:root{--paper:#f5f7fb;--ink:#182940;--muted:#52657d;--line:#d8e0ee;--green:#006bb6;--orange:#990099;--white:#ffffff;--soft:#eaf0fa;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0;border-radius:12px;padding:.85rem 1.1rem;background:var(--green);color:white;font-weight:650;min-height:46px;transition:background .15s,transform .15s}button:hover{filter:brightness(1.07)}button:active{transform:translateY(1px)}button:disabled{opacity:.45;cursor:wait}button.secondary{background:var(--soft);color:var(--green)}button.danger{background:#a43f34}button.quiet{background:transparent;color:var(--ink);padding:.6rem .75rem;border:1px solid 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28px;min-height:65vh}.hero{display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:65px;padding:35px 0 70px}.hero h1 em{font-style:normal;color:var(--orange)}.hero p{max-width:470px;font-size:1.08rem}.hero-art{background:var(--green);min-height:390px;border-radius:30px;padding:35px;color:var(--paper);position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:space-between}.hero-art:before{content:"";position:absolute;width:260px;height:260px;border:50px solid #96b2dd;border-radius:50%;right:-80px;top:-80px}.art-number{font-size:105px;font-weight:800;letter-spacing:-8px;line-height:1;z-index:1}.art-number span{color:#ffffff}.art-caption{font-size:.8rem;letter-spacing:.13em;z-index:1}.art-bet{z-index:1;background:var(--paper);color:var(--ink);border-radius:18px;padding:18px 22px;margin-top:20px;display:flex;align-items:center;justify-content:space-between;gap:18px}.art-bet strong{font-size:2rem}.art-dots{display:flex;gap:7px}.art-dots i{width:28px;height:28px;border-radius:50%;background:var(--orange);border:3px solid var(--paper);box-shadow:0 0 0 1px var(--orange)}.grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(280px,1fr);gap:22px;align-items:start}.card{background:var(--white);border:1px solid var(--line);border-radius:22px;padding:26px;margin-bottom:20px;box-shadow:0 4px 20px #18294003}.card.green{background:var(--green);color:var(--paper);border:0}.green .muted{color:#e7effa}.green .eyebrow{color:#e7effa}.card.soft{background:var(--soft)}.narrow{max-width:520px;margin:40px auto}.fields{display:grid;gap:17px}.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.spread{justify-content:space-between}.stack{display:flex;flex-direction:column;gap:10px}.wide{width:100%}.badge{display:inline-flex;border-radius:50px;background:var(--soft);color:var(--green);padding:6px 11px;font-size:.74rem;font-weight:700;letter-spacing:.03em}.badge.active{background:#e6edfa}.badge.orange{background:#f3e6f5;color:#790079}.page-top{display:flex;justify-content:space-between;gap:20px;align-items:end;margin:28px 0}.page-top h1{font-size:clamp(2rem,4vw,3rem);margin-bottom:0}.round-mark{font-size:72px;font-weight:800;letter-spacing:-5px;opacity:.3}.challenge-rules{white-space:pre-line;line-height:1.7;color:var(--muted)}.team-option{display:flex;align-items:center;gap:10px;border:1px solid var(--line);background:var(--white);color:var(--ink);text-align:left}.team-option.selected{border:2px solid var(--green);background:var(--soft)}.dot{display:inline-block;flex-shrink:0;width:12px;height:12px;border-radius:50%;background:var(--team,var(--green))}.balance{font-size:64px;line-height:1.1;font-weight:760;letter-spacing:-4px;margin:15px 0}.stake{display:grid;grid-template-columns:52px 1fr 52px;gap:10px;margin:12px 0}.stake input{text-align:center;font-size:1.6rem;font-weight:700}.stake button{font-size:1.4rem;padding:8px}.preview{display:flex;gap:14px;justify-content:space-between;background:var(--soft);padding:14px;border-radius:12px;margin:14px 0;line-height:1.6}.preview b{display:block;font-size:1.3rem}.leader{display:grid;grid-template-columns:30px minmax(0,1fr) auto;align-items:center;gap:10px;padding:16px 0;border-bottom:1px solid var(--line)}.leader:last-child{border:0}.leader .name{display:flex;gap:10px;align-items:center;overflow-wrap:anywhere}.leader strong{font-size:1.35rem}.rank{color:var(--muted);font-size:.9rem}.notice{background:#eaf0fa;border-left:3px solid var(--green);padding:13px 16px;border-radius:8px;font-size:.9rem;line-height:1.55;margin:15px 0}.notice.warn{background:#f5e8f7;border-color:var(--orange)}.status-list{display:grid;gap:12px}.status-team{display:flex;justify-content:space-between;align-items:center;gap:8px}.status-team .badge{font-size:.7rem}.invite{padding:18px 0;border-bottom:1px solid var(--line)}.invite:last-child{border:0}.invite img{width:160px;height:160px;background:white;border-radius:10px;margin-top:12px}.invite code{font-size:1.2rem;letter-spacing:.14em}.invite input{font-size:.75rem;margin:10px 0}.history-entry{padding:14px 0;border-bottom:1px solid var(--line);font-size:.9rem}.history-entry p{margin-bottom:5px}.history-entry pre{white-space:pre-wrap;word-break:break-word;font:inherit}details{border-top:1px solid var(--line);padding-top:17px;margin-top:20px}summary{cursor:pointer;font-weight:650;min-height:36px}.