@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Georgian:wght@400;500;600;700;800;900&display=swap');
:root{color-scheme:light;--bg:#f7f8fc;--card:#fff;--ink:#172139;--muted:#647089;--line:#dfe4ef;--accent:#b9eb67;--accent-ink:#182713;--soft:#edf1f8;--warm:#fff0c8;--glass:#f7f8fce8;--shadow:0 18px 45px #182c4b0b;--mint:#187c69;--purple:#7355b2;--orange:#a85726;--blue:#376dcc;--rose:#a84b78}
body.dark{color-scheme:dark;--bg:#0d1324;--card:#171f34;--ink:#f1f4fd;--muted:#a5afc6;--line:#2b3550;--accent:#c7f57c;--accent-ink:#17220e;--soft:#202b42;--warm:#3b3422;--glass:#0d1324eb;--shadow:0 20px 55px #0003;--mint:#7de1c7;--purple:#beabff;--orange:#ffbb88;--blue:#8ebaff;--rose:#f2a7d0}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;color:var(--ink);background:radial-gradient(ellipse at 85% 5%,#8a78eb13,transparent 32%),radial-gradient(ellipse at 0% 22%,#61d0ae0c,transparent 30%),var(--bg);font:15px/1.65 'Noto Sans Georgian',system-ui,sans-serif;-webkit-font-smoothing:antialiased}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:12px;padding:11px 17px;font-weight:600;transition:background .2s,border-color .2s,transform .2s,box-shadow .2s}button:hover:not(:disabled){background:var(--soft);border-color:var(--muted);transform:translateY(-2px)}button:active:not(:disabled){transform:translateY(0) scale(.98)}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--purple);outline-offset:4px}button.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);font-weight:800}button.primary:hover:not(:disabled){background:var(--accent);border-color:var(--accent);box-shadow:0 7px 24px #a2db4330}.quiet-button{border-color:transparent;background:transparent}.quiet-button:hover:not(:disabled){border-color:transparent}button span[aria-hidden]{margin-left:8px}
header{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:17px max(24px,calc((100vw - 1180px)/2));background:var(--glass);border-bottom:1px solid var(--line);backdrop-filter:blur(20px)}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);flex-shrink:0}.brand-mark{display:grid;place-items:center;width:41px;height:41px;border-radius:13px;background:var(--accent);color:var(--accent-ink);font-size:19px;font-weight:900;letter-spacing:-.06em;line-height:1}.brand span{font-size:15px;font-weight:900;line-height:1.2}.brand span small{display:block;margin-top:4px;color:var(--muted);font-size:9px;font-weight:600;letter-spacing:0}.footer-brand{display:flex;align-items:center;gap:10px}.footer-brand>span{display:block}.footer-brand small{margin:4px 0 0}nav,.account-actions{display:flex;align-items:center;gap:5px}nav button{border:0;background:transparent;color:var(--muted);padding:10px 13px;font-size:13px}nav button:hover:not(:disabled){color:var(--ink);background:var(--soft);border-color:transparent}.account-actions button{font-size:12px}.account-actions #account{background:transparent;border-color:transparent}.account-actions #theme{border-radius:50%;width:38px;height:38px;padding:0;font-size:20px}.account-actions #joinButton{padding:11px 14px}
