:root{color-scheme:light;--bg:#f5f6f8;--paper:#fff;--ink:#172338;--muted:#627085;--line:#e2e6eb;--nav:#152234;--accent:#ef9c42;--pale:#fff3e2;--light:#e4e8ed;--dark:#7891ae;--good:#187855;--bad:#b53f39;--shadow:0 12px 35px #15223408;--content-max:1390px;--content-pad-inline:46px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,'Segoe UI',sans-serif;font-size:16px;line-height:1.6}body.dark,html.dark{color-scheme:dark;--bg:#101a29;--paper:#192638;--ink:#e5edf7;--muted:#b3c0d1;--line:#304157;--nav:#0c1523;--pale:#3b3023;--light:#bac8da;--dark:#526e90;--good:#77d8b0;--bad:#ffa6a0}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,.button{cursor:pointer;border-radius:8px;border:1px solid var(--line);padding:10px 16px;background:var(--paper);color:var(--ink);font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:8px;line-height:1.4}button:hover,.button:hover{filter:brightness(.97);border-color:var(--muted)}button:disabled{opacity:.45;cursor:default}.primary{background:var(--ink);color:var(--paper);border-color:var(--ink)}.accent{background:var(--accent);color:#192638;border-color:var(--accent)}.text-button{background:none;border:0;padding:6px;color:var(--muted)}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.shell{display:flex;min-height:100vh}.sidebar{width:240px;flex-shrink:0;background:var(--nav);color:#c8d2df;padding:33px 22px;display:flex;flex-direction:column;position:fixed;inset:0 auto 0 0;z-index:5}.brand{display:flex;align-items:center;font-size:33px;font-weight:750;letter-spacing:-1.6px;color:white;gap:8px;line-height:1}.brand>span:first-child{font-size:42px;color:var(--accent);margin-right:6px}.brand .brand-dot{color:var(--accent);margin-left:-10px}.eyebrow{font-size:12px;font-weight:750;letter-spacing:1.7px}.side-label{font-size:10px;color:#8292a9;margin:49px 8px 18px}.sidebar nav{display:grid;gap:7px}.sidebar nav a,.side-bottom>a,.side-bottom>button{display:flex;gap:14px;align-items:center;padding:12px 13px;font-size:16px;border-radius:7px}.sidebar nav a span{font-size:14px}.sidebar nav a.active{background:#293a50;color:white;border-left:3px solid var(--accent);padding-left:10px}.sidebar nav a:hover{background:#24354b}.sidebar nav b{font-size:12px;background:#3a4c63;border-radius:10px;padding:0 5px;margin-left:auto}.side-bottom{margin-top:auto;padding-top:50px}.side-bottom>button{background:none;border:0;color:inherit;font-weight:400;text-align:left;justify-content:flex-start}.side-bottom p{font-size:12px;border-top:1px solid #334153;padding:23px 12px 0;color:#9cadc1}.side-bottom>a.small{font-size:12px;color:#9cadc1}.workspace{margin-left:240px;width:calc(100% - 240px)}header{height:83px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 46px;background:var(--paper)}.crumb{font-size:11px;letter-spacing:1.3px;color:var(--muted)}.crumb span{margin:0 12px;color:#a7b2c1}.crumb b{color:var(--ink);font-weight:600}.header-right{display:flex;gap:20px;align-items:center}.avatar{width:33px;height:33px;display:grid;place-items:center;background:var(--pale);border-radius:50%;color:#9a5f21;font-size:13px;font-weight:700}.small{font-size:13px;color:var(--muted)}main{max-width:var(--content-max);margin:auto;padding:38px var(--content-pad-inline) 65px;min-height:80vh}h1,h2,h3,p{margin-top:0}h1{font-size:34px;line-height:1.25;letter-spacing:-1.2px;margin:10px 0}h2{font-size:23px;line-height:1.3;letter-spacing:-.6px;margin-bottom:16px}h3{font-size:19px;line-height:1.35;margin:13px 0}p{color:var(--muted);margin-bottom:18px}.page-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}.page-title p{margin:12px 0 0}.pill{padding:7px 12px;border:1px solid var(--line);border-radius:24px;font-size:12px;color:var(--muted);white-space:nowrap;background:var(--paper)}.continue-card{display:grid;grid-template-columns:1.1fr .9fr;gap:35px;padding:32px 38px;background:#e9edf4;border:1px solid #dce3ee;border-radius:13px;align-items:center;overflow:hidden}.dark .continue-card{background:#22334b;border-color:#304157}.continue-card .eyebrow{color:#526780}.dark .continue-card .eyebrow{color:#b8cee8}.continue-card h2{font-family:Georgia,serif;font-size:43px;font-weight:500;line-height:1.13;margin:18px 