.topbar{background:#fff;border-bottom:1px solid var(--line)}
.topbar-in{display:flex;align-items:center;gap:12px;max-width:900px;margin:0 auto;padding:0 16px}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--ink);text-decoration:none;white-space:nowrap}
.brand::before{content:"§";display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--accent);color:#fff;font-size:16px}
.adminnav{display:flex;align-items:center;gap:2px;flex:1;min-width:0;margin-left:8px}
.adminnav a,.adminnav button{min-height:44px;padding:0 12px;border:0;border-radius:8px;background:none;font:inherit;font-size:14px;line-height:44px;color:var(--muted);text-decoration:none;cursor:pointer;white-space:nowrap}
.adminnav a:hover,.adminnav button:hover{background:var(--hover);color:var(--ink)}
.adminnav a[aria-current]{color:var(--accent);font-weight:600;background:var(--accent-soft)}
.adminnav form{margin:0 0 0 auto}
.langs{display:flex;margin-left:auto}
.adminnav+.langs{margin-left:0}
.langs a{display:inline-block;min-width:44px;min-height:44px;line-height:44px;text-align:center;color:var(--muted);text-decoration:none;text-transform:uppercase;font-size:13px;border-radius:8px}
.langs a:hover{background:var(--hover)}
.langs a.on{color:var(--accent);font-weight:700;background:var(--accent-soft)}
.wrap{max-width:900px;margin:0 auto;padding:16px 16px 48px}
.card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;margin:16px 0;box-shadow:var(--shadow);min-width:0;overflow-x:auto}
.card.narrow{max-width:420px;margin:48px auto}
h1{margin:0 0 16px;font-size:1.5rem;line-height:1.25}h2{margin:0 0 12px;font-size:1.15rem}
h1,h2,h3,p,li,code,.rname,.alert,td a{overflow-wrap:anywhere}
.pagehead{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px 12px;margin-bottom:16px}.pagehead h1{margin:0}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:6px;margin-bottom:8px;font-size:14px;color:var(--muted);overflow-wrap:anywhere}
.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{color:var(--accent);text-decoration:underline}
.crumbs [aria-current]{color:var(--ink)}
label{display:block;margin-bottom:14px;font-size:14px;color:var(--muted)}
input,select,textarea{display:block;width:100%;margin-top:4px;padding:10px 12px;font:inherit;border:1px solid var(--line-strong);border-radius:8px;color:var(--ink);background:#fff}
input:disabled,select:disabled,textarea:disabled{background:var(--bg);color:var(--muted);cursor:not-allowed}
input[type=checkbox],input[type=radio]{accent-color:var(--accent)}
input[type=file]{padding:6px}
input[type=file]::file-selector-button{margin-right:10px;padding:5px 12px;border:1px solid var(--line-strong);border-radius:8px;background:#fff;font:inherit;font-size:14px;cursor:pointer}
input[type=file]::file-selector-button:hover{background:var(--hover)}
textarea{resize:vertical}
.alert,.okmsg{padding:10px 12px;border-radius:8px;border-left:3px solid currentColor}
.alert{background:var(--warn-soft);color:var(--warn)}
.okmsg{background:var(--accent-soft);color:var(--accent)}
.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.between{justify-content:space-between}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:0 16px;align-items:end}
.grid>.btn{align-self:end;justify-self:start;margin-bottom:14px}
table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);font-size:14px}
th{background:var(--bg);color:var(--muted);font-size:12px;font-weight:600;letter-spacing:.03em;text-transform:uppercase;white-space:nowrap}
