.tutorial-hero {
  position: relative;
  padding-top: clamp(70px, 9vw, 118px);
  padding-bottom: clamp(54px, 7vw, 88px);
  overflow-x: clip;
  border-bottom: 1px solid var(--color-line);
  background:
    radial-gradient(ellipse at top left, var(--color-blue-glow-soft), transparent 58%),
    var(--color-canvas);
}

.tutorial-hero::after {
  content: "";
  position: absolute;
  right: max(var(--gutter), calc((100vw - var(--content-width)) / 2));
  bottom: 36px;
  width: 180px;
  height: 108px;
  border: 1px solid var(--color-brand-line);
  border-radius: var(--radius-xlarge);
  pointer-events: none;
  transform: rotate(-4deg);
}

.tutorial-hero .reading-wrap {
  position: relative;
  z-index: 1;
}

.tutorial-hero h1 {
  max-width: 760px;
  font-size: clamp(34px, 4.2vw, 48px);
}

.tutorial-intro {
  max-width: 760px;
  margin-top: 22px;
  color: var(--color-ink-muted);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.8;
}

.tutorial-actions {
  margin-top: 30px;
}

.tutorial-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
}

.tutorial-facts span {
  display: inline-flex;
  max-width: 100%;
  min-height: 36px;
  align-items: center;
  gap: 7px;
  padding: 6px 13px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  color: var(--color-ink-muted);
  font-size: 12px;
}

.tutorial-facts strong {
  color: var(--color-brand-deep);
}

.tutorial-nav-section {
  position: relative;
  z-index: 3;
  padding-top: 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-canvas);
}

.tutorial-nav-section .toc {
  box-shadow: var(--shadow-soft);
}

#before-start,
#import-subscription,
#choose-mode,
#connect,
#verify,
#troubleshooting {
  scroll-margin-top: calc(var(--header-height) + 18px);
}

.tutorial-prose {
  color: var(--color-ink);
}

.tutorial-prose > p {
  color: var(--color-ink-muted);
}

.tutorial-prose > p strong {
  color: var(--color-ink);
}

.tutorial-prose h3 {
  margin-top: 38px;
  margin-bottom: 14px;
  font-size: clamp(20px, 2.1vw, 25px);
}

.tutorial-prose .callout {
  margin-top: 30px;
  margin-bottom: 30px;
}

.prep-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 38px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-large);
  background: var(--color-panel);
}

.prep-strip > div {
  min-width: 0;
  padding: 22px;
  border-right: 1px solid var(--color-line);
}

.prep-strip > div:last-child {
  border-right: 0;
}

.prep-strip strong {
  display: block;
  margin-top: 8px;
  font-size: 16px;
}

.prep-strip p {
  margin: 6px 0 0;
  color: var(--color-ink-muted);
  font-size: 13px;
}

.prep-label {
  color: var(--color-brand-deep);
  font: 750 11px/1.4 var(--font-mono);
  letter-spacing: .08em;
}

.tutorial-step-section {
  border-top: 1px solid var(--color-line);
}

.tutorial-step-section:nth-of-type(even) {
  background: var(--color-panel);
}

.step-heading {
  display: flex;
  align-items: flex-start;
  gap: 22px;
  margin-bottom: 38px;
}

.step-heading .eyebrow {
  margin-bottom: 7px;
}

.step-number {
  display: grid;
  width: 58px;
  height: 58px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--color-brand-line);
  border-radius: var(--radius-large);
  background: var(--color-brand-soft);
  color: var(--color-brand-deep);
  font: 800 16px/1 var(--font-mono);
}

.interface-note {
  margin-top: 34px;
  margin-bottom: 34px;
  padding: 18px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-large);
  background: var(--color-canvas);
  box-shadow: var(--shadow-soft);
}

.interface-note-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 0 4px 15px;
  border-bottom: 1px solid var(--color-line);
}

.interface-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 8px;
  padding: 12px 14px;
  border-radius: var(--radius-medium);
  color: var(--color-ink-muted);
  font-size: 13px;
}

.interface-row.is-selected {
  background: var(--color-brand-soft);
  color: var(--color-brand-deep);
  font-weight: 750;
}

.mode-compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
  margin-bottom: 34px;
}

.mode-compare article {
  min-width: 0;
  padding: 25px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-large);
  background: var(--color-canvas);
}

.mode-compare article:first-child {
  border-color: var(--color-brand-line);
  box-shadow: var(--shadow-soft);
}

