.page-faq {
  --faq-gap: clamp(20px, 4vw, 42px);
  --faq-pad: clamp(48px, 8vw, 104px);
  background: var(--ink);
  color: var(--mist);
  font-family: var(--font-body);
}

.page-faq a {
  color: var(--lake-light);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline-strong);
}

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

.page-faq h1,
.page-faq h2,
.page-faq h3 {
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin: 0;
}

.page-faq .mono {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 5vw, 60px) 0 clamp(36px, 6vw, 72px);
  background:
    radial-gradient(120% 90% at 82% 0%, rgba(107, 79, 168, 0.42), transparent 62%),
    radial-gradient(90% 70% at 0% 12%, rgba(27, 143, 168, 0.32), transparent 58%),
    var(--ink);
  border-bottom: 1px solid var(--hairline);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(95, 211, 228, 0.07) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(0deg, rgba(95, 211, 228, 0.05) 0 1px, transparent 1px 64px);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 78%);
}

.page-faq .faq-hero > .container {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumb {
  margin-bottom: clamp(22px, 4vw, 42px);
  font-size: 13px;
}

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--rock);
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--violet-lift);
}

.page-faq .breadcrumb a {
  color: var(--rock);
  border-bottom-color: transparent;
}

.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lake-light);
  margin: 0 0 16px;
}

.page-faq .faq-hero h1 {
  font-size: clamp(34px, 7.6vw, 82px);
  max-width: 17em;
  text-wrap: balance;
}

.page-faq .faq-hero__lead {
  margin: clamp(18px, 3vw, 28px) 0 0;
  max-width: 40ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.85;
  color: var(--rock);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(28px, 5vw, 46px) 0 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--hairline);
  background: var(--hairline);
}

.page-faq .faq-stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  background: var(--ink-2);
}

.page-faq .faq-stats__num {
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1;
  color: var(--amber);
}

.page-faq .faq-stats__label {
  font-size: 13px;
  color: var(--rock);
}

/* ---------- 通用区块 ---------- */
.page-faq .faq-index,
.page-faq .faq-top,
.page-faq .faq-groups,
.page-faq .faq-reach {
  padding: var(--faq-pad) 0;
}

.page-faq .faq-head {
  max-width: 62ch;
  margin-bottom: clamp(28px, 4vw, 46px);
}

.page-faq .section-no {
  margin: 0 0 14px;
  padding-left: 14px;
  border-left: 1px solid var(--lake);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--lake-light);
}

.page-faq .faq-head h2 {
  font-size: clamp(26px, 3.8vw, 50px);
}

.page-faq .faq-head__sub {
  margin: 14px 0 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--rock);
}

.page-faq .band-rule {
  height: 8px;
  background: linear-gradient(90deg, var(--lake), var(--violet-lift) 46%, var(--amber) 100%);
}

/* ---------- 索引板 ---------- */
.page-faq .faq-index {
  background: var(--ink-2);
}

.page-faq .faq-index__grid {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-index__figure {
  margin: 0;
}

.page-faq .faq-index__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--hairline);
  background: var(--ink-3);
}

.page-faq .media-frame__caption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--rock);
}

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

.page-faq .faq-index__list li {
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-index__row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas:
    "no name count"
    "sample sample sample";
  align-items: center;
  gap: 6px 14px;
  padding: 18px 4px;
  color: var(--mist);
  border-bottom: 0;
  transition: background 200ms var(--ease-track), padding-left 200ms var(--ease-track);
}

.page-faq .faq-index__row:hover,
.page-faq .faq-index__row:focus-visible {
  background: rgba(242, 178, 60, 0.1);
  padding-left: 12px;
}

.page-faq .faq-index__no {
  grid-area: no;
  font-size: 13px;
  color: var(--amber);
  border: 1px solid var(--amber-deep);
  padding: 2px 7px;
}

.page-faq .faq-index__name {
  grid-area: name;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(17px, 2.1vw, 21px);
  letter-spacing: -0.01em;
}

.page-faq .faq-index__count {
  grid-area: count;
  font-size: 12px;
  color: var(--lake-light);
  white-space: nowrap;
}

.page-faq .faq-index__sample {
  grid-area: sample;
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock);
}

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

.page-faq .qa summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: 12px;
  padding: 18px 2px;
  cursor: pointer;
  list-style: none;
  transition: background 200ms var(--ease-track);
}

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

.page-faq .qa summary:hover {
  background: rgba(95, 211, 228, 0.06);
}

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

.page-faq .qa__no {
  font-size: 12px;
  color: var(--lake-light);
  padding-top: 4px;
  white-space: nowrap;
}

.page-faq .qa__q {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.5;
  color: var(--mist);
}

.page-faq .qa summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--amber);
  padding-top: 2px;
  transition: transform 240ms var(--ease-track);
}

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

.page-faq .qa[open] summary {
  background: rgba(242, 178, 60, 0.07);
}

.page-faq .qa__body {
  padding: 0 2px 20px;
  border-left: 2px solid var(--violet-lift);
  padding-left: 16px;
  margin-left: 2px;
  animation: faq-drop 320ms var(--ease-track) both;
}

