:root{--bg:#f6f7f9;--fg:#1c2230;--muted:#566074;--card:#fff;--line:#d5dbe5;--pri:#1b5fb4;--pri-fg:#fff;--acc:#b85c00;--good:#17692f;--bad:#b3261e;
--c-p:#1b5fb4;--c-a:#b85c00;--c-g:#17692f;--c-r:#c62828;--c-y:#e8b923;--c-n:#6b7280;--c-w:#ffffff;--c-k:#1c2230;--anim-bg:#eef3fb;--shadow:0 1px 3px rgba(0,0,0,.12);color-scheme:light}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#10141b;--fg:#e8ecf3;--muted:#a7b1c2;--card:#1a212c;--line:#2e3748;--pri:#6ea8ff;--pri-fg:#0b1220;--acc:#ffa84d;--good:#6fd388;--bad:#ff8a80;
--c-p:#3b78d0;--c-a:#c4650a;--c-g:#2e8b4a;--c-r:#d24545;--c-y:#e8b923;--c-n:#9aa4b5;--c-w:#222b39;--c-k:#e8ecf3;--anim-bg:#18202c;color-scheme:dark}}
:root[data-theme="dark"]{--bg:#10141b;--fg:#e8ecf3;--muted:#a7b1c2;--card:#1a212c;--line:#2e3748;--pri:#6ea8ff;--pri-fg:#0b1220;--acc:#ffa84d;--good:#6fd388;--bad:#ff8a80;
--c-p:#3b78d0;--c-a:#c4650a;--c-g:#2e8b4a;--c-r:#d24545;--c-y:#e8b923;--c-n:#9aa4b5;--c-w:#222b39;--c-k:#e8ecf3;--anim-bg:#18202c;color-scheme:dark}
*{box-sizing:border-box}[hidden]{display:none!important}html{font-size:17px}html[data-size=l]{font-size:19px}html[data-size=xl]{font-size:21px}
body{margin:0;background:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans",sans-serif;line-height:1.5;padding-bottom:76px;-webkit-text-size-adjust:100%}
h1{font-size:1.4rem;margin:.2em 0 .4em}h2{font-size:1.2rem;margin:.2em 0 .4em}h3{font-size:1.05rem;margin:.8em 0 .3em}h4{margin:.8em 0 .2em}
a{color:var(--pri)}p{margin:.5em 0}ul,ol{padding-left:1.3em;margin:.4em 0}
main{max-width:720px;margin:0 auto;padding:12px 16px 24px;outline:none}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:var(--card);padding:8px;z-index:99}
:focus-visible{outline:3px solid var(--acc);outline-offset:2px;border-radius:4px}
.top{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:8px 16px;background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.brand{font-weight:700;text-decoration:none;color:var(--fg);margin-right:auto}.who{text-decoration:none;color:var(--fg);display:flex;align-items:center;gap:4px;font-size:.9rem;flex-wrap:wrap}
.bottom{position:fixed;bottom:0;left:0;right:0;display:flex;background:var(--card);border-top:1px solid var(--line);z-index:20;padding-bottom:env(safe-area-inset-bottom)}
.bottom a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:56px;text-decoration:none;color:var(--muted);font-size:.72rem;position:relative}
.bottom a.on{color:var(--pri);font-weight:700;box-shadow:inset 0 3px 0 var(--pri)}.ni{font-size:1.3rem;line-height:1}
.dot{position:absolute;top:4px;right:18%;background:var(--bad);color:#fff;border-radius:10px;min-width:18px;height:18px;font-size:.7rem;display:grid;place-items:center;padding:0 4px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;margin:12px 0;box-shadow:var(--shadow)}
.card.hero{background:linear-gradient(135deg,var(--card),var(--anim-bg))}.center{text-align:center}.row.center{justify-content:center}
.muted{color:var(--muted)}.small{font-size:.85rem}.good{color:var(--good);font-weight:600}.bad{color:var(--bad);font-weight:600}.xp{font-size:1.6rem;font-weight:800;color:var(--acc)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:48px;min-width:48px;padding:10px 16px;border-radius:12px;border:2px solid var(--pri);background:var(--pri);color:var(--pri-fg);font:inherit;font-weight:600;cursor:pointer;text-decoration:none;touch-action:manipulation}
