.page-faq {
  --faq-rail: 76px;
  --faq-panel: #16191E;
  background:
    radial-gradient(circle at 84% 2%, rgba(20, 224, 177, .10), transparent 40%),
    radial-gradient(circle at 8% 30%, rgba(255, 106, 26, .07), transparent 36%),
    linear-gradient(180deg, #0B0C0E 0%, #101319 52%, #0B0C0E 100%);
  color: var(--c-body);
}

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

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding-top: 20px;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--c-gray);
}

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

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--c-line);
}

.page-faq .breadcrumb a {
  color: var(--c-gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--c-mint);
  border-bottom-color: var(--c-mint);
}

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--c-paper);
}

/* ---------- 首屏 ---------- */
.page-faq .tut-hero {
  position: relative;
  padding: 26px 0 46px;
  border-bottom: 1px solid var(--c-line-soft);
}

.page-faq .tut-hero__grid {
  display: grid;
  gap: 30px;
}

.page-faq .tut-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 6.4vw, 52px);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--c-paper);
  text-shadow: 1px 1px 0 rgba(255, 106, 26, .42);
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-faq .tut-hero__lede {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-body);
}

.page-faq .tut-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .tut-hero__aside {
  position: relative;
  overflow: hidden;
  padding: 24px 20px 20px;
  border: 1px solid var(--c-line);
  background: linear-gradient(160deg, rgba(22, 25, 30, .96), rgba(11, 12, 14, .94));
}

.page-faq .tut-hero__aside .radar {
  position: absolute;
  top: -78px;
  right: -78px;
  width: 230px;
  height: 230px;
  opacity: .45;
  pointer-events: none;
}

.page-faq .tut-hero__aside-title {
  position: relative;
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.5;
  color: var(--c-paper);
}

.page-faq .tut-index {
  position: relative;
  display: grid;
  gap: 2px;
}

.page-faq .tut-index__link {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  align-items: baseline;
  gap: 10px;
  padding: 10px 10px;
  border-left: 2px solid transparent;
  color: var(--c-body);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  transition: border-color .18s ease, background-color .18s ease, color .18s ease;
}

.page-faq .tut-index__link:hover,
.page-faq .tut-index__link:focus-visible {
  border-left-color: var(--c-mint);
  background: rgba(20, 224, 177, .09);
  color: var(--c-paper);
}

.page-faq .tut-index__link[aria-current="true"] {
  border-left-color: var(--c-orange);
  background: rgba(255, 106, 26, .10);
  color: var(--c-paper);
}

.page-faq .tut-index__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--c-orange);
}

.page-faq .tut-index__link[aria-current="true"] .tut-index__num {
  color: var(--c-mint);
}

.page-faq .tut-hero__aside-note {
  position: relative;
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--c-line-soft);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-gray);
}

.page-faq .tut-hero__aside-note a {
  color: var(--c-orange-lift);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 154, 60, .45);
}

.page-faq .tut-hero__aside-note a:hover,
.page-faq .tut-hero__aside-note a:focus-visible {
  color: var(--c-mint);
  border-bottom-color: var(--c-mint);
}

/* ---------- 步骤轨道 ---------- */
.page-faq .tut-steps {
  padding: 0;
}

.page-faq .tut-step {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding: 32px 0;
  border-top: 1px solid var(--c-line-soft);
}

.page-faq .tut-step:first-child {
  border-top: 0;
  padding-top: 40px;
}

.page-faq .tut-step__rail {
  display: flex;
  align-items: center;
  gap: 14px;
}

.page-faq .tut-step__num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--c-orange);
}

.page-faq .tut-step__line {
  display: none;
}

.page-faq .tut-step__panel {
  position: relative;
  padding: 22px 18px 24px;
  border: 1px solid var(--c-line);
  background: linear-gradient(180deg, rgba(22, 25, 30, .94), rgba(15, 18, 23, .94));
}

.page-faq .tut-step__panel::before {
  content: "";
  position: absolute;
  top: -1px;
  bottom: -1px;
  left: -1px;
  width: 3px;
  background: linear-gradient(180deg, var(--c-orange), var(--c-orange-lift) 60%, rgba(20, 224, 177, .75));
}

