.page-faq {
  --faq-line: #2A2F3D;
  --faq-panel-ink: #3F4759;
  --faq-accent-line: rgba(35, 230, 216, 0.55);
  display: block;
  color: var(--white);
}

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

.page-faq .breadcrumb {
  margin-bottom: clamp(28px, 4vw, 44px);
}

/* ---------- 首屏 ---------- */

.page-faq .page-faq__hero {
  position: relative;
  padding-top: clamp(104px, 13vw, 168px);
  background:
    linear-gradient(160deg, rgba(122, 59, 255, 0.16) 0%, rgba(5, 6, 11, 0) 46%),
    var(--ink);
}

.page-faq .page-faq__hero-grid {
  display: grid;
  gap: clamp(32px, 5vw, 60px);
  align-items: center;
}

.page-faq .page-faq__hero-copy,
.page-faq .page-faq__hero-visual {
  min-width: 0;
}

.page-faq .page-faq__title {
  margin: 14px 0 0;
  font-family: var(--font-cn);
  font-weight: 900;
  font-size: var(--fs-1);
  line-height: 1.08;
  letter-spacing: -0.02em;
  max-width: 18ch;
}

.page-faq .page-faq__title::after {
  content: "";
  display: block;
  width: 84px;
  height: 3px;
  margin-top: 22px;
  background: var(--grad);
}

.page-faq .page-faq__hero-copy .en-label {
  display: block;
  margin-top: 18px;
  letter-spacing: 0.14em;
}

.page-faq .page-faq__hero-copy .lede {
  margin-top: 20px;
  max-width: 42ch;
}

.page-faq .page-faq__hero-visual {
  position: relative;
  margin: 0;
  border: 1px solid var(--faq-line);
  background: var(--hold);
  overflow: hidden;
}

.page-faq .page-faq__hero-visual::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 2px;
  background: var(--grad);
  animation: page-faq-scan 8s linear infinite;
  z-index: 1;
}

.page-faq .page-faq__hero-visual img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

@keyframes page-faq-scan {
  0% { top: 0; }
  50% { top: calc(100% - 2px); }
  100% { top: 0; }
}

/* ---------- 阶段跳转胶囊 ---------- */

.page-faq .page-faq__phases {
  margin-top: clamp(40px, 6vw, 72px);
}

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

.page-faq .page-faq__phase-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border: 1px solid var(--faq-line);
  border-radius: var(--pill);
  color: var(--grey);
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  letter-spacing: 0.12em;
  text-decoration: none;
  transition: border-color 220ms var(--ease), color 220ms var(--ease), background-color 220ms var(--ease);
}

.page-faq .page-faq__phase-link .mono {
  color: var(--violet);
  letter-spacing: 0.1em;
}

.page-faq .page-faq__phase-link:hover,
.page-faq .page-faq__phase-link:focus-visible {
  border-color: var(--cyan);
  color: var(--white);
  background: rgba(35, 230, 216, 0.06);
}

/* ---------- 竖列与轨道 ---------- */

.page-faq .page-faq__stream {
  position: relative;
}

.page-faq .page-faq__stage {
  position: relative;
  padding-left: 18px;
}

.page-faq .page-faq__stage::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--faq-line);
}

.page-faq .page-faq__stage-head {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 14px;
  row-gap: 4px;
  align-items: baseline;
  margin: 0 0 10px;
}

.page-faq .page-faq__stage-no {
  grid-row: span 2;
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1;
  color: var(--violet);
  letter-spacing: 0.02em;
}

.page-faq .page-faq__stage-title {
  margin: 0;
  font-family: var(--font-cn);
  font-weight: 900;
  font-size: var(--fs-3);
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-faq .page-faq__stage-en {
  grid-column: 2;
  letter-spacing: 0.14em;
}

.page-faq .page-faq__stage-lede {
  margin: 0 0 clamp(20px, 3vw, 32px);
  max-width: 58ch;
  font-size: var(--fs-5);
  line-height: 1.85;
  color: var(--grey);
}

/* ---------- 可展开条目 ---------- */

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

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

.page-faq .page-faq__item:hover {
  background: rgba(122, 59, 255, 0.05);
}

.page-faq .page-faq__head {
  display: grid;
  grid-template-columns: auto 1fr 20px;
  gap: 14px;
  align-items: center;
  width: 100%;
  padding: 18px 8px;
  background: none;
  border: 0;
  color: inherit;
  text-align: left;
  font: inherit;
  cursor: pointer;
}

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

.page-faq .page-faq__code {
  font-size: var(--fs-6);
  letter-spacing: 0.12em;
  color: var(--grey);
  transition: color 220ms var(--ease);
}

