:root {
  --bg-0: #050810;
  --bg-1: #0a0e1a;
  --bg-2: #111827;
  --bg-3: #1a2133;
  --border: #1f2d45;
  --border-light: #2a3a55;
  --text-0: #f8fafc;
  --text-1: #e2e8f0;
  --text-2: #94a3b8;
  --text-3: #64748b;
  --orange: #f97316;
  --orange-light: #fb923c;
  --orange-dim: rgba(249,115,22,0.12);
  --purple: #8b5cf6;
  --purple-light: #a78bfa;
  --purple-dim: rgba(139,92,246,0.12);
  --blue: #3b82f6;
  --blue-light: #60a5fa;
  --blue-dim: rgba(59,130,246,0.12);
  --green: #22c55e;
  --red: #ef4444;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --glow-orange: 0 0 24px rgba(249,115,22,0.35);
  --glow-purple: 0 0 24px rgba(139,92,246,0.4);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg-1);
  color: var(--text-1);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', Roboto, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; color: var(--text-0); }
h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.125rem); }
h3 { font-size: clamp(1rem, 2vw, 1.25rem); }

p { color: var(--text-2); }
strong { color: var(--text-0); font-weight: 600; }

a { color: var(--orange-light); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--text-0); }

code, pre {
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'SF Mono', 'Consolas', monospace;
  font-size: 0.875em;
}

/* ── Layout ──────────────────────────────────────────────── */

.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }

.section { padding: 5rem 0; }
.section--alt { background: var(--bg-2); }

/* ── Navigation ──────────────────────────────────────────── */

nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,14,26,0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; max-width: 1100px; margin: 0 auto; padding: 0 1.5rem;
}

.nav-logo {
  display: flex; align-items: center; gap: 0.625rem;
  color: var(--text-0); font-weight: 700; font-size: 1.125rem; letter-spacing: -0.02em;
}
.nav-logo svg { width: 38px; height: 38px; }
.nav-logo .brand { color: var(--orange); }

.nav-links { display: flex; align-items: center; gap: 0.25rem; list-style: none; }
.nav-links a {
  color: var(--text-2); padding: 0.45rem 0.875rem;
  border-radius: var(--radius-sm); font-size: 0.875rem; font-weight: 500;
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: var(--text-0); background: var(--bg-3); }
.nav-links a.active { color: var(--orange-light); }
.nav-gh {
  background: var(--bg-3) !important; color: var(--text-1) !important;
  border: 1px solid var(--border-light) !important;
  display: inline-flex; align-items: center; gap: 0.375rem;
}
.nav-gh:hover { border-color: var(--text-2) !important; }

/* ── Buttons ─────────────────────────────────────────────── */

.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 1.5rem; border-radius: var(--radius-md);
  font-weight: 600; font-size: 0.9375rem; cursor: pointer;
  border: none; text-decoration: none; transition: all 0.2s; white-space: nowrap;
}
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { background: var(--orange-light); color: #fff; box-shadow: var(--glow-orange); transform: translateY(-1px); }
.btn-secondary { background: transparent; color: var(--text-1); border: 1px solid var(--border-light); }
.btn-secondary:hover { color: var(--text-0); border-color: var(--text-2); background: var(--bg-3); }
.btn-purple { background: var(--purple); color: #fff; }
.btn-purple:hover { background: var(--purple-light); color: #fff; box-shadow: var(--glow-purple); transform: translateY(-1px); }

/* ── Badge ───────────────────────────────────────────────── */

.badge {
  display: inline-flex; align-items: center; gap: 0.375rem;
  padding: 0.25rem 0.75rem; border-radius: 999px;
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
}
.badge-orange { background: var(--orange-dim); color: var(--orange-light); border: 1px solid rgba(249,115,22,0.3); }
.badge-purple { background: var(--purple-dim); color: var(--purple-light); border: 1px solid rgba(139,92,246,0.3); }
.badge-blue   { background: var(--blue-dim);   color: var(--blue-light);   border: 1px solid rgba(59,130,246,0.3); }

/* ── Cards ───────────────────────────────────────────────── */

.card {
  background: var(--bg-3); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.5rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.card:hover { border-color: var(--border-light); box-shadow: var(--shadow-md); }