0;letter-spacing:-1.2px}.continue-card p{max-width:360px;font-size:15px;line-height:1.7}.continue-card .small{margin-top:12px}.continue-card #intro-board{max-width:295px;transform:rotate(-3deg);margin:auto;width:100%;box-shadow:16px 18px 0 #d9e1ed;border:9px solid #fff;border-radius:3px}.dark .continue-card #intro-board{border-color:#53677e;box-shadow:16px 18px 0 #152234}.section-heading{display:flex;justify-content:space-between;align-items:center;margin:34px 0 18px;gap:20px}.section-heading h2{margin:0}.module-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.module-card{padding:24px;background:var(--paper);border:1px solid var(--line);border-radius:11px;box-shadow:var(--shadow)}.module-card p{font-size:14px;line-height:1.7}.module-card a{font-size:14px;font-weight:650}.module-card .eyebrow{font-size:10px;color:var(--muted)}.module-card:hover{border-color:#9eafc4}.module-card.pending{box-shadow:none;opacity:.7}.module-number{font-family:Georgia,serif;font-size:32px;color:#8ea1ba}.progress-track{height:5px;border-radius:10px;background:var(--line);margin:20px 0 10px;overflow:hidden}.progress-track i{height:100%;display:block;background:var(--accent)}.toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.search{flex:1;min-width:170px;background:var(--paper);border:1px solid var(--line);border-radius:7px;color:var(--ink);padding:11px 15px}.session-strip{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:24px 0 0;font-size:14px}.session-strip>span{margin-right:auto;color:var(--muted)}.session-strip button{font-size:13px;padding:7px 13px}.board{display:grid;grid-template-columns:repeat(8,1fr);aspect-ratio:1;width:100%;border-radius:3px;overflow:hidden;touch-action:manipulation}.square{position:relative;aspect-ratio:1;padding:0;border:0;border-radius:0;background:var(--light);display:grid;place-items:center;line-height:1;min-width:0}.square.dark-square{background:var(--dark)}.square:hover{filter:none;border:0}.square.selected{box-shadow:inset 0 0 0 4px #f3b54c;background:#dac285}.square.last{background:#7eafd4}.square.last::before{content:'';position:absolute;left:10%;right:10%;bottom:7%;height:4px;border-radius:2px;background:#14324f;pointer-events:none}.square:focus-visible{outline:3px solid #102033;outline-offset:-5px;z-index:1}body.dark .square.last{background:#24577f}body.dark .square.last::before{background:#e7f3ff}body.dark .square:focus-visible{outline-color:#f4f7fb}.square.target:after{content:'';position:absolute;width:24%;height:24%;border-radius:50%;background:#183b5270;pointer-events:none}.square.target:has(.piece):after{width:85%;height:85%;border:5px solid #183b5270;background:transparent}.piece{font-family:'Segoe UI Symbol','Arial Unicode MS',serif;font-size:clamp(23px,4.7vw,58px);font-weight:400;user-select:none;line-height:1;z-index:1;pointer-events:none;color:#182536;text-shadow:0 2px 1px #0002}.piece.white{color:#fff; -webkit-text-stroke:1.1px #263a50;text-shadow:0 2px 1px #0003}.coord{font-size:10px;position:absolute;left:3px;bottom:3px;color:#284461;line-height:1;pointer-events:none}.rank{top:3px;bottom:auto;left:3px}.dark-square .coord{color:#f4f7fc}#intro-board .piece{font-size:32px}#intro-board .coord{font-size:8px}.reader-layout{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);gap:34px;align-items:start}.prose{font-size:16px;line-height:1.85}.prose p{color:var(--ink)}.prose h2{margin-top:32px}.callout{padding:19px 22px;background:var(--pale);border-left:3px solid var(--accent);border-radius:0 7px 7px 0;margin:24px 0}.callout p{margin:0;font-size:14px;color:var(--ink)}.board-panel{position:sticky;top:22px;background:var(--paper);padding:20px;border:1px solid var(--line);border-radius:12px}.board-panel h3{margin-top:0}.board-panel .board{margin:13px 0}.board-meta{display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}.board-controls{display:flex;justify-content:center;gap:8px;margin:15px 0}.board-controls button{padding:8px 14px}.caption{font-size:14px;min-height:67px;line-height:1.6}.tabs{display:flex;gap:7px;margin:20px 0;flex-wrap:wrap}.tabs button{font-size:14px;padding:9px 13px}.tabs .active{background:var(--ink);color:var(--paper)}.lesson-list{background:var(--paper);border:1px solid var(--line);border-radius:12px;overflow:hidden}.lesson-row{display:flex;align-items:center;gap:18px;padding:21px 24px;border-bottom:1px solid var(--line)}.lesson-row:last-child{border:0}.lesson-row:hover{background:var(--bg)}.lesson-row h3{font-size:16px;margin:0}.lesson-row p{font-size:13px;margin:3px 0 0}.lesson-row .num{font-size:13px;color:var(--muted);min-width:25px}.lesson-row .row-end{margin-left:auto}.exercise{background:var(--paper);padding:24px;border:1px solid var(--line);border-radius:10px;margin:15px 0}.exercise h3{margin-top:0}.options{display:grid;gap:9px;margin:18px 0}.option{font-size:15px;justify-content:flex-start;text-align:left;font-weight:400}.option.correct{background:#ddf3e9;color:#17563f;border-color:#65a98d}.option.incorrect{background:#fde8e4;color:#893930;border-color:#d29285}.feedback{padding:12px 15px;border-radius:6px;background:var(--bg);font-size:14px;margin:14px 0;color:var(--ink)}.feedback.good{border-left:3px solid var(--good)}.feedback.bad{border-left:3px solid var(--bad)}.badge{font-size:11px;letter-spacing:.5px;color:var(--muted);text-transform:uppercase}.tag{display:inline-block;padding:4px 9px;background:var(--bg);border-radius:4px;font-size:12px;color:var(--muted)}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:26px 0}.stat{padding:24px;border-radius:10px;background:var(--paper);border:1px solid var(--line)}.stat strong{display:block;font-size:32px;font-weight:600}.stat span{font-size:13px;color:var(--muted)}.link{color:var(--ink);text-decoration:underline;text-underline-offset:3px}.empty{padding:45px;text-align:center;background:var(--paper);border:1px dashed var(--line);border-radius:10px}.empty h2{margin-top:12px}.glossary{display:grid;grid-template-columns:1fr 1fr;gap:18px}.glossary article{padding:22px;background:var(--paper);border:1px solid var(--line);border-radius:8px}.glossary h3{margin:0 0 10px}.glossary p{font-size:14px;margin:0}footer{border-top:1px solid var(--line);padding:23px 46px;color:var(--muted);font-size:12px;display:flex;justify-content:space-between}.skip{position:fixed;top:-80px;z-index:20;background:var(--paper);padding:12px}.skip:focus{top:0}#toast{position:fixed;bottom:24px;right:24px;background:var(--ink);color:var(--paper);padding:13px 20px;border-radius:9px;z-index:20;max-width:360px;box-shadow:var(--shadow)}#toast:empty{display:none}.move-list{display:flex;gap:5px;flex-wrap:wrap;margin:15px 0}.move-list button{padding:4px 7px;font-size:12px;border:0}.move-list button.active{background:var(--pale)}details{margin:18px 0;border:1px solid var(--line);border-radius:8px;padding:15px 18px}summary{cursor:pointer;font-weight:600}details p{font-size:14px;margin-top:13px}ul{padding-left:20px}li{margin:8px 0}.muted{color:var(--muted)}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.inline-progress{color:var(--good);font-size:12px}.back-link{font-size:13px;color:var(--muted);display:inline-block;margin-bottom:23px}.progress-note{font-size:13px;padding:13px 18px;background:var(--paper);border:1px solid var(--line);border-radius:8px;margin-top:22px}.exercise-board{max-width:440px;margin:18px auto}.exercise-board .piece{font-size:clamp(26px,5vw,49px)}
@media(min-width:1500px){#intro-board{max-width:330px!important}#intro-board .piece{font-size:37px}}@media(max-width:1150px){.sidebar{width:210px;padding:28px 15px}.workspace{margin-left:210px;width:calc(100% - 210px)}body{--content-pad-inline:30px}main{padding:30px}header{padding:0 30px}.continue-card{padding:28px;gap:25px}.continue-card h2{font-size:36px}.module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.header-right .small{display:none}.reader-layout{grid-template-columns:1fr}.board-panel{position:static;max-width:550px;width:100%;margin:auto}.board-panel .piece{font-size:52px}.reader-layout .prose{order:1}.reader-layout .board-panel{order:0}}@media(max-width:760px){.shell{display:block}.sidebar{position:relative;width:100%;padding:17px 20px}.brand{font-size:27px}.brand>span:first-child{font-size:33px}.sidebar nav{display:flex;overflow-x:auto;gap:5px;margin-top:18px}.sidebar nav