@import "https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap";:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--jet:#2d3142;--slate:#4f5d75;--silver:#bfc0c0;--white:#fff;--coral:#ef8354;--bg:var(--jet);--surface:color-mix(in srgb, var(--slate) 25%, var(--jet));--surface-raised:var(--slate);--ink:var(--white);--ink-2:#ffffffde;--muted:var(--silver);--line:#bfc0c033;--line-strong:#bfc0c066;--accent:var(--coral);--board-light:var(--silver);--board-dark:var(--slate);--last-move:#ef835455;--selected:#ef835499;--good:var(--white);--fine:var(--silver);--warn:var(--silver);--bad:var(--coral);--worst:var(--coral);--radius:12px;--sans:"Space Grotesk", system-ui, sans-serif;--serif:var(--sans);--mono:"IBM Plex Mono", monospace;font-family:var(--sans);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;font-size:16px;line-height:1.55}*{box-sizing:border-box}body{background:radial-gradient(ellipse at 12% 0, #4f5d7550, transparent 42%), radial-gradient(ellipse at 95% 25%, #4f5d7540, transparent 45%), var(--bg);min-width:320px;min-height:100vh;margin:0}body:before{content:"";z-index:-1;pointer-events:none;background-image:linear-gradient(#ef835408 1px,#0000 1px),linear-gradient(90deg,#ef835408 1px,#0000 1px);background-size:48px 48px;position:fixed;inset:0}button,input,select{font:inherit;color:inherit}button{cursor:pointer;touch-action:manipulation}button:disabled{cursor:default;opacity:.45}a{color:var(--accent);text-underline-offset:4px}:focus-visible{outline:2px solid var(--accent);outline-offset:4px}h1,h2,h3,p{overflow-wrap:anywhere}h1,h2,h3{font-weight:600}.landing-shell,.game-shell{flex-direction:column;min-height:100vh;display:flex}.screen{flex:1;animation:.3s ease-out fade-in}.site-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;width:min(1680px,100%);margin:0 auto;padding:23px 40px;display:flex}.wordmark{letter-spacing:-.8px;align-items:center;gap:10px;font-size:22px;font-weight:600;display:flex}.wordmark>span:first-child{width:44px;height:44px;color:var(--accent);background:#ef835412;border:1px solid #ef835450;border-radius:11px;place-items:center;font-size:29px;display:grid}.brand-ai{color:var(--accent);font:14px var(--mono);letter-spacing:1px;border:1px solid #ef835440;border-radius:5px;padding:3px 6px}.header-nav{align-items:center;gap:22px;font-size:16px;display:flex}.account-name,.offline-note{color:var(--muted)}.site-footer{text-align:center;color:var(--muted);margin-top:auto;padding:25px;font-size:15px}.site-footer a{color:var(--ink-2)}.app-loading{text-align:center;color:var(--accent);padding:20vh 0}.text-button{color:var(--accent);font-size:inherit;text-align:left;background:0 0;border:0;padding:4px 0}.text-button:hover:not(:disabled){color:#fff;text-underline-offset:4px;text-decoration:underline}.eyebrow{font:13px var(--mono);letter-spacing:1.6px;color:var(--accent);margin:0 0 12px}.signal-dot{background:var(--accent);border-radius:50%;width:7px;height:7px;margin-right:8px;display:inline-block;box-shadow:0 0 14px #ef835480}.split-layout{grid-template-columns:minmax(0,1fr) 420px;align-items:start;gap:90px;width:min(1280px,100%);margin:0 auto;padding:72px 40px;display:grid}.intro h1{letter-spacing:-3px;margin:24px 0;font-size:clamp(40px,4.7vw,68px);line-height:1.05}.intro h1 em{color:var(--accent);font-style:normal}.lede{max-width:500px;color:var(--ink-2);font-size:16px;line-height:1.8}.feature-chips{flex-wrap:wrap;gap:9px;margin:24px 0;display:flex}.feature-chips span{border:1px solid var(--line);color:var(--ink-2);background:#4f5d7588;border-radius:6px;padding:7px 10px;font-size:14px}.featured-position{border:1px solid var(--line);background:linear-gradient(125deg,#4f5d7588,#2d314288);border-radius:14px;grid-template-columns:190px 1fr;align-items:center;gap:22px;max-width:520px;margin:40px 0 0;padding:18px;display:grid}.diagram{aspect-ratio:1;border:1px solid #bfc0c0;border-radius:5px;grid-template-columns:repeat(8,1fr);display:grid;overflow:hidden;box-shadow:0 14px 30px #2d314244}.diagram span{aspect-ratio:1;place-items:center;display:grid}.diagram .light{background:var(--board-light)}.diagram .dark{background:var(--board-dark)}.diagram i{font-size:20px;font-style:normal;line-height:1}.featured-position figcaption{color:var(--muted);font-size:15px;line-height:1.8}.featured-position figcaption strong{color:var(--ink);margin-bottom:8px;display:block}.card{background:linear-gradient(150deg,#4f5d75ee,#2d3142ee);border:1px solid #4f5d75;border-radius:20px;padding:30px;position:relative;box-shadow:0 30px 80px #2d314244,inset 0 1px #ffffff0d}.card:before{content:"";background:var(--accent);width:90px;height:2px;position:absolute;top:-1px;left:30px;box-shadow:0 0 20px #ef835466}.card h2{letter-spacing:-.8px;margin:0 0 24px;font-size:25px}.field-label{color:var(--ink-2);margin:18px 0 7px;font-size:15px;display:block}.text-input{border:1px solid var(--line-strong);background:#2d3142;border-radius:9px;width:100%;min-width:0;height:46px;padding:0 13px;transition:border-color .2s}.text-input:focus{border-color:var(--accent);outline:2px solid #ef835422}.hint{color:var(--muted);margin:10px 0 