.page-faq {
  --faq-card: rgba(20, 58, 51, 0.55);
  --faq-card-hi: rgba(30, 90, 76, 0.45);
  --faq-cyan-soft: rgba(79, 240, 206, 0.1);
  --faq-cyan-line: rgba(79, 240, 206, 0.3);
  --faq-gap: clamp(18px, 3vw, 34px);
  padding-top: clamp(16px, 3vw, 32px);
}

.page-faq .ly-crumbs {
  padding-bottom: clamp(14px, 2.5vw, 26px);
}

.page-faq .ly-crumbs a {
  color: var(--ly-mist);
  text-decoration: none;
  transition: color var(--ly-speed) var(--ly-ease);
}

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

.page-faq .ly-crumbs [aria-current="page"] {
  color: var(--ly-warm);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 5vw, 56px) 0 clamp(36px, 6vw, 76px);
  border-bottom: 1px solid var(--ly-line);
  background:
    radial-gradient(120% 90% at 82% 8%, rgba(79, 240, 206, 0.09), transparent 58%),
    radial-gradient(90% 70% at 0% 100%, rgba(30, 90, 76, 0.35), transparent 62%);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
}

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

.page-faq .faq-hero .ly-display {
  margin: 12px 0 0;
  font-size: clamp(30px, 7vw, 64px);
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero .ly-lead {
  margin-top: 18px;
  max-width: 46ch;
  color: var(--ly-mist);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-fact {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
  background: rgba(11, 35, 32, 0.6);
}

.page-faq .faq-fact__num {
  font-size: clamp(22px, 3vw, 28px);
  line-height: 1;
  color: var(--ly-cyan);
}

.page-faq .faq-fact__label {
  font-size: 14px;
  color: var(--ly-mist);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-faq .ly-media {
  display: block;
  overflow: hidden;
  border-radius: var(--ly-radius);
}

.page-faq .ly-media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

.page-faq .faq-hero__media {
  aspect-ratio: 1 / 1;
  width: 100%;
  border: 1px solid var(--faq-cyan-line);
  box-shadow: 0 24px 60px -40px rgba(79, 240, 206, 0.6);
}

.page-faq .faq-shot {
  aspect-ratio: 8 / 3;
  width: 100%;
  border-top: 1px solid var(--ly-line);
  border-bottom: 1px solid var(--ly-line);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.72fr);
  }
  .page-faq .faq-shot {
    max-width: none;
  }
}

/* ---------- 通用小节头 ---------- */
.page-faq .faq-head {
  margin-bottom: clamp(24px, 4vw, 44px);
  max-width: 62ch;
}

.page-faq .faq-head .ly-h2 {
  margin: 10px 0 0;
  font-size: clamp(24px, 4.2vw, 40px);
  line-height: 1.15;
}

.page-faq .faq-head__lead {
  margin-top: 16px;
  color: var(--ly-mist);
}

.page-faq .faq-head--narrow {
  max-width: 44ch;
}

/* ---------- 四步进度带 ---------- */
.page-faq .faq-track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0 0 clamp(26px, 4vw, 44px);
  padding: 0;
  list-style: none;
}

.page-faq .faq-track__node {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 16px;
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
  background: var(--faq-card);
  color: var(--ly-warm);
  text-decoration: none;
  transition:
    border-color var(--ly-speed) var(--ly-ease),
    background-color var(--ly-speed) var(--ly-ease),
    transform var(--ly-speed) var(--ly-ease);
}

.page-faq .faq-track__node:hover,
.page-faq .faq-track__node:focus-visible {
  border-color: var(--ly-cyan);
  background: var(--faq-card-hi);
  transform: translateY(-2px);
}

.page-faq .faq-track__num {
  font-size: clamp(22px, 3vw, 26px);
  line-height: 1;
  color: var(--ly-cyan);
  letter-spacing: 0.06em;
}

.page-faq .faq-track__name {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.page-faq .faq-track__node[href="#step-1"]:target,
.page-faq .faq-track__node:target {
  border-color: var(--ly-cyan);
}

