:root{--navy:#14284b;--navy2:#1d3a6b;--bg:#eef1f6;--card:#fff;--line:#dfe3ea;--muted:#6b7280;--text:#1f2937;
--green:#16a34a;--greenbg:#dcf3e2;--greenline:#22a046;--red:#dc2626;--redbg:#f9dcdc;--redline:#e05a5a;--amber:#d97706}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--text);font:14px/1.55 "Segoe UI",system-ui,-apple-system,Roboto,sans-serif}
button{font:inherit;cursor:pointer}
a{color:var(--navy2)}
.loading{padding:40px;text-align:center;color:var(--muted)}
/* ---------- home ---------- */
.home{max-width:1100px;margin:0 auto;padding:24px 18px 60px}
.brand{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:18px}
.brand h1{margin:0;font-size:22px;color:var(--navy)}
.brand small{color:var(--muted)}
.toolbar{display:flex;gap:8px;flex-wrap:wrap}
.btn{border:1px solid var(--line);background:#fff;border-radius:8px;padding:7px 12px;color:var(--text)}
.btn:hover{border-color:#b8c0cc}
.btn.primary{background:var(--navy);border-color:var(--navy);color:#fff}
.btn.danger{color:var(--red)}
.btn:disabled{opacity:.45;cursor:default}
h2.group{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:26px 0 10px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;box-shadow:0 1px 2px rgba(16,24,40,.04)}
.sec{cursor:pointer;display:flex;flex-direction:column;gap:6px;text-align:left}
.sec:hover{border-color:var(--navy2);box-shadow:0 2px 8px rgba(20,40,75,.12)}
.sec .t{font-weight:600;color:var(--navy);font-size:15px}
.sec .m{color:var(--muted);font-size:12.5px}
.sec.off{cursor:default;opacity:.55}.sec.off:hover{border-color:var(--line);box-shadow:none}
.bar{height:5px;background:#e6e9ef;border-radius:3px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--navy2)}
.resume{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;background:var(--navy);color:#fff;border-radius:12px;padding:14px 16px}
.resume .btn{background:#fff;color:var(--navy);border:0;font-weight:600}
/* ---------- quiz layout ---------- */
.quiz{display:flex;min-height:100vh}
.side{width:178px;flex:none;background:#fff;border-right:1px solid var(--line);padding:14px 10px;position:sticky;top:0;height:100vh;overflow:auto}
.side h4{margin:0 0 10px;font-size:11px;letter-spacing:.05em;text-transform:uppercase;color:#475569}
.side .jump{width:100%;background:var(--navy);color:#fff;border:0;border-radius:6px;padding:7px 6px;font-size:12px;font-weight:600}
.side .lbl{display:flex;justify-content:space-between;font-size:11.5px;font-weight:600;color:var(--navy);margin:16px 0 6px}
.side .none{font-size:11px;color:var(--muted);font-style:italic}
.nums{display:grid;grid-template-columns:repeat(6,1fr);gap:4px}
.nums button{border:1px solid var(--line);background:#fff;border-radius:4px;font-size:10.5px;padding:3px 0;color:#475569}
.nums button.ok{background:var(--greenbg);border-color:var(--greenline);color:#14532d}
.nums button.bad{background:var(--redbg);border-color:var(--redline);color:#7f1d1d}
.nums button.ans{background:#e5ebf6;border-color:#9fb0d0}
.nums button.cur{background:var(--red);border-color:var(--red);color:#fff;font-weight:700}
.nums button.flag{box-shadow:inset 0 -3px 0 var(--amber)}
.main{flex:1;min-width:0;padding:18px 18px 70px;display:flex;flex-direction:column;align-items:center;gap:14px}
.main>.card{width:100%;max-width:560px}
.head h3{margin:0 0 10px;color:var(--navy);font-size:17px;display:flex;align-items:center;gap:8px}
.head h3 .home-link{border:0;background:none;color:var(--muted);font-size:18px;padding:0 4px}
.row{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:7px;overflow:hidden}
.seg button{border:0;background:#fff;padding:4px 10px;font-size:12px;color:#334155}
