.tutorial-hero {
  position: relative;
  min-height: 650px;
  padding-top: clamp(70px, 9vw, 118px);
  padding-bottom: clamp(70px, 9vw, 118px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(390px, 0.75fr);
  align-items: center;
  gap: clamp(40px, 7vw, 96px);
  overflow: hidden;
}

.tutorial-hero::before {
  position: absolute;
  top: 12%;
  right: var(--gutter);
  z-index: -2;
  width: min(58vw, 760px);
  height: 76%;
  content: "";
  border: var(--line-thin) solid var(--color-metal-alpha);
  background:
    linear-gradient(90deg, var(--color-grid-strong) var(--line-thin), var(--color-transparent) var(--line-thin)),
    linear-gradient(0deg, var(--color-grid-strong) var(--line-thin), var(--color-transparent) var(--line-thin));
  background-size: 42px 42px;
  clip-path: polygon(8% 0, 100% 0, 100% 88%, 92% 100%, 0 100%, 0 12%);
}

.tutorial-hero::after {
  position: absolute;
  right: 6%;
  bottom: 13%;
  z-index: -1;
  width: 42%;
  height: 5px;
  content: "";
  transform: skewX(-38deg);
  background: var(--color-accent);
  box-shadow: var(--shadow-accent);
}

.tutorial-hero-copy,
.setup-sequence {
  min-width: 0;
}

.tutorial-hero h1 {
  max-width: 780px;
  margin-bottom: 25px;
}

.tutorial-lead {
  max-width: 700px;
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: 1.02rem;
}

.tutorial-actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
}

.setup-sequence {
  position: relative;
  border: var(--line-medium) solid var(--color-border);
  background:
    linear-gradient(145deg, var(--color-silver-alpha), var(--color-transparent) 38%),
    var(--color-panel);
  box-shadow: var(--shadow-device);
  clip-path: polygon(22px 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%, 0 22px);
}

.setup-sequence::before {
  position: absolute;
  top: 0;
  left: 22px;
  width: 38%;
  height: 4px;
  content: "";
  background: var(--color-accent);
}

.setup-sequence-head {
  min-height: 58px;
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border-bottom: var(--line-thin) solid var(--color-border);
  color: var(--color-text-muted);
  background: var(--color-panel-2);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}

.setup-sequence-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.setup-sequence-list li {
  min-width: 0;
  min-height: 92px;
  padding: 18px 20px;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  align-items: center;
  gap: 18px;
  border-bottom: var(--line-thin) solid var(--color-metal-alpha);
}

.setup-sequence-list li:last-child {
  border-bottom: 0;
}

.setup-sequence-list li:nth-child(even) {
  background: var(--color-black-alpha);
}

.sequence-index {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  border: var(--line-thin) solid var(--color-accent-dark);
  color: var(--color-accent);
  background: var(--color-bg);
  font-family: var(--font-mono);
  font-weight: 800;
}

.setup-sequence-list strong,
.setup-sequence-list small {
  display: block;
}

.setup-sequence-list strong {
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

.setup-sequence-list small {
  overflow-wrap: anywhere;
}

.tutorial-intro,
.tutorial-navigation,
.completion-section {
  padding-top: clamp(64px, 8vw, 104px);
  padding-bottom: clamp(64px, 8vw, 104px);
}

.tutorial-intro {
  border-top: var(--line-thin) solid var(--color-border);
}

.tutorial-intro > h2,
.tutorial-intro > p {
  max-width: 900px;
}

.platform-route-grid {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: var(--line-thin) solid var(--color-border);
  border-left: var(--line-thin) solid var(--color-border);
}

.platform-route-grid a {
  min-width: 0;
  min-height: 108px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
  border-right: var(--line-thin) solid var(--color-border);
  border-bottom: var(--line-thin) solid var(--color-border);
  background: var(--color-panel);
  transition:
    color var(--transition-fast) var(--ease-mechanical),
    background var(--transition-fast) var(--ease-mechanical);
}

.platform-route-grid a:hover {
  color: var(--color-bg);
  background: var(--color-accent);
}

.platform-route-grid span {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.67rem;
  letter-spacing: 0.1em;
}

.platform-route-grid a:hover span {
  color: var(--color-bg);
}

.platform-route-grid strong {
  font-size: 0.84rem;
  overflow-wrap: anywhere;
}

.tutorial-navigation {
  padding-bottom: 20px;
}

.tutorial-navigation h2 {
  margin-bottom: 30px;
}

.tutorial-flow {
  position: relative;
  padding-top: 24px;
  padding-bottom: 80px;
}

