body{background:#0a0b10;color:#e8eaf2;min-height:100vh;overflow-x:hidden}
/* -- Site footer -- */
.footer-socials{display:flex;gap:4px;flex-wrap:wrap;justify-content:center;}
.footer-socials a{font-size:0.82rem;font-weight:600;color:rgba(240,234,214,0.55);padding:4px 9px;border-radius:6px;text-decoration:none;transition:color 0.15s,background 0.15s;}
.footer-socials a:hover{color:#F0EAD6;background:rgba(255,255,255,0.07);}


  :root {
  --bg:#04090f; --bg2:#080f1a; --bg3:#0d1624;
  --border:rgba(255,255,255,.07);
  --text:#cce4f7; --muted:rgba(204,228,247,.4);
  --blue:#38bdf8; --blue-lt:#7dd3fc; --blue-dk:#0369a1;
  --wave:#0ea5e9; --water:#0c4a6e; --water-lt:#075985;
  --sand:#c8a96e; --sand-lt:#e8c98e;
  --green:#22c55e; --green-lt:#4ade80;
  --red:#ef4444; --red-lt:#fca5a5;
  --gold:#f5c842; --purple:#a78bfa;
}

/* HEADER */
.btn-back{font-size:.8rem;font-weight:700;color:var(--muted);padding:6px 14px;border-radius:8px;border:1px solid var(--border);transition:color .15s,border-color .15s}
.btn-back:hover{color:var(--text);border-color:rgba(255,255,255,.2)}
@media(max-width:860px){.btn-back{display:none}.nav-toggle{display:block!important}}

/* HERO */
.hero{padding:44px 24px 36px;border-bottom:1px solid var(--border);position:relative;overflow:hidden}
.hero-dots{position:absolute;inset:0;background-image:radial-gradient(rgba(56,189,248,.06) 1px,transparent 1px);background-size:26px 26px;mask-image:radial-gradient(ellipse 80% 100% at 50% 0%,black,transparent)}
@media(max-width:700px){.hero-inner{grid-template-columns:1fr}}
.hero-tag{font-family:'JetBrains Mono',monospace;font-size:.63rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--blue-lt);margin-bottom:10px}
.hero-title{font-family:'Bebas Neue',cursive;font-size:clamp(2.2rem,6vw,3.8rem);line-height:.95;letter-spacing:.03em;color:white;margin-bottom:12px}
.hero-title .hl{color:var(--blue)}
.pill{font-family:'JetBrains Mono',monospace;font-size:.6rem;padding:4px 10px;border-radius:5px;background:rgba(255,255,255,.05);border:1px solid var(--border);letter-spacing:.05em;text-transform:uppercase}
.pill.b{border-color:rgba(56,189,248,.3);color:var(--blue-lt);background:rgba(56,189,248,.07)}
.hero-cta{background:var(--blue);color:#04090f;font-family:'Bebas Neue',cursive;font-size:1.05rem;letter-spacing:.1em;padding:11px 26px;border-radius:10px;box-shadow:0 4px 0 var(--blue-dk);transition:transform .12s,filter .15s;display:inline-block;margin-top:16px}
.hero-cta:hover{filter:brightness(1.1);transform:translateY(-2px)}
.hero-preview{background:var(--bg3);border:1px solid var(--border);border-radius:14px;padding:16px 18px;min-width:200px}
.hero-preview-title{font-family:'JetBrains Mono',monospace;font-size:.58rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--blue-lt);margin-bottom:10px}
.hero-stat{display:flex;justify-content:space-between;align-items:center;padding:6px 0;border-bottom:1px solid var(--border);font-size:.8rem}
.hero-stat:last-child{border-bottom:none}
.hero-stat-label{color:var(--muted);font-size:.72rem}
.hero-stat-val{font-family:'Bebas Neue',cursive;font-size:.95rem;letter-spacing:.05em;color:var(--blue-lt)}

