:root{
  --navy:#0A2540; --navy-2:#0e2f50; --navy-deep:#061a30;
  --gold:#F5B301; --gold-2:#ffc62e;
  --light:#F4F6F8; --slate:#9fb1c4; --card:#0f2c4d;
  --line:rgba(255,255,255,.08); --green:#2ee6a8; --red:#ff5d6c;
  --mono:'JetBrains Mono',ui-monospace,monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:Inter,system-ui,sans-serif;background:var(--navy);color:var(--light);line-height:1.7;-webkit-font-smoothing:antialiased}
h1,h2,h3,.logo{font-family:Montserrat,sans-serif;font-weight:800;letter-spacing:-.02em;line-height:1.2}
a{color:inherit;text-decoration:none}
.wrap{max-width:1140px;margin:0 auto;padding:0 24px}
.narrow{max-width:780px}
.gold{color:var(--gold)}
.mono{font-family:var(--mono)}

header.site{position:sticky;top:0;z-index:50;background:rgba(6,26,48,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-size:1.05rem;letter-spacing:.06em}
.logo small{display:block;font-family:var(--mono);font-weight:400;font-size:.55rem;letter-spacing:.32em;color:var(--slate)}
.nav-links{display:flex;gap:22px;font-size:.88rem;font-weight:500;align-items:center}
.nav-links a:hover{color:var(--gold)}
.btn{display:inline-block;padding:13px 24px;border-radius:8px;font-weight:700;font-family:Montserrat,sans-serif;transition:.2s;cursor:pointer;border:none;font-size:.92rem}
.btn-gold{background:var(--gold);color:var(--navy)}
.btn-gold:hover{background:var(--gold-2);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--light);border:1.5px solid rgba(255,255,255,.3)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold)}

.kicker{font-family:var(--mono);font-size:.75rem;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);margin-bottom:12px}
.lead{color:var(--slate);font-size:1.05rem;max-width:640px}

/* ---- Hub ---- */
.hub-hero{padding:76px 0 48px;background:var(--navy-deep);border-bottom:1px solid var(--line)}
.hub-hero h1{font-size:clamp(1.9rem,4.5vw,2.9rem);margin-bottom:14px;max-width:720px}
.track{padding:56px 0}
.track+.track{border-top:1px solid var(--line)}
.track-head{display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:8px;margin-bottom:8px}
.track h2{font-size:1.5rem}
.track .tcount{font-family:var(--mono);font-size:.72rem;color:var(--slate);letter-spacing:.1em}
.track p.tdesc{color:var(--slate);max-width:640px;margin-bottom:28px;font-size:.95rem}
.lesson-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.lesson{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:24px 22px;display:flex;flex-direction:column;transition:.22s;position:relative}
.lesson:hover{border-color:rgba(245,179,1,.5);transform:translateY(-3px)}
.lesson .num{font-family:var(--mono);font-size:.68rem;color:rgba(245,179,1,.65);letter-spacing:.14em;margin-bottom:10px}
.lesson h3{font-size:1.02rem;margin-bottom:8px}
.lesson p{color:var(--slate);font-size:.86rem;flex:1}
.lesson .meta{margin-top:16px;font-family:var(--mono);font-size:.66rem;color:var(--slate);letter-spacing:.08em;display:flex;justify-content:space-between}
.lesson .meta .go{color:var(--gold)}
.lesson.start::after{content:'START HERE';position:absolute;top:-10px;left:18px;background:var(--green);color:#06301b;font-family:var(--mono);font-size:.6rem;font-weight:700;letter-spacing:.1em;padding:3px 9px;border-radius:5px}
.lesson.soon{opacity:.55;pointer-events:none}
.lesson.soon .meta .go{color:var(--slate)}
.track-cta{margin-top:26px;background:linear-gradient(90deg,rgba(245,179,1,.08),transparent);border:1px solid rgba(245,179,1,.25);border-radius:12px;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px}
.track-cta p{font-size:.9rem;color:var(--slate)}
.track-cta b{color:var(--light)}