a{white-space:nowrap;padding:10px}.sidebar nav a.active{border-left:0;border-bottom:2px solid var(--accent);padding:10px}.sidebar nav a span{font-size:12px}.sidebar nav b{display:none}.side-label{display:none}.side-bottom{position:absolute;top:14px;right:18px;padding:0;display:flex;gap:9px}.side-bottom>a{display:none}.side-bottom>button{padding:5px}.side-bottom>button span{display:none}.side-bottom p{display:none}.workspace{margin:0;width:100%}header{height:48px;padding:0 20px}.avatar{display:none}body{--content-pad-inline:20px}main{padding:26px 20px 40px}h1{font-size:27px}.page-title{gap:10px;align-items:start}.page-title>.pill{display:none}.page-title p{font-size:14px}.continue-card{grid-template-columns:1fr .8fr;padding:24px 20px;gap:15px}.continue-card h2{font-size:29px}.continue-card .eyebrow{font-size:9px;letter-spacing:1px}.continue-card p{font-size:13px}.continue-card .button{font-size:12px;padding:10px 12px}.continue-card .small{font-size:11px}#intro-board .piece{font-size:24px}#intro-board .coord{font-size:6px}.continue-card #intro-board{border:5px solid white;box-shadow:6px 9px 0 #d9e1ed}.module-grid{grid-template-columns:1fr}.module-card{padding:22px}.section-heading{align-items:start}.section-heading h2{font-size:20px}.section-heading .small{font-size:11px;text-align:right}.reader-layout{gap:20px}.board-panel{padding:13px}.board-panel .piece{font-size:clamp(30px,9vw,52px)}.exercise{padding:18px}.stats{gap:10px}.stat{padding:16px 10px}.stat strong{font-size:27px}.stat span{font-size:11px}.glossary{grid-template-columns:1fr}footer{padding:20px;font-size:10px}.eyebrow{font-size:10px}.lesson-row{padding:17px;gap:11px}.lesson-row .row-end{font-size:10px}.prose{font-size:16px}.toolbar>button{font-size:13px}.exercise-board .piece{font-size:clamp(25px,8vw,49px)}}@media(prefers-reduced-motion:no-preference){button,a{transition:background .15s,border-color .15s}main{animation:arrive .25s ease}@keyframes arrive{from{opacity:.6;transform:translateY(4px)}to{opacity:1;transform:none}}}
.board{container-type:inline-size}.board .piece,#intro-board .piece{font-size:10cqw}
.v8-home-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:24px 0}.v8-home-cards a{display:block}.v8-home-cards h2{margin:8px 0}.v8-path{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:10px}.v8-node{display:flex;align-items:center;gap:12px;padding:15px;background:var(--paper);border:1px solid var(--line);border-radius:10px}.v8-node-index{font-family:Georgia,serif;font-size:24px;color:var(--accent)}.v8-node span:nth-child(2){display:grid;gap:2px;min-width:0}.v8-node small{font-size:12px;color:var(--muted)}.v8-node em{margin-left:auto;font-style:normal}.v8-node.locked{opacity:.55}.v8-node.completed{border-color:var(--good)}.v8-stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.v8-module-bars{display:grid;gap:10px}.v8-module-bars>div{display:grid;grid-template-columns:minmax(160px,1fr) 2fr 45px;gap:12px;align-items:center;font-size:13px}.v8-module-bars progress{width:100%;accent-color:var(--accent)}.v8-module-bars small{color:var(--muted)}.v8-daily-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.daily-card h2{font-size:19px;margin:7px 0}.daily-card .exercise-board{max-width:260px}.daily-done{border-color:var(--good)}
@media(max-width:760px){.v8-home-cards,.v8-stat-grid,.v8-daily-grid{grid-template-columns:1fr}.v8-module-bars>div{grid-template-columns:1fr 1.5fr 35px}}
.toolbar label,.game-fields label{display:flex;flex-direction:column;align-items:flex-start;gap:6px}.tabs{position:sticky;top:0;z-index:3;background:var(--bg);padding-top:8px}.lesson-next-bar{position:static;z-index:1;display:flex;gap:12px;align-items:center;justify-content:space-between;background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin:16px 0 0}.exercise-nav{margin-top:12px;justify-content:space-between}.exercise-nav button{min-height:44px}.learning-world>summary{display:flex;gap:12px;align-items:center}.home86-primary{border-color:var(--accent)}@media(max-width:800px){.toolbar button,.toolbar .button,.sidebar a,.lesson-next-bar a{min-height:44px}}