.seg button.on{background:var(--navy);color:#fff}
.icon{border:1px solid var(--line);background:#fff;border-radius:6px;width:28px;height:26px;font-size:13px;padding:0}
.icon.on{background:#fff4d6;border-color:var(--amber)}
.stats{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0 8px}
.stats span{border:1px solid var(--line);border-radius:6px;padding:3px 8px;font-size:11.5px;color:#475569}
.stats b{color:var(--text)}
.qhead{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.pill{background:var(--navy);color:#fff;font-size:10.5px;font-weight:700;letter-spacing:.05em;border-radius:20px;padding:3px 10px}
.qno{color:var(--muted);font-weight:600;font-size:12.5px;margin-bottom:6px}
.stem{font-size:14px;margin:0 0 14px;white-space:pre-wrap}
.opt{display:flex;gap:10px;align-items:flex-start;width:100%;text-align:left;background:#fff;border:1px solid var(--line);border-radius:8px;padding:10px 12px;margin-bottom:8px;color:var(--text);font-size:13px}
.opt:hover:not(:disabled){border-color:#9fb0d0;background:#f8fafd}
.opt:disabled{cursor:default}
.opt .L{flex:none;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:11.5px;font-weight:700;color:#64748b;background:#f1f4f8}
.opt.sel{border-color:var(--navy2);background:#eef3fb}.opt.sel .L{background:var(--navy2);color:#fff}
.opt.ok{background:var(--greenbg);border-color:var(--greenline)}.opt.ok .L{background:var(--green);color:#fff}
.opt.bad{background:var(--redbg);border-color:var(--redline)}.opt.bad .L{background:var(--red);color:#fff}
.fb{border-top:1px dashed #cfd6e0;margin-top:14px;padding-top:12px}
.fb h5{margin:12px 0 4px;font-size:12.5px;color:var(--navy)}
.fb p{margin:0 0 6px;font-size:13px;white-space:pre-wrap}
.badge{display:inline-flex;align-items:center;gap:6px;background:var(--greenbg);color:#15803d;border:1px solid #a7dcb6;border-radius:6px;padding:4px 10px;font-weight:700;font-size:13px;margin:10px 0 4px}
.badge.wrong{background:var(--redbg);color:#b91c1c;border-color:#efb3b3}
.po{border:1px solid var(--line);background:#f8fafc;border-radius:7px;padding:8px 10px;margin:6px 0;font-size:12.5px}
.po.ok{background:var(--greenbg);border-color:var(--greenline)}
.po b{color:#475569}.po.ok b{color:#15803d}
.tp{border-left:3px solid var(--navy);background:#f5f7fb;border-radius:0 6px 6px 0;padding:8px 10px}
.cherry{background:#fff6f6;border:1px solid #f5c9c9;border-radius:8px;padding:8px 10px}
.nav{display:flex;justify-content:space-between;align-items:center;margin-top:16px;gap:8px}
.shots{margin-top:12px;font-size:12px;color:var(--muted)}
.shots img{max-width:100%;border:1px solid var(--line);border-radius:6px;margin-top:6px}
.note{font-size:12px;color:var(--muted)}
.hint{font-size:12px;color:var(--muted);margin-top:8px}
.testbar{display:flex;justify-content:space-between;align-items:center;gap:8px;background:#fff8e6;border:1px solid #f3d38a;border-radius:8px;padding:8px 10px;margin-top:10px;font-size:12.5px}
mark{background:#fff3a3;padding:0 1px}
.menu-btn{display:none}
/* ---------- tools pages ---------- */
.page{max-width:900px;margin:0 auto;padding:22px 18px 60px}
.page h2{color:var(--navy);margin:0 0 12px}
table{border-collapse:collapse;width:100%;font-size:12.5px;background:#fff}
td,th{border:1px solid var(--line);padding:5px 8px;text-align:left}
th{background:#f3f5f9}
.okc{color:var(--green);font-weight:600}.badc{color:var(--red);font-weight:600}
pre.log{background:#0f172a;color:#e2e8f0;padding:10px;border-radius:8px;font-size:12px;max-height:340px;overflow:auto;white-space:pre-wrap}
@media (max-width:760px){
 .side{position:fixed;left:0;top:0;z-index:20;transform:translateX(-100%);transition:transform .2s;box-shadow:4px 0 16px rgba(0,0,0,.15)}