0;font-size:15px;line-height:1.6}.hint.warning{color:var(--warn)}.error-message{color:var(--worst);font-size:16px}.switch-mode{color:var(--muted);text-align:center;margin:20px 0 0;font-size:16px}.primary-button,.secondary-button{border-radius:9px;justify-content:center;align-items:center;gap:10px;width:100%;min-height:42px;padding:10px 15px;font-size:16px;font-weight:600;transition:background .2s,border-color .2s,box-shadow .2s;display:inline-flex}.primary-button{border:1px solid var(--accent);background:var(--accent);color:#2d3142;margin-top:22px;box-shadow:0 4px 24px #ef835419}.primary-button:hover:not(:disabled){background:#fff;box-shadow:0 4px 28px #ef835440}.secondary-button{border:1px solid var(--line-strong);color:var(--ink-2);background:#2d3142}.secondary-button:hover:not(:disabled){border-color:var(--accent);color:var(--accent);background:#4f5d75}.secondary-button.danger{color:var(--worst)}.mode-picker{border:1px solid var(--line);background:#2d3142;border-radius:10px;grid-template-columns:repeat(3,1fr);gap:4px;padding:4px;display:grid}.mode-picker button{height:36px;color:var(--muted);background:0 0;border:0;border-radius:7px;font-size:15px}.mode-picker button.active{color:var(--accent);background:#ef83541a;box-shadow:inset 0 0 0 1px #ef835428}.agent-config{border-top:1px solid var(--line);margin-top:14px;padding-top:14px}.agent-selector{grid-template-columns:1fr 1.2fr 1fr;gap:8px;margin-bottom:15px;display:grid}.agent-selector>strong{text-transform:capitalize;grid-column:1/-1;align-items:center;gap:7px;font-size:15px;display:flex}.agent-selector label{flex-direction:column;gap:5px;min-width:0;display:flex}.agent-selector label span{color:var(--muted);font-size:14px}.agent-selector select{border:1px solid var(--line-strong);background:#2d3142;border-radius:7px;width:100%;height:37px;padding:0 5px;font-size:15px}.seat-dot{border:1px solid #bfc0c0;border-radius:50%;width:8px;height:8px}.seat-dot.white{background:#fff}.seat-dot.black{background:#2d3142}.divider{color:var(--muted);align-items:center;gap:12px;margin:24px 0 16px;font-size:14px;display:flex}.divider:before,.divider:after{content:"";background:var(--line);flex:1;height:1px}.join-row{grid-template-columns:1fr 85px;gap:10px;display:grid}.code-input{font-family:var(--mono);letter-spacing:2px;text-transform:uppercase}.code-input::placeholder{letter-spacing:0;text-transform:none;color:var(--muted)}.game-layout{grid-template-columns:minmax(0,800px) minmax(380px,440px);justify-content:center;align-items:start;gap:32px;width:min(1680px,100%);margin:0 auto;padding:28px 40px 40px;display:grid}.board-column{justify-self:center;width:100%;min-width:0;max-width:1000px}.workspace-heading{justify-content:space-between;align-items:center;gap:12px;margin-bottom:22px;display:flex}.workspace-heading .eyebrow{font-size:12px}.workspace-heading h1{letter-spacing:-1px;margin:6px 0 0;font-size:clamp(19px,2vw,27px)}.live-pill{color:var(--accent);font:13px var(--mono);white-space:nowrap;border:1px solid #ef835433;border-radius:30px;padding:6px 9px}.board-toolbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;min-height:44px;display:flex}.toolbar-actions{align-items:center;gap:15px;font-size:14px;display:flex}.segmented{border:1px solid var(--line);background:#2d3142;border-radius:8px;padding:3px;display:inline-flex}.segmented button{height:36px;color:var(--muted);background:0 0;border:0;border-radius:5px;padding:0 14px;font-size:14px}.segmented button.active{color:var(--accent);background:#ef835426}.game-status{align-items:center;gap:7px;min-width:0;font-size:15px;display:flex}.game-status strong{text-overflow:ellipsis;white-space:nowrap;font-weight:500;overflow:hidden}.status-pulse{background:var(--accent);border-radius:50%;flex:none;width:6px;height:6px;box-shadow:0 0 10px #ef835470}.status-pulse.check{background:var(--worst)}.status-note{color:var(--muted);font-size:13px;font-style:normal}.player-bar{border:1px solid var(--line);background:#2d3142db;border-radius:12px;align-items:center;gap:11px;margin:12px 0;padding:12px 15px;display:flex}.player-bar.active{background:linear-gradient(100deg,#4f5d7580,#2d3142);border-color:#ef835452}.player-avatar{border:1px solid var(--line-strong);background:#4f5d75;border-radius:9px;flex:none;place-items:center;width:36px;height:36px;font-size:16px;display:grid}.player-avatar.white{color:#4f5d75;background:#fff}.player-avatar.black{color:#fff;background:#2d3142}.player-meta{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.player-meta strong{font-size:16px;font-weight:500}.player-meta span{color:var(--muted);overflow-wrap:anywhere;font-size:13px}.thinking-note{color:var(--accent);font-size:13px}.player-clock{text-align:center;border:1px solid var(--line);min-width:75px;font:24px var(--mono);font-variant-numeric:tabular-nums;color:var(--muted);background:#2d3142;border-radius:7px;padding:7px 11px}.player-clock.running{color:var(--accent);border-color:#ef835440}.player-clock.low{color:var(--worst);border-color:var(--worst)}.board-stage{aspect-ratio:1;border:7px solid #4f5d75;border-radius:12px;width:100%;position:relative;overflow:hidden;box-shadow:0 18px 70px #2d314255,0 0 0 1px #4f5d75}.board-stage.is-3d{background:radial-gradient(#4f5d75,#2d3142 80%);border-width:1px}.board3d-canvas{touch-action:none;inset:0;position:absolute!important}.board-loading{color:var(--accent);place-items:center;font-size:16px;display:grid;position:absolute;inset:0}.board2d{grid-template-rows:repeat(8,minmax(0,1fr));grid-template-columns:repeat(8,minmax(0,1fr));width:100%;height:100%;display:grid;position:relative;overflow:hidden;container-type:inline-size}.square{cursor:default;border:0;border-radius:0;min-width:0;min-height:0;padding:0;position:relative}.square.light{background:var(--board-light)}.square.dark{background:var(--board-dark)}.board2d.can-move .square{cursor:pointer}.square.last-move:before,.square.selected:before,.square.in-check:before{content:"";pointer-events:none;position:absolute;inset:0}.square.last-move:before{background:var(--last-move)}.square.selected:before{background:var(--selected)}.square.in-check:before{background:radial-gradient(circle,#ef8354cc,#ef835440 60%,#0000 72%)}.square.pressure-urgent:after,.square.pressure-guarded:after{content:"";z-index:4;pointer-events:none;border:2px solid #ef8354;border-radius:50%;position:absolute;inset:8%;box-shadow:0 0 0 1px #4f5d7566}.square.pressure-guarded:after{border-color:var(--silver);border-style:dashed}.square:focus-visible{outline-offset:-4px;z-index:5}.move-dot{z-index:5;aspect-ratio:1;background:#4f5d75a0;border-radius:50%;width:23%;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 0 0 2px #ef835455}.capture-ring{z-index:5;border:4px solid #ef8354;border-radius:50%;position:absolute;inset:2%}.rank-label,.file-label{z-index:1;font:13px var(--mono);pointer-events:none;position:absolute}.square.light .rank-label,.square.light .file-label{color:#4f5d75}.rank-label{top:2px;left:4px}.file-label{bottom:1px;right:4px}.piece-layer{z-index:2;pointer-events:none;position:absolute;inset:0}.piece2d{place-items:center;width:12.5%;height:12.5%;transition:transform .18s ease-out;display:grid;position:absolute;top:0;left:0}.piece-layer.no-motion .piece2d{transition:none}.piece2d>span,.diagram i{-webkit-user-select:none;user-select:none;font-family:Segoe UI Symbol,"Noto Sans Symbols 2",DejaVu Sans,Georgia,serif}.piece2d>span{filter:drop-shadow(0 3px 2px #2d314266);font-size:10cqw;line-height:1;transition:transform .15s}.piece2d.white-piece>span,.diagram .white-piece{color:#fff;-webkit-text-stroke:1.3px #4f5d75;text-shadow:0 1px #fff}.piece2d.black-piece>span,.diagram .black-piece{color:#2d3142;-webkit-text-stroke:.8px #ef8354}.diagram .white-piece{-webkit-text-stroke-width:.6px}.diagram .black-piece{-webkit-text-stroke-width:.4px}.piece2d.lifted>span{transform:scale(1.08)}.board-notice{z-index:10;text-align:center;pointer-events:none;background:#2d3142f2;border:1px solid #ef83545c;border-radius:14px;width:min(330px,85%);padding:22px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 20px 60px #2d314266}.board-notice strong{font-size:21px;display:block}.board-notice span{color:var(--ink-2);margin-top:9px;font-size:15px;display:block}.board-legend{color:var(--muted);flex-wrap:wrap;justify-content:center;align-items:center;gap:16px;margin-top:13px;font-size:13px;display:flex}.board-legend span{align-items:center;gap:6px;display:flex}.board-legend i{border-radius:50%;width:6px;height:6px}.coral-dot{background:var(--worst)}.silver-dot{background:var(--warn)}.move-tip{text-align:center;color:var(--muted);font-size:14px}.exploration-bar{background:#4f5d75;border:1px solid #ef835466;border-radius:10px;margin-top:15px;padding:14px}.exploration-bar strong{font-size:16px}.exploration-bar small{color:#ef8354;font-size:14px;display:block}.exploration-controls{font:14px var(--mono);justify-content:space-between;align-items:center;gap:8px;margin-top:10px;display:flex}.exploration-controls button{background:#2d3142;border:1px solid #ef8354;border-radius:6px;padding:7px 10px;font-size:14px}.game-panel{background:#2d3142e8;border:1px solid #4f5d75;border-radius:16px;min-width:0;overflow:hidden;box-shadow:0 15px 60px #2d314233}.game-panel>*+*{border-top:1px solid var(--line)}.intelligence-heading{background:linear-gradient(120deg,#4f5d7566,#0000);align-items:center;gap:12px;padding:21px 20px 18px;display:flex}.ai-orb{width:44px;height:44px;color:var(--accent);background:#ef835415;border:1px solid #ef835455;border-radius:10px;place-items:center;font-size:24px;display:grid}.intelligence-heading .eyebrow{letter-spacing:1.2px;font-size:11px}.intelligence-heading h2{letter-spacing:-.5px;margin:4px 0 0;font-size:22px}.phase-pill{color:var(--ink-2);border:1px solid var(--line-strong);border-radius:30px;margin-left:auto;padding:4px 7px;font-size:12px}.learning-tabs{border-bottom:1px solid var(--line);padding:0 14px;display:flex}.learning-tabs button{color:var(--muted);background:0 0;border:0;border-bottom:2px solid #0000;flex:1;padding:12px 2px;font-size:14px}.learning-tabs button span{font:12px var(--mono);opacity:.6;margin-right:3px}.learning-tabs button.active{color:var(--accent);border-bottom-color:var(--accent)}.teaching-content{color:var(--ink-2);padding:20px;font-size:15px}.teaching-content h3{color:var(--ink);margin:0 