.page-faq {
  --faq-panel-a: rgba(20, 33, 58, 0.88);
  --faq-panel-b: rgba(12, 20, 36, 0.92);
  --faq-sec: clamp(44px, 6.5vw, 88px);
  display: block;
  padding-bottom: clamp(40px, 6vw, 80px);
}

/* ---------- 首屏检索区 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  padding-top: clamp(20px, 3.5vw, 40px);
  padding-bottom: clamp(32px, 5vw, 64px);
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  margin: 0;
  pointer-events: none;
}

.page-faq .faq-hero__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.32;
}

.page-faq .faq-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(72% 96% at 16% 0%, rgba(56, 225, 230, 0.2), transparent 62%),
    radial-gradient(58% 82% at 92% 14%, rgba(124, 92, 255, 0.2), transparent 66%),
    linear-gradient(180deg, rgba(5, 7, 14, 0.5) 0%, rgba(5, 7, 14, 0.88) 62%, var(--ink) 100%);
}

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

.page-faq .faq-hero .crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-faq .faq-hero .crumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

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

.page-faq .faq-h1 {
  margin: 12px 0 0;
  max-width: 17ch;
  font-size: clamp(30px, 5.4vw, 62px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-lead {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-lead strong {
  color: var(--cyan);
  font-weight: 600;
}

.page-faq .faq-search {
  position: relative;
  margin-top: clamp(22px, 3.4vw, 38px);
  padding: clamp(18px, 2.8vw, 28px);
  border: 1px solid rgba(56, 225, 230, 0.5);
  background: linear-gradient(140deg, var(--faq-panel-a), var(--faq-panel-b));
  box-shadow: inset 0 1px 0 rgba(56, 225, 230, 0.1);
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-faq .faq-search::before,
.page-faq .faq-search::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid var(--cyan);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s var(--ease);
}

.page-faq .faq-search::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.page-faq .faq-search::after {
  right: -1px;
  bottom: -1px;
  border-top: 0;
  border-left: 0;
}

.page-faq .faq-search:focus-within {
  border-color: var(--cyan);
  box-shadow: inset 0 0 0 1px var(--cyan), 0 0 0 4px rgba(56, 225, 230, 0.12);
}

.page-faq .faq-search:focus-within::before,
.page-faq .faq-search:focus-within::after {
  opacity: 1;
}

.page-faq .faq-search__title {
  margin: 0;
  font-size: clamp(17px, 2.2vw, 21px);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-search__txt {
  margin: 8px 0 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-keys {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-keys a {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--line);
  background: rgba(5, 7, 14, 0.5);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.16s var(--ease), background 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-faq .faq-keys a:hover,
.page-faq .faq-keys a:focus-visible {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-sec {
  padding-top: var(--faq-sec);
}

.page-faq .faq-sec__head {
  display: grid;
  gap: 4px;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-no {
  display: block;
  font-family: var(--font-mono);
  font-weight: 200;
  font-size: clamp(30px, 4.6vw, 54px);
  line-height: 1;
  letter-spacing: 0.04em;
  color: rgba(56, 225, 230, 0.45);
}

.page-faq .faq-sec__h {
  margin: 0;
  font-size: clamp(21px, 3vw, 33px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-sec__p {
  margin: 8px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

@media (min-width: 860px) {
  .page-faq .faq-sec__head {
    grid-template-columns: auto minmax(0, 1fr);
    column-gap: clamp(18px, 3vw, 36px);
    align-items: start;
  }

  .page-faq .faq-no {
    grid-row: span 2;
  }

  .page-faq .faq-sec__h {
    align-self: end;
  }
}

/* ---------- 高频问题 ---------- */
.page-faq .qa-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-faq .qa {
  border: 1px solid var(--line);
  background: rgba(12, 20, 36, 0.66);
  transition: border-color 0.16s var(--ease), background 0.16s var(--ease);
}