 .side.open{transform:none}
 .menu-btn{display:inline-block}
 .main{padding:10px 8px 60px}
}
/* ---------- v2 additions ---------- */
html{-webkit-text-size-adjust:100%}
body{padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}
.resume.warn{background:#8a4b00}
.quick{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:14px 0 4px}
.mini{display:flex;flex-direction:column;gap:2px;padding:10px 12px;text-align:left}
.mini b{font-size:20px;color:var(--navy)}.mini span{font-size:12px;color:var(--muted)}
.mini.act{cursor:pointer}.mini.act:hover{border-color:var(--navy2)}
.foot{margin-top:30px;font-size:12px;color:var(--muted)}
.actions{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}
.btn.sm{padding:4px 9px;font-size:12px}
.subs{margin-top:6px}.subs td:nth-child(n+2){white-space:nowrap}
.page h3{color:var(--navy);margin:22px 0 8px;font-size:15px}
.subl{font-size:11.5px;color:#6d5a1f;background:#fbf4dc;border:1px solid #eedfa8;display:inline-block;border-radius:5px;padding:1px 8px;margin:0 0 8px}
.retry{display:flex;gap:10px;align-items:center;margin:4px 0 0}
.po.picked{background:var(--redbg);border-color:var(--redline)}
.nums button.skip{background:#f3f4f6;border-style:dashed}
.testbar .late,#clock.late{color:var(--red)}
.form label{display:block;margin:10px 0}.form input,.form select{font:inherit;padding:6px 8px;border:1px solid var(--line);border-radius:6px;margin-left:6px}
.searchbar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:14px}
.searchbar input[type=search]{flex:1 1 260px;font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:8px}
.searchbar select{font:inherit;padding:7px;border:1px solid var(--line);border-radius:8px;max-width:220px}
.chk{font-size:12.5px;color:#475569;display:inline-flex;gap:5px;align-items:center}
.hit{display:flex;flex-direction:column;gap:3px;margin-bottom:8px;text-decoration:none;color:var(--text)}
.hit:hover{border-color:var(--navy2)}.hit .m{font-size:11.5px;color:var(--muted)}
.chart{display:flex;align-items:flex-end;gap:6px;height:150px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 10px 4px}
.chart .col{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;gap:3px}
.chart .b{width:100%;max-width:26px;background:#cdd6e6;border-radius:3px 3px 0 0;display:flex;flex-direction:column;justify-content:flex-end;min-height:1px}
.chart .g{background:var(--green);border-radius:3px 3px 0 0}
.chart span{font-size:10px;color:var(--muted)}.chart .n{font-style:normal;font-size:10px;color:#475569}
.bar.inl{display:inline-block;width:90px;vertical-align:middle}
input.wide{width:100%;padding:6px;font:inherit;border:1px solid var(--line);border-radius:6px}
.scrim{display:none}
.head h3 span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.figure,.media img{max-width:100%}
@media (max-width:760px){
 .quick{grid-template-columns:repeat(2,1fr)}
 .hide-s{display:none}
 .main>.card{max-width:none}
 .scrim.on{display:block;position:fixed;inset:0;background:rgba(0,0,0,.25);z-index:15}
 .side{padding-top:calc(14px + env(safe-area-inset-top))}
 .opt{padding:12px;font-size:14px}
 .stem{font-size:15px}
 .nav .btn{padding:10px 16px}
 .grid{grid-template-columns:1fr 1fr}
 .sec .t{font-size:14px}
}
@media (min-width:761px) and (max-width:1100px){ .main>.card{max-width:640px} }
@media (prefers-color-scheme:dark){
 :root{--bg:#0f1420;--card:#171d2b;--line:#2a3347;--muted:#93a0b6;--text:#e6eaf2;--navy:#9fb7e6;--navy2:#7f9ddb;--greenbg:#16351f;--redbg:#3b1a1a}
 .btn,.opt,.seg button,.icon,.nums button,.side,.po,table,th,.chart,.form input,.form select,.searchbar input,.searchbar select,input.wide{background:#171d2b;color:var(--text)}
