.page-faq {
  --tut-col: 720px;
  --tut-rail: 64px;
  --tut-line: rgba(251, 248, 242, 0.16);
  --tut-text: rgba(251, 248, 242, 0.86);
  background: var(--ink);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
}

/* ---------- 头部 ---------- */
.page-faq .tut-head {
  padding-top: 28px;
  padding-bottom: 0;
  border-bottom: 2px solid var(--tut-line);
  background:
    radial-gradient(120% 90% at 8% -20%, rgba(47, 211, 192, 0.16), transparent 62%),
    radial-gradient(90% 80% at 96% 0%, rgba(255, 106, 31, 0.18), transparent 58%),
    var(--ink);
}

.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-cond);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gray);
}

.page-faq .crumbs a {
  color: var(--gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t1) var(--ease), border-color var(--t1) var(--ease);
}

.page-faq .crumbs a:hover,
.page-faq .crumbs a:focus-visible {
  color: var(--orange-soft);
  border-bottom-color: var(--orange-soft);
}

.page-faq .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 26px 0 0;
  font-family: var(--font-cond);
  font-style: italic;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.16em;
  color: var(--orange-soft);
}

.page-faq .eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--orange);
}

.page-faq .tut-h1 {
  margin: 16px 0 0;
  font-size: clamp(32px, 7.4vw, 70px);
  font-weight: 200;
  line-height: 1.03;
  letter-spacing: -0.02em;
  max-width: 16em;
}

.page-faq .tut-lead {
  margin: 20px 0 0;
  max-width: 36em;
  font-size: 16px;
  color: var(--tut-text);
}

.page-faq .tut-progress {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 36px 0 0;
  padding: 0 0 32px;
  list-style: none;
}

.page-faq .tut-progress__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 10px;
  border-top: 3px solid var(--ink-3);
  font-family: var(--font-cond);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gray);
}

.page-faq .tut-progress__item.is-active {
  border-top-color: var(--orange);
  color: var(--white);
}

.page-faq .tut-progress__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--orange-soft);
}

.page-faq .tut-progress__item:not(.is-active) .tut-progress__no {
  color: var(--gray);
}

/* ---------- 主体两栏 ---------- */
.page-faq .tut-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding-top: 36px;
  padding-bottom: 80px;
}

/* ---------- 索引槽 ---------- */
.page-faq .tut-rail {
  align-self: start;
  min-width: 0;
}

.page-faq .tut-rail ol {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .tut-rail a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 32px;
  padding: 0 8px;
  border: 2px solid var(--rule-strong, rgba(251, 248, 242, 0.34));
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gray);
  text-decoration: none;
  transition: color var(--t1) var(--ease), background var(--t1) var(--ease),
    border-color var(--t1) var(--ease);
}

.page-faq .tut-rail a:hover,
.page-faq .tut-rail a:focus-visible {
  color: var(--ink);
  background: var(--orange);
  border-color: var(--orange);
}

/* ---------- 内容列 ---------- */
.page-faq .tut-col {
  display: flex;
  flex-direction: column;
  gap: 56px;
  min-width: 0;
}

.page-faq .tut-sec {
  scroll-margin-top: 120px;
  min-width: 0;
}

.page-faq .tut-sec__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--tut-line);
}

.page-faq .tut-sec__no {
  flex: none;
  padding: 3px 7px;
  border-radius: 2px;
  background: var(--orange);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.page-faq .tut-sec h2 {
  margin: 0;
  font-size: clamp(21px, 3.6vw, 30px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.page-faq p {
  margin: 0 0 14px;
  color: var(--tut-text);
}

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

.page-faq .tut-link {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

.page-faq .tut-link:hover,
.page-faq .tut-link:focus-visible {
  color: var(--orange-soft);
}

/* ---------- 图片 ---------- */
.page-faq .img-frame {
  margin: 0 0 24px;
  border: 2px solid var(--rule-strong, rgba(251, 248, 242, 0.34));
  box-shadow: var(--shadow-hard);
  overflow: hidden;
  background: var(--ink-2);
}

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

.page-faq .img-frame__cap {
  margin: 10px 0 0;
  padding: 0 4px 10px;
  font-family: var(--font-cond);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray);
}

.page-faq .tut-figure {
  margin-top: 8px;
}

/* ---------- 三步清单 ---------- */
.page-faq .tut-steps {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .tut-step {
  padding: 18px 18px 20px;
  border: 2px solid var(--rule-strong, rgba(251, 248, 242, 0.34));
  border-radius: 2px;
  background: var(--ink-2);
  box-shadow: var(--shadow-soft);
  transition: transform var(--t2) var(--ease), box-shadow var(--t2) var(--ease);
}

.page-faq .tut-step:hover {
  transform: translateY(-4px);
  box-shadow: 4px 4px 0 rgba(2, 10, 16, 0.55);
}

.page-faq .tut-step__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.page-faq .tut-step__no {
  flex: none;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  background: var(--orange);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  border-radius: 2px;
}

.page-faq .tut-step h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .tut-list {
  margin-top: 14px;
  padding: 14px 16px 16px;
  border: 2px solid var(--orange-soft);
  border-radius: 2px;
  background: rgba(255, 106, 31, 0.09);
}

.page-faq .tut-list__tag {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--font-cond);
  font-style: italic;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-faq .tut-list ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .tut-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  color: var(--white);
}