main{max-width:1180px;margin:0 auto;padding:46px 24px 64px;min-height:75vh}h1,h2,h3{line-height:1.45;overflow-wrap:anywhere}h1{font-size:clamp(32px,4.2vw,56px);font-weight:900;letter-spacing:-1.5px;margin:16px 0 20px}h2{font-size:24px;font-weight:800;margin:10px 0 14px}p{color:var(--muted);line-height:1.9}a{color:var(--mint)}.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--muted);font-size:11px;font-weight:700;letter-spacing:.03em}.live-dot{height:7px;width:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 5px #6bd5b712}.hero{display:grid;grid-template-columns:1.2fr 1fr;align-items:center;gap:48px;min-height:410px;padding:15px 0 42px}.hero-copy h1{max-width:620px}.hero h1 em{font-style:normal;color:var(--mint)}.intro{max-width:560px;font-size:15px;line-height:2;margin-bottom:25px}.hero-actions{display:flex;align-items:center;gap:9px;flex-wrap:wrap}.hero-actions .primary{padding:15px 22px;border-radius:14px}.hero-actions .quiet-button{font-size:13px}.stats{display:flex;flex-wrap:wrap;gap:30px;margin-top:30px;font-size:11px;color:var(--muted)}.stats>span{border-right:1px solid var(--line);padding-right:28px}.stats>span:last-child{border-right:0;padding-right:0}.stats strong{display:block;font-size:25px;line-height:1.5;color:var(--ink);font-weight:800;letter-spacing:-.7px}
.play-art{position:relative;min-height:360px;isolation:isolate;display:grid;place-items:center}.art-orbit{position:absolute;border:1px dashed var(--line);border-radius:50%;z-index:-1;pointer-events:none}.orbit-one{width:330px;height:330px;transform:rotate(-20deg)}.orbit-two{width:410px;height:270px;transform:rotate(35deg)}.art-main{position:relative;width:285px;padding:22px 24px 25px;border:1px solid var(--line);border-radius:24px;background:linear-gradient(145deg,var(--card),var(--soft));box-shadow:var(--shadow);transform:rotate(-6deg)}.art-card-top{display:flex;justify-content:space-between;font-size:10px;color:var(--muted)}.art-card-top>span:last-child{color:var(--mint);font-size:19px}.art-symbol{font-size:70px;color:var(--purple);font-weight:900;line-height:1;margin:18px 0 10px}.art-main h2{font-size:24px;letter-spacing:-.6px;margin:0 0 20px}.art-options{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.art-options>span{position:relative;display:grid;place-items:center;border:1px solid var(--line);border-radius:10px;padding:10px;font-size:14px;background:var(--card);color:var(--muted)}.art-options .art-selected{color:var(--accent-ink);background:var(--accent);border-color:var(--accent)}.art-selected b{position:absolute;top:-7px;right:-5px;display:grid;place-items:center;width:17px;height:17px;border-radius:50%;background:var(--mint);color:var(--bg);font-size:10px}.art-float{position:absolute;display:flex;align-items:center;gap:10px;background:var(--card);box-shadow:var(--shadow);border:1px solid var(--line);border-radius:14px;padding:12px 16px;font-size:12px;font-weight:700;z-index:1;animation:float-soft 7s ease-in-out infinite}.float-top{top:18px;right:0;transform:rotate(5deg)}.float-bottom{bottom:2px;left:0;animation-delay:-3s}.art-float small{display:block;font-size:9px;color:var(--muted);margin-top:3px;font-weight:400}.mini-icon{color:var(--purple);background:var(--soft);border-radius:10px;padding:4px 9px;font-size:23px}.float-bottom .mini-icon{color:var(--mint)}.art-spark{position:absolute;color:var(--purple);font-size:30px}.spark-one{right:14px;bottom:60px;color:var(--mint);font-size:48px}.spark-two{left:15px;top:50px}