 th{background:#1e2536}.btn.primary,.seg button.on,.side .jump,.pill{background:#3b5a9a;color:#fff;border-color:#3b5a9a}
 .tp{background:#1b2232}.cherry{background:#2a1b1f;border-color:#5a2d33}.subl{background:#2e2a17;border-color:#5b4f1f;color:#e8d898}
 .opt .L{background:#25304a;color:#c3cde0}.badge{background:#16351f;border-color:#2c6b3c;color:#7fdc98}.badge.wrong{color:#f19a9a;border-color:#7a3434}
 .po.ok b{color:#7fdc98}.nums button.ans{background:#26324b}.testbar{background:#3a2e12;border-color:#7a6224}
 .resume{background:#22365f;color:#fff}.resume.warn{background:#6b3b00}.resume .btn{background:#e6eaf2;color:#14284b}.mini b{color:#c8d6f5}.bar{background:#26304a}.bar i{background:#7f9ddb}
 .chart .b{background:#33405e}
 .stats span,.po b,.side h4,.nums button,.chk,.chart .n,.qno{color:#b8c2d6}.stats b{color:#fff}
 .nums button.ok{color:#bff0cb;background:#1d4a2a}.nums button.bad{color:#f6c1c1;background:#4a1f1f}
 mark{background:#6b5d12;color:#fff}
}
/* topic picker (collapsed by default) */
.topics{margin-top:6px}
.topics>summary{list-style:none;display:inline-block}
.topics>summary::-webkit-details-marker{display:none}
.topics[open]>summary{background:var(--navy);color:#fff;border-color:var(--navy)}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.chip{display:inline-flex;flex-direction:column;align-items:flex-start;gap:1px;border:1px solid var(--line);background:var(--card);color:var(--text);border-radius:8px;padding:6px 10px;font-size:12.5px;text-align:left;max-width:100%}
.chip:hover{border-color:var(--navy2)}
.chip small{color:var(--muted);font-size:11px}
@media (prefers-color-scheme:dark){.topics[open]>summary{background:#3b5a9a;border-color:#3b5a9a}.chip{background:#171d2b}}
/* calculators & tables panel */
.tools-bg{position:fixed;inset:0;background:rgba(10,15,30,.45);z-index:50;display:flex;justify-content:flex-end}
.tools-panel{width:min(640px,100%);height:100%;overflow:auto;background:var(--bg);padding:16px 16px calc(40px + env(safe-area-inset-bottom));box-shadow:-6px 0 24px rgba(0,0,0,.2);-webkit-overflow-scrolling:touch}
.tools-head{display:flex;justify-content:space-between;align-items:center;position:sticky;top:-16px;background:var(--bg);padding:6px 0;z-index:1}
.tools-head h2{margin:0;font-size:18px;color:var(--navy)}
.tg{font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:18px 0 8px}
.calc{margin-bottom:10px}.calc h4{margin:0 0 8px;color:var(--navy)}
.calc-in{display:flex;flex-wrap:wrap;gap:8px 12px;margin-bottom:8px}
.calc-in label{display:flex;flex-direction:column;font-size:12px;color:var(--muted);gap:3px;flex:1 1 150px}
.calc-in input,.calc-in select{font:inherit;padding:7px 8px;border:1px solid var(--line);border-radius:7px;background:var(--card);color:var(--text)}
.calc-out{margin-top:8px;font-size:13.5px}
.ytable{background:var(--card);border:1px solid var(--line);border-radius:10px;margin:8px 0;padding:0 12px}
.ytable summary{cursor:pointer;padding:10px 0;font-weight:600;color:var(--navy);list-style:none}
.ytable summary::-webkit-details-marker{display:none}
.ytable summary small{display:block;font-size:10.5px;letter-spacing:.06em;color:var(--muted);font-weight:600}
.ytable .tw{overflow-x:auto;padding-bottom:6px}.ytable table{font-size:12.5px}.ytable th{white-space:nowrap}
.ytable .note{margin:4px 0 12px}
.catchips{margin:10px 0}.chip.on{background:var(--navy);color:#fff;border-color:var(--navy)}
#tq{margin-top:4px}
@media (prefers-color-scheme:dark){.chip.on{background:#3b5a9a;border-color:#3b5a9a}.tools-bg{background:rgba(0,0,0,.55)}}
