:root{color:#e5e8dd;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;--accent:#bbd89b;--muted:#8f9b91;--panel:#1e2722;--line:#354038;--serif:Georgia, "Times New Roman", serif;background:#141b18;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{min-width:320px;margin:0}button,input,select,textarea{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit;background:0 0;border:0;transition:background .16s,color .16s,opacity .16s}button:disabled{opacity:.35;cursor:default}button:not(:disabled):hover{color:#f7faef}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:4px}a{color:inherit;text-decoration:none}button svg{flex-shrink:0}button{touch-action:manipulation}.site-header{border-bottom:1px solid #2b352e;justify-content:space-between;align-items:center;max-width:1400px;height:88px;margin:auto;padding:0 56px;display:flex}.brand{letter-spacing:-.8px;align-items:center;gap:12px;font-size:25px;font-weight:700;display:flex}.brand-light{font-weight:400}.brand-mark{width:38px;height:42px;color:var(--accent)}.knight{width:100%;height:100%}.knight.small{width:27px;height:27px}.top-tabs{gap:30px;height:100%;margin-left:58px;display:flex}.top-tabs button{color:var(--muted);border-bottom:2px solid #0000;align-items:center;gap:8px;padding:0 6px;font-size:13px;display:flex}.top-tabs .selected{color:var(--accent);border-bottom-color:var(--accent)}.header-right{align-items:center;gap:23px;display:flex}.local-label{color:#a9b4a7;align-items:center;gap:8px;font-size:11px;display:flex}.live-dot{background:var(--accent);border-radius:50%;width:6px;height:6px;box-shadow:0 0 0 4px #bbd89b0b}.icon-button{width:34px;height:34px;color:var(--muted);border-radius:6px;justify-content:center;align-items:center;display:inline-flex}.icon-button:not(:disabled):hover{background:#ffffff0b}.main-layout{grid-template-columns:minmax(0,600px) minmax(290px,350px);align-items:start;column-gap:42px;max-width:1088px;margin:auto;padding:42px 32px 18px;display:grid}.intro{grid-column:1/-1;justify-content:space-between;align-items:center;margin-bottom:27px;display:flex}.eyebrow{letter-spacing:1.8px;color:#a0ad9e;margin:0;font-size:9px;font-weight:600}h1{font-family:var(--serif);letter-spacing:-1.4px;color:#edf0e2;margin:9px 0 0;font-size:43px;font-weight:400;line-height:1.1}.intro h1{margin:0}.new-game-button{background:var(--accent);color:#24301f;border-radius:6px;justify-content:center;align-items:center;gap:8px;height:41px;padding:0 18px;font-size:12px;font-weight:650;display:flex}.new-game-button:not(:disabled):hover,.primary-button:hover{color:#1b2517;background:#c9e5ae}.board-column{min-width:0}.player-strip{align-items:center;gap:11px;height:67px;display:flex}.board-column>.player-strip:first-child{height:53px;padding-bottom:12px}.avatar{width:36px;height:36px;color:var(--accent);background:#293526;border:1px solid #536449;border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;display:flex}.avatar.human{background:#29302c;border-color:#465048}.color-disc{border-radius:50%;width:18px;height:18px;display:inline-block;box-shadow:0 2px 3px #0005}.color-disc.white{background:#eae9d9;border:1px solid #fff9}.color-disc.black{background:#151916;border:1px solid #657064}.player-name{flex-direction:column;gap:5px;display:flex}.player-name strong{font-size:12px;font-weight:550}.player-name>span{color:var(--muted);font-size:10px}.player-indicator{letter-spacing:1.2px;color:#738174;margin-left:auto;font-size:8px}.active-player .player-indicator{color:var(--accent)}.thinking-chip{color:var(--accent);align-items:center;gap:6px;margin-left:auto;font-size:10px;display:flex}.board-shell{aspect-ratio:1;border-radius:3px;width:100%;overflow:hidden;box-shadow:0 