.page-faq {
  --faq-grid: rgba(60, 90, 122, .26);
  --faq-cyan-soft: rgba(46, 242, 196, .16);
  --faq-dash: rgba(60, 90, 122, .6);
  padding-bottom: 72px;
}

/* 首屏 */
.page-faq .tut-hero {
  position: relative;
  overflow: hidden;
  padding: 28px 0 44px;
}
.page-faq .tut-hero::before {
  content: "";
  position: absolute;
  inset: -40px -24px auto -24px;
  height: 360px;
  background-image:
    linear-gradient(to right, var(--faq-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--faq-grid) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(120% 92% at 10% 0%, #000 0%, transparent 74%);
  mask-image: radial-gradient(120% 92% at 10% 0%, #000 0%, transparent 74%);
  pointer-events: none;
  z-index: 0;
}
.page-faq .tut-hero > * {
  position: relative;
  z-index: 1;
}
.page-faq .tut-hero .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--cyan);
  margin: 0;
}
.page-faq .tut-hero h1 {
  margin: 12px 0 0;
  max-width: 18em;
  font-size: clamp(30px, 5.4vw, 56px);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.12;
}
.page-faq .tut-hero__lede {
  margin: 18px 0 0;
  max-width: 44em;
  font-size: clamp(16px, 1.8vw, 18px);
  line-height: 1.8;
}
.page-faq .tut-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 18px 24px;
  margin: 32px 0 0;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.page-faq .tut-stat {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0 8px;
}
.page-faq .tut-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
}
.page-faq .tut-stat__unit {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
}
.page-faq .tut-stat__label {
  flex: 1 0 100%;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}
.page-faq .tut-hero__actions {
  margin-top: 26px;
}

/* 双栏骨架 */
.page-faq .tut-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}
.page-faq .tut-rail__hold {
  display: grid;
  gap: 14px;
}
.page-faq .tut-rail-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 16px 18px;
  background: linear-gradient(180deg, rgba(6, 18, 42, .74), rgba(11, 31, 58, .34));
}
.page-faq .tut-rail-card__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--muted);
}
.page-faq .tut-rail-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .04em;
  color: var(--gold);
}
.page-faq .tut-rail-card__state {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--cyan);
}
.page-faq .tut-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px var(--faq-cyan-soft);
}
.page-faq .tut-rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}
.page-faq .tut-rail-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 7px;
  border-bottom: 1px dashed var(--faq-dash);
  color: var(--paper);
}
.page-faq .tut-rail-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}
.page-faq .tut-rail-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}
.page-faq .tut-rail-nav a {
  display: inline-block;
  font-size: 13px;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-cyan-soft);
  padding-bottom: 1px;
}
.page-faq .tut-rail-nav a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* 区块 */
.page-faq .tut-block {
  padding: 42px 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-safe) + 14px);
}
.page-faq .tut-main > .tut-block:first-child {
  padding-top: 14px;
  border-top: 0;
}
.page-faq .tut-block__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--cyan);
}
.page-faq .tut-block__title {
  margin: 12px 0 0;
  max-width: 22em;
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.2;
}
.page-faq .tut-block__lede {
  margin: 14px 0 0;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

/* 前置检查 */
.page-faq .pf-check {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}
.page-faq .pf-check__item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: rgba(6, 18, 42, .55);
  overflow: hidden;
}
.page-faq .pf-check__item::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  opacity: .55;
}
.page-faq .pf-check__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
}
.page-faq .pf-check__title {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -.01em;
}
.page-faq .pf-check__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}
.page-faq .pf-check__verify {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--faq-dash);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--paper);
}

/* 表格 */
.page-faq .table-scroll {
  overflow-x: auto;
  margin-top: 24px;
}
.page-faq .pf-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 15px;
}
.page-faq .pf-table__caption {
  text-align: left;
  padding-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}
.page-faq .pf-table th,
.page-faq .pf-table td {
  text-align: left;
  vertical-align: top;
  padding: 13px 14px;
  border-bottom: 1px solid rgba(60, 90, 122, .5);
  line-height: 1.6;
}
.page-faq .pf-table thead th {
  padding-top: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  font-weight: 600;
  color: var(--cyan);
  border-bottom: 1px solid var(--cyan);
  white-space: nowrap;
}
.page-faq .pf-table tbody th {
  color: var(--paper);
  font-weight: 800;
  white-space: nowrap;
}
.page-faq .pf-table tbody td {
  color: var(--muted);
}
.page-faq .pf-table .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--paper);
  white-space: nowrap;
}

