.page-faq {
  display: block;
  color: var(--ink);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  background: var(--bg);
  padding: 1.1rem 0 0.2rem;
}

.page-faq .faq-crumb .breadcrumb {
  font-size: 0.8125rem;
  color: var(--muted);
}

.page-faq .faq-crumb .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-faq .faq-crumb .breadcrumb span[aria-current="page"] {
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(1.75rem, 4vw, 3rem) 0 clamp(2.25rem, 4.5vw, 3.5rem);
  background:
    radial-gradient(95% 130% at 90% -20%, rgba(6, 42, 42, 0.95) 0%, rgba(6, 42, 42, 0) 62%),
    radial-gradient(65% 95% at 0% 100%, rgba(76, 111, 255, 0.16) 0%, rgba(11, 16, 32, 0) 66%),
    var(--bg);
  border-bottom: 1px solid var(--line-dim);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(201, 210, 227, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(201, 210, 227, 0.055) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
}

.page-faq .faq-hero__lead h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.9rem, 6.4vw, 3.9rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: 0.03em;
}

.page-faq .faq-hero__lead .lede {
  margin: 0;
  max-width: 38rem;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.page-faq .faq-hero__status {
  border: 1px solid var(--line-dim);
  background: linear-gradient(180deg, rgba(28, 36, 56, 0.92) 0%, rgba(18, 24, 38, 0.92) 100%);
  padding: 0.35rem 1rem;
}

.page-faq .faq-status-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line-dim);
}

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

.page-faq .faq-status-item .status-label {
  color: var(--muted);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
}

.page-faq .faq-status-item .status-value {
  color: var(--cyan);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(2rem, 5vw, 4.5rem);
    align-items: end;
  }
}

/* ---------- 页内锚点 ---------- */
.page-faq .faq-anchors {
  background: var(--surface);
  border-bottom: 1px solid var(--line-dim);
}

.page-faq .faq-anchors__inner {
  display: flex;
  gap: 0.2rem;
  overflow-x: auto;
  scrollbar-width: none;
  padding-top: 0.15rem;
  padding-bottom: 0.15rem;
}

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

.page-faq .faq-anchor {
  flex: 0 0 auto;
  padding: 0.7rem 0.85rem;
  color: var(--muted);
  font-size: 0.8125rem;
  letter-spacing: 0.03em;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

/* ---------- 通用区块 ---------- */
.page-faq .faq-section {
  padding: clamp(2.75rem, 6.5vw, 5rem) 0;
  scroll-margin-top: 24px;
}

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

.page-faq .faq-head {
  max-width: 46rem;
  margin-bottom: clamp(1.6rem, 3.5vw, 2.75rem);
}

.page-faq .faq-head .eyebrow {
  margin: 0 0 0.6rem;
  color: var(--orange);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
}

.page-faq .faq-head h2 {
  margin: 0 0 0.7rem;
  font-size: clamp(1.5rem, 3.6vw, 2.15rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: 0.02em;
}

.page-faq .faq-head p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.page-faq .text-link {
  display: inline-block;
  margin-top: 1rem;
  color: var(--cyan);
  font-size: 0.9rem;
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 243, 214, 0.4);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .text-link:hover,
.page-faq .text-link:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 步骤时间线 ---------- */
.page-faq .step-track {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 2.1rem;
  display: grid;
  gap: 0.9rem;
}

.page-faq .step-track::before {
  content: "";
  position: absolute;
  left: 0.55rem;
  top: 1.4rem;
  bottom: 1.4rem;
  width: 1px;
  background: linear-gradient(180deg,
    var(--cyan) 0%,
    rgba(47, 243, 214, 0.25) 42%,
    rgba(201, 210, 227, 0.2) 100%);
}

.page-faq .step-node {
  position: relative;
}

.page-faq .step-node::before {
  content: "";
  position: absolute;
  left: -1.55rem;
  top: 1.4rem;
  width: 11px;
  height: 11px;
  transform: translateX(-50%);
  border: 1px solid var(--muted);
  background: var(--bg);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .step-node[data-state="online"]::before {
  border-color: var(--cyan);
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(47, 243, 214, 0.16);
}

.page-faq .step-node[data-state="updating"]::before {
  border-color: var(--orange);
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 138, 61, 0.16);
}

.page-faq .step-detail {
  border: 1px solid var(--line-dim);
  background: var(--surface);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .step-detail:hover {
  border-color: rgba(201, 210, 227, 0.42);
}

.page-faq .step-detail[open] {
  background: linear-gradient(180deg, rgba(28, 36, 56, 0.9) 0%, rgba(18, 24, 38, 0.95) 100%);
  border-color: rgba(47, 243, 214, 0.34);
}

.page-faq .step-summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  align-items: baseline;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
}

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

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

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

.page-faq .step-index {
  color: var(--cyan);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  font-variant-numeric: tabular-nums;
}

.page-faq .step-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: 0.015em;
}

.page-faq .step-content {
  padding: 0 1.1rem 1.15rem;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-faq .step-content p {
  margin: 0 0 0.7rem;
}

