.page-faq .kb-hero {
  padding-block: clamp(28px, 6vw, 72px) clamp(32px, 5vw, 60px);
  background:
    radial-gradient(80% 130% at 6% 0%, rgba(25, 224, 210, .10), transparent 60%),
    radial-gradient(70% 110% at 100% 8%, rgba(255, 107, 74, .08), transparent 62%);
  border-bottom: 2px solid var(--line);
}

.page-faq .kb-hero-title {
  margin: 14px 0 18px;
  font-size: clamp(32px, 6.6vw, 62px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--snow);
}

.page-faq .kb-break {
  display: none;
}

.page-faq .kb-hero-lede {
  max-width: 62ch;
  color: var(--mist);
  font-size: clamp(15px, 2.2vw, 17px);
  line-height: 1.8;
}

.page-faq .kb-jump {
  margin-top: 28px;
  padding: 20px;
  background: var(--ink-2);
  border: 2px solid var(--line);
  box-shadow: var(--shadow-hard);
}

.page-faq .coord {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--mist);
  margin: 0;
}

.page-faq .kb-jump-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .kb-jump-list a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--panel);
  border: 2px solid var(--line);
  color: var(--snow);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.4;
  transition: border-color .2s ease, color .2s ease, transform .2s ease;
}

.page-faq .kb-jump-list a:hover,
.page-faq .kb-jump-list a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateX(3px);
}

.page-faq .kb-jump-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--coral);
}

.page-faq .kb-jump-note {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-faq .kb-sec-head {
  max-width: 64ch;
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-faq .kb-sec-head .heading {
  margin: 12px 0 14px;
  font-size: clamp(25px, 4.4vw, 40px);
  line-height: 1.12;
  letter-spacing: -.015em;
  color: var(--snow);
}

.page-faq .kb-sec-lede {
  margin: 0;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.8;
  max-width: 62ch;
}

.page-faq .kb-inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color .2s ease, color .2s ease;
}

.page-faq .kb-inline-link:hover,
.page-faq .kb-inline-link:focus-visible {
  color: var(--coral);
  border-bottom-color: var(--coral);
}

.page-faq .kb-steps,
.page-faq .kb-answers,
.page-faq .kb-trouble,
.page-faq .kb-support {
  scroll-margin-top: 88px;
}

/* ---- 四步路径 ---- */
.page-faq .kb-step-figure {
  margin: 0 0 24px;
}

.page-faq .kb-step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .kb-step {
  display: grid;
  gap: 10px;
  padding: 18px 16px;
  background: var(--ink-2);
  border: 2px solid var(--line);
  border-left: 4px solid var(--cyan);
  transition: border-left-color .2s ease, transform .2s ease;
}

.page-faq .kb-step:hover {
  border-left-color: var(--coral);
  transform: translateX(4px);
}

.page-faq .kb-step-num {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-faq .kb-step-body h3 {
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.45;
  color: var(--snow);
  font-weight: 700;
}

.page-faq .kb-step-body p {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}

/* ---- 问答浏览器 ---- */
.page-faq .kb-browser {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: start;
}

.page-faq .kb-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-faq .kb-index {
  padding: 18px;
  background: var(--ink-2);
  border: 2px solid var(--line);
}

.page-faq .kb-filter-list {
  display: grid;
  gap: 2px;
  margin-top: 14px;
}

.page-faq .kb-filter {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  background: var(--panel);
  border: 2px solid transparent;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.4;
  cursor: pointer;
  transition: color .18s ease, border-color .18s ease, background .18s ease;
}

.page-faq .kb-filter:hover {
  color: var(--snow);
  border-color: var(--line);
}

.page-faq .kb-filter-num,
.page-faq .kb-filter-count {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--line);
}

