:root{color-scheme:dark;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:#08090b;color:#f6f2ea;font-synthesis:none;text-rendering:geometricPrecision}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;overflow-x:hidden;background:radial-gradient(circle at 50% 24%,rgba(223,218,200,.12),transparent 22rem),linear-gradient(135deg,#06070a,#101013 54%,#050506)}button,textarea,input{font:inherit}button{border:0;cursor:pointer}.stage{position:relative;min-height:100vh;display:grid;place-items:center;padding:56px 24px;overflow:hidden;isolation:isolate}.mode-tabs{position:absolute;top:24px;left:50%;z-index:10;display:grid;grid-template-columns:1fr;gap:6px;width:min(150px,calc(100% - 32px));padding:6px;border:1px solid rgba(246,242,234,.12);border-radius:999px;background:#ffffff0d;transform:translate(-50%);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}.mode-tabs button{min-height:38px;border-radius:999px;background:transparent;color:#f6f2ea8f;font-size:13px;font-weight:780}.mode-tabs button.active{background:#f6f2ea1f;color:#fffaf0}.language-switch{position:absolute;top:24px;right:24px;z-index:10;min-width:54px;min-height:50px;border:1px solid rgba(246,242,234,.12);border-radius:999px;background:#ffffff0d;color:#f6f2ead6;font-size:13px;font-weight:850;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}.arabic{font-family:Segoe UI,Tahoma,Arial,ui-sans-serif,system-ui,sans-serif}.arabic .quiet-label{letter-spacing:0}.ambient{position:fixed;z-index:-1;width:46vw;max-width:720px;aspect-ratio:1;border-radius:50%;filter:blur(80px);opacity:.38;transform:translateZ(0)}.ambient-one{top:-18vw;left:-10vw;background:#c2b1896b}.ambient-two{right:-12vw;bottom:-20vw;background:#4d749166}.intro{width:min(920px,100%);text-align:center;transition:opacity .62s ease,transform .72s cubic-bezier(.22,1,.36,1),filter .72s ease}.quiet-label{margin:0 0 18px;color:#f6f2ea94;font-size:13px;font-weight:700;letter-spacing:.18em;text-transform:uppercase}h1,h2,p{margin:0}h1{margin-bottom:34px;color:#fffaf0;font-size:clamp(44px,7vw,108px);font-weight:760;line-height:.94;letter-spacing:0}.search-shell{display:grid;grid-template-columns:1fr auto;align-items:end;gap:10px;width:min(820px,100%);min-height:76px;margin:0 auto;padding:10px;border:1px solid rgba(246,242,234,.18);border-radius:999px;background:#fffcf417;box-shadow:0 26px 90px #0000006b,inset 0 1px #ffffff14;-webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px)}.search-shell textarea{width:100%;min-width:0;min-height:52px;max-height:170px;border:0;outline:0;resize:none;overflow-y:auto;padding:10px 18px 10px 24px;background:transparent;color:#fffaf0;font-size:clamp(16px,2vw,24px);line-height:1.35}.search-shell textarea::placeholder{color:#f6f2ea6b}.search-shell button,.again{min-height:52px;padding:0 24px;border-radius:999px;background:#f4efe4;color:#11100e;font-size:14px;font-weight:780;letter-spacing:0;transition:transform .18s ease,background .18s ease,color .18s ease}.search-shell button:hover,.again:hover{transform:translateY(-1px);background:#fff}.samples{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;width:min(820px,100%);margin:22px auto 0}.samples button{max-width:260px;min-height:40px;overflow:hidden;padding:0 14px;border:1px solid rgba(246,242,234,.12);border-radius:999px;background:#ffffff0a;color:#f6f2eab8;font-size:13px;text-overflow:ellipsis;white-space:nowrap}.samples button:hover{border-color:#f6f2ea47;color:#fffaf0}.reveal{position:absolute;inset:0;display:grid;place-items:center;padding:54px 24px;opacity:0;pointer-events:none;transform:translateY(28px);transition:opacity .68s ease .26s,transform .76s cubic-bezier(.22,1,.36,1) .26s}.stage-running .intro{opacity:0;filter:blur(14px);transform:translateY(-38px) scale(.97);pointer-events:none}.stage-running .reveal{opacity:1;pointer-events:auto;transform:translateY(0)}.prompt-memory{position:absolute;top:34px;left:50%;width:min(860px,calc(100% - 48px));padding:14px 20px;border:1px solid rgba(246,242,234,.12);border-radius:24px;background:#fffcf40f;transform:translate(-50%);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.prompt-memory span{display:block;color:#f6f2ea70;font-size:11px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.prompt-memory p{margin-top:4px;color:#f6f2eacc;font-size:14px;line-height:1.35;overflow-wrap:anywhere}.answer-card{width:min(900px,100%);min-height:430px;display:grid;align-content:center;padding:clamp(34px,6vw,76px);border:1px solid rgba(246,242,234,.14);border-radius:28px;background:radial-gradient(circle at 50% 0%,var(--glow),transparent 28rem),#0f0f10bd;box-shadow:0 50px 130px #0000007a,inset 0 1px #ffffff0f;-webkit-backdrop-filter:blur(28px);backdrop-filter:blur(28px);animation:answerIn .74s cubic-bezier(.22,1,.36,1) both}.answer-card.rose{--glow: rgba(187, 82, 96, .24)}.answer-card.gold{--glow: rgba(197, 159, 83, .24)}.answer-card.green{--glow: rgba(101, 165, 124, .22)}.answer-card.blue{--glow: rgba(86, 136, 176, .24)}.era-meta{display:flex;justify-content:space-between;gap:18px;margin-bottom:28px;color:#f6f2ea85;font-size:13px;font-weight:780;letter-spacing:.12em;text-transform:uppercase}.answer-card h2{color:#fffaf0;font-size:clamp(34px,5vw,76px);font-weight:760;line-height:.95;letter-spacing:0}.answer{max-width:780px;margin-top:34px;color:#fffaf0eb;font-size:clamp(26px,4vw,54px);font-weight:650;line-height:1.08;letter-spacing:0}.method{margin-top:34px;color:#f6f2ea80;font-size:clamp(15px,1.5vw,18px)}.timeline{position:absolute;bottom:46px;left:50%;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;width:min(720px,calc(100% - 48px));transform:translate(-50%)}.chat-mode{place-items:stretch center;padding-top:124px;overflow-y:auto}.hub-mode,.old-ai-mode,.game-mode{place-items:start center;align-content:start;min-height:100vh;padding-top:104px;padding-bottom:48px;overflow-y:auto}.old-ai-mode{padding-top:48px}.hub-surface{width:min(1180px,100%)}.old-ai-shell{width:min(1540px,100%);display:grid;justify-items:center}.experiment-header{position:relative;box-sizing:border-box;width:min(1540px,100%);margin:18px auto 24px;padding:0 190px;text-align:center}.experiment-header button{position:absolute;top:50%;right:0;transform:translateY(-50%);min-height:44px;padding:0 16px;border:1px solid rgba(246,242,234,.12);border-radius:999px;background:#ffffff0e;color:#f6f2eac2;font-size:13px;font-weight:850}.experiment-header h1{margin-bottom:12px;font-size:clamp(54px,6.1vw,112px);line-height:.94;white-space:nowrap}.experiment-header p{color:#f6f2ea9e;font-size:17px}.experiment-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;width:min(520px,100%);margin:0 auto 28px;padding:6px;border:1px solid rgba(246,242,234,.12);border-radius:999px;background:#ffffff0d;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}.old-ai-mode .mode-tabs{display:none}.old-ai-mode .language-switch{right:auto;left:24px}.old-ai-mode .intro,.old-ai-mode .chat-surface,.old-ai-mode .game-surface{margin-top:18px}.experiment-tabs button{min-height:42px;border-radius:999px;background:transparent;color:#f6f2ea94;font-size:13px;font-weight:850}.experiment-tabs button.active{background:#f6f2ea21;color:#fffaf0}.stage-running .experiment-header,.stage-running .experiment-tabs{opacity:0;pointer-events:none}.hub-hero{margin:40px auto 32px;text-align:center}.hub-hero h1{margin-bottom:20px;font-size:clamp(54px,8vw,118px)}.hub-hero p{max-width:720px;margin:0 auto;color:#f6f2eaa8;font-size:clamp(18px,2vw,24px);line-height:1.45}.experiment-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.experiment-card{min-height:310px;display:grid;grid-template-rows:auto 