.page-faq {
  --faq-line: rgba(244, 240, 232, 0.14);
  --faq-line-soft: rgba(244, 240, 232, 0.08);
  --faq-line-dark: rgba(18, 19, 22, 0.14);
  --faq-red-wash: rgba(200, 16, 46, 0.07);
  color: var(--text);
}

.page-faq .kicker {
  margin: 0 0 12px;
}

.page-faq .section-note {
  margin: 0 0 28px;
  max-width: 60ch;
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.75;
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 5vw, 58px) 0 clamp(28px, 4vw, 48px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -30% -12% auto -12%;
  height: 150%;
  background:
    radial-gradient(58% 58% at 20% 16%, rgba(200, 16, 46, 0.32), transparent 64%),
    radial-gradient(46% 50% at 80% 4%, rgba(201, 162, 39, 0.15), transparent 70%);
  pointer-events: none;
}

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

.page-faq .faq-hero h1 {
  margin: 0 0 20px;
  max-width: 18ch;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(32px, 6.4vw, 62px);
  line-height: 1.14;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero .lead {
  max-width: 62ch;
  margin: 0 0 26px;
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--text-faint);
}

.page-faq .faq-hero__meta-item {
  position: relative;
  padding-left: 14px;
}

.page-faq .faq-hero__meta-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  background: var(--amber);
}

/* 自查四步 */
.page-faq .faq-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--faq-line);
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-step {
  padding: 22px 20px 26px;
  background: var(--ink);
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-step:hover {
  background: var(--ink-2);
}

.page-faq .faq-step__num {
  display: block;
  margin-bottom: 12px;
  color: var(--amber);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.page-faq .faq-step__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 20px;
  line-height: 1.35;
}

.page-faq .faq-step__text {
  margin: 0;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.75;
}

/* 索引 + 问答 */
.page-faq .faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-faq .faq-rail {
  padding: 20px 18px;
  border: 1px solid var(--faq-line-soft);
}

.page-faq .faq-rail__title {
  margin: 0 0 14px;
  color: var(--text-faint);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-faq .faq-rail .index-list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail .index-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 8px 9px 0;
  color: var(--text-dim);
  font-size: 15px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-faq .faq-rail .index-link__num {
  color: var(--amber);
  font-size: 12px;
}

.page-faq .faq-rail .index-link[aria-current="true"] {
  color: var(--paper);
}

.page-faq .faq-rail .index-link[aria-current="true"] .index-link__num {
  color: var(--red);
}

.page-faq .faq-rail__tip {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--faq-line-soft);
  color: var(--text-faint);
  font-size: 13px;
  line-height: 1.7;
}

.page-faq .faq-group {
  margin-bottom: clamp(34px, 5vw, 56px);
}

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

.page-faq .faq-group__head {
  margin-bottom: 8px;
}

.page-faq .faq-group__head h2 {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.28;
}

/* 折叠问答 */
.page-faq .qa-item {
  border-top: 1px solid var(--faq-line);
}

.page-faq .qa-item:last-of-type {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .qa-item__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 17px 0;
  cursor: pointer;
  list-style: none;
  transition: color var(--dur) var(--ease);
}

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

.page-faq .qa-item__head:hover .qa-item__title {
  color: var(--paper);
}

.page-faq .qa-item__head:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

.page-faq .qa-item__num {
  flex: 0 0 auto;
  color: var(--warm);
  font-size: 11.5px;
  letter-spacing: 0.04em;
}

.page-faq .qa-item__title {
  flex: 1 1 auto;
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.55;
  color: var(--text);
  transition: color var(--dur) var(--ease);
}

.page-faq .qa-item__toggle {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-left: 4px;
  transition: transform var(--dur) var(--ease);
}

.page-faq .qa-item__toggle::before,
.page-faq .qa-item__toggle::after {
  content: "";
  position: absolute;
  background: var(--red);
}

.page-faq .qa-item__toggle::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 1.5px;
}

.page-faq .qa-item__toggle::after {
  left: 7px;
  top: 0;
  width: 1.5px;
  height: 16px;
  transition: opacity var(--dur) var(--ease);
}

.page-faq .qa-item[open] .qa-item__toggle::after {
  opacity: 0;
}

.page-faq .qa-item__body {
  padding: 0 0 20px 0;
}

.page-faq .qa-item__body p {
  margin: 0 0 12px;
  max-width: 66ch;
  color: var(--text-dim);
  font-size: 15.5px;
  line-height: 1.8;
}

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

.page-faq .qa-item__steps {
  margin: 0;
  padding: 0 0 0 18px;
  max-width: 64ch;
  color: var(--text-dim);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-faq .qa-item__steps li {
  margin-bottom: 6px;
}

.page-faq .qa-item__steps li::marker {
  color: var(--amber);
}

/* 图片 */
.page-faq .faq-figure,
.page-faq .registry-figure {
  margin: 18px 0 26px;
}

.page-faq .faq-figure .media__img,
.page-faq .registry-figure .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .media__caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-faint);
}

/* 版本对照表 */
.page-faq .registry-band {
  padding: clamp(34px, 5.5vw, 68px) 0;
  border-top: 1px solid var(--faq-line-soft);
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .registry-band__head {
  margin-bottom: 22px;
}

.page-faq .registry-band__head h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.26;
}

.page-faq .registry-band__intro {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.8;
  opacity: 0.78;
}