/* ---------- Duckland ---------- */
.brand h1{display:flex;align-items:center;gap:10px}
.brand h1 .logo{width:40px;height:40px;animation:bob 3.2s ease-in-out infinite;transform-origin:50% 90%}
.walker{position:relative;height:40px;overflow:hidden;margin:-4px 0 4px}
.family{position:absolute;bottom:2px;display:flex;align-items:flex-end;gap:2px;animation:walk 22s linear infinite}
.family svg{transform:scaleX(-1)}
.family .mama{width:34px;height:34px;animation:waddle .5s ease-in-out infinite}
.family .kid{width:17px;height:17px;animation:waddle .35s ease-in-out infinite}
.family .kid:nth-child(3){animation-delay:-.12s}.family .kid:nth-child(4){animation-delay:-.24s}
.family{flex-direction:row-reverse}
.pond{position:absolute;right:0;bottom:0;width:120px;height:22px;border-radius:50%;background:radial-gradient(ellipse at center,rgba(93,173,236,.35),rgba(93,173,236,0) 70%)}
.pond .swimmer{position:absolute;width:30px;height:30px;bottom:2px;left:40px;animation:float 2.6s ease-in-out infinite}
@keyframes walk{0%{left:-140px}100%{left:calc(100% + 20px)}}
@keyframes waddle{0%,100%{transform:scaleX(-1) rotate(0) translateY(0)}50%{transform:scaleX(-1) rotate(6deg) translateY(-2px)}}
@keyframes float{0%,100%{transform:translate(0,0) rotate(-3deg)}50%{transform:translate(-14px,-2px) rotate(3deg)}}
@keyframes bob{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-3px) rotate(-4deg)}}
.duck-pop{position:fixed;right:18px;bottom:calc(18px + env(safe-area-inset-bottom));z-index:60;pointer-events:none;display:flex;flex-direction:column;align-items:flex-end;opacity:0;transform:translateY(40px) scale(.6);transition:opacity .25s,transform .35s cubic-bezier(.3,1.6,.5,1)}
.duck-pop.show{opacity:1;transform:none}
.duck-pop .duck{width:74px;height:74px;filter:drop-shadow(0 3px 6px rgba(0,0,0,.18))}
.duck-pop.ok .duck,.duck-pop.win .duck{animation:hop .5s ease-in-out 3}
.duck-pop.bad .duck{animation:shake .45s ease-in-out 2}
.duck-pop .bubble{background:#fff;color:#1f2937;border:2px solid #FFD43B;border-radius:14px;padding:4px 10px;font-weight:700;font-size:13px;margin-bottom:4px;box-shadow:0 2px 8px rgba(0,0,0,.12)}
.duck-pop .sp{position:absolute;color:#F2B705;font-size:16px;animation:spark .9s ease-out forwards}
.duck-pop .s1{right:70px;bottom:60px}.duck-pop .s2{right:4px;bottom:78px;animation-delay:.15s}.duck-pop .s3{right:40px;bottom:96px;color:#ff6b81;animation-delay:.3s}
@keyframes hop{0%,100%{transform:translateY(0)}40%{transform:translateY(-16px) rotate(-6deg)}}
@keyframes shake{0%,100%{transform:rotate(0)}25%{transform:rotate(-12deg)}75%{transform:rotate(12deg)}}
@keyframes spark{0%{opacity:0;transform:scale(.4)}40%{opacity:1}100%{opacity:0;transform:translateY(-22px) scale(1.2)}}
.loading .duck{width:64px;height:64px;display:block;margin:0 auto 8px;animation:bob 1.2s ease-in-out infinite}
@media (prefers-reduced-motion:reduce){.walker{display:none}.brand h1 .logo,.loading .duck{animation:none}}
/* related tables under a question */
.rel{margin-top:14px;border-top:1px dashed #cfd6e0;padding-top:8px}
.rel h5{margin:6px 0}
.rel .ytable{margin:6px 0}
/* tables docked beside the question on wide screens */
@media (min-width:1180px){
 body.tools-docked .tools-bg{background:transparent;pointer-events:none;left:auto;width:min(560px,42vw)}
 body.tools-docked .tools-panel{pointer-events:auto;width:100%;border-left:1px solid var(--line)}
 body.tools-docked #app{margin-right:min(560px,42vw)}
 body.tools-docked .side{display:none}
}

/* more duck life */
.duck-pop .thumb{transform-origin:46px 44px;animation:thumbs .5s ease-in-out 3}
