:root{--bg:#07241b;--bg2:#0b3d2e;--panel:#0f4a39;--panel2:#13573f;--line:#1f5e4a;--ink:#eaf4ef;--muted:#9db8ad;--lime:#d9ff6b;--lime2:#c4f04a;--teal:#2dd4a0;--red:#ff7b7b;--r:14px;--sh:0 14px 40px rgba(0,0,0,.35)}
*{box-sizing:border-box}[hidden]{display:none!important}html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:"Plus Jakarta Sans",Inter,sans-serif;line-height:1.15;margin:0 0 .5rem;letter-spacing:-.01em}
h1{font-size:clamp(2rem,4.6vw,3.4rem);font-weight:800}h2{font-size:clamp(1.5rem,2.8vw,2.1rem);font-weight:800}h3{font-size:1.2rem;font-weight:700}
p{margin:0 0 1rem}a{color:var(--lime);text-decoration:none}a:hover{text-decoration:underline}img,svg{max-width:100%}
.wrap{width:min(1120px,100% - 2rem);margin-inline:auto}
section{padding:4rem 0}section.tight{padding:2.5rem 0}
.btn{display:inline-flex;align-items:center;gap:.5rem;background:var(--lime);color:#0b3d2e;font-weight:700;padding:.8rem 1.4rem;border-radius:999px;border:0;cursor:pointer;font-size:.98rem;font-family:inherit;transition:.15s;white-space:nowrap}
.btn:hover{background:var(--lime2);text-decoration:none;transform:translateY(-1px)}.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}.btn.ghost:hover{border-color:var(--lime);color:var(--lime)}
.btn.teal{background:var(--teal);color:#06261c}.btn.sm{padding:.5rem .95rem;font-size:.88rem}.btn[disabled],.btn.off{opacity:.45;pointer-events:none}
.badge{display:inline-flex;align-items:center;gap:.4rem;background:rgba(45,212,160,.16);color:var(--teal);border:1px solid rgba(45,212,160,.35);padding:.3rem .75rem;border-radius:999px;font-size:.78rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase}
.chip{display:inline-block;padding:.2rem .6rem;border-radius:999px;font-size:.74rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase}
.chip.free{background:rgba(217,255,107,.15);color:var(--lime)}.chip.premium{background:rgba(255,255,255,.08);color:var(--muted)}.chip.done{background:rgba(45,212,160,.18);color:var(--teal)}.chip.next{background:var(--lime);color:#0b3d2e}.chip.locked{background:rgba(255,255,255,.06);color:var(--muted)}
/* header */
header{position:sticky;top:0;z-index:50;background:rgba(7,36,27,.85);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.06)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;height:74px}
.brand{display:inline-flex;align-items:center;gap:.6rem;color:var(--ink);font-family:"Plus Jakarta Sans",sans-serif;font-weight:800;font-size:1.25rem;letter-spacing:-.02em}.brand:hover{text-decoration:none}
.brand .mark{width:36px;height:36px;border-radius:10px;background:var(--lime);display:grid;place-items:center}.brand em{font-style:normal;color:var(--lime)}
.menu{display:flex;gap:.15rem;list-style:none;margin:0;padding:0}
.menu a{position:relative;display:inline-flex;align-items:center;gap:.45rem;padding:.6rem .95rem;border-radius:12px;color:var(--muted);font-weight:600;font-size:.93rem;transition:color .2s,background .2s}
.menu a svg{width:17px;height:17px;flex:none;opacity:.7;transition:.2s}
.menu a:hover{color:var(--lime);background:rgba(217,255,107,.07);text-decoration:none}.menu a:hover svg{opacity:1;transform:translateY(-1px)}
.menu a:after{content:"";position:absolute;left:50%;right:50%;bottom:4px;height:2px;border-radius:2px;background:var(--lime);transition:left .25s,right .25s}
.menu a:hover:after{left:.95rem;right:.95rem}
.menu a[aria-current=page]{color:#fff}.menu a[aria-current=page] svg{opacity:1;color:var(--lime)}.menu a[aria-current=page]:after{left:.95rem;right:.95rem;background:var(--teal)}
header:after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:linear-gradient(90deg,transparent 5%,rgba(217,255,107,.55),rgba(45,212,160,.55),transparent 95%)}
.acct{display:flex;align-items:center;gap:.8rem}.acct .lnk{color:var(--ink);font-weight:600;font-size:.92rem}.acct .lnk:hover{color:var(--lime)}