.page-faq .kb-filter-text {
  text-align: left;
}

.page-faq #kb-f-all:checked ~ .kb-index .kb-filter[for="kb-f-all"],
.page-faq #kb-f-entry:checked ~ .kb-index .kb-filter[for="kb-f-entry"],
.page-faq #kb-f-label:checked ~ .kb-index .kb-filter[for="kb-f-label"],
.page-faq #kb-f-save:checked ~ .kb-index .kb-filter[for="kb-f-save"],
.page-faq #kb-f-trouble:checked ~ .kb-index .kb-filter[for="kb-f-trouble"],
.page-faq #kb-f-support:checked ~ .kb-index .kb-filter[for="kb-f-support"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-faq #kb-f-all:checked ~ .kb-index .kb-filter[for="kb-f-all"] .kb-filter-num,
.page-faq #kb-f-entry:checked ~ .kb-index .kb-filter[for="kb-f-entry"] .kb-filter-num,
.page-faq #kb-f-label:checked ~ .kb-index .kb-filter[for="kb-f-label"] .kb-filter-num,
.page-faq #kb-f-save:checked ~ .kb-index .kb-filter[for="kb-f-save"] .kb-filter-num,
.page-faq #kb-f-trouble:checked ~ .kb-index .kb-filter[for="kb-f-trouble"] .kb-filter-num,
.page-faq #kb-f-support:checked ~ .kb-index .kb-filter[for="kb-f-support"] .kb-filter-num,
.page-faq #kb-f-all:checked ~ .kb-index .kb-filter[for="kb-f-all"] .kb-filter-count,
.page-faq #kb-f-entry:checked ~ .kb-index .kb-filter[for="kb-f-entry"] .kb-filter-count,
.page-faq #kb-f-label:checked ~ .kb-index .kb-filter[for="kb-f-label"] .kb-filter-count,
.page-faq #kb-f-save:checked ~ .kb-index .kb-filter[for="kb-f-save"] .kb-filter-count,
.page-faq #kb-f-trouble:checked ~ .kb-index .kb-filter[for="kb-f-trouble"] .kb-filter-count,
.page-faq #kb-f-support:checked ~ .kb-index .kb-filter[for="kb-f-support"] .kb-filter-count {
  color: var(--ink-2);
}

.page-faq .kb-radio:focus-visible ~ .kb-index .kb-filter {
  outline: 2px dashed var(--cyan);
  outline-offset: 2px;
}

.page-faq .kb-index-link {
  display: block;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--mist);
  text-decoration: none;
  transition: color .2s ease;
}

.page-faq .kb-index-link:hover,
.page-faq .kb-index-link:focus-visible {
  color: var(--cyan);
}

.page-faq .kb-list {
  display: grid;
  gap: 2px;
}

.page-faq #kb-f-entry:checked ~ .kb-list .qa:not([data-cat="entry"]),
.page-faq #kb-f-label:checked ~ .kb-list .qa:not([data-cat="label"]),
.page-faq #kb-f-save:checked ~ .kb-list .qa:not([data-cat="save"]),
.page-faq #kb-f-trouble:checked ~ .kb-list .qa:not([data-cat="trouble"]),
.page-faq #kb-f-support:checked ~ .kb-list .qa:not([data-cat="support"]) {
  display: none;
}

.page-faq .qa {
  background: var(--ink-2);
  border: 2px solid var(--line);
  border-left: 4px solid var(--line);
  transition: border-color .2s ease, background .2s ease;
}

.page-faq .qa[open] {
  background: var(--panel);
  border-left-color: var(--coral);
}

.page-faq .qa-summary {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "tag arrow"
    "q q";
  gap: 8px 12px;
  padding: 16px;
  cursor: pointer;
  list-style: none;
  color: var(--snow);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.55;
}

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

.page-faq .qa-summary::after {
  grid-area: arrow;
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}

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

.page-faq .qa-tag {
  grid-area: tag;
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  padding: 3px 7px;
  border: 1px solid currentColor;
  background: transparent;
  color: var(--cyan);
  white-space: nowrap;
  line-height: 1.4;
}

.page-faq .qa[data-cat="label"] .qa-tag {
  color: var(--coral);
}

.page-faq .qa[data-cat="save"] .qa-tag {
  color: var(--gold);
}

.page-faq .qa[data-cat="trouble"] .qa-tag {
  color: var(--pale);
}

.page-faq .qa[data-cat="support"] .qa-tag {
  color: var(--mist);
}

.page-faq .qa-q {
  grid-area: q;
  min-width: 0;
}

.page-faq .qa-body {
  padding: 14px 16px 18px;
  border-top: 1px solid var(--line);
}