.tutorial-flow::before {
  position: absolute;
  top: 24px;
  bottom: 80px;
  left: calc(var(--gutter) + 56px);
  width: 3px;
  content: "";
  background: linear-gradient(180deg, var(--color-accent), var(--color-border) 22%, var(--color-border) 82%, var(--color-accent));
}

.tutorial-step {
  position: relative;
  min-width: 0;
  padding-top: 58px;
  padding-bottom: 58px;
  display: grid;
  grid-template-columns: 112px minmax(0, 920px);
  gap: clamp(28px, 5vw, 72px);
  border-top: var(--line-thin) solid var(--color-border);
}

.tutorial-step:first-child {
  border-top: 0;
}

.tutorial-step-rail {
  position: relative;
  z-index: 2;
  width: 112px;
  height: 112px;
  display: grid;
  align-content: center;
  justify-items: center;
  border: var(--line-medium) solid var(--color-border);
  color: var(--color-accent);
  background: var(--color-panel-2);
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
}

.tutorial-step-rail span {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 900;
  line-height: 1;
}

.tutorial-step-rail small {
  margin-top: 8px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
}

.tutorial-step-body {
  min-width: 0;
  color: var(--color-text-muted);
}

.tutorial-step-body h2,
.tutorial-step-body h3 {
  color: var(--color-text);
}

.tutorial-step-body h2 {
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: var(--line-thin) solid var(--color-border);
}

.tutorial-step-body h3 {
  margin-top: 38px;
  margin-bottom: 13px;
}

.tutorial-step-body p {
  max-width: 860px;
}

.tutorial-step-body a,
.tutorial-text-link {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 0.22em;
}

.completion-section {
  border-top: var(--line-medium) solid var(--color-border);
}

.completion-panel {
  padding: clamp(24px, 5vw, 46px);
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(380px, 1.15fr);
  gap: clamp(34px, 7vw, 90px);
  border: var(--line-medium) solid var(--color-accent-dark);
  background:
    linear-gradient(115deg, var(--color-accent-soft), var(--color-transparent) 54%),
    var(--color-panel);
  clip-path: polygon(18px 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%, 0 18px);
}

.completion-panel > * {
  min-width: 0;
}

.completion-panel h2 {
  margin-bottom: 16px;
}

.completion-panel p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.completion-list {
  margin: 0;
  padding: 0;
  display: grid;
  list-style: none;
  border-top: var(--line-thin) solid var(--color-border);
}

.completion-list li {
  min-width: 0;
  padding: 15px 0;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 13px;
  border-bottom: var(--line-thin) solid var(--color-border);
  color: var(--color-text-muted);
}

.completion-list span {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
}

.next-route-grid {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.next-route-grid .card {
  min-height: 230px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.next-route-grid .tutorial-text-link {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
}

@media (max-width: 980px) {
  .tutorial-hero {
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .tutorial-hero::before {
    right: -10%;
    width: 78%;
    opacity: 0.55;
  }

  .setup-sequence {
    width: min(100%, 680px);
  }

  .platform-route-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .completion-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .tutorial-hero {
    padding-top: 54px;
    padding-bottom: 64px;
    gap: 38px;
  }

  .tutorial-hero::before {
    top: 36%;
    right: -32%;
    width: 118%;
    height: 58%;
  }

  .tutorial-actions {
    flex-direction: column;
  }

  .tutorial-actions .btn {
    width: 100%;
  }

  .platform-route-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tutorial-flow::before {
    left: calc(var(--gutter) + 24px);
  }

  .tutorial-step {
    padding-top: 48px;
    padding-bottom: 48px;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .tutorial-step-rail {
    width: 76px;
    height: 76px;
  }

  .tutorial-step-rail span {
    font-size: 1.9rem;
  }

  .tutorial-step-rail small {
    display: none;
  }

  .completion-panel {
    padding: 22px;
  }

  .next-route-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 420px) {
  .setup-sequence-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .setup-sequence-list li {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 13px;
  }

  .sequence-index {
    width: 40px;
    height: 40px;
  }

  .platform-route-grid {
    grid-template-columns: 1fr;
  }

  .platform-route-grid a {
    min-height: 90px;
  }

  .completion-list li {
    grid-template-columns: 30px minmax(0, 1fr);
  }
}