tbody tr:hover{background:#fafbfc}
.badge{display:inline-block;background:var(--hover);color:var(--muted);border:1px solid transparent;border-radius:99px;padding:2px 10px;font-size:12px;font-weight:600;vertical-align:middle}
.badge[data-s=DRAFT]{background:#fff;border-color:var(--line-strong)}
.badge[data-s=OPEN],.badge[data-s=in_progress]{background:var(--info-soft);color:var(--info)}
.badge[data-s=GRADING]{background:var(--warn-soft);color:var(--warn)}
.badge[data-s=PUBLISHED],.badge[data-s=submitted]{background:var(--accent-soft);color:var(--accent)}
fieldset.plain{border:0;padding:0;margin:0;min-width:0}
.stats{display:flex;gap:8px;font-size:14px;color:var(--muted);flex-wrap:wrap;margin:0 0 12px}
.stats span{background:var(--bg);border-radius:99px;padding:4px 12px}
.qgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:8px;margin:12px 0}
.qcell{display:inline-block;text-align:center;padding:8px 0;border-radius:8px;text-decoration:none;font-weight:600;font-size:14px;color:var(--ink);border:1px solid var(--line);background:#fff}
a.qcell:hover{border-color:var(--accent)}
.qcell.ok{background:var(--accent-soft);border-color:var(--accent-line);color:var(--accent)}
.qcell.warn{background:var(--warn-soft);border-color:var(--warn-line);color:var(--warn)}
.qcell.open{border-style:dashed}
.legend .qcell{width:18px;height:18px;padding:0;margin-right:2px;vertical-align:middle}
.problems{margin:8px 0 16px;padding-left:20px;color:var(--warn);font-size:14px}
.optrow{display:flex;gap:10px;align-items:center;margin-bottom:10px}.optrow input{margin:0}
label.radio{display:flex;align-items:center;gap:6px;margin:0;color:var(--ink);white-space:nowrap}
label.radio input{width:auto;margin:0}
.partbox{border:1px solid var(--line);border-radius:var(--radius);padding:12px;margin-bottom:12px}
.imgbox{margin:12px 0 20px}.qimg{max-width:100%;max-height:260px;border-radius:8px;display:block;margin-bottom:8px}
.tablewrap{overflow-x:auto;position:relative}
code{font-family:ui-monospace,Menlo,monospace;background:var(--bg);padding:1px 6px;border-radius:4px}
.actions{white-space:nowrap}.actions form{display:inline}
.linkbtn{background:none;border:0;color:var(--accent);font:inherit;font-size:14px;cursor:pointer;padding:0 6px;border-radius:4px}
.linkbtn:hover{text-decoration:underline}
.linkbtn.danger{color:var(--danger)}
.btn.big{width:100%;text-align:center;padding:14px 18px;font-size:1.05rem}
.mt{margin-top:16px}.center{text-align:center}
.bigmark{width:64px;height:64px;margin:0 auto 12px;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-size:34px;line-height:64px;font-weight:700}
form.inline{display:inline-flex;gap:6px;align-items:center;margin:0}
form.inline.row{display:flex;flex:1 1 24rem;flex-wrap:nowrap}form.inline.row input{flex:1 1 16rem;min-width:0}form.inline.row .btn{flex:none}
.grow{flex:1;margin:0}.mono{font-family:ui-monospace,Menlo,monospace;font-size:13px}
.okbtn{background:var(--accent)}.badbtn{background:var(--warn)}.btn.badbtn:hover{background:#8a3e10}
.wrap.wide,.topbar-in.wide{max-width:1160px}
td,.stats,.score{font-variant-numeric:tabular-nums}
form.busy .btn,form.busy .linkbtn{cursor:progress;opacity:.7}
label.radio.small{font-size:12px;color:var(--muted)}
.warnnum{color:var(--warn);font-weight:700}
.result{text-align:center;max-width:560px;margin:24px auto}
