:root{
  --ink:#0a1120; --navy:#0d1830; --panel:#111f3d; --line:#22345e;
  --text:#eef2fa; --muted:#b9c6de; --blue:#3d8bff; --teal:#2dd4bf;
  --grad:linear-gradient(90deg,#3d8bff,#2dd4bf);
  --radius:14px; --max:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--ink);color:var(--text);line-height:1.6}
a{color:var(--blue)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--teal);outline-offset:2px}
.skip{position:absolute;left:-9999px;top:0;background:var(--teal);color:#04241f;padding:.6rem 1rem;font-weight:700;z-index:50}
.skip:focus{left:0}
header.site{position:sticky;top:0;background:rgba(10,17,32,.96);border-bottom:1px solid var(--line);z-index:20}
.nav{max-width:var(--max);margin:0 auto;display:flex;align-items:center;gap:1.5rem;padding:.8rem 1.25rem;flex-wrap:wrap}
.wordmark{font-weight:800;letter-spacing:.06em;color:var(--text);text-decoration:none;font-size:1.05rem}
.wordmark .lab{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav nav{display:flex;gap:1.1rem;flex-wrap:wrap;margin-left:auto}
.nav nav a{color:var(--muted);text-decoration:none;font-weight:600}
.nav nav a:hover,.nav nav a[aria-current]{color:var(--text)}
main{max-width:var(--max);margin:0 auto;padding:2rem 1.25rem 4rem}
.hero{padding:3.5rem 0 2.5rem;max-width:46rem}
.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.8rem;color:var(--teal);font-weight:700}
h1{font-size:clamp(2rem,5vw,3.2rem);line-height:1.12;margin:.5rem 0 1rem}
h2{font-size:clamp(1.4rem,3vw,2rem);margin:2.5rem 0 .8rem}
h3{margin:1.2rem 0 .4rem}
.lede{font-size:1.15rem;color:var(--muted)}
.btn{display:inline-block;background:var(--grad);color:#04121f;font-weight:800;padding:.75rem 1.4rem;border-radius:999px;text-decoration:none;border:0;cursor:pointer;font-size:1rem}
.btn.secondary{background:transparent;color:var(--text);border:1px solid var(--line)}
.btnrow{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:1.4rem}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1rem;margin-top:1rem}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.25rem}
.card h3{margin-top:0}
.badge{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.05em;padding:.15rem .6rem;border-radius:999px;border:1px solid var(--teal);color:var(--teal)}
.badge.free{border-color:var(--blue);color:var(--blue)}
.notice{border:1px solid var(--line);border-left:4px solid var(--teal);background:var(--navy);padding:1rem 1.25rem;border-radius:8px;margin:1.5rem 0}
table{border-collapse:collapse;width:100%;margin:1rem 0}
th,td{border:1px solid var(--line);padding:.55rem .7rem;text-align:left;vertical-align:top}
th{background:var(--navy)}
ol.lessons{list-style:none;padding:0;counter-reset:lesson}
ol.lessons li{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1rem 1.25rem;margin:.6rem 0;display:flex;gap:1rem;align-items:flex-start}
ol.lessons .n{counter-increment:lesson;font-weight:800;color:var(--teal);min-width:2rem}
.progresswrap{background:var(--navy);border:1px solid var(--line);border-radius:999px;height:14px;overflow:hidden}
.progressbar{height:100%;background:var(--grad);width:0%}
label.check{display:flex;gap:.6rem;align-items:flex-start;cursor:pointer}
input[type=email]{width:100%;max-width:26rem;padding:.7rem .9rem;border-radius:10px;border:1px solid var(--line);background:var(--navy);color:var(--text);font-size:1rem}
footer.site{border-top:1px solid var(--line);color:var(--muted)}
footer.site .inner{max-width:var(--max);margin:0 auto;padding:2rem 1.25rem;display:flex;gap:2rem;flex-wrap:wrap}
.small{font-size:.9rem;color:var(--muted)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
@media (max-width:640px){.nav{gap:.8rem}.hero{padding:2rem 0 1.5rem}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}