.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:25px;box-shadow:0 5px 20px #00000002}.daily-banner{display:flex;align-items:center;gap:24px;position:relative;overflow:hidden;margin:20px 0 54px;background:linear-gradient(110deg,var(--card),var(--soft));border-color:var(--line);padding:28px 30px}.daily-banner:after{content:'';position:absolute;width:160px;height:160px;border:1px solid #c1a2ff20;border-radius:50%;right:-60px;top:-80px;pointer-events:none}.daily-emblem{width:65px;height:65px;display:grid;place-items:center;flex-shrink:0;border:1px solid var(--line);border-radius:18px;color:var(--purple);font-size:42px;background:var(--soft)}.daily-copy{flex:1}.daily-copy .eyebrow{color:var(--purple)}.daily-copy h2{font-size:23px;margin:4px 0 6px}.daily-copy p{font-size:12px;margin:0}.daily-banner>button{font-size:12px;flex-shrink:0;padding:14px 17px}.catalog-section{scroll-margin-top:120px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:20px}.section-heading h2{font-size:30px;margin:5px 0;letter-spacing:-.7px}.heading-dot{color:var(--mint)}.tag{display:inline-flex;align-items:center;background:var(--soft);color:var(--mint);border-radius:8px;padding:5px 9px;font-size:10px;font-weight:700;line-height:1.7}.count-tag{color:var(--muted);font-weight:500}.topic-chips{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 18px}.topic-chip{font-size:10px;font-weight:500;padding:8px 12px;border-radius:9px;display:inline-flex;gap:6px;align-items:center;background:transparent}.topic-chip>span{font-size:15px;color:var(--tone,var(--mint))}.topic-chip.selected{border-color:var(--tone,var(--mint));background:var(--soft);color:var(--ink)}.catalog-section>.row{display:grid;grid-template-columns:1fr 1.5fr;gap:14px;margin:12px 0 22px}.catalog-section>.row label{font-size:11px;color:var(--muted);margin:0}.tone-0{--tone:var(--mint)}.tone-1{--tone:var(--purple)}.tone-2{--tone:var(--rose)}.tone-3{--tone:var(--orange)}.tone-4{--tone:var(--blue)}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.quiz-tile{display:flex;flex-direction:column;position:relative;overflow:hidden;padding:23px;transition:border-color .25s,transform .25s,box-shadow .25s;animation:rise-in .4s both;animation-delay:calc(var(--i,0)*35ms)}.quiz-tile:before{content:'';position:absolute;top:0;left:23px;right:23px;height:2px;background:var(--tone,var(--purple));opacity:.65;transition:opacity .2s}.quiz-tile:hover{transform:translateY(-5px);border-color:var(--tone,var(--purple));box-shadow:var(--shadow)}.tile-top{display:flex;align-items:center;gap:10px;margin-bottom:12px}.tile-top .tag{font-size:9px;color:var(--tone);background:transparent;padding:0;font-weight:500}.topic-icon{display:grid;place-items:center;flex-shrink:0;width:39px;height:39px;background:var(--soft);border-radius:11px;font-size:24px;color:var(--tone,var(--purple))}.quiz-tile h2{font-size:18px;font-weight:700;margin:0 0 13px;line-height:1.75}.quiz-meta{display:flex;flex-wrap:wrap;gap:16px;font-size:10px;margin:0 0 22px}.tile-play{display:flex;justify-content:space-between;align-items:center;font-size:11px;padding:13px 0 0;margin-top:auto;border:0;border-top:1px solid var(--line);border-radius:0;background:transparent;text-align:left;width:100%;color:var(--ink)}.tile-play>span{color:var(--tone);font-size:20px;line-height:1}.tile-play:hover:not(:disabled){background:transparent;border-color:var(--tone);color:var(--tone);transform:none}.empty-tile{border-style:dashed;justify-content:center}.empty-tile h2{margin-top:15px}.catalog-pagination{display:flex;align-items:center;justify-content:flex-end;gap:8px;margin-top:20px}.catalog-pagination p{margin-right:auto;font-size:11px}.catalog-pagination button{font-size:11px}.how-it-works{display:flex;justify-content:space-between;gap:20px;padding:25px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:44px;color:var(--muted);font-size:12px}.how-it-works b{color:var(--purple);font-size:11px;margin-right:10px}.rules-note{font-size:11px;max-width:750px;margin:22px 0 0}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.notice{background:var(--warm);padding:15px 18px;border-radius:12px;color:var(--ink);font-size:12px;line-height:1.9;margin:20px 0}.demo-notice{border:1px dashed var(--line);background:transparent;color:var(--muted)}
