.page-faq {
  --faq-panel: rgba(7, 17, 31, 0.78);
  --faq-card: rgba(11, 27, 51, 0.62);
  display: block;
  padding-bottom: clamp(56px, 9vw, 110px);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-gray);
  padding-top: clamp(20px, 3vw, 34px);
}

.page-faq .breadcrumb a {
  color: var(--c-gray);
  text-decoration: none;
  transition: color 0.25s var(--ease);
}

.page-faq .breadcrumb a:hover {
  color: var(--c-orange);
}

.page-faq .breadcrumb__sep {
  color: rgba(134, 152, 178, 0.6);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-top: clamp(6px, 1.5vw, 14px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 40px);
  margin-top: clamp(20px, 3vw, 34px);
  align-items: end;
}

.page-faq .faq-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--c-orange);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(32px, 5.6vw, 58px);
  font-weight: 800;
  line-height: 1.07;
  letter-spacing: -0.03em;
  color: var(--c-paper);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 58ch;
  font-family: var(--font-body);
  font-size: clamp(16px, 1.15vw, 18px);
  line-height: 1.78;
  color: var(--c-silver);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

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

.page-faq .faq-hero__figure .figure__cap {
  margin-top: 12px;
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-sec {
  margin-top: clamp(54px, 8vw, 104px);
  scroll-margin-top: 120px;
}

.page-faq .faq-sec__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(22px, 3vw, 36px);
}

.page-faq .faq-sec__head .section__title {
  margin: 0;
}

.page-faq .faq-sec__head .section__lead {
  margin: 0;
  max-width: 64ch;
}

/* ---------- 核验入口 ---------- */
.page-faq .faq-verify {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.4vw, 26px);
}

.page-faq .faq-verify__panel {
  display: grid;
  gap: 18px;
  padding: clamp(20px, 2.8vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background:
    linear-gradient(158deg, rgba(61, 217, 192, 0.12), rgba(255, 107, 44, 0.07) 54%, transparent 80%),
    var(--faq-panel);
  position: relative;
  overflow: hidden;
}

.page-faq .faq-verify__panel::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--c-cyan), var(--c-orange));
}

.page-faq .faq-keys {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-key {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-key:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-key__idx {
  grid-row: 1 / span 2;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 1px solid rgba(255, 107, 44, 0.42);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-orange);
}

.page-faq .faq-key__name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--c-paper);
  letter-spacing: -0.01em;
}

.page-faq .faq-key__desc {
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-gray);
}

.page-faq .faq-verify__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: var(--line);
  overflow: hidden;
}

.page-faq .faq-verify__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 18px;
  background: var(--c-deep-dark);
}

.page-faq .faq-verify__stats .stat__value {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.4vw, 38px);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--c-orange);
  line-height: 1;
}

.page-faq .faq-verify__stats .stat__unit {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 400;
  margin-left: 4px;
  color: var(--c-silver);
}

.page-faq .faq-verify__stats .stat__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-gray);
}

/* ---------- 查询步骤 ---------- */
.page-faq .faq-flow {
  list-style: none;
  margin: 0 0 clamp(20px, 3vw, 32px);
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2vw, 22px);
}

.page-faq .faq-flow__step {
  position: relative;
  padding: 24px 20px 22px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--c-orange);
  border-radius: var(--radius-m);
  background: var(--faq-card);
}

.page-faq .faq-flow__num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--c-orange);
}

.page-faq .faq-flow__step h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--c-paper);
}

.page-faq .faq-flow__step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-silver);
}

/* ---------- 参数标签带 ---------- */
.page-faq .faq-params {
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background:
    linear-gradient(118deg, rgba(61, 217, 192, 0.1), transparent 62%),
    var(--faq-panel);
}

.page-faq .faq-params__label {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
}

.page-faq .faq-params__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-params__list li {
  padding: 7px 15px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  background: rgba(199, 210, 228, 0.05);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-silver);
}

.page-faq .faq-params__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-gray);
}

/* ---------- 保修 ---------- */
.page-faq .faq-warranty {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 2.8vw, 30px);
  align-items: start;
}

.page-faq .faq-table__cap {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
}

.page-faq .faq-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--faq-panel);
  overflow: hidden;
  font-size: 14.5px;
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.page-faq .faq-table thead th {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--c-gray);
  background: rgba(7, 17, 31, 0.72);
}

.page-faq .faq-table tbody th {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--c-paper);
  white-space: nowrap;
}