.v8-path{grid-template-columns:1fr 1fr;max-width:1000px}.v8-node{min-height:95px;position:relative}.v8-node.locked{opacity:1;background:var(--bg);border-style:dashed;color:var(--muted)}.v8-node.completed .v8-node-index{color:var(--good)}.v8-node.available,.v8-node.in-progress{border-color:var(--accent)}.v8-node.in-progress{background:var(--pale)}.v8-chapter{margin-bottom:28px}.course-progress{width:100%;height:12px;accent-color:var(--accent)}.flame-knight{display:grid;place-items:center;position:relative;width:60px;height:64px;color:var(--accent)}.flame-knight svg{position:absolute;inset:0;width:60px;height:64px}.flame-knight>span{font-size:43px;position:relative;color:var(--ink);line-height:1;margin-top:13px}.streak-card{display:flex;align-items:center;gap:10px;padding:10px 15px;border:1px solid var(--line);border-radius:12px;background:var(--paper)}.streak-card strong{display:block;font-size:30px;line-height:1.2}.streak-card small{color:var(--muted)}.activity-summary{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}.activity-summary span{padding:8px 12px;background:var(--paper);border:1px solid var(--line);border-radius:8px;font-size:13px}.daily-progress{display:flex;align-items:center;gap:15px;flex-wrap:wrap;margin-bottom:20px}.daily-progress progress{flex:1;accent-color:var(--accent);min-width:140px}.daily-progress small{color:var(--muted)}.daily-card .exercise-board{max-width:380px}.v8-levels{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px}.capture-bars{display:grid;gap:16px;background:var(--paper);padding:24px;border:1px solid var(--line);border-radius:12px}.capture-bars>div{display:grid;grid-template-columns:40px 140px 1fr 60px 85px;gap:10px;align-items:center}.capture-bars small{display:block;color:var(--muted);font-size:12px}.capture-bars progress{width:100%;accent-color:var(--accent)}.capture-piece{font-size:34px;line-height:1}.username-dialog{max-width:820px;color:var(--ink)}.username-dialog .auth-layout{margin:0;gap:24px}.username-dialog .auth-card{padding:20px}.username-dialog .auth-intro h1{font-size:30px}.username-dialog .auth-knight{font-size:80px}
@media(max-width:760px){.v8-path{grid-template-columns:1fr}.capture-bars{padding:15px}.capture-bars>div{grid-template-columns:28px 85px 1fr 40px;gap:6px}.capture-bars>div>small{grid-column:3/5}.streak-card{padding:6px 8px;gap:5px}.streak-card small{font-size:11px}.streak-card .flame-knight{width:38px;height:48px}.streak-card svg{width:38px;height:48px}.streak-card .flame-knight>span{font-size:28px}.streak-card strong{font-size:24px}.username-dialog{padding:20px}}
@media(prefers-reduced-motion:no-preference){.lesson-completed{animation:complete-pulse .5s ease}.daily-done{animation:complete-pulse .5s ease}@keyframes complete-pulse{50%{box-shadow:0 0 0 5px var(--pale);transform:translateY(-2px)}}}
.streak-card{flex-shrink:0}.flame-knight{flex-shrink:0}.streak-card small{white-space:nowrap}#v8-dashboard h1{overflow-wrap:anywhere}
#onboarding-root{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:16px;background:rgba(12,21,35,.72)}
.onboarding-card{position:relative;z-index:81;width:min(440px,100%);max-height:min(560px,calc(100dvh - 32px));overflow:auto;background:var(--paper);color:var(--ink);border:1px solid var(--line);border-radius:14px;padding:22px 20px 16px;box-shadow:0 18px 50px #15223433}
.onboarding-card h2{margin-bottom:8px}
.onboarding-card p{margin-bottom:12px}
.onboarding-card .onboarding-actions{justify-content:space-between;align-items:center}
.onboarding-nav{display:flex;gap:8px;flex-wrap:wrap;margin-left:auto}
.onboarding-close{position:absolute;top:8px;right:8px;border:0;background:transparent;min-width:44px;min-height:44px;font-size:24px;line-height:1}
.onboarding-card button{min-height:44px;min-width:44px}
.feedback:empty{display:none;padding:0;margin:0;background:transparent}

/* Jugada 8.7: four task-oriented home cards. */
.home86-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.home86-card{min-width:0}.home86-card h2{margin:10px 0}.home86-card progress{width:100%}.home86-pending{border-top:1px solid var(--line);padding:12px 0}.home86-card input{max-width:100%;width:100%;box-sizing:border-box}.home86-card form{margin:16px 0}.home86-card .toolbar{flex-wrap:wrap}.home86-card p{overflow-wrap:anywhere}.retry86-board{max-width:420px}.educational86{border-top:1px solid var(--line);margin-top:14px;padding-top:10px}@media(max-width:760px){.home86-grid{grid-template-columns:1fr;gap:14px}.home86-card .button{white-space:normal}}

