@font-face{font-family:Nunito;font-style:normal;font-weight:500 900;font-display:swap;src:url(/fonts/nunito-latin.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
:root{
  --bg:#f1f8fa;--card:#fff;--ink:#0b2540;--muted:#5a7285;--line:#d9e7ee;
  --primary:#0e9aa7;--primary-d:#0a7480;--accent:#0e9aa7;
  --yel:#ffc53d;--yel-d:#e8a400;--red:#ef4f55;--red-d:#d63f45;--good:#1f9d6b;--good-bg:#e5f7ef;--bad:#d63f45;--bad-bg:#fdecec;--info-bg:#eaf3fd;
  --pos-t:#a36d00;--neg-t:#d0353c;--r:18px;--sh:0 2px 0 rgba(11,37,64,.05),0 10px 28px -14px rgba(11,37,64,.25);
  --fs:16px;
}
html.big{--fs:19px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;font-size:var(--fs)}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Nunito,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;font-weight:600;line-height:1.5;-webkit-tap-highlight-color:transparent;overscroll-behavior-y:none}
h1,h2,h3{line-height:1.2;margin:0}
p{margin:.4em 0}
button{font:inherit;color:inherit;cursor:pointer}
button:disabled{cursor:not-allowed}
:focus-visible{outline:3px solid #7cc8ee;outline-offset:2px;border-radius:8px}
.boot{padding:40vh 24px 0;text-align:center;color:var(--muted);font-weight:800}
.muted{color:var(--muted)}.small{font-size:.85rem}
.neg{color:var(--neg-t)}.pos{color:var(--pos-t)}
b,strong{font-weight:900}
.ic{display:inline-flex;width:1.2em;height:1.2em;vertical-align:-.2em}.ic svg{width:100%;height:100%}
hr{border:0;border-top:2px dashed var(--line);margin:18px 0}
code{background:#e7f1f5;padding:2px 8px;border-radius:8px;font-weight:800}

/* ---------- kerangka layar ---------- */
.screen{min-height:100dvh;display:flex;flex-direction:column}
.topbar{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:48px 1fr 48px;align-items:center;gap:6px;padding:calc(8px + env(safe-area-inset-top)) 10px 8px;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:4px solid var(--accent)}
.top-title{font-size:1.05rem;font-weight:900;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.icon-btn{width:44px;height:44px;border-radius:14px;border:0;background:transparent;display:grid;place-items:center;color:var(--ink)}
.icon-btn:active{background:#e5f1f5}.icon-btn.ghost{visibility:hidden}.icon-btn .ic{width:26px;height:26px}
.screen-body{flex:1;width:100%;max-width:680px;margin:0 auto;padding:16px 16px 120px}
.screen-body.narrow{max-width:460px}
.actionbar{position:sticky;bottom:0;z-index:15;padding:12px 16px calc(12px + env(safe-area-inset-bottom));background:linear-gradient(to top,var(--bg) 70%,rgba(241,248,250,0));margin-top:-96px;pointer-events:none}
.actionbar>*{pointer-events:auto}.actionbar.hide{display:none}
.actionbar .btn{width:100%;max-width:648px;margin:0 auto;display:block}
.sec-title{font-size:1.25rem;font-weight:900;margin:6px 0 10px}
.card{background:var(--card);border-radius:var(--r);box-shadow:var(--sh);padding:18px;margin:0 0 14px}
.card h2,.card h3{margin-bottom:6px}
.prose{font-size:1.02rem}.prose ul,.prose ol{padding-left:1.2em;margin:.4em 0}.prose li{margin:.25em 0}
.formula{font-size:1.5rem;font-weight:900;text-align:center;background:#fff8e1;border:3px dashed var(--yel);border-radius:14px;padding:10px;margin:8px 0}
.signs{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin:8px 0}.signs span{background:#f0f7fa;border-radius:12px;padding:8px 10px;text-align:center;font-weight:800}