.page-faq .page-faq__head-text {
  font-family: var(--font-cn);
  font-weight: 500;
  font-size: clamp(16px, 1.25vw, 19px);
  line-height: 1.5;
  color: var(--white);
  transition: color 220ms var(--ease);
}

.page-faq .page-faq__head:hover .page-faq__head-text {
  color: var(--cyan);
}

.page-faq .page-faq__arrow {
  font-size: 18px;
  line-height: 1;
  color: var(--grey);
  text-align: center;
  transition: transform 220ms var(--ease), color 220ms var(--ease);
}

.page-faq .page-faq__item[data-open="true"] .page-faq__code {
  color: var(--cyan);
}

.page-faq .page-faq__item[data-open="true"] .page-faq__arrow {
  transform: rotate(90deg);
  color: var(--cyan);
}

.page-faq .expandable__body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 220ms var(--ease);
}

.page-faq .expandable__inner {
  overflow: hidden;
  min-height: 0;
}

.page-faq .page-faq__item[data-open="true"] .expandable__body {
  grid-template-rows: 1fr;
}

/* 展开后的浅色动作面板 */

.page-faq .page-faq__panel {
  margin: 0 8px 20px;
  padding: 20px 20px 18px;
  background: var(--paper);
  border-left: 2px solid var(--violet);
  border-radius: 0;
}

.page-faq .page-faq__steps {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .page-faq__steps li {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 12px;
  font-size: var(--fs-body);
  line-height: 1.72;
  color: var(--faq-panel-ink);
}

.page-faq .page-faq__step-no {
  color: var(--violet);
  font-size: var(--fs-6);
  letter-spacing: 0.12em;
  padding-top: 4px;
}

.page-faq .page-faq__more {
  display: inline-block;
  margin-top: 16px;
  padding-bottom: 2px;
  color: var(--violet);
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  letter-spacing: 0.1em;
  text-decoration: none;
  border-bottom: 1px solid rgba(122, 59, 255, 0.4);
}

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

/* ---------- 横贯对照图 ---------- */

.page-faq .page-faq__wide {
  margin: clamp(32px, 5vw, 56px) 0 0;
  border: 1px solid var(--faq-line);
  background: var(--hold);
}

.page-faq .page-faq__wide img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .page-faq__wide-cap {
  padding: 14px 16px;
  border-top: 1px solid var(--faq-line);
  font-family: var(--font-serif);
  font-size: var(--fs-5);
  line-height: 1.7;
  color: var(--grey);
}

/* ---------- 人工协助 ---------- */

.page-faq .page-faq__support {
  background:
    linear-gradient(200deg, rgba(35, 230, 216, 0.08) 0%, rgba(5, 6, 11, 0) 52%),
    var(--hold);
  border-top: 1px solid var(--faq-line);
}

.page-faq .page-faq__support .page-faq__stage-head {
  margin-bottom: 24px;
}

.page-faq .page-faq__support-grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-faq .page-faq__support-copy p {
  margin: 0 0 16px;
  max-width: 46ch;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--grey);
}

.page-faq .page-faq__notice {
  padding: 14px 0 14px 16px;
  border-left: 2px solid var(--amber);
  color: var(--white) !important;
  font-size: var(--fs-5) !important;
}

.page-faq .page-faq__channels {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--faq-line);
  background: rgba(5, 6, 11, 0.6);
}

.page-faq .page-faq__channels li {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--faq-line);
}

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

.page-faq .page-faq__channel-key {
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--grey);
}

.page-faq .page-faq__channel-val {
  font-family: var(--font-mono);
  font-size: var(--fs-5);
  line-height: 1.7;
  color: var(--white);
  word-break: break-word;
}

.page-faq .page-faq__support-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: clamp(28px, 4vw, 40px) 0 0;
}

/* ---------- 响应式 ---------- */

@media (min-width: 560px) {
  .page-faq .page-faq__channels li {
    grid-template-columns: 110px 1fr;
    gap: 16px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-faq .page-faq__hero-grid {
    grid-template-columns: 5fr 7fr;
  }

  .page-faq .page-faq__stage {
    padding-left: 40px;
  }

  .page-faq .page-faq__stage-head {
    column-gap: 22px;
  }

  .page-faq .page-faq__support-grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }
}

@media (max-width: 599px) {
  .page-faq .page-faq__head {
    gap: 10px;
    padding: 16px 4px;
  }

  .page-faq .page-faq__panel {
    margin: 0 4px 18px;
    padding: 16px 14px 14px;
  }

  .page-faq .page-faq__steps li {
    grid-template-columns: 24px 1fr;
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .page-faq__hero-visual::before {
    animation: none;
    top: 0;
  }

  .page-faq .expandable__body,
  .page-faq .page-faq__arrow,
  .page-faq .page-faq__head-text,
  .page-faq .page-faq__phase-link {
    transition: none;
  }
}
<<<END>>>