) var(--gutter) clamp(1.8rem, 5vw, 3rem);
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-hero__label {
  margin: .9rem 0 .7rem;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--sans);
  font-weight: 900;
  font-size: clamp(1.85rem, 6vw, 3.15rem);
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--paper);
  max-width: 15em;
}

.page-faq .faq-hero__lead {
  margin: 1rem 0 0;
  max-width: 36em;
  font-size: clamp(.95rem, 2.4vw, 1.06rem);
  line-height: 1.75;
  color: var(--mist-dim);
}

.page-faq .faq-jumps {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin-top: 1.5rem;
}

.page-faq .faq-jump {
  display: inline-block;
  padding: .34rem .78rem;
  border: 1px solid var(--hairline);
  border-radius: var(--r-pill);
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

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

.page-faq .faq-hero__visual {
  border: 1px solid var(--hairline);
  border-radius: var(--r-card);
  background: var(--ink-800);
  padding: .6rem;
  overflow: hidden;
}

.page-faq .faq-diagram {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-sec {
  max-width: var(--shell);
  margin-inline: auto;
  padding: var(--faq-pad) var(--gutter) 0;
}

.page-faq .faq-sec:last-of-type {
  padding-bottom: var(--faq-pad);
}

.page-faq .faq-banner {
  margin-top: 1.3rem;
  border: 1px solid var(--hairline);
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--ink-800);
}

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

/* ---------- 分类标签 ---------- */
.page-faq .faq-tabs {
  margin-top: 1.4rem;
  border: 1px solid var(--hairline);
  border-radius: var(--r-card);
  background: var(--ink-800);
  padding: clamp(.9rem, 3vw, 1.4rem);
}

.page-faq .faq-tabs__bar {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  padding-bottom: .9rem;
  border-bottom: 1px solid var(--hairline-soft);
}

.page-faq .faq-tabs__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .faq-tab {
  display: inline-flex;
  align-items: baseline;
  gap: .4rem;
  padding: .45rem .82rem;
  border: 1px solid var(--hairline);
  border-radius: var(--r-pill);
  background: transparent;
  font-size: .86rem;
  color: var(--mist);
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-tab__count {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .02em;
  color: var(--line);
}

.page-faq .faq-tab:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-faq .faq-tabs__input:checked + .faq-tab {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--ink-900);
  font-weight: 700;
}

.page-faq .faq-tabs__input:checked + .faq-tab .faq-tab__count {
  color: var(--signal);
}

.page-faq .faq-tabs__input:focus-visible + .faq-tab {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-panel {
  display: none;
  padding-top: 1.1rem;
}

.page-faq .faq-tabs__input:nth-of-type(1):checked ~ .faq-panels > .faq-panel:nth-child(1),
.page-faq .faq-tabs__input:nth-of-type(2):checked ~ .faq-panels > .faq-panel:nth-child(2),
.page-faq .faq-tabs__input:nth-of-type(3):checked ~ .faq-panels > .faq-panel:nth-child(3),
.page-faq .faq-tabs__input:nth-of-type(4):checked ~ .faq-panels > .faq-panel:nth-child(4),
.page-faq .faq-tabs__input:nth-of-type(5):checked ~ .faq-panels > .faq-panel:nth-child(5),
.page-faq .faq-tabs__input:nth-of-type(6):checked ~ .faq-panels > .faq-panel:nth-child(6) {
  display: block;
}

.page-faq .faq-panel__lead {
  margin: 0;
  max-width: 46em;
  font-size: .95rem;
  line-height: 1.75;
  color: var(--mist-dim);
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-chip {
  padding: .26rem .55rem;
  border: 1px dashed var(--hairline);
  border-radius: var(--r-sm);
  background: rgba(27, 45, 69, .55);
  font-family: var(--mono);
  font-size: .71rem;
  letter-spacing: .02em;
  color: var(--mist);
}

.page-faq .faq-note {
  display: block;
  margin-top: 1.5rem;
  border-left: 2px solid var(--cyan);
  padding: .2rem 0 .2rem .9rem;
  font-size: .88rem;
  line-height: 1.8;
  color: var(--mist-dim);
}

.page-faq .faq-note--plain {
  border-left-color: var(--line);
}

.page-faq .faq-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 224, 207, .4);
}

.page-faq .faq-note a:hover,
.page-faq .faq-note a:focus-visible {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

/* ---------- 两步排查 ---------- */
.page-faq .faq-step {
  margin-top: .9rem;
  border: 1px solid var(--hairline);
  border-radius: var(--r-card);
  background: var(--ink-800);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-step:hover {
  border-color: rgba(47, 224, 207, .5);
  transform: translateY(-2px);
}

.page-faq .faq-step__summary {
  display: flex;
  align-items: baseline;
  gap: .8rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.5;
}

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

.page-faq .faq-step__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--mono);
  font-weight: 400;
  color: var(--cyan);
}

.page-faq .faq-step[open] .faq-step__summary::after {
  content: "–";
  color: var(--signal);
}

.page-faq .faq-step__num {
  font-family: var(--mono);
  font-size: .95rem;
  color: var(--signal);
  letter-spacing: .04em;
}

.page-faq .faq-step__body {
  padding: 0 1.1rem 1.2rem;
  border-top: 1px solid var(--hairline-soft);
  margin-top: .1rem;
}