/* ---------- tombol ---------- */
.btn{border:0;border-radius:16px;padding:12px 18px;font-weight:900;background:#e3eff4;color:var(--ink);box-shadow:0 4px 0 #c5d9e2;transition:transform .08s,box-shadow .08s;display:inline-flex;gap:8px;align-items:center;justify-content:center;text-align:center}
.btn:active:not(:disabled){transform:translateY(3px);box-shadow:0 1px 0 #c5d9e2}
.btn.primary{background:var(--accent);color:#fff;box-shadow:0 5px 0 color-mix(in srgb,var(--accent) 60%,#000)}
.btn.primary:active:not(:disabled){box-shadow:0 2px 0 color-mix(in srgb,var(--accent) 60%,#000)}
.btn.primary:disabled{background:#b9ccd6;box-shadow:0 5px 0 #a3b8c3;color:#fff}
.btn.big{padding:16px 20px;font-size:1.1rem;border-radius:18px}
.btn.small{padding:8px 14px;font-size:.9rem;border-radius:12px;box-shadow:0 3px 0 #c5d9e2}
.btn.ghost{background:#fff;border:2px solid var(--line);box-shadow:none}
.btn.danger{background:var(--bad-bg);color:var(--bad);box-shadow:0 3px 0 #f3c3c3}
.btn.choice{background:#fff;border:3px solid var(--line);box-shadow:0 4px 0 var(--line);min-width:64px;font-size:1.15rem}
.btn.choice.wide{display:block;width:100%;text-align:left;margin:8px 0;font-size:1rem;padding:14px 16px}
.btn.choice.right{border-color:var(--good);background:var(--good-bg);box-shadow:0 4px 0 #9fdcc0}
.btn.choice:disabled{opacity:.55}
.link-btn{background:none;border:0;color:var(--primary-d);font-weight:800;text-decoration:underline;padding:6px;text-align:left}
.link-btn.center{display:block;margin:12px auto}
.chip-btn{border:2px solid var(--line);background:#fff;border-radius:10px;padding:2px 8px;font-weight:900;font-size:.8rem}
.row-actions{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0}
.field{width:100%;border:3px solid var(--line);border-radius:14px;padding:12px 14px;font:inherit;font-weight:700;background:#fff;color:var(--ink)}
.field:focus{border-color:var(--primary);outline:none}.field.area{resize:vertical;min-height:72px}.field.sel{appearance:auto}.field.mini{width:auto;padding:4px 8px}
label{font-weight:800;display:block;margin:12px 0 4px}
.form-err{color:var(--bad);font-weight:800;min-height:1.4em;margin:6px 0}

/* ---------- masuk ---------- */
.login{background:linear-gradient(#bfe9f7,#eaf8fb 260px,var(--bg) 260px)}
.hero{padding:calc(10px + env(safe-area-inset-top)) 0 6px;text-align:center}
.hero-art{max-width:520px;margin:0 auto;border-radius:0 0 32px 32px;overflow:hidden}.hero-art svg{display:block;width:100%;height:auto}
.hero h1{font-size:2.3rem;font-weight:900;margin-top:14px;color:var(--ink);letter-spacing:-.5px}
.hero .lead{max-width:420px;margin:8px auto 0;padding:0 18px;color:var(--muted)}
.login-form{background:#fff;border-radius:22px;padding:20px;box-shadow:var(--sh);margin-top:14px}
.login-foot{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-top:14px;font-size:.82rem;color:var(--muted)}.login-foot a{color:var(--primary-d);font-weight:800}

/* ---------- beranda ---------- */
.greet{display:flex;justify-content:space-between;align-items:center;gap:12px}
.hi{font-size:1.4rem}
.ring{--p:0;width:64px;height:64px;border-radius:50%;background:conic-gradient(var(--primary) calc(var(--p)*1%),#dbe9ef 0);display:grid;place-items:center;position:relative;flex:none}
.ring::before{content:"";position:absolute;inset:7px;background:#fff;border-radius:50%}.ring span{position:relative;font-weight:900;font-size:.9rem}
.sync-dot{display:inline-block;font-size:.75rem;font-weight:800;padding:2px 10px;border-radius:20px;margin:0 0 10px;background:#e5f7ef;color:#12724e}
.sync-dot.wait{background:#fff4d6;color:#8a6200}.sync-dot.off{background:#fdecec;color:#a52a2a}.sync-dot.guest{background:#eaf3fd;color:#1b5b9b}
.map{position:relative;padding-left:0}
.node{display:flex;gap:14px;padding:0 0 18px;text-decoration:none;color:inherit;position:relative;animation:rise .5s both;animation-delay:calc(var(--i)*60ms)}
.node::before{content:"";position:absolute;left:23px;top:50px;bottom:-4px;width:4px;background:repeating-linear-gradient(to bottom,#bcd3dc 0 8px,transparent 8px 14px);border-radius:2px}
.node:last-child::before{display:none}
.node-dot{flex:none;width:50px;height:50px;border-radius:50%;background:var(--c);color:#fff;display:grid;place-items:center;font-weight:900;font-size:1.3rem;box-shadow:0 5px 0 color-mix(in srgb,var(--c) 60%,#000);z-index:1}
.node.locked .node-dot{background:#b9ccd6;box-shadow:0 5px 0 #a3b8c3}
.node.done .node-dot{background:var(--good);box-shadow:0 5px 0 #14774f}
.node-body{flex:1;background:#fff;border-radius:var(--r);padding:12px 14px;box-shadow:var(--sh);border-left:6px solid var(--c)}
.node.open .node-body{outline:3px solid color-mix(in srgb,var(--c) 40%,transparent)}
.node.locked{opacity:.65;pointer-events:none}
.node-tp{font-size:.75rem;font-weight:900;color:var(--c);text-transform:uppercase;letter-spacing:.04em}
.node-body h3{font-size:1.08rem}.node-body p{font-size:.88rem;color:var(--muted);margin:2px 0 0}
.stars{display:inline-flex;gap:2px;margin-top:4px}.star{width:22px;height:22px;color:#d3dfe6}.star.on{color:var(--yel)}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