/* MAIN LAYOUT */
.main-layout{display:grid;grid-template-columns:1fr 400px;max-width:1400px;margin:0 auto;min-height:calc(100vh - 60px)}
@media(max-width:960px){.main-layout{grid-template-columns:1fr}}

/* STEPS */
.steps-panel{border-right:1px solid var(--border)}
.steps-tabs{display:flex;overflow-x:auto;scrollbar-width:none;border-bottom:1px solid var(--border);background:var(--bg2)}
.steps-tabs::-webkit-scrollbar{display:none}
.tab-btn{flex-shrink:0;padding:12px 11px;font-family:'JetBrains Mono',monospace;font-size:.58rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);background:none;border:none;cursor:pointer;border-bottom:2px solid transparent;transition:color .15s,border-color .15s;white-space:nowrap}
.tab-btn:hover{color:var(--text)}
.tab-btn.active{color:var(--blue-lt);border-bottom-color:var(--blue)}
.tab-btn.done::before{content:"✅ ";color:var(--green-lt)}
@media(max-width:960px){.step-body{max-height:none;overflow-y:visible}}
@media(max-width:680px){.step-body{padding:18px 14px}}
.step-num{font-family:'JetBrains Mono',monospace;font-size:.6rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--blue-lt);margin-bottom:5px}
.step-intro{font-size:.88rem;color:var(--muted);line-height:1.75;margin-bottom:18px}
.step-intro strong{color:var(--text)}

/* BOXES */
.box{border-radius:10px;padding:10px 14px;margin:10px 0;font-size:.8rem;line-height:1.6;display:flex;gap:9px;align-items:flex-start}
.box-concept{background:rgba(56,189,248,.06);border:1px solid rgba(56,189,248,.18);color:rgba(204,228,247,.75)}
.box-concept::before{content:"💡";flex-shrink:0}
.box-tip{background:rgba(34,197,94,.06);border:1px solid rgba(34,197,94,.18);color:rgba(204,228,247,.75)}
.box-tip::before{content:"✅";flex-shrink:0}
.box-warn{background:rgba(239,68,68,.07);border:1px solid rgba(239,68,68,.2);color:rgba(204,228,247,.8)}
.box-warn::before{content:"⚠️";flex-shrink:0}
.box-rescue{background:rgba(167,139,250,.07);border:1px solid rgba(167,139,250,.22);color:rgba(204,228,247,.8)}
.box-rescue::before{content:"🔧";flex-shrink:0}

/* CODE */
.code-area{margin:14px 0}
.code-area-label{font-family:'JetBrains Mono',monospace;font-size:.58rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:5px;display:flex;align-items:center;justify-content:space-between}
.live-badge{color:var(--blue-lt);font-size:.56rem;padding:2px 7px;border-radius:4px;background:rgba(56,189,248,.1);border:1px solid rgba(56,189,248,.2)}
.code-block{background:#02070e;border:1px solid rgba(56,189,248,.1);border-radius:11px;overflow:hidden}
.code-block-header{padding:8px 14px;border-bottom:1px solid rgba(255,255,255,.05);display:flex;align-items:center;gap:6px;background:rgba(255,255,255,.02)}
.dot{width:9px;height:9px;border-radius:50%;flex-shrink:0}
.code-fname{font-family:'JetBrains Mono',monospace;font-size:.64rem;color:var(--muted);margin-left:4px}
.code-pre{padding:14px 16px;font-family:'JetBrains Mono',monospace;font-size:.72rem;line-height:1.8;overflow-x:auto;white-space:pre}

/* Syntax */
.ck{color:#38bdf8}.cs{color:#86efac}.cn{color:#fbbf24}.cc{color:#3a5a3a}.cf{color:#c084fc}.cg{color:#4ade80}.co{color:#fb923c}.cy{color:#f5c842}.cr{color:#f87171}