.quiz{max-width:790px;margin:auto;animation:rise-in .22s both}.quiz>.row{font-size:12px;gap:15px}.quiz .card{padding:30px}.quiz h2{font-size:23px;line-height:1.9;margin:15px 0 24px}.progress{height:5px;background:var(--line);border-radius:20px;margin:22px 0;overflow:hidden}.progress>div{height:100%;border-radius:20px;background:linear-gradient(90deg,var(--mint),var(--accent));transition:width .3s}.options{display:grid;gap:11px}.option{text-align:left;display:flex;align-items:center;gap:14px;padding:17px;line-height:1.8;font-weight:500;font-size:14px;border-radius:13px}.option b{display:grid;place-items:center;flex-shrink:0;height:32px;width:32px;background:var(--soft);border-radius:8px;font-size:13px;color:var(--mint)}.option:hover:not(:disabled){border-color:var(--mint);transform:translateX(3px);box-shadow:0 3px 10px #00000008}.option.correct{border:2px solid var(--mint);background:var(--soft)}.option.wrong{border:2px solid #d77582}.feedback{margin-top:20px;padding:22px;background:var(--soft);border-radius:15px}.feedback a,.review a{color:var(--mint);overflow-wrap:anywhere}.feedback p{color:var(--ink);margin:8px 0}.score{font-size:80px;color:var(--mint);font-weight:900;letter-spacing:-3px;animation:score-in .5s both}.empty{text-align:center;padding:40px}.empty>button{margin:5px}.leader{display:grid;grid-template-columns:42px 1fr auto;gap:16px;padding:20px 0;border-bottom:1px solid var(--line);align-items:center}.leader>b{display:grid;place-items:center;border-radius:11px;background:var(--soft);width:34px;height:34px;color:var(--muted)}.leader:first-child>b{background:var(--accent);color:var(--accent-ink)}.leader:nth-child(2)>b{color:var(--purple)}.leader:nth-child(3)>b{color:var(--orange)}.leader strong{color:var(--mint);font-size:21px}.error{color:#da7b89;line-height:1.9}
label{display:block;margin:14px 0;font-size:12px;color:var(--muted);line-height:1.9}input,select,textarea{display:block;width:100%;padding:12px 13px;border-radius:11px;border:1px solid var(--line);background:var(--bg);color:var(--ink);margin-top:6px;font-size:13px;transition:border-color .2s,box-shadow .2s}input::placeholder,textarea::placeholder{color:var(--muted);opacity:.8}input:hover,select:hover,textarea:hover{border-color:var(--muted)}input:focus,select:focus,textarea:focus{border-color:var(--mint)}textarea{min-height:100px;resize:vertical}input[type=checkbox]{display:inline;width:19px;height:19px;vertical-align:middle;padding:0;margin:0 7px 0 0;accent-color:var(--mint)}input[type=file]{font-size:12px;padding:15px}input[type=file]::file-selector-button{background:var(--soft);color:var(--ink);border:1px solid var(--line);padding:9px 13px;border-radius:8px;margin-right:12px;font:inherit;cursor:pointer}select{appearance:auto}button:focus-visible{border-color:var(--purple)}