/* ---------- unit ---------- */
.stage-nav{display:flex;align-items:center;gap:6px;margin:0 0 10px;overflow-x:auto;padding:6px 4px 6px}
.sd{flex:none;width:28px;height:28px;border-radius:50%;background:#dbe9ef;display:grid;place-items:center;font-size:.8rem;font-weight:900;color:var(--muted)}
.sd.cur{background:var(--accent);color:#fff;transform:scale(1.15)}.sd.done{background:var(--good);color:#fff}.sd .ic{width:16px;height:16px}
.sd-label{margin-left:6px;font-weight:900;white-space:nowrap}
.unit-hero{color:#fff;border-radius:var(--r);padding:20px;margin-bottom:14px;box-shadow:var(--sh)}
.unit-hero .tp{font-size:.8rem;font-weight:900;opacity:.85;text-transform:uppercase;letter-spacing:.06em}.unit-hero h2{font-size:1.5rem;margin:2px 0 6px}.unit-hero p{margin:0;opacity:.95}
.video-card{background:#0b2540;border-radius:var(--r);overflow:hidden;margin-bottom:14px;box-shadow:var(--sh)}
.video-card video{width:100%;display:block;aspect-ratio:16/9;background:#0b2540}
.video-note{display:flex;gap:8px;align-items:center;color:#cfe3ee;font-size:.8rem;padding:8px 12px}
.pemantik{display:flex;gap:10px;align-items:flex-start;background:#fff8e1;border-radius:14px;padding:12px;margin:12px 0;color:#6b4a00}.pemantik .ic{flex:none;margin-top:2px;width:24px;height:24px}
.cards{display:grid;gap:14px}
.konsep{position:relative;padding-top:24px;animation:rise .5s both;animation-delay:var(--delay)}
.konsep-no{position:absolute;top:-12px;left:16px;width:32px;height:32px;border-radius:50%;color:#fff;display:grid;place-items:center;font-weight:900;box-shadow:0 3px 0 rgba(0,0,0,.2)}
.fig{margin-top:10px;background:#f6fbfd;border-radius:14px;padding:8px;border:2px solid #e3f0f5}
.fig-svg{width:100%;height:auto;display:block}.fig-cap{text-align:center;font-size:.85rem;color:var(--muted);padding:4px}
.mini-table{width:100%;border-collapse:collapse;font-weight:800;font-size:1.05rem}.mini-table td{padding:4px 8px;text-align:center}.mini-table tr.new{background:#fff3c8}

