.page-faq {
  background: var(--ink-900);
  color: var(--sand);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 24px 0 44px;
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(92, 242, 208, 0.10), transparent 62%),
    radial-gradient(90% 80% at -10% 110%, rgba(36, 28, 69, 0.85), transparent 66%),
    var(--ink-900);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 26px;
  margin-top: 26px;
}

.page-faq .faq-index {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
}

.page-faq .faq-index__item a {
  display: inline-block;
  padding: 7px 11px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-index__item a:hover,
.page-faq .faq-index__item a:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-hero .display-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(29px, 6vw, 54px);
  line-height: 1.16;
  letter-spacing: 0.005em;
  color: var(--sand);
}

.page-faq .faq-hero .lede {
  max-width: 60ch;
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-sub {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 34px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-faq .faq-sub::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--cyan);
}

.page-faq .diag-list {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.page-faq .diag-card {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 18px 16px 16px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--cyan);
  background: var(--ink-800);
  color: var(--sand);
  text-decoration: none;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-faq .diag-card--favorites {
  border-top-color: var(--amber);
  background: var(--indigo);
}

.page-faq .diag-card--query {
  border-top-color: rgba(242, 235, 221, 0.55);
  background: linear-gradient(165deg, rgba(90, 31, 46, 0.92), rgba(6, 26, 20, 0.96));
}

.page-faq .diag-card:hover,
.page-faq .diag-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--cyan);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.42);
}

.page-faq .diag-card:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .diag-card__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-faq .diag-card__title {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--sand);
}

.page-faq .diag-card__text {
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .diag-card__go {
  margin-top: auto;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

/* ---------- 正文布局 ---------- */
.page-faq .faq-main {
  padding: 8px 0 64px;
  background: var(--ink-900);
}

.page-faq .faq-layout {
  display: grid;
  gap: 26px;
}

.page-faq .faq-rail {
  display: none;
}

.page-faq .faq-group {
  padding: 30px 0 34px;
  border-top: 1px solid var(--line);
  scroll-margin-top: 76px;
}

.page-faq .faq-group:first-child {
  border-top: none;
  padding-top: 12px;
}

.page-faq .faq-group__head {
  display: grid;
  gap: 8px;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 3.6vw, 32px);
  font-weight: 700;
  line-height: 1.26;
  color: var(--sand);
}

.page-faq .faq-group__lede {
  max-width: 62ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-group__body {
  margin-top: 20px;
}

/* ---------- 流程图 ---------- */
.page-faq .device-diagram {
  margin-bottom: 20px;
  padding: 12px 10px 6px;
  border: 1px solid var(--line);
  background: rgba(12, 43, 33, 0.5);
}

.page-faq .device-flow {
  display: block;
  width: 100%;
  height: auto;
  max-height: 190px;
  color: var(--line);
}

.page-faq .device-flow rect,
.page-faq .device-flow line,
.page-faq .device-flow path {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}

.page-faq .device-flow .device-flow__head {
  fill: var(--cyan);
  stroke: none;
}

.page-faq .device-flow text {
  fill: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
}

/* ---------- 三步流程 ---------- */
.page-faq .steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .steps li {
  position: relative;
  padding: 15px 16px 16px 16px;
  border-left: 2px solid var(--line);
  background: rgba(12, 43, 33, 0.55);
}

.page-faq .steps li::before {
  counter-increment: faqstep;
  content: "0" counter(faqstep);
  display: block;
  margin-bottom: 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .step__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--sand);
}

.page-faq .step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 20px 0 0;
}

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

.page-faq .faq-figure__cap {
  margin-top: 9px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa summary {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  list-style: none;
  cursor: pointer;
  padding: 15px 0 15px 15px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--sand);
}

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

.page-faq .qa summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  bottom: 15px;
  width: 2px;
  background: var(--line);
  transition: background var(--dur) var(--ease);
}

.page-faq .qa summary::after {
  content: "+";
  margin-left: auto;
  padding-left: 12px;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--cyan);
}

.page-faq .qa[open] summary::before {
  background: var(--cyan);
}

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

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

.page-faq .qa__a {
  margin: 0;
  padding: 0 0 18px 15px;
  max-width: 64ch;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(242, 235, 221, 0.86);
}