@keyframes thumbs{0%,100%{transform:rotate(0)}50%{transform:rotate(-14deg)}}
.duck-pop .tear{animation:tear 1.2s ease-in 2}
@keyframes tear{0%{transform:translateY(0);opacity:1}100%{transform:translateY(10px);opacity:0}}
.duck-pop .cloud{position:absolute;right:18px;bottom:84px;font-size:22px;color:#94a3b8;animation:rain 1.4s ease-in-out}
@keyframes rain{0%{opacity:0;transform:translateY(6px)}30%{opacity:1}100%{opacity:0;transform:translateY(-6px)}}
.duck-pop.bad .bubble,.duck-pop.lose .bubble{border-color:#94a3b8}
.duck-pop.party .duck{animation:dance .4s ease-in-out 6}
@keyframes dance{0%,100%{transform:rotate(-10deg) translateY(0)}50%{transform:rotate(10deg) translateY(-10px)}}
.feathers{position:fixed;inset:0;pointer-events:none;z-index:59;overflow:hidden}
.feathers i{position:absolute;top:-30px;font-style:normal;font-size:18px;animation:fall linear forwards}
@keyframes fall{to{transform:translateY(110vh) rotate(540deg)}}
.duck-peek{position:fixed;right:-10px;bottom:30%;z-index:40;width:64px;height:64px;cursor:pointer;animation:peek 6s ease-in-out forwards}
.duck-peek svg{width:64px;height:64px;transform:scaleX(-1) rotate(-20deg)}
@keyframes peek{0%{transform:translateX(80px)}15%,80%{transform:translateX(0)}50%{transform:translateX(6px)}100%{transform:translateX(80px)}}
.duckbar{position:relative;overflow:visible;margin-top:6px}
.bar-duck{position:absolute;top:-17px;width:22px;height:22px;margin-left:-11px;cursor:pointer;transition:left .6s ease}
.bar-duck svg{width:22px;height:22px;transform:scaleX(-1);animation:float 2.6s ease-in-out infinite}
.jump{animation:jumpy .6s ease!important}
@keyframes jumpy{0%,100%{transform:translateY(0)}40%{transform:translateY(-14px) rotate(-10deg)}}
@media (prefers-reduced-motion:reduce){.duck-peek,.feathers{display:none}.bar-duck svg{animation:none}}
/* Republic of Duckland ceremony */
.dlc{position:fixed;inset:0;z-index:80;background:radial-gradient(circle at 50% 40%,#7cc6ff 0%,#2f7fd6 60%,#1d4f9a 100%);overflow:hidden;display:flex;align-items:center;justify-content:center}
.dlc-army{position:absolute;inset:0;pointer-events:none}
.soldier{position:absolute;animation:march 3.2s cubic-bezier(.3,.7,.4,1) both}
.soldier svg{width:100%;height:100%;animation:waddle2 .35s ease-in-out infinite}
@keyframes march{0%{transform:translateX(calc(var(--dir) * -110vw)) scale(.6);opacity:0}15%{opacity:1}75%{transform:translateX(calc(var(--dir) * 2vw)) scale(1.05)}100%{transform:translateX(0) scale(1);opacity:.95}}
@keyframes waddle2{0%,100%{transform:rotate(-6deg) translateY(0)}50%{transform:rotate(6deg) translateY(-6px)}}
.splash{position:absolute;width:14px;height:14px;border-radius:50% 50% 50% 0;background:rgba(255,255,255,.85);transform:rotate(-45deg) scale(0);animation:splash 1.1s ease-out both}
.splash::before,.splash::after{content:"";position:absolute;width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.7);top:-10px;left:10px}
.splash::after{top:10px;left:-12px}
@keyframes splash{0%{transform:rotate(-45deg) scale(0);opacity:0}30%{opacity:1;transform:rotate(-45deg) scale(1.6)}100%{opacity:0;transform:rotate(-45deg) scale(2.4) translateY(-20px)}}
.dlc-card{position:relative;z-index:2;max-width:460px;width:calc(100% - 32px);max-height:calc(100% - 32px);overflow:auto;background:#fffdf3;color:#1f2937;border:4px solid #FFD43B;border-radius:22px;padding:22px 22px 16px;box-shadow:0 20px 60px rgba(0,0,0,.35);text-align:center;opacity:0;transform:scale(.6) rotate(-4deg);transition:opacity .4s,transform .5s cubic-bezier(.3,1.6,.5,1)}
.dlc.show-card .dlc-card{opacity:1;transform:none}
.dlc.bye .dlc-card{transform:scale(1.1);opacity:0}.dlc.bye{transition:opacity .6s;opacity:0}