.page-faq .qa[open] {
  border-color: rgba(56, 225, 230, 0.45);
  background: linear-gradient(150deg, rgba(20, 33, 58, 0.8), rgba(5, 7, 14, 0.7));
}

.page-faq .qa summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 10px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--white);
  font-size: 15px;
  line-height: 1.55;
}

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

.page-faq .qa summary:hover {
  background: rgba(56, 225, 230, 0.06);
}

.page-faq .qa__no {
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: 12px;
  color: var(--cyan);
  opacity: 0.75;
}

.page-faq .qa__x {
  position: relative;
  width: 12px;
  height: 12px;
  align-self: center;
  flex: none;
}

.page-faq .qa__x::before,
.page-faq .qa__x::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.page-faq .qa__x::before {
  top: 5px;
  left: 0;
  width: 12px;
  height: 1.5px;
}

.page-faq .qa__x::after {
  top: 0;
  left: 5px;
  width: 1.5px;
  height: 12px;
}

.page-faq .qa[open] .qa__x::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__body {
  margin: 0 16px 16px;
  padding: 2px 0 2px 14px;
  border-left: 1px dashed rgba(56, 225, 230, 0.5);
}

.page-faq .qa__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .qa__cat {
  margin-top: 10px !important;
  font-family: var(--font-mono);
  font-size: 12px !important;
  letter-spacing: 0.04em;
  color: rgba(56, 225, 230, 0.8) !important;
}

@media (min-width: 800px) {
  .page-faq .qa-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 20px;
  }
}

/* ---------- 五类文档比例条 ---------- */
.page-faq .docbars {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .docbar {
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(20, 33, 58, 0.6), rgba(5, 7, 14, 0.6));
}

.page-faq .docbar__top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.page-faq .docbar__h {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .docbar__n {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.page-faq .docbar__n b {
  margin-right: 4px;
  font-size: 22px;
  font-weight: 300;
  color: var(--cyan);
}

.page-faq .docbar__track {
  height: 5px;
  margin: 12px 0 10px;
  background: rgba(36, 49, 76, 0.9);
  overflow: hidden;
}

.page-faq .docbar__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  transition: width 0.3s var(--ease);
}

.page-faq .docbar--acc .docbar__fill { width: 26.6%; }
.page-faq .docbar--play .docbar__fill { width: 24.2%; }
.page-faq .docbar--dl .docbar__fill { width: 21.1%; }
.page-faq .docbar--dev .docbar__fill { width: 17.2%; }
.page-faq .docbar--sup .docbar__fill { width: 10.9%; }

.page-faq .docbar__d {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

@media (min-width: 780px) {
  .page-faq .docbars {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 24px;
  }
}

/* ---------- 通道对照表 ---------- */
.page-faq .chan-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-faq .chan-fig {
  margin: 0;
}

.page-faq .chan-intro__p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .chan-table-wrap {
  border-top: 1px solid var(--line);
  padding-top: clamp(16px, 2.4vw, 24px);
}

.page-faq .chan-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .chan-table caption {
  caption-side: top;
  padding: 0 0 14px;
  text-align: left;
  font-family: var(--font-cn);
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .chan-table thead th {
  padding: 10px 12px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.page-faq .chan-table tbody tr {
  transition: background 0.16s var(--ease);
}

.page-faq .chan-table tbody tr:hover {
  background: rgba(56, 225, 230, 0.06);
}

.page-faq .chan-table tbody th {
  padding: 16px 12px;
  text-align: left;
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.page-faq .chan-table tbody td {
  padding: 16px 12px;
  vertical-align: top;
  line-height: 1.7;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}

.page-faq .chan-table tbody th .lamp {
  margin-right: 8px;
}

.page-faq .chan-num {
  text-align: center;
  white-space: nowrap;
}

.page-faq .chan-num span {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 200;
  color: var(--cyan);
}