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

.page-faq .step-content a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 243, 214, 0.4);
}

.page-faq .step-prep {
  list-style: none;
  margin: 0;
  padding: 0.7rem 0 0;
  border-top: 1px dashed rgba(201, 210, 227, 0.22);
  display: grid;
  gap: 0.3rem;
}

.page-faq .step-prep li {
  display: grid;
  grid-template-columns: 4.8rem minmax(0, 1fr);
  gap: 0.65rem;
  font-size: 0.875rem;
}

.page-faq .step-prep .prep-key {
  color: var(--orange);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  line-height: 1.9;
}

@media (min-width: 820px) {
  .page-faq .step-track {
    padding-left: 2.6rem;
  }

  .page-faq .step-track::before {
    left: 0.65rem;
  }

  .page-faq .step-node::before {
    left: -1.95rem;
  }
}

/* ---------- 换设备 ---------- */
.page-faq .faq-switch {
  background: linear-gradient(180deg, var(--bg) 0%, rgba(6, 42, 42, 0.5) 60%, var(--bg) 100%);
}

.page-faq .faq-switch__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.75rem;
}

.page-faq .faq-switch__media {
  margin: 0;
  border: 1px solid var(--line-dim);
  background: var(--surface);
  overflow: hidden;
}

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

.page-faq .faq-switch__text h2 {
  margin: 0 0 0.9rem;
  font-size: clamp(1.5rem, 3.6vw, 2.15rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.page-faq .faq-switch__text p {
  margin: 0 0 0.9rem;
  color: var(--muted);
  line-height: 1.85;
}

.page-faq .faq-diagram {
  display: block;
  width: 100%;
  height: auto;
  margin: 1.6rem 0 0;
}

.page-faq .faq-diagram .d-frame {
  fill: rgba(28, 36, 56, 0.75);
  stroke: rgba(201, 210, 227, 0.34);
  stroke-width: 1;
}

.page-faq .faq-diagram .d-line {
  stroke: rgba(201, 210, 227, 0.28);
  stroke-width: 1;
}

.page-faq .faq-diagram .d-arrow {
  stroke: var(--cyan);
  stroke-width: 1.5;
  fill: none;
}

.page-faq .faq-diagram .d-badge {
  fill: rgba(47, 243, 214, 0.12);
  stroke: var(--cyan);
  stroke-width: 1;
}

.page-faq .faq-diagram .d-badge-text {
  fill: var(--cyan);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.page-faq .faq-diagram .d-text {
  fill: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.page-faq .faq-switch__notes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.6rem;
}

@media (min-width: 920px) {
  .page-faq .faq-switch__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: clamp(2rem, 5vw, 4rem);
    align-items: start;
  }
}

/* ---------- 通道与网络 ---------- */
.page-faq .net-rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(232px, 76%);
  gap: 0.8rem;
  overflow-x: auto;
  padding-bottom: 0.6rem;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

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

.page-faq .net-card {
  scroll-snap-align: start;
  border: 1px solid var(--line-dim);
  background: var(--surface);
  padding: 1.1rem 1.05rem 1.2rem;
}

.page-faq .net-card:nth-child(2) {
  background: linear-gradient(180deg, rgba(28, 36, 56, 0.95) 0%, rgba(18, 24, 38, 0.95) 100%);
}

.page-faq .net-index {
  display: block;
  color: var(--orange);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  margin-bottom: 0.55rem;
  font-variant-numeric: tabular-nums;
}

.page-faq .net-card h3 {
  margin: 0 0 0.55rem;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.015em;
}

.page-faq .net-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.75;
}

.page-faq .net-scale {
  display: grid;
  gap: 0.5rem;
  margin: 1.75rem 0 1.75rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line-dim);
  border-bottom: 1px solid var(--line-dim);
}

.page-faq .net-scale__label {
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
}

.page-faq .net-scale__bar {
  display: block;
  height: 6px;
  background: var(--surface-2);
  border-left: 2px solid var(--cyan);
}

.page-faq .net-scale__fill {
  display: block;
  height: 100%;
}

.page-faq .net-scale__fill--high {
  width: 82%;
  background: linear-gradient(90deg, rgba(47, 243, 214, 0.85) 0%, rgba(47, 243, 214, 0.15) 100%);
}

.page-faq .net-scale__fill--mid {
  width: 58%;
  background: linear-gradient(90deg, rgba(76, 111, 255, 0.85) 0%, rgba(76, 111, 255, 0.15) 100%);
}

.page-faq .net-scale__fill--low {
  width: 34%;
  background: linear-gradient(90deg, rgba(255, 138, 61, 0.85) 0%, rgba(255, 138, 61, 0.15) 100%);
}

.page-faq .net-scale__hint {
  color: var(--muted);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.page-faq .net-media {
  margin: 0;
  border: 1px solid var(--line-dim);
  background: var(--surface);
  overflow: hidden;
}

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

@media (min-width: 860px) {
  .page-faq .net-rail {
    grid-auto-flow: row;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-top: 1px solid var(--line-dim);
    border-bottom: 1px solid var(--line-dim);
  }