1fr auto;gap:22px;padding:24px;border:1px solid rgba(246,242,234,.13);border-radius:28px;background:radial-gradient(circle at 50% 0%,rgba(219,205,165,.13),transparent 22rem),#0f0f10bd;box-shadow:0 40px 110px #00000057,inset 0 1px #ffffff0f;-webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px)}.experiment-card.soon{opacity:.62}.experiment-index{color:#f6f2ea57;font-size:13px;font-weight:900;letter-spacing:.16em}.experiment-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}.experiment-meta span{min-height:28px;display:inline-flex;align-items:center;padding:0 10px;border:1px solid rgba(246,242,234,.1);border-radius:999px;background:#ffffff0b;color:#f6f2ea94;font-size:11px;font-weight:850}.experiment-card h2{color:#fffaf0;font-size:clamp(25px,2.7vw,38px);line-height:1.03}.experiment-card p{margin-top:14px;color:#f6f2ea9e;font-size:16px;line-height:1.5}.experiment-card button{width:fit-content;min-height:46px;padding:0 20px;border-radius:999px;background:#f4efe4;color:#11100e;font-size:13px;font-weight:850}.experiment-card button:disabled{cursor:default;opacity:.42}.chat-mode .timeline{position:static;transform:none}.chat-surface{width:min(980px,100%)}.game-surface{width:min(1220px,100%);padding-top:0}.game-mode-switch{display:grid;grid-template-columns:1fr 1fr;gap:8px;width:min(460px,100%);margin:0 auto 24px;padding:6px;border:1px solid rgba(246,242,234,.12);border-radius:999px;background:#ffffff0d;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}.game-mode-switch button{min-height:42px;border-radius:999px;background:transparent;color:#f6f2ea94;font-size:13px;font-weight:800}.game-mode-switch button.active{background:#f6f2ea21;color:#fffaf0}.public-game-note{width:fit-content;margin:0 auto 24px;padding:10px 16px;border:1px solid rgba(246,242,234,.12);border-radius:999px;background:#ffffff0d;color:#f6f2ea9e;font-size:13px;font-weight:800}.game-card{border:1px solid rgba(246,242,234,.14);border-radius:28px;background:radial-gradient(circle at 50% 0%,rgba(219,205,165,.12),transparent 26rem),#0f0f10c2;box-shadow:0 48px 120px #00000070,inset 0 1px #ffffff0f;-webkit-backdrop-filter:blur(28px);backdrop-filter:blur(28px)}.start-card{width:min(560px,100%);margin:0 auto;padding:clamp(24px,5vw,44px);text-align:center}.start-card h2{color:#fffaf0;font-size:clamp(28px,4vw,46px);line-height:1}.start-card p{margin:14px auto 24px;max-width:360px;color:#f6f2ea9e;font-size:16px;line-height:1.5}.start-card input,.phone-surface input{width:100%;min-height:54px;margin-bottom:10px;border:1px solid rgba(246,242,234,.14);border-radius:18px;outline:0;padding:0 16px;background:#ffffff0e;color:#fffaf0}.start-card button,.game-primary,.reveal-note button,.phone-surface button{min-height:52px;padding:0 24px;border-radius:999px;background:#f4efe4;color:#11100e;font-size:14px;font-weight:820}.round-card{width:100%;margin:0 auto;padding:clamp(20px,4vw,38px)}.round-top{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:14px;margin-bottom:24px}.round-top span{min-width:44px;color:#f6f2eab3;font-size:13px;font-weight:850}.round-top:after{content:"";grid-column:2;grid-row:1;height:4px;border-radius:999px;background:#f6f2ea1f}.round-top i{grid-column:2;grid-row:1;z-index:1;height:4px;border-radius:999px;background:#f4efe4;transition:width .24s linear}.round-label{margin-bottom:10px;color:#f6f2ea70;font-size:11px;font-weight:850;letter-spacing:.16em;text-transform:uppercase}.round-card h2{max-width:780px;color:#fffaf0;font-size:clamp(28px,4.6vw,56px);line-height:1.08}.round-question{margin:22px 0 18px;color:#f6f2eab3;font-size:clamp(17px,2vw,22px);font-weight:760}.answer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.game-answer{min-height:96px;display:grid;grid-template-columns:34px 1fr;gap:12px;align-items:start;border:1px