.page-faq {
  --faq-aside-w: 248px;
  --faq-flow-w: 68ch;
  position: relative;
  padding-bottom: clamp(48px, 7vw, 96px);
  background:
    linear-gradient(180deg, rgba(17, 42, 51, 0.55) 0%, rgba(11, 18, 32, 0) 460px),
    var(--c-bg);
  color: var(--c-line);
}

.page-faq .faq-shell {
  padding-top: clamp(18px, 2.4vw, 32px);
}

.page-faq .breadcrumb {
  margin-bottom: clamp(18px, 2.6vw, 30px);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  display: grid;
  gap: clamp(12px, 1.8vw, 20px);
  max-width: 76ch;
  padding-bottom: clamp(24px, 3.4vw, 40px);
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5.2vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-weight: 800;
  color: var(--c-line);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(0.98rem, 1.6vw, 1.08rem);
  line-height: 1.7;
  color: rgba(244, 241, 232, 0.82);
}

.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 布局 ---------- */

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  margin-top: clamp(26px, 3.6vw, 44px);
}

.page-faq .faq-flow {
  max-width: var(--faq-flow-w);
  min-width: 0;
}

/* ---------- 步骤流 ---------- */

.page-faq .faq-section {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
  padding-block: clamp(28px, 4vw, 46px);
  border-bottom: 1px solid var(--hairline);
  scroll-margin-top: 88px;
}

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

.page-faq .faq-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
}

.page-faq .faq-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-yellow);
  padding: 2px 8px;
  border: 1px solid rgba(242, 194, 48, 0.45);
  border-radius: var(--pill);
  line-height: 1.6;
}

.page-faq .faq-head .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.28rem, 3.2vw, 1.9rem);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--c-line);
  flex: 1 1 16ch;
  min-width: 0;
}

.page-faq .faq-text {
  margin: 0;
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(244, 241, 232, 0.8);
}

.page-faq .faq-text--small {
  font-size: 0.92rem;
  line-height: 1.7;
  color: rgba(244, 241, 232, 0.68);
}

.page-faq .faq-inline-link {
  display: inline-block;
  margin-left: 6px;
  color: var(--c-water);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  letter-spacing: 0.02em;
  border-bottom: 1px solid rgba(78, 140, 138, 0.5);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-faq .faq-inline-link:hover,
.page-faq .faq-inline-link:focus-visible {
  color: var(--c-line);
  border-bottom-color: var(--c-line);
}

/* ---------- 并置卡 ---------- */

.page-faq .faq-pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(12px, 1.6vw, 18px);
}

.page-faq .faq-card {
  display: grid;
  gap: 10px;
  padding: clamp(16px, 2.2vw, 22px);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-lg);
  background: linear-gradient(158deg, rgba(17, 42, 51, 0.92), rgba(11, 18, 32, 0.72));
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-faq .faq-card--alt {
  background: linear-gradient(158deg, rgba(11, 18, 32, 0.9), rgba(17, 42, 51, 0.72));
  border-color: rgba(78, 140, 138, 0.45);
}

.page-faq .faq-card:hover {
  transform: translateY(-4px);
  border-color: rgba(242, 194, 48, 0.55);
}

.page-faq .faq-card__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-gray);
  text-transform: uppercase;
}

.page-faq .faq-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.4vw, 1.32rem);
  line-height: 1.3;
  font-weight: 800;
  color: var(--c-line);
}

.page-faq .faq-card__foot {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--c-gray);
  padding-top: 8px;
  border-top: 1px solid var(--hairline);
}

.page-faq .faq-mini {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .faq-mini li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 9px;
  align-items: start;
  font-size: 0.94rem;
  line-height: 1.62;
  color: rgba(244, 241, 232, 0.82);
}

.page-faq .faq-mini__n {
  display: inline-grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: var(--pill);
  border: 1px solid var(--hairline-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-yellow);
  line-height: 1;
}

/* ---------- 配图 ---------- */

.page-faq .faq-figure {
  margin: 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.page-faq .faq-figure--contact img {
  border-radius: var(--radius-md);
}

.page-faq .faq-figure .media-caption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--c-gray);
}

/* ---------- 版本四栏 ---------- */

.page-faq .faq-specs {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(12px, 1.8vw, 18px);
}

.page-faq .faq-spec {
  display: grid;
  gap: 6px;
  padding-top: 12px;
  border-top: 2px solid var(--c-water);
}

.page-faq .faq-spec--warn {
  border-top-color: var(--c-yellow);
}

.page-faq .faq-spec__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-gray);
}

.page-faq .faq-spec p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.68;
  color: rgba(244, 241, 232, 0.8);
}

/* ---------- 编号步骤 ---------- */

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(12px, 1.8vw, 18px);
}

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: clamp(14px, 1.8vw, 18px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--hairline);
  background: rgba(17, 42, 51, 0.5);
}

.page-faq .faq-steps__n {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: var(--c-red);
  color: var(--c-line);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
}