/* BLANKS */
.blank{display:inline-block;font-family:'JetBrains Mono',monospace;font-size:.72rem;font-weight:700;color:#04090f;background:var(--blue);border:none;border-radius:5px;padding:2px 7px;width:var(--w,80px);text-align:center;outline:none;vertical-align:middle;transition:background .2s,box-shadow .2s}
.blank:focus{background:var(--blue-lt);box-shadow:0 0 0 3px rgba(56,189,248,.35)}
.blank-select{font-family:'JetBrains Mono',monospace;font-size:.72rem;font-weight:700;color:#04090f;background:var(--blue);border:none;border-radius:5px;padding:2px 8px;vertical-align:middle;outline:none;cursor:pointer;transition:background .2s}
.blank-select:focus{background:var(--blue-lt)}

/* RUN BTN */
.run-btn{width:100%;margin-top:12px;padding:13px;background:var(--blue);color:#04090f;font-family:'Bebas Neue',cursive;font-size:1rem;letter-spacing:.1em;border:none;border-radius:10px;cursor:pointer;box-shadow:0 4px 0 var(--blue-dk);transition:transform .1s,filter .15s;display:flex;align-items:center;justify-content:center;gap:7px}
.run-btn:hover{filter:brightness(1.1);transform:translateY(-1px)}
.run-btn:active{transform:translateY(2px);box-shadow:0 2px 0 var(--blue-dk)}

/* NAV */
.step-nav{display:flex;gap:10px;margin-top:18px;padding-top:14px;border-top:1px solid var(--border)}
.btn-prev,.btn-next{flex:1;padding:11px;border-radius:8px;font-family:'Nunito',sans-serif;font-size:.84rem;font-weight:800;cursor:pointer;border:none;transition:background .15s}
.btn-prev{background:rgba(255,255,255,.05);color:var(--muted)}
.btn-prev:hover:not(:disabled){background:rgba(255,255,255,.1);color:var(--text)}
.btn-next{background:rgba(56,189,248,.11);color:var(--blue-lt);border:1px solid rgba(56,189,248,.2)}
.btn-next:hover:not(:disabled){background:rgba(56,189,248,.2)}
.btn-prev:disabled,.btn-next:disabled{opacity:.3;cursor:default}

/* SIM PANEL */
.game-panel{background:var(--bg);display:flex;flex-direction:column;position:sticky;top:60px;height:calc(100vh - 60px)}
@media(max-width:960px){.game-panel{position:static;height:auto;border-top:1px solid var(--border)}}
.game-top{padding:11px 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-shrink:0}
.game-top-title{font-family:'JetBrains Mono',monospace;font-size:.62rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.game-live{display:flex;align-items:center;gap:6px;font-family:'JetBrains Mono',monospace;font-size:.6rem;color:var(--blue-lt)}
.live-dot{width:6px;height:6px;border-radius:50%;background:var(--blue);animation:blink 2s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.2}}
.sim-wrap{flex:1;position:relative;overflow:hidden;padding:10px}
canvas{width:100%;border-radius:10px;box-shadow:0 0 0 1px rgba(255,255,255,.06),0 8px 40px rgba(0,0,0,.8);display:block}

/* LOG */
.event-log{background:var(--bg2);border-top:1px solid var(--border);padding:8px 14px;font-family:'JetBrains Mono',monospace;font-size:.62rem;height:80px;overflow-y:auto;display:flex;flex-direction:column;gap:3px;flex-shrink:0}
.log-line{color:var(--muted);transition:color .3s}
.log-line.rescue{color:var(--green-lt)}
.log-line.drown{color:var(--red-lt)}
.log-line.warn{color:var(--gold)}
.log-line.info{color:var(--blue-lt)}