.page-faq .registry-figure .media__caption {
  color: rgba(18, 19, 22, 0.55);
}

.page-faq .registry-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .registry-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  font-size: 14.5px;
  line-height: 1.65;
}

.page-faq .registry-table th {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: rgba(18, 19, 22, 0.55);
  border-bottom: 1px solid var(--faq-line-dark);
  white-space: nowrap;
}

.page-faq .registry-table td {
  padding: 18px 14px;
  vertical-align: top;
  border-bottom: 1px solid rgba(18, 19, 22, 0.1);
  color: rgba(18, 19, 22, 0.82);
}

.page-faq .registry-table tbody tr {
  transition: background var(--dur) var(--ease);
}

.page-faq .registry-table tbody tr:hover {
  background: var(--faq-red-wash);
}

.page-faq .registry-table__ver {
  white-space: nowrap;
  color: rgba(18, 19, 22, 0.9);
  letter-spacing: 0.02em;
}

.page-faq .registry-table tr.is-current {
  background: rgba(200, 16, 46, 0.06);
  box-shadow: inset 3px 0 0 var(--red);
}

.page-faq .registry-table tr.is-current td {
  color: rgba(18, 19, 22, 0.92);
}

.page-faq .registry-badge {
  display: inline-block;
  margin-left: 6px;
  padding: 2px 7px;
  background: var(--red);
  color: var(--paper-2);
  font-family: var(--font-body);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

/* 文档编号 */
.page-faq .numbers-band__inner {
  display: grid;
  gap: 28px;
}

.page-faq .numbers-band__lead h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.26;
}

.page-faq .numbers-band__lead p {
  margin: 0 0 12px;
  max-width: 60ch;
  color: var(--text-dim);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-faq .numbers-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--faq-line-soft);
}

.page-faq .numbers-item {
  padding: 18px 18px 20px;
  background: var(--ink-2);
  transition: background var(--dur) var(--ease);
}

.page-faq .numbers-item:hover {
  background: var(--ink-3);
}

.page-faq .numbers-item__no {
  margin: 0 0 8px;
  color: var(--amber);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-faq .numbers-item__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 18px;
  line-height: 1.4;
}

.page-faq .numbers-item__text {
  margin: 0;
  color: var(--text-dim);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-faq .numbers-band__foot {
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid var(--faq-line-soft);
  color: var(--text-faint);
  font-size: 14px;
  line-height: 1.8;
}

.page-faq .numbers-band__foot a,
.page-faq .support-card__note a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--red);
}

.page-faq .numbers-band__foot a:hover,
.page-faq .support-card__note a:hover {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* 联系支持 */
.page-faq .support-band__inner {
  display: grid;
  gap: 28px;
}

.page-faq .support-band__text h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.26;
}

.page-faq .support-band__text p {
  margin: 0 0 18px;
  max-width: 62ch;
  color: var(--text-dim);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-faq .support-steps {
  margin: 0;
  padding: 0 0 0 18px;
  max-width: 58ch;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .support-steps li {
  margin-bottom: 6px;
}

.page-faq .support-steps li::marker {
  color: var(--amber);
  font-family: var(--font-mono);
}

.page-faq .support-card {
  padding: 22px 20px;
  border: 1px solid var(--faq-line-soft);
  align-self: start;
}

.page-faq .support-card__label {
  margin: 0 0 14px;
  color: var(--amber);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.page-faq .support-card__list {
  margin: 0;
}

.page-faq .support-card__row {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 10px;
  padding: 11px 0;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .support-card__row:first-child {
  border-top: none;
  padding-top: 0;
}

.page-faq .support-card__row dt {
  color: var(--text-faint);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-faq .support-card__row dd {
  margin: 0;
  color: var(--text);
  font-size: 15px;
  line-height: 1.65;
  word-break: break-word;
}

.page-faq .support-card__row dd a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .support-card__row dd a:hover {
  border-bottom-color: var(--amber);
  color: var(--amber);
}

.page-faq .support-card__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--faq-line-soft);
  color: var(--text-faint);
  font-size: 13px;
  line-height: 1.75;
}

/* 桌面 */
@media (min-width: 760px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-hero .lead {
    font-size: 17px;
  }

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

@media (min-width: 1024px) {
  .page-faq .faq-grid {
    grid-template-columns: var(--rail) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 60px);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-step {
    padding: 26px 22px 30px;
  }

  .page-faq .qa-item__title {
    font-size: 17px;
  }

  .page-faq .numbers-band__inner {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .numbers-band__foot {
    grid-column: 1 / -1;
  }

  .page-faq .support-band__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .registry-table td {
    padding: 20px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step,
  .page-faq .qa-item__toggle,
  .page-faq .qa-item__title,
  .page-faq .registry-table tbody tr,
  .page-faq .numbers-item,
  .page-faq .faq-rail .index-link {
    transition: none;
  }
}

@media print {
  .page-faq .faq-hero::before,
  .page-faq .faq-rail,
  .page-faq .faq-figure,
  .page-faq .registry-figure,
  .page-faq .qa-item__toggle {
    display: none;
  }

  .page-faq,
  .page-faq .registry-band {
    color: #121316;
    background: #fff;
    border: none;
  }

  .page-faq .registry-table th,
  .page-faq .registry-table td {
    border: 1px solid #999;
    color: #121316;
  }

  .page-faq .qa-item {
    break-inside: avoid;
  }

  .page-faq .qa-item__body {
    display: block;
  }
}
<<<END>>>