.btn.ghost{background:transparent;color:var(--pri)}.btn.small{min-height:40px;padding:6px 12px;font-size:.9rem}.btn.big{width:100%;min-height:54px;font-size:1.05rem;margin-top:8px}
.btn.icon{padding:8px;font-size:1.1rem}.btn.danger{background:var(--bad);border-color:var(--bad);color:#fff}.btn:disabled{opacity:.45;cursor:not-allowed}.btn[hidden]{display:none}
.btn.on{background:var(--acc);color:#fff;border-color:var(--acc)}
.link{background:none;border:none;color:var(--pri);font:inherit;text-decoration:underline;padding:8px 4px;min-height:40px;cursor:pointer}
button.link{padding:4px}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:8px 0}.row.between{justify-content:space-between}.row.nav{margin-top:14px}.row.nav .btn.big{flex:1;margin-top:0}
.chip{display:inline-block;padding:2px 10px;border-radius:99px;background:var(--anim-bg);border:1px solid var(--line);font-size:.8rem;white-space:nowrap}.chip.hot{background:#ffe9d1;color:#7a3b00;border-color:#f3b979}.chip.off{background:#fff3c4;color:#5a4500}
.chips{gap:6px}.lvl{font-weight:700;color:var(--acc)}
input[type=text],input[type=search],input[type=password],textarea,select,input:not([type]){width:100%;font:inherit;padding:10px 12px;border:2px solid var(--line);border-radius:10px;background:var(--bg);color:var(--fg);min-height:48px}
textarea{resize:vertical}label{display:block;font-weight:600;margin:.5em 0}label.chk{display:flex;gap:10px;align-items:flex-start;font-weight:400;min-height:44px;padding:6px 0}
input[type=checkbox],input[type=radio]{width:24px;height:24px;flex:none;margin-top:2px}input[type=range]{width:100%;min-height:36px}
fieldset{border:1px solid var(--line);border-radius:10px;margin:10px 0}legend{font-weight:700;padding:0 6px}
.field{margin:10px 0}.field>label{margin-bottom:4px}
.xpbar,.prog{height:10px;border-radius:6px;background:var(--line);overflow:hidden;margin:6px 0}.xpbar i{display:block;height:100%;background:var(--acc)}
.prog{display:flex;gap:3px;background:none;height:8px}.prog i{flex:1;background:var(--line);border-radius:4px}.prog i.done{background:var(--good)}.prog i.cur{background:var(--pri)}
.track{background:var(--card);border:1px solid var(--line);border-radius:14px;margin:10px 0;padding:0 12px}.track.locked{opacity:.65}
.track summary{display:flex;align-items:center;gap:10px;min-height:56px;cursor:pointer;list-style:none;font-weight:700}.track summary::-webkit-details-marker{display:none}
.tn{background:var(--pri);color:var(--pri-fg);border-radius:8px;padding:2px 8px;font-size:.85rem}.tt{flex:1}.tp{font-size:.85rem;color:var(--muted)}
.lessons{list-style:none;padding:0;margin:0 0 10px}.lesson-li{border-top:1px solid var(--line)}
.li{display:flex;align-items:center;gap:10px;min-height:52px;padding:6px 0;text-decoration:none;color:var(--fg);flex-wrap:wrap}.li.dis{color:var(--muted)}.li-t{flex:1;min-width:50%}.li-ic{width:1.6em;text-align:center}
.lesson-li.done .li-ic{color:var(--good);font-weight:800}.lesson-li.gate .li-t{font-weight:700}.lesson-li.soon{opacity:.6}
