:root {
  --bg: #0f1419;
  --bg-elevated: #171e26;
  --bg-card: #1c2430;
  --text: #e8eef4;
  --muted: #9aabbc;
  --accent: #5b9fd4;
  --accent-strong: #3d8bc9;
  --border: rgba(232, 238, 244, 0.1);
  --radius: 12px;
  --font: "DM Sans", system-ui, sans-serif;
  --serif: "Instrument Serif", Georgia, serif;
  --max: 1040px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body.fraccalc{
  margin:0;min-height:100vh;display:flex;flex-direction:column;
  font-family:var(--font);font-size:1rem;line-height:1.45;color:var(--text);
  background:
    radial-gradient(900px 420px at 8% -8%,rgba(91,159,212,.16),transparent 55%),
    radial-gradient(700px 360px at 100% 0%,rgba(91,159,212,.07),transparent 50%),
    var(--bg);
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.skip{position:absolute;left:-999px;top:0;background:var(--accent);color:#061018;padding:.4rem .8rem;z-index:100}
.skip:focus{left:.75rem;top:.75rem}
.wrap{width:min(100% - 2rem,var(--max));margin-inline:auto}
.site-header{flex:0 0 auto;border-bottom:1px solid var(--border);background:rgba(15,20,25,.85);backdrop-filter:blur(10px)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;padding:.7rem 0;gap:1rem;flex-wrap:wrap}
.logo{font-weight:700;letter-spacing:-.02em;color:var(--text);text-decoration:none}
.site-header nav{display:flex;gap:1rem;flex-wrap:wrap}
.site-header nav a{color:var(--muted);font-size:.9rem;font-weight:500;text-decoration:none}
.site-header nav a:hover,.site-header nav a[aria-current="page"]{color:var(--text)}
.page{flex:1 1 auto;display:flex;flex-direction:column;gap:1.25rem;padding:1.25rem 0 1.5rem}
.eyebrow{margin:0 0 .35rem;color:var(--accent);font-size:.75rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase}
.hero-fc{
  display:grid;gap:1.25rem 1.5rem;
  grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);
  align-items:center;padding:.35rem 0 .5rem;
}
.app-icon{
  width:72px;height:72px;border-radius:16px;margin:0 0 .75rem;
  border:1px solid var(--border);background:var(--bg-elevated);
}
.hero-fc h1{
  margin:0 0 .2rem;font-family:var(--serif);font-weight:400;
  font-size:clamp(1.85rem,3.2vw,2.6rem);line-height:1.1;letter-spacing:-.02em;
  background:linear-gradient(120deg,#e8eef4 35%,#5b9fd4 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.subtitle{margin:0 0 .55rem;color:var(--text);font-weight:600;font-size:1rem}
.lede{margin:0 0 .35rem;color:var(--text);font-size:1.02rem;font-weight:600}
.sublede{margin:0 0 1rem;color:var(--muted);font-size:.95rem;max-width:38ch}
.actions{display:flex;flex-wrap:wrap;gap:.65rem}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:.55rem 1rem;border-radius:999px;font-weight:600;font-size:.88rem;
  text-decoration:none;border:1px solid transparent;white-space:nowrap;
}
.btn.primary{background:var(--accent);color:#061018}
.btn.primary:hover{background:var(--accent-strong);text-decoration:none}
.btn.ghost{border-color:var(--border);color:var(--text)}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
.play-note{margin:.65rem 0 0;color:var(--muted);font-size:.78rem}
.hero-art{
  width:100%;height:auto;border-radius:var(--radius);
  border:1px solid var(--border);display:block;background:var(--bg-elevated);
}
.section-title{margin:0 0 .85rem;font-size:1.05rem;letter-spacing:-.01em}
.shots{
  display:grid;gap:.75rem;
  grid-template-columns:repeat(5,minmax(0,1fr));
}
.shot{
  margin:0;
  background:linear-gradient(180deg,var(--bg-card),var(--bg-elevated));
  border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;
}
.shot img{display:block;width:100%;height:auto;background:#0a0e12}
.shot figcaption{display:flex;flex-direction:column;gap:.15rem;padding:.6rem .65rem .75rem}
.shot figcaption strong{font-size:.8rem;color:var(--text)}
.shot figcaption span{font-size:.72rem;color:var(--muted)}
.features-card,.pro,.other-apps{
  background:linear-gradient(180deg,var(--bg-card),var(--bg-elevated));
  border:1px solid var(--border);border-radius:var(--radius);padding:.95rem 1rem;
}
.features-card ul{margin:0;padding-left:1.15rem;color:var(--muted)}
.features-card li{margin-bottom:.35rem}
.pro p,.other-apps p{margin:0 0 .55rem;color:var(--muted);font-size:.95rem}
.pro strong,.other-apps strong{color:var(--text)}
.site-footer{flex:0 0 auto;border-top:1px solid var(--border);padding:.7rem 0 .9rem;margin-top:.25rem}
.site-footer .wrap{display:flex;flex-wrap:wrap;gap:.4rem 1rem;justify-content:space-between;align-items:center}
.footer-links{display:flex;flex-wrap:wrap;gap:.75rem 1rem;align-items:center}
.site-footer p,.site-footer a{margin:0;color:var(--muted);font-size:.8rem}
.site-footer code{color:var(--text);font-size:.75rem}
@media (max-width:900px){
  .hero-fc{grid-template-columns:1fr}
  .shots{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:560px){
  .site-header nav{gap:.75rem}
  .shots{grid-template-columns:repeat(2,minmax(0,1fr))}
}