dialog{max-width:500px;width:calc(100% - 32px);max-height:90dvh;overflow:auto;border:1px solid var(--line);border-radius:25px;background:var(--card);color:var(--ink);padding:30px;box-shadow:0 40px 100px #0006}dialog[open]{animation:dialog-in .22s both}dialog::backdrop{background:#070c1dbb;backdrop-filter:blur(6px)}dialog h2{font-size:26px;margin:10px 0;line-height:1.6}dialog p{font-size:12px}.auth-tabs{display:flex;gap:5px;padding:5px;border-radius:12px;border:1px solid var(--line);background:var(--bg);margin:20px 0}.auth-tabs button{flex:1;border-color:transparent;background:transparent;font-size:12px;padding:9px}.auth-tabs button.primary{background:var(--accent);color:var(--accent-ink)}#authForm>.row{gap:5px}#authForm #login{width:100%;margin-top:7px}#authForm #signup{flex:1;font-size:10px;padding:10px 0}#closeAuth{font-size:10px;border-color:transparent;background:transparent}#authMessage{color:var(--rose)}footer{max-width:1132px;margin:auto;padding:24px 0 32px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:15px;align-items:center;color:var(--muted);font-size:12px}footer>span{font-weight:600}footer small{display:block;font-weight:400;font-size:10px;margin:6px 0 0 19px}footer button{font-size:10px;background:transparent;border-color:transparent;color:var(--muted)}
.admin-tabs{margin:25px 0;padding:6px;background:var(--card);border:1px solid var(--line);border-radius:15px}.admin-tabs button{flex:1;font-size:12px;border-color:transparent;background:transparent}.admin-tabs button.primary{background:var(--accent)}#adminContent{animation:rise-in .25s both}#adminContent h2{font-size:22px}#editorSearchForm label,#questionSearchForm label{flex:1;min-width:160px}#editorSearchForm>button,#questionSearchForm>button{margin-top:20px;font-size:12px}#quizEditorRows .card{padding:20px}#quizEditorRows label{margin:10px 0}#quizEditorRows input{padding:10px}.review{margin:18px 0}.review li{margin:8px}.review h2{font-size:20px}.review .row button{font-size:11px}summary{cursor:pointer;line-height:1.9;font-weight:600;list-style-position:inside}summary .tag{margin-left:7px}details[open]>summary{padding-bottom:15px;border-bottom:1px solid var(--line)}#editorPages,#questionPages{margin-top:18px;justify-content:flex-end}#editorSummary,#questionSummary,#importProgress{font-size:12px}[hidden]{display:none!important}
@keyframes rise-in{from{opacity:0;translate:0 12px}to{opacity:1;translate:0 0}}@keyframes float-soft{0%,100%{translate:0 0}50%{translate:0 -7px}}@keyframes dialog-in{from{opacity:0;transform:translateY(12px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes score-in{from{opacity:0;transform:scale(.92)}to{opacity:1;transform:scale(1)}}
@media(min-width:1500px){main{padding-top:65px}.hero{min-height:450px}}
@media(max-width:1050px){.hero{gap:20px;grid-template-columns:1.1fr 1fr}.hero h1{font-size:46px;letter-spacing:-1px}.play-art{scale:.9}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.daily-banner{gap:17px;padding:24px}.daily-copy h2{font-size:20px}.stats{gap:20px}.stats>span{padding-right:20px}header{padding:15px 22px;gap:12px}nav button{padding:8px 10px}footer{margin:0 24px}.hero-actions .quiet-button{font-size:11px}}
@media(max-width:760px){header{flex-wrap:wrap;gap:10px;padding:12px 17px}.brand span{font-size:11px}.brand-mark{width:35px;height:35px;font-size:27px;border-radius:10px}nav{order:3;width:100%;justify-content:center;border-top:1px solid var(--line);padding-top:7px}nav button{flex:1;font-size:12px;padding:7px}.account-actions{margin-left:auto;gap:0}.account-actions #joinButton{padding:9px 10px;font-size:10px}.account-actions #account{font-size:10px;padding:9px}.account-actions #theme{width:31px;height:31px;font-size:19px}main{padding:26px 