/* 图 */
.page-faq .pf-figure {
  margin: 26px 0 0;
}
.page-faq .pf-figure .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-m);
  border: 1px solid var(--line);
}

/* 标签页 */
.page-faq .pf-tabs {
  margin-top: 24px;
}
.page-faq .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-faq .tabs__btn {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  padding: 9px 18px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: transparent;
  color: var(--paper);
  cursor: pointer;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}
.page-faq .tabs__btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}
.page-faq .tabs__btn[aria-selected="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--deep-2);
  font-weight: 700;
}
.page-faq .tabs__btn:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}
.page-faq .tabs__panel {
  margin-top: 20px;
}
.page-faq .pf-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 22px;
  background: rgba(6, 18, 42, .52);
}

/* 画质 */
.page-faq .pf-quality__scene {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.8;
}
.page-faq .pf-quality__meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px;
  margin: 0;
}
.page-faq .pf-quality__meta > div {
  border-left: 2px solid var(--faq-cyan-soft);
  padding-left: 12px;
}
.page-faq .pf-quality__meta dt {
  margin: 0 0 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
}
.page-faq .pf-quality__meta dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
}
.page-faq .note {
  margin: 20px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

/* 步骤 */
.page-faq .pf-steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}
.page-faq .pf-step {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px dashed var(--faq-dash);
}
.page-faq .pf-step:last-child {
  border-bottom: 0;
  padding-bottom: 4px;
}
.page-faq .pf-step__no {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}
.page-faq .pf-step__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -.01em;
}
.page-faq .pf-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* 窗口排布示意 */
.page-faq .pf-fig-board {
  display: grid;
  gap: 18px;
}
.page-faq .pf-fig {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  color: var(--cyan);
}
.page-faq .pf-fig text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  fill: currentColor;
}

/* 延迟 */
.page-faq .pf-latency {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 26px;
}
.page-faq .pf-latency__item {
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 24px 22px;
  background:
    radial-gradient(120% 120% at 100% 0%, var(--faq-cyan-soft), transparent 62%),
    rgba(6, 18, 42, .55);
}
.page-faq .pf-latency__num {
  font-family: var(--font-mono);
  font-size: clamp(46px, 9vw, 84px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
  color: var(--paper);
}
.page-faq .pf-latency__unit {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cyan);
}
.page-faq .pf-latency__item p {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}
.page-faq .pf-latency__note {
  margin: 20px 0 0;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* 折叠排查 */
.page-faq .pf-accordion {
  margin-top: 26px;
  border-top: 1px solid var(--line);
}
.page-faq .accordion {
  border-bottom: 1px solid var(--line);
}
.page-faq .accordion__summary {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -.01em;
}
.page-faq .accordion__summary::-webkit-details-marker {
  display: none;
}
.page-faq .accordion__summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--cyan);
}
.page-faq .accordion[open] .accordion__summary::after {
  content: "−";
}
.page-faq .accordion__summary:hover {
  color: var(--cyan);
}
.page-faq .accordion__summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}
.page-faq .accordion__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--cyan);
}
.page-faq .accordion__body {
  padding: 0 0 22px 54px;
}
.page-faq .pf-acc__row {
  margin: 0 0 14px;
}
.page-faq .pf-acc__row:last-child {
  margin-bottom: 0;
}
.page-faq .pf-acc__k {
  display: block;
  margin-bottom: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
}
.page-faq .pf-acc__v {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper);
}

/* 档位衔接卡 */
.page-faq .pf-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 26px;
}
.page-faq .pf-next__card {
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 22px;
  background: rgba(6, 18, 42, .55);
}
.page-faq .pf-next__title {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -.01em;
}
.page-faq .pf-next__text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* 行内链接 */
.page-faq .pf-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan);
  padding-bottom: 1px;
}
.page-faq .pf-link:hover {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* 桌面栅格 */
@media (min-width: 980px) {
  .page-faq .tut-layout {
    grid-template-columns: 258px minmax(0, 1fr);
    gap: 40px;
  }
  .page-faq .tut-rail__hold {
    position: sticky;
    top: calc(var(--header-safe) + 18px);
  }
  .page-faq .tut-block {
    padding: 52px 0;
  }
}

@media (min-width: 820px) {
  .page-faq .pf-check {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .pf-latency {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .pf-next {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-faq .pf-fig-board {
    grid-template-columns: minmax(0, 420px) minmax(0, 1fr);
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .tabs__btn {
    transition: none;
  }
}
</｜｜DSML｜｜ parameter>
</｜｜DSML｜｜ invoke>
</｜｜DSML｜｜ calls>