/* ---- Lesson article ---- */
.crumb{padding:26px 0 0;font-family:var(--mono);font-size:.72rem;color:var(--slate);letter-spacing:.08em}
.crumb a{color:var(--gold)}
article{padding:26px 0 60px}
.ltag{display:inline-block;font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;padding:4px 10px;border-radius:5px;margin-bottom:16px}
.ltag.beg{background:rgba(46,230,168,.12);color:var(--green);border:1px solid rgba(46,230,168,.35)}
.ltag.int{background:rgba(245,179,1,.12);color:var(--gold);border:1px solid rgba(245,179,1,.35)}
.ltag.adv{background:rgba(255,93,108,.12);color:var(--red);border:1px solid rgba(255,93,108,.35)}
article h1{font-size:clamp(1.7rem,4vw,2.4rem);margin-bottom:10px}
.ameta{font-family:var(--mono);font-size:.72rem;color:var(--slate);letter-spacing:.1em;margin-bottom:34px;padding-bottom:20px;border-bottom:1px solid var(--line)}
article h2{font-size:1.3rem;margin:38px 0 12px;color:var(--gold)}
article p{color:#c6d2e0;margin-bottom:16px;font-size:1rem}
article ul,article ol{margin:0 0 16px 22px;color:#c6d2e0}
article li{margin-bottom:8px}
article b,article strong{color:var(--light)}
.callout{background:var(--card);border-left:3px solid var(--gold);border-radius:0 10px 10px 0;padding:18px 22px;margin:26px 0}
.callout h3{font-size:.8rem;font-family:var(--mono);letter-spacing:.14em;color:var(--gold);margin-bottom:8px}
.callout p,.callout li{font-size:.92rem;margin-bottom:6px}
.callout ul{margin-left:20px}
.exbox{background:var(--navy-deep);border:1px solid var(--line);border-radius:10px;padding:18px 22px;margin:26px 0;font-family:var(--mono);font-size:.85rem;line-height:2}
.exbox .g{color:var(--green)} .exbox .r{color:var(--red)} .exbox .d{color:var(--slate)}
.fig{background:var(--navy-deep);border:1px solid var(--line);border-radius:10px;padding:20px 18px 14px;margin:28px 0}
.fig svg{width:100%;height:auto;display:block}
.fig img{width:100%;height:auto;display:block;border-radius:7px;border:1px solid rgba(255,255,255,.06)}
.fig figcaption{font-family:var(--mono);font-size:.68rem;color:var(--slate);letter-spacing:.1em;margin-top:12px;text-align:center;text-transform:uppercase}
.pn{display:flex;justify-content:space-between;gap:14px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line);flex-wrap:wrap}
.pn a{font-family:var(--mono);font-size:.78rem;color:var(--gold);letter-spacing:.06em}
.pn a:hover{text-decoration:underline}
.lesson-cta{background:var(--card);border:1px solid rgba(245,179,1,.3);border-radius:14px;padding:28px;margin-top:40px;text-align:center}
.lesson-cta h3{margin-bottom:8px}
.lesson-cta p{color:var(--slate);font-size:.92rem;margin-bottom:18px}

