:root{--bg:#ffffff;--card:#ffffff;--txt:#0f172a;--mut:#5b6b82;--line:#e2e8f0;--gray:#f1f5f9;--heading:#0b2545;
--primary:#0b2545;--side:#0b2545;--ok:#0f766e;--teal:#0d9488;--red:#b91c1c;--focus:#0d9488}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0e1a2c;--card:#15243b;--txt:#e6edf7;--mut:#9fb0c8;--line:#26364f;--gray:#1d2c45;--heading:#e6edf7;
--primary:#2f5d9e;--side:#07111f;--ok:#0f766e;--teal:#2dd4bf;--red:#f87171;--focus:#5eead4;color-scheme:dark}}
:root[data-theme="dark"]{--bg:#0e1a2c;--card:#15243b;--txt:#e6edf7;--mut:#9fb0c8;--line:#26364f;--gray:#1d2c45;--heading:#e6edf7;
--primary:#2f5d9e;--side:#07111f;--ok:#0f766e;--teal:#2dd4bf;--red:#f87171;--focus:#5eead4;color-scheme:dark}
*{box-sizing:border-box}body{margin:0;font:16px/1.5 system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--txt);background:var(--bg)}
button,input,select,textarea{font:inherit}h1{font-size:1.5rem;margin:0 0 .25rem;color:var(--heading)}h2{font-size:1.1rem;margin:0}
.shell{display:flex;min-height:100vh}.side{width:230px;background:var(--side);color:#fff;padding:1.25rem .75rem;display:flex;flex-direction:column;gap:.25rem;position:sticky;top:0;height:100vh;flex-shrink:0}
.brand{font-weight:700;font-size:1.05rem;padding:0 .75rem 1rem}.nav{background:none;border:0;color:#cbd5e1;text-align:left;padding:.65rem .75rem;border-radius:8px;cursor:pointer}
.nav:hover{background:#ffffff14}.nav[aria-current=page]{background:var(--ok);color:#fff}
main{flex:1;min-width:0;padding-block:1.5rem 6rem;padding-left:max(24px,env(safe-area-inset-left,0px));padding-right:max(24px,env(safe-area-inset-right,0px));max-width:1008px;width:100%;margin:0 auto}
.sync{margin-top:auto;font-size:.8rem;color:#cbd5e1;padding:.5rem .75rem}.sync.err{color:#fca5a5}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:.75rem;margin:1rem 0}
.card{border:1px solid var(--line);border-radius:10px;padding:1rem;background:var(--card);min-width:0}
.stat b{display:block;font-size:1.6rem;color:var(--heading)}.stat span,.mut{color:var(--mut);font-size:.875rem}
.list{display:grid;gap:.75rem;margin-top:1rem}.row{display:flex;gap:.5rem;flex-wrap:wrap;align-items:center;justify-content:space-between}
.bar{display:flex;gap:.5rem;flex-wrap:wrap;margin:1rem 0}.bar input,.bar select{flex:1;min-width:140px}
input,select,textarea{width:100%;padding:.6rem .75rem;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--txt)}
:focus-visible{outline:3px solid var(--focus);outline-offset:1px}label{display:block;font-weight:600;font-size:.9rem;margin:.75rem 0 .25rem}
.btn{background:var(--primary);color:#fff;border:0;border-radius:8px;padding:.6rem 1rem;cursor:pointer;min-height:44px}.btn.alt{background:var(--gray);color:var(--txt)}
.btn.ok{background:var(--ok);color:#fff}.btn.del{background:var(--card);color:var(--red);border:1px solid var(--red)}.btn.sm{padding:.35rem .7rem;min-height:36px;font-size:.875rem}.btn[disabled]{opacity:.5;cursor:not-allowed}
.dot{display:inline-block;width:12px;height:12px;border-radius:50%;margin-right:.4rem}.tag{background:var(--gray);border-radius:99px;padding:.1rem .6rem;font-size:.8rem}
.empty{border:2px dashed var(--line);border-radius:12px;padding:2rem;text-align:center;color:var(--mut)}
.auth{max-width:380px;margin:8vh auto;padding:1.5rem;width:calc(100% - 2*max(16px,env(safe-area-inset-left,0px)))}.err-msg{color:var(--red);font-size:.9rem;min-height:1.2em}
a{color:var(--ok)}
dialog{border:0;border-radius:12px;padding:1.25rem;width:min(480px,94vw);max-height:90vh;background:var(--card);color:var(--txt)}dialog::backdrop{background:#0b254599}
#toast{position:fixed;left:50%;bottom:calc(5.5rem + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--primary);color:#fff;padding:.6rem 1rem;border-radius:8px;display:none;z-index:99;max-width:90vw}
#toast.err{background:#b91c1c}#toast.on{display:block}
@media(max-width:760px){.shell{display:block}.side{position:fixed;bottom:0;top:auto;left:0;right:0;width:auto;height:auto;flex-direction:row;padding:.4rem;padding-bottom:calc(.4rem + env(safe-area-inset-bottom,0px));padding-left:max(.4rem,env(safe-area-inset-left,0px));padding-right:max(.4rem,env(safe-area-inset-right,0px));z-index:5}