.page-faq .faq-table tbody td {
  color: var(--c-silver);
}

.page-faq .faq-table tbody td:nth-child(2) {
  font-family: var(--font-mono);
  color: var(--c-orange);
  white-space: nowrap;
}

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

.page-faq .faq-table__foot {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--c-gray);
}

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

/* ---------- 安装 ---------- */
.page-faq .faq-install {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.6vw, 28px);
}

.page-faq .faq-install__col {
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--faq-card);
}

.page-faq .faq-install__col h3 {
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--c-paper);
  letter-spacing: -0.01em;
}

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

.page-faq .faq-mini li {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-silver);
}

.page-faq .faq-mini__num {
  display: block;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-orange);
  border-bottom: 1px solid rgba(255, 107, 44, 0.45);
}

.page-faq .faq-checks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-faq .faq-checks li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-silver);
}

.page-faq .faq-checks li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.65em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--c-cyan);
  box-shadow: 0 0 0 3px rgba(61, 217, 192, 0.16);
}

/* ---------- 工单与联系 ---------- */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.4vw, 26px);
  align-items: start;
}

.page-faq .faq-contact__main {
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--faq-card);
  overflow: hidden;
}

.page-faq .faq-contact__item {
  padding: clamp(18px, 2.4vw, 26px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-contact__item:last-child {
  border-bottom: 0;
}

.page-faq .faq-contact__key {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-orange);
}

.page-faq .faq-contact__item p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-silver);
}

.page-faq .faq-contact__val {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.4vw, 17px);
  color: var(--c-paper);
  word-break: break-word;
}

.page-faq .faq-contact__side {
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--faq-panel);
}

.page-faq .faq-contact__list {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-contact__row {
  display: grid;
  gap: 5px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-contact__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-contact__row dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--c-gray);
}

.page-faq .faq-contact__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--c-silver);
  word-break: break-word;
}

.page-faq .faq-contact__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-gray);
}

/* ---------- 问答 ---------- */
.page-faq .faq-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(22px, 3vw, 34px);
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(7, 17, 31, 0.6);
}

.page-faq .faq-cats__link {
  padding: 7px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  background: rgba(199, 210, 228, 0.06);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-silver);
  text-decoration: none;
  transition: color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-faq .faq-cats__link:hover,
.page-faq .faq-cats__link:focus-visible {
  color: var(--c-deep-dark);
  background: var(--c-orange);
}

.page-faq .faq-groups {
  display: grid;
  gap: clamp(30px, 4vw, 48px);
}

.page-faq .faq-group {
  scroll-margin-top: 130px;
}

.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

.page-faq .faq-group__tag {
  padding: 4px 12px;
  border: 1px solid rgba(61, 217, 192, 0.4);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
}

.page-faq .faq-item {
  margin-bottom: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--faq-card);
  overflow: hidden;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

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

.page-faq .faq-item[open] {
  border-color: rgba(255, 107, 44, 0.45);
  background: rgba(11, 27, 51, 0.9);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px clamp(16px, 2.2vw, 24px);
  list-style: none;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--c-paper);
}

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

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

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: -2px;
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--c-orange);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__icon {
  flex: 0 0 auto;
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  border-radius: 2px;
  background: var(--c-gray);
  transition: transform 0.3s var(--ease), background 0.3s var(--ease);
}

.page-faq .faq-item__icon::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .faq-item__icon::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.page-faq .faq-item[open] .faq-item__icon::before {
  background: var(--c-orange);
}

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: scaleY(0);
}

.page-faq .faq-item__a {
  padding: 0 clamp(16px, 2.2vw, 24px) 20px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-silver);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-more {
  margin: clamp(26px, 3.6vw, 40px) 0 0;
  padding: 18px 20px;
  border-left: 3px solid var(--c-orange);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  background: rgba(255, 107, 44, 0.07);
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-silver);
}

.page-faq .faq-more a {
  color: var(--c-orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 107, 44, 0.4);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-install {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-faq .faq-flow__step:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  }

  .page-faq .faq-verify {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.34fr) minmax(0, 1fr);
  }
}

@media (min-width: 1020px) {
  .page-faq .faq-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-flow__step:last-child {
    grid-column: auto;
  }

  .page-faq .faq-warranty {
    grid-template-columns: minmax(0, 1.36fr) minmax(0, 1fr);
  }
}

@media (max-width: 480px) {
  .page-faq .faq-hero__actions .btn {
    width: 100%;
  }

  .page-faq .faq-table th,
  .page-faq .faq-table td {
    padding: 10px 11px;
    font-size: 13.5px;
  }

  .page-faq .faq-cats {
    border-radius: var(--radius-m);
  }
}