.page-faq:has(#step-1:target) .faq-track__node[href="#step-1"],
.page-faq:has(#step-2:target) .faq-track__node[href="#step-2"],
.page-faq:has(#step-3:target) .faq-track__node[href="#step-3"],
.page-faq:has(#step-4:target) .faq-track__node[href="#step-4"] {
  border-color: var(--ly-cyan);
  background: var(--faq-cyan-soft);
}

.page-faq:has(#step-1:target) .faq-track__node[href="#step-1"] .faq-track__num,
.page-faq:has(#step-2:target) .faq-track__node[href="#step-2"] .faq-track__num,
.page-faq:has(#step-3:target) .faq-track__node[href="#step-3"] .faq-track__num,
.page-faq:has(#step-4:target) .faq-track__node[href="#step-4"] .faq-track__num {
  color: var(--ly-warm);
}

@media (min-width: 760px) {
  .page-faq .faq-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-faq .faq-track::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--ly-cyan), rgba(79, 240, 206, 0.08));
  }
}

/* ---------- 步骤条目 ---------- */
.page-faq .faq-step-list {
  display: grid;
  gap: 0;
}

.page-faq .faq-step {
  display: grid;
  gap: 12px;
  padding: clamp(22px, 3.4vw, 34px) 0;
  border-top: 1px solid var(--ly-line);
  scroll-margin-top: 96px;
}

.page-faq .faq-step:target {
  border-top-color: var(--ly-cyan);
  box-shadow: inset 0 1px 0 0 var(--ly-cyan);
}

.page-faq .faq-step__num {
  font-size: clamp(26px, 4vw, 34px);
  line-height: 1;
  color: var(--ly-board);
  letter-spacing: 0.06em;
  transition: color var(--ly-speed) var(--ly-ease);
}

.page-faq .faq-step:target .faq-step__num {
  color: var(--ly-cyan);
}

.page-faq .faq-step__body .ly-h3 {
  margin: 0 0 8px;
  font-size: clamp(18px, 2.6vw, 24px);
}

.page-faq .faq-step__body p {
  margin: 0;
  color: var(--ly-mist);
  max-width: 52ch;
}

.page-faq .faq-step__check {
  margin: 0;
  padding: 12px 0 0;
  border-top: 1px dashed var(--ly-line);
  font-size: 15px;
  color: var(--ly-warm);
}

.page-faq .faq-step__check .ly-tag {
  display: inline-block;
  margin-right: 8px;
  vertical-align: 1px;
}

@media (min-width: 860px) {
  .page-faq .faq-step {
    grid-template-columns: 84px minmax(0, 1fr) minmax(0, 0.62fr);
    align-items: start;
    gap: 0 32px;
  }
  .page-faq .faq-step__check {
    border-top: 0;
    border-left: 2px solid var(--ly-board);
    padding: 2px 0 0 18px;
  }
  .page-faq .faq-step__check .ly-tag {
    display: block;
    margin: 0 0 8px;
  }
}

/* ---------- 代码表 ---------- */
.page-faq .faq-table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
  background: rgba(6, 18, 15, 0.55);
}

.page-faq .faq-code-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 15px;
  text-align: left;
}

.page-faq .faq-code-table caption {
  padding: 14px 16px;
  text-align: left;
  color: var(--ly-mist);
  border-bottom: 1px solid var(--ly-line);
}

.page-faq .faq-code-table thead th {
  padding: 12px 16px;
  font-family: var(--ly-font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ly-mist);
  border-bottom: 1px solid var(--ly-line-strong);
}

.page-faq .faq-code-table td {
  padding: 14px 16px;
  color: var(--ly-warm);
  border-bottom: 1px solid rgba(159, 184, 176, 0.1);
  vertical-align: top;
}

.page-faq .faq-code-table td:nth-child(2) {
  color: var(--ly-mist);
}

.page-faq .faq-code-table td:first-child {
  font-family: var(--ly-font-mono);
  font-size: 17px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  color: var(--ly-cyan);
  white-space: nowrap;
}

