:root{--bg:#fffaf5;--ink:#1f2433;--muted:#5b6275;--brand:#3b5bdb;--brand2:#e8590c;--card:#fff;--line:#ece4da;--soft:#f3efff;--r:16px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;font-size:17px}
img{max-width:100%}a{color:var(--brand)}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
header.nav{position:sticky;top:0;background:rgba(255,250,245,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);z-index:10}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:12px}
.logo{font-weight:800;text-decoration:none;color:var(--ink);font-size:1.1rem}.logo span{color:var(--brand2)}
.nav ul{display:flex;gap:22px;list-style:none;margin:0;padding:0}.nav ul a{color:var(--muted);text-decoration:none;font-size:.95rem}
.btn{display:inline-block;background:var(--brand);color:#fff;padding:13px 22px;border-radius:999px;text-decoration:none;font-weight:700;border:0;cursor:pointer;font-size:1rem;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(59,91,219,.3)}
.btn.ghost{background:transparent;color:var(--brand);border:2px solid var(--brand)}.btn.sm{padding:9px 16px;font-size:.9rem}
section{padding:80px 0}h1,h2,h3{line-height:1.2;margin:0 0 .5em}
h1{font-size:clamp(2.1rem,5vw,3.4rem);letter-spacing:-.02em}h2{font-size:clamp(1.7rem,3.5vw,2.4rem);letter-spacing:-.01em}
.lead{font-size:1.2rem;color:var(--muted);max-width:640px}
.center{text-align:center}.center .lead{margin:0 auto 1em}
.eyebrow{display:inline-block;background:var(--soft);color:var(--brand);font-weight:700;font-size:.85rem;padding:5px 12px;border-radius:999px;margin-bottom:16px}
.hero{padding:90px 0 70px}.hero .grid{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0 12px}.note{font-size:.9rem;color:var(--muted)}
.hero-card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:26px;box-shadow:0 20px 50px rgba(31,36,51,.08)}
.hero-card li{margin:8px 0}.hero-card ul{padding-left:20px;margin:0}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px}
.card .num{width:40px;height:40px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:14px}
.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.problem ul{list-style:none;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:28px}
.problem li{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.sample{background:var(--card);border:2px dashed #c9bfff;border-radius:22px;padding:30px;margin-top:30px;position:relative}
.badge{position:absolute;top:-14px;left:24px;background:var(--brand2);color:#fff;font-size:.8rem;font-weight:800;padding:4px 12px;border-radius:999px;letter-spacing:.04em}
.prompt{background:#1f2433;color:#e9ecff;border-radius:12px;padding:16px 18px;font-family:ui-monospace,Menlo,monospace;font-size:.9rem;white-space:pre-wrap;position:relative}
.copy{position:absolute;top:8px;right:8px;background:#3b4260;color:#fff;border:0;border-radius:8px;padding:4px 10px;font-size:.75rem;cursor:pointer}
.sample-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.price{display:flex;flex-direction:column}.price .amt{font-size:2.6rem;font-weight:800}.price .amt small{font-size:1rem;color:var(--muted);font-weight:500}
.price ul{padding-left:20px;flex:1}.price.featured{border:2px solid var(--brand);box-shadow:0 18px 40px rgba(59,91,219,.15)}
.tag{font-size:.8rem;font-weight:800;color:var(--brand);text-transform:uppercase;letter-spacing:.05em}
details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin:12px 0}
summary{font-weight:700;cursor:pointer}details p{margin:.6em 0 0;color:var(--muted)}
.capture{background:linear-gradient(135deg,#3b5bdb,#7048e8);color:#fff;border-radius:24px;padding:48px;text-align:center}
.capture .lead{color:#e3e6ff;margin:0 auto 1em}.capture form{display:flex;gap:10px;max-width:480px;margin:0 auto;flex-wrap:wrap}
.capture input{flex:1;min-width:200px;padding:14px 18px;border-radius:999px;border:0;font-size:1rem}
.capture .btn{background:var(--brand2)}
footer{padding:40px 0;color:var(--muted);font-size:.9rem;border-top:1px solid var(--line)}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.soon{display:inline-block;font-size:.85rem;color:var(--muted);margin-top:22px}
/* form */
.form-wrap{max-width:680px;margin:40px auto 80px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:36px}
.progress{height:8px;background:var(--line);border-radius:99px;overflow:hidden;margin:10px 0 28px}.progress div{height:100%;background:var(--brand);width:0;transition:width .3s}
.step{display:none}.step.active{display:block}
label{display:block;font-weight:700;margin:18px 0 6px}.hint{font-weight:400;color:var(--muted);font-size:.9rem}
