@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{--paper:#f4f7f8;--ink:#193c49;--muted:#607a83;--line:#d8e2e5;--sea:#126d84;--mist:#e3f0f3;--peach:#f0c8a9;--white:#fff;--radius:14px}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.5 'DM Sans',sans-serif}button,a,input,select{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer;color:inherit}button:disabled{cursor:not-allowed;opacity:.45}a{color:var(--sea)}[hidden]{display:none!important}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #de984f;outline-offset:4px}header{min-height:82px;padding:18px 4vw;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line);background:#fff}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink);font-weight:800;font-family:Manrope,sans-serif;font-size:19px;white-space:nowrap}.brand-icon{font-size:36px;color:var(--sea);line-height:1}nav{display:flex;gap:6px}.nav{border:0;background:none;padding:10px 16px;border-radius:25px;font-weight:600;color:var(--muted)}.nav.active{background:var(--mist);color:var(--sea)}.login{font-size:13px;text-decoration:none;border:1px solid var(--line);border-radius:8px;padding:9px 13px}main{max-width:1440px;margin:auto;padding:36px 4vw 50px}.intro{display:flex;align-items:center;justify-content:space-between;gap:24px;margin:4px 0 28px}h1,h2,h3{font-family:Manrope,sans-serif;line-height:1.2;margin:0;font-weight:800}h1{font-size:clamp(28px,3.4vw,44px);letter-spacing:-1.6px}h2{font-size:21px;letter-spacing:-.45px}h3{font-size:19px}.intro p{max-width:70ch;color:var(--muted);margin:12px 0 0}.allowance{font-size:12px;white-space:nowrap;color:var(--muted)}.scenario-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.scenario-heading h2{font-size:15px;letter-spacing:0}.scenario-heading span{font-size:12px;color:var(--muted)}.scenarios{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-bottom:28px}.scenario{overflow:hidden;padding:0;text-align:left;background:white;border:2px solid transparent;border-radius:12px;transition:border-color .15s}.scenario:hover{border-color:#90bac7}.scenario.selected{border-color:var(--sea)}.scenario img{width:100%;aspect-ratio:2.2;object-fit:cover;display:block}.scenario .caption{padding:10px 12px}.scenario strong{display:block;font-size:13px}.scenario small{font-size:11px;color:var(--muted)}.arena{background:white;border-radius:18px;overflow:hidden;box-shadow:0 6px 24px #153e4e08}.arena-top{display:flex;justify-content:space-between;align-items:center;padding:20px 24px}.arena-top #mode{display:block;color:var(--muted);font-size:11px;margin-bottom:6px}.viewports{display:grid;grid-template-columns:1fr 1fr;gap:3px;background:var(--paper)}.viewport{position:relative;aspect-ratio:1280/790;background:#d4e0e4;overflow:hidden}.world-label{height:40px;display:flex;align-items:center;gap:9px;padding:0 14px;background:#f1f6f8;font-size:12px;font-weight:700}.world-letter{background:var(--ink);color:white;border-radius:50%;width:22px;height:22px;display:grid;place-items:center;font-size:11px}.viewport:nth-child(2) .world-letter{background:#8e543c}.hidden-label{margin-left:auto;font-size:10px;font-weight:400;color:var(--muted)}video{display:block;width:100%;height:calc(100% - 40px);object-fit:contain;background:#d4e0e4}.video-message{position:absolute;left:20px;right:20px;bottom:20px;text-align:center;border-radius:8px;background:#ffffffee;padding:10px;font-size:13px}.playback{display:flex;align-items:center;gap:16px;padding:15px 24px;border-bottom:1px solid var(--line)}.play{border:0;border-radius:7px;background:var(--sea);color:white;padding:8px 17px;min-width:90px}.quiet{border:0;background:none;color:var(--muted);font-size:12px;padding:8px}.quiet:hover{color:var(--sea);background:var(--mist);border-radius:6px}.playback input{flex:1;min-width:30px;accent-color:var(--sea)}#time{font-size:11px;min-width:72px}.action{display:flex;align-items:baseline;gap:20px;padding:18px 24px 8px}.action>span,.path-row>span{color:var(--muted);font-size:11px;min-width:84px}.action p{margin:0;font-size:14px;max-width:95ch}.path-row{display:flex;align-items:center;gap:20px;padding:10px 24px}.path{display:flex;gap:6px;flex-wrap:wrap}.path button{border:0;background:#eef3f5;border-radius:6px;padding:6px 9px;font-size:11px}.path button.current{color:var(--sea);background:var(--mist)}.choices{display:flex;gap:12px;padding:16px 24px 22px}.choices button{border:1px solid #a7c7d0;background:#f3f9fa;border-radius:9px;padding:13px 20px;font-weight:600;flex:1;text-align:left}.choices button:hover{background:#e1eff3}.choices button span{float:right;color:var(--sea)}.vote-panel{padding:22px 24px;background:#edf5f7}.vote-panel p{color:var(--muted);font-size:12px;margin:6px 0 16px}.votes{display:flex;gap:9px}.votes button{background:white;border:1px solid #c1d5dc;border-radius:8px;padding:11px 24px;min-width:110px;font-weight:600}.votes button:first-child{border-color:#4d97ad}.votes button:nth-child(2){border-color:#c39274}.votes button:hover{background:var(--mist)}details{margin-top:18px;font-size:12px}summary{cursor:pointer}summary span{color:var(--muted)}.dimension-form{display:flex;gap:12px;padding:12px 0}select{padding:9px 12px;border:1px solid var(--line);border-radius:7px;background:white;color:var(--ink)}.reveal{padding:22px 24px;background:#edf5f7}.reveal #model-details{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:16px}.reveal h3{font-size:16px}.reveal pre{font-size:10px;white-space:pre-wrap}.primary{border:0;border-radius:8px;background:var(--sea);color:white;padding:10px 18px;font-weight:600;font-size:13px}#status{margin:0;padding:0 24px 14px;font-size:13px;color:#9b4329}#status:empty{padding:0}.below{display:flex;justify-content:space-between;gap:20px;align-items:center;color:var(--muted);font-size:11px;margin-top:12px}.notice{padding:12px 16px;background:#f7eadb;border-radius:8px;color:#745735;font-size:12px;margin-bottom:20px}.prose{max-width:820px;margin:20px auto}.prose h2{margin-top:32px}.prose p,.prose dd{color:var(--muted)}.prose dt{font-weight:700;margin-top:16px}.prose dd{margin:4px 0}footer{border-top:1px solid var(--line);display:flex;justify-content:space-between;padding:18px 4vw;font-size:11px;color:var(--muted)}#rank-controls{display:flex;align-items:center;gap:20px;margin:28px 0}.muted{color:var(--muted);max-width:80ch;font-size:13px}table{width:100%;border-collapse:collapse;background:white;border-radius:10px;overflow:hidden}td,th{text-align:left;padding:18px;border-bottom:1px solid var(--line)}th{font-size:12px;color:var(--muted);font-weight:500}.empty{padding:60px 20px;text-align:center;background:white;border-radius:12px;color:var(--muted)}.admin-block{background:white;padding:20px;margin:16px 0;border-radius:10px}.admin-block pre{white-space:pre-wrap;font-size:12px;overflow-wrap:anywhere}.admin-block button{margin:8px}.admin-metrics{display:flex;gap:30px}.admin-metrics strong{font-size:26px;display:block}
@media(max-width:800px){header{flex-wrap:wrap;gap:12px;padding:15px 5vw}.brand{font-size:16px}nav{order:3;width:100%;justify-content:center}.nav{padding:7px 13px;font-size:13px}main{padding:24px 4vw}h1{letter-spacing:-1px}.intro{display:block}.allowance{margin-top:14px}.scenarios{display:flex;overflow-x:auto;padding-bottom:8px;scroll-snap-type:x mandatory}.scenario{min-width:155px;scroll-snap-align:start}.scenario-heading span{display:none}.arena-top{padding:16px}.arena-top h2{font-size:17px}.world-label{padding:0 8px}.hidden-label{display:none}.playback{padding:12px;gap:8px}.playback #restart{display:none}.playback #fullscreen{display:none}.action{padding:16px;display:block}.action p{font-size:12px;margin-top:5px}.path-row{padding:4px 16px;display:block}.path{margin-top:6px}.choices{padding:15px;gap:8px}.choices button{font-size:12px;padding:12px}.vote-panel{padding:18px 16px}.votes{display:grid;grid-template-columns:1fr 1fr}.votes button{padding:10px;min-width:0}.below{display:block}.viewport{aspect-ratio:1280/860}.video-message{font-size:10px;left:4px;right:4px;bottom:4px;padding:5px}.reveal #model-details{grid-template-columns:1fr}td,th{padding:12px 8px;font-size:12px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.review-row{padding:1rem 0;border-bottom:1px solid var(--line)}.review-row label{display:flex;align-items:center;gap:.6rem;margin-bottom:1rem}.review-row textarea{display:block;width:100%;min-height:90px;margin:1rem 0;padding:12px;border:1px solid var(--line);border-radius:10px;font:inherit}.admin-block input,.admin-block select{padding:10px;margin:8px;border:1px solid var(--line);border-radius:8px}.admin-block pre{white-space:pre-wrap;overflow-wrap:anywhere}
.admin-metrics{flex-wrap:wrap;gap:12px 32px;border-bottom:1px solid var(--line);padding-bottom:16px}.admin-metrics p{color:var(--muted);font-size:12px}.admin-metrics strong{color:var(--ink)}.admin-block h2{margin-bottom:18px}.admin-block details{margin-bottom:20px}.table-scroll{overflow-x:auto;margin:16px 0}.table-scroll td{font-size:13px}.generation-progress{display:flex;align-items:center;gap:20px;max-width:620px;margin:18px 0}.generation-progress strong{min-width:90px;font-size:13px}.generation-progress progress{flex:1;min-width:50px;accent-color:var(--sea);height:10px}.generation-progress span{font-size:12px;white-space:nowrap}