/* ---------- soal ---------- */
.quiz-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.pill{background:color-mix(in srgb,var(--accent) 14%,#fff);color:var(--accent);font-weight:900;font-size:.78rem;padding:4px 12px;border-radius:20px;text-transform:uppercase;letter-spacing:.04em}
.count{font-weight:900;color:var(--muted)}
.progress{height:10px;background:#dbe9ef;border-radius:8px;overflow:hidden;margin-bottom:14px}.progress i{display:block;height:100%;background:var(--accent);border-radius:8px;transition:width .4s}
.mc-q{font-size:1.15rem;font-weight:800;margin:6px 0 14px;line-height:1.4}
.mc-opts{display:grid;gap:10px}
.mc-opt{display:flex;align-items:center;gap:12px;text-align:left;background:#fff;border:3px solid var(--line);border-radius:16px;padding:12px 14px;font-size:1.05rem;font-weight:800;box-shadow:0 4px 0 var(--line);min-height:56px}
.mc-opt:active:not(:disabled){transform:translateY(2px);box-shadow:0 2px 0 var(--line)}
.mc-l{flex:none;width:32px;height:32px;border-radius:10px;background:#e8f1f5;display:grid;place-items:center;font-weight:900}
.mc-opt.sel{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 9%,#fff);box-shadow:0 4px 0 color-mix(in srgb,var(--accent) 50%,#fff)}.mc-opt.sel .mc-l{background:var(--accent);color:#fff}
.mc-opt.right{border-color:var(--good);background:var(--good-bg);box-shadow:0 4px 0 #9fdcc0}.mc-opt.right .mc-l{background:var(--good);color:#fff}
.mc-opt.wrong{border-color:var(--bad);background:var(--bad-bg);box-shadow:0 4px 0 #f3c3c3}.mc-opt.wrong .mc-l{background:var(--bad);color:#fff}
.feedback{scroll-margin-bottom:120px;display:none;gap:12px;align-items:flex-start;border-radius:16px;padding:12px 14px;margin:14px 0;font-weight:700}
.feedback.good,.feedback.bad,.feedback.info{display:flex;animation:pop .35s}
.feedback>.ic{flex:none;width:28px;height:28px;margin-top:1px}
.feedback.good{background:var(--good-bg);color:#0f6a47}.feedback.bad{background:var(--bad-bg);color:#9e2a2a}.feedback.info{background:var(--info-bg);color:#1b4f86}
.feedback .tip,.answer-note{margin-top:6px;font-weight:700;font-size:.92rem;opacity:.95}
.feedback .btn{margin:8px 8px 0 0}
@keyframes pop{0%{transform:scale(.96);opacity:0}100%{transform:none;opacity:1}}
.shake{animation:shake .4s}@keyframes shake{20%,60%{transform:translateX(-7px)}40%,80%{transform:translateX(7px)}}

/* ---------- latihan per langkah ---------- */
.expr-card{background:linear-gradient(135deg,#fff,#f0f9fb);border:3px solid var(--line);border-radius:var(--r);padding:16px;margin:8px 0 12px;font-size:2rem;font-weight:900;text-align:center;letter-spacing:.5px;box-shadow:var(--sh);overflow-x:auto;white-space:nowrap}
.expr-card.small{font-size:1.5rem}.expr-lab{display:block;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:2px}
.step-row{margin:8px 0}.step-line{display:flex;align-items:center;gap:8px}
.step-no{flex:none;width:28px;height:28px;border-radius:50%;background:#e3eff4;display:grid;place-items:center;font-weight:900;font-size:.85rem}
.step-field{flex:1;min-width:0;border:3px solid var(--line);border-radius:14px;padding:12px;font:inherit;font-size:1.25rem;font-weight:800;background:#fff;color:var(--ink);letter-spacing:.5px}
.step-field:focus{border-color:var(--accent);outline:none}
.step-stat{flex:none;width:30px;height:30px;display:grid;place-items:center;font-weight:900;color:var(--muted)}.step-stat .ic{width:26px;height:26px}
.step-row.ok .step-field{border-color:var(--good);background:var(--good-bg)}.step-row.ok .step-stat{color:var(--good)}
.step-row.err .step-field{border-color:var(--bad);background:var(--bad-bg)}.step-row.err .step-stat,.step-row.format .step-stat{color:var(--bad)}
.step-row.same .step-field{border-color:#c9b24a;background:#fffbe6}.step-row.format .step-field{border-color:#e39a2f;background:#fff4e2}
.step-fb{font-size:.85rem;color:var(--bad);margin:2px 0 0 36px}
.step-tools{display:flex;justify-content:space-between;margin:2px 0 6px}
.keypad{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;background:#dcebf1;border-radius:20px;padding:10px;margin-top:8px;user-select:none;-webkit-user-select:none}
.keypad.off{opacity:.5;pointer-events:none}
.key{height:52px;border:0;border-radius:14px;font-size:1.4rem;font-weight:900;background:#fff;box-shadow:0 4px 0 #b9d0da}
.key:active{transform:translateY(3px);box-shadow:0 1px 0 #b9d0da}
.key.op{background:#f6fbfd;color:var(--primary-d)}.key.wide{grid-column:span 2;font-size:1.05rem}.key.danger{background:#ffe9e9;color:var(--bad)}.key.go{background:var(--accent);color:#fff;box-shadow:0 4px 0 color-mix(in srgb,var(--accent) 60%,#000)}
.hint-box{display:grid;gap:8px}.hint{display:flex;gap:10px;background:#fff8e1;color:#6b4a00;border-radius:14px;padding:10px 12px;font-weight:700}.hint .ic{flex:none;margin-top:2px}

