:root {
  --bg: #0b1310;
  --bg-elev: #111a16;
  --bg-card: #131e19;
  --fg: #e8efeb;
  --fg-mute: #8a9a92;
  --fg-dim: #5a6b64;
  --line: #1d2922;
  --accent: #10b981;
  --accent-2: #06b6d4;
  --accent-3: #f59e0b;
  --grad-1: linear-gradient(135deg, #10b981 0%, #06b6d4 50%, #6366f1 100%);
}

[data-theme="light"] {
  --bg: #f6faf8;
  --bg-elev: #ffffff;
  --bg-card: #ffffff;
  --fg: #0b1310;
  --fg-mute: #4a5b53;
  --fg-dim: #7c8a82;
  --line: #dfe9e3;
  --accent: #047857;
  --accent-2: #0e7490;
  --accent-3: #b45309;
  --grad-1: linear-gradient(135deg, #047857 0%, #0e7490 50%, #4338ca 100%);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg); color: var(--fg);
  line-height: 1.6; overflow-x: hidden;
  transition: background-color .2s ease, color .2s ease;
}

a { color: var(--accent); text-decoration: none; transition: color .15s; }
a:hover { color: var(--accent-2); }

code, pre, .mono { font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* NAV */
nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px; max-width: 1180px; margin: 0 auto;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: 'JetBrains Mono', monospace; font-weight: 600; font-size: 16px;
  letter-spacing: -0.02em; color: var(--fg);
}
.brand-mark {
  width: 26px; height: 26px; background: var(--grad-1);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
}
.brand-mark svg { width: 16px; height: 16px; }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a { color: var(--fg-mute); font-size: 14px; font-weight: 500; }
.nav-links a:hover { color: var(--fg); }
.nav-cta {
  padding: 7px 13px; border: 1px solid var(--line);
  border-radius: 6px; background: var(--bg-elev);
  color: var(--fg) !important; font-size: 13px;
}
.nav-cta:hover { border-color: var(--fg-mute); }
.theme-toggle {
  width: 34px; height: 34px; border-radius: 6px;
  border: 1px solid var(--line); background: var(--bg-elev);
  cursor: pointer; color: var(--fg);
  display: flex; align-items: center; justify-content: center;
  transition: border-color .15s, color .15s;
}
.theme-toggle:hover { border-color: var(--fg-mute); }
.theme-toggle svg { width: 15px; height: 15px; }
.theme-toggle .icon-sun { display: none; }
[data-theme="light"] .theme-toggle .icon-sun { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

/* HERO */
.hero { padding: 80px 0 60px; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 11px; border: 1px solid var(--line);
  border-radius: 100px; background: var(--bg-elev);
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  color: var(--fg-mute); margin-bottom: 24px;
}
.eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.05; letter-spacing: -0.03em;
  margin-bottom: 20px; font-weight: 700;
}
h1 .grad {
  background: var(--grad-1);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p.lead { font-size: 18px; color: var(--fg-mute); margin-bottom: 32px; max-width: 540px; }

.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: 8px;
  font-weight: 500; font-size: 14px;
  transition: background .15s, border-color .15s, color .15s;
  cursor: pointer; border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: white !important; }
.btn-primary:hover { background: var(--accent-2); }
.btn-ghost { background: var(--bg-elev); color: var(--fg) !important; border-color: var(--line); }
.btn-ghost:hover { border-color: var(--fg-mute); }

.hero-visual {
  position: relative; aspect-ratio: 1 / 1;
  border-radius: 12px; overflow: hidden;
  border: 1px solid var(--line); background: var(--bg-elev);
}
.hero-visual img { width: 100%; height: 100%; object-fit: cover; display: block; }
.hero-visual .hero-img { position: absolute; inset: 0; transition: opacity .25s ease; }
.hero-visual .hero-img--light { opacity: 0; }
[data-theme="light"] .hero-visual .hero-img--dark { opacity: 0; }
[data-theme="light"] .hero-visual .hero-img--light { opacity: 1; }

/* SECTION */
section { padding: 80px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-tag {
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  color: var(--accent); letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 14px;
}
h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(30px, 4vw, 42px); line-height: 1.1;
  letter-spacing: -0.02em; font-weight: 700; margin-bottom: 16px;
}
.section-head p { color: var(--fg-mute); font-size: 17px; }

