body {
  margin: 0;
  background: #1b1f20;
  color: #edf2f2;
  font-family: "Inter", "SF Pro Text", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

a {
  color: #65beb7;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.tutorial-page {
  max-width: 980px;
  margin: 0 auto;
  padding: 54px 28px 80px;
}

.tutorial-back {
  display: inline-flex;
  margin-bottom: 36px;
  color: #b8c0c8;
  font-size: 14px;
}

.tutorial-kicker {
  margin: 0 0 14px;
  color: #65beb7;
  font-size: 14px;
  font-weight: 720;
}

.tutorial-title {
  margin: 0;
  max-width: 760px;
  font-size: 46px;
  font-weight: 820;
  line-height: 1.18;
  letter-spacing: 0;
}

.tutorial-lead {
  max-width: 760px;
  margin: 22px 0 0;
  color: #b8c0c8;
  font-size: 18px;
  line-height: 1.8;
}

.tutorial-grid {
  margin-top: 40px;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 34px;
  align-items: start;
}

.tutorial-side {
  position: sticky;
  top: 24px;
  padding-top: 18px;
  border-top: 1px solid rgba(122, 134, 145, 0.28);
}

.tutorial-side p {
  margin: 0 0 14px;
  color: #d7a84c;
  font-size: 13px;
  font-weight: 720;
}

.tutorial-side ol {
  margin: 0;
  padding-left: 20px;
  color: #b8c0c8;
  line-height: 1.8;
}

.tutorial-content {
  display: grid;
  gap: 18px;
}

.tutorial-section {
  padding: 24px;
  border: 1px solid rgba(122, 134, 145, 0.24);
  border-radius: 8px;
  background: #151819;
}

.tutorial-section h2 {
  margin: 0 0 14px;
  font-size: 22px;
  line-height: 1.35;
}

.tutorial-section p {
  margin: 0 0 12px;
  color: #cbd2d8;
  line-height: 1.75;
}

.tutorial-section ul,
.tutorial-section ol {
  margin: 0;
  padding-left: 22px;
  color: #cbd2d8;
  line-height: 1.8;
}

.tutorial-section li + li {
  margin-top: 8px;
}

.tutorial-code {
  margin: 14px 0 0;
  padding: 16px;
  overflow-x: auto;
  border: 1px solid rgba(122, 134, 145, 0.24);
  border-radius: 8px;
  background: #101416;
  color: #edf2f2;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  line-height: 1.65;
}

.tutorial-note {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(122, 134, 145, 0.18);
  color: #b8c0c8;
  font-size: 14px;
}

@media (max-width: 760px) {
  .tutorial-page {
    padding: 38px 20px 64px;
  }

  .tutorial-title {
    font-size: 34px;
  }

  .tutorial-grid {
    grid-template-columns: 1fr;
  }

  .tutorial-side {
    position: static;
  }
}