18px 38px #0003,0 0 0 1px #ffffff05}.cg-wrap{width:100%;height:100%}.cg-wrap cg-board{background-color:#e5e3cc;background-image:conic-gradient(#789174 25%, #e5e3cc 0 50%, #789174 0 75%, #e5e3cc 0);background-size:25% 25%}.cg-wrap square.last-move{background-color:#dbea5680}.cg-wrap square.selected{background-color:#f3f38599}.cg-wrap square.move-dest{background:radial-gradient(#233c3860 19%,#0000 22%)}.cg-wrap square.oc.move-dest{background:radial-gradient(#0000 0% 80%,#233c3866 80%)}.cg-wrap square.check{background:radial-gradient(#e04444 0%,#e0444477 45%,#0000 75%)}.cg-wrap piece{filter:drop-shadow(0 2px 1px #0003)}.cg-wrap coords{font-size:10px;font-weight:650}.cg-wrap coords.files{text-align:right;height:14px;padding-right:3px;bottom:1px}.cg-wrap coords.ranks{text-align:left;top:3px;left:3px}.cg-wrap coords.files coord:nth-child(odd),.cg-wrap coords.ranks coord:nth-child(2n){color:#526c51}.cg-wrap coords.files coord:nth-child(2n),.cg-wrap coords.ranks coord:nth-child(odd){color:#f0efd9}.board-toolbar{border-top:1px solid #2e3930;justify-content:space-between;align-items:center;gap:8px;padding-top:9px;display:flex}.status-line{color:#aebaa8;align-items:center;gap:8px;min-width:0;font-size:11px;display:flex}.status-dot{background:#9ab886;border-radius:50%;flex-shrink:0;width:5px;height:5px}.board-actions{gap:3px;display:flex}.move-input{color:var(--muted);align-items:center;gap:10px;margin-top:16px;font-size:10px;display:flex}.move-input input{color:#dce5d4;background:#1b231e;border:1px solid #354037;border-radius:5px;width:118px;padding:8px 10px;font-size:11px}.move-input button{color:var(--accent);padding:6px;display:flex}.side-column{flex-direction:column;gap:18px;display:flex}.panel{background:var(--panel);border:1px solid #303d32;border-radius:10px;overflow:hidden}.setup-panel{padding:22px 22px 0}.section-heading{justify-content:space-between;align-items:center;gap:8px;display:flex}.strength-switch{margin-top:18px}.segmented{background:#151e18;border:1px solid #2b372c;border-radius:6px;gap:4px;padding:4px;display:flex}.segmented button{color:#a6b19e;border-radius:4px;flex:1;justify-content:center;align-items:center;gap:5px;min-width:0;padding:9px 3px;font-size:10px;display:flex}.segmented .chosen{color:#d4e6c3;background:#354731;box-shadow:0 1px 4px #0002}.field-label{justify-content:space-between;align-items:center;margin:24px 0 12px;display:flex}.field-label label,.time-heading label{color:#b6c1b0;font-size:11px}.field-label strong{font-variant-numeric:tabular-nums;color:var(--accent);font-size:21px;font-weight:450}.field-label small{letter-spacing:1px;color:#91a085;font-size:8px}input[type=range]{appearance:none;width:100%;height:4px;accent-color:var(--accent);cursor:pointer;background:#465840;border-radius:5px;margin:8px 0 13px}input[type=range]::-webkit-slider-thumb{appearance:none;background:var(--accent);border:3px solid #e0eccf;border-radius:50%;width:13px;height:13px;box-shadow:0 0 0 4px #bbd89b10}input[type=range]::-moz-range-thumb{background:var(--accent);border:2px solid #e0eccf;border-radius:50%;width:10px;height:10px}.range-labels{color:#869680;justify-content:space-between;font-size:8px;display:flex}.elo-presets{gap:5px;margin-top:13px;display:flex}.elo-presets button{color:#83917d;border:1px solid #34422f;border-radius:4px;flex:1;padding:5px 0;font-size:9px}.elo-presets .chosen{color:var(--accent);background:#2c3a28;border-color:#647657}.time-heading{justify-content:space-between;align-items:center;margin:23px 0 12px;display:flex}.time-heading span{color:#91a085;font-size:10px}.time-switch{padding:3px}.time-switch button{font-variant-numeric:tabular-nums;padding:8px 3px}.move-now{text-