.card-icon {
  width: 42px; height: 42px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1rem; font-size: 1.25rem;
}
.icon-orange { background: var(--orange-dim); }
.icon-purple { background: var(--purple-dim); }
.icon-blue   { background: var(--blue-dim);   }
.icon-green  { background: rgba(34,197,94,0.12); }

.card h3 { margin-bottom: 0.5rem; font-size: 1.0625rem; }
.card p  { font-size: 0.875rem; line-height: 1.75; }

/* ── Grids ───────────────────────────────────────────────── */

.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.25rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 1.5rem; }

@media (max-width: 900px) { .grid-3 { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 600px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

/* ── Hero ────────────────────────────────────────────────── */

.hero { padding: 6rem 0 5rem; position: relative; overflow: hidden; }
.hero::before {
  content: ''; position: absolute; top: -40%; left: -10%;
  width: 55%; height: 140%;
  background: radial-gradient(circle, rgba(249,115,22,0.07) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: ''; position: absolute; top: 0; right: -5%;
  width: 45%; height: 100%;
  background: radial-gradient(circle at 60% 50%, rgba(139,92,246,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.hero-text  { position: relative; z-index: 1; }

.hero-eyebrow { margin-bottom: 1rem; }
.hero-title   { margin-bottom: 1.25rem; }
.hero-title .hi-o { color: var(--orange); }
.hero-title .hi-p { color: var(--purple-light); }

.hero-desc { font-size: 1.0625rem; margin-bottom: 2rem; line-height: 1.75; }
.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }

.hero-visual { display: flex; justify-content: center; align-items: center; position: relative; z-index: 1; }
.hero-visual svg { width: 100%; max-width: 520px; filter: drop-shadow(0 8px 40px rgba(0,0,0,0.6)); }

@media (prefers-reduced-motion: no-preference) {
  .hero-visual svg { animation: float 7s ease-in-out infinite; }
}
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

@media (max-width: 768px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .hero-visual svg { max-width: 340px; }
}

/* ── Section header ──────────────────────────────────────── */

.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-header .badge { margin-bottom: 0.75rem; }
.section-header h2 { margin-bottom: 0.75rem; }
.section-header p { max-width: 600px; margin: 0 auto; font-size: 1rem; }

/* ── Comparison table ────────────────────────────────────── */

.comparison { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--border); }
.comparison table { width: 100%; border-collapse: collapse; background: var(--bg-3); }
.comparison th {
  padding: 1rem 1.25rem; text-align: left; font-size: 0.8125rem;
  font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em;
  border-bottom: 1px solid var(--border);
}
.comparison th:first-child { color: var(--text-3); }
.comparison th:nth-child(2) { color: var(--orange-light); background: rgba(249,115,22,0.05); }
.comparison th:nth-child(3) { color: var(--text-3); }

.comparison td {
  padding: 0.875rem 1.25rem; font-size: 0.875rem;
  border-bottom: 1px solid rgba(31,45,69,0.6);
  vertical-align: top; line-height: 1.6;
}
.comparison td:first-child  { color: var(--text-2); font-weight: 500; }
.comparison td:nth-child(2) { background: rgba(249,115,22,0.03); color: var(--text-1); }
.comparison td:nth-child(3) { color: var(--text-3); }
.comparison tr:last-child td { border-bottom: none; }

.yes { color: var(--green); font-weight: 600; }
.no  { color: var(--red);   font-weight: 600; }
.na  { color: var(--text-3); font-weight: 600; }
.comparison tr.cmp-group td {
  background: var(--bg-2); color: var(--text-2);
  font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em;
  padding: 0.625rem 1.25rem;
}

/* ── Code block ──────────────────────────────────────────── */

.code-block { background: var(--bg-0); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.code-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.7rem 1.25rem; background: var(--bg-2); border-bottom: 1px solid var(--border);
}
.code-dots { display: flex; gap: 0.375rem; }
.code-dots span { width: 12px; height: 12px; border-radius: 50%; }
.code-dots span:nth-child(1) { background: #ef4444; }
.code-dots span:nth-child(2) { background: #f59e0b; }
.code-dots span:nth-child(3) { background: #22c55e; }
.code-filename { color: var(--text-3); font-size: 0.8125rem; }

pre { padding: 1.5rem; overflow-x: auto; font-size: 0.8125rem; line-height: 1.7; tab-size: 4; }
pre code { background: none; padding: 0; }

