@font-face{font-family:Arena;src:local('Avenir Next Condensed');font-weight:100 900;font-display:swap}*{box-sizing:border-box} :root{--bg:#f2f1e9;--ink:#102c29;--muted:#576762;--line:#cbd0c5;--lime:#ddf36b;--blue:#87d3ff;--orange:#ffaf73}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 'Avenir Next',Avenir,'Segoe UI',sans-serif}button,input{font:inherit}button,a,input{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}button{border:0}a{color:inherit;text-decoration:none}::selection{background:var(--lime);color:var(--ink)}:focus-visible{outline:3px solid #357aa4;outline-offset:4px}input{caret-color:var(--ink)}[hidden]{display:none!important}.topbar{height:96px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;margin:0 5vw}.brand{display:flex;gap:12px;align-items:center;font-weight:900;letter-spacing:-.03em;font-size:22px}.brandmark{display:grid;place-items:center;background:var(--ink);color:var(--lime);width:38px;height:42px;font-size:35px;transform:skew(-8deg)}.brand-dot{width:8px;height:8px;background:#69933d;border-radius:50%;align-self:flex-end;margin-bottom:10px}.quiet{background:transparent;color:var(--ink);padding:10px 8px;font-weight:650}.quiet:hover{text-decoration:underline;text-underline-offset:5px}main{max-width:1600px;margin:auto;padding:54px 5vw 44px}h1,h2,h3,p{margin-top:0}h1{font-family:Arena,'Arial Narrow',sans-serif;font-size:clamp(52px,5.6vw,88px);line-height:1.02;letter-spacing:-.035em;font-weight:850;margin-bottom:24px}h1 em{font-style:normal;color:#50713a}.home{display:grid;grid-template-columns:1fr 1.05fr;gap:48px 6vw}.intro>p{font-size:18px;line-height:1.65;color:var(--muted)}.intro-meta{display:flex;gap:0;margin:24px 0 32px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.07em}.intro-meta span+span{border-left:1px solid #b7c2b5;padding-left:13px;margin-left:13px}.entry{max-width:540px}.entry>label{font-size:13px;font-weight:700;display:block;margin-bottom:8px}input:not([type=radio]){border:1px solid #a9b8a7;border-radius:6px;padding:13px 15px;background:#fcfcf7;color:var(--ink);min-width:0}input::placeholder{color:#667467}.entry>input{width:100%}.entry-buttons{display:flex;gap:10px;margin-top:12px}.primary,.secondary{border-radius:6px;padding:14px 20px;font-weight:750;transition:background .15s,transform .15s}.primary{background:var(--ink);color:var(--lime)}.primary:hover{background:#285047;transform:translateY(-1px)}.secondary{background:#e3e7d9;color:var(--ink)}.secondary:hover{background:#d4dcc6}.entry-buttons .primary{flex:1;display:flex;justify-content:space-between;gap:15px}.join-row{display:flex;align-items:center;gap:10px;border-top:1px solid var(--line);margin-top:23px;padding-top:16px}.join-row label{font-size:14px}.join-row input{width:110px;text-transform:uppercase;font-weight:700;letter-spacing:.1em;padding:9px}.join-row button{margin-left:auto}.arena-preview{background:var(--ink);color:#e8eedc;border-radius:12px;align-self:stretch;min-height:540px;display:flex;flex-direction:column;overflow:hidden}.preview-top,.preview-bottom{display:flex;justify-content:space-between;padding:24px 28px;font-size:10px;letter-spacing:.12em;font-weight:700}.preview-top{border-bottom:1px solid #416057}.live-dot{color:var(--lime)}.preview-pitch{flex:1;position:relative;margin:32px 24px 24px;border:1px solid #587869;min-height:360px;background:repeating-linear-gradient(90deg,#183b31 0%,#183b31 16.66%,#1c4136 16.66%,#1c4136 33.33%)}.center-line{position:absolute;left:50%;height:100%;border-left:1px solid #719080;top:0}.center-circle{position:absolute;left:50%;top:50%;width:27%;aspect-ratio:1;transform:translate(-50%,-50%);border:1px solid #719080;border-radius:50%}.penalty{position:absolute;top:28%;width:16%;height:44%;border:1px solid #719080}.left{left:0}.right{right:0}.goal{position:absolute;top:42%;width:4%;height:16%;border:2px solid #b6c9b5}.goal.left{left:-4%}.goal.right{right:-4%}.player,.field-player{position:absolute;border-radius:50%;display:grid;place-items:center;background:var(--blue);color:#143848;font-weight:900;width:44px;height:44px;box-shadow:0 7px 18px #041d2866}.player{transform:translate(-50%,-50%)}.p1{left:21%;top:70%}.p2{left:43%;top:34%}.p3{left:72%;top:53%}.opponent{background:var(--orange);color:#67350e}.o1{left:75%;top:19%}.o2{left:86%;top:77%}.play-lines{position:absolute;inset:0;width:100%;height:100%;fill:none;stroke:var(--lime);stroke-width:2;stroke-dasharray:7 7}.ball{width:24px;height:24px;background:var(--lime);border:5px solid #fcffe7;border-radius:50%;box-shadow:0 4px 12px #092a2688}.preview-ball{position:absolute;left:74%;top:62%}.calculation{position:absolute;bottom:18px;left:20px;background:#edf2d9;color:var(--ink);padding:12px 18px;transform:rotate(-4deg);border-radius:4px;box-shadow:0 8px 24px #061e2450}.calculation span{font-size:9px;font-weight:800;letter-spacing:.13em;display:block}.calculation strong{font-size:30px;letter-spacing:-.035em}.calculation i{font-style:normal;color:#63803a}.preview-bottom{color:var(--lime);align-items:center;padding-top:5px}.preview-bottom>span:last-child{font-size:32px}.how-strip{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);padding-top:25px;gap:30px}.how-strip b{font-size:16px}.how-strip p{color:var(--muted);font-size:14px;margin:6px 0}footer{margin:0 5vw;padding:24px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted);gap:15px}footer>span:first-child{font-weight:900;letter-spacing:.05em}.section-heading{display:flex;justify-content:space-between;align-items:start;margin-bottom:44px}.section-heading h1{font-size:60px}.lobby-layout{display:grid;grid-template-columns:1fr 2fr;gap:50px;min-height:390px}.room-ticket{background:var(--ink);color:var(--lime);padding:32px;border-radius:12px;align-self:start}.room-ticket>span{font-size:12px;letter-spacing:.13em}.room-ticket strong{display:block;font-size:clamp(32px,4vw,60px);letter-spacing:.09em;margin:14px 0 25px}.room-ticket p{font-size:13px;color:#c3d4ba;margin:18px 0 0}.teams{display:grid;grid-template-columns:1fr 1fr;gap:30px}.team-list h2{padding:12px 15px;border-radius:6px;background:#cde8f0}.team-list:last-child h2{background:#f3d9bd}.team-list p{padding:7px 15px;border-bottom:1px solid var(--line)}.lobby-actions{display:flex;gap:12px;margin-top:30px}.muted{color:var(--muted);font-size:14px}.match-header{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:28px}.match-header>span{font-size:12px;font-weight:700;letter-spacing:.08em}.scoreboard{display:flex;align-items:center;gap:26px;font-size:13px;font-weight:900}.scoreboard strong{font-size:46px;line-height:1;font-variant-numeric:tabular-nums;white-space:nowrap}.blue-text{color:#256288}.orange-text{color:#98480e}#timer{font-weight:750;font-variant-numeric:tabular-nums;margin-right:12px}.game-layout{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(310px,1fr);gap:34px}.match-pitch{height:370px;background:repeating-linear-gradient(90deg,#183b31 0%,#183b31 16.66%,#20463a 16.66%,#20463a 33.33%);border:20px solid var(--ink);outline:1px solid #65806e;outline-offset:-21px;position:relative;border-radius:10px}.match-ball{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);transition:left .75s cubic-bezier(.16,1,.3,1);z-index:2}.field-label{position:absolute;top:12px;font-size:10px;font-weight:800;letter-spacing:.1em}.blue-label{left:14px;color:var(--blue)}.orange-label{right:14px;color:var(--orange)}.field-player{width:34px;height:34px;font-size:12px}.fp1{left:18%;top:27%}.fp2{left:27%;top:70%}.fp3{right:18%;top:63%;background:var(--orange);color:#67350e}.fp4{right:28%;top:22%;background:var(--orange);color:#67350e}.field-status{display:flex;justify-content:space-between;font-size:12px;padding:15px 0;border-bottom:1px solid var(--line);gap:10px}.below-field{display:grid;grid-template-columns:1fr 1.25fr;gap:25px;margin-top:25px}.below-field h3{font-size:15px;margin-bottom:14px}.roster-row{display:flex;justify-content:space-between;gap:15px;font-size:13px;padding:8px 0;border-bottom:1px solid var(--line)}.roster-row>span:first-child{overflow-wrap:anywhere}.events{padding:0;list-style:none;font-size:12px;color:var(--muted)}.events li{margin-bottom:10px}.events li:first-child{color:var(--ink);font-weight:650}.task-panel{background:#fffef8;border:1px solid #d6dccd;border-radius:12px;padding:25px;align-self:start}.task-top{display:flex;justify-content:space-between;font-size:11px;text-transform:uppercase;font-weight:800;letter-spacing:.07em}.level-row{display:flex;justify-content:space-between;align-items:center;margin-top:20px}.level-row h2{font-size:23px;margin:0}.level-row>span{font-size:12px}.level-progress{display:flex;gap:5px;margin:13px 0 20px}.level-progress span{height:4px;background:#e1e6d7;flex:1}.level-progress .filled{background:#638340}.equation{font-weight:800;font-size:clamp(32px,3.6vw,53px);line-height:1.2;letter-spacing:-.035em;margin:18px 0 22px;font-variant-numeric:tabular-nums}.equation i{font-style:normal;color:#638340}.answer-inputs{display:flex;gap:12px}.answer-inputs label{font-size:12px;font-weight:650;flex:1}.answer-inputs input{display:block;width:100%;font-size:23px;margin-top:5px;padding:9px 12px}fieldset{border:0;padding:0;margin:24px 0 16px}legend{font-size:12px;font-weight:650;margin-bottom:9px}.tactics{display:flex;gap:7px}.tactics label{flex:1;position:relative;cursor:pointer}.tactics input{position:absolute;opacity:0}.tactics span{border:1px solid #bdc8b6;border-radius:5px;display:block;text-align:center;padding:10px 3px;font-size:12px;font-weight:700}.tactics small{display:block;font-weight:400;font-size:11px;margin-top:2px}.tactics input:checked+span{background:var(--lime);border-color:#7c9441}.tactics input:focus-visible+span{outline:3px solid #357aa4;outline-offset:2px}.shoot{width:100%}.feedback{font-size:14px;margin:13px 0}.feedback:empty{display:none}.feedback.success{color:#365f29}.feedback.mistake{color:#97421b}.hint-button{width:100%;display:flex;justify-content:space-between;padding:15px 0;background:transparent;border-bottom:1px solid var(--line);font-weight:700;color:var(--ink)}.help-note{font-size:11px;line-height:1.6;color:var(--muted);margin:16px 0 0}.coach-step{border-bottom:1px solid #dbe1cf;padding:14px 0}.coach-step h3{font-size:14px;margin:0 0 5px}.coach-step p{font-size:13px;margin:0}.coach-check{background:#e6eed8;padding:12px;font-size:13px;margin:12px 0}.goal-flash{position:absolute;inset:0;display:grid;place-items:center;font-size:76px;font-weight:950;color:var(--lime);background:#102c2988;z-index:3;animation:goal .7s ease-out}@keyframes goal{from{letter-spacing:.1em;filter:blur(6px)}to{letter-spacing:0;filter:blur(0)}}.result-sheet{max-width:740px;margin:20px auto 