/* ---- Position-size calculator ---- */
.calc{background:var(--navy-deep);border:1px solid rgba(245,179,1,.4);border-radius:14px;padding:24px 22px;margin:30px 0}
.calc h3{font-family:var(--mono);font-size:.78rem;letter-spacing:.16em;color:var(--gold);margin-bottom:4px}
.calc .calc-sub{color:var(--slate);font-size:.84rem;margin-bottom:18px}
.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.calc-grid label{display:block;font-family:var(--mono);font-size:.64rem;letter-spacing:.12em;color:var(--slate);margin-bottom:6px}
.calc-grid input{width:100%;background:var(--card);border:1px solid rgba(255,255,255,.18);border-radius:9px;color:var(--light);font-family:var(--mono);font-size:1.05rem;padding:11px 13px;outline:none}
.calc-grid input:focus{border-color:var(--gold)}
.riskchips{display:flex;gap:8px;margin-top:8px}
.riskchips button{background:var(--card);border:1px solid rgba(255,255,255,.18);border-radius:7px;color:var(--slate);font-family:var(--mono);font-size:.72rem;padding:5px 12px;cursor:pointer}
.riskchips button.on{border-color:var(--gold);color:var(--gold)}
.calc-out{margin-top:20px;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.calc-out div{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px;text-align:center}
.calc-out b{font-family:var(--mono);font-size:1.25rem;color:var(--light);display:block}
.calc-out .big b{color:var(--green);font-size:1.6rem}
.calc-out span{font-family:var(--mono);font-size:.6rem;letter-spacing:.12em;color:var(--slate)}
.calc-note{margin-top:14px;font-size:.78rem;color:var(--slate);font-family:var(--mono)}
.calc-note.warn{color:var(--red)}
@media(max-width:600px){.calc-grid,.calc-out{grid-template-columns:1fr 1fr}}

/* ---- Quiz ---- */
#quiz{margin-top:44px;padding-top:10px;border-top:1px solid var(--line)}
.quiz-kicker{font-family:var(--mono);font-size:.72rem;letter-spacing:.18em;color:var(--gold);display:block;margin:16px 0 8px}
.quiz-q{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px 22px;margin-top:16px}
.quiz-question{color:var(--light);font-weight:600;margin-bottom:14px}
.quiz-opts{display:grid;gap:10px}
.quiz-opts button{text-align:left;background:var(--navy-deep);border:1px solid rgba(255,255,255,.14);border-radius:9px;color:#c6d2e0;padding:12px 16px;font-size:.92rem;font-family:Inter,sans-serif;cursor:pointer;transition:.15s}
.quiz-opts button:hover{border-color:var(--gold)}
.quiz-q.locked .quiz-opts button{cursor:default;opacity:.75}
.quiz-opts button.right{border-color:var(--green);color:var(--green);opacity:1}
.quiz-opts button.wrong{border-color:var(--red);color:var(--red);opacity:1}
.quiz-fb{margin-top:12px;font-size:.86rem}
.quiz-fb.ok{color:var(--green)} .quiz-fb.no{color:var(--slate)}
.quiz-result{margin-top:18px;background:rgba(46,230,168,.08);border:1px solid rgba(46,230,168,.3);border-radius:10px;padding:16px 20px;color:var(--light);font-size:.95rem}

/* ---- School bands & courses ---- */
.school-band{background:var(--navy-deep);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 0 22px;margin-top:10px}
.school-band h2{font-size:1.25rem;letter-spacing:.04em}
.school-band p{color:var(--slate);font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;margin-top:6px}
.course{padding:40px 0}
.cnum{display:inline-block;font-family:var(--mono);font-size:.62rem;letter-spacing:.16em;color:var(--navy);background:var(--gold);border-radius:6px;padding:4px 10px;vertical-align:middle;margin-right:10px}

/* ---- Journey map ---- */
.journey{background:var(--navy-deep);border-bottom:1px solid var(--line);padding:34px 0 40px}
.journey svg{width:100%;height:auto;display:block}
.journey a{cursor:pointer}
.journey a circle.node{fill:#0f2c4d;stroke-width:2.5;transition:.2s}
.journey a:hover circle.node{fill:#173a63}
.journey a.done circle.node{fill:#123c2f;stroke:#2ee6a8}
.journey a.done text.nnum{fill:#2ee6a8}
.jlegend{font-family:var(--mono);font-size:.66rem;color:var(--slate);letter-spacing:.1em;text-align:center;margin-top:12px}
.jlegend b{color:var(--green)}