.kw { color: #ff79c6; }
.fn { color: #50fa7b; }
.st { color: #f1fa8c; }
.cm { color: #6272a4; font-style: italic; }
.ty { color: #8be9fd; }
.op { color: #ffb86c; }
.nu { color: #bd93f9; }

/* ── Steps ───────────────────────────────────────────────── */

.steps { display: grid; grid-template-columns: repeat(3,1fr); gap: 2rem; counter-reset: step; }
@media (max-width: 768px) { .steps { grid-template-columns: 1fr; } }

.step { position: relative; text-align: center; padding: 0 1rem; }
.step-num {
  width: 50px; height: 50px; border-radius: 50%;
  background: rgba(249,115,22,0.12); border: 2px solid rgba(249,115,22,0.35);
  color: var(--orange-light); font-size: 1.25rem; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1.25rem;
}
.step-connector {
  display: none;
}
@media (min-width: 769px) {
  .step:not(:last-child) .step-connector {
    display: block; position: absolute; top: 25px;
    left: calc(50% + 32px); right: calc(-50% + 32px);
    height: 1px; background: linear-gradient(to right, var(--border-light), transparent);
  }
}
.step h3 { margin-bottom: 0.5rem; font-size: 1rem; }
.step p  { font-size: 0.875rem; line-height: 1.75; }

/* ── Feature list ────────────────────────────────────────── */

.feat-list { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.feat-list li { display: flex; align-items: flex-start; gap: 0.625rem; font-size: 0.9375rem; color: var(--text-2); }
.feat-list li::before { content: '→'; color: var(--orange); font-weight: 700; flex-shrink: 0; }

/* "What this example teaches" callout — more readable than muted body text */
.teaches { padding: 1.75rem !important; }
.teaches > p:first-child { padding-bottom: 0.75rem; border-bottom: 1px solid var(--border); }
.teaches .feat-list { gap: 0.875rem; }
.teaches .feat-list li { display: block; position: relative; padding-left: 1.5rem; font-size: 1rem; line-height: 1.65; color: var(--text-1); }
.teaches .feat-list li::before { position: absolute; left: 0; top: 0; }

.check-list { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.check-list li { display: flex; align-items: flex-start; gap: 0.625rem; font-size: 0.9375rem; color: var(--text-2); }
.check-list li::before { content: '✓'; color: var(--green); font-weight: 700; flex-shrink: 0; }

/* ── CTA banner ──────────────────────────────────────────── */

.cta-banner {
  background: linear-gradient(135deg, rgba(249,115,22,0.1), rgba(139,92,246,0.1));
  border: 1px solid rgba(249,115,22,0.2); border-radius: var(--radius-lg);
  padding: 4rem 2rem; text-align: center;
}
.cta-banner h2 { margin-bottom: 0.75rem; }
.cta-banner p  { margin-bottom: 2rem; font-size: 1rem; }
.cta-actions   { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ── Tags (det / ai) ─────────────────────────────────────── */

.tag {
  display: inline-block; padding: 0.15rem 0.55rem;
  border-radius: 4px; font-size: 0.75rem; font-weight: 700; font-family: monospace;
}
.tag-det { background: var(--blue-dim);   color: var(--blue-light);   }
.tag-ai  { background: var(--purple-dim); color: var(--purple-light); }

