.page-faq {
  --faq-gap: clamp(20px, 3vw, 32px);
  --faq-radius: 6px;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: clamp(76px, 12vh, 132px) var(--gutter) clamp(56px, 8vh, 96px);
  color: var(--body-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
}

.page-faq h1,
.page-faq h2,
.page-faq h3 {
  color: var(--silver);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0;
}

.page-faq p {
  margin: 0 0 14px;
}

.page-faq a {
  color: var(--cyan);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  margin-bottom: 22px;
}

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--rock);
}

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

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

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-bottom: clamp(28px, 4vw, 44px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 96px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), var(--star));
}

.page-faq .faq-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  text-transform: uppercase;
  margin: 0 0 12px;
}

.page-faq .faq-hero h1 {
  font-size: clamp(1.9rem, 5vw, 3.4rem);
  line-height: 1.16;
  max-width: 22ch;
  margin-bottom: 20px;
}

.page-faq .faq-hero__lead {
  max-width: 62ch;
  font-size: clamp(1rem, 1.4vw, 1.0625rem);
  color: var(--body-text);
}

.page-faq .faq-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-faq .faq-hero__quick a {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--mute);
  font-size: 13px;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-hero__quick a:hover {
  border-color: var(--cyan);
  color: var(--silver);
  background-color: rgba(86, 200, 222, 0.08);
}

/* ---------- 双栏布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  margin-top: clamp(28px, 4vw, 48px);
}

.page-faq .faq-index {
  order: -1;
}

.page-faq .faq-index__title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--rock);
  text-transform: uppercase;
  margin: 0 0 12px;
}

.page-faq .faq-index ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}

.page-faq .faq-index a {
  display: block;
  font-size: 13px;
  color: var(--mute);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

/* ---------- 章节节奏 ---------- */
.page-faq .faq-section {
  padding: clamp(30px, 5vw, 46px) 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-section:first-child {
  padding-top: 0;
}

.page-faq .faq-section:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-faq .faq-section h2 {
  font-size: clamp(1.35rem, 2.6vw, 1.85rem);
  line-height: 1.3;
  margin-bottom: 14px;
  max-width: 26ch;
}

.page-faq .faq-lead {
  max-width: 64ch;
  color: var(--body-text);
}

/* ---------- 平台侧 / 本地侧 分栏卡 ---------- */
.page-faq .split-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.page-faq .split-card {
  position: relative;
  padding: 20px 22px 22px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .split-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 2px;
  border-radius: 2px;
}

.page-faq .split-card--platform::before {
  background: linear-gradient(180deg, var(--cyan), var(--star));
}

.page-faq .split-card--local::before {
  background: linear-gradient(180deg, var(--amber), var(--clay));
}

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

.page-faq .split-card h3 {
  font-size: 1.0625rem;
  margin: 12px 0 8px;
}

.page-faq .split-card p {
  margin: 0;
  font-size: 15px;
  color: var(--body-text);
}

.page-faq .tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 3px;
  font-size: 12px;
  letter-spacing: 0.08em;
  font-family: var(--font-mono);
}

.page-faq .tag--cyan {
  color: var(--cyan);
  border: 1px solid rgba(86, 200, 222, 0.45);
  background: rgba(86, 200, 222, 0.08);
}

.page-faq .tag--amber {
  color: var(--amber);
  border: 1px solid rgba(243, 185, 106, 0.45);
  background: rgba(243, 185, 106, 0.08);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 26px 0 6px;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  overflow: hidden;
  background: var(--ink-2);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--rock);
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

/* ---------- 五类原因：编号轨道 ---------- */
.page-faq .rail-list {
  list-style: none;
  margin: 34px 0 0;
  padding: 0 0 0 52px;
  position: relative;
}

.page-faq .rail-list::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), var(--star) 48%, var(--line));
  opacity: 0.75;
}

.page-faq .rail-item {
  position: relative;
  margin-bottom: 34px;
}

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

.page-faq .rail-item__num {
  position: absolute;
  left: -52px;
  top: 0;
  width: 35px;
  height: 35px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  border: 1px solid var(--line);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .rail-item:hover .rail-item__num {
  border-color: var(--cyan);
  color: var(--silver);
}

.page-faq .rail-item__title {
  font-size: 1.0625rem;
  margin-bottom: 8px;
}

.page-faq .rail-item__action {
  margin: 0;
  font-size: 15px;
  color: var(--silver);
  border-left: 2px solid var(--star);
  padding-left: 12px;
}

