.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(24px, 4.6vw, 48px) 0 clamp(22px, 3.6vw, 36px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(70% 110% at 88% -10%, rgba(111, 211, 255, 0.16), transparent 62%),
    radial-gradient(60% 100% at -5% 110%, rgba(154, 107, 255, 0.14), transparent 66%),
    var(--void);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 84px 100%;
  opacity: 0.32;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
}

.page-faq .faq-eyebrow {
  margin: 18px 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--aurora);
}

.page-faq .faq-title {
  margin: 0 0 16px;
  max-width: 18em;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(27px, 6.2vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--silver);
  text-wrap: balance;
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 62ch;
  font-family: var(--font-serif);
  font-size: clamp(14.5px, 2vw, 18px);
  line-height: 1.75;
  color: var(--soft);
}

.page-faq .faq-metrics {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  overflow: hidden;
}

.page-faq .faq-metric {
  min-width: 0;
  padding: 13px 13px 14px;
  background: var(--nebula);
}

.page-faq .faq-metric-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(13px, 2vw, 19px);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ice);
  white-space: nowrap;
}

.page-faq .faq-metric-label {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-faq .faq-body {
  padding: clamp(26px, 4.6vw, 52px) 0 clamp(40px, 7vw, 84px);
}

.page-faq .faq-content {
  min-width: 0;
}

/* ---------- 目录 ---------- */
.page-faq .faq-toc {
  position: sticky;
  top: 88px;
  padding: 14px 14px 16px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--aurora);
  border-radius: var(--radius);
  background: var(--glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.page-faq .faq-toc .toc-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

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

.page-faq .faq-toc .toc-list > li {
  margin: 0;
}

.page-faq .faq-toc .toc-link {
  display: block;
  padding: 8px 10px;
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--soft);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.18s ease-out, background-color 0.18s ease-out, border-color 0.18s ease-out;
}

.page-faq .faq-toc .toc-link:hover {
  color: var(--silver);
  background: rgba(111, 211, 255, 0.08);
}

.page-faq .faq-toc .toc-link[aria-current="true"] {
  color: var(--ice);
  border-left-color: var(--ice);
  background: rgba(111, 211, 255, 0.1);
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  margin-top: clamp(34px, 5.5vw, 60px);
  scroll-margin-top: 84px;
}

.page-faq .faq-content > .faq-section:first-child {
  margin-top: 0;
}

.page-faq .faq-section-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 10px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-section-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--aurora);
}

.page-faq .faq-section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 3.4vw, 28px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--silver);
}

.page-faq .faq-intro {
  margin: 0 0 18px;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--soft);
}

.page-faq .faq-inline-link {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-inline-link a {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid var(--line-ice);
}

.page-faq .faq-inline-link a:hover {
  border-bottom-color: var(--ice);
}

/* ---------- 症状卡 ---------- */
.page-faq .faq-symptoms {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-faq .symptom {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(90deg, rgba(111, 211, 255, 0.07), rgba(11, 23, 48, 0.5) 70%);
  text-decoration: none;
  transition: border-color 0.2s ease-out, transform 0.2s ease-out;
}

.page-faq .symptom:hover,
.page-faq .symptom:focus-visible {
  border-color: var(--line-ice);
  transform: translateX(3px);
}

.page-faq .symptom-code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--aurora);
}

.page-faq .symptom-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-faq .symptom-title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--silver);
}

.page-faq .symptom-hint {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--muted);
}

.page-faq .symptom-go {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--ice);
}

/* ---------- 检查清单 ---------- */
.page-faq .checks {
  display: grid;
  gap: 12px;
}

.page-faq .check {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--glass);
  transition: border-color 0.2s ease-out, background-color 0.2s ease-out;
}

.page-faq .check[open] {
  border-color: var(--line-ice);
  background: var(--glass-strong);
}

.page-faq .check-summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 14px;
  min-height: 52px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .check-summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--ice);
}

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

.page-faq .check-num {
  flex: 0 0 auto;
  padding-right: 10px;
  border-right: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--aurora);
}

.page-faq .check-name {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(15px, 2vw, 17px);
  color: var(--silver);
}

.page-faq .check-flag {
  flex: 0 0 auto;
  padding: 3px 7px;
  border: 1px solid var(--warn);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--warn);
  white-space: nowrap;
}

.page-faq .check-flag--odd {
  border-color: var(--aurora);
  color: var(--aurora);
}

.page-faq .check-body {
  padding: 0 14px 16px;
}

.page-faq .check-body p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--soft);
}

.page-faq .check-body ul {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .check-body li {
  position: relative;
  padding-left: 18px;
  font-size: 13.8px;
  line-height: 1.72;
  color: var(--soft);
}