.avatar{width:36px;height:36px;border-radius:50%;background:var(--teal);color:#06261c;font-weight:800;display:grid;place-items:center;font-size:.85rem}
.menu-toggle{display:none;background:none;border:1.5px solid var(--line);border-radius:10px;width:42px;height:42px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}.menu-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px}
/* hero */
.hero{padding:4.5rem 0 3.5rem;background:radial-gradient(900px 500px at 85% -10%,rgba(217,255,107,.14),transparent 60%),radial-gradient(700px 400px at -10% 80%,rgba(45,212,160,.12),transparent 60%)}
.hero .grid{display:grid;grid-template-columns:1.2fr .8fr;gap:3rem;align-items:center}
.hero p.lead{font-size:1.15rem;color:var(--muted)}.hero .cta{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:1.4rem}
.offer{background:linear-gradient(160deg,var(--panel),var(--bg2));border:1px solid var(--line);border-radius:24px;padding:2rem;box-shadow:var(--sh);position:relative;overflow:hidden}
.offer:before{content:"";position:absolute;inset:auto -40px -60px auto;width:220px;height:220px;border-radius:50%;background:rgba(217,255,107,.1)}
.offer .price{font-family:"Plus Jakarta Sans",sans-serif;font-size:3.4rem;font-weight:800;color:var(--lime);line-height:1}.offer .price small{font-size:1.1rem;color:var(--muted);font-weight:600}
.offer ul{list-style:none;margin:1rem 0 1.4rem;padding:0}.offer li{padding:.35rem 0 .35rem 1.7rem;position:relative;color:var(--ink)}.offer li:before{content:"✓";position:absolute;left:0;color:var(--teal);font-weight:800}
.offer .note{font-size:.85rem;color:var(--muted);margin:0}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:2.5rem}.stat{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.07);border-radius:var(--r);padding:1.1rem 1.3rem}.stat b{display:block;font-family:"Plus Jakarta Sans",sans-serif;font-size:1.8rem;color:var(--lime)}.stat span{color:var(--muted);font-size:.9rem}
/* sections */
.eyebrow{color:var(--teal);font-weight:700;letter-spacing:.1em;text-transform:uppercase;font-size:.78rem;margin-bottom:.6rem}.sub{color:var(--muted);font-size:1.05rem}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;margin-top:2rem}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:1.6rem}.card .n{width:44px;height:44px;border-radius:12px;background:rgba(217,255,107,.14);color:var(--lime);display:grid;place-items:center;font-weight:800;font-family:"Plus Jakarta Sans",sans-serif;margin-bottom:1rem;font-size:1.1rem}.card p{color:var(--muted);margin:0}
/* lesson list */
.llist{display:grid;gap:.8rem;margin-top:1.5rem}
.lrow{display:grid;grid-template-columns:56px 1fr auto;gap:1.1rem;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:1rem 1.2rem;color:var(--ink);transition:.15s}
a.lrow:hover{border-color:var(--lime);text-decoration:none;transform:translateX(3px)}.lrow.locked{opacity:.65}
.lrow .num{width:56px;height:56px;border-radius:14px;background:rgba(255,255,255,.05);display:grid;place-items:center;font-family:"Plus Jakarta Sans",sans-serif;font-weight:800;font-size:1.2rem;color:var(--lime)}.lrow.locked .num{color:var(--muted)}.lrow.done .num{background:var(--teal);color:#06261c}
.lrow h3{margin:0 0 .15rem;font-size:1.05rem}.lrow p{margin:0;color:var(--muted);font-size:.9rem}.lrow .meta{display:flex;flex-direction:column;align-items:flex-end;gap:.4rem;font-size:.82rem;color:var(--muted)}
.divider{display:flex;align-items:center;gap:1rem;margin:2rem 0 1rem;color:var(--muted);font-weight:700;letter-spacing:.08em;text-transform:uppercase;font-size:.78rem}.divider:before,.divider:after{content:"";flex:1;height:1px;background:var(--line)}
/* lesson page */
.lwrap{width:min(820px,100% - 2rem);margin-inline:auto;padding:3rem 0}