/* ── Decision line (code vs AI, paired rows) ─────────────── */

.decision-line {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.dl-head {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 1.25rem 1rem;
}
.dl-head h3 { margin: 0; font-size: 1.0625rem; }
.dl-head-det { background: rgba(59,130,246,0.08);  border-bottom: 1px solid rgba(59,130,246,0.2); }
.dl-head-ai  { background: rgba(139,92,246,0.08);  border-bottom: 1px solid rgba(139,92,246,0.2); }
.dl-cell { padding: 0.6rem 1rem; }
.dl-cell-det { background: rgba(59,130,246,0.04); }
.dl-cell-ai  { background: rgba(139,92,246,0.04); }
.dl-head-det, .dl-cell-det { border-right: 1px solid var(--border); }
.dl-tile {
  height: 100%; box-sizing: border-box;
  padding: 0.875rem 1rem;
  background: var(--bg-2); border-radius: var(--radius-md);
}
.dl-tile h4 { margin: 0 0 0.3rem; font-size: 0.8125rem; font-weight: 700; }
.dl-tile p  { margin: 0; font-size: 0.875rem; }
.dl-tile-det h4 { color: var(--blue-light); }
.dl-tile-ai  h4 { color: var(--purple-light); }
.dl-ops {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.35rem 0.6rem;
  margin-top: 0.7rem; padding-top: 0.6rem;
  border-top: 1px solid var(--border);
}
.dl-ops-label {
  font-size: 0.625rem; font-weight: 700; letter-spacing: 0.07em;
  text-transform: uppercase; color: var(--text-3);
}
.dl-ops a {
  font-family: monospace; font-size: 0.75rem;
  color: var(--purple-light); text-decoration: none;
}
.dl-ops a:hover { text-decoration: underline; }

@media (max-width: 600px) {
  .decision-line { grid-template-columns: 1fr; }
  .dl-head-det, .dl-cell-det { border-right: none; }
}

/* ── Workflow diagram container ───────────────────────────── */

.dag-wrap {
  background: var(--bg-0); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 2rem; overflow-x: auto;
}
.dag-wrap svg { max-width: 100%; display: block; margin: 0 auto; }

/* ── Highlight quote ─────────────────────────────────────── */

.quote-block {
  border-left: 3px solid var(--orange); background: var(--bg-3);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 1rem 1.5rem; margin: 1.5rem 0;
}
.quote-block p { font-size: 0.9375rem; font-style: italic; color: var(--text-1); }

/* ── Two-col layout (text + visual) ──────────────────────── */

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start; }
@media (max-width: 768px) { .split { grid-template-columns: 1fr; } }

/* ── Footer ──────────────────────────────────────────────── */

footer { background: var(--bg-0); border-top: 1px solid var(--border); padding: 3rem 0; }
.footer-inner {
  max-width: 1100px; margin: 0 auto; padding: 0 1.5rem;
  display: flex; justify-content: space-between; align-items: center; gap: 1.5rem; flex-wrap: wrap;
}
.footer-logo { display: flex; align-items: center; gap: 0.5rem; color: var(--text-2); font-weight: 600; }
.footer-logo svg { width: 28px; height: 28px; }
.footer-links { display: flex; gap: 1.5rem; list-style: none; }
.footer-links a { color: var(--text-3); font-size: 0.875rem; }
.footer-links a:hover { color: var(--text-1); }
.footer-copy { color: var(--text-3); font-size: 0.8125rem; }

/* ── Responsive nav ──────────────────────────────────────── */

@media (max-width: 640px) { .hide-sm { display: none !important; } }

/* ── Token usage table ───────────────────────────────────── */

.token-table { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--border); }
.token-table table { width: 100%; border-collapse: collapse; background: var(--bg-3); }
.token-table th {
  padding: 0.75rem 1.25rem; text-align: left; font-size: 0.8125rem;
  font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--text-3); border-bottom: 1px solid var(--border);
}
.token-table th:not(:first-child) { text-align: right; }
.token-table td {
  padding: 0.75rem 1.25rem; font-size: 0.875rem;
  border-bottom: 1px solid rgba(31,45,69,0.6);
  vertical-align: middle; line-height: 1.5;
}
.token-table td:first-child { font-family: var(--mono); color: var(--purple-light); font-size: 0.8125rem; }
.token-table td:not(:first-child) { text-align: right; color: var(--text-2); font-variant-numeric: tabular-nums; }
.token-table tr:last-child td { border-bottom: none; font-weight: 700; color: var(--text-1); }
.token-table tr:last-child td:first-child { font-family: inherit; color: var(--text-1); font-size: 0.875rem; }