/* ---------- narasi ---------- */
.nar-wrap{margin-bottom:12px}
.narration{display:flex;align-items:center;gap:12px;background:#fff;border-radius:18px;padding:10px 12px;box-shadow:var(--sh);border:3px solid #e1eef3}
.narration.on{border-color:var(--accent)}
.play-btn{flex:none;width:48px;height:48px;border-radius:50%;border:0;background:var(--accent);color:#fff;display:grid;place-items:center;box-shadow:0 4px 0 color-mix(in srgb,var(--accent) 60%,#000)}.play-btn .ic{width:24px;height:24px}
.nar-mid{flex:1;min-width:0}.nar-mid b{display:block;font-size:.92rem}
.bar{height:8px;background:#dbe9ef;border-radius:6px;overflow:hidden;margin-top:6px}.bar i{display:block;width:0;height:100%;background:var(--accent);transition:width .25s linear}
.time{font-size:.78rem;color:var(--muted);font-weight:800;min-width:48px;text-align:right}
.transcript{margin-top:6px;font-size:.88rem;color:var(--muted)}.transcript summary{cursor:pointer;font-weight:800}

/* ---------- contoh terurai ---------- */
.ex-title{margin:8px 0}
.ex-steps{list-style:none;padding:0;margin:0;counter-reset:s}
.ex-step{counter-increment:s;position:relative;background:#fff;border-radius:16px;padding:12px 14px 12px 52px;margin:10px 0;box-shadow:var(--sh);animation:rise .4s}
.ex-step::before{content:counter(s);position:absolute;left:12px;top:12px;width:28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;font-weight:900;font-size:.9rem}
.ex-t{font-size:1.2rem;font-weight:900}.ex-why{color:var(--muted);font-size:.9rem;margin-top:2px}.ex-q{font-weight:800;margin-bottom:6px}
.ex-step.good{background:var(--good-bg)}.ex-step.wrong{background:var(--bad-bg)}
.fill{width:130px;border:3px dashed var(--accent);border-radius:12px;padding:6px 10px;font:inherit;font-size:1.15rem;font-weight:800;margin:0 8px 0 2px;text-align:center}
.ex-actions{margin:12px 0}.divider{display:flex;align-items:center;gap:10px;margin:22px 0 8px;color:var(--muted);font-weight:900;font-size:.85rem;text-transform:uppercase;letter-spacing:.05em}.divider::before,.divider::after{content:"";flex:1;height:3px;background:var(--line);border-radius:2px}
.good-note{background:var(--good-bg);color:#0f6a47;border-radius:14px;padding:12px;font-weight:800;margin-top:14px}

/* ---------- jelajah ---------- */
.task-prompt{background:#fff;border-radius:16px;padding:12px 14px;font-size:1.08rem;font-weight:800;margin:6px 0 10px;box-shadow:var(--sh)}
.jel-stage{background:#fff;border-radius:var(--r);box-shadow:var(--sh);padding:6px 4px 0;overflow:hidden;touch-action:none}
.numline{width:100%;height:auto;display:block;user-select:none;-webkit-user-select:none}
.nl-axis{stroke:#0b2540;stroke-width:4;stroke-linecap:round}.nl-tick{stroke:#8aa4b4;stroke-width:2}.nl-zero{stroke:#e8a400;stroke-width:4}
.nl-lab{font-size:11px;font-weight:800;text-anchor:middle;fill:#4b6679}.nl-lab.n{fill:var(--neg-t)}.nl-lab.z{fill:#a36d00;font-size:13px}.nl-lab.p{fill:#2b78b0}
.nl-pt .nl-stem{stroke:#0b2540;stroke-width:3;stroke-dasharray:4 3;opacity:.5}
.nl-dot{stroke:#fff;stroke-width:4;filter:drop-shadow(0 3px 2px rgba(0,0,0,.25))}.nl-pt.drag{cursor:grab}.nl-pt.held .nl-dot{r:18px}
.nl-val{font-size:15px;font-weight:900;text-anchor:middle;fill:#0b2540}
.nl-pt.bump .nl-dot{animation:bump .3s}@keyframes bump{50%{transform:translateY(-10px)}}
.nl-arc{fill:none;stroke:#2b78b0;stroke-width:3;stroke-dasharray:6 5}.nl-arc.mirror{stroke:#7c5cff}
.choose-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:12px 0}
.line-demo{margin-top:12px}