input[type=text],input[type=email],select,textarea{width:100%;padding:12px 14px;border:1.5px solid #ddd3c6;border-radius:10px;font:inherit;background:#fff}
textarea{min-height:100px;resize:vertical}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand)}
.checks{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px}
.checks label{font-weight:500;margin:0;border:1.5px solid #ddd3c6;border-radius:10px;padding:10px 12px;display:flex;gap:8px;align-items:center;cursor:pointer}
.err{color:#c92a2a;font-size:.88rem;margin-top:4px;min-height:1em}.invalid{border-color:#c92a2a!important}
.form-nav{display:flex;justify-content:space-between;margin-top:28px;gap:10px}
@media(max-width:820px){.hero .grid,.cards,.sample-grid,.problem ul{grid-template-columns:1fr}.nav ul{display:none}section{padding:56px 0}.capture{padding:32px 20px}.form-wrap{padding:24px;margin:20px 12px 60px}}
.pill{display:inline-block;background:var(--soft);color:var(--brand);font-size:.72rem;font-weight:700;padding:1px 8px;border-radius:999px;vertical-align:middle}
.ladder{display:grid;gap:16px;margin-top:34px}
.rung{display:grid;grid-template-columns:56px 1fr;gap:18px;background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.rung:nth-child(2){margin-left:4%}.rung:nth-child(3){margin-left:8%}.rung:nth-child(4){margin-left:12%}
.lvl{width:52px;height:52px;border-radius:14px;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800;font-size:1.4rem}
.rung h3{margin:0 0 .3em}.rung p{margin:.3em 0}.ex{color:var(--muted)}.safe{background:#fff4e6;border-radius:8px;padding:8px 12px;font-size:.95rem}
.radio label{font-weight:500;border:1.5px solid #ddd3c6;border-radius:10px;padding:10px 12px;display:flex;gap:10px;align-items:flex-start;margin:8px 0;cursor:pointer}
.radio input{margin-top:6px}
/* result */
.result{max-width:820px;margin:30px auto 80px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:40px}
.result h1{font-size:2rem}.result h2{font-size:1.45rem;margin-top:1.6em;border-top:1px solid var(--line);padding-top:1em}.result h3{margin-top:1.3em}
.result pre{margin:0;white-space:pre-wrap;font:inherit}.result .prompt{margin:8px 0 16px;padding-right:70px}
.result blockquote{margin:0 0 20px;background:#fff4e6;border:2px solid var(--brand2);border-radius:12px;padding:14px 18px}
.result ul.todo{list-style:none;padding-left:4px}.result ul.todo label{font-weight:400;margin:4px 0;display:flex;gap:8px}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;justify-content:space-between;align-items:center;max-width:820px;margin:30px auto 0;padding:0 20px}
.loading{text-align:center;padding:60px 20px}.spinner{width:44px;height:44px;border:4px solid var(--line);border-top-color:var(--brand);border-radius:50%;margin:0 auto 18px;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.demo-flag{background:var(--brand2);color:#fff;font-weight:800;padding:4px 12px;border-radius:999px;font-size:.85rem}
@media(max-width:820px){.rung{grid-template-columns:1fr;margin-left:0!important}.result{padding:22px;margin:16px 12px 60px}}
@media print{header.nav,.toolbar,.copy,footer,.noprint{display:none!important}body{background:#fff;font-size:12pt}.result{border:0;margin:0;padding:0;max-width:none}
.result .prompt{background:#f3f3f3;color:#000;border:1px solid #ccc;break-inside:avoid}.result h2{break-after:avoid}}
/* course dashboard + lessons */
.dash{max-width:900px;margin:30px auto 80px;padding:0 20px}
.dash-head{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:24px}
.ring{--p:0;flex:none;width:130px;height:130px;border-radius:50%;background:conic-gradient(var(--brand2) calc(var(--p)*1%),var(--line) 0);display:grid;place-content:center;text-align:center;position:relative}
.ring::before{content:"";position:absolute;inset:12px;border-radius:50%;background:var(--bg)}.ring b,.ring span{position:relative}.ring b{font-size:1.6rem}.ring span{font-size:.75rem;color:var(--muted)}
.levels{display:grid;gap:14px;margin-bottom:20px}
.lvcard{display:flex;align-items:center;gap:18px;background:#fff;border:1.5px solid var(--line);border-radius:var(--r);padding:18px 20px;text-decoration:none;color:inherit;transition:transform .15s}
.lvcard:hover{transform:translateY(-2px)}.lvtxt{flex:1;min-width:0}.lvtxt h3{margin:0}.lvtxt p{margin:2px 0 8px;color:var(--muted)}
.lvcard .bar{height:8px;background:var(--line);border-radius:99px;overflow:hidden}.lvcard .bar div{height:100%;background:var(--brand)}