  .page-faq .net-card {
    border: 0;
    padding: 1.4rem 1.2rem 1.5rem;
  }

  .page-faq .net-card + .net-card {
    border-left: 1px solid var(--line-dim);
  }

  .page-faq .net-scale {
    margin-top: 1.75rem;
  }
}

/* ---------- 分类与偏好 ---------- */
.page-faq .account-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
}

.page-faq .account-text h2 {
  margin: 0 0 0.9rem;
  font-size: clamp(1.5rem, 3.6vw, 2.15rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.page-faq .account-text p {
  margin: 0 0 0.9rem;
  color: var(--muted);
  line-height: 1.85;
}

.page-faq .account-cards {
  display: grid;
  gap: 0.8rem;
}

.page-faq .account-card {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--line-dim);
  border-left: 2px solid var(--cyan);
  background: linear-gradient(135deg, rgba(6, 42, 42, 0.7) 0%, rgba(18, 24, 38, 0.95) 70%);
}

.page-faq .account-card:nth-child(2) {
  border-left-color: var(--orange);
}

.page-faq .account-card:nth-child(3) {
  border-left-color: var(--blue);
}

.page-faq .account-card__num {
  color: var(--ink);
  font-size: 1.75rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.page-faq .account-card__label {
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.6;
}

@media (min-width: 880px) {
  .page-faq .account-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(2rem, 5vw, 4rem);
    align-items: start;
  }
}

/* ---------- 自查清单 ---------- */
.page-faq .faq-check {
  background: linear-gradient(180deg, rgba(28, 36, 56, 0.45) 0%, rgba(11, 16, 32, 0) 100%);
}

.page-faq .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-faq .check-item {
  border: 1px solid var(--line-dim);
  background: var(--surface);
  padding: 0.95rem 1.05rem 1rem;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .check-item:hover {
  border-color: rgba(201, 210, 227, 0.4);
}

.page-faq .check-label {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  cursor: pointer;
}

.page-faq .check-input {
  appearance: none;
  -webkit-appearance: none;
  flex: 0 0 auto;
  position: relative;
  width: 18px;
  height: 18px;
  margin: 0.15rem 0 0;
  border: 1px solid rgba(201, 210, 227, 0.45);
  background: var(--surface-2);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .check-input:hover {
  border-color: var(--cyan);
}

.page-faq .check-input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .check-input:checked {
  border-color: var(--cyan);
  background: rgba(47, 243, 214, 0.16);
}

.page-faq .check-input:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
}

.page-faq .check-text {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--ink);
  transition: color var(--dur) var(--ease);
}

.page-faq .check-note {
  margin: 0.45rem 0 0 1.95rem;
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.7;
}

.page-faq .check-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 243, 214, 0.4);
}

.page-faq .check-item:has(.check-input:checked) {
  border-color: rgba(47, 243, 214, 0.22);
  background: rgba(18, 24, 38, 0.75);
}

.page-faq .check-item:has(.check-input:checked) .check-text {
  color: var(--muted);
  text-decoration: line-through;
  text-decoration-color: rgba(154, 167, 194, 0.5);
}

@media (min-width: 780px) {
  .page-faq .check-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
  }
}

/* ---------- 常见问答 ---------- */
.page-faq .qna-list {
  border-top: 1px solid var(--line-dim);
}

.page-faq .qna-item {
  border-bottom: 1px solid var(--line-dim);
}

.page-faq .qna-summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  align-items: baseline;
  padding: 1.05rem 0.2rem;
  cursor: pointer;
  list-style: none;
  transition: color var(--dur) var(--ease);
}

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

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

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

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

.page-faq .qna-num {
  color: var(--cyan);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  font-variant-numeric: tabular-nums;
}

.page-faq .qna-summary h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.015em;
  transition: color var(--dur) var(--ease);
}

.page-faq .qna-item[open] .qna-summary h3 {
  color: var(--cyan);
}

.page-faq .qna-answer {
  padding: 0 0.2rem 1.2rem 2.1rem;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-faq .qna-answer p {
  margin: 0;
}

.page-faq .qna-answer a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 243, 214, 0.4);
}

/* ---------- 结尾 ---------- */
.page-faq .faq-next {
  background: linear-gradient(120deg, rgba(6, 42, 42, 0.85) 0%, rgba(28, 36, 56, 0.7) 55%, var(--bg) 100%);
  border-top: 1px solid var(--line-dim);
}

.page-faq .faq-next__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  align-items: center;
}

.page-faq .faq-next__text h2 {
  margin: 0 0 0.7rem;
  font-size: clamp(1.4rem, 3.2vw, 1.95rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: 0.02em;
}

.page-faq .faq-next__text p {
  margin: 0;
  max-width: 40rem;
  color: var(--muted);
  line-height: 1.8;
}

.page-faq .faq-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

@media (min-width: 900px) {
  .page-faq .faq-next__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    justify-items: start;
  }

  .page-faq .faq-next__actions {
    justify-content: flex-end;
  }
}
<<<END>>>