.chip-board{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:10px 0}
.zone{min-height:130px;border-radius:var(--r);padding:12px;display:flex;flex-wrap:wrap;gap:8px;align-content:flex-start;position:relative}
.zone.y{background:#fff8e1;border:3px dashed var(--yel)}.zone.r{background:#fff0f0;border:3px dashed #f4a1a4}
.zone::before{position:absolute;top:-11px;left:12px;font-size:.72rem;font-weight:900;padding:1px 10px;border-radius:10px;background:var(--bg)}
.zone.y::before{content:"Kuning  +1";color:var(--pos-t)}.zone.r::before{content:"Merah  −1";color:var(--neg-t)}
.chip{width:44px;height:44px;border-radius:50%;border:3px solid rgba(255,255,255,.9);font-size:1.4rem;font-weight:900;display:grid;place-items:center;box-shadow:0 4px 0 rgba(0,0,0,.18);transition:transform .15s,opacity .25s}
.chip.y{background:var(--yel);color:#5a3d00}.chip.r{background:var(--red);color:#fff}
.chip.sel{transform:translateY(-6px) scale(1.12);box-shadow:0 10px 0 rgba(0,0,0,.15),0 0 0 4px #7cc8ee}
.chip.zap{animation:zap .28s forwards;pointer-events:none}@keyframes zap{to{transform:scale(1.5) rotate(40deg);opacity:0}}
.chip.zero-new{animation:pop .5s;box-shadow:0 0 0 4px rgba(124,92,255,.4),0 4px 0 rgba(0,0,0,.18)}
.board-info{display:flex;gap:14px;flex-wrap:wrap;font-weight:800;color:var(--muted);margin:6px 0;font-size:.92rem}.board-info b{color:var(--ink)}
.goal{background:#eef0ff;color:#3d2fa6;border-radius:14px;padding:10px 12px;font-weight:800;margin:6px 0}
.ask{font-weight:800;margin:12px 0 8px}
.stepper{display:flex;align-items:center;gap:14px;justify-content:center;margin:8px 0}
.st-btn{width:56px;height:56px;border-radius:16px;border:0;background:#fff;font-size:1.8rem;font-weight:900;box-shadow:0 4px 0 var(--line);border:3px solid var(--line)}
.stepper-val{min-width:90px;text-align:center;font-size:2.4rem;font-weight:900}.stepper.good{filter:saturate(1.2)}
.expr-inline b{font-size:1.1em}

.pat{display:grid;gap:4px}
.pat-row{display:grid;grid-template-columns:1fr auto;align-items:center;gap:10px;background:#fff;border-radius:14px;padding:10px 14px;box-shadow:var(--sh);font-size:1.15rem;font-weight:900}
.pat-row.given{background:#f3f8fa}.pat-row.right{background:var(--good-bg)}
.pat-opts{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}.pat-opts .btn{padding:8px 12px;font-size:1rem;min-width:52px}
.pat-r b{font-size:1.4rem}
.pat-step{display:flex;justify-content:space-between;font-size:.74rem;color:var(--primary-d);padding:0 24px;font-weight:800}
.order-expr{display:flex;flex-wrap:wrap;gap:6px;align-items:center;justify-content:center;background:#fff;border-radius:var(--r);padding:20px 10px;font-size:1.7rem;font-weight:900;box-shadow:var(--sh);margin:10px 0}
.o-grp{display:inline-flex;gap:6px;align-items:center;background:#f3efff;border-radius:12px;padding:2px 8px}
.o-op{width:46px;height:46px;border-radius:50%;border:3px solid var(--line);background:#fff;font-size:1.4rem;font-weight:900;box-shadow:0 3px 0 var(--line)}
.o-op.hint{border-color:var(--yel-d);animation:pulse 1s infinite}@keyframes pulse{50%{box-shadow:0 0 0 8px rgba(255,197,61,.35)}}
.order-log{margin:8px 0;padding-left:24px;font-weight:800}.order-log li{margin:4px 0}

