:root {
  --bg: #14171c;
  --bg-card: #1c2027;
  --bg-alt: #191d23;
  --ink: #e7e9ec;
  --ink-soft: #9aa3ad;
  --accent: #e8935a;
  --accent-bright: #ffb37a;
  --border: #2c323b;

  --info-bg: #142523;
  --info-border: #4f8f81;
  --tip-bg: #1e2312;
  --tip-border: #7c9a3e;
  --warn-bg: #2b2013;
  --warn-border: #c9873f;
  --danger-bg: #2b1618;
  --danger-border: #d1584a;

  --code-bg: #0c0f13;
  --code-ink: #b7f2c2;
}

* { box-sizing: border-box; }

html { font-size: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Arial, sans-serif;
  line-height: 1.6;
  font-size: 1.0625rem;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

/* Toolbar */
.toolbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}
.toolbar-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 0.6rem 1.5rem;
  display: flex;
  justify-content: flex-end;
}
.toolbar button {
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--ink);
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  cursor: pointer;
}
.toolbar button:hover { background: #232933; }
.toolbar button:active { transform: translateY(1px); }

/* Hero */
.hero {
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--border);
  margin-bottom: 2.5rem;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-bright);
  font-weight: 600;
  font-size: 0.8rem;
  margin: 0 0 0.5rem;
}
.hero h1 {
  font-size: 2.1rem;
  margin: 0 0 1rem;
  color: var(--accent-bright);
}
.lead {
  font-size: 1.1rem;
  margin: 0 0 1.25rem;
}

.requirements {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.requirements li {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.9rem;
}

/* Callouts */
.callout {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.9rem 1.1rem;
  border-radius: 10px;
  border: 1px solid;
  margin: 1rem 0;
}
.callout p { margin: 0; }
.callout-icon { font-size: 1.3rem; line-height: 1; flex-shrink: 0; }

.callout-info { background: var(--info-bg); border-color: var(--info-border); }
.callout-tip { background: var(--tip-bg); border-color: var(--tip-border); }
.callout-warn { background: var(--warn-bg); border-color: var(--warn-border); }
.callout-danger {
  background: var(--danger-bg);
  border-color: var(--danger-border);
  font-size: 1.05rem;
}

/* Steps */
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
}

.step {
  display: flex;
  gap: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.step-critical {
  border: 2px solid var(--danger-border);
}

.step-number {
  flex-shrink: 0;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  background: var(--accent);
  color: #14171c;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 700;
}
.step-critical .step-number {
  background: var(--danger-border);
  color: #14171c;
}

.step-body { flex: 1; min-width: 0; }
.step-body h2 {
  margin: 0 0 0.75rem;
  font-size: 1.35rem;
  color: var(--accent-bright);
}

.substeps {
  margin: 0 0 0.5rem;
  padding-left: 1.4rem;
}
.substeps li {
  margin-bottom: 0.6rem;
}
.substeps li:last-child { margin-bottom: 0; }

.type-this {
  display: inline-block;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.1rem 0.5rem;
  font-family: "Consolas", "SF Mono", monospace;
  font-weight: 600;
  color: var(--accent-bright);
}

.pill {
  display: inline-block;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.1rem 0.65rem;
  font-weight: 700;
  color: var(--accent-bright);
}

/* Command box */
.command-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.9rem 1rem;
  margin: 1rem 0;
}
.command-box code {
  font-family: "Consolas", "SF Mono", monospace;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--code-ink);
  overflow-x: auto;
  white-space: nowrap;
}
.copy-btn {
  flex-shrink: 0;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent-bright);
  padding: 0.5rem 0.9rem;
  border-radius: 8px;
  cursor: pointer;
}
.copy-btn:hover { background: rgba(232, 147, 90, 0.12); }
.copy-btn:active { transform: translateY(1px); }
.copy-btn.copied {
  border-color: var(--tip-border);
  color: #c9e26b;
}

/* Method section headers */
.method-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 2.5rem 0 1.5rem;
}
.method-icon { font-size: 2rem; }
.method-header h2 {
  margin: 0;
  font-size: 1.5rem;
  color: var(--accent-bright);
}
.method-sub {
  margin: 0.15rem 0 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.alt-method {
  background: var(--bg-alt);
  border: 1px dashed var(--border);
  border-radius: 14px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
.alt-method h3 {
  color: var(--accent-bright);
  font-size: 1.1rem;
  margin: 1.25rem 0 0.75rem;
}
.alt-method h3:first-child { margin-top: 0; }
.alt-method > p { margin-top: 0; }

/* Print */
@media print {
  body { background: #fff; color: #000; }
  .toolbar, .no-print { display: none !important; }
  .step, .alt-method {
    box-shadow: none;
    border: 1px solid #999;
    break-inside: avoid;
    background: #fff;
  }
  .step-body h2, .hero h1, .eyebrow, .method-header h2 { color: #000; }
  .callout { break-inside: avoid; }
  .command-box { background: #f0f0f0; border: 1px solid #999; }
  .command-box code { color: #000; }
  .copy-btn { display: none; }
}

/* Small screens */
@media (max-width: 520px) {
  .step { flex-direction: column; padding: 1.25rem; }
  .hero h1 { font-size: 1.7rem; }
  .command-box { flex-direction: column; align-items: stretch; }
  .command-box code { white-space: normal; word-break: break-all; }
}