60px;text-align:center}.final-whistle{font-size:12px;letter-spacing:.12em}.result-sheet h1{font-size:64px;margin:22px 0}.result-sheet #finalScore{font-size:90px;font-weight:850;letter-spacing:-.04em}.result-actions{display:flex;justify-content:center;gap:15px;flex-wrap:wrap;margin-top:30px}#resultRoster{text-align:left}.error-banner,.connection{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);padding:16px 24px;border-radius:8px;max-width:90vw;width:max-content;z-index:20;box-shadow:0 10px 28px #122a2426}.error-banner{background:#872e22;color:white}.connection{background:var(--lime);color:var(--ink);bottom:88px}dialog{max-width:640px;width:92vw;background:var(--bg);color:var(--ink);border:0;border-radius:12px;padding:32px;box-shadow:0 20px 70px #001b2866;max-height:88vh}dialog::backdrop{background:#082b2bcc}dialog h2{font-size:30px;line-height:1.15}dialog h3{margin-top:24px}dialog li{margin-bottom:13px}dialog p,dialog li{font-size:15px}.dialog-close{float:right;margin:-12px -12px 12px 20px}::-webkit-scrollbar{width:10px}::-webkit-scrollbar-thumb{background:#91a38b;border:2px solid var(--bg);border-radius:10px}::-webkit-scrollbar-track{background:var(--bg)}@media(min-width:1500px){.arena-preview{min-height:630px}}@media(max-width:1000px){main{padding-top:32px}.home{gap:32px}.home h1{font-size:62px}.intro-meta{font-size:10px}.entry-buttons{flex-direction:column}.preview-top{padding:20px 16px;font-size:9px}.live-dot{display:none}.game-layout{gap:20px;grid-template-columns:minmax(0,1.1fr) minmax(300px,1fr)}.match-pitch{height:320px}.below-field{grid-template-columns:1fr}.task-panel{padding:20px}.lobby-layout{gap:28px}.room-ticket{padding:22px}}@media(max-width:720px){.topbar{height:75px}.brand{font-size:18px;gap:9px}.brandmark{width:30px;height:34px;font-size:28px}.topbar>.quiet{font-size:12px}main{padding:30px 5vw}.home{grid-template-columns:1fr;gap:30px}.home h1{font-size:64px}.intro>p{font-size:16px}.intro-meta{font-size:10px;margin:20px 0}.entry{max-width:none}.entry-buttons{flex-direction:row}.entry-buttons button{font-size:13px;padding:14px}.arena-preview{min-height:390px}.preview-pitch{min-height:240px;margin-top:12px}.calculation strong{font-size:25px}.how-strip{grid-template-columns:1fr;gap:15px}.how-strip p{margin:3px 0}.preview-top{font-size:10px}.live-dot{display:block}.section-heading h1{font-size:44px}.section-heading{gap:15px;margin-bottom:20px}.section-heading p{font-size:14px}.lobby-layout{grid-template-columns:1fr}.room-ticket strong{font-size:44px;margin:10px 0}.teams{gap:12px}.team-list h2{font-size:21px}.match-header{flex-wrap:wrap;justify-content:center;margin-bottom:20px}.match-header>span{order:3;width:100%;text-align:center}.scoreboard{gap:12px}.scoreboard strong{font-size:38px}.scoreboard>span{font-size:10px}.match-header>div:last-child{font-size:12px}.game-layout{display:flex;flex-direction:column}.match-pitch{height:230px;border-width:16px;outline-offset:-17px}.field-status{font-size:10px}.below-field{display:none}.task-panel{padding:22px}.equation{font-size:47px}.level-row{margin-top:12px}.level-progress{margin-bottom:15px}.result-sheet h1{font-size:48px}footer{flex-wrap:wrap;font-size:10px}footer>span:nth-child(2){display:none}dialog{padding:24px}.goal-flash{font-size:60px}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* A place-value grid keeps every written operation in its decimal column. */
.division-lesson{grid-column:1/-1;border-top:1px solid var(--line);padding-top:22px}
.division-lesson summary{cursor:pointer;font-size:20px;font-weight:750;padding:8px 0}