solid rgba(246,242,234,.12);border-radius:20px;padding:18px;background:#ffffff0d;color:#fffaf0e0;text-align:left;font-size:clamp(15px,1.6vw,18px);line-height:1.35;transition:transform .18s ease,border-color .18s ease,background .18s ease}.arabic .game-answer{text-align:right}.arabic .game-answer span{margin-left:0}.game-answer:hover:not(:disabled){border-color:#f6f2ea52;background:#ffffff14;transform:translateY(-1px)}.game-answer span{display:grid;width:34px;height:34px;place-items:center;border-radius:999px;background:#f6f2ea1f;color:#fffaf0;font-size:13px;font-weight:850}.game-answer.chosen{border-color:#f6f2ea7a;background:#f6f2ea1f}.game-answer.correct{border-color:#7ccd9bcc;background:#488b623d}.game-answer.wrong{border-color:#d76370c2;background:#96344133}.score-strip{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.score-strip span{min-height:34px;display:inline-flex;align-items:center;padding:0 12px;border:1px solid rgba(246,242,234,.1);border-radius:999px;background:#ffffff0d;color:#f6f2eaad;font-size:13px;font-weight:780}.reveal-note{margin-top:16px;padding:18px;border:1px solid rgba(246,242,234,.12);border-radius:20px;background:#ffffff0d}.reveal-note strong{color:#fffaf0;font-size:18px}.reveal-note p{margin:8px 0 14px;color:#f6f2eaa6;line-height:1.45}.host-grid{display:grid;grid-template-columns:220px minmax(0,1fr) 220px;gap:18px;align-items:stretch}.qr-card,.leaderboard-card{min-height:650px;padding:24px 20px}.qr-card{display:grid;align-content:start;justify-items:center;text-align:center}.qr-card h2,.leaderboard-card h2{color:#fffaf0;font-size:30px;line-height:1.06}.qr-card svg{display:block;width:150px;height:150px;margin:22px auto;border-radius:14px;background:#fffaf0;box-shadow:0 18px 50px #00000047}.qr-card strong{display:block;color:#fffaf0;font-size:28px;letter-spacing:.16em}.qr-card p,.empty-board{margin-top:10px;color:#f6f2ea8f}.join-url-label{margin-top:18px!important;font-size:12px}.join-url{display:block;max-width:100%;margin-top:8px;overflow-wrap:anywhere;color:#fffaf0d1;font-size:12px;line-height:1.35;text-decoration:none}.leaderboard{display:grid;gap:8px;margin:18px 0 0;padding:0;list-style:none}.leaderboard-card{display:flex;flex-direction:column}.leaderboard-card .empty-board{display:grid;min-height:150px;place-items:center;border:1px solid rgba(246,242,234,.09);border-radius:18px;background:#ffffff0a}.leaderboard li{display:grid;grid-template-columns:28px 1fr auto;align-items:center;gap:10px;min-height:42px;padding:0 12px;border:1px solid rgba(246,242,234,.09);border-radius:14px;background:#ffffff0b}.arabic .leaderboard li{grid-template-columns:auto 1fr 28px}.leaderboard li span{color:#f6f2ea70;font-size:12px;font-weight:850}.leaderboard li strong{min-width:0;overflow:hidden;color:#fffaf0db;font-size:14px;text-overflow:ellipsis;white-space:nowrap}.leaderboard li b{color:#fffaf0;font-size:14px}.phone-surface{width:min(620px,100%);min-height:calc(100vh - 152px);display:grid;place-items:center;padding:0 14px 22px}.chat-header{margin-bottom:24px;text-align:center}.chat-header h1{margin-bottom:0;font-size:clamp(42px,6vw,86px)}.chat-panel{--glow: rgba(86, 136, 176, .22);width:min(900px,100%);min-height:540px;display:grid;grid-template-rows:auto 1fr auto;gap:18px;margin:22px auto 0;padding:clamp(18px,3vw,34px);border:1px solid rgba(246,242,234,.14);border-radius:28px;background:radial-gradient(circle at 50% 0%,var(--glow),transparent 28rem),#0f0f10bd;box-shadow:0 50px 130px #0000007a,inset 0 1px #ffffff0f;-webkit-backdrop-filter:blur(28px);backdrop-filter:blur(28px)}.chat-panel.rose{--glow: rgba(187, 82, 96, .2)}.chat-panel.gold{--glow: rgba(197, 159, 83, .2)}.chat-panel.green{--glow: rgba(101, 165, 124, .2)}.chat-panel.blue{--glow: rgba(86, 136, 176, .22)}.chat-title