/* ---------- 企业分区 ---------- */
.page-faq .faq-group--enterprise {
  padding: 26px 16px 28px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--wine);
  background: linear-gradient(160deg, rgba(36, 28, 69, 0.9), rgba(12, 43, 33, 0.92));
}

.page-faq .faq-group--enterprise .qa {
  border-bottom-color: rgba(155, 184, 173, 0.28);
}

/* ---------- 移动端阅读分区 ---------- */
.page-faq .faq-group--mobile {
  padding: 26px 16px 28px;
  border: none;
  background: var(--sand);
  color: var(--ink-900);
}

.page-faq .faq-group--mobile .faq-group__title {
  color: var(--ink-900);
}

.page-faq .faq-group--mobile .faq-group__num {
  color: var(--wine);
}

.page-faq .faq-group--mobile .faq-group__lede {
  color: rgba(6, 26, 20, 0.78);
}

.page-faq .mobile-split {
  display: grid;
  gap: 20px;
}

.page-faq .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .check-list li {
  padding: 12px 0 12px 14px;
  border-left: 2px solid rgba(6, 26, 20, 0.28);
}

.page-faq .check-list strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-900);
}

.page-faq .check-list span {
  display: block;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(6, 26, 20, 0.78);
}

.page-faq .mobile-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(6, 26, 20, 0.7);
}

.page-faq .faq-group--mobile .faq-figure {
  margin: 0;
}

.page-faq .faq-group--mobile .faq-figure img {
  border-color: rgba(6, 26, 20, 0.25);
}

.page-faq .faq-group--mobile .faq-figure__cap {
  color: rgba(6, 26, 20, 0.66);
}

.page-faq .faq-group--mobile .qa {
  border-bottom-color: rgba(6, 26, 20, 0.18);
}

.page-faq .faq-group--mobile .qa summary {
  color: var(--ink-900);
}

.page-faq .faq-group--mobile .qa summary::before {
  background: rgba(6, 26, 20, 0.22);
}

.page-faq .faq-group--mobile .qa summary::after {
  color: var(--ink-800);
}

.page-faq .faq-group--mobile .qa[open] summary::before {
  background: var(--ink-800);
}

.page-faq .faq-group--mobile .qa__a {
  color: rgba(6, 26, 20, 0.8);
}

.page-faq .faq-group--mobile .text-link {
  color: var(--wine);
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-support {
  margin-top: 34px;
  padding: 26px 16px 24px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--cyan);
  background: var(--ink-800);
  scroll-margin-top: 76px;
}

.page-faq .support-contact {
  margin-top: 20px;
  display: grid;
  gap: 0;
}

.page-faq .contact-line {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .contact-line__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-faq .contact-line__val {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--sand);
  word-break: break-word;
}

.page-faq .support-note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .text-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(92, 242, 208, 0.45);
}

.page-faq .text-link:hover,
.page-faq .text-link:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-faq .text-link:focus-visible,
.page-faq .faq-index__item a:focus-visible,
.page-faq .faq-rail__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 700px) {
  .page-faq .diag-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .support-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 28px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 30px 0 56px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

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

  .page-faq .faq-index__item a {
    display: block;
    padding: 8px 0 8px 12px;
    border: none;
    border-left: 2px solid var(--line);
    white-space: normal;
    line-height: 1.5;
  }

  .page-faq .faq-index__item a:hover {
    border-left-color: var(--cyan);
  }

  .page-faq .faq-layout {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-rail {
    display: block;
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-rail__title {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    color: var(--mist);
  }

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

  .page-faq .faq-rail__link {
    display: block;
    padding: 9px 0 9px 12px;
    border-left: 2px solid var(--line);
    font-size: 13px;
    line-height: 1.5;
    color: var(--sand);
    text-decoration: none;
    transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
  }

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

  .page-faq .faq-group {
    padding: 36px 0 40px;
  }

  .page-faq .faq-group--enterprise,
  .page-faq .faq-group--mobile,
  .page-faq .faq-support {
    padding: 30px 28px 30px;
  }

  .page-faq .mobile-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 28px;
    align-items: start;
  }

  .page-faq .faq-group--mobile .faq-figure--tall {
    margin-top: 4px;
  }
}
<<<END>>>