.page-faq .faq-code-table tbody tr {
  transition:
    opacity var(--ly-speed) var(--ly-ease),
    background-color var(--ly-speed) var(--ly-ease);
}

.page-faq .faq-code-table tbody tr:nth-child(even) {
  background: rgba(20, 58, 51, 0.4);
}

.page-faq .faq-code-table tbody:hover tr:not(.faq-group) {
  opacity: 0.42;
}

.page-faq .faq-code-table tbody tr:not(.faq-group):hover {
  opacity: 1;
  background: var(--faq-cyan-soft);
}

.page-faq .faq-code-table tbody tr:not(.faq-group):hover td:first-child {
  color: var(--ly-warm);
}

.page-faq .faq-code-table tbody tr:focus-within {
  opacity: 1;
  background: var(--faq-cyan-soft);
}

.page-faq .faq-group th {
  padding: 14px 16px;
  font-family: var(--ly-font-sans);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ly-cyan);
  text-align: left;
  background: rgba(30, 90, 76, 0.48);
  border-top: 1px solid var(--ly-line-strong);
  border-bottom: 1px solid var(--ly-line);
}

.page-faq .faq-group th .ly-mono {
  color: var(--ly-warm);
}

.page-faq .faq-codes__note {
  margin: clamp(20px, 3vw, 28px) 0 0;
  max-width: 70ch;
  font-size: 15px;
  color: var(--ly-mist);
}

.page-faq .faq-codes__note a {
  color: var(--ly-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-cyan-line);
  transition: border-color var(--ly-speed) var(--ly-ease);
}

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

/* ---------- 三种现场 ---------- */
.page-faq .faq-symptom-grid {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-symptom {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
  background: linear-gradient(158deg, rgba(30, 90, 76, 0.4), rgba(6, 18, 15, 0.5));
  transition:
    border-color var(--ly-speed) var(--ly-ease),
    transform var(--ly-speed) var(--ly-ease);
}

.page-faq .faq-symptom:hover {
  border-color: var(--ly-cyan);
  transform: translateY(-2px);
}

.page-faq .faq-symptom__mark {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ly-orange);
}

.page-faq .faq-symptom .ly-h3 {
  margin: 0;
  font-size: clamp(18px, 2.4vw, 22px);
}

.page-faq .faq-symptom p {
  margin: 0;
  color: var(--ly-mist);
  font-size: 15px;
}

.page-faq .faq-symptom__start {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--ly-line);
  font-size: 14px;
  color: var(--ly-warm);
}

.page-faq .faq-symptom__start a {
  color: var(--ly-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-cyan-line);
}

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

@media (min-width: 860px) {
  .page-faq .faq-symptom-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }
  .page-faq .faq-symptom:nth-child(2) {
    margin-top: 26px;
  }
}

/* ---------- 设备自查 ---------- */
.page-faq .faq-device__grid {
  display: grid;
  gap: clamp(24px, 4vw, 56px);
}

.page-faq .faq-device__intro .ly-h2 {
  margin: 10px 0 16px;
  font-size: clamp(24px, 4.2vw, 40px);
  line-height: 1.15;
}

.page-faq .faq-device__intro p {
  margin: 0;
  max-width: 46ch;
  color: var(--ly-mist);
}

.page-faq .faq-device__link {
  margin-top: clamp(20px, 3vw, 28px) !important;
}

.page-faq .faq-device__list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ly-line);
}

.page-faq .faq-device__list li {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--ly-line);
}

.page-faq .faq-device__key {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ly-cyan);
}

.page-faq .faq-device__list p {
  margin: 0;
  font-size: 15px;
  color: var(--ly-warm);
}

@media (min-width: 900px) {
  .page-faq .faq-device__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }
}

/* ---------- 提交信息 ---------- */
.page-faq .faq-submit__grid {
  display: grid;
  gap: clamp(24px, 4vw, 52px);
}