/* ---------- di mana salahnya ---------- */
.sal-box{background:#fff;border-radius:var(--r);padding:14px;box-shadow:var(--sh);margin:10px 0}
.sal-intro{font-weight:900;margin-bottom:8px}
.sal-line{display:flex;gap:10px;align-items:center;width:100%;text-align:left;border:3px solid var(--line);background:#fff;border-radius:14px;padding:12px;margin:6px 0;font-weight:800;font-size:1.05rem}
.sal-line.picked{border-color:var(--bad);background:var(--bad-bg)}.sal-no{width:28px;height:28px;border-radius:50%;background:#e3eff4;display:grid;place-items:center;flex:none;font-weight:900}
.classroom{display:flex;gap:8px;align-items:flex-start;background:#eaf3fd;border-radius:14px;padding:10px 12px;color:#1b4f86}

/* ---------- hasil ---------- */
.result{text-align:center}
.score-big{font-size:3.4rem;font-weight:900;line-height:1;color:var(--primary-d);margin:8px 0}.score-big span{font-size:1.2rem;color:var(--muted)}
.result.low .score-big{color:#c0392b}.result.high .score-big{color:#1f9d6b}
.trophy{width:120px;margin:0 auto 6px}
.checks{list-style:none;padding:0;text-align:left;margin:10px 0}.checks li{padding:6px 0 6px 34px;position:relative}.checks li::before{content:"";position:absolute;left:4px;top:8px;width:20px;height:20px;border-radius:50%;background:var(--good) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 12.5l4 4 8-9' fill='none' stroke='white' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/70%}
.chips-row{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:10px}
.tag{font-size:.8rem;font-weight:900;padding:4px 12px;border-radius:20px;background:#eef3f6}.tag.tanda{background:#ffe5e6;color:#b52c32}.tag.operasi{background:#ece7ff;color:#5b3fd1}.tag.hitung{background:#fff0cc;color:#8a5f00}.tag.konsep{background:#e6eef3;color:#41596a}
.breakdown{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:14px 0}.breakdown div{background:#f2f8fa;border-radius:14px;padding:10px}.breakdown b{display:block;font-size:1.4rem}.breakdown span{font-size:.8rem;color:var(--muted)}
.switch-track{text-align:center}
.card-dl{display:flex;justify-content:space-between;align-items:center;border-left:8px solid var(--line)}
.intro-card h2{margin-bottom:8px}
.qnav{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}.qn{width:36px;height:36px;border-radius:10px;border:2px solid var(--line);background:#fff;font-weight:900}.qn.ans{background:#d8f1e6;border-color:#9fdcc0}.qn.cur{background:var(--primary);color:#fff;border-color:var(--primary)}
.clock{font-weight:900;font-variant-numeric:tabular-nums;background:#e8f6f8;border-radius:12px;padding:6px 10px;text-align:center}.clock.low{background:var(--bad-bg);color:var(--bad)}

/* ---------- dialog dan notifikasi ---------- */
.modal-back{position:fixed;inset:0;z-index:50;background:rgba(11,37,64,.55);display:flex;align-items:flex-end;justify-content:center;opacity:0;transition:opacity .2s}.modal-back.in{opacity:1}
.modal{background:var(--bg);width:100%;max-width:680px;max-height:90dvh;border-radius:26px 26px 0 0;display:flex;flex-direction:column;transform:translateY(30px);transition:transform .25s}.modal-back.in .modal{transform:none}
.modal-head{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:14px 14px 6px 20px}.modal-head h3{font-size:1.05rem}
.modal-body{padding:6px 18px 12px;overflow:auto;flex:1}.modal-actions{padding:10px 18px calc(14px + env(safe-area-inset-bottom));display:flex;gap:10px;justify-content:flex-end}
.toast{position:fixed;left:50%;bottom:110px;transform:translate(-50%,20px);background:#0b2540;color:#fff;padding:10px 18px;border-radius:14px;z-index:70;opacity:0;transition:.3s;font-weight:800;max-width:90vw;text-align:center}.toast.in{opacity:1;transform:translate(-50%,0)}.toast.bad{background:var(--bad)}
.confetti{position:fixed;inset:0;pointer-events:none;z-index:60}
.set-row{display:flex;justify-content:space-between;align-items:center;padding:12px 0;font-weight:800}
.switch{width:54px;height:32px;border-radius:20px;border:0;background:#c6d6de;position:relative;transition:.2s}.switch i{position:absolute;top:4px;left:4px;width:24px;height:24px;border-radius:50%;background:#fff;transition:.2s;box-shadow:0 2px 4px rgba(0,0,0,.25)}.switch.on{background:var(--good)}.switch.on i{left:26px}