0 7px;font-size:16px}.teaching-content p{margin:0 0 14px;line-height:1.75}.lesson-step{gap:12px;margin-bottom:18px;display:flex}.lesson-step p{margin:0}.step-index{font:13px var(--mono);color:var(--accent);flex:none;padding-top:3px}.pressure-header{justify-content:space-between;align-items:center;gap:6px;margin-bottom:7px;font-size:13px;display:flex}.pressure-list{scrollbar-width:thin;gap:5px;max-height:230px;display:grid;overflow:auto}.pressure-item{background:#ef835407;border:1px solid #ef835424;border-radius:7px;align-items:center;gap:9px;padding:8px;display:flex}.pressure-item>code{width:29px;height:29px;color:var(--warn);font:15px var(--mono);background:#ef835416;border-radius:6px;flex:none;place-items:center;display:grid}.pressure-item>span:nth-child(2){flex:1}.pressure-item strong{font-size:14px;font-weight:500;display:block}.pressure-item small{color:var(--muted);font-size:12px;display:block}.pressure-item.urgent code{color:var(--worst);background:#ef835415}.pressure-tag{font:11px var(--mono);color:var(--warn)}.urgent .pressure-tag{color:var(--worst)}.teaching-content .map-caveat,.map-caveat{color:var(--muted);margin:9px 0 20px;font-size:13px;line-height:1.6}.thinking-question{border:1px solid #ef83542b;border-left:2px solid var(--accent);background:linear-gradient(110deg,#ef83540d,#0000);border-radius:8px;margin:18px 0;padding:15px}.thinking-question>span{font:11px var(--mono);letter-spacing:1px;color:var(--accent)}.thinking-question p{color:var(--ink);margin:8px 0;font-size:15px}.thinking-question small{color:var(--muted);font-size:13px}.engine-meta{color:var(--muted);font:12px/1.7 var(--mono);margin:12px 0}.candidate-card{border:1px solid var(--line-strong);background:#2d3142;border-radius:9px;margin-top:12px;padding:14px}.candidate-card:first-of-type{border-color:#ef83544f}.candidate-heading{align-items:center;gap:10px;margin-bottom:11px;display:flex}.candidate-heading>span{font:11px var(--mono);letter-spacing:.5px;color:var(--accent)}.candidate-heading strong{font:23px var(--mono);color:var(--ink)}.candidate-heading small{color:var(--muted);margin-left:auto;font-size:12px}.candidate-card p{font-size:14px}.variation-text{font:14px/1.8 var(--mono);color:var(--ink);background:#2d3142;border-radius:6px;margin-bottom:9px;padding:10px}.analysis-wait{color:var(--muted);padding:22px 0}.analysis-wait button{margin-top:10px;display:block}.opening-card,.master-card{border:1px solid var(--line);background:#4f5d75;border-radius:10px;margin-bottom:20px;padding:16px}.opening-card h3,.master-card h3{letter-spacing:-.4px;margin-top:9px;font-size:21px}.opening-card small,.master-card small{color:var(--muted);margin-top:9px;font-size:13px;display:block}.gambit-note{border-left:2px solid #ef8354;padding-left:10px}.master-card{background:linear-gradient(130deg,#4f5d7544,#4f5d75)}.master-card a{font-size:14px}.room-block,.coach-panel,.analysis-block,.panel-actions,.record-actions{padding:20px}.panel-kicker{font:12px var(--mono);color:var(--muted);text-transform:uppercase;letter-spacing:1.5px;margin:0 0 5px}.room-code-row{justify-content:space-between;align-items:center;gap:10px;display:flex}.room-code-row>strong{font:19px var(--mono);letter-spacing:3px}.room-code-actions{gap:10px;font-size:13px;display:flex}.room-description{color:var(--muted);margin:6px 0 0;font-size:14px}.copy-notice{color:var(--accent);font-size:14px}.agent-error{color:var(--worst);margin-top:12px;font-size:14px}.agent-error button{color:inherit;background:0 0;border:1px solid;border-radius:6px;margin-top:8px;padding:5px 9px}.recorder-panel{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;margin-top:16px;font-size:13px;display:flex}.recorder-heading{color:var(--muted);align-items:center;gap:10px;display:flex}.recorder-heading time{color:var(--worst);font-family:var(--mono)}.recorder-heading i{background:var(--worst);border-radius:50%;width:6px;height:6px;animation:1.2s infinite blink;display:inline-block}.recorder-start,.recorder-stop,.recorder-ready button{border:1px solid var(--line-strong);background:#2d3142;border-radius:6px;padding:5px 9px;font-size:13px}.recorder-stop,.recorder-error{color:var(--worst)}.recorder-ready{gap:8px;width:100%;display:grid}.recorder-ready video{border-radius:8px;width:100%}.recorder-ready>div{gap:8px;display:flex}.takeback-banner{color:var(--warn);background:#ef835409;padding:16px 20px;font-size:15px}.takeback-actions{gap:8px;margin-top:10px;display:flex}.takeback-actions button{border:1px solid var(--line-strong);background:#2d3142;border-radius:6px;padding:6px 12px;font-size:14px}.takeback-actions .accept{color:var(--accent)}.coach-heading{justify-content:space-between;align-items:center;gap:10px;font-size:16px;display:flex}.grade-badge{background:#ffffff08;border-radius:5px;padding:3px 7px;font-size:13px}.grade-best .grade-badge,.grade-excellent .grade-badge{color:var(--good)}.grade-good .grade-badge{color:var(--fine)}.grade-inaccuracy .grade-badge{color:var(--warn)}.grade-mistake .grade-badge{color:var(--bad)}.grade-blunder .grade-badge{color:var(--worst)}.coach-empty,.coach-loading{color:var(--muted);margin:10px 0 