.page-faq .faq-steps__item:nth-child(2) .faq-steps__n {
  background: var(--c-yellow);
  color: var(--c-black);
}

.page-faq .faq-steps__t {
  margin: 0 0 4px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-line);
}

.page-faq .faq-steps__item p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.7;
  color: rgba(244, 241, 232, 0.78);
}

/* ---------- 表格 ---------- */

.page-faq .faq-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.page-faq .faq-table__caption {
  caption-side: top;
  text-align: left;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-gray);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--hairline);
  vertical-align: top;
  line-height: 1.6;
}

.page-faq .faq-table thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-paper);
  background: rgba(17, 42, 51, 0.85);
  white-space: nowrap;
}

.page-faq .faq-table tbody tr:nth-child(even) {
  background: rgba(244, 241, 232, 0.035);
}

.page-faq .faq-table tbody th {
  font-weight: 700;
  color: var(--c-line);
  border-left: 3px solid var(--c-water);
  white-space: nowrap;
}

.page-faq .faq-table tbody td {
  color: rgba(244, 241, 232, 0.78);
}

.page-faq .faq-table tbody tr.is-key th {
  border-left-color: var(--c-yellow);
  color: var(--c-yellow);
}

.page-faq .faq-table tbody tr.is-key td:first-of-type {
  color: var(--c-line);
}

/* ---------- 图例 ---------- */

.page-faq .faq-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--c-gray);
}

.page-faq .faq-legend span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.page-faq .faq-legend i {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 3px;
}

.page-faq .faq-legend__red {
  background: var(--c-red);
}

.page-faq .faq-legend__yellow {
  background: var(--c-yellow);
}

.page-faq .faq-legend__water {
  background: var(--c-water);
}

/* ---------- 折叠排查 ---------- */

.page-faq .faq-acc {
  border-top: 1px solid var(--hairline-strong);
}

.page-faq .faq-acc details {
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-acc summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 15px 34px 15px 0;
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--c-line);
  transition: color 0.25s var(--ease);
}

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

.page-faq .faq-acc summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 13px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.4;
  color: var(--c-red);
}

.page-faq .faq-acc details[open] summary::after {
  content: "–";
  color: var(--c-yellow);
}

.page-faq .faq-acc summary:hover,
.page-faq .faq-acc summary:focus-visible {
  color: var(--c-yellow);
}

.page-faq .faq-acc__body {
  padding: 0 0 16px;
  font-size: 0.93rem;
  line-height: 1.75;
  color: rgba(244, 241, 232, 0.78);
  max-width: 62ch;
}

/* ---------- 客服区 ---------- */

.page-faq .faq-support {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
  margin-top: clamp(28px, 4vw, 46px);
  padding: clamp(20px, 3vw, 34px);
  border-radius: var(--radius-xl);
  border: 1px solid var(--hairline-strong);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(226, 58, 46, 0.16) 0%, rgba(226, 58, 46, 0) 62%),
    linear-gradient(150deg, rgba(17, 42, 51, 0.95), rgba(5, 8, 13, 0.92));
  scroll-margin-top: 88px;
}

.page-faq .faq-contact {
  display: grid;
  gap: 10px;
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(244, 241, 232, 0.12);
}

.page-faq .faq-contact__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-contact__k {
  flex: 0 0 auto;
  min-width: 72px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-gray);
}

.page-faq .faq-contact__v {
  flex: 1 1 12ch;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--c-line);
  word-break: break-word;
}

.page-faq .faq-contact .copy-btn {
  flex: 0 0 auto;
}

/* ---------- 返回顶部 ---------- */

.page-faq .page-faq__top {
  display: flex;
  justify-content: flex-end;
  margin-top: clamp(24px, 3.4vw, 40px);
}

/* ---------- 侧边旁注 ---------- */

.page-faq .faq-aside {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.page-faq .faq-toc {
  padding: 16px 14px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  background: rgba(17, 42, 51, 0.55);
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-gray);
}

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

.page-faq .faq-toc__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 7px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  line-height: 1.4;
  color: var(--c-paper);
  text-decoration: none;
  transition: background 0.25s var(--ease), color 0.25s var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  background: rgba(78, 140, 138, 0.2);
  color: var(--c-line);
}

.page-faq .faq-toc__n {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-water);
}

.page-faq .faq-aside__note {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--c-yellow);
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--c-gray);
}

/* ---------- 响应式 ---------- */

@media (min-width: 560px) {
  .page-faq .faq-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) var(--faq-aside-w);
    align-items: start;
  }

  .page-faq .faq-aside {
    position: sticky;
    top: 92px;
  }

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

@media (min-width: 1180px) {
  .page-faq .faq-hero__title {
    font-size: clamp(2.4rem, 4.4vw, 3.6rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-card,
  .page-faq .faq-toc__link,
  .page-faq .faq-inline-link,
  .page-faq .faq-acc summary {
    transition: none;
  }

  .page-faq .faq-card:hover {
    transform: none;
  }
}
<<<END>>>