:root{--bg:#f5efe6;--bg-accent:#fdeec7;--ink:#17232e;--ink-soft:#3d5161;--card:hsla(0,0%,100%,.86);--primary:#1a7f5a;--primary-ink:#f4fff8;--line:rgba(23,35,46,.12);--warning:#a85a00}*{box-sizing:border-box}body,html{margin:0;min-height:100vh;font-family:Space Grotesk,sans-serif;color:var(--ink);background:radial-gradient(circle at 15% 20%,var(--bg-accent),transparent 34%),radial-gradient(circle at 90% 15%,#f4d6bf,transparent 25%),linear-gradient(135deg,#f8f4ec 0,#e7efe8 45%,#d8e5e9 100%);overflow-x:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center}h1,h2,h3{font-family:Fraunces,serif;margin:0}.bg-orb{position:fixed;width:38vw;height:38vw;border-radius:999px;filter:blur(48px);opacity:.22;pointer-events:none;animation:float 8s ease-in-out infinite}.orb-a{background:#7ac39a;top:-10vw;left:-10vw}.orb-b{background:#f7b774;right:-14vw;bottom:-16vw;animation-delay:-3s}.shell{width:min(1080px,92vw);margin:0;position:relative;z-index:2;display:flex;flex-direction:column;gap:20px;padding:20px}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:24px;gap:24px}.card{background:var(--card);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:0 10px 30px rgba(19,33,43,.08)}.hero h1{font-size:clamp(2rem,4vw,3.6rem)}.eyebrow{margin:0;font-weight:700;letter-spacing:.04em;text-transform:uppercase}.eyebrow,.hero-copy{color:var(--ink-soft)}.hero-copy{margin:8px 0 0;line-height:1.6;max-width:72ch}.hero-top-row{justify-content:space-between;gap:12px}.hero-top-row,.lang-switch{display:flex;align-items:center}.lang-switch{gap:8px}.lang-switch select{border:1px solid var(--line);border-radius:10px;padding:6px 10px;background:#fff;font-weight:700}.settings-form{display:grid;grid-gap:10px;gap:10px}.tiny,label,legend{color:var(--ink-soft)}input,select{width:100%;margin-top:4px;padding:10px 12px;border-radius:12px;background:hsla(0,0%,100%,.9);color:var(--ink);font-size:1rem;font-family:Space Grotesk,sans-serif}fieldset,input,select{border:1px solid var(--line)}fieldset{border-radius:14px;padding:12px;display:flex;flex-direction:column;gap:12px}fieldset legend{font-weight:700;margin-bottom:4px}.ops-groups{display:grid;grid-template-columns:repeat(auto-fit,minmax(100px,1fr));width:100%;grid-gap:12px;gap:12px}.ops-group{border:1px solid var(--line);border-radius:10px;padding:12px;display:flex;flex-direction:column;gap:10px;background:hsla(0,0%,100%,.72)}.ops-group-title{margin:0;font-size:.78rem;font-weight:700;letter-spacing:.04em;color:var(--ink-soft);text-transform:uppercase}.ops-list{display:grid;grid-template-columns:1fr;grid-gap:8px;gap:8px}.ops-group>.ops-list label{display:flex;align-items:center;gap:6px;padding:8px;background:hsla(0,0%,100%,.6);border:1px solid var(--line);border-radius:8px;cursor:pointer;transition:all .18s ease}.ops-group>.ops-list label:hover{background:rgba(26,127,90,.08);border-color:var(--primary)}.ops-group>.ops-list input[type=checkbox]{width:auto;margin:0;cursor:pointer}.op-symbol{font-size:1.1rem;font-weight:700;color:var(--ink);min-width:20px;text-align:center}.op-label{font-size:.75rem;font-weight:600;color:var(--ink-soft);white-space:nowrap}.mode-actions{display:grid;grid-gap:10px;gap:10px}.join-row{display:grid;grid-template-columns:1fr auto;grid-gap:8px;gap:8px}.btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--line);border-radius:12px;background:#fff;padding:10px 12px;color:var(--ink);font-weight:700;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease;font-size:1rem;font-family:Space Grotesk,sans-serif}.btn:hover{transform:translateY(-1px);box-shadow:0 8px 16px rgba(0,0,0,.08)}.btn:disabled{background:#ccc;color:#888;border-color:transparent;cursor:not-allowed;transform:none;box-shadow:none;opacity:.7}.btn-primary{background:var(--primary);color:var(--primary-ink);border-color:transparent}.btn-small{padding:6px 10px;margin-left:8px}.status-bar{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:10px;gap:10px}.label{margin:0;font-size:.76rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-soft)}.puzzle-panel{margin-top:14px;display:grid;grid-template-columns:110px 1fr 130px;grid-gap:12px;gap:12px;align-items:center}.target{margin:4px 0 0;font-size:2rem;font-weight:700}.numbers{display:flex;flex-wrap:wrap;gap:10px}.number-chip{width:58px;height:58px;border-radius:16px;display:grid;place-items:center;font-size:1.65rem;font-weight:700;color:#112019;background:linear-gradient(150deg,#f8fff6,#c6ebd4);border:1px solid rgba(17,32,25,.14);animation:pop .42s ease}.answer-row{margin-top:14px;display:grid;grid-template-columns:1fr auto auto;grid-gap:8px;gap:8px}.hint,.result{min-height:24px;margin:8px 0 0}.hint{color:var(--warning)}.result{font-weight:700}.multi-controls{margin-top:10px;display:flex;gap:8px}.players{display:grid;grid-gap:8px;gap:8px}.player-row{border:1px solid var(--line);border-radius:12px;padding:10px 12px;display:grid;grid-template-columns:1fr auto auto;grid-gap:12px;gap:12px;align-items:center;background:hsla(0,0%,100%,.75)}.player-row strong{font-size:1.02rem}.empty{color:var(--ink-soft)}.hidden{display:none}.reveal{animation:reveal .5s ease both}@keyframes reveal{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes pop{0%{transform:scale(.8);opacity:.6}to{transform:scale(1);opacity:1}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-18px)}}@media (max-width:860px){.answer-row,.grid-2,.ops-groups,.puzzle-panel,.status-bar{grid-template-columns:1fr}.number-chip{width:52px;height:52px}.player-row{grid-template-columns:1fr;gap:4px}}