/* Jugada 8.7: compact, grouped and keyboard-accessible navigation. */
.sidebar{overflow-y:auto;padding:18px 14px 12px}
.sidebar .brand{font-size:26px;gap:6px}
.sidebar .brand>span:first-child{font-size:28px;margin-right:4px}
.sidebar .side-label{margin:12px 8px 8px;letter-spacing:.12em}
.sidebar nav{display:flex;flex-direction:column;gap:2px;flex:0 1 auto;min-height:0}
.sidebar nav>a,.nav-group{width:100%}
.sidebar nav>a,.side-bottom>a,.side-bottom>button{gap:8px;padding:7px 10px;font-size:14px;align-items:center}
.sidebar nav>a span,.sidebar nav .nav-group-links a span{font-size:13.5px;line-height:1.25;overflow-wrap:anywhere;min-width:0}
.sidebar nav>a,.sidebar nav .nav-group-links a{min-width:0}
.nav-group{margin:0;border:0;padding:0;background:transparent;border-radius:8px}
.nav-group summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:8px;width:100%;min-height:40px;padding:7px 10px;border-radius:7px;color:#e8eef6;font-size:13.5px;font-weight:750;letter-spacing:.2px}
.nav-group summary::-webkit-details-marker{display:none}
.nav-group summary::after{content:'›';flex:0 0 auto;margin-left:auto;font-size:18px;line-height:1;transform:rotate(0deg);transition:transform .15s ease;color:#9cadc1}
.nav-group[open] summary::after{transform:rotate(90deg)}
.nav-group summary:hover,.nav-group summary:focus-visible{background:#24354b}
.nav-group summary:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.nav-group-links{display:grid;gap:1px;padding:1px 0 4px 8px}
.sidebar nav .nav-group-links a{padding:7px 10px;font-size:13.5px}
.sidebar nav>a.nav-home,.sidebar nav>a.nav-main-link{padding:7px 10px}
.sidebar nav a.active{background:#293a50;color:#fff;border-left:3px solid var(--accent);padding-left:7px}
.sidebar .side-bottom{margin-top:auto;padding-top:12px;border-top:1px solid #334153;display:flex;flex-wrap:wrap;align-items:center;gap:8px}

@media(max-width:760px){
 .sidebar{position:relative;width:100%;padding:15px 18px;overflow:visible}
 .sidebar nav{display:none;overflow:visible;margin-top:14px;gap:7px}
 .sidebar.navigation-open nav{display:grid}
 .sidebar nav>a,.sidebar nav .nav-group-links a{white-space:normal}
 .sidebar nav a.active{border-bottom:0;border-left:3px solid var(--accent);padding-left:10px}
 .nav-group summary{padding:10px 12px}
 .nav-group-links{padding-left:8px}
 .side-bottom{position:absolute;top:13px;right:18px;padding:0;margin:0;display:flex;gap:8px}
 #navigation-toggle{display:flex;margin-top:13px;width:100%;justify-content:flex-start;background:#1c2b3e;color:#fff;border-color:#334153}
}
@media(min-width:761px){#navigation-toggle{display:none}}

/* Jugada 8.7 · Original, responsive lesson journey. No borrowed brand assets. */
.learning-header{align-items:center;gap:16px}.learning-index{margin:16px 0 28px;border:1px solid var(--line);border-radius:12px;background:var(--paper);padding:10px 16px}
.learning-index>summary{font-weight:700;cursor:pointer;min-height:42px;display:flex;align-items:center}.learning-index nav{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:5px;margin:9px 0 5px}.learning-index nav a{padding:9px 10px;border-radius:7px;text-decoration:none}.learning-index nav a:hover,.learning-index nav a:focus-visible{background:var(--pale);outline:2px solid var(--accent)}
.learning-worlds{max-width:900px;margin:0 auto}.learning-world{padding:24px 16px 18px;margin-bottom:24px;background:var(--paper);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);scroll-margin-top:24px}
.learning-world-heading{display:flex;align-items:center;gap:13px;flex-wrap:wrap;padding:0 10px 15px;border-bottom:1px solid var(--line)}.learning-world-heading>div{flex:1;min-width:180px}.learning-world-heading h2{margin:1px 0 0;font-size:clamp(20px,3.3vw,27px);line-height:1.3}.learning-world-heading p{color:var(--muted);font-size:14px;margin:5px 0}.learning-world-number{display:grid;place-items:center;border:2px solid var(--accent);width:49px;height:49px;border-radius:15px;font-weight:800;font-size:20px;background:var(--pale)}.learning-world-progress{border:1px solid var(--line);border-radius:999px;padding:5px 10px;font-weight:700;font-size:12px;white-space:nowrap}.learning-world-complete{color:var(--good);font-weight:700;text-align:center}
