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.reveal{opacity:1;transform:none}.js-motion .reveal{opacity:0;transform:translateY(27px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.8,.2,1)}.js-motion .reveal.visible{opacity:1;transform:none}@keyframes heroDrift{from{transform:scale(1.10)}to{transform:scale(1.035)}}@keyframes legalAppear{from{transform:scale(.1);opacity:0}to{transform:scale(1);opacity:1}}@keyframes winGlow{from{box-shadow:0 0 0 rgba(198,167,115,.1)}to{box-shadow:0 0 30px rgba(198,167,115,.5)}}.game-state.won{animation:winGlow .7s ease-in-out alternate 3}.piece-drag{z-index:201;pointer-events:none;display:grid;place-items:center;filter:drop-shadow(0 10px 8px #0007);will-change:left,top}.brand.long-name .brand-type strong{font-size:13px;letter-spacing:.08em}.piece-flight,.piece-drag{position:fixed;z-index:200;pointer-events:none;margin:0;display:grid;place-items:center;line-height:1;will-change:transform;filter:drop-shadow(0 4px 2px rgba(0,0,0,.3))}
@media(max-width:1200px){.page-width,.nav-wrap{width:min(calc(100% - 72px),var(--max))}.nav-links{gap:18px}.nav-links a{font-size:9px}.nav-cta{padding:12px 14px}.brand-type strong{font-size:15px;letter-spacing:.12em}.board-frame-top,.board-frame-bottom{padding-inline:14px}.player-line{padding-inline:17px}.game-console{padding:26px}.section-heading-block{gap:45px}.piece{font-size:clamp(32px,4.5vw,55px)}}
@media(max-width:990px){.site-header{position:sticky;top:0}.nav-wrap{height:75px}.nav-links{position:absolute;left:0;right:0;top:75px;display:none;flex-direction:column;align-items:stretch;gap:0;background:#121e19;border-bottom:1px solid var(--gold);padding:14px 36px 28px;box-shadow:0 26px 40px #0006}.nav-links.open{display:flex}.nav-links a{font-size:12px;padding:15px 0;border-bottom:1px solid var(--line-soft)}.mobile-nav-action{display:block;margin-top:17px;background:var(--gold);color:#0b1211;border:0;padding:15px;font-size:10px;letter-spacing:.15em;font-weight:700}.menu-toggle{display:flex;flex-direction:column;gap:5px;justify-content:center;align-items:center;flex-shrink:0;width:39px;height:39px;border:1px solid var(--line);background:transparent}.menu-toggle span{width:18px;height:1px;background:var(--gold)}.menu-toggle.open span:first-child{transform:translateY(6px) rotate(45deg)}.menu-toggle.open span:nth-child(2){opacity:0}.menu-toggle.open span:last-child{transform:translateY(-6px) rotate(-45deg)}.nav-cta{margin-left:auto}.play-layout{grid-template-columns:minmax(0,1fr)}.board-frame{width:min(100%,680px);margin:auto}.game-console{width:min(100%,680px);margin:auto;min-height:0;padding:34px}.game-console h3{font-size:72px}.piece{font-size:clamp(30px,7vw,63px)}.mode-btn{min-height:61px}.method-grid{grid-template-columns:1fr}.method-card{min-height:0;padding:27px 35px}.method-card + .method-card{border-left:0;border-top:1px solid var(--line)}.method-icon{margin-top:10px;font-size:44px}.method-card h3{margin-top:12px}.method-card p{max-width:600px}.philosophy-copy{padding:65px 45px}.philosophy-copy h2{font-size:75px}.sessions-grid{gap:12px}.session-card{padding:25px 20px}.session-card h3{font-size:35px}.footer-right{gap:17px}.hero h1{font-size:clamp(85px,9vw,116px)}}