.dlc-flag svg{width:84px;height:84px;margin-top:-10px;animation:dance .5s ease-in-out infinite}
.dlc-card h2{margin:4px 0 8px;font-size:17px;color:#7a5200;letter-spacing:.04em;text-transform:uppercase}
.dlc-card h2 span{font-size:24px;color:#14284b;text-transform:none;letter-spacing:0}
.dlc-decree{font-size:14px}
.dlc-id{display:grid;grid-template-columns:auto 1fr;gap:2px 10px;text-align:left;background:#fff4c2;border:1px dashed #d9a300;border-radius:10px;padding:8px 12px;margin:10px 0;font-size:13px}
.dlc-id span{color:#7a5200}
.dlc-card ul{text-align:left;font-size:13.5px;padding-left:20px;margin:6px 0 14px}
.dlc-card li{margin:4px 0}
.dlc-btn{font-size:16px;padding:12px 18px;width:100%;background:#FFB000!important;border-color:#FFB000!important;color:#1f2937!important;font-weight:700}
.dlc-fine{margin-top:10px;font-size:11.5px;color:#6b7280;text-align:left}.dlc-fine summary{cursor:pointer;text-align:center}
.dlc.calm .dlc-card{transition:none}
/* flashcards */
.sec.vocab{border-left:4px solid #FFD43B}
.art{font-weight:800}.art-der{color:#1f5fbf}.art-die{color:#c0392b}.art-das{color:#1e8449}
.ex{display:inline-block;margin-top:6px;font-size:.8em;font-weight:400;color:var(--muted);font-style:italic}
.rgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:8px;margin-bottom:6px}
.opt-r{display:flex;gap:8px;align-items:flex-start;border:1px solid var(--line);border-radius:10px;padding:8px 10px;background:var(--card);cursor:pointer}
.opt-r span{display:flex;flex-direction:column}.opt-r small{color:var(--muted);font-size:11.5px}
.opt-r:has(input:checked){border-color:var(--navy2);box-shadow:0 0 0 2px rgba(29,58,107,.15)}
.fc{max-width:620px}
.fc-top{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);margin-bottom:6px;flex-wrap:wrap}
.flip{position:relative;height:300px;perspective:1200px;margin:16px 0;cursor:pointer;outline:none}
.fc-face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:0 6px 20px rgba(20,40,75,.10);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px;text-align:center;transition:transform .5s cubic-bezier(.3,.8,.3,1)}
.fc-face.back{transform:rotateY(180deg);background:#fffdf3}
.flip.flipped .front{transform:rotateY(-180deg)}.flip.flipped .back{transform:rotateY(0)}
.fc-lang{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.fc-word{font-size:24px;font-weight:700;line-height:1.35;color:var(--text)}
.fc-hint{position:absolute;bottom:12px;font-size:11.5px;color:var(--muted)}
.fc-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px 20px;text-align:center;margin:16px 0}
.fc-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:12px}
.fc-actions .btn{padding:12px 20px;font-size:15px}.fc-actions small{opacity:.6;margin-left:6px}
.btn.good{background:var(--greenbg);border-color:var(--greenline);color:#14532d}.btn.bad{background:var(--redbg);border-color:var(--redline);color:#7f1d1d}
.fc-mc .opt{font-size:15px}
.fc-type{display:flex;gap:8px}.fc-type input{flex:1;font:inherit;font-size:17px;padding:12px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--text)}
.tres{margin:12px 0 6px;font-weight:700;font-size:15px}.tres.good{color:var(--green)}.tres.bad{color:var(--red)}
.fc-full{width:100%;background:#fffdf3;border:1px dashed #e9d27a;border-radius:12px;padding:12px;text-align:center;margin-top:8px}
.fc-full .fc-word{font-size:19px}
@media (prefers-color-scheme:dark){.fc-face.back,.fc-full{background:#232a3a;border-color:#4a4a2a}.art-der{color:#7fb0ff}.art-die{color:#ff8f80}.art-das{color:#7fdc98}.opt-r{background:#171d2b}}
@media (max-width:760px){.flip{height:260px}.fc-word{font-size:21px}}