.lesson-layout{display:grid;grid-template-columns:1fr 1.05fr;gap:6vw;margin-top:28px}
.lesson-layout h2{font-size:30px;letter-spacing:-.02em;margin-bottom:14px}
.lesson-layout p{max-width:42ch;color:var(--muted)}
.lesson-layout label{display:block;font-size:13px;font-weight:700;margin:24px 0 8px}
.lesson-layout select{font:inherit;background:#fffef8;border:1px solid #a9b8a7;border-radius:6px;padding:12px;width:100%;color:var(--ink)}
.lesson-legend{font-size:13px;margin-top:20px}.lesson-legend span{background:#d8eefa;color:#174e70;padding:2px 4px}
.written-division{padding-top:18px;min-width:0}.written-division h3{font-size:18px;margin-bottom:8px}
.notation-tip{font-size:13px;color:var(--muted);margin-bottom:16px}
.division-paper{background:#fffef8;border:1px solid #bbc9b4;border-radius:8px;padding:20px 10px;overflow-x:auto;margin:14px 0 20px}
.division-header,.division-row{display:flex;align-items:center;min-height:36px;white-space:nowrap}
.division-header{margin-bottom:8px}.division-digits{display:flex;flex-shrink:0}
.division-cell,.division-sign{display:inline-flex;align-items:center;justify-content:center;width:1.05em;height:1.5em;font:600 25px/1.5 'Courier New',monospace;font-variant-numeric:tabular-nums;flex-shrink:0}
.division-sign{color:#98480e;width:.8em}
.division-divisor,.division-quotient{font:600 25px/1.5 'Courier New',monospace;white-space:pre}
.division-quotient{color:#365f29}.division-pending{color:#576762;font-size:16px}
.division-line{border-bottom:2px solid var(--ink)}
.division-source,.division-brought{background:#d8eefa;color:#174e70;border-radius:3px}
.division-row-note{font-size:11px;color:var(--muted);padding-left:12px;white-space:normal;line-height:1.3}
.division-current .division-row-note{font-weight:700;color:var(--ink)}
.division-explanation{min-height:118px}.division-explanation h4{font-size:16px;margin:0 0 8px}.division-explanation p{font-size:14px;line-height:1.65;margin-bottom:20px}
.division-controls{display:flex;align-items:center;justify-content:space-between;gap:8px}.division-controls button{font-size:12px;padding:12px}
.division-controls button:disabled{cursor:default;opacity:.4}.division-count{font-size:12px;white-space:nowrap;font-variant-numeric:tabular-nums}.division-all{font-size:12px;padding-left:0;margin-top:8px}
@media(max-width:720px){.lesson-layout{grid-template-columns:1fr;gap:14px}.division-cell,.division-sign,.division-divisor,.division-quotient{font-size:24px}.division-paper{padding:16px 8px}}

.entry select{width:100%;font:inherit;color:var(--ink,#102c29);background:#fff;border:1px solid #bac6bf;border-radius:8px;padding:13px 14px;margin-top:6px}.entry>label[for="divisionMode"]{display:block;margin-top:18px}.mode-help{font-size:13px!important;line-height:1.5!important;margin:8px 0 16px!important}.mode-badge{font-size:12px;font-weight:700;letter-spacing:.04em;color:#31574d;margin:12px 0}

.equation.hardcore-equation{font-size:clamp(24px,3vw,36px);white-space:nowrap;letter-spacing:-.04em}

.junior-groups{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:16px 0}.junior-group{border:1px solid var(--line);background:#fffef8;border-radius:8px;padding:10px}.junior-group b{font-size:13px}.junior-group>div{display:flex;flex-wrap:wrap;gap:4px;min-height:30px}.junior-ball{font-size:22px}.junior-status{font-weight:600}.junior-next{width:100%;font-size:14px}

.sweet-link{display:inline-block;background:#f7d7e5;color:#862452;padding:12px 16px;border-radius:10px;font-weight:750;text-decoration:none;margin-bottom:22px}.sweet-link:hover{background:#efbfd4}