:root{--navy:#0d1b3d;--navy2:#162a5c;--navy3:#21397a;--gold:#f5c542;--gold2:#e0a91f;--cream:#fff8e7;--ink:#1b1b2f;--teal:#3fc1b0;--coral:#ff7a6b;--r:22px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:Rubik,system-ui,"Segoe UI",Arial,sans-serif;color:var(--cream);background:radial-gradient(1200px 600px at 80% -10%,#2b4aa0 0,transparent 60%),radial-gradient(900px 500px at -10% 110%,#3a2a6e 0,transparent 55%),var(--navy);min-height:100vh;line-height:1.55;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px;border-radius:10px}
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:10px;padding:8px 12px;background:rgba(13,27,61,.92);backdrop-filter:blur(6px);border-bottom:2px solid rgba(245,197,66,.35)}
.logo{width:44px;height:44px;border-radius:12px;background:#fff;object-fit:contain;box-shadow:0 3px 0 rgba(0,0,0,.25)}
.brand{flex:1;text-align:right;background:none;border:0;color:var(--gold);font:800 1.15rem Rubik,sans-serif;cursor:pointer;padding:6px 4px}
.timer{font-weight:800;font-size:1.05rem;background:var(--navy3);color:#fff;padding:6px 12px;border-radius:999px;box-shadow:inset 0 -3px 0 rgba(0,0,0,.25),0 3px 0 rgba(0,0,0,.25);font-variant-numeric:tabular-nums;direction:ltr}
.timer.low{background:var(--coral);animation:pulse 1s infinite}
.timer.flash{animation:flash .6s 2}
@keyframes pulse{50%{transform:scale(1.08)}}
@keyframes flash{50%{background:var(--coral);transform:scale(1.15)}}
main{max-width:760px;margin:0 auto;padding:14px 14px 30px}
.screen{animation:in .35s ease}
@keyframes in{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
h1,h2{color:var(--gold);text-align:center;margin:.3em 0 .2em;line-height:1.2;text-shadow:0 3px 0 rgba(0,0,0,.35)}
h1{font-size:clamp(2rem,9vw,3rem);font-weight:800}
h2{font-size:clamp(1.5rem,6.5vw,2.1rem)}
h3{margin:.1em 0 .5em;color:var(--gold);font-size:1.2rem}
.sub{text-align:center;opacity:.9;margin:.2em 0 1em}
.sub.small{font-size:.95rem}
.hero,.st-img,.deco{margin:0 0 12px;border-radius:var(--r);overflow:hidden;box-shadow:0 8px 0 rgba(0,0,0,.25),0 14px 30px rgba(0,0,0,.35);border:3px solid rgba(245,197,66,.55)}
.st-img img,.hero img,.deco img{width:100%;aspect-ratio:3/2;object-fit:cover}
.st-img img{aspect-ratio:16/7}
.deco{margin-top:18px}
.card{background:linear-gradient(180deg,#1d3270,#172a5e);border-radius:var(--r);padding:16px 16px;margin:12px 0;box-shadow:0 6px 0 rgba(0,0,0,.28),inset 0 2px 0 rgba(255,255,255,.08);border:2px solid rgba(255,255,255,.08)}
.story p{margin:.45em 0;font-size:1.1rem}
.story .lead{font-size:1.25rem}
.story b{color:var(--gold)}
.tip{background:rgba(245,197,66,.12);border-radius:14px;padding:8px 10px;font-size:1rem!important}
.btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;min-height:54px;margin:10px 0;padding:12px 18px;border:0;border-radius:18px;font:700 1.12rem Rubik,sans-serif;color:#fff;background:var(--navy3);cursor:pointer;box-shadow:0 6px 0 #0a1530,0 10px 18px rgba(0,0,0,.3);transition:transform .08s,box-shadow .08s}
.btn:active{transform:translateY(4px);box-shadow:0 2px 0 #0a1530}
.btn.gold{background:linear-gradient(180deg,#ffd862,var(--gold2));color:var(--ink);box-shadow:0 6px 0 #9c7108,0 10px 18px rgba(0,0,0,.3)}
.btn.gold:active{box-shadow:0 2px 0 #9c7108}
.btn.big{min-height:64px;font-size:1.3rem}
.btn.ghost{background:transparent;box-shadow:none;border:2px dashed rgba(255,255,255,.3);min-height:48px;font-size:1rem}
.btn.small{width:auto;min-height:44px;margin:0;padding:8px 14px;font-size:1rem}
.btn.hint{background:linear-gradient(180deg,#56d6c4,#2ba595);color:#062a26;box-shadow:0 6px 0 #1a6d62}
.btn:disabled{opacity:.55;cursor:not-allowed}
.switch{display:flex;align-items:center;gap:12px;font-size:1.1rem;cursor:pointer}