.lhead{margin-bottom:2rem}.lhead .crumbs{font-size:.9rem;color:var(--muted);margin-bottom:1rem}.lhead .crumbs a{color:var(--muted)}.lhead h1{font-size:clamp(1.8rem,3.6vw,2.6rem)}.lhead .tag{color:var(--teal);font-size:1.1rem;font-weight:600}.lhead .meta{color:var(--muted);font-size:.9rem;display:flex;gap:1rem;flex-wrap:wrap}
.lbody{font-size:1.06rem}.lbody h3{margin-top:2rem;color:var(--lime)}.lbody ul,.lbody ol{padding-left:1.3rem}.lbody li{margin:.35rem 0}.lbody strong{color:#fff}
.fig{margin:1.8rem 0;background:var(--bg2);border:1px solid var(--line);border-radius:var(--r);padding:1rem}.fig svg{width:100%;height:auto;display:block}.fig figcaption{text-align:center;color:var(--muted);font-size:.85rem;margin-top:.6rem}
.terms{background:rgba(45,212,160,.08);border-left:4px solid var(--teal);border-radius:0 var(--r) var(--r) 0;padding:1.2rem 1.4rem;margin:2rem 0}.terms h4{margin:0 0 .6rem;color:var(--teal);text-transform:uppercase;letter-spacing:.08em;font-size:.8rem}.terms dl{margin:0;display:grid;grid-template-columns:max-content 1fr;gap:.4rem 1rem}.terms dt{font-weight:700;color:#fff}.terms dd{margin:0;color:var(--muted);font-size:.95rem}
.tip{background:rgba(217,255,107,.1);border:1px dashed rgba(217,255,107,.45);border-radius:var(--r);padding:1.1rem 1.3rem;margin:1.5rem 0}.tip strong{color:var(--lime)}
.quiz{margin-top:3rem;background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:2rem}.quiz h2{font-size:1.5rem}.quiz>p{color:var(--muted)}
.qq{padding:1rem 0;border-top:1px solid var(--line)}.qq p{font-weight:600;margin:0 0 .6rem}.qq label{display:flex;gap:.6rem;align-items:flex-start;padding:.5rem .7rem;border-radius:10px;cursor:pointer;font-size:.97rem}.qq label:hover{background:rgba(255,255,255,.05)}.qq input{margin-top:.3rem;accent-color:var(--lime)}
.qq label.ok{background:rgba(45,212,160,.16);color:var(--teal)}.qq label.bad{background:rgba(255,123,123,.14);color:var(--red)}
.result{display:flex;gap:1rem;align-items:center;background:rgba(45,212,160,.12);border:1px solid rgba(45,212,160,.4);border-radius:var(--r);padding:1.2rem 1.4rem;margin-bottom:1rem}.result.fail{background:rgba(255,123,123,.1);border-color:rgba(255,123,123,.4)}.result .big{font-family:"Plus Jakarta Sans",sans-serif;font-size:2rem;font-weight:800;color:var(--teal)}.result.fail .big{color:var(--red)}.result p{margin:0}
.lnav{display:flex;justify-content:space-between;gap:1rem;margin-top:2.5rem;padding-top:1.5rem;border-top:1px solid var(--line);flex-wrap:wrap}
.lockbox{text-align:center;background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:3rem 2rem;max-width:620px;margin:3rem auto}.lockbox .ico{font-size:2.6rem;margin-bottom:.5rem}.lockbox p{color:var(--muted)}
/* progress */
.pgrid{display:grid;grid-template-columns:1fr 2fr;gap:1.5rem;margin-top:1.5rem;align-items:start}
.ring{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:2rem;text-align:center}.ring .pct{font-family:"Plus Jakarta Sans",sans-serif;font-size:3.2rem;font-weight:800;color:var(--lime);line-height:1}.ring p{color:var(--muted);margin:.4rem 0 0}
.bar{height:12px;background:rgba(255,255,255,.08);border-radius:999px;overflow:hidden;margin:1.2rem 0}.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--teal),var(--lime));border-radius:999px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:1.6rem}
table.tbl{width:100%;border-collapse:collapse;font-size:.95rem}.tbl th{text-align:left;color:var(--muted);font-weight:600;font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;padding:.6rem .5rem;border-bottom:1px solid var(--line)}.tbl td{padding:.75rem .5rem;border-bottom:1px solid rgba(255,255,255,.05)}
/* forms */
.form{max-width:460px;margin:3rem auto;background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:2.2rem;box-shadow:var(--sh)}.form h1{font-size:1.8rem}.form .sub{font-size:.95rem;margin-bottom:1.4rem}
label.f{display:block;margin-bottom:1rem;font-size:.9rem;font-weight:600}label.f span{display:block;margin-bottom:.35rem;color:var(--muted)}