@media(max-width:680px){.page-width,.nav-wrap{width:calc(100% - 38px)}.announcement{padding:0 19px;letter-spacing:.17em;font-size:8px}.nav-wrap{height:70px;gap:11px}.site-header{top:0}.nav-links{top:70px;padding-inline:20px}.nav-cta{display:none}.brand-symbol{height:34px;width:34px}.brand-symbol span{font-size:27px}.brand{gap:12px}.brand-type strong{font-size:13px;letter-spacing:.1em}.brand-type small{font-size:8px}.piece-drag{z-index:201;pointer-events:none;display:grid;place-items:center;filter:drop-shadow(0 10px 8px #0007);will-change:left,top}.brand.long-name .brand-type strong{font-size:11px;letter-spacing:.02em}.hero{min-height:655px}.hero-image{inset:0;background-position:52% center;opacity:.75}.hero-vignette{background:linear-gradient(90deg,rgba(11,18,17,.91),rgba(11,18,17,.55)),linear-gradient(0deg,#0b1211 0,transparent 43%,rgba(11,18,17,.06))}.hero-content{padding-top:100px;padding-bottom:25px}.hero h1{font-size:clamp(72px,13.8vw,104px);margin:44px 0 32px;line-height:.82}.hero-description{max-width:370px;font-size:13px}.eyebrow,.overline{font-size:9px;letter-spacing:.18em}.hero-buttons{gap:10px;margin-top:29px}.hero-buttons .button{min-height:48px;padding-inline:17px;font-size:9px;gap:13px}.hero-buttons .button-line{padding-inline:0}.hero-foot{font-size:8px;letter-spacing:.12em}.hero-foot span:first-child{max-width:155px}.qualities-inner{gap:8px;flex-wrap:wrap;justify-content:center;padding-block:18px}.qualities span{font-size:13px}.qualities i{font-size:10px}.play-section{padding:88px 0 90px}.section-heading-block{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:32px}.section-heading-block h2{font-size:clamp(65px,11vw,86px)}.section-heading-block>p{font-size:13px}.board-frame{padding:5px}.board-frame-top,.board-frame-bottom{min-height:37px;padding-inline:9px;font-size:8px;letter-spacing:.1em}.player-line{min-height:57px;padding:7px 9px;gap:8px}.player-avatar{height:33px;width:33px;font-size:23px}.player-line strong{font-size:10px}.player-line small{font-size:8px}.player-line div:nth-child(2){min-width:69px}.captured-pieces{font-size:19px}.board-mat{padding:5px}.piece{font-size:clamp(28px,8vw,51px)}.square-coordinate{font-size:8px}.square-file{right:2px;bottom:2px}.square-rank{left:2px;top:2px}.game-console{padding:24px 19px}.game-console h3{font-size:66px}.board-bottomline{font-size:8px;line-height:2}.board-bottomline span{padding-inline:9px}.method-section{padding:87px 0}.center-intro{margin-bottom:37px}.center-intro h2{font-size:clamp(62px,10.5vw,85px)}.center-intro>p{font-size:13px;line-height:1.8}.method-card{padding:26px}.philosophy-section{grid-template-columns:1fr}.philosophy-image{min-height:450px}.philosophy-copy{padding:84px 25px}.philosophy-copy h2{font-size:clamp(78px,12vw,105px)}.philosophy-copy>p{font-size:13px}.sessions-section{padding:86px 0}.sessions-grid{grid-template-columns:1fr;gap:12px}.session-card{min-height:275px;padding:25px}.session-icon{margin-top:19px;font-size:49px}.session-card h3{font-size:40px}.cta-section{padding:95px 0}.cta-inner h2{font-size:clamp(70px,12vw,100px)}.footer-main{flex-direction:column;align-items:flex-start;padding-bottom:31px}.footer-right{row-gap:12px}.footer-bottom{flex-direction:column;gap:10px;line-height:1.7}.modal{padding:30px 25px}.modal h2{font-size:53px}}
@media(max-width:390px){.announcement{font-size:7px}.hero h1{font-size:71px}.hero-buttons{align-items:flex-start;flex-direction:column}.hero-buttons .button-line{min-height:40px}.hero-foot>span:first-child{display:none}.hero-foot{justify-content:flex-end}.qualities span{font-size:11px}.mode-btn{font-size:8px}.game-actions .button{font-size:8px;padding:0 8px}.board-frame-bottom>span:last-child{display:none}.game-state{padding:14px 10px}.state-title{font-size:26px}.piece{font-size:clamp(25px,8vw,33px)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}.reveal,.js-motion .reveal{opacity:1;transform:none}}