.switch input{width:26px;height:26px;accent-color:var(--gold)}
.code-strip{display:flex;justify-content:center;gap:8px;margin:10px 0 14px;direction:ltr}
.cd{width:52px;height:62px;display:grid;place-items:center;font-size:1.6rem;font-weight:800;border-radius:14px;background:#0a1530;box-shadow:inset 0 3px 0 rgba(0,0,0,.4),0 3px 0 rgba(255,255,255,.08)}
.cd.on{background:linear-gradient(180deg,#ffd862,var(--gold2));color:var(--ink);font-size:2rem;box-shadow:0 4px 0 #9c7108}
.stations{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.st-btn{width:100%;display:flex;align-items:center;gap:12px;padding:12px 14px;min-height:70px;border-radius:20px;border:0;font:600 1.1rem Rubik,sans-serif;color:#fff;text-align:right;cursor:pointer;background:var(--navy3);box-shadow:0 6px 0 #0a1530}
.st-btn .ic{font-size:1.8rem}
.st-btn .t{flex:1;display:flex;flex-direction:column}
.st-btn small{opacity:.8;font-weight:400;font-size:.9rem}
.st-btn .d{font-size:1.7rem;font-weight:800;color:var(--gold);min-width:1ch}
.st-btn.open{background:linear-gradient(180deg,#2c4fa8,#213f8c);outline:3px solid var(--gold);animation:glow 1.6s infinite}
.st-btn.done{background:linear-gradient(180deg,#1f6b62,#195a52)}
.st-btn.locked{opacity:.55;cursor:not-allowed}
@keyframes glow{50%{box-shadow:0 6px 0 #0a1530,0 0 22px rgba(245,197,66,.6)}}
.st-head{display:flex;align-items:center;justify-content:center;gap:10px;margin:4px 0 10px}
.st-head h2{margin:0}
.st-num{width:44px;height:44px;flex:none;display:grid;place-items:center;border-radius:50%;background:var(--gold);color:var(--ink);font-weight:800;font-size:1.3rem;box-shadow:0 4px 0 #9c7108}
.explain-top{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:6px}
.explain-top h3{margin:0}
.niqqud{font-family:"Noto Serif Hebrew","David Libre","Frank Ruhl Libre",serif;font-size:1.32rem;line-height:2.05;background:var(--cream);color:var(--ink);border-radius:16px;padding:12px 14px;box-shadow:inset 0 -4px 0 rgba(0,0,0,.08)}
.niqqud p{margin:.15em 0}
.q{font-size:1.22rem;font-weight:700;margin:.2em 0 .6em}
#answerForm{display:flex;flex-direction:column;gap:0}
input[type=text]{width:100%;min-height:56px;padding:12px 16px;border-radius:16px;border:3px solid var(--gold);background:#fff;color:var(--ink);font:600 1.2rem Rubik,sans-serif;box-shadow:inset 0 3px 0 rgba(0,0,0,.08)}
.feedback{min-height:1.6em;font-weight:700;font-size:1.12rem;margin:.4em 0;text-align:center}
.feedback.ok{color:#7ff0c2}.feedback.bad{color:#ffb3a8}.feedback.warn{color:var(--gold)}
.shake{animation:shake .45s}
@keyframes shake{20%,60%{transform:translateX(-9px)}40%,80%{transform:translateX(9px)}}
.hint-box{background:rgba(63,193,176,.16);border-right:5px solid var(--teal);border-radius:12px;padding:8px 12px;margin:8px 0}
.unlock{text-align:center;background:radial-gradient(circle at 50% 30%,#2e4fa6,#14275a);border-radius:var(--r);padding:18px 14px;margin:14px 0;border:3px solid var(--gold);box-shadow:0 8px 0 rgba(0,0,0,.3)}
.lock-anim{font-size:4.2rem;line-height:1;height:5rem;display:grid;place-items:center}
.unlock.go .lock{display:inline-block;animation:unlock 1.1s ease}
@keyframes unlock{0%{transform:scale(.6) rotate(0)}25%{transform:scale(1.25) rotate(-14deg)}45%{transform:scale(1.2) rotate(14deg)}60%{transform:scale(1.3) rotate(-6deg)}100%{transform:scale(1) rotate(0)}}
.digit-label{margin:.4em 0 0;opacity:.9}
.digit{display:inline-grid;place-items:center;width:96px;height:110px;margin:8px auto;font-size:4rem;font-weight:800;color:var(--ink);background:linear-gradient(180deg,#ffe28a,var(--gold2));border-radius:20px;box-shadow:0 7px 0 #9c7108}
.unlock.go .digit{animation:flip .9s .5s both}
@keyframes flip{from{transform:rotateX(90deg);opacity:0}to{transform:none;opacity:1}}