.page-faq .faq-step__body p {
  margin: 1rem 0 0;
  font-size: .94rem;
  line-height: 1.78;
  color: var(--mist-dim);
}

.page-faq .faq-list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-list li {
  position: relative;
  padding-left: 1.1rem;
  margin-top: .5rem;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: .42rem;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 查阅准备 ---------- */
.page-faq .faq-prep {
  display: grid;
  gap: var(--faq-gap);
  margin-top: 1.5rem;
}

.page-faq .faq-prep__item {
  border-top: 2px solid var(--line);
  padding-top: .85rem;
}

.page-faq .faq-prep__num {
  margin: 0;
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--signal);
}

.page-faq .faq-prep__title {
  margin: .4rem 0 .35rem;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-prep__item p:last-child {
  margin: 0;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--mist-dim);
}

/* ---------- 入口对照 ---------- */
.page-faq .faq-index-wrap {
  margin-top: 1.5rem;
  border: 1px solid var(--hairline);
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--ink-800);
}

.page-faq .faq-index__table {
  width: 100%;
  border-collapse: collapse;
}

.page-faq .faq-index__table th,
.page-faq .faq-index__table td {
  text-align: left;
  vertical-align: top;
  padding: .85rem 1rem;
  border-bottom: 1px solid var(--hairline-soft);
  font-size: .9rem;
  line-height: 1.7;
}

.page-faq .faq-index__table thead th {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cyan);
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-index__table tbody th {
  color: var(--paper);
  font-weight: 700;
  white-space: nowrap;
}

.page-faq .faq-index__table tbody td {
  color: var(--mist-dim);
}

.page-faq .faq-index__table tbody tr:last-child th,
.page-faq .faq-index__table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-copy-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .7rem;
  margin-top: 1.2rem;
}

.page-faq .copy-btn {
  font-size: .78rem;
}

/* ---------- 下载确认（纸面层） ---------- */
.page-faq .faq-paper {
  background: var(--paper);
  color: var(--ink-900);
  border-radius: var(--r-card);
  padding: clamp(1.3rem, 4vw, 2.6rem);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .28);
}

.page-faq .faq-paper .section__title {
  color: var(--ink-900);
}

.page-faq .faq-paper .section__desc {
  color: rgba(11, 22, 38, .74);
}

.page-faq .faq-paper .section__num {
  color: var(--signal);
}

.page-faq .faq-checks {
  display: grid;
  gap: 1.1rem;
  margin-top: 1.6rem;
}

.page-faq .faq-check {
  border-top: 2px solid rgba(11, 22, 38, .82);
  padding-top: .8rem;
}

.page-faq .faq-check__num {
  margin: 0;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--signal);
}

.page-faq .faq-check__title {
  margin: .4rem 0 .4rem;
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--ink-900);
}

.page-faq .faq-check p:last-child {
  margin: 0;
  font-size: .92rem;
  line-height: 1.75;
  color: rgba(11, 22, 38, .74);
}

.page-faq .faq-paper__link {
  margin: 1.6rem 0 0;
}

.page-faq .faq-paper__link--end {
  margin-top: 1.6rem;
}

/* ---------- 咨询 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: var(--faq-gap);
  margin-top: 1.5rem;
}

.page-faq .faq-contact__item {
  display: flex;
  flex-direction: column;
  gap: .45rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--hairline);
  border-radius: var(--r-card);
  background: var(--ink-800);
}

.page-faq .faq-contact__label {
  margin: 0;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-contact__value {
  margin: 0;
  font-family: var(--mono);
  font-size: .95rem;
  letter-spacing: .01em;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .faq-contact__value--text {
  font-family: var(--sans);
  font-size: .92rem;
}

.page-faq .faq-contact__hint {
  margin: 0;
  font-size: .82rem;
  line-height: 1.65;
  color: var(--mist);
}

.page-faq .faq-contact .copy-btn {
  align-self: flex-start;
  margin-top: .15rem;
}

@media (min-width: 760px) {
  .page-faq .faq-prep {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-checks {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.4rem;
  }

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

@media (max-width: 719px) {
  .page-faq .faq-index__table thead {
    display: none;
  }

  .page-faq .faq-index__table tbody tr {
    display: block;
    padding: .9rem 1rem;
    border-bottom: 1px solid var(--hairline-soft);
  }

  .page-faq .faq-index__table tbody tr:last-child {
    border-bottom: 0;
  }

  .page-faq .faq-index__table tbody th,
  .page-faq .faq-index__table tbody td {
    display: grid;
    grid-template-columns: 5.4em 1fr;
    gap: .6rem;
    padding: .2rem 0;
    border: 0;
    white-space: normal;
  }

  .page-faq .faq-index__table tbody th {
    color: var(--paper);
    padding-bottom: .45rem;
  }

  .page-faq .faq-index__table tbody th::before {
    content: "场景";
    font-family: var(--mono);
    font-size: .68rem;
    letter-spacing: .1em;
    color: var(--signal);
    align-self: center;
  }

  .page-faq .faq-index__table tbody td::before {
    content: attr(data-label);
    font-family: var(--mono);
    font-size: .68rem;
    letter-spacing: .06em;
    color: var(--cyan);
    align-self: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: 7fr 5fr;
    align-items: center;
  }

  .page-faq .faq-tabs {
    padding: 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump,
  .page-faq .faq-tab,
  .page-faq .faq-step {
    transition: none;
  }

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