#booking-form[hidden]{display:none!important}

/* Local WebAssembly Stockfish controls. Hidden outside computer mode. */
.engine-controls[hidden]{display:none!important}
.engine-controls{border:1px solid var(--line);background:rgba(8,17,14,.54);padding:17px 17px 12px;margin:-5px 0 20px;animation:engineIn .25s ease-out}
.engine-control-header{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:11px}
.engine-control-header label,.engine-indicator{font:700 9px/1.4 var(--sans);letter-spacing:.13em;color:var(--gold)}
.engine-indicator{color:#a8b6a8;font-weight:500;text-align:right;letter-spacing:.06em}
.engine-indicator.ready{color:#c3c897}
.engine-indicator.error{color:#e0ac91}
#engine-difficulty{display:block;width:100%;min-height:42px;padding:0 33px 0 13px;background:#15251e;color:var(--cream);border:1px solid #72684e;border-radius:0;font:600 11px/1.4 var(--sans);letter-spacing:.07em;cursor:pointer;color-scheme:dark}
#engine-difficulty:focus-visible{outline:2px solid var(--goldlight);outline-offset:3px}
#engine-difficulty:disabled{opacity:.6;cursor:wait}
.engine-subtitle{margin:11px 0 0;font:400 10px/1.6 var(--sans);color:#a8b6a8}
@keyframes engineIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:680px){.engine-controls{padding:14px}.engine-control-header{align-items:flex-start}.engine-control-header label,.engine-indicator{font-size:8px}}
@media(prefers-reduced-motion:reduce){.engine-controls{animation:none}}

/* Stockfish Pro: fine-grained opponent settings and dedicated analysis studio. */
.engine-controls{padding:clamp(16px,2.2vw,25px);margin:0 0 22px;background:linear-gradient(144deg,#17251f,#0a1511);border:1px solid rgba(198,167,115,.42)}
.engine-controls [hidden],.engine-troubleshooting[hidden],.evaluation-strip[hidden]{display:none!important}
.mode-switch{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}
.mode-btn{min-width:0;padding-inline:8px}
.engine-control-header{padding-bottom:14px;border-bottom:1px solid var(--line-soft);margin-bottom:20px;align-items:center}
.engine-kicker{color:var(--gold);font:700 10px/1.5 var(--sans);letter-spacing:.15em}
.engine-indicator{letter-spacing:.08em}
.engine-input-top{display:flex;justify-content:space-between;align-items:baseline;gap:15px;margin:18px 0 13px}
.engine-input-top label,.engine-field-pair label,.analysis-heading,.fen-entry>label{font:700 10px/1.5 var(--sans);color:var(--gold);letter-spacing:.14em}
.engine-input-top output{color:var(--cream);font:500 21px/1 var(--serif)}
.gold-slider{width:100%;accent-color:var(--gold);height:7px;cursor:pointer;display:block}
.slider-labels{display:flex;justify-content:space-between;gap:12px;margin-top:10px;color:#a3b2a4;font:600 9px/1.5 var(--sans);letter-spacing:.07em}
.engine-field-pair{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:20px 0 10px}
.engine-field-pair label{display:flex;flex-direction:column;gap:8px;min-width:0}
.engine-field-pair input,.engine-field-pair select,.fen-entry textarea{width:100%;min-width:0;min-height:42px;padding:11px 12px;background:#0a1411;color:var(--cream);border:1px solid rgba(198,167,115,.45);border-radius:0;outline-offset:3px;font:500 14px/1.4 var(--sans);color-scheme:dark}
.engine-field-pair input:focus,.engine-field-pair select:focus,.fen-entry textarea:focus{border-color:var(--goldlight);outline:1px solid var(--goldlight)}
.engine-subtitle{font:400 12px/1.65 var(--sans);letter-spacing:normal;color:#bbc2b7}