.page-faq .qa-body p {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .kb-list-foot {
  margin: 16px 0 0;
  padding: 14px 16px;
  border: 2px dashed var(--line);
  color: var(--mist);
  font-size: 14px;
  line-height: 1.7;
}

/* ---- 排查流程 ---- */
.page-faq .kb-trouble-figure {
  margin: 0 0 24px;
}

.page-faq .kb-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-top: 2px solid var(--line);
}

.page-faq .kb-flow-item {
  padding: 18px 16px;
  background: var(--ink-2);
  border-left: 4px solid var(--cyan);
}

.page-faq .kb-flow-letter {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .1em;
  color: var(--coral);
}

.page-faq .kb-flow-title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--snow);
}

.page-faq .kb-flow-item p {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}

/* ---- 联系支持 ---- */
.page-faq .kb-support {
  border-top: 2px solid var(--line);
  background: linear-gradient(180deg, rgba(16, 42, 68, .72), rgba(6, 18, 31, 0));
}

.page-faq .kb-support-title {
  margin: 12px 0 14px;
  font-size: clamp(25px, 4.4vw, 40px);
  line-height: 1.12;
  letter-spacing: -.015em;
  color: var(--snow);
}

.page-faq .kb-support-lede {
  margin: 0 0 22px;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .kb-support-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .kb-support-list li {
  padding: 14px 16px;
  background: var(--ink-2);
  border: 2px solid var(--line);
  border-left: 4px solid var(--gold);
}

.page-faq .kb-support-list p {
  margin: 8px 0 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .kb-contact-card {
  margin-top: 22px;
  padding: 22px;
  background: var(--panel);
  border: 2px solid var(--line);
  box-shadow: var(--shadow-hard);
}

.page-faq .kb-contact-list {
  margin: 14px 0 0;
}

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

.page-faq .kb-contact-row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-faq .kb-contact-row dd {
  margin: 0;
  color: var(--snow);
  font-size: 16px;
  line-height: 1.6;
  word-break: break-all;
}

.page-faq .kb-contact-value {
  font-family: var(--font-mono);
  color: var(--cyan);
  user-select: all;
}

.page-faq .kb-contact-note {
  margin: 16px 0 18px;
  padding-left: 12px;
  border-left: 2px solid var(--coral);
  color: var(--mist);
  font-size: 14px;
  line-height: 1.75;
}

/* ---- 断点 ---- */
@media (min-width: 560px) {
  .page-faq .kb-contact-row {
    grid-template-columns: 96px 1fr;
    align-items: baseline;
    gap: 14px;
  }
}

@media (min-width: 720px) {
  .page-faq .kb-break {
    display: block;
  }

  .page-faq .kb-step {
    grid-template-columns: 64px 1fr;
    gap: 20px;
    padding: 22px 24px;
  }

  .page-faq .kb-step-num {
    font-size: 28px;
  }

  .page-faq .qa-summary {
    grid-template-columns: auto 1fr auto;
    grid-template-areas: "tag q arrow";
    align-items: center;
    gap: 14px;
    padding: 18px 20px;
  }

  .page-faq .qa-body {
    padding: 16px 20px 20px;
  }

  .page-faq .kb-flow {
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border-top: none;
    border-left: 2px solid var(--line);
  }

  .page-faq .kb-flow-item {
    border-left: none;
    border-top: 4px solid var(--cyan);
    transition: border-top-color .2s ease;
  }

  .page-faq .kb-flow-item:hover {
    border-top-color: var(--coral);
  }
}

@media (min-width: 900px) {
  .page-faq .kb-jump {
    margin-top: 0;
  }

  .page-faq .kb-browser {
    grid-template-columns: minmax(220px, 280px) 1fr;
    gap: 38px;
  }

  .page-faq .kb-index {
    position: sticky;
    top: 96px;
  }

  .page-faq .kb-contact-card {
    margin-top: 0;
  }
}
<<<END>>>