/* PROGRESS */
.progress-strip{background:var(--bg2);border-top:1px solid var(--border);padding:9px 20px;display:flex;align-items:center;gap:14px;max-width:1400px;margin:0 auto;width:100%;position:sticky;bottom:0;z-index:50}
.prog-label{font-family:'JetBrains Mono',monospace;font-size:.58rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--blue-lt);flex-shrink:0}
.prog-track{flex:1;height:4px;background:rgba(255,255,255,.07);border-radius:999px;overflow:hidden}
.prog-fill{height:100%;background:linear-gradient(90deg,var(--blue),var(--purple));border-radius:999px;transition:width .4s ease}
.prog-dots{display:flex;gap:5px;flex-shrink:0}
.prog-dot{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.1);transition:all .3s}
.prog-dot.done{background:var(--green)}.prog-dot.active{background:var(--blue);transform:scale(1.3)}

/* STATS STRIP */
.stats-strip{display:flex;gap:0;border-top:1px solid var(--border);flex-shrink:0}
.stat-box{flex:1;padding:8px 12px;border-right:1px solid var(--border);text-align:center}
.stat-box:last-child{border-right:none}
.stat-val{font-family:'Bebas Neue',cursive;font-size:1.3rem;letter-spacing:.05em}
.stat-lbl{font-family:'JetBrains Mono',monospace;font-size:.52rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-top:1px}

/* MORE */
.more-section{padding:52px 24px;max-width:1400px;margin:0 auto}
.more-title{font-family:'Bebas Neue',cursive;font-size:1.9rem;letter-spacing:.04em;color:white;margin-bottom:20px}
.more-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px}
.more-card{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:17px 19px;display:flex;flex-direction:column;gap:7px;transition:border-color .2s,transform .2s}
.more-card:hover{border-color:rgba(255,255,255,.15);transform:translateY(-3px)}
.more-icon{font-size:1.5rem}
.more-tag{font-family:'JetBrains Mono',monospace;font-size:.58rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.more-name{font-family:'Bebas Neue',cursive;font-size:1rem;letter-spacing:.04em;color:white}
.more-cta{font-size:.76rem;font-weight:700;margin-top:auto}
footer{background:var(--bg2);border-top:1px solid var(--border);padding:22px;text-align:center;color:var(--muted);font-size:.76rem}
footer a{color:var(--muted)}footer a:hover{color:var(--text)}


.progress-track2{height:8px;background:rgba(255,255,255,.07);border-radius:4px;overflow:hidden}
.progress-fill2{height:100%;background:linear-gradient(90deg,var(--blue),var(--purple));border-radius:4px;transition:width .5s ease;width:0%}

.step-header2{padding:20px 24px 16px;display:flex;align-items:flex-start;gap:16px;cursor:pointer;user-select:none}
.step-num2{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-family:'Bebas Neue',cursive;font-size:1.3rem;flex-shrink:0;transition:all .2s}
.sn-blue{background:rgba(56,189,248,.18);color:var(--blue-lt);border:2px solid rgba(56,189,248,.3)}
.sn-gold{background:rgba(245,200,66,.15);color:var(--gold);border:2px solid rgba(245,200,66,.25)}
.sn-wave{background:rgba(14,165,233,.15);color:var(--wave);border:2px solid rgba(14,165,233,.25)}
.step-emoji2{font-size:1.4rem;margin-bottom:2px}
.step-title2{font-family:'Bebas Neue',cursive;font-size:1.25rem;color:white;line-height:1.2}
.step-blurb2{font-size:.82rem;color:var(--muted);margin-top:3px;line-height:1.5}
.step-body2{padding:0 24px 24px;display:none}

