:root {
  --bg: #0b0d10;
  --bg-elevated: #12151a;
  --bg-card: #161a21;
  --bg-card-hover: #1a1f28;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #f3f4f6;
  --text-muted: #9aa3b2;
  --text-dim: #6b7280;
  --accent: #f97316;
  --accent-soft: rgba(249, 115, 22, 0.14);
  --accent-glow: rgba(249, 115, 22, 0.35);
  --cassette: #a78bfa;
  --cassette-soft: rgba(167, 139, 250, 0.12);
  --cd: #38bdf8;
  --cd-soft: rgba(56, 189, 248, 0.12);
  --success: #4ade80;
  --sidebar-width: 260px;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(249, 115, 22, 0.12), transparent 55%),
    radial-gradient(ellipse 50% 40% at 100% 0%, rgba(56, 189, 248, 0.06), transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  border-right: 1px solid var(--border);
  background: rgba(11, 13, 16, 0.85);
  backdrop-filter: blur(16px);
}

.sidebar-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 1.5rem 1.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.brand-icon {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 1rem;
}

.brand strong {
  display: block;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

.brand span {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.toc {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  flex: 1;
}

.toc a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  transition: background 0.15s, color 0.15s;
}

.toc a:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
}

.sidebar-footer {
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.sidebar-footer .muted {
  color: var(--text-dim);
  margin-top: 0.25rem;
}

.content {
  max-width: 920px;
  padding: 3rem 3rem 4rem;
}

.hero {
  margin-bottom: 4rem;
}

.hero-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(249, 115, 22, 0.25);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1.25rem;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  max-width: 18ch;
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 62ch;
  margin-bottom: 2rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
}

.stat-value {
  display: block;
  font-size: 1.35rem;
  font-weight: 700;
  font-family: "JetBrains Mono", monospace;
  color: var(--text);
}

.stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.section {
  margin-bottom: 4.5rem;
}

.section-header {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  margin-bottom: 2rem;
}

.section-number {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8rem;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(249, 115, 22, 0.2);
  padding: 0.35rem 0.55rem;
  border-radius: 8px;
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.section-header h2 {
  font-size: 1.6rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.35rem;
}

.section-header p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-left: 2px solid var(--border);
  margin-left: 1rem;
  padding-left: 2rem;
}

.timeline-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  padding-bottom: 2rem;
  position: relative;
}

.timeline-step:last-child {
  padding-bottom: 0;
}

.step-marker {
  position: absolute;
  left: calc(-2rem - 13px);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  display: grid;
  place-items: center;
  font-family: "JetBrains Mono", monospace;
}

.step-body h3 {
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
}

.step-gear {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.step-body > p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 0.85rem;
}

.step-checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.step-checklist li {
  font-size: 0.875rem;
  color: var(--text-muted);
  padding-left: 1.1rem;
  position: relative;
}

.step-checklist li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.format-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}

.format-card {
  border-radius: var(--radius-sm);
  padding: 1rem 1.1rem;
  border: 1px solid var(--border);
}

.format-card.cassette {
  background: var(--cassette-soft);
  border-color: rgba(167, 139, 250, 0.25);
}

.format-card.cd {
  background: var(--cd-soft);
  border-color: rgba(56, 189, 248, 0.25);
}

.format-card h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.35rem;
}

.format-card.cassette h4 { color: var(--cassette); }
.format-card.cd h4 { color: var(--cd); }

.format-card p {
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
}

.format-card span {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: "JetBrains Mono", monospace;
}

.gear-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.gear-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: border-color 0.15s, background 0.15s;
}

.gear-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-strong);
}

.gear-card.priority-high {
  border-color: rgba(249, 115, 22, 0.25);
  box-shadow: inset 0 1px 0 rgba(249, 115, 22, 0.08);
}

.gear-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.85rem;
}

.priority {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
}

.cost {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.gear-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.2rem;
}

.gear-role {
  font-size: 0.8rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.65rem;
}

.gear-card > p:not(.gear-role) {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.gear-meta {
  display: grid;
  gap: 0.45rem;
  border-top: 1px solid var(--border);
  padding-top: 0.85rem;
}

.gear-meta div {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 0.5rem;
  font-size: 0.82rem;
}

.gear-meta dt {
  color: var(--text-dim);
  font-weight: 500;
}

.gear-meta dd {
  color: var(--text-muted);
}

.callout {
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  font-size: 0.92rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.callout strong {
  color: var(--text);
}

.callout.market-hot {
  background: var(--cassette-soft);
  border-color: rgba(167, 139, 250, 0.2);
}

.callout.market-steady {
  background: var(--cd-soft);
  border-color: rgba(56, 189, 248, 0.2);
}

.budget-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.budget-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem;
}

.budget-card.featured {
  border-color: rgba(249, 115, 22, 0.35);
  background: linear-gradient(180deg, rgba(249, 115, 22, 0.08), var(--bg-card));
  box-shadow: 0 0 0 1px rgba(249, 115, 22, 0.08), var(--shadow);
}

.budget-card h3 {
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

.budget-amount {
  font-family: "JetBrains Mono", monospace;
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.budget-card > p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.budget-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.budget-card li {
  font-size: 0.82rem;
  color: var(--text-muted);
  padding-left: 0.9rem;
  position: relative;
}

.budget-card li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.pricing-panel {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem;
}

.pricing-panel h3 {
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.pricing-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.pricing-row > div {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.pricing-row span {
  font-size: 0.78rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.pricing-row strong {
  font-family: "JetBrains Mono", monospace;
  font-size: 1rem;
}

.pricing-row em {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: normal;
}

.checklist-grid,
.reality-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.check-card,
.reality-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.check-card h3,
.reality-card h3 {
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.check-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.check-card li {
  font-size: 0.86rem;
  color: var(--text-muted);
  padding-left: 1rem;
  position: relative;
}

.check-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--success);
  font-size: 0.75rem;
}

.reality-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.intake-panel {
  margin-top: 1.25rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem;
}

.intake-panel h3 {
  font-size: 0.95rem;
  margin-bottom: 0.85rem;
}

.intake-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
}

.intake-tags span {
  font-size: 0.78rem;
  font-family: "JetBrains Mono", monospace;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
}

.intake-panel > p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.site-footer {
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-dim);
}

@media (max-width: 1100px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: relative;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .sidebar-inner {
    padding: 1rem 1.25rem;
  }

  .toc {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.35rem;
  }

  .sidebar-footer {
    display: none;
  }

  .content {
    padding: 2rem 1.25rem 3rem;
  }

  .hero-stats,
  .budget-grid,
  .pricing-row {
    grid-template-columns: 1fr;
  }

  .gear-grid,
  .checklist-grid,
  .reality-grid,
  .format-split {
    grid-template-columns: 1fr;
  }
}