.review-nudge{display:block;text-decoration:none;font-weight:700;color:var(--fg);border-color:var(--acc)}
.kenya{background:var(--anim-bg);border-left:4px solid var(--c-g);padding:8px 10px;border-radius:8px;margin:10px 0}
.instr p{margin:.4em 0}.hint{background:#fff7d6;color:#4a3b00;padding:8px 10px;border-radius:8px}.fb{margin:8px 0}.ans{background:var(--anim-bg);padding:6px 10px;border-radius:8px;margin:6px 0;word-break:break-word}
.checklist .chk{border-bottom:1px dashed var(--line)}.code{font-family:ui-monospace,Consolas,monospace;background:var(--anim-bg);padding:2px 8px;border-radius:6px;font-weight:700;letter-spacing:.05em}
.big-emoji{font-size:3.5rem}blockquote{margin:6px 0;padding:6px 12px;border-left:4px solid var(--line);color:var(--muted)}
.plist{display:grid;gap:8px}.plbtn{justify-content:flex-start}.av-big{font-size:1.8rem}.avatars{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}.av{font-size:1.6rem;width:52px;height:52px;border-radius:12px;border:2px solid var(--line);background:var(--card);cursor:pointer}.av.on{border-color:var(--pri);background:var(--anim-bg)}
.badges{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:8px}.badge{display:flex;flex-direction:column;align-items:center;text-align:center;padding:8px;border:1px solid var(--line);border-radius:12px;opacity:.7}.badge.on{opacity:1;border-color:var(--c-y)}
.cert{max-width:100%;height:auto;border:1px solid var(--line);margin:8px 0}.certbox{margin:8px 0}
.journal{list-style:none;padding:0}.journal li{border-top:1px solid var(--line);padding:6px 0}.subrow{border-top:1px solid var(--line);padding:8px 0}.pod{border-top:1px solid var(--line);padding-top:6px}
.qr-box svg{width:100%;max-width:300px;height:auto;border:8px solid #fff;background:#fff}.qr-wrap{text-align:center}.share textarea{font-family:monospace;font-size:.75rem}
/* toasts / modal */
#toasts{position:fixed;left:8px;right:8px;bottom:84px;z-index:60;display:flex;flex-direction:column;gap:6px;align-items:center;pointer-events:none}
.toast{pointer-events:auto;background:#222b39;color:#fff;border-radius:12px;padding:10px 14px;display:flex;gap:10px;align-items:center;max-width:520px;box-shadow:0 4px 14px rgba(0,0,0,.3)}.toast .btn{background:#fff;color:#1b5fb4;border-color:#fff}
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.55);display:grid;place-items:center;z-index:80;padding:16px}.modal{background:var(--card);border-radius:14px;padding:16px;max-width:420px;width:100%}
.confetti{position:fixed;inset:0;pointer-events:none;overflow:hidden;z-index:70}.confetti i{position:absolute;top:-12px;width:9px;height:14px;border-radius:2px;animation:fall 2s ease-in forwards}
@keyframes fall{to{transform:translateY(105vh) rotate(540deg);opacity:.9}}
/* animation engine */
.anim-svg{width:100%;height:auto;display:block;border-radius:10px;border:1px solid var(--line)}.anim-cap{min-height:3.2em;font-weight:500;margin:8px 0 4px}
.anim-ctl{display:flex;gap:6px;align-items:center;flex-wrap:wrap}.anim-count{margin-left:auto;color:var(--muted);font-size:.85rem}.anim-dots{display:flex;gap:5px;justify-content:center;margin:6px 0}.anim-dots i{width:8px;height:8px;border-radius:50%;background:var(--line)}.anim-dots i.on{background:var(--pri)}