.quiz-title2{font-family:'Bebas Neue',cursive;font-size:1.05rem;color:#fff}

/* -- CODE CHALLENGE -- */

/* -- CONCEPT FILL -- */

/* -- TRUE/FALSE -- */

/* -- ORDER CHALLENGE -- */

/* -- PREDICT CHALLENGE -- */

/* -- FINISH BANNER -- */
.skip-link{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}.skip-link:focus{left:50%;transform:translateX(-50%);top:8px;width:auto;height:auto;padding:10px 20px;background:#BC4749;color:white;font-weight:700;font-size:.9rem;border-radius:8px;z-index:9999;text-decoration:none;white-space:nowrap}
.dl-section{max-width:1400px;margin:0 auto;padding:48px 24px 0}
.dl-title{font-family:'Bebas Neue',cursive;font-size:1.9rem;letter-spacing:.04em;color:white;margin-bottom:6px}
.dl-sub{font-size:.85rem;color:var(--muted);margin-bottom:24px;line-height:1.6}
.dl-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.dl-card{background:var(--bg3);border:1px solid var(--border);border-radius:14px;overflow:hidden;transition:border-color .2s,transform .2s}
.dl-card:hover{border-color:rgba(56,189,248,.3);transform:translateY(-2px)}
.dl-card-head{padding:16px 20px 14px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px}
.dl-icon{font-size:1.6rem;flex-shrink:0}
.dl-card-name{font-family:'Bebas Neue',cursive;font-size:1.1rem;letter-spacing:.04em;color:white}
.dl-card-version{font-family:'JetBrains Mono',monospace;font-size:.6rem;color:var(--blue-lt);background:rgba(56,189,248,.1);border:1px solid rgba(56,189,248,.2);padding:2px 8px;border-radius:4px;margin-left:auto;flex-shrink:0}
.dl-card-body{padding:14px 20px}
.dl-card-desc{font-size:.8rem;color:var(--muted);line-height:1.65;margin-bottom:14px}
.dl-features{display:flex;flex-direction:column;gap:5px;margin-bottom:16px}
.dl-feature{font-size:.75rem;color:rgba(204,228,247,.65);display:flex;align-items:center;gap:7px}
.dl-feature::before{content:"?";color:var(--green-lt);font-weight:700;flex-shrink:0}
.dl-code-preview{background:#02070e;border:1px solid rgba(56,189,248,.1);border-radius:8px;padding:10px 14px;font-family:'JetBrains Mono',monospace;font-size:.62rem;line-height:1.7;color:rgba(204,228,247,.6);margin-bottom:14px;overflow-x:auto;white-space:pre}
.dl-actions{display:flex;gap:8px}
.dl-btn{flex:1;padding:10px;border-radius:8px;font-family:'Bebas Neue',cursive;font-size:.9rem;letter-spacing:.08em;text-align:center;cursor:pointer;border:none;transition:filter .15s,transform .1s;display:block;text-decoration:none}
.dl-btn:hover{filter:brightness(1.1);transform:translateY(-1px)}
.dl-btn-primary{background:var(--blue);color:#04090f;box-shadow:0 3px 0 var(--blue-dk)}
.dl-btn-secondary{background:rgba(255,255,255,.06);color:var(--muted);border:1px solid var(--border)}
.dl-btn-secondary:hover{background:rgba(255,255,255,.1);color:var(--text)}
.dl-install{background:rgba(56,189,248,.06);border:1px solid rgba(56,189,248,.15);border-radius:10px;padding:14px 18px;margin-top:20px}
.dl-install-title{font-family:'JetBrains Mono',monospace;font-size:.62rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--blue-lt);margin-bottom:10px}
.dl-install-steps{display:flex;flex-direction:column;gap:7px}
.dl-install-step{font-size:.78rem;color:var(--muted);display:flex;gap:10px;align-items:flex-start;line-height:1.5}
.dl-install-num{font-family:'Bebas Neue',cursive;font-size:.9rem;color:var(--blue-lt);flex-shrink:0;width:16px}
.dl-install-step code{font-family:'JetBrains Mono',monospace;font-size:.68rem;color:var(--blue-lt);background:rgba(56,189,248,.1);padding:1px 5px;border-radius:3px}
.reveal{opacity:1!important;transform:none!important}