18px 40px}.hero{grid-template-columns:1fr;gap:12px;padding:4px 0 25px}.hero h1{font-size:clamp(33px,7vw,48px);margin:13px 0 17px}.hero .eyebrow{font-size:9px;letter-spacing:0}.intro{font-size:13px;max-width:580px}.hero-actions .primary{padding:13px 19px;font-size:12px}.hero-actions .quiet-button{font-size:11px}.stats{gap:18px;margin-top:24px;font-size:10px}.stats strong{font-size:23px}.stats>span{padding-right:18px}.play-art{min-height:295px;scale:1;margin-top:12px}.art-main{width:240px;padding:18px 20px}.art-main h2{font-size:21px}.art-symbol{font-size:51px;margin-top:12px}.art-card-top{font-size:8px}.orbit-one{width:270px;height:270px}.orbit-two{width:320px;height:220px}.art-float{font-size:10px;padding:9px 12px}.float-top{right:8%;top:15px}.float-bottom{left:5%;bottom:5px}.art-float small{font-size:8px}.spark-one{right:7%;font-size:36px;bottom:50px}.spark-two{left:9%;top:40px}.daily-banner{flex-wrap:wrap;padding:21px;margin:15px 0 36px;gap:14px;border-radius:17px}.daily-emblem{width:46px;height:46px;font-size:29px;border-radius:13px}.daily-copy{min-width:200px}.daily-copy h2{font-size:17px}.daily-copy p{font-size:10px}.daily-copy .eyebrow{font-size:9px}.daily-banner>button{width:100%;font-size:11px;padding:12px}.section-heading h2{font-size:24px}.section-heading .eyebrow{font-size:10px}.topic-chip{font-size:9px;padding:7px 9px}.catalog-section>.row{grid-template-columns:1fr;gap:9px}.grid{gap:12px}.quiz-tile{padding:18px}.quiz-tile h2{font-size:16px;line-height:1.8}.tile-top{gap:8px}.tile-top .tag{font-size:8px}.topic-icon{width:32px;height:32px;font-size:22px;border-radius:9px}.quiz-meta{font-size:9px;gap:9px}.tile-play{font-size:10px}.how-it-works{gap:13px;flex-wrap:wrap;font-size:10px;padding:20px 0;margin-top:30px}.how-it-works b{margin-right:5px}.rules-note{font-size:10px}.card{padding:21px}.quiz .card{padding:22px 18px}.quiz h2{font-size:19px}.option{font-size:13px;padding:14px;gap:12px}.quiz>.row{font-size:10px}.quiz>.row .tag{max-width:100%;font-size:9px}.admin-tabs{gap:4px;padding:5px}.admin-tabs button{flex:1 1 30%;font-size:10px;padding:9px}.stats{row-gap:10px}dialog{padding:24px}dialog h2{font-size:23px}footer{margin:0 18px;font-size:10px}footer small{font-size:9px}}
@media(max-width:480px){.grid{grid-template-columns:1fr}.quiz-tile h2{font-size:18px}.quiz-tile .tile-top .tag{font-size:10px}.quiz-meta{font-size:10px}.tile-play{font-size:11px}.play-art{min-height:285px}.float-top{right:0}.float-bottom{left:0}.count-tag{font-size:9px}.section-heading h2{font-size:22px}.leader{gap:10px;font-size:12px}.leader strong{font-size:18px}#editorSearchForm label,#questionSearchForm label{min-width:100%;margin:7px 0}#editorSearchForm>button,#questionSearchForm>button{margin-top:5px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.quiz-tile:hover,.option:hover:not(:disabled),button:hover:not(:disabled){transform:none}}

nav button.nav-active{background:var(--soft);color:var(--ink)}@media(max-width:760px){.play-art{overflow:hidden;border-radius:24px}}

/* Home, catalog and leaderboard refresh */
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
header{min-height:72px;box-shadow:0 5px 24px #101a2b08}
nav button{border-radius:10px}
main{animation:rise-in .25s both}
.hero h1 em{background:linear-gradient(90deg,var(--mint),var(--purple));-webkit-background-clip:text;background-clip:text;color:transparent}