.rname{color:var(--muted);margin:0 0 12px;font-size:1rem;font-weight:400}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.gradecircle{width:132px;height:132px;border-radius:50%;margin:0 auto 18px;display:grid;place-items:center;font-size:2.6rem;font-weight:800}
.g-ap,.g-a{background:#dff1e6;color:#13633a}.g-bp,.g-b{background:var(--info-soft);color:var(--info)}.g-cp,.g-c{background:#f6e3da;color:#8f420f}.g-none{background:var(--hover);color:#595959}
.score b{font-size:2.6rem}.score span{color:var(--muted);font-size:1.1rem}
.range{color:var(--muted);font-size:14px}.rank{font-weight:700;margin:14px 0 6px}
.band{margin:22px 8px 6px}.track{position:relative;height:8px;border-radius:99px;background:var(--line)}
.fill{height:100%;border-radius:99px;background:var(--accent)}
.thumb{position:absolute;top:50%;width:18px;height:18px;margin:-9px 0 0 -9px;border-radius:50%;background:var(--accent);border:3px solid #fff;box-shadow:0 0 0 1px var(--accent)}
.ticks{position:relative;height:22px;margin-top:8px;font-size:12px;color:var(--muted)}.ticks span{position:absolute;transform:translateX(-50%)}
.correctbox{background:var(--bg);border-radius:var(--radius);padding:12px;margin:18px 0 12px}
.disclaimer{font-size:12px;color:var(--muted);margin:0}
.reviewcta{max-width:560px;margin:16px auto;text-align:center}
.reviewcta .hint{margin:8px 0 16px}.reviewcta form{margin:0}
.gradepill{display:inline-block;min-width:34px;text-align:center;border-radius:99px;padding:1px 10px;font-weight:700;font-size:13px}
.rq .qhead2{margin-bottom:8px}.vmark{display:inline-grid;place-items:center;width:22px;height:22px;border-radius:50%;font-size:13px;font-weight:700;margin-right:4px}
.v-correct{background:#dff1e6;color:#13633a}.v-wrong{background:#f9dcd2;color:#8f3a12}.v-blank{background:var(--hover);color:#595959}
.ropt{display:flex;gap:10px;align-items:center;padding:8px 10px;border:1px solid var(--line);border-radius:8px;margin-bottom:6px}
.ropt.right{border-color:#8fcaa8;background:#eef8f2}.ropt.wrongpick{border-color:#e9a58b;background:#fcefe9}
.ropt .letter{width:24px;height:24px;border-radius:50%;background:var(--hover);display:grid;place-items:center;font-weight:700;font-size:13px;flex:none}
.tag{margin-left:auto;font-size:12px;color:var(--muted);white-space:nowrap}.tag.good{color:#13633a;font-weight:600}
.rpart{margin:10px 0;padding-left:8px}.myans{margin:2px 0}
.context{background:#faf9fc;border-left:3px solid var(--accent);border-radius:6px;padding:10px 14px;margin-bottom:10px}.context .qtext{margin:0}
.qtext{white-space:pre-wrap;overflow-wrap:anywhere}
table.stat td,table.stat th{padding:5px 8px;font-size:13px}.flagrow{background:#fbf3ec}.excl{opacity:.55}
.flag{background:var(--warn-soft);color:var(--warn);border-radius:99px;padding:1px 8px;font-size:11px;font-weight:600;white-space:nowrap}

a.btn{text-decoration:none;display:inline-block}
a.btn:not(.ghost){color:#fff}a.btn.ghost{color:var(--ink)}
.issues ul{margin:8px 0;padding-left:20px;font-size:14px}.issues li{margin-bottom:4px}
pre.sample{background:var(--bg);border-radius:8px;padding:12px;overflow-x:auto;white-space:pre-wrap;overflow-wrap:anywhere;font:13px/1.5 ui-monospace,Menlo,monospace}
h3{margin:16px 0 4px;font-size:1rem}

.distbar{width:40%}.distbar span{display:block;height:10px;background:var(--accent);border-radius:3px;min-width:1px}

@media (max-width:600px){
  .topbar-in{flex-wrap:wrap}
  .adminnav{order:3;flex-basis:100%;margin:0 -8px;overflow-x:auto}
  .adminnav form{margin-left:0}
  .card{padding:18px}
}