/* PIPELINE */
.pipeline {
  display: grid; grid-template-columns: repeat(5, 1fr);
  gap: 12px; margin-top: 40px;
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: 14px; padding: 24px;
}
.pipe-stage {
  text-align: center; padding: 18px 12px;
  border-radius: 10px; background: var(--bg-elev);
  border: 1px solid var(--line);
  position: relative;
  transition: border-color .15s;
}
.pipe-stage:hover { border-color: var(--fg-mute); }
.pipe-stage:not(:last-child)::after {
  content: '→'; position: absolute; right: -16px; top: 50%;
  transform: translateY(-50%); color: var(--fg-dim);
  font-size: 18px; font-family: 'JetBrains Mono', monospace;
  z-index: 1;
}
.pipe-stage h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px; color: var(--accent); margin-bottom: 6px;
  font-weight: 600;
}
.pipe-stage p { font-size: 12.5px; color: var(--fg-mute); line-height: 1.5; }

/* FEATURES */
.features {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}
.feature {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: 12px; padding: 28px;
  transition: border-color .15s;
}
.feature:hover { border-color: var(--fg-mute); }
.feature-icon {
  width: 40px; height: 40px; border-radius: 8px;
  background: var(--bg-elev); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px; color: var(--accent);
}
.feature-icon svg { width: 20px; height: 20px; }
.feature h3 { font-size: 17px; margin-bottom: 8px; font-weight: 600; font-family: 'Space Grotesk', sans-serif; }
.feature p { color: var(--fg-mute); font-size: 14.5px; line-height: 1.6; }

/* SUBCMD */
.subcmd-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.subcmd {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: 12px; padding: 24px;
  transition: border-color .15s;
}
.subcmd:hover { border-color: var(--fg-mute); }
.subcmd .cmd {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13.5px; color: var(--accent);
  background: var(--bg-elev);
  border: 1px solid var(--line);
  padding: 5px 10px; border-radius: 5px;
  display: inline-block; margin-bottom: 12px;
}
.subcmd h3 { font-size: 17px; margin-bottom: 10px; font-family: 'Space Grotesk', sans-serif; }
.subcmd p { color: var(--fg-mute); font-size: 14px; }

/* CODE */
.code-block {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: 10px; overflow: hidden;
}
.code-head {
  padding: 11px 16px; border-bottom: 1px solid var(--line);
  display: flex; align-items: center; gap: 10px;
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  color: var(--fg-dim);
  background: var(--bg-elev);
}
.code-head .dots { display: flex; gap: 6px; }
.code-head .dots span { width: 9px; height: 9px; border-radius: 50%; background: var(--line); }
.code-block pre {
  padding: 20px; font-size: 13px; line-height: 1.7;
  color: var(--fg); overflow-x: auto;
}
.code-block .kw { color: var(--accent-2); }
.code-block .str { color: var(--accent); }
.code-block .com { color: var(--fg-dim); }
.code-block .fn { color: var(--accent-3); }

/* TWO-COL */
.arch-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.arch-text h2 { text-align: left; }
.arch-text > p { color: var(--fg-mute); margin-top: 16px; font-size: 16px; }
.arch-text ul { list-style: none; margin-top: 24px; }
.arch-text li {
  padding: 14px 0; border-top: 1px solid var(--line);
  display: flex; gap: 14px; align-items: start;
}
.arch-text li:last-child { border-bottom: 1px solid var(--line); }
.arch-text li .num {
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent); font-size: 13px; min-width: 28px;
}
.arch-text li strong { display: block; margin-bottom: 2px; }
.arch-text li span { color: var(--fg-mute); font-size: 14px; }

/* CTA */
.cta-section {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: 14px; padding: 56px 40px; text-align: center;
  margin: 60px 0;
}
.cta-section p { color: var(--fg-mute); margin: 12px 0 28px; font-size: 17px; }
.cta-section .cta-row { justify-content: center; }

/* FOOTER */
footer { border-top: 1px solid var(--line); padding: 40px 0; margin-top: 40px; }
.foot {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 16px; color: var(--fg-mute); font-size: 13px;
}
.foot-links { display: flex; gap: 24px; }
.foot-links a { color: var(--fg-mute); }
.foot-links a:hover { color: var(--fg); }

/* RESPONSIVE */
@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { max-width: 480px; margin: 0 auto; }
  .features, .subcmd-grid { grid-template-columns: 1fr; }
  .arch-grid { grid-template-columns: 1fr; }
  .pipeline { grid-template-columns: 1fr; }
  .pipe-stage:not(:last-child)::after { content: '↓'; right: 50%; top: auto; bottom: -16px; transform: translateX(50%); }
  .nav-links { gap: 16px; }
  .nav-links a:not(.nav-cta) { display: none; }
}