.page-faq .tut-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 2px;
  background: var(--teal);
}

/* ---------- 分屏示意 ---------- */
.page-faq .tut-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 4px 0 22px;
  border: 2px solid var(--rule-strong, rgba(251, 248, 242, 0.34));
  border-radius: 2px;
  background: var(--ink-2);
}

.page-faq .tut-split__pane {
  display: grid;
  place-items: center;
  min-height: 92px;
  padding: 20px 10px;
}

.page-faq .tut-split__pane + .tut-split__pane {
  border-left: 2px solid var(--teal);
}

.page-faq .tut-split__tag {
  font-family: var(--font-cond);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--gray);
}

/* ---------- 要点列表 ---------- */
.page-faq .tut-facts {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--tut-line);
}

.page-faq .tut-facts li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 2px solid var(--tut-line);
  font-size: 15px;
  color: var(--tut-text);
}

.page-faq .tut-facts__k {
  display: inline-block;
  font-family: var(--font-cond);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--teal);
}

/* ---------- 核对顺序 ---------- */
.page-faq .tut-order {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

.page-faq .tut-order li {
  display: flex;
  gap: 14px;
  padding: 14px 16px;
  border-left: 4px solid var(--teal);
  background: rgba(47, 211, 192, 0.08);
}

.page-faq .tut-order__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--teal);
  line-height: 1.6;
}

.page-faq .tut-order p {
  margin: 0;
  font-size: 15px;
}

.page-faq .tut-order strong {
  color: var(--white);
  font-weight: 700;
}

/* ---------- 场景选择 ---------- */
.page-faq .tut-pick {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .tut-pick__item {
  padding: 16px 18px;
  border: 2px solid var(--rule, rgba(251, 248, 242, 0.16));
  border-left: 6px solid var(--indigo);
  border-radius: 2px;
  background: rgba(59, 52, 134, 0.18);
}

.page-faq .tut-pick__item:nth-child(2) {
  border-left-color: var(--teal);
  background: rgba(47, 211, 192, 0.1);
}

.page-faq .tut-pick__item:nth-child(3) {
  border-left-color: var(--wine);
  background: rgba(124, 35, 56, 0.22);
}

.page-faq .tut-pick__scene {
  margin: 0 0 8px;
  font-family: var(--font-cond);
  font-style: italic;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.1em;
  color: var(--white);
}

.page-faq .tut-pick__item p {
  margin: 0 0 10px;
}

.page-faq .tut-pick__to {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--orange-soft);
}

/* ---------- 折叠问答 ---------- */
.page-faq .tut-faq {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .tut-faq details {
  border: 2px solid var(--rule-strong, rgba(251, 248, 242, 0.34));
  border-radius: 2px;
  background: var(--ink-2);
}

.page-faq .tut-faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  color: var(--white);
  transition: color var(--t1) var(--ease);
}

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

.page-faq .tut-faq summary::after {
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  margin-right: 3px;
  border-right: 2px solid var(--orange);
  border-bottom: 2px solid var(--orange);
  transform: rotate(45deg);
  transition: transform var(--t2) var(--ease);
}

.page-faq .tut-faq details[open] summary {
  color: var(--orange-soft);
  border-bottom: 2px solid var(--tut-line);
}

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

.page-faq .tut-faq summary:hover {
  color: var(--orange-soft);
}

.page-faq .tut-faq__body {
  padding: 14px 16px 18px;
}

.page-faq .tut-faq__body p {
  margin: 0;
  font-size: 15px;
}

/* ---------- 收束区 ---------- */
.page-faq .tut-help {
  padding: 20px 18px 22px;
  border: 2px solid var(--rule-strong, rgba(251, 248, 242, 0.34));
  border-radius: 2px;
  background: var(--ink-2);
  box-shadow: var(--shadow-soft);
}

.page-faq .tut-contact {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 20px 0 0;
  border-top: 2px solid var(--tut-line);
}

.page-faq .tut-contact__row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 16px;
  padding: 10px 0;
  border-bottom: 2px solid var(--tut-line);
}

.page-faq .tut-contact dt {
  font-family: var(--font-cond);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gray);
}

.page-faq .tut-contact dd {
  margin: 0;
  font-size: 15px;
  color: var(--white);
}

.page-faq .tut-contact dd.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .tut-facts li {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }

  .page-faq .tut-head {
    padding-top: 36px;
  }

  .page-faq .tut-progress__item {
    font-size: 14px;
  }
}

@media (min-width: 900px) {
  .page-faq .tut-body {
    grid-template-columns: var(--tut-rail) minmax(0, var(--tut-col));
    column-gap: 48px;
    padding-top: 56px;
    padding-bottom: 112px;
  }

  .page-faq .tut-rail {
    position: sticky;
    top: 104px;
  }

  .page-faq .tut-rail ol {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .tut-rail a {
    width: 44px;
    height: 40px;
    padding: 0;
  }

  .page-faq .tut-col {
    gap: 72px;
  }

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

  .page-faq .tut-list {
    padding: 16px 20px 18px;
  }
}

@media (min-width: 1200px) {
  .page-faq .tut-h1 {
    max-width: 14em;
  }

  .page-faq .tut-sec {
    scroll-margin-top: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .tut-step,
  .page-faq .tut-faq summary::after,
  .page-faq .tut-rail a,
  .page-faq .tut-faq summary {
    transition: none;
  }

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