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}.tabs button{padding:8px 12px;font-size:.8rem}.metrics{display:grid;grid-template-columns:1fr 1fr;gap:12px}.screen{max-width:1100px;margin:auto}.screen .leader{padding:23px 0;font-size:1.4rem}.screen .leader strong{font-size:2rem}.screen h1{font-size:4rem}.empty{text-align:center;padding:35px 10px;color:var(--muted)}#connection{position:sticky;top:0;z-index:5;background:#a43f34;color:white;text-align:center;padding:12px;font-size:.9rem}#toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);max-width:calc(100% - 32px);padding:14px 24px;border-radius:14px;background:var(--ink);color:white;z-index:50;box-shadow:0 5px 30px #0002;line-height:1.5}dialog{width:min(780px,calc(100% - 28px));max-height:86vh;border:1px solid var(--line);border-radius:22px;padding:28px;background:var(--paper);color:var(--ink)}dialog::backdrop{background:#172640a6;backdrop-filter:blur(4px)}.dialog-top{display:flex;align-items:center;justify-content:space-between;gap:12px;position:sticky;top:-28px;background:var(--paper);padding:10px 0}.dialog-top h2{margin:0}footer{max-width:1212px;margin:0 auto;padding:25px 28px 35px;border-top:1px solid var(--line);display:flex;gap:15px;justify-content:space-between;color:var(--muted);font-size:.7rem;letter-spacing:.08em}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}[hidden]{display:none!important}:focus-visible{outline:3px solid #990099;outline-offset:4px}.easy p,.easy .challenge-rules{line-height:1.9}.easy{font-size:18px}button.loading{opacity:.5}.error{color:#a43f34}progress{width:100%;height:7px;accent-color:var(--orange)}@media(max-width:760px){header{padding:20px 18px;min-height:85px;align-items:start}.brand{font-size:37px}.top-actions{gap:6px;flex-wrap:wrap;justify-content:end}.top-actions select{max-width:165px;font-size:.78rem;padding:10px;min-height:42px}.top-actions button{font-size:.78rem;padding:10px;min-height:42px}main{padding:0 17px;margin-top:5px}.hero{grid-template-columns:1fr;gap:25px;padding:20px 0}.hero-art{min-height:245px;padding:25px}.art-number{font-size:80px}.hero h1{font-size:3.5rem;max-width:420px}.grid{grid-template-columns:1fr;gap:0}.card{padding:21px;border-radius:18px}.page-top{align-items:start}.round-mark{font-size:52px}.screen h1{font-size:2.6rem}.metrics{grid-template-columns:1fr 1fr}footer{padding:22px 18px;flex-direction:column}.narrow{margin:25px auto}.balance{font-size:54px}dialog{padding:21px}.dialog-top{top:-21px}.page-top .row{gap:8px}.page-top a.button{font-size:.8rem}.preview{font-size:.85rem}.easy .hero h1{font-size:3rem}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}@media print{header,.top-actions,footer,#toast,button{display:none}.card{break-inside:avoid}body{background:white}}

.balance .small{letter-spacing:normal;font-size:1rem;font-weight:550;display:inline-block;margin-left:7px}

/* Halle: original logo palette #006BB6 / #96B2DD / #2E3092.
   IERP: web colour #990099 from the official brand manual; source logos unchanged. */
.institutional{max-width:1144px;margin:0 auto 30px;padding:18px 30px;background:white;border:1px solid var(--line);border-radius:18px;display:grid;grid-template-columns:1fr 1px 1fr;align-items:center;gap:32px;box-shadow:inset 0 3px 0 #96b2dd}
.institutional a{display:flex;align-items:center;justify-content:center;min-width:0;padding:8px 20px}
.institutional img{display:block;max-width:100%;height:auto;object-fit:contain}
.institutional .halle-logo{width:225px}.institutional .ierp-logo{width:255px}
.institutional-separator{width:1px;height:75px;background:var(--line)}
.brand{color:#2e3092}.brand span{color:#990099}
.hero-art{background:#006bb6}.hero-art:before{border-color:#96b2dd;opacity:.45}.art-bet{border-top:4px solid #990099}
.card.green{background:#006bb6}.badge.active{color:#2e3092}.badge.orange{background:#f3e6f5;color:#790079}
.challenge-sources{font-size:.8rem;line-height:1.6;margin-top:14px;display:flex;flex-wrap:wrap;gap:7px 16px}.challenge-sources a{overflow-wrap:anywhere}
h1,h2,.badge{overflow-wrap:anywhere}.badge{max-width:100%}
@media(max-width:760px){.institutional{margin:0 17px 22px;padding:15px 10px;gap:13px;border-radius:14px}.institutional a{padding:7px 4px}.institutional-separator{height:50px}.institutional .halle-logo,.institutional .ierp-logo{width:100%}.hero{padding-top:8px}}