/* ---- Card glyphs ---- */
.lesson{padding-right:64px}
.lesson .glyph{position:absolute;top:20px;right:18px;width:34px;height:34px;opacity:.9}

/* ---- Scroll reveal ---- */
.rev{opacity:0;transform:translateY(24px);transition:opacity .65s ease,transform .65s ease}
.rev.in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){.rev{opacity:1;transform:none;transition:none}}

/* ---- Progress on hub ---- */
.lesson.done{border-color:rgba(46,230,168,.5)}
.lesson.done .num::after{content:'  ✓ DONE';color:var(--green)}
.track-progress{font-family:var(--mono);font-size:.7rem;color:var(--slate);letter-spacing:.1em;margin:-4px 0 20px}
.track-progress b{color:var(--green)}
.pbar{display:inline-block;width:120px;height:6px;background:rgba(255,255,255,.08);border-radius:4px;vertical-align:middle;margin-right:10px;overflow:hidden}
.pbar i{display:block;height:100%;background:var(--green);border-radius:4px;transition:width .4s}

/* ---- Certificate ---- */
.certbox{background:linear-gradient(160deg,rgba(245,179,1,.09),var(--navy-deep));border:1px solid rgba(245,179,1,.45);border-radius:16px;padding:30px 26px;text-align:center}
.certbox h2{margin-bottom:10px}
.certbox .lockline{font-family:var(--mono);font-size:.78rem;color:var(--slate);letter-spacing:.1em;margin:14px 0}
.certbox .lockline b{color:var(--gold)}
.certbar{max-width:420px;height:10px;background:rgba(255,255,255,.08);border-radius:6px;margin:14px auto;overflow:hidden}
.certbar i{display:block;height:100%;background:linear-gradient(90deg,var(--green),var(--gold));border-radius:6px;transition:width .5s}
.certname{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin:18px 0}
.certname input{background:var(--card);border:1px solid rgba(255,255,255,.2);border-radius:9px;color:var(--light);font-family:Inter,sans-serif;font-size:1rem;padding:12px 16px;width:min(320px,80vw);outline:none;text-align:center}
.certname input:focus{border-color:var(--gold)}
.certbtns{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.certbtns .btn{padding:13px 22px;font-size:.92rem}
.btn-gold2{background:var(--gold);color:var(--navy);border:none;font-family:Montserrat,sans-serif;font-weight:800;border-radius:10px;cursor:pointer}
.btn-wa2{background:#25D366;color:#06301b;font-family:Montserrat,sans-serif;font-weight:800;border-radius:10px;border:none;cursor:pointer}
#certCanvas{width:100%;max-width:640px;height:auto;border-radius:10px;border:1px solid rgba(245,179,1,.4);margin:18px auto 6px;display:none}
#certCanvas.show{display:block}

/* ---- Glossary ---- */
.gloss-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:30px}
.gloss{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px 20px}
.gloss dt{font-family:var(--mono);color:var(--gold);font-size:.9rem;letter-spacing:.04em;margin-bottom:6px;font-weight:700}
.gloss dd{color:var(--slate);font-size:.88rem;margin:0}
.gloss-nav{font-family:var(--mono);font-size:.8rem;letter-spacing:.14em;margin-top:18px}
.gloss-nav a{color:var(--gold);margin-right:10px}
@media(max-width:700px){.gloss-grid{grid-template-columns:1fr}}

footer.site{background:#04121f;border-top:1px solid var(--line);padding:26px 0;font-size:.78rem;color:var(--slate)}
footer.site .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
footer.site a:hover{color:var(--gold)}
.discl-mini{background:var(--navy-deep);border-top:1px solid var(--line);padding:22px 0;font-size:.72rem;color:var(--slate)}

@media(max-width:860px){
  .lesson-grid{grid-template-columns:1fr}
  .nav-links{gap:14px;font-size:.8rem}
  .nav-links .hidesm{display:none}
}