.page-faq .tut-step__head {
  margin-bottom: 18px;
}

.page-faq .tut-step__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 3.6vw, 30px);
  line-height: 1.28;
  color: var(--c-paper);
}

.page-faq .tut-step__meta {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--c-gray);
}

.page-faq .tut-step__lede {
  margin: 0 0 4px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-body);
}

.page-faq .tut-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: tutflow;
  display: grid;
  gap: 12px;
}

.page-faq .tut-flow > li {
  position: relative;
  padding-left: 34px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-body);
}

.page-faq .tut-flow > li::before {
  counter-increment: tutflow;
  content: counter(tutflow);
  position: absolute;
  top: 4px;
  left: 0;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: #05201A;
  background: var(--c-mint);
  border-radius: 50%;
}

.page-faq .tut-flow strong {
  color: var(--c-paper);
  font-weight: 700;
}

.page-faq .tut-flow a {
  color: var(--c-orange-lift);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 154, 60, .45);
}

.page-faq .tut-flow a:hover,
.page-faq .tut-flow a:focus-visible {
  color: var(--c-mint);
  border-bottom-color: var(--c-mint);
}

.page-faq .tut-note {
  margin: 18px 0 0;
  padding: 12px 14px;
  border-left: 2px solid var(--c-mint);
  background: rgba(14, 47, 44, .55);
  font-size: 13.5px;
  line-height: 1.75;
  color: #CFE9E2;
}

.page-faq .tut-figure {
  margin: 22px 0 0;
}

.page-faq .tut-figure .media-frame {
  overflow: hidden;
  border: 1px solid var(--c-line);
  background: #0E1116;
}

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

.page-faq .tut-figure .media-frame__cap {
  padding: 10px 2px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--c-gray);
}

/* ---------- 指标表格 ---------- */
.page-faq .tut-metrics {
  margin-top: 20px;
  border: 1px solid var(--c-line);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .tut-metrics table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
}

.page-faq .tut-metrics caption {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--c-gray);
  border-bottom: 1px solid var(--c-line);
}

.page-faq .tut-metrics th {
  padding: 11px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--c-orange-lift);
  background: rgba(255, 106, 26, .10);
  border-bottom: 1px solid var(--c-line);
  white-space: nowrap;
}

.page-faq .tut-metrics td {
  padding: 13px 14px;
  vertical-align: top;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-body);
  border-bottom: 1px solid var(--c-line-soft);
}

.page-faq .tut-metrics tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .tut-metrics td:first-child {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-mint);
  white-space: nowrap;
}

.page-faq .tut-metrics td:nth-child(2) {
  color: var(--c-paper);
}

/* ---------- 读法提示 ---------- */
.page-faq .tut-tips {
  margin-top: 20px;
  padding: 16px 18px;
  border: 1px dashed var(--c-line);
  background: rgba(22, 25, 30, .6);
}

.page-faq .tut-tips__title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 15px;
  color: var(--c-paper);
}

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

.page-faq .tut-tips__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-body);
}

.page-faq .tut-tips__list li::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 0;
  width: 7px;
  height: 7px;
  background: var(--c-orange);
  transform: rotate(45deg);
}

.page-faq .tut-tips__list strong {
  color: var(--c-paper);
  font-weight: 700;
}

/* ---------- 问答 ---------- */
.page-faq .tut-faq {
  padding: 8px 0 12px;
}

.page-faq .tut-faq__head {
  max-width: 62ch;
}

.page-faq .tut-faq__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 4.6vw, 36px);
  line-height: 1.24;
  color: var(--c-paper);
}

.page-faq .tut-faq__lede {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-gray);
}

.page-faq .tut-faq__list {
  display: grid;
  gap: 10px;
  margin-top: 26px;
}

.page-faq .tut-faq__list .disclosure {
  border: 1px solid var(--c-line);
  background: rgba(22, 25, 30, .85);
  transition: border-color .18s ease;
}

.page-faq .tut-faq__list .disclosure[open] {
  border-color: rgba(20, 224, 177, .55);
}

.page-faq .tut-faq__list .disclosure > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 16px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--c-paper);
  list-style: none;
}