/* ---------- dasbor guru ---------- */
.screen-body:has(.guru){max-width:980px}
.g-bar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:14px}.g-bar .sel{flex:1;min-width:220px;width:auto}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:14px}
.stat{background:#fff;border-radius:var(--r);padding:14px;box-shadow:var(--sh);display:flex;flex-direction:column}.stat b{font-size:2rem;line-height:1.1;color:var(--primary-d)}.stat span{font-weight:800}.stat small{color:var(--muted)}
.rec ol{padding-left:1.2em;margin:6px 0}.rec li{margin:6px 0}
.bar-chart{width:100%;height:auto}.gridl{stroke:#e1ecf1;stroke-width:1}.axl{font-size:11px;font-weight:800;fill:#5a7285}.axl.b{fill:#0b2540;font-size:12px}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-weight:800;font-size:.85rem;margin:6px 0}.legend i{display:inline-block;width:14px;height:14px;border-radius:4px;margin-right:6px;vertical-align:-2px}
.attn{list-style:none;padding:0;margin:0}.attn li{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:8px 0;border-bottom:2px solid #eef4f7}
.tbl-wrap{overflow-x:auto}.tbl{width:100%;border-collapse:collapse;font-size:.9rem}.tbl th{text-align:left;font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);padding:6px 8px;border-bottom:3px solid var(--line);white-space:nowrap}.tbl td{padding:9px 8px;border-bottom:2px solid #eef4f7;white-space:nowrap}.tbl tbody tr{cursor:pointer}.tbl tbody tr:hover{background:#f3f9fb}.tbl.small td{cursor:default}
.ud{display:inline-flex;gap:4px}.ud i{width:12px;height:12px;border-radius:50%;background:#dbe9ef}.ud i.on{background:var(--good)}
.demo-tag{font-size:.65rem;background:#eaf3fd;color:#1b5b9b;padding:1px 7px;border-radius:10px;margin-left:6px;font-weight:900;vertical-align:2px}
.hard{list-style:none;padding:0;margin:0}.hard li{margin:10px 0}.hard-t{font-weight:800;font-size:.92rem}.hard-bar{position:relative;height:26px;background:#eef4f7;border-radius:8px;overflow:hidden;margin-top:4px}.hard-bar i{position:absolute;inset:0 auto 0 0;background:#f4a1a4;border-radius:8px}.hard-bar span{position:relative;line-height:26px;padding-left:10px;font-weight:900;font-size:.8rem}
.ud-row{display:flex;gap:6px;flex-wrap:wrap;margin:10px 0}.ud-chip{padding:4px 10px;border-radius:10px;background:#e3eef3;font-weight:900;font-size:.8rem}.ud-chip.on{color:#fff}
.ur{background:#fff;border-radius:14px;padding:10px 12px;margin:8px 0;border:2px solid var(--line)}.ur pre{background:#f3f8fa;border-radius:10px;padding:8px;margin:6px 0;white-space:pre-wrap;font:700 .95rem Nunito,monospace}.ur-q{font-size:.85rem;color:var(--muted)}.ur-sc{display:flex;gap:8px;align-items:center;margin:4px 0 0;font-size:.85rem}
blockquote{margin:8px 0;padding:8px 12px;border-left:5px solid var(--primary);background:#f1f9fb;border-radius:0 12px 12px 0}

@media (min-width:760px){
  .screen-body{padding-top:24px}
  .chip{width:50px;height:50px}.expr-card{font-size:2.4rem}
  .cards{grid-template-columns:1fr 1fr}.cards .konsep:first-child:nth-last-child(odd){grid-column:auto}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

.between{margin:4px 0}.between .feedback{margin:8px 0}.between .row-actions{margin:6px 0}