.page-faq .faq-submit__body .ly-h2 {
  margin: 10px 0 0;
  font-size: clamp(24px, 4.2vw, 40px);
  line-height: 1.15;
}

.page-faq .faq-submit__list {
  display: grid;
  gap: 0;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ly-line);
}

.page-faq .faq-submit__list li {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--ly-line);
}

.page-faq .faq-submit__num {
  font-size: 15px;
  line-height: 1.5;
  color: var(--ly-orange);
  letter-spacing: 0.06em;
}

.page-faq .faq-submit__list .ly-h3 {
  margin: 0 0 4px;
  font-size: 17px;
}

.page-faq .faq-submit__list p {
  margin: 0;
  font-size: 15px;
  color: var(--ly-mist);
}

.page-faq .faq-submit__aside {
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--faq-cyan-line);
  border-radius: var(--ly-radius);
  background: linear-gradient(165deg, rgba(79, 240, 206, 0.09), rgba(11, 35, 32, 0.7));
  align-self: start;
}

.page-faq .faq-submit__mail {
  margin: 12px 0 0;
  font-size: clamp(16px, 2.4vw, 20px);
  word-break: break-all;
  color: var(--ly-cyan);
}

.page-faq .faq-submit__hint {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ly-mist);
}

.page-faq .faq-submit__hint a {
  color: var(--ly-warm);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-cyan-line);
  transition: color var(--ly-speed) var(--ly-ease);
}

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

@media (min-width: 900px) {
  .page-faq .faq-submit__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

/* ---------- 问答 ---------- */
.page-faq .faq-qa__list {
  max-width: 780px;
  display: grid;
  gap: 0;
}

.page-faq .faq-ask {
  border-left: 3px solid var(--ly-board);
  padding: 4px 0 4px 20px;
  border-bottom: 1px solid var(--ly-line);
  transition:
    border-color var(--ly-speed) var(--ly-ease),
    padding-bottom var(--ly-speed) var(--ly-ease);
}

.page-faq .faq-ask[open] {
  border-left-color: var(--ly-cyan);
  padding-bottom: 20px;
}

.page-faq .faq-ask summary {
  cursor: pointer;
  padding: 16px 0;
  font-size: clamp(16px, 2.2vw, 18px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ly-warm);
  list-style: none;
  transition: color var(--ly-speed) var(--ly-ease);
}

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

.page-faq .faq-ask summary::marker {
  content: "";
}

.page-faq .faq-ask summary:hover,
.page-faq .faq-ask summary:focus-visible {
  color: var(--ly-cyan);
}

.page-faq .faq-ask[open] summary {
  padding-bottom: 10px;
}

.page-faq .faq-ask p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ly-mist);
}

.page-faq .faq-ask[open] p {
  animation: faq-fade var(--ly-speed-fast) var(--ly-ease) both;
}

@keyframes faq-fade {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* ---------- 收束 ---------- */
.page-faq .faq-coda {
  padding-top: clamp(40px, 7vw, 96px);
  padding-bottom: clamp(44px, 7vw, 100px);
}

.page-faq .faq-coda .ly-rule {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .faq-coda__line {
  margin: 0;
  max-width: 52ch;
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.75;
  color: var(--ly-mist);
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 460px) {
  .page-faq .faq-hero__facts {
    flex-direction: column;
    align-items: stretch;
  }
  .page-faq .faq-fact {
    justify-content: space-between;
  }
  .page-faq .faq-track {
    grid-template-columns: minmax(0, 1fr);
  }
  .page-faq .faq-submit__list li {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
  }
  .page-faq .faq-shot {
    aspect-ratio: 16 / 9;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-ask[open] p {
    animation: none;
  }
  .page-faq .faq-track__node,
  .page-faq .faq-symptom,
  .page-faq .faq-ask {
    transition: none;
  }
  .page-faq .faq-track__node:hover,
  .page-faq .faq-symptom:hover {
    transform: none;
  }
}
<<<END>>>