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

.page-faq .tut-faq__list .disclosure > summary::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  background: var(--c-orange);
  transform: rotate(45deg);
  transition: background-color .18s ease;
}

.page-faq .tut-faq__list .disclosure[open] > summary::before {
  background: var(--c-mint);
}

.page-faq .tut-faq__list .disclosure > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--c-gray);
}

.page-faq .tut-faq__list .disclosure[open] > summary::after {
  content: "–";
  color: var(--c-mint);
}

.page-faq .tut-faq__list .disclosure > summary:hover,
.page-faq .tut-faq__list .disclosure > summary:focus-visible {
  background: rgba(255, 106, 26, .07);
}

.page-faq .tut-faq__list .disclosure__panel {
  padding: 0 16px 18px;
}

.page-faq .tut-faq__list .disclosure__panel ol {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 8px;
}

.page-faq .tut-faq__list .disclosure__panel li {
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-body);
}

.page-faq .tut-faq__list .disclosure__panel a {
  color: var(--c-orange-lift);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 154, 60, .45);
}

.page-faq .tut-faq__list .disclosure__panel a:hover,
.page-faq .tut-faq__list .disclosure__panel a:focus-visible {
  color: var(--c-mint);
  border-bottom-color: var(--c-mint);
}

/* ---------- 人工协助 ---------- */
.page-faq .tut-help {
  padding: 20px 0 72px;
}

.page-faq .tut-help__panel {
  position: relative;
  overflow: hidden;
  padding: 28px 20px;
  border: 1px solid var(--c-line);
  background:
    radial-gradient(circle at 96% 0%, rgba(255, 106, 26, .16), transparent 48%),
    linear-gradient(150deg, rgba(22, 25, 30, .96), rgba(11, 12, 14, .96));
}

.page-faq .tut-help__panel::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -80px;
  width: 190px;
  height: 190px;
  border: 1px solid rgba(20, 224, 177, .28);
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .tut-help__body {
  position: relative;
  z-index: 1;
  max-width: 68ch;
}

.page-faq .tut-help__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 3.8vw, 30px);
  line-height: 1.28;
  color: var(--c-paper);
}

.page-faq .tut-help__lede {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--c-body);
}

.page-faq .tut-help__lede a {
  color: var(--c-orange-lift);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 154, 60, .45);
}

.page-faq .tut-help__lede a:hover,
.page-faq .tut-help__lede a:focus-visible {
  color: var(--c-mint);
  border-bottom-color: var(--c-mint);
}

.page-faq .tut-help__list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-faq .tut-help__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-body);
}

.page-faq .tut-help__list li::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  width: 10px;
  height: 2px;
  background: var(--c-mint);
}

.page-faq .tut-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .tut-hero__actions .btn,
  .page-faq .tut-help__actions .btn {
    min-width: 168px;
  }

  .page-faq .tut-step__panel {
    padding: 26px 24px 28px;
  }

  .page-faq .tut-help__panel {
    padding: 34px 32px;
  }
}

@media (min-width: 900px) {
  .page-faq .tut-hero {
    padding: 34px 0 60px;
  }

  .page-faq .tut-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(300px, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .tut-step {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 32px;
    padding: 48px 0;
  }

  .page-faq .tut-step__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }

  .page-faq .tut-step__num {
    font-size: 40px;
  }

  .page-faq .tut-step__line {
    display: block;
    width: 2px;
    flex: 1 1 auto;
    min-height: 64px;
    margin: 16px 0 0 14px;
    background: linear-gradient(180deg, var(--c-orange), rgba(20, 224, 177, .55) 60%, transparent);
  }

  .page-faq .tut-step__panel {
    padding: 32px 34px 34px;
  }

  .page-faq .tut-faq__list .disclosure > summary {
    padding: 17px 20px;
  }

  .page-faq .tut-faq__list .disclosure__panel {
    padding: 0 20px 20px 48px;
  }
}

@media (min-width: 1120px) {
  .page-faq .tut-hero__grid {
    gap: 64px;
  }

  .page-faq .tut-help__panel {
    padding: 42px 46px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .tut-index__link,
  .page-faq .tut-faq__list .disclosure {
    transition: none;
  }
}
<<<END>>>