.learning-path.v8-path{display:block;position:relative;margin:20px auto 0;max-width:660px;padding:0;isolation:isolate}.learning-trail{position:absolute;inset:0;display:block;width:100%;height:100%;z-index:-1;pointer-events:none;overflow:visible}.learning-trail path{fill:none;stroke:var(--accent);stroke-width:2.5;stroke-dasharray:5 8;stroke-linecap:round;opacity:.75}
.learning-step{height:148px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));justify-items:center;align-items:start}.learning-spot{display:flex;position:relative;flex-direction:column;align-items:center;gap:3px;width:min(100%,154px);padding:13px 1px 2px;text-decoration:none;min-width:0;text-align:center;border-radius:13px;color:var(--ink)}.learning-step.lane-left .learning-spot{grid-column:1}.learning-step.lane-center .learning-spot{grid-column:2}.learning-step.lane-right .learning-spot{grid-column:3}
.learning-bubble{width:78px;height:78px;display:grid;place-items:center;position:relative;border:3px solid #9eacbc;border-radius:50%;background:var(--light);box-shadow:0 5px 0 #182b3e30,0 9px 15px #17233820;transition:transform .2s ease,box-shadow .2s ease}.learning-bubble img{width:52px;height:52px;object-fit:contain;filter:drop-shadow(0 2px 1px #0002)}.learning-number{position:absolute;right:-9px;bottom:-5px;display:grid;place-items:center;min-width:28px;height:28px;padding:1px 4px;border:2px solid var(--paper);border-radius:999px;background:#263a50;color:#fff;font-size:12px;font-weight:800;line-height:1}
.learning-node-title{font-weight:750;line-height:1.15;font-size:13px;max-width:100%;overflow-wrap:anywhere;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden}.learning-node-status{font-size:11px;color:var(--muted);line-height:1.15}.learning-current-hint{position:absolute;top:-7px;left:50%;transform:translateX(-50%);background:var(--nav);color:white;border-radius:99px;white-space:nowrap;font-weight:700;font-size:11px;padding:2px 10px}
.learning-spot.is-completed .learning-bubble{border-color:var(--good);background:#d6f5e7}.learning-spot.is-completed .learning-number{background:var(--good)}.learning-spot.is-available .learning-bubble,.learning-spot.is-in-progress .learning-bubble{border-color:#b36d18;background:#fff1d4;box-shadow:0 5px 0 #714315,0 0 0 5px #eda74734}.learning-spot.is-in-progress .learning-bubble{outline:2px dashed #c27e20;outline-offset:6px}.learning-spot.is-locked{color:var(--muted)}.learning-spot.is-locked .learning-bubble{border-style:dashed;box-shadow:none;background:var(--bg);opacity:.65}.learning-spot.is-locked .learning-bubble img{opacity:.55;filter:grayscale(1)}.learning-spot.is-locked .learning-number{background:var(--muted)}.learning-spot[href]:hover .learning-bubble,.learning-spot[href]:focus-visible .learning-bubble{transform:translateY(-4px);box-shadow:0 9px 0 #17233824,0 14px 18px #17233824}.learning-spot[href]:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.learning-next{position:sticky;bottom:10px;z-index:6;max-width:680px;margin:20px auto 25px;display:flex;align-items:center;justify-content:space-between;gap:15px;border:1px solid var(--line);background:var(--paper);border-radius:14px;padding:12px 16px;box-shadow:0 6px 22px #17233822}.learning-next>div{display:grid;gap:1px;min-width:0}.learning-next strong{font-size:12px;color:var(--muted)}.learning-next span{font-size:14px;line-height:1.3;overflow-wrap:anywhere}.learning-next .button{flex-shrink:0}
@media(max-width:760px){.learning-world{padding:17px 7px;margin-bottom:18px;border-radius:14px}.learning-world-heading{gap:8px;padding:0 9px 12px}.learning-world-heading>div{min-width:140px}.learning-world-number{width:40px;height:40px;font-size:16px}.learning-world-progress{margin-left:auto}.learning-path.v8-path{max-width:100%}.learning-step{height:148px}.learning-spot{width:min(100%,108px);padding-top:13px}.learning-bubble{width:68px;height:68px}.learning-bubble img{width:48px;height:48px}.learning-node-title{font-size:12px}.learning-node-status{font-size:10px}.learning-next{bottom:calc(8px + env(safe-area-inset-bottom));margin:12px 4px 20px;padding:10px 12px}.learning-next .button{padding:9px 12px;font-size:13px}}
