@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700;800&family=Inter:wght@400;500;600&display=swap');

:root{
  --ink:#0d1117;
  --panel:#131a23;
  --line:#22303f;
  --paper:#e9edf1;
  --dim:#7d8fa3;
  --lime:#c8f24a;
  --saffron:#ff9a3c;
  --radius:2px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:'Inter',sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4,.brand,.btn,.eyebrow,.num,.play-badge,.tech-tags,nav a{
  font-family:'JetBrains Mono',monospace;
}

.wrap{
  max-width:880px;
  margin:0 auto;
  padding:0 24px;
}

/* faint code-grid backdrop */
.grid-bg{
  position:fixed;
  inset:0;
  z-index:-1;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size:64px 64px;
  opacity:0.18;
  mask-image:linear-gradient(to bottom, black, transparent 70%);
}

/* header */
.site-header{
  position:sticky;
  top:0;
  z-index:10;
  backdrop-filter:blur(8px);
  background:rgba(13,17,23,0.85);
  border-bottom:1px solid var(--line);
}
.header-row{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:16px 24px;
}
.brand{font-weight:800; font-size:1rem; letter-spacing:0.02em;}
.brand-dim{color:var(--dim);}
nav a{
  color:var(--dim);
  text-decoration:none;
  margin-left:22px;
  font-size:0.85rem;
  transition:color 0.15s ease;
}
nav a:hover{color:var(--lime);}

/* hero */
.hero{
  padding:96px 24px 72px;
}
.eyebrow{
  color:var(--lime);
  font-size:0.8rem;
  letter-spacing:0.05em;
  margin:0 0 18px;
}
h1{
  font-size:clamp(2rem, 5vw, 3.1rem);
  line-height:1.18;
  margin:0 0 22px;
  font-weight:800;
  letter-spacing:-0.01em;
  max-width:15ch;
}
.hl{color:var(--lime);}
.hero-sub{
  max-width:56ch;
  color:var(--dim);
  font-size:1.05rem;
  margin:0 0 32px;
}
.hero-links{display:flex; gap:14px; flex-wrap:wrap;}
.btn{
  display:inline-block;
  background:var(--lime);
  color:var(--ink);
  text-decoration:none;
  padding:12px 20px;
  border-radius:var(--radius);
  font-weight:700;
  font-size:0.85rem;
  border:1px solid var(--lime);
  transition:transform 0.15s ease, background 0.15s ease;
}
.btn:hover{transform:translateY(-2px);}
.btn-ghost{
  background:transparent;
  color:var(--paper);
  border:1px solid var(--line);
}
.btn-ghost:hover{border-color:var(--lime); color:var(--lime);}

/* sections */
.section{
  padding:64px 24px;
  border-top:1px solid var(--line);
}
h2{
  font-size:1.3rem;
  margin:0 0 28px;
  display:flex;
  align-items:baseline;
  gap:12px;
}
.num{color:var(--saffron); font-size:0.85rem;}
.lead{
  color:var(--paper);
  max-width:68ch;
  margin:0 0 18px;
  font-size:1rem;
}

/* app cards - clipped puzzle-piece corner as signature */
.app-card{
  background:var(--panel);
  border:1px solid var(--line);
  padding:28px 28px 26px;
  margin-bottom:26px;
  position:relative;
  clip-path:polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}
.app-card-top{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:6px;
}
.app-card h3{
  margin:0;
  font-size:1.15rem;
  color:var(--paper);
}
.tagline{
  color:var(--lime);
  font-weight:500;
  margin:0 0 12px;
}
.app-card p{margin:0 0 14px; color:var(--dim);}
.feature-list{
  margin:0 0 16px;
  padding-left:18px;
  color:var(--paper);
}
.feature-list li{margin-bottom:6px; font-size:0.95rem;}
.tech-tags{
  font-size:0.78rem;
  color:var(--saffron);
  margin:0;
}
.play-badge{
  color:var(--ink);
  background:var(--lime);
  text-decoration:none;
  font-size:0.75rem;
  font-weight:700;
  padding:7px 12px;
  border-radius:var(--radius);
  white-space:nowrap;
}
.play-badge-soon{
  background:transparent;
  color:var(--dim);
  border:1px dashed var(--line);
}

/* stack */
.stack-grid{
  display:grid;
  grid-template-columns:repeat(2, 1fr);
  gap:24px;
}
.stack-col h4{
  color:var(--lime);
  font-size:0.85rem;
  margin:0 0 8px;
}
.stack-col p{
  color:var(--dim);
  margin:0;
  font-size:0.92rem;
}

/* footer */
.site-footer{
  border-top:1px solid var(--line);
  padding:28px 24px 40px;
  font-size:0.8rem;
  color:var(--dim);
}
.site-footer .wrap{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:8px;
}
.footer-dim{color:var(--line);}

@media (max-width:640px){
  .hero{padding:64px 20px 48px;}
  .stack-grid{grid-template-columns:1fr;}
  .app-card{padding:22px 20px;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .btn{transition:none;}
}