.an{animation:an-in .45s both}.an-move{animation-name:an-mv}.an-pop{animation-name:an-pop;transform-box:fill-box;transform-origin:center}
@keyframes an-in{from{opacity:0}to{opacity:1}}@keyframes an-mv{from{opacity:0;transform:translate(var(--dx),var(--dy))}to{opacity:1;transform:none}}@keyframes an-pop{from{opacity:0;transform:scale(.4)}to{opacity:1;transform:none}}
.hl{animation:an-in .4s both,pulse 1.2s ease-in-out .6s infinite}@keyframes pulse{50%{stroke-opacity:.25}}.ripple{animation:rip 1.1s ease-out infinite;transform-box:fill-box;transform-origin:center}@keyframes rip{from{transform:scale(1);opacity:1}to{transform:scale(3);opacity:0}}
/* sims */
.sim{border:2px dashed var(--line);border-radius:12px;padding:8px;margin:10px 0;background:var(--card)}.sim-tag{font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:4px}.sim-tag.warn{color:var(--bad);font-weight:700}
.fm-bar,.de-bar,.br-bar2{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0}.fm-crumbs{font-size:.9rem}.fm-list{list-style:none;padding:0;margin:0;border:1px solid var(--line);border-radius:10px;max-height:260px;overflow:auto}
.fm-item{display:flex;align-items:center;border-bottom:1px solid var(--line)}.fm-item.sel{background:var(--anim-bg)}.fm-item.cut{opacity:.5}.fm-row{flex:1;display:flex;gap:8px;align-items:center;min-height:48px;padding:4px 8px;background:none;border:none;color:var(--fg);font:inherit;text-align:left;cursor:pointer}.fm-name{flex:1;word-break:break-all}.fm-sz{color:var(--muted);font-size:.8rem}.fm-empty{padding:12px;color:var(--muted)}
.ss-bar{display:flex;gap:6px;align-items:center}.ss-name{min-width:2.5em;font-weight:700;text-align:center}.ss-wrap{overflow:auto;max-width:100%;border:1px solid var(--line);margin:6px 0}.ss-grid{border-collapse:collapse;font-size:.85rem;width:100%}
.ss-grid th{background:var(--anim-bg);padding:4px;min-width:30px;font-weight:600}.ss-cell{border:1px solid var(--line);min-width:58px;height:40px;padding:2px 4px;white-space:nowrap;overflow:hidden;max-width:90px;text-overflow:ellipsis;cursor:cell}.ss-cell.num{text-align:right}.ss-cell.sel{outline:3px solid var(--pri);outline-offset:-2px;background:var(--anim-bg)}.ss-cell.err{color:var(--bad)}.ss-cell.lock{background:var(--anim-bg)}
.de-page{min-height:140px;border:1px solid var(--line);border-radius:8px;padding:10px;background:#fff;color:#111}.de-page:empty:before{content:attr(data-ph);color:#777}.de-page h1{font-size:1.4rem}.de-b{font-weight:700}
.br-bar{display:flex;gap:4px;align-items:center}.br-addr{flex:1;min-width:0;min-height:44px;font-size:.85rem}.br-page{border:1px solid var(--line);border-radius:8px;padding:10px;background:#fff;color:#111;max-height:340px;overflow:auto}.br-page a{color:#1a0dab}.br-real{font-size:.75rem;color:#8a1c1c;word-break:break-all}.br-lock{font-size:1rem}
.br-linkwrap{margin:8px 0}.br-link{display:inline-block;min-height:32px}.br-res{margin:10px 0}.br-resurl{color:#0b6b2c;font-size:.8rem;word-break:break-all}.br-img{padding:18px;text-align:center;border-radius:6px;margin:8px 0;color:#222}.br-mail{border:1px solid #ccc;padding:8px;border-radius:6px}.br-mailhead{background:#f0f0f0;padding:6px;border-radius:4px;margin-bottom:6px}.br-form label{color:#111}.br-page input{background:#fff;color:#111}.br-dom{background:#e8f1ff;color:#102a43;padding:6px 8px;border-radius:6px;margin:6px 0}.br-search{display:flex;gap:6px}