@media(prefers-reduced-motion:reduce){.learning-bubble{transition:none}}

.learning-index nav button{font:inherit;text-align:left;padding:9px 10px;border:0;background:transparent;color:var(--ink);border-radius:7px;cursor:pointer}.learning-index nav button:hover,.learning-index nav button:focus-visible{background:var(--pale);outline:2px solid var(--accent)}
.learning-trail{z-index:0}.learning-step{position:relative;z-index:1}

/* Navigation 8.7.2: compact primary menu with distinct non-emoji SVG icons. */
.nav-icon{width:18px;height:18px;flex:0 0 18px;display:block;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.sidebar nav>a.nav-main-link{padding:7px 10px}
.course-summary{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:18px;margin-bottom:24px}
.course-summary-main{min-width:0}.course-summary-main h2{margin-bottom:6px}.course-summary-main p{margin-bottom:12px}.course-summary-percent{font-size:30px;line-height:1}.course-summary .button{white-space:nowrap}
.profile-plan-section{margin-top:34px;padding-top:8px;border-top:1px solid var(--line)}
.profile-plan-section>.section-heading{margin-top:18px}
@media(max-width:760px){body{overflow-x:hidden}.sidebar nav{min-width:0}.sidebar nav>a,.sidebar nav .nav-group-links a{min-width:0}.nav-icon{width:18px;height:18px;flex-basis:18px}.course-summary{grid-template-columns:1fr;align-items:start}.course-summary .button{width:100%}.profile-plan-section{margin-top:28px}}
.stats-two{grid-template-columns:repeat(2,1fr)}
.compare-panel{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:0 0 18px}
.compare-panel h3{margin:0 0 8px}
.compare-panel>div{min-width:0}
.compare-panel #played-board,.compare-panel #alternative-board{width:100%;max-width:100%;margin:0}
#compare-host:empty{display:none}
#compare-host:not(:empty){grid-column:1 / -1}
#education-summary:empty,#analysis-summary:empty{display:none}
.game-board-wrap .board-help[hidden],.game-board-wrap .board-status[hidden]{display:none!important}
@media(max-width:1050px){
 .game-layout{display:flex;flex-direction:column;align-items:stretch;gap:16px;margin-top:12px}
 .game-layout > .game-board-wrap{order:1}
 .game-layout > section{order:2}
 .game-layout > #compare-host{order:3}
 .game-moves{max-height:none;min-height:0;margin:8px 0 0}
}
.alt-card{display:grid;gap:8px;margin:12px 0;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--bg)}
.alt-card h3{margin:0}
.alt-kind{margin:0;color:var(--muted);font-weight:700}
.alt-variation{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.alt-variation span{padding:4px 8px;border-radius:6px;background:var(--pale);font-weight:700}
.review-result{margin-top:0;font-size:22px;font-weight:750}
.review-result.good{color:var(--good)}
.review-result.bad{color:var(--bad)}
.daily-step{max-width:560px}
.daily-step .exercise-board{max-width:420px;margin:8px 0}
.daily-finished h2{color:var(--good)}
.daily-progress{display:grid;gap:8px;max-width:560px;margin-bottom:16px}
.daily-progress progress{width:100%;height:14px;accent-color:var(--accent)}
@media(max-width:800px){.compare-panel{grid-template-columns:1fr}}
.review-lead .eyebrow{margin:14px 0 2px;letter-spacing:.04em}
.review-lead .eyebrow:first-child{margin-top:0}
.review-lead h2{margin:0 0 4px}
.review-lead p{margin:0}
.educational86 summary{cursor:pointer;font-weight:700;margin-top:12px}
body.dark .learning-spot.is-completed .learning-bubble,html.dark .learning-spot.is-completed .learning-bubble{background:#1c4636;border-color:var(--good)}
body.dark .learning-spot.is-available .learning-bubble,body.dark .learning-spot.is-in-progress .learning-bubble,html.dark .learning-spot.is-available .learning-bubble,html.dark .learning-spot.is-in-progress .learning-bubble{background:var(--pale);border-color:var(--accent);box-shadow:0 5px 0 #714315,0 0 0 5px #eda74722}