:root {
  color-scheme: dark;
  --ink: #eefbf5;
  --muted: #97ada3;
  --surface: #07110d;
  --surface-2: #0b1a14;
  --line: rgba(190, 255, 224, 0.14);
  --accent: #67f6b2;
  --accent-dark: #073b29;
  --warning: #ffd166;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}
a { color: inherit; }
.site-header {
  position: absolute;
  z-index: 10;
  inset: 0 0 auto;
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(24px, 5vw, 80px);
  border-bottom: 1px solid var(--line);
}
.brand {
  text-decoration: none;
  font: 800 1.25rem/1 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: -0.04em;
}
.brand span { color: var(--accent); }
nav { display: flex; align-items: center; gap: 28px; font-size: 0.9rem; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--ink); }
.nav-cta { color: var(--ink); border-bottom: 1px solid var(--accent); padding: 8px 0; }

.hero {
  min-height: 100svh;
  padding: 132px clamp(24px, 5vw, 80px) 64px;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(440px, 1.1fr);
  align-items: center;
  gap: clamp(48px, 7vw, 120px);
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 78% 46%, rgba(38, 171, 111, 0.15), transparent 32%), var(--surface);
}
.hero-grid {
  position: absolute;
  inset: 0 0 0 50%;
  opacity: .22;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(90deg, transparent, #000 30%);
}
.hero-copy, .terminal { position: relative; z-index: 1; }
.hero-copy { animation: rise .7s ease both; }
.eyebrow {
  margin: 0 0 20px;
  color: var(--accent);
  font: 700 .74rem/1.2 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: .14em;
  text-transform: uppercase;
}
h1, h2, h3 { margin: 0; line-height: .98; letter-spacing: -.055em; }
h1 { max-width: 740px; font-size: clamp(3.6rem, 7.4vw, 7.2rem); }
h1 em { color: var(--accent); font-style: normal; }
.hero-lede { max-width: 600px; margin: 30px 0; color: var(--muted); font-size: clamp(1rem, 1.4vw, 1.2rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button {
  display: inline-flex;
  align-items: center;
  gap: 28px;
  min-height: 50px;
  padding: 0 20px;
  text-decoration: none;
  font-weight: 750;
  transition: transform .2s ease, background .2s ease, color .2s ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--accent-dark); background: var(--accent); }
.button-primary:hover { background: #92ffca; }
.button-quiet { color: var(--muted); border: 1px solid var(--line); }
.button-quiet:hover { color: var(--ink); border-color: rgba(190,255,224,.35); }

.terminal {
  background: rgba(3, 10, 7, .88);
  border: 1px solid rgba(103, 246, 178, .25);
  box-shadow: 0 38px 90px rgba(0,0,0,.4), inset 0 0 70px rgba(103,246,178,.03);
  font: .88rem/1.75 ui-monospace, SFMono-Regular, Consolas, monospace;
  transform: perspective(1100px) rotateY(-4deg) rotateX(1deg);
  animation: terminal-in .9s .12s cubic-bezier(.2,.8,.2,1) both;
}
.terminal-bar, .terminal-status { display: flex; align-items: center; border-color: var(--line); color: var(--muted); }
.terminal-bar { height: 48px; padding: 0 16px; gap: 8px; border-bottom: 1px solid var(--line); }
.terminal-bar span { width: 8px; height: 8px; border-radius: 50%; background: #294036; }
.terminal-bar strong { margin-left: 8px; font-weight: 500; font-size: .75rem; }
.terminal-body { min-height: 340px; padding: 28px; }
.terminal-body p { margin: 0 0 8px; white-space: nowrap; }
.terminal-body b, .terminal-status span:first-child { color: var(--accent); }
.terminal-body .muted { color: #71877d; margin-bottom: 20px; }
.terminal-body .warning { color: var(--warning); }
.terminal-status { justify-content: space-between; padding: 9px 16px; border-top: 1px solid var(--line); font-size: .68rem; text-transform: uppercase; letter-spacing: .08em; }
.cursor { display: inline-block; width: 8px; height: 1.1em; vertical-align: middle; background: var(--accent); animation: blink 1s steps(1) infinite; }

.proof, .curriculum, .final-cta { padding: clamp(96px, 12vw, 180px) clamp(24px, 8vw, 140px); }
.proof { background: #091610; }
.section-intro { max-width: 760px; margin-bottom: 72px; }
h2 { font-size: clamp(2.7rem, 5.5vw, 5.6rem); }
.practice-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.practice-list li { display: grid; grid-template-columns: 90px 1fr; gap: 30px; padding: 34px 0; border-bottom: 1px solid var(--line); }
.practice-list > li > span { color: var(--accent); font: 700 .8rem ui-monospace, monospace; }
.practice-list h3 { font-size: clamp(1.4rem, 2vw, 2rem); letter-spacing: -.025em; }
.practice-list p { max-width: 630px; margin: 10px 0 0; color: var(--muted); }

.curriculum { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(70px, 10vw, 160px); align-items: start; }
.curriculum-copy { position: sticky; top: 90px; }
.curriculum-copy p:last-child { max-width: 520px; color: var(--muted); font-size: 1.05rem; }
.track-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.track-list li { padding: 30px 0; border-bottom: 1px solid var(--line); }
.track-list span { display: block; margin-bottom: 7px; font-weight: 750; font-size: 1.2rem; }
.track-list code { color: var(--muted); font-size: .78rem; }

.final-cta { text-align: center; background: var(--accent); color: var(--accent-dark); }
.final-cta .eyebrow { color: #176043; }
.final-cta .button { margin-top: 36px; background: var(--surface); color: var(--accent); }
footer { display: flex; align-items: center; gap: 28px; padding: 38px clamp(24px, 5vw, 80px); color: var(--muted); font-size: .8rem; }
footer p { margin-right: auto; }
footer div { display: flex; gap: 22px; }
footer a { text-decoration: none; }
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .65s ease, transform .65s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
.not-found { min-height: 100svh; display: grid; place-items: center; padding: 24px; }
.not-found main { max-width: 700px; }
.not-found p:not(.eyebrow) { color: var(--muted); margin: 24px 0; }

@keyframes rise { from { opacity: 0; transform: translateY(18px); } }
@keyframes terminal-in { from { opacity: 0; transform: perspective(1100px) rotateY(-4deg) rotateX(1deg) translateY(28px) scale(.98); } }
@keyframes blink { 50% { opacity: 0; } }
@media (max-width: 900px) {
  nav > a:not(.nav-cta) { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 128px; }
  .hero-grid { inset: 0; }
  .terminal { transform: none; }
  .curriculum { grid-template-columns: 1fr; }
  .curriculum-copy { position: static; }
}
@media (max-width: 560px) {
  .site-header { height: 66px; }
  h1 { font-size: clamp(3rem, 15vw, 4.6rem); }
  .hero { padding-top: 104px; }
  .terminal { margin: 0 -12px; font-size: .68rem; }
  .terminal-body { min-height: 275px; padding: 20px 14px; overflow: hidden; }
  .practice-list li { grid-template-columns: 44px 1fr; gap: 14px; }
  footer { align-items: flex-start; flex-wrap: wrap; }
  footer p { width: 100%; margin: 0; }
  footer div { flex-wrap: wrap; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}