.engine-footer{margin:24px 0 0;padding-top:14px;border-top:1px solid var(--line-soft);color:#abbcac;letter-spacing:.08em;font:600 9px/1.6 var(--sans)}
.analysis-summary{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0;padding:16px 0;border-block:1px solid var(--line-soft)}
.analysis-summary>div{display:flex;flex-direction:column;gap:7px}.analysis-summary small{font:700 9px/1.5 var(--sans);letter-spacing:.15em;color:var(--gold)}
.analysis-summary strong{font:400 34px/1 var(--serif);color:var(--cream)}
.analysis-heading{display:flex;justify-content:space-between;align-items:center;margin:15px 0 12px}.analysis-heading span{font-size:9px;color:#aab5ab}
.analysis-lines{min-height:127px;display:flex;flex-direction:column;gap:7px}
.analysis-line{display:grid;grid-template-columns:27px minmax(0,1fr) 55px;align-items:center;gap:7px;border:1px solid var(--line-soft);padding:11px 9px;min-height:40px;background:rgba(255,255,255,.025)}
.analysis-rank{font:600 10px/1 var(--sans);color:var(--gold)}
.analysis-variation{font:500 12px/1.6 var(--sans);color:var(--cream);word-break:break-word}
.analysis-score{font:600 12px/1 var(--sans);color:var(--goldlight);text-align:right}
.analysis-actions{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;margin:14px 0 20px}
.analysis-button,.engine-troubleshooting button{padding:11px 13px;background:transparent;border:1px solid var(--line);color:var(--goldlight);font:700 10px/1.4 var(--sans);letter-spacing:.1em;transition:background .2s,border-color .2s}
.analysis-button:hover,.engine-troubleshooting button:hover{background:rgba(198,167,115,.14);border-color:var(--gold)}
.arrow-toggle{display:flex;align-items:center;gap:8px;color:var(--cream);font:600 10px/1.4 var(--sans);letter-spacing:.04em;cursor:pointer}
.arrow-toggle input{accent-color:var(--gold)}
.fen-entry{border-top:1px solid var(--line-soft);padding-top:19px;display:flex;flex-direction:column;gap:10px}
.fen-entry textarea{resize:vertical;font-size:12px;min-height:58px}
.fen-entry .analysis-button{align-self:flex-start}
.fen-error{font:500 12px/1.5 var(--sans);color:#f0bca1;margin:0}
.engine-troubleshooting{margin-top:15px;padding:14px;border:1px solid #b68265;color:#ebc9b5;font:400 12px/1.6 var(--sans);word-break:break-word}
.engine-troubleshooting code{font-size:11px}
.engine-troubleshooting button{margin-top:8px}
.board-mat:has(.evaluation-strip:not([hidden])){display:grid;grid-template-columns:18px minmax(0,1fr);gap:8px;align-items:stretch}
.evaluation-strip{position:relative;min-height:0;width:100%;border:1px solid rgba(198,167,115,.55);background:#15201c;overflow:hidden}
.eval-white{position:absolute;bottom:0;left:0;right:0;background:#e8dbc0;height:50%;transition:height .5s cubic-bezier(.2,.8,.2,1)}
.eval-black{position:absolute;inset:0;background:#15201c}
.engine-arrow{pointer-events:none;position:absolute;inset:0;width:100%;height:100%;z-index:4;overflow:visible;filter:drop-shadow(0 2px 3px #0009)}
@media(max-width:680px){.engine-controls{padding:15px}.engine-input-top output{font-size:20px}.analysis-line{grid-template-columns:23px minmax(0,1fr) 47px}.board-mat:has(.evaluation-strip:not([hidden])){grid-template-columns:12px minmax(0,1fr);gap:5px}}
@media(prefers-reduced-motion:reduce){.eval-white{transition:none}}

.engine-troubleshooting a {color:var(--gold, #c9a66d);text-decoration:underline;text-underline-offset:3px}.engine-troubleshooting strong{letter-spacing:.1em}.engine-troubleshooting #engine-error-detail{color:#e6b7a1;overflow-wrap:anywhere}