.daily-banner{border-color:color-mix(in srgb,var(--mint) 24%,var(--line));background:linear-gradient(115deg,var(--card),color-mix(in srgb,var(--mint) 9%,var(--soft)) 62%,color-mix(in srgb,var(--accent) 12%,var(--card)))}
.daily-banner>button{position:relative;z-index:1}
.home-categories{margin:10px 0 48px}
.category-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
.category-tile{position:relative;display:flex;min-height:152px;flex-direction:column;align-items:flex-start;justify-content:flex-end;overflow:hidden;padding:17px;text-align:left;border:1px solid var(--line);border-radius:17px;background:linear-gradient(145deg,var(--card),color-mix(in srgb,var(--tone) 7%,var(--card)));transition:transform .2s,border-color .2s,box-shadow .2s}
.category-tile:before{position:absolute;inset:0 auto 0 0;width:4px;background:var(--tone);content:''}
.category-tile:after{position:absolute;top:-35px;right:-26px;width:100px;height:100px;border:1px solid color-mix(in srgb,var(--tone) 25%,transparent);border-radius:50%;box-shadow:0 0 0 16px color-mix(in srgb,var(--tone) 5%,transparent);content:''}
.category-tile:hover:not(:disabled){transform:translateY(-4px);border-color:var(--tone);box-shadow:var(--shadow)}
.category-tile .category-index{position:absolute;top:11px;left:16px;color:var(--tone);font-size:10px;font-weight:800}
.category-icon{position:absolute;top:12px;right:15px;color:var(--tone);font-size:23px}
.category-tile strong{max-width:100%;font-size:12px;line-height:1.65}
.category-count{margin-top:5px;color:var(--muted);font-size:10px}
.category-arrow{position:absolute;right:14px;bottom:12px;color:var(--tone);font-size:17px}
.home-bottom{display:grid;grid-template-columns:.85fr 1.15fr;align-items:center;gap:28px;padding:25px 0;border-top:1px solid var(--line)}
.home-bottom h2{margin:7px 0 0;font-size:20px;line-height:1.7}
.home-bottom .how-it-works{margin:0;padding:0;border:0}
.catalog-page,.rank-page{max-width:1040px;margin:0 auto;animation:rise-in .25s both}
.catalog-heading,.rank-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin:0 0 25px}
.catalog-heading h1,.rank-heading h1{margin:6px 0;font-size:clamp(34px,4.2vw,50px)}
.catalog-heading p,.rank-heading p{max-width:650px;margin:0;font-size:13px}
.catalog-total{display:flex;min-width:145px;flex-direction:column;align-items:center;padding:13px 16px;border:1px solid var(--line);border-radius:15px;background:var(--card);color:var(--muted);font-size:10px}
.catalog-total strong{color:var(--mint);font-size:27px;line-height:1.35}
.topic-chips{gap:8px;margin:0 0 14px}
.topic-chip{border-radius:999px;background:color-mix(in srgb,var(--soft) 70%,transparent);color:var(--muted);padding:8px 13px}
.topic-chip.selected{border-color:var(--tone,var(--mint));background:var(--tone,var(--mint));color:#fff;box-shadow:0 5px 14px color-mix(in srgb,var(--tone,var(--mint)) 20%,transparent)}
.catalog-toolbar{display:grid;grid-template-columns:minmax(0,1fr) 210px;align-items:end;gap:13px;padding:14px 16px;border:1px solid var(--line);border-radius:17px;background:var(--card);box-shadow:0 7px 24px #101a2b06}
.catalog-search-wrap{position:relative}
.catalog-search-wrap>span{position:absolute;top:10px;left:13px;color:var(--mint);font-size:22px;line-height:1}
.catalog-search-wrap input{height:45px;margin:0;padding-left:43px;background:var(--bg)}
.catalog-sort-label{margin:0;font-size:10px}
.catalog-sort-label select{height:45px;margin:0;background:var(--bg)}
.catalog-result-count{margin:13px 0 3px;color:var(--muted);font-size:11px;font-weight:700}