.ph-frame{border:3px solid #333;border-radius:18px;background:#fff;color:#111;max-width:360px;margin:0 auto;overflow:hidden}.ph-frame.dark{background:#16181d;color:#eee}.ph-status{display:flex;justify-content:space-between;padding:4px 12px;background:#222;color:#fff;font-size:.78rem}
.ph-head{display:flex;align-items:center;gap:6px;padding:6px 8px;border-bottom:1px solid #ccc}.ph-body{padding:6px 10px;min-height:240px;max-height:380px;overflow:auto}.ph-row{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 0;border-bottom:1px solid rgba(128,128,128,.25);min-height:52px}.ph-lab{flex:1}
.ph-frame .muted{color:#667}.ph-frame.dark .muted{color:#aab}.ph-frame .btn.ghost{color:#1b5fb4}.ph-frame.dark .btn.ghost{color:#8ab8ff}.ph-frame select,.ph-frame input{background:#fff;color:#111}
.ph-menu,.ph-net{display:block;width:100%;text-align:left;min-height:50px;padding:8px;background:none;border:none;border-bottom:1px solid rgba(128,128,128,.25);font:inherit;color:inherit;cursor:pointer}.ph-net.on{font-weight:700;color:#1a7f37}
.sw{width:54px;height:32px;border-radius:16px;border:2px solid #888;background:#bbb;position:relative;cursor:pointer;flex:none;padding:0}.sw i{position:absolute;top:2px;left:2px;width:24px;height:24px;border-radius:50%;background:#fff;transition:left .15s}.sw.on{background:#1b5fb4;border-color:#1b5fb4}.sw.on i{left:24px}.sw:disabled{opacity:.4}
.ph-bar{width:110px;height:10px;background:#ccc;border-radius:5px;overflow:hidden;flex:none}.ph-bar i{display:block;height:100%;background:#1a7f37}.ph-bar i.hi{background:#c62828}
.pp textarea{min-height:110px}.pp-meter{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:6px}.pp-meter li{padding:2px 10px;border-radius:99px;border:1px solid var(--line);font-size:.85rem}.pp-meter li.ok{background:var(--c-g);color:#fff;border-color:var(--c-g)}.pp-meter li.score{font-weight:700}
.pp-out{white-space:pre-wrap;background:var(--anim-bg);padding:10px;border-radius:8px;min-height:60px;font-family:inherit;margin:4px 0}.pp-order{list-style:none;padding:0}.pp-card{display:flex;gap:6px;align-items:center;border:1px solid var(--line);border-radius:10px;padding:4px 8px;margin:6px 0;background:var(--bg)}.pp-t{flex:1}.pp-n{font-weight:800;color:var(--pri)}
.pp-logrow{padding:4px 0;border-bottom:1px solid var(--line)}.pp-ask{background:#fff3c4;color:#4a3b00;padding:8px;border-radius:8px}.pp-steps li{display:list-item}
.sl-strip{display:flex;gap:6px;flex-wrap:wrap}.sl-th{min-width:44px;min-height:44px;border:2px solid var(--line);border-radius:8px;background:var(--card);color:var(--fg);font-weight:700}.sl-th.on{border-color:var(--pri)}.sl-prev{aspect-ratio:16/9;background:#fff;color:#111;border:1px solid var(--line);border-radius:8px;padding:10px;margin:8px 0;overflow:auto}.sl-prev h3{margin-top:0}
@media (prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.sw i{transition:none}}
@media print{body *{visibility:hidden}.certbox,.certbox *{visibility:visible}.certbox{position:absolute;left:0;top:0;width:100%}.certbox .row,.certbox p{display:none}}
@media (min-width:600px){.plist{grid-template-columns:1fr 1fr}}