.page-faq .check-body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--ice);
}

.page-faq .check-verdict {
  margin-top: 14px;
  padding: 10px 12px;
  border-left: 2px solid var(--warn);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(255, 138, 61, 0.08);
  font-size: 13.2px;
  line-height: 1.7;
  color: var(--silver);
}

.page-faq .check-verdict--ok {
  border-left-color: var(--ok);
  background: rgba(54, 226, 180, 0.08);
}

.page-faq .check-verdict-label {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 6px;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--warn);
}

.page-faq .check-verdict--ok .check-verdict-label {
  color: var(--ok);
}

/* ---------- 图文分栏 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 30px);
  align-items: start;
}

.page-faq .faq-split-main {
  min-width: 0;
}

.page-faq .faq-figure {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-figure .media-frame {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(150deg, rgba(111, 211, 255, 0.12), rgba(5, 11, 24, 0.9));
}

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

.page-faq .faq-figure .media-caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

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

.page-faq .spec-item {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .spec-key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  line-height: 1.7;
  color: var(--ice);
}

.page-faq .spec-val {
  font-size: 13.8px;
  line-height: 1.72;
  color: var(--soft);
}

/* ---------- 反馈清单 ---------- */
.page-faq .feedback-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .feedback-item {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .feedback-num {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--aurora);
}

.page-faq .feedback-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-faq .feedback-title {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--silver);
}

.page-faq .feedback-desc {
  font-size: 13.2px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-groups {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-faq .faq-group {
  min-width: 0;
  padding: 15px 15px 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(11, 23, 48, 0.55);
}

.page-faq .faq-group-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--silver);
}

.page-faq .faq-group-tag {
  flex: 0 0 auto;
  padding: 2px 7px;
  border: 1px solid rgba(154, 107, 255, 0.45);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--aurora);
  white-space: nowrap;
}

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

.page-faq .qa-q {
  position: relative;
  padding: 11px 24px 11px 0;
  min-height: 44px;
  font-size: 13.6px;
  line-height: 1.55;
  color: var(--soft);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa-q::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ice);
}

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

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

.page-faq .qa-a {
  margin: 0 0 12px;
  padding-left: 12px;
  border-left: 2px solid rgba(111, 211, 255, 0.35);
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 联系 ---------- */
.page-faq .faq-contact {
  padding: clamp(16px, 3vw, 26px);
  border: 1px solid var(--line-ice);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(111, 211, 255, 0.09), rgba(11, 23, 48, 0.72) 58%);
}

.page-faq .contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin: 0;
}

.page-faq .contact-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.page-faq .contact-row dt {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .contact-row dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--silver);
  overflow-wrap: anywhere;
}

.page-faq .contact-row dd.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}

.page-faq .contact-tip {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .contact-tip a {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid var(--line-ice);
}

.page-faq .faq-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

/* ---------- 返回顶部 ---------- */
.page-faq .faq-top {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 30;
  min-height: 44px;
  padding: 10px 15px;
  border: 1px solid var(--line-ice);
  border-radius: 999px;
  background: var(--glass-strong);
  color: var(--silver);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  cursor: pointer;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.page-faq .faq-top:hover {
  border-color: var(--ice);
  color: var(--ice);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .contact-row {
    grid-template-columns: 116px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-faq .faq-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 18px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-faq .faq-split--reverse {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  }

  .page-faq .faq-split--reverse .faq-split-main {
    order: 2;
  }

  .page-faq .faq-split--reverse .faq-figure {
    order: 1;
  }
}

@media (max-width: 999px) {
  .page-faq .faq-toc {
    position: sticky;
    top: 62px;
    z-index: 6;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    overflow-x: auto;
    border-left: 1px solid var(--line);
    border-top: 2px solid var(--aurora);
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .page-faq .faq-toc::-webkit-scrollbar {
    display: none;
  }

  .page-faq .faq-toc .toc-title {
    flex: 0 0 auto;
    margin: 0;
    color: var(--aurora);
  }

  .page-faq .faq-toc .toc-list {
    display: flex;
    gap: 8px;
    flex: 0 0 auto;
  }

  .page-faq .faq-toc .toc-list > li {
    flex: 0 0 auto;
  }

  .page-faq .faq-toc .toc-link {
    padding: 6px 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    font-size: 13px;
    white-space: nowrap;
  }

  .page-faq .faq-toc .toc-link[aria-current="true"] {
    border-color: var(--ice);
    border-left-color: var(--ice);
  }
}

@media (max-width: 380px) {
  .page-faq .spec-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .page-faq .check-summary {
    flex-wrap: wrap;
  }

  .page-faq .check-flag {
    order: 3;
  }
}
<<<END>>>