.state{font-size:.8rem;font-weight:700;padding:4px 10px;border-radius:999px;background:var(--soft);color:var(--brand);white-space:nowrap}
.lvcard.current{border:2.5px solid var(--brand2)}.lvcard.current .state{background:var(--brand2);color:#fff}.lvcard.current .lvl{background:var(--brand2)}
.lvcard.passed .state{background:#2b8a3e;color:#fff}.lvcard.passed .lvl{background:#2b8a3e}.lvcard.review{opacity:.85}
.demo-banner{background:#fff4e6;border:2px solid var(--brand2);border-radius:12px;padding:10px 14px;margin-bottom:18px;font-size:.95rem}
.crumbs{display:flex;justify-content:space-between;margin-bottom:18px;font-size:.95rem;color:var(--muted)}
.why{background:var(--soft);border-radius:14px;padding:16px 20px;margin:18px 0}.why p{margin:.3em 0 0}
.concepts{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:12px}.concept{border:1px solid var(--line);border-radius:14px;padding:14px 16px}.concept h3{margin:0 0 .3em;font-size:1.05rem}.concept p{margin:0;color:var(--muted)}
.exrow{border-left:4px solid var(--brand);padding:4px 14px;margin:10px 0}.exrow p{margin:.2em 0 0}
.when{font-weight:700;margin:18px 0 4px}.steps li{margin:6px 0}
.safebox{background:#fff4e6;border-radius:14px;padding:14px 20px;margin:18px 0}.safebox ul{margin:.4em 0 0}
.checklist label{font-weight:500;display:flex;gap:10px;align-items:flex-start;border:1.5px solid var(--line);border-radius:10px;padding:10px 12px;margin:8px 0;cursor:pointer}.checklist input{margin-top:6px}
.passed{background:#ebfbee;border:2px solid #2b8a3e;border-radius:12px;padding:14px;font-weight:700;margin-top:12px}
.lesson-nav{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-top:30px}
@media(max-width:820px){.dash-head{flex-direction:column;align-items:flex-start}.lvcard{margin-left:0!important;flex-wrap:wrap}}
/* preview */
.pv-ladder{display:grid;gap:10px;margin:22px 0}.pv-rung{display:flex;align-items:center;gap:14px;border:1.5px solid var(--line);border-radius:14px;padding:12px 16px;color:var(--muted)}
.pv-rung b{width:40px;height:40px;border-radius:12px;background:#d9cfc2;color:#fff;display:grid;place-items:center}.pv-rung em{margin-left:auto;font-style:normal;font-weight:800;color:var(--brand2)}
.pv-rung.here{border:2.5px solid var(--brand2);color:var(--ink);font-weight:700}.pv-rung.here b,.pv-rung.below b{background:var(--brand2)}
.unlock{margin-top:30px}.arch label{font-size:1.05rem}
/* landing hero video + compare */
.hero-v{padding:56px 0 40px;text-align:center}.hero-v h1{max-width:900px;margin:0 auto .4em}.hero-v .lead{margin:0 auto}.hero-v .ctas{justify-content:center}
.vid{position:relative;max-width:980px;margin:28px auto 0;border-radius:22px;overflow:hidden;box-shadow:0 30px 70px rgba(31,36,51,.18);background:#000;aspect-ratio:16/9}
.vid video{width:100%;height:100%;display:block;object-fit:cover}.vid .snd{position:absolute;left:16px;bottom:16px;background:#fff;color:var(--ink);border:0;border-radius:999px;padding:10px 18px;font-weight:800;cursor:pointer;box-shadow:0 6px 18px rgba(0,0,0,.25)}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:30px}.compare .col{border-radius:18px;padding:24px;border:1.5px solid var(--line);background:#fff}
.compare .bad{background:#f6f4f1}.compare .good{border:2.5px solid var(--brand)}.compare ul{list-style:none;padding:0;margin:0}.compare li{padding:10px 0;border-bottom:1px dashed var(--line)}
.soonbox{border:2px dashed var(--line);border-radius:18px;padding:30px;text-align:center;color:var(--muted);max-width:760px;margin:24px auto 0}
@media(max-width:820px){.compare{grid-template-columns:1fr}}
/* prompt gym */
.gym{border:1.5px solid var(--line);border-radius:14px;padding:16px 18px;margin:14px 0}.gym.done{border-color:#2b8a3e;background:#f6fff8}.gym h3{margin:0 0 .3em}
.gym textarea{min-height:110px;margin:6px 0 10px}.gym-prog{font-weight:800;color:var(--brand2)}
.gym-score{font-size:1.1rem;margin-top:12px}.gym-score b{font-size:1.6rem}.gym-score.ok b{color:#2b8a3e}
.gym-bars{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}.gym-bars span{font-size:.82rem;font-weight:700;padding:3px 10px;border-radius:999px;background:#ffe3e3}.gym-bars .s1{background:#fff3bf}.gym-bars .s2{background:#d3f9d8}
.gym-hint{background:var(--soft);border-radius:10px;padding:10px 14px}.out{background:#f8f6f2;border-radius:10px;padding:10px 14px;font-size:.92rem;white-space:pre-wrap}
.gym-cmp{display:grid;grid-template-columns:1fr 1fr;gap:14px}.gym-cmp h4{margin:.6em 0 .3em}.lvcard.locked{opacity:.6}
@media(max-width:820px){.gym-cmp{grid-template-columns:1fr}}