.brand,.sync{display:none}.nav{flex:1;text-align:center;padding:.6rem .2rem;font-size:.85rem}main{padding-block:1rem 6rem;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
[hidden]{display:none!important}progress{width:100%;accent-color:var(--ok);margin-top:.5rem}
.vh{position:absolute;left:0;top:0;width:1px;height:1px;opacity:0;overflow:hidden}.filebtn{display:inline-flex;align-items:center;position:relative;cursor:pointer}.filebtn:focus-within{outline:3px solid var(--focus);outline-offset:1px}
.optrow{display:grid;grid-template-columns:auto auto minmax(0,1fr) auto;gap:.5rem;align-items:start;margin:.6rem 0}.optrow input[type=radio]{width:auto;margin-top:.8rem}.optrow b{margin-top:.55rem}.optrow input:not([type=radio]){margin-bottom:.35rem}
fieldset{border:1px solid var(--line);border-radius:10px;margin:1rem 0;padding:.25rem 1rem 1rem;min-width:0}legend{font-weight:600;padding:0 .4rem}.crow{display:grid;grid-template-columns:minmax(0,1fr) 90px auto;gap:.5rem;margin:.4rem 0}
label.inl{display:inline-flex;gap:.5rem;align-items:center;margin-right:1.5rem;font-weight:400}label.inl input{width:auto}
@media(max-width:760px){.nav{font-size:.78rem}.optrow{grid-template-columns:auto minmax(0,1fr) auto}.optrow b{display:none}.crow{grid-template-columns:minmax(0,1fr) 70px auto}}
.tabs{display:flex;gap:.25rem;flex-wrap:wrap;margin-top:.75rem;border-bottom:1px solid var(--line)}.tab{background:none;border:0;border-bottom:3px solid transparent;color:var(--mut);padding:.6rem .9rem;cursor:pointer;min-height:44px}.tab[aria-selected=true]{color:var(--heading);border-bottom-color:var(--ok);font-weight:600}
.chips{display:flex;flex-wrap:wrap;gap:.35rem;margin:.75rem 0}.chip{min-width:40px;min-height:40px;border-radius:8px;border:1px solid var(--line);background:var(--card);color:var(--txt);cursor:pointer}.chip.ans{background:var(--ok);color:#fff;border-color:var(--ok)}.chip.flag{border:2px solid #d97706}.chip.cur{outline:3px solid var(--focus);outline-offset:1px}
.opts{display:grid;gap:.5rem;margin:.75rem 0}.opt{display:flex;gap:.6rem;align-items:flex-start;border:1px solid var(--line);border-radius:10px;padding:.7rem .8rem;cursor:pointer;font-weight:400;margin:0;background:var(--bg)}.opt input{width:auto;margin-top:.3rem}.opt.right{border-color:var(--ok);background:rgba(15,118,110,.14);background:color-mix(in srgb,var(--ok) 14%,var(--bg))}.opt.wrong{border-color:var(--red);background:rgba(185,28,28,.12);background:color-mix(in srgb,var(--red) 12%,var(--bg))}
.fb{border-radius:10px;padding:.75rem 1rem;margin-top:1rem;background:var(--gray)}.fb.right{border-left:4px solid var(--ok)}.fb.wrong{border-left:4px solid var(--red)}
.tbl{border-collapse:collapse;width:100%;min-width:560px;font-size:.9rem}.tbl th,.tbl td{border-bottom:1px solid var(--line);padding:.5rem;text-align:left;vertical-align:top}.bigclk{font-size:3rem;font-variant-numeric:tabular-nums;margin:.5rem 0;color:var(--heading)}
.side{overflow-x:auto}details>summary{cursor:pointer}
@media(max-width:760px){.nav{flex:0 0 auto;padding:.6rem .7rem}}
.chart{width:100%;height:auto;display:block}.chart text{fill:var(--mut);font-size:11px}.chart .gl{stroke:var(--line);stroke-width:1}.chart .ln{fill:none;stroke:var(--heading);stroke-width:2.5}.chart .dot{fill:var(--teal);stroke:var(--bg);stroke-width:1.5}.chart .br{fill:var(--teal)}
.hb{margin:.6rem 0}.hbt{height:10px;border-radius:5px;background:var(--gray);overflow:hidden;margin-top:.25rem}.hbf{height:100%;background:var(--teal)}details>summary{margin-top:.5rem;color:var(--mut)}
#offbar{position:sticky;top:0;z-index:60;background:var(--red);color:#fff;padding:.5rem 1rem;text-align:center;font-size:.9rem}#offbar[hidden]{display:none}
input[type=color]{height:44px;padding:4px;cursor:pointer}

.brand .tag{display:block;font-size:.68rem;font-weight:400;opacity:.8;margin-top:.1rem}