.page-faq .qa__body p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--rock);
}

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

.page-faq .qa__steps {
  margin: 12px 0 0;
  padding-left: 20px;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .qa__steps li {
  margin-bottom: 6px;
}

.page-faq .qa__steps li::marker {
  font-family: var(--font-mono);
  color: var(--lake);
}

@keyframes faq-drop {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 分类组 ---------- */
.page-faq .faq-group {
  background: var(--ink-2);
  border: 1px solid var(--hairline);
  padding: 0 clamp(16px, 2.4vw, 28px);
  margin-bottom: 18px;
  scroll-margin-top: 96px;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding: 20px 0 16px;
  border-bottom: 1px solid var(--hairline-strong);
}

.page-faq .faq-group__no {
  font-size: 13px;
  color: var(--ink);
  background: var(--lake-light);
  padding: 2px 8px;
}

.page-faq .faq-group__head h3 {
  font-size: clamp(19px, 2.4vw, 26px);
  flex: 1 1 auto;
}

.page-faq .faq-group__count {
  font-size: 12px;
  color: var(--rock);
}

/* ---------- 异常排查 ---------- */
.page-faq .faq-trouble {
  padding: var(--faq-pad) 0;
  background: var(--sand);
  color: var(--ink);
}

.page-faq .faq-head--light h2 {
  color: var(--ink);
}

.page-faq .faq-trouble .section-no {
  color: var(--amber-deep);
  border-left-color: var(--amber-deep);
}

.page-faq .faq-head--light .faq-head__sub {
  color: #3a4a52;
}

.page-faq .faq-trouble__figure {
  margin: 0 0 var(--faq-gap);
}

.page-faq .faq-trouble__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid rgba(6, 18, 26, 0.22);
  background: #dcd4c6;
}

.page-faq .faq-trouble__figure .media-frame__caption {
  color: #4a5a62;
}

.page-faq .faq-trouble__tablewrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid rgba(6, 18, 26, 0.24);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 14px;
  background: var(--sand);
}

.page-faq .faq-table caption {
  caption-side: top;
  text-align: left;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  background: rgba(6, 18, 26, 0.06);
  border-bottom: 1px solid rgba(6, 18, 26, 0.24);
}

.page-faq .faq-table th {
  text-align: left;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink);
  border-bottom: 1px solid rgba(6, 18, 26, 0.32);
}

.page-faq .faq-table td {
  padding: 15px 16px;
  line-height: 1.7;
  color: #22323a;
  border-bottom: 1px solid rgba(6, 18, 26, 0.14);
  vertical-align: top;
}

.page-faq .faq-table tbody tr:nth-child(even) {
  background: rgba(6, 18, 26, 0.045);
}

.page-faq .faq-table tbody tr {
  transition: background 180ms var(--ease-track);
}

.page-faq .faq-table tbody tr:hover {
  background: rgba(242, 178, 60, 0.26);
}

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

.page-faq .faq-table__sym {
  font-weight: 700;
  color: var(--ink);
  border-left: 3px solid var(--amber-deep);
}

/* ---------- 联络 ---------- */
.page-faq .faq-reach {
  background:
    radial-gradient(100% 80% at 88% 10%, rgba(58, 43, 94, 0.55), transparent 60%),
    var(--ink);
  border-top: 1px solid var(--hairline);
}

.page-faq .faq-reach__grid {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-reach__primary {
  border: 1px solid var(--hairline-strong);
  background: var(--ink-2);
  padding: clamp(20px, 3vw, 34px);
}

.page-faq .faq-reach__mail {
  font-size: clamp(15px, 2.2vw, 21px);
  color: var(--lake-light);
  word-break: break-all;
  margin: 0 0 12px;
}

.page-faq .faq-reach__desc {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--rock);
}

.page-faq .faq-reach .btn {
  display: inline-block;
  border-bottom: 0;
}

.page-faq .faq-reach__side {
  padding: clamp(18px, 2.6vw, 28px);
  border: 1px dashed var(--hairline-strong);
}

.page-faq .faq-reach__list {
  margin: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-reach__key {
  display: block;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--lake-light);
  margin-bottom: 4px;
}

.page-faq .faq-reach__list dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-reach__fine {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--hairline);
  font-size: 13px;
  line-height: 1.8;
  color: var(--rock);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-index__row {
    grid-template-columns: auto minmax(120px, 0.8fr) minmax(0, 1.4fr) auto;
    grid-template-areas: "no name sample count";
    padding: 20px 4px;
  }

  .page-faq .qa summary {
    padding: 20px 4px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-index__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-reach__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-faq .faq-head {
    max-width: 54ch;
  }

  .page-faq .faq-groups .faq-head {
    max-width: 60ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__body {
    animation: none;
  }

  .page-faq .faq-index__row,
  .page-faq .qa summary,
  .page-faq .faq-table tbody tr {
    transition: none;
  }
}
<<<END>>>