.page-faq .chan-table tfoot th,
.page-faq .chan-table tfoot td {
  padding: 14px 12px;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid rgba(240, 178, 74, 0.4);
}

.page-faq .chan-table tfoot th {
  text-align: left;
  font-weight: 600;
  color: var(--amber);
  white-space: nowrap;
}

.page-faq .chan-table tfoot .chan-num span {
  color: var(--amber);
}

@media (min-width: 820px) {
  .page-faq .chan-intro {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1fr);
    align-items: center;
    column-gap: clamp(22px, 4vw, 46px);
  }
}

@media (max-width: 719px) {
  .page-faq .chan-table,
  .page-faq .chan-table tbody,
  .page-faq .chan-table tfoot,
  .page-faq .chan-table tr,
  .page-faq .chan-table th,
  .page-faq .chan-table td {
    display: block;
    width: 100%;
  }

  .page-faq .chan-table colgroup,
  .page-faq .chan-table thead {
    display: none;
  }

  .page-faq .chan-table tbody tr,
  .page-faq .chan-table tfoot tr {
    margin-bottom: 12px;
    border: 1px solid var(--line);
    background: rgba(20, 33, 58, 0.4);
    padding: 4px 0;
  }

  .page-faq .chan-table tbody th,
  .page-faq .chan-table tbody td,
  .page-faq .chan-table tfoot th,
  .page-faq .chan-table tfoot td {
    padding: 8px 14px;
    border-bottom: 0;
    white-space: normal;
  }

  .page-faq .chan-table tbody th {
    border-bottom: 1px solid var(--line);
  }

  .page-faq .chan-table tbody td::before,
  .page-faq .chan-table tfoot td::before {
    content: attr(data-label);
    display: block;
    margin-bottom: 3px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    color: var(--muted);
    opacity: 0.8;
  }

  .page-faq .chan-num {
    text-align: left;
  }
}

/* ---------- 三步路径 ---------- */
.page-faq .steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .step {
  position: relative;
  padding: 20px 18px 22px;
  border: 1px solid var(--line);
  border-top: 2px solid rgba(240, 178, 74, 0.55);
  background: rgba(12, 20, 36, 0.55);
}

.page-faq .step__no {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-weight: 200;
  font-size: 26px;
  line-height: 1;
  color: rgba(240, 178, 74, 0.85);
}

.page-faq .step__h {
  margin: 0;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--white);
}

.page-faq .step__p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

@media (min-width: 820px) {
  .page-faq .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

/* ---------- 维护节奏 ---------- */
.page-faq .maint {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .maint__item {
  padding: 18px 20px;
  background: var(--hull);
}

.page-faq .maint__n {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 200;
  font-size: clamp(20px, 2.6vw, 26px);
  letter-spacing: 0.01em;
  color: var(--cyan);
}

.page-faq .maint__k {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .maint__link {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .maint__link a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 225, 230, 0.45);
}

.page-faq .maint__link a:hover,
.page-faq .maint__link a:focus-visible {
  border-color: var(--amber);
  color: var(--amber);
}

@media (min-width: 720px) {
  .page-faq .maint {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-faq .maint {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta {
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid rgba(240, 178, 74, 0.45);
  background:
    radial-gradient(80% 120% at 100% 0%, rgba(124, 92, 255, 0.18), transparent 62%),
    radial-gradient(70% 110% at 0% 100%, rgba(56, 225, 230, 0.14), transparent 64%),
    linear-gradient(150deg, rgba(20, 33, 58, 0.9), rgba(5, 7, 14, 0.9));
}

.page-faq .faq-cta__t {
  margin: 0;
  max-width: 30ch;
  font-size: clamp(19px, 2.8vw, 28px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-cta__d {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-cta__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .docbar__fill,
  .page-faq .qa__x::before,
  .page-faq .qa__x::after,
  .page-faq .faq-search,
  .page-faq .faq-search::before,
  .page-faq .faq-search::after {
    transition: none;
  }
}