0;font-size:14px}.coach-lesson{margin-top:14px;font-size:15px}.coach-lesson>p{color:var(--ink-2);line-height:1.7}.coach-moves{grid-template-columns:1fr 1fr;gap:10px;display:grid}.coach-moves>span{border:1px solid var(--line);color:var(--muted);background:#2d3142;border-radius:8px;flex-direction:column;padding:11px;font-size:13px;display:flex}.coach-moves strong{color:var(--ink);font:20px var(--mono);margin:5px 0}.coach-moves small{font-size:13px}.coach-note strong{color:var(--ink);font-weight:500}.review-variations{gap:8px;display:grid}.review-variations .secondary-button{min-height:35px;font-size:14px}.coach-line{margin-top:14px}.coach-line>span{font:12px var(--mono);color:var(--muted)}.coach-line>div{gap:5px;margin-top:8px;display:grid}.coach-line-move{grid-template-columns:48px 1fr;gap:8px;font-size:14px;display:grid}.coach-line-move code{color:var(--accent);font-family:var(--mono)}.coach-line-move small{color:var(--muted);font-size:13px}.move-heading{justify-content:space-between;padding:18px 20px 10px;font-size:15px;display:flex}.move-heading span:last-child{color:var(--muted)}.move-list{scrollbar-width:thin;max-height:200px;padding:0 14px 16px;overflow-y:auto}.move-row{font:14px var(--mono);border-radius:5px;grid-template-columns:35px 1fr 1fr;padding:7px 8px;display:grid}.move-row>span{color:var(--muted)}.move-row strong{font-weight:400}.move-row.latest{color:var(--accent);background:#ef835411}.empty-moves{color:var(--muted);padding:0 20px 14px;font-size:14px}.analysis-block{color:var(--ink-2);font-size:15px;line-height:1.75}.analysis-title{color:var(--ink);margin:0;font-size:16px}.player-review,.key-moments{margin-top:14px}.analysis-block strong{color:var(--ink);font-weight:500}.key-moments ul{padding-left:18px}.analysis-failed{color:var(--worst)}.record-actions{gap:16px;font-size:14px;display:flex}.panel-actions{grid-template-columns:1fr 1fr;gap:8px;display:grid}.panel-actions .primary-button{margin:0}.panel-actions button{font-size:14px}.panel-error{padding:0 20px 16px;border-top:0!important}.dialog-backdrop,.history-backdrop{z-index:50;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#2d3142bb;position:fixed;inset:0}.dialog-backdrop{place-items:center;padding:20px;display:grid}.confirm-dialog{border:1px solid var(--line-strong);background:var(--surface);border-radius:16px;width:min(400px,100%);padding:26px;box-shadow:0 30px 80px #2d314277}.confirm-dialog h2{margin:0 0 10px;font-size:23px}.confirm-dialog p{color:var(--ink-2);margin-bottom:24px;font-size:16px}.dialog-actions{grid-template-columns:1fr 1fr;gap:10px;display:grid}.dialog-actions .primary-button{margin:0}.primary-button.danger-confirm{background:var(--worst);border-color:var(--worst);color:#2d3142}.history-backdrop{justify-content:flex-end;display:flex}.history-drawer{background:var(--bg);border-left:1px solid var(--line-strong);flex-direction:column;width:min(560px,100%);height:100%;display:flex}.history-drawer>header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:baseline;gap:10px;padding:26px;display:flex}.history-drawer h2{margin:0;font-size:23px}.history-drawer header p{color:var(--muted);margin:5px 0 0;font-size:15px}.history-list{flex:1;padding:8px 25px 25px;overflow:auto}.history-state{text-align:center;color:var(--muted);padding:60px 0}.match-card{border-bottom:1px solid var(--line)}.match-card summary{cursor:pointer;grid-template-columns:22px minmax(0,1fr) auto;align-items:baseline;gap:10px;padding:18px 0;list-style:none;display:grid}.match-card summary::-webkit-details-marker{display:none}.match-outcome{font-family:var(--mono)}.match-outcome.win{color:var(--good)}.match-outcome.loss{color:var(--worst)}.match-outcome.draw,.match-outcome.evaluation{color:var(--muted)}.match-summary-copy{flex-direction:column;min-width:0;display:flex}.match-summary-copy strong{text-overflow:ellipsis;white-space:nowrap;font-size:16px;font-weight:500;overflow:hidden}.match-summary-copy strong span,.match-summary-copy>span{color:var(--muted);font-size:14px}.match-card time{color:var(--muted);font-size:13px}.match-details{grid-template-columns:repeat(4,1fr);gap:10px;padding:0 0 20px 32px;font-size:14px;display:grid}.match-details>div{flex-direction:column;display:flex}.match-details>div span{color:var(--muted)}.match-details>div strong{text-transform:capitalize;font-weight:500}.match-details p{color:var(--ink-2);font:14px/1.8 var(--mono);grid-column:1/-1}.match-details button{grid-column:1/-1;justify-self:start}@keyframes blink{50%{opacity:.35}}@keyframes fade-in{0%{opacity:0;transform:translateY(4px)}}@media (width>=1200px){.workspace-heading{margin-bottom:16px}.workspace-heading h1{font-size:30px}}@media (width<=1100px){.split-layout{grid-template-columns:minmax(0,1fr) 370px;gap:40px;padding:50px 28px}.game-layout{grid-template-columns:minmax(0,1fr) 370px;gap:22px;padding-inline:24px}.site-header{padding-inline:24px}.featured-position{grid-template-columns:150px 1fr;gap:15px}.diagram i{font-size:17px}.live-pill,.status-note{display:none}}@media (width<=1050px){.game-layout{grid-template-columns:1fr;max-width:1000px}.board-column{max-width:none;position:static}.game-panel{width:100%}.split-layout{grid-template-columns:1fr;gap:36px;max-width:650px}.intro