/* Keep attention on the scenario, current action and next decision. */
.intro{margin-bottom:20px}#explore h1{font-size:28px;letter-spacing:-.8px}.scenario-heading{margin-bottom:10px}.scenarios{margin-bottom:20px}.choices:empty,.path:empty{display:none}.hidden-label{display:none}.votes{margin-top:16px}.spinner{display:inline-block;width:16px;height:16px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:spin .8s linear infinite;flex-shrink:0;vertical-align:middle}@keyframes spin{to{transform:rotate(360deg)}}
#catalog-loading,.video-message,#status:not(:empty){align-items:center;gap:9px}#catalog-loading{display:flex;margin:0 0 16px;color:var(--muted)}#catalog-loading[aria-busy="false"]>.spinner{display:none}.video-message{display:flex;justify-content:center;box-shadow:0 2px 12px #193c4914}#status:not(:empty){display:flex;color:var(--ink);padding-top:10px}.video-message button{padding:3px 8px}.video-message[aria-busy="true"]{color:var(--sea)}
.arena.is-preparing .viewports{grid-template-columns:1fr}.arena.is-preparing .viewport{aspect-ratio:auto;height:440px}.arena.is-preparing .viewport:nth-child(2),.arena.is-preparing .world-label,.arena.is-preparing .playback,.arena.is-preparing .path-row,.arena.is-preparing .choices{display:none}.arena.is-preparing video{height:100%}.arena.is-preparing .action{padding-bottom:20px}.arena.is-preparing #mode{display:none}
@media(max-width:800px){.arena.is-preparing .viewport{height:260px}.spinner{width:14px;height:14px}.video-message{flex-wrap:wrap}.intro{margin-bottom:16px}}
@media(prefers-reduced-motion:reduce){.spinner{animation:none;border-style:dotted}}