.mode-compare h3 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 21px;
}

.mode-compare p {
  margin-bottom: 17px;
  color: var(--color-ink-muted);
  font-size: 14px;
}

.mode-choice {
  display: inline-flex;
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  background: var(--color-brand);
  color: var(--color-white-text);
  font-size: 11px;
  font-weight: 800;
}

.connection-panel {
  margin-top: 34px;
  margin-bottom: 34px;
  overflow: hidden;
  border: 1px solid var(--color-brand-line);
  border-radius: var(--radius-large);
  background: var(--color-canvas);
  box-shadow: var(--shadow-soft);
}

.connection-main {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 22px;
  border-bottom: 1px solid var(--color-line);
}

.connection-main .status-dot {
  width: 11px;
  height: 11px;
  box-shadow: 0 0 0 5px var(--color-positive-soft);
}

.connection-main p {
  margin: 3px 0 0;
  color: var(--color-ink-muted);
  font-size: 13px;
}

.connection-settings {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  background: var(--color-panel);
}

.connection-settings > div {
  display: grid;
  gap: 4px;
  padding: 17px 20px;
  border-right: 1px solid var(--color-line);
}

.connection-settings > div:last-child {
  border-right: 0;
}

.connection-settings span {
  color: var(--color-ink-muted);
  font-size: 11px;
}

.connection-settings strong {
  font-size: 13px;
}

.positive-text {
  color: var(--color-positive);
}

.verify-list {
  display: grid;
  gap: 12px;
  margin-top: 34px;
  margin-bottom: 34px;
}

.verify-list > div {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 18px 20px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  background: var(--color-canvas);
}

.verify-index {
  display: grid;
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: var(--radius-small);
  background: var(--color-brand-soft);
  color: var(--color-brand-deep);
  font: 800 13px/1 var(--font-mono);
}

.verify-list p {
  margin: 4px 0 0;
  color: var(--color-ink-muted);
  font-size: 13px;
}

.check-path {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 38px;
}

.check-path article {
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-large);
  background: var(--color-canvas);
}

.check-path-number {
  display: inline-grid;
  width: 30px;
  height: 30px;
  margin-bottom: 14px;
  place-items: center;
  border-radius: 50%;
  background: var(--color-brand);
  color: var(--color-white-text);
  font: 800 12px/1 var(--font-mono);
}

.check-path h3 {
  margin-bottom: 8px;
  font-size: 19px;
}

.check-path p {
  margin: 0;
  color: var(--color-ink-muted);
  font-size: 14px;
}

.next-reading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin-top: 52px;
  padding: clamp(25px, 4vw, 38px);
  border: 1px solid var(--color-brand-line);
  border-radius: var(--radius-xlarge);
  background: var(--color-panel);
}

.next-reading > div:first-child {
  max-width: 520px;
}

.next-reading h2 {
  font-size: clamp(24px, 3vw, 32px);
}

.next-reading p {
  margin: 12px 0 0;
  color: var(--color-ink-muted);
}

.next-reading .button-row {
  flex: 0 0 auto;
}

@media (max-width: 768px) {
  .tutorial-hero {
    padding-top: 64px;
    padding-bottom: 58px;
  }

  .tutorial-hero h1 {
    font-size: clamp(24px, 7.6vw, 30px);
  }

  .tutorial-hero::after {
    display: none;
  }

  .tutorial-intro {
    font-size: 16px;
  }

  .prep-strip,
  .connection-settings {
    grid-template-columns: 1fr;
  }

  .prep-strip > div,
  .connection-settings > div {
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .prep-strip > div:last-child,
  .connection-settings > div:last-child {
    border-bottom: 0;
  }

  .mode-compare,
  .check-path {
    grid-template-columns: 1fr;
  }

  .next-reading {
    align-items: flex-start;
    flex-direction: column;
  }

  .next-reading .button-row {
    width: 100%;
  }
}

@media (max-width: 520px) {
  .tutorial-facts {
    align-items: stretch;
    flex-direction: column;
  }

  .tutorial-facts span {
    width: 100%;
  }

  .step-heading {
    gap: 14px;
  }

  .step-number {
    width: 46px;
    height: 46px;
    border-radius: var(--radius-medium);
    font-size: 14px;
  }

  .interface-note-head,
  .interface-row {
    align-items: flex-start;
  }

  .interface-row {
    flex-direction: column;
    gap: 3px;
  }

  .connection-main {
    align-items: flex-start;
  }
}