h1{font-size:55px}.featured-position{grid-template-columns:170px 1fr}.card{width:100%}.teaching-content,.teaching-content h3{font-size:16px}.learning-tabs button,.pressure-item strong{font-size:15px}.pressure-item small{font-size:14px}.pressure-list{max-height:none}}@media (width<=480px){.site-header{gap:10px;padding:16px}.wordmark{gap:7px;font-size:18px}.wordmark>span:first-child{width:31px;height:31px;font-size:25px}.header-nav{gap:12px;font-size:14px}.account-name{display:none}.split-layout{padding:35px 20px}.intro h1{letter-spacing:-2px;font-size:45px}.lede{font-size:16px}.feature-chips{gap:6px}.feature-chips span{padding:6px;font-size:12px}.featured-position{grid-template-columns:135px 1fr;gap:12px;padding:12px}.diagram i{font-size:16px}.featured-position figcaption{font-size:13px}.card{padding:24px 20px}.game-layout{gap:20px;padding:20px 12px 30px}.workspace-heading{margin-bottom:16px}.workspace-heading h1{font-size:21px}.game-status{font-size:13px}.toolbar-actions{gap:9px;font-size:13px}.board-stage{border-width:4px;border-radius:8px}.player-bar{padding:9px}.player-clock{min-width:65px;font-size:16px}.board-legend{gap:9px;font-size:12px}.intelligence-heading{flex-wrap:wrap;padding:18px 16px}.intelligence-heading h2{font-size:20px}.intelligence-heading .eyebrow{font-size:10px}.phase-pill{font-size:11px}.learning-tabs button{font-size:13px}.learning-tabs button span{display:none}.board-legend{justify-content:flex-start}.toolbar-actions{flex-wrap:wrap}.status-note{display:none}.teaching-content,.coach-panel,.room-block{padding:16px}.rank-label,.file-label,.brand-ai{font-size:11px}.exploration-controls{gap:5px}.exploration-controls button{padding:7px;font-size:13px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}.auth-layout{grid-template-columns:minmax(0,1.45fr) minmax(360px,1fr);align-items:center;gap:clamp(40px,5vw,90px);width:min(1520px,100%);margin:0 auto;padding:58px 40px 48px;display:grid}.auth-story h1{letter-spacing:-2px;margin:20px 0;font-size:clamp(36px,3.6vw,58px);line-height:1.12}.auth-story h1 em{color:var(--accent);font-style:normal}.auth-story .lede{max-width:620px;font-size:18px;line-height:1.7}.auth-showcase{grid-template-columns:minmax(230px,1.25fr) minmax(180px,1fr);align-items:center;gap:26px;margin-top:32px;display:grid}.auth-position{border:1px solid var(--line-strong);background:linear-gradient(145deg,#4f5d75,#2d3142);border-radius:16px;padding:18px;box-shadow:0 20px 60px #2d314233}.showcase-heading{font:10px var(--mono);color:var(--warn);flex-wrap:wrap;justify-content:space-between;gap:8px;margin-bottom:14px;display:flex}.showcase-heading span:last-child{color:var(--ink-2)}.auth-position .featured-position{background:0 0;border:0;margin:0;padding:0;display:block}.auth-position .diagram{border-color:#bfc0c0;container-type:inline-size}.auth-position .diagram i{font-size:10cqw}.auth-position .featured-position figcaption{font-size:12px;line-height:1.6}.auth-learning-path{gap:22px;display:grid}.auth-learning-path>div{border-left:1px solid var(--line-strong);padding-left:18px}.auth-learning-path>div>span{color:var(--warn);font:12px var(--mono)}.auth-learning-path h3{margin:6px 0;font-size:17px}.auth-learning-path p{color:var(--muted);margin:0;font-size:14px;line-height:1.7}.auth-form-column{justify-self:end;width:100%;max-width:480px}.auth-card{padding:36px}.auth-emblem{width:54px;height:54px;color:var(--accent);background:#ef835412;border:1px solid #ef835440;border-radius:14px;place-items:center;margin-bottom:26px;font-size:39px;display:grid}.auth-card .eyebrow{letter-spacing:1px;font-size:10px}.auth-card h2{letter-spacing:-1px;margin-bottom:10px;font-size:32px}.auth-description{color:var(--ink-2);margin:0 0 24px;font-size:15px;line-height:1.7}.auth-mode-picker{border:1px solid var(--line);background:#2d3142;border-radius:10px;gap:5px;margin-bottom:24px;padding:5px;display:flex}.auth-mode-picker button{color:var(--muted);background:0 0;border:0;border-radius:7px;flex:1;padding:10px;font-size:14px}.auth-mode-picker button[aria-pressed=true]{color:var(--ink);background:#4f5d75;box-shadow:inset 0 0 0 1px #ef835438}.auth-card .text-input{height:52px}.auth-card .primary-button{min-height:52px;margin-top:26px}.auth-save-note{color:var(--muted);text-align:center;margin-top:20px;padding:0 15px;font-size:13px;line-height:1.8}.game-sidebar>.workspace-heading{border-bottom:1px solid var(--line);grid-column:1/-1;margin:0;padding-bottom:22px}.session-heading-actions{align-items:center;gap:22px;display:flex}.session-code{font:14px var(--mono);color:var(--muted);white-space:nowrap}.session-heading-actions .secondary-button{white-space:nowrap;width:auto}.board-column{max-width:1000px}.players-strip{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.players-strip .player-bar{min-width:0;margin:10px 0 16px}.players-strip .player-meta strong{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.players-strip .player-meta span{text-overflow:ellipsis;white-space:nowrap;display:block;overflow:hidden}.players-strip .thinking-note{display:none}.game-panel{scrollbar-width:thin;scrollbar-color:var(--line-strong) transparent;max-height:calc(100dvh - 40px);position:sticky;top:20px;overflow-y:auto}.session-details{border:1px solid var(--line);background:#2d3142;border-radius:12px}.session-details>summary,.move-history-details>summary{cursor:pointer;color:var(--ink-2);padding:17px 20px;font-size:15px}.move-history-details>summary>span{color:var(--muted);margin-left:10px;font-size:13px}.session-details .room-block{border-top:1px solid var(--line)}@media (width<=1200px){.auth-layout{grid-template-columns:minmax(0,1fr) 380px;gap:35px;padding-inline:28px}.auth-showcase{grid-template-columns:1fr;max-width:400px}.auth-learning-path{display:none}.players-strip .player-clock{min-width:66px;padding:7px;font-size:20px}.players-strip .player-avatar{width:30px;height:30px}.players-strip .player-bar{gap:8px;padding:10px}}@media (width<=1050px){.game-panel{max-height:none;position:static;overflow:visible}.game-sidebar>.workspace-heading{align-items:flex-start}}@media (width<=800px){.auth-layout{grid-template-columns:1fr;gap:30px;max-width:600px;padding-top:32px}.auth-form-column{justify-self:stretch;max-width:none}.auth-story h1{font-size:39px}.auth-story .lede{font-size:16px}.auth-showcase{display:none}.auth-card{padding:28px}}@media (width<=580px){.session-heading-actions{flex-wrap:wrap;justify-content:flex-end;gap:8px}.session-heading-actions .secondary-button{min-height:36px;padding:8px;font-size:12px}.session-code{font-size:11px}.game-sidebar>.workspace-heading{gap:15px}.workspace-heading h1{font-size:22px}.workspace-heading .eyebrow{font-size:10px}.players-strip{gap:8px}.players-strip .player-bar{flex-wrap:wrap;gap:6px;padding:10px}.players-strip .player-meta strong{font-size:14px}.players-strip .player-meta span{font-size:11px}.players-strip .player-clock{width:100%;margin-top:4px;font-size:22px}.players-strip .player-avatar{width:26px;height:26px;font-size:13px}.auth-layout{padding-inline:20px}.auth-card{padding:24px}.auth-story h1{font-size:34px}.auth-card h2{font-size:28px}}.game-shell .site-header.compact{padding-block:12px}.game-sidebar>.workspace-heading{padding-bottom:14px}.game-layout{row-gap:16px;padding-top:18px}body:has(.game-shell){min-height:0;overflow:hidden}.game-shell{height:100dvh;min-height:0;overflow:hidden}.game-shell>.site-header{flex:0 0 58px;height:58px;padding:8px 24px}.game-shell .wordmark>span:first-child{width:34px;height:34px;font-size:26px}.game-shell>.screen{min-height:0;animation:none;display:flex}.game-shell>.site-footer{display:none}.game-layout{grid-template-rows:auto minmax(0,1fr);grid-template-columns:minmax(0,1fr) minmax(340px,400px);gap:12px 24px;width:min(1480px,100%);height:100%;min-height:0;padding:12px 24px 16px}.game-sidebar>.workspace-heading{align-items:center;gap:20px;min-width:0;padding:0 0 10px}.workspace-heading .eyebrow{margin-bottom:3px;font-size:10px}.game-layout .workspace-heading h1{letter-spacing:-.6px;margin:0;font-size:22px}.workspace-heading>.board-toolbar{flex-wrap:nowrap;gap:16px;min-height:40px;margin-left:auto}.workspace-heading .session-heading-actions{gap:12px}.workspace-heading .session-code{font-size:12px}.workspace-heading .session-heading-actions button{min-height:38px;padding:8px 12px;font-size:13px}.board-column{flex-direction:column;gap:6px;width:100%;max-width:none;height:100%;min-height:0;display:flex}.board-column>*{flex:none}.board-column>.board-viewport{flex:1 1 0;justify-content:center;align-items:center;width:100%;min-height:0;display:flex;container-type:size}.board-viewport>.board-stage{border-width:5px;flex:none;width:min(100cqw,100cqh);max-width:100%;height:min(100cqw,100cqh);max-height:100%;margin:0}.board-viewport>.board-stage.is-3d{border-width:1px}.players-strip{gap:10px}.players-strip .player-bar{flex-wrap:nowrap;gap:8px;margin:0;padding:8px 12px}.players-strip .player-avatar{width:30px;height:30px;font-size:14px}.players-strip .player-meta strong{font-size:14px}.players-strip .player-meta span{font-size:11px}.players-strip .player-clock{width:auto;min-width:68px;margin:0;padding:5px 8px;font-size:20px}.board-column .board-legend{justify-content:center;gap:12px;min-height:26px;margin:0;font-size:11px}.game-controls .panel-actions{flex-wrap:wrap;gap:8px;margin:0;padding:0;display:flex}.game-controls .panel-actions button{flex:1;width:auto;min-width:0;min-height:40px;padding:8px 12px;font-size:13px}.board-column .move-tip{display:none}.board-column .takeback-banner,.board-column .agent-error,.board-column .panel-error{max-height:90px;margin:0;padding:8px 12px;font-size:12px;overflow-y:auto}.board-column .exploration-bar{margin:0;padding:8px 12px}.board-column .exploration-bar>div:first-child{flex-wrap:wrap;gap:12px;display:flex}.board-column .exploration-controls{margin-top:5px}.game-sidebar{flex-direction:column;gap:12px;min-width:0;height:100%;min-height:0;display:flex}.game-sidebar>.game-controls{flex:none;gap:10px;display:grid}.game-sidebar>.game-panel{overscroll-behavior:contain;scrollbar-gutter:stable;flex:1;height:100%;min-height:0;max-height:none;position:static;overflow-y:auto}.game-panel .session-details{border-inline:0;border-radius:0}.mobile-workspace-tabs{display:none}.primary-button,.primary-button.danger-confirm,.square.light .rank-label,.square.light .file-label{color:var(--jet)}.square.dark .rank-label,.square.dark .file-label{color:var(--white)}.square.pressure-guarded:after{border-color:var(--white)}.piece2d.white-piece>span,.diagram .white-piece{color:var(--white);-webkit-text-stroke-color:var(--jet)}.piece2d.black-piece>span,.diagram .black-piece{color:var(--jet);-webkit-text-stroke-color:var(--silver)}.pressure-item{background:#bfc0c008;border-color:#bfc0c044}.pressure-item>code{color:var(--silver);background:#bfc0c018}.pressure-item.urgent{background:#ef835408;border-color:#ef835455}.pressure-item.urgent>code{color:var(--coral);background:#ef835418}.pressure-tag{color:var(--silver)}.square.pressure-urgent:after{border-color:var(--coral)}@media (width>=901px) and (height<=740px){.game-shell>.site-header{flex-basis:48px;height:48px}.game-layout{gap:8px 20px;padding-block:8px}.workspace-heading .eyebrow{display:none}.game-layout .workspace-heading h1{font-size:19px}.workspace-heading .session-code{display:none}}@media (width<=1100px) and (width>=901px){.workspace-heading .session-code,.workspace-heading .eyebrow,.workspace-heading .status-note{display:none}.game-layout .workspace-heading h1{font-size:19px}.game-layout{grid-template-columns:minmax(0,1fr) 350px;gap:10px 16px;padding-inline:16px}.workspace-heading>.board-toolbar{gap:10px}}@media (width<=900px){.game-shell>.site-header{flex-basis:52px;height:52px;padding:6px 12px}.game-shell .header-nav{gap:12px;font-size:13px}.game-shell .account-name{display:none}.game-layout{max-width:none;padding:8px 10px max(8px, env(safe-area-inset-bottom));grid-template-rows:auto auto auto minmax(0,1fr);grid-template-columns:minmax(0,1fr);gap:8px}.game-sidebar>.workspace-heading{border:0;grid-area:1/1;padding:0}.workspace-heading .session-heading-actions{display:none}.workspace-heading>.board-toolbar{justify-content:space-between;gap:8px;width:100%;min-height:40px;margin:0}.workspace-heading .game-status{font-size:12px}.workspace-heading .toolbar-actions{flex-wrap:nowrap;gap:10px;font-size:12px}.workspace-heading .segmented button{height:34px;padding:0 11px}.mobile-workspace-tabs{background:var(--jet);border:1px solid var(--line);border-radius:9px;grid-area:2/1;gap:4px;padding:3px;display:flex}.mobile-workspace-tabs button{min-height:38px;color:var(--silver);background:0 0;border:0;border-radius:6px;flex:1;font-size:14px}.mobile-workspace-tabs button[aria-pressed=true]{background:var(--slate);color:var(--white);box-shadow:inset 0 -2px var(--coral)}.game-layout>.board-column{grid-area:4/1}.game-sidebar{display:contents}.game-sidebar>.game-controls{grid-area:3/1}.game-sidebar>.game-panel{grid-area:3/1/5}.mobile-view-board .game-panel,.mobile-view-coach>.board-column,.mobile-view-coach .game-controls{display:none}.game-sidebar>.game-panel{height:100%;min-height:0;overflow-y:auto}.players-strip .player-bar{gap:6px;padding:7px 8px}.players-strip .player-avatar{display:none}.players-strip .player-meta strong{font-size:13px}.players-strip .player-meta span{font-size:10px}.players-strip .player-clock{min-width:58px;padding:5px;font-size:18px}.board-column .board-legend{gap:8px;min-height:24px;font-size:10px}.game-controls .panel-actions button{min-height:44px;padding:8px 4px;font-size:12px}.board-column .exploration-bar small{font-size:10px}.board-column .exploration-controls button{min-height:36px;padding:8px;font-size:11px}}@media (width<=900px) and (orientation:landscape) and (height<=500px){.game-shell>.site-header{display:none}.game-layout{grid-template-rows:auto minmax(0,1fr);grid-template-columns:minmax(0,1fr) 220px;gap:6px;padding:6px 12px}.game-sidebar>.workspace-heading{grid-column:1}.mobile-workspace-tabs{grid-area:1/2}.mobile-workspace-tabs button{min-height:34px;font-size:12px}.game-layout>.board-column{grid-area:2/1}.game-sidebar>.game-controls{grid-area:2/2;align-self:start}.game-sidebar>.game-panel{grid-area:2/1/auto/-1}.players-strip{grid-template-columns:1fr}.game-controls .panel-actions{flex-wrap:wrap}.game-controls .panel-actions button{flex:40%;min-height:36px}}@media (width>=901px){.game-layout{grid-template-rows:minmax(0,1fr);grid-template-columns:minmax(0,1fr) clamp(340px,34vw,480px);column-gap:20px;width:100%;max-width:none;padding-inline:16px}.game-sidebar>.workspace-heading{flex-direction:column;flex:none;align-items:stretch;gap:10px}.workspace-heading>.board-toolbar{flex-direction:column;align-items:stretch;gap:10px;width:100%;margin:0}.workspace-heading .toolbar-actions,.workspace-heading .session-heading-actions{justify-content:space-between}.workspace-heading .game-status{flex-wrap:wrap}.workspace-heading .game-status strong{white-space:normal;overflow-wrap:anywhere}.workspace-heading .session-code,.workspace-heading .status-note{display:inline}}.intelligence-heading{padding:14px 20px}.intelligence-heading h2{text-transform:capitalize;margin:0;font-size:18px}.highlight-help{color:var(--muted);margin:10px 0 18px;font-size:12px}.highlight-help summary,.master-card summary{cursor:pointer}.highlight-help p{margin:8px 0 0;font-size:12px}