.scenario-image{position:relative}.scenario-image>.spinner{position:absolute;top:calc(50% - 8px);left:calc(50% - 8px);color:var(--sea)}.scenario-image[data-loaded="true"]>.spinner{display:none}.starting-image{display:none}.arena.is-preparing video{display:none}.arena.is-preparing .starting-image{display:block;width:100%;height:100%;object-fit:contain;background:#d4e0e4}.allowance .spinner{width:12px;height:12px}

/* Short first-visit guide, with the same steps available from navigation. */
#quick-guide{width:min(520px,calc(100vw - 32px));max-height:calc(100dvh - 40px);overflow:auto;border:1px solid var(--line);border-radius:20px;padding:28px;color:var(--ink);background:var(--white);box-shadow:0 24px 90px #173c4930}
#quick-guide::backdrop{background:#193c4970;backdrop-filter:blur(3px)}
.guide-top,.guide-actions{display:flex;align-items:center;justify-content:space-between;gap:12px}.guide-top{font-size:12px;color:var(--muted);margin-bottom:24px}.guide-actions{margin-top:24px}.guide-actions .primary{margin-left:auto}
#guide-title{font-size:25px;line-height:1.25}#guide-description{color:var(--muted);font-size:15px;min-height:90px;margin-bottom:0}.guide-art{display:flex;gap:10px;margin:12px 0 28px;min-height:100px;align-items:center;justify-content:center;padding:20px;background:var(--mist);border-radius:12px}.guide-art span{display:grid;place-items:center;min-width:55px;min-height:50px;padding:10px;background:white;border:1px solid var(--line);border-radius:9px;font-weight:700;font-size:14px}.guide-art span:first-child{color:var(--sea)}.guide-art span:nth-child(2){color:#8e543c}
.instruction-list{list-style:none;counter-reset:step;padding:0}.instruction-list>li{counter-increment:step;position:relative;padding:0 0 16px 54px;border-bottom:1px solid var(--line);margin:28px 0}.instruction-list>li::before{content:counter(step);position:absolute;left:0;top:0;width:34px;height:34px;display:grid;place-items:center;background:var(--mist);color:var(--sea);border-radius:50%;font-weight:700}.instruction-list h2{margin-top:0;font-size:20px}.citation-code{padding:16px;background:#fff;border:1px solid var(--line);border-radius:10px;white-space:pre-wrap;overflow-wrap:anywhere}#citation-status{font-size:12px;margin-left:8px}.prose>h1{margin-bottom:20px}
@media(max-width:800px){nav{flex-wrap:wrap}.nav{padding:7px 10px}#quick-guide{padding:20px}.guide-art{gap:6px;padding:12px}.guide-art span{min-width:42px;padding:8px;font-size:12px}#guide-title{font-size:22px}.instruction-list>li{padding-left:46px}}

.path-length{display:inline-block;margin-left:12px;color:var(--muted);font-size:12px}.last-result{margin:0;padding:14px 24px;border-top:1px solid var(--line);font-size:13px}.last-result p{margin:10px 0}.last-result a,.last-result button{margin-left:12px}#last-result-status{margin-left:12px}.allowance a{margin-left:10px}

#rank-controls{flex-wrap:wrap}#last-result-content{display:flex;flex-wrap:wrap;gap:8px 24px}#last-result-content p{margin:8px 0}#status a{white-space:nowrap}