.quiz-catalog{margin-top:8px}
.quiz-catalog .quiz-tile{min-height:228px}
.quiz-catalog .quiz-meta{margin-top:auto}
.empty-catalog{display:grid;grid-template-columns:minmax(220px,360px) 1fr;align-items:center;gap:22px;margin-top:24px}
.empty-catalog>p{font-size:12px}
.rank-heading{align-items:center}
.rank-mark{display:grid;width:72px;height:72px;place-items:center;border:1px solid color-mix(in srgb,var(--mint) 25%,var(--line));border-radius:22px;background:linear-gradient(145deg,var(--soft),var(--card));color:var(--mint);font-size:38px;font-weight:900;transform:rotate(5deg)}
.rank-tabs{display:flex;gap:6px;overflow-x:auto;padding:6px;border:1px solid var(--line);border-radius:16px;background:var(--card)}
.rank-tabs button{flex:1 0 auto;border-color:transparent;background:transparent;color:var(--muted);font-size:11px}
.rank-tabs button.selected{background:var(--soft);color:var(--mint);font-weight:800}
.rank-controls{display:flex;align-items:center;gap:12px;min-height:58px;margin-top:12px}
.rank-controls label{width:min(100%,440px);margin:0}
.rank-controls select{margin:0}
.rank-periods{display:flex;flex-wrap:wrap;gap:7px}
.rank-periods button{padding:9px 13px;font-size:10px}
.rank-periods button.selected{border-color:var(--mint);background:var(--soft);color:var(--mint)}
.rank-explainer{margin:8px 0 14px;font-size:11px}
.rank-board{padding:8px 23px;border-radius:18px}
.leader{grid-template-columns:46px minmax(0,1fr) auto;padding:16px 0}
.leader-place{font-variant-numeric:tabular-nums}
.leader-name{font-size:12px;font-weight:700}
.leader-name small{display:block;margin-top:3px;color:var(--muted);font-size:9px;font-weight:400}
.leader strong{font-variant-numeric:tabular-nums}
.rank-empty{text-align:center;padding:44px 15px}
.rank-empty>span{color:var(--mint);font-size:28px}
.rank-empty h2{margin:8px 0;font-size:18px}
.rank-empty p{font-size:11px}
.loading-line{padding:24px;text-align:center;color:var(--muted);font-size:12px}
@media(max-width:1000px){.category-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:760px){
  header{gap:9px}
  nav{justify-content:space-between;overflow-x:auto}
  nav button{white-space:nowrap}
  .category-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}
  .category-tile{min-height:128px;padding:13px}
  .home-bottom{grid-template-columns:1fr;gap:12px}
  .home-bottom .how-it-works{justify-content:flex-start}
  .catalog-heading,.rank-heading{align-items:flex-start}
  .catalog-toolbar{grid-template-columns:1fr;gap:9px}
  .catalog-sort-label{display:grid;grid-template-columns:80px minmax(0,1fr);align-items:center;gap:8px}
  .catalog-sort-label select{margin:0}
  .empty-catalog{grid-template-columns:1fr}
  .rank-mark{width:55px;height:55px;flex:0 0 55px;font-size:28px}
  .rank-tabs button{padding:9px 11px}
  .rank-controls{align-items:flex-start;flex-direction:column;padding:8px 0}
  .rank-board{padding:5px 15px}
}
@media(max-width:480px){
  .category-tile strong{font-size:10px}
  .catalog-total{min-width:0;flex-direction:row;gap:7px;padding:8px 11px}
  .catalog-total strong{font-size:17px}
  .catalog-heading{display:block}
  .catalog-total{display:inline-flex;margin-top:12px}
  .catalog-heading h1,.rank-heading h1{font-size:32px}
  .rank-heading p{font-size:11px}
  .rank-tabs{justify-content:flex-start}
  .leader{grid-template-columns:36px minmax(0,1fr) auto;gap:9px}
}
@media(prefers-reduced-motion:reduce){.category-tile:hover:not(:disabled){transform:none}}