:root {
  --bg: #07111d;
  --bg-soft: #0d1e33;
  --card: rgba(12, 30, 50, 0.92);
  --card-strong: rgba(16, 41, 71, 0.96);
  --border: rgba(142, 212, 255, 0.2);
  --text: #eef6ff;
  --muted: #9bc1de;
  --accent: #5ab3ff;
  --accent-soft: #8ed4ff;
  --gold: #f4c653;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top, rgba(33, 112, 186, 0.34), transparent 42%),
    linear-gradient(180deg, #08121f 0%, #0b1930 42%, #07111d 100%);
  color: var(--text);
  font-family: "Inter", Arial, sans-serif;
}

body {
  padding: 24px 18px 48px;
}

.tutorial-shell {
  width: min(960px, 100%);
  margin: 0 auto;
}

.tutorial-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}

.tutorial-back {
  color: var(--accent-soft);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
}

.tutorial-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.tutorial-button {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  background: linear-gradient(135deg, #78d2ff, #43aceb);
  color: #07213b;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 800;
  text-decoration: none;
  box-shadow: 0 16px 34px rgba(67, 172, 235, 0.24);
}

.tutorial-button.secondary {
  background: rgba(142, 212, 255, 0.08);
  color: var(--accent-soft);
  border: 1px solid rgba(142, 212, 255, 0.3);
  box-shadow: none;
}

.tutorial-hero,
.tutorial-section,
.tutorial-note {
  border: 1px solid var(--border);
  border-radius: 28px;
  background: var(--card);
  backdrop-filter: blur(10px);
}

.tutorial-hero {
  padding: 30px;
  margin-bottom: 20px;
}

.tutorial-eyebrow {
  margin: 0 0 8px;
  color: var(--gold);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.tutorial-hero h1 {
  margin: 0 0 12px;
  font-family: "Barlow Condensed", Impact, sans-serif;
  font-size: clamp(2.3rem, 6vw, 3.7rem);
  line-height: 0.96;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.tutorial-hero p {
  margin: 0;
  max-width: 64ch;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.7;
}

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

.tutorial-section {
  padding: 24px;
}

.tutorial-section h2 {
  margin: 0 0 14px;
  color: var(--accent-soft);
  font-family: "Barlow Condensed", Impact, sans-serif;
  font-size: 1.8rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.tutorial-section p {
  margin: 0 0 14px;
  color: var(--muted);
  line-height: 1.72;
}

.tutorial-steps,
.tutorial-tips {
  margin: 0;
  padding-left: 22px;
  color: var(--text);
}

.tutorial-steps li,
.tutorial-tips li {
  line-height: 1.72;
}

.tutorial-steps li + li,
.tutorial-tips li + li {
  margin-top: 10px;
}

.tutorial-note {
  margin-top: 18px;
  padding: 18px 22px;
  background: var(--card-strong);
}

.tutorial-note h3 {
  margin: 0 0 8px;
  color: var(--accent-soft);
  font-size: 1rem;
}

.tutorial-note p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.tutorial-footer {
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.92rem;
  text-align: center;
}

@media (max-width: 720px) {
  body {
    padding: 16px 12px 32px;
  }

  .tutorial-topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .tutorial-actions {
    width: 100%;
  }

  .tutorial-button,
  .tutorial-button.secondary {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .tutorial-hero,
  .tutorial-section {
    padding: 20px 18px;
  }
}

@media print {
  body {
    padding: 0;
    background: #ffffff;
    color: #111111;
  }

  .tutorial-topbar {
    display: none;
  }

  .tutorial-shell {
    width: 100%;
    margin: 0;
  }

  .tutorial-hero,
  .tutorial-section,
  .tutorial-note {
    background: #ffffff;
    border: 1px solid #cfd8e3;
    box-shadow: none;
    backdrop-filter: none;
    break-inside: avoid;
  }

  .tutorial-hero h1,
  .tutorial-section h2,
  .tutorial-note h3 {
    color: #133d68;
  }

  .tutorial-hero p,
  .tutorial-section p,
  .tutorial-steps,
  .tutorial-tips,
  .tutorial-note p,
  .tutorial-footer {
    color: #1f2a35;
  }
}