/* ---------- 折叠说明 ---------- */
.page-faq .faq-fold {
  margin-top: 14px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-fold summary {
  cursor: pointer;
  list-style: none;
  padding: 10px 0;
  font-size: 13px;
  color: var(--mute);
  display: flex;
  align-items: center;
  gap: 10px;
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-fold summary::after {
  content: "";
  width: 7px;
  height: 7px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg);
  margin-left: auto;
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-fold[open] summary::after {
  transform: rotate(-135deg);
}

.page-faq .faq-fold summary:hover {
  color: var(--cyan);
}

.page-faq .faq-fold__body {
  padding: 2px 0 16px;
  font-size: 15px;
  line-height: 1.78;
}

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

.page-faq .faq-fold--block {
  border-top: 1px solid var(--line);
}

.page-faq .faq-fold--block summary {
  font-size: 1rem;
  color: var(--silver);
  padding: 16px 0;
  font-weight: 700;
}

.page-faq .faq-fold--block summary:hover {
  color: var(--cyan);
}

.page-faq .fold-group {
  margin-top: 18px;
  border-bottom: 1px solid var(--line);
}

/* ---------- 换设备重登：步骤 ---------- */
.page-faq .relogin-steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-faq .relogin-step {
  position: relative;
  padding: 20px 20px 20px 20px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .relogin-step:hover {
  border-color: var(--star);
  transform: translateY(-2px);
}

.page-faq .relogin-step__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--star);
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

.page-faq .relogin-step__body h3 {
  font-size: 1.0625rem;
  margin-bottom: 8px;
}

.page-faq .relogin-step__body p {
  font-size: 15px;
  margin-bottom: 10px;
}

.page-faq .faq-inline-link {
  display: inline-block;
  font-size: 13px;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-inline-link::after {
  content: " →";
}

.page-faq .faq-inline-link:hover {
  color: var(--star);
}

/* ---------- 反馈四要素 ---------- */
.page-faq .feedback-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  overflow: hidden;
}

.page-faq .feedback-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 16px 18px;
  background: var(--ink-2);
}

.page-faq .feedback-item__key {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--amber);
}

.page-faq .feedback-item p {
  margin: 0;
  font-size: 15px;
}

.page-faq .feedback-sample {
  margin-top: 22px;
  padding: 18px 20px;
  background: var(--ink-2);
  border: 1px dashed var(--line);
  border-radius: var(--faq-radius);
}

.page-faq .feedback-sample__title {
  font-size: 13px;
  color: var(--rock);
  margin-bottom: 12px;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.page-faq .version-copy {
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 16px;
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--silver);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.02em;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .version-copy:hover {
  border-color: var(--cyan);
}

.page-faq .version-copy.is-copied {
  border-color: var(--amber);
}

.page-faq .version-copy__value {
  color: var(--silver);
}

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

.page-faq .version-copy.is-copied .version-copy__hint {
  color: var(--amber);
}

/* ---------- 人工支持 ---------- */
.page-faq .faq-escalate {
  position: relative;
  margin-top: 8px;
  padding: 30px 24px;
  background: linear-gradient(140deg, rgba(27, 42, 82, 0.55), rgba(6, 10, 22, 0.9));
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  overflow: hidden;
}

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

.page-faq .faq-escalate p {
  max-width: 62ch;
}

.page-faq .faq-escalate__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-faq .btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 4px;
  font-size: 14px;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .btn--primary {
  background: var(--cyan);
  border: 1px solid var(--cyan);
  color: var(--ink);
  font-weight: 700;
}

.page-faq .btn--primary:hover {
  background: var(--star);
  border-color: var(--star);
}

.page-faq .btn--ghost {
  border: 1px solid var(--line);
  color: var(--silver);
  background: transparent;
}

.page-faq .btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .split-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .feedback-item {
    grid-template-columns: 132px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }

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

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

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: clamp(36px, 5vw, 56px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 32px;
    align-self: start;
  }

  .page-faq .faq-index ul {
    display: block;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-index li + li {
    margin-top: 2px;
  }

  .page-faq .faq-index a {
    padding: 9px 0 9px 16px;
    margin-left: -1px;
    border-bottom: none;
    border-left: 2px solid transparent;
  }

  .page-faq .faq-index a:hover {
    border-bottom-color: transparent;
    border-left-color: var(--cyan);
    color: var(--silver);
  }

  .page-faq .relogin-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .faq-escalate {
    padding: 36px 34px;
  }
}

@media (max-width: 560px) {
  .page-faq .rail-list {
    padding-left: 42px;
  }

  .page-faq .rail-list::before {
    left: 13px;
  }

  .page-faq .rail-item__num {
    left: -42px;
    width: 28px;
    height: 28px;
    font-size: 11px;
  }

  .page-faq .faq-hero h1 {
    font-size: 1.75rem;
  }

  .page-faq .faq-escalate__actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }
}
<<<END>>>