span{display:block;margin-bottom:8px;color:#f6f2ea80;font-size:12px;font-weight:820;letter-spacing:.12em;text-transform:uppercase}.chat-title h2{color:#fffaf0;font-size:clamp(30px,4vw,54px);line-height:1}.messages{min-height:260px;max-height:440px;overflow-y:auto;display:flex;flex-direction:column;gap:12px;padding:4px 4px 8px}.message{width:fit-content;max-width:min(620px,86%);padding:14px 16px;border:1px solid rgba(246,242,234,.1);border-radius:20px;background:#ffffff0e}.message.user{align-self:flex-end;background:#f6f2ea24}.message.assistant{align-self:flex-start}.message p{color:#fffaf0eb;font-size:clamp(16px,1.7vw,21px);line-height:1.35}.message span{display:block;margin-top:8px;color:#f6f2ea6b;font-size:12px}.chat-input{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:end;padding:10px;border:1px solid rgba(246,242,234,.14);border-radius:26px;background:#ffffff0e}.chat-input textarea{width:100%;min-height:52px;max-height:140px;border:0;outline:0;resize:none;padding:14px 16px;background:transparent;color:#fffaf0;font-size:17px;line-height:1.35}.chat-input button{min-height:52px;padding:0 24px;border-radius:999px;background:#f4efe4;color:#11100e;font-size:14px;font-weight:780}.chat-input button:disabled{cursor:wait;opacity:.55}.timeline button{min-height:46px;border:1px solid rgba(246,242,234,.1);border-radius:999px;background:#ffffff09;color:#f6f2ea80;font-size:13px;font-weight:760;transition:border-color .22s ease,color .22s ease,background .22s ease}.timeline button.active{border-color:#f6f2ea6b;background:#ffffff1c;color:#fffaf0}.timeline span{display:inline-grid;width:22px;height:22px;place-items:center;margin-right:8px;border-radius:999px;background:#f6f2ea1f;font-size:12px}.again{position:absolute;right:34px;bottom:42px;border:1px solid rgba(246,242,234,.16);background:#ffffff0f;color:#fffaf0;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}@keyframes answerIn{0%{opacity:0;transform:translateY(24px) scale(.985)}}@media(max-width:920px){.stage{padding:32px 16px}.chat-mode,.hub-mode,.game-mode{padding-top:88px}.search-shell{grid-template-columns:1fr;border-radius:30px;padding:12px}.search-shell textarea{min-height:58px;padding:10px 14px}.timeline{position:static;grid-template-columns:1fr 1fr;margin-top:22px;transform:none}.reveal{position:absolute;display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;padding:24px;overflow-y:auto}.prompt-memory{position:static;width:100%;margin-bottom:36px;transform:none}.answer-card{width:100%;min-height:0;border-radius:20px}.again{position:static;justify-self:center;margin-top:14px}.chat-panel{min-height:0;border-radius:20px}.chat-input{grid-template-columns:1fr}.game-surface{padding-top:0}.host-grid{grid-template-columns:1fr;align-items:start}.qr-card,.leaderboard-card{min-height:0;width:min(620px,100%);margin:0 auto}.answer-grid{grid-template-columns:1fr}.experiment-grid{grid-template-columns:1fr 1fr}.experiment-header{grid-template-columns:1fr;width:min(720px,100%);padding:0}.experiment-header h1{white-space:normal}.experiment-header button{position:static;margin:0 auto 18px;transform:none}}@media(max-width:560px){h1{font-size:48px}.samples{display:none}.prompt-memory{width:100%;border-radius:18px}.answer{font-size:30px}.timeline{grid-template-columns:1fr}.mode-tabs{top:14px;width:118px}.language-switch{top:72px;right:16px;min-width:48px;min-height:42px}.game-mode,.hub-mode{padding-top:128px}.hub-hero{margin-top:0}.hub-hero h1{font-size:48px}.experiment-grid{grid-template-columns:1fr}.experiment-tabs{grid-template-columns:1fr;border-radius:24px}.mode-tabs button{font-size:12px}.game-mode-switch{grid-template-columns:1fr;border-radius:24px}.round-card,.start-card{border-radius:20px}.round-card h2{font-size:30px}.game-answer{min-height:0}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}}