.why{font-size:1.08rem}
.door{position:relative;height:220px;max-width:320px;margin:10px auto 6px;perspective:700px;background:radial-gradient(circle at 50% 40%,#fff3c4,#f5c542 40%,#b67d10);border-radius:150px 150px 14px 14px;overflow:hidden;border:6px solid #8a5a12;box-shadow:0 8px 0 rgba(0,0,0,.3)}
.leaf{position:absolute;top:0;bottom:0;width:50%;background:repeating-linear-gradient(0deg,#7b4a1e 0 18px,#6a3f18 18px 20px);transition:transform 1.3s cubic-bezier(.6,.05,.3,1)}
.leaf.left{left:0;transform-origin:left;border-right:2px solid #3e230c}
.leaf.right{right:0;transform-origin:right}
.padlock{position:absolute;left:50%;top:52%;transform:translate(-50%,-50%);font-size:3.2rem;transition:opacity .4s,transform .6s}
.door.opened .leaf.left{transform:rotateY(80deg)}
.door.opened .leaf.right{transform:rotateY(-80deg)}
.door.opened .padlock{opacity:0;transform:translate(-50%,40%) rotate(40deg)}
.code-form{display:flex;flex-direction:column}
#codeInput{text-align:center;font-size:2rem;letter-spacing:.4em;font-variant-numeric:tabular-nums}
.confetti{position:fixed;inset:0;pointer-events:none;z-index:50;overflow:hidden}
.confetti i{position:absolute;top:-20px;width:10px;height:16px;border-radius:3px;animation:fall linear forwards}
@keyframes fall{to{top:110vh;transform:rotate(720deg) translateX(40px)}}
.name-card label{display:block;font-weight:700;margin-bottom:6px}
.certificate{margin:14px 0;padding:10px;border-radius:12px;background:#f9f1dc;box-shadow:0 10px 30px rgba(0,0,0,.4);color:#2a2238}
.cert-inner{position:relative;border:4px double #b8860b;border-radius:8px;padding:22px 16px 18px;text-align:center;background:radial-gradient(circle at 50% 0,#fffaf0,#f6ead0)}
.cert-logo{position:absolute;top:10px;left:10px;width:48px;height:48px;border-radius:10px;background:#fff;object-fit:contain}
.cert-seal{font-size:2.6rem}
.cert-kicker{margin:.2em 0;font-family:"Noto Serif Hebrew",serif;font-size:1.05rem;color:#8a6410;letter-spacing:.05em}
.cert-title{font-family:"Noto Serif Hebrew",serif;color:#1d2f6b;font-size:1.6rem;margin:.1em 0 .4em}
.cert-name{font-size:1.7rem;font-weight:800;color:#1d2f6b;border-bottom:2px solid #b8860b;display:inline-block;padding:0 14px 2px;margin:.1em 0 .5em;word-break:break-word}
.cert-stats{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 16px;margin:10px 0;font-size:.98rem}
.cert-sign{margin:.8em 0 0;font-family:"Noto Serif Hebrew",serif;color:#5a4a2a}
.teacher ul,.card ul{padding-right:1.2em;margin:.3em 0}
.card li{margin:.35em 0}
.note{background:rgba(245,197,66,.12);border-radius:12px;padding:8px 10px}
.key{width:100%;border-collapse:collapse;margin:12px 0;font-size:1rem}
.key th,.key td{border:1px solid rgba(255,255,255,.2);padding:8px;text-align:right;vertical-align:top}
.key th{background:rgba(245,197,66,.18);color:var(--gold)}
.key td.num{text-align:center;font-weight:800;font-size:1.3rem;color:var(--gold)}
.sources a{color:#ffe08a}
.toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);z-index:60;background:#fff;color:var(--ink);font-weight:700;padding:12px 18px;border-radius:16px;box-shadow:0 6px 0 rgba(0,0,0,.25);max-width:90vw;text-align:center}
.footer{text-align:center;padding:16px 14px 26px;opacity:.95;border-top:1px solid rgba(255,255,255,.1)}
.footer p{margin:.4em 0 0}
.linkbtn{background:none;border:0;color:var(--gold);font:600 1rem Rubik,sans-serif;cursor:pointer;padding:8px 10px;margin:0 4px;text-decoration:underline}
@media (min-width:700px){.btn{width:auto;min-width:280px;margin-inline:auto}.btn.small{min-width:0}#answerForm .btn,.code-form .btn{width:100%}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

h1[tabindex="-1"]:focus,h2[tabindex="-1"]:focus{outline:none}