input[type=text],input[type=email],input[type=password],input[type=number],textarea,select{width:100%;padding:.75rem .9rem;border-radius:10px;border:1.5px solid var(--line);background:var(--bg);color:var(--ink);font:inherit}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--lime)}
textarea{min-height:140px;resize:vertical}.chk{display:flex;align-items:center;gap:.5rem;font-size:.9rem}.chk input{width:auto;margin:0}
.msg{background:rgba(45,212,160,.12);border:1px solid rgba(45,212,160,.4);border-radius:10px;padding:.8rem 1rem;margin-bottom:1rem;font-size:.95rem}.msg.err{background:rgba(255,123,123,.12);border-color:rgba(255,123,123,.4);color:#ffd0d0}
.err-text{color:var(--red);font-size:.85rem}
/* pricing */
.plans{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;max-width:860px;margin:2rem auto 0}.plan{background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:2rem;position:relative}.plan.hot{border-color:var(--lime);box-shadow:0 0 0 4px rgba(217,255,107,.12)}
.plan .tagtop{position:absolute;top:-14px;left:2rem;background:var(--lime);color:#0b3d2e;font-weight:800;font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;padding:.3rem .8rem;border-radius:999px}
.plan .price{font-family:"Plus Jakarta Sans",sans-serif;font-size:2.8rem;font-weight:800;color:var(--lime);margin:.6rem 0}.plan .price small{font-size:1rem;color:var(--muted)}.plan ul{list-style:none;padding:0;margin:1rem 0 1.5rem}.plan li{padding:.35rem 0 .35rem 1.6rem;position:relative}.plan li:before{content:"✓";position:absolute;left:0;color:var(--teal);font-weight:800}
/* two-col text */
.two{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}.two p{color:var(--muted)}
.band{background:linear-gradient(120deg,var(--panel2),var(--bg2));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.band .in{display:flex;justify-content:space-between;align-items:center;gap:2rem;flex-wrap:wrap}.band h2{margin:0}
.faq details{border-bottom:1px solid var(--line);padding:1rem 0}.faq summary{cursor:pointer;font-weight:700;font-size:1.05rem;list-style:none;display:flex;justify-content:space-between}.faq summary:after{content:"+";color:var(--lime);font-size:1.3rem}.faq details[open] summary:after{content:"–"}.faq p{color:var(--muted);margin:.6rem 0 0}
.risk{font-size:.95rem;color:var(--muted)}.risk h3{color:var(--ink);margin-top:1.6rem}
/* footer */
footer{background:#051b14;border-top:1px solid rgba(255,255,255,.06);padding:3rem 0 1.5rem;margin-top:2rem}
.foot{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:2rem}.foot p{color:var(--muted);font-size:.92rem}.foot h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;color:var(--teal);margin-bottom:.8rem}.foot ul{list-style:none;padding:0;margin:0}.foot li{margin:.4rem 0;color:var(--muted);font-size:.93rem}.foot li a{color:var(--muted)}.foot li a:hover{color:var(--lime)}
.copy{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-top:2rem;padding-top:1.2rem;border-top:1px solid rgba(255,255,255,.06);color:var(--muted);font-size:.82rem}
@media(max-width:900px){.hero .grid,.two,.pgrid,.plans{grid-template-columns:1fr}.cards{grid-template-columns:1fr 1fr}.stats{grid-template-columns:1fr 1fr}.foot{grid-template-columns:1fr 1fr}}
@media(max-width:760px){.menu-toggle{display:flex}.acct .lnk{display:none}nav{position:absolute;top:74px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);display:none;padding:.8rem 1rem}nav.open{display:block}.menu{flex-direction:column}.menu a{padding:.85rem 1rem;font-size:1rem}.menu a:after{display:none}.menu a[aria-current=page]{background:rgba(217,255,107,.1);color:var(--lime)}
.cards{grid-template-columns:1fr}.lrow{grid-template-columns:44px 1fr}.lrow .meta{grid-column:2;flex-direction:row;align-items:center}.lrow .num{width:44px;height:44px}.terms dl{grid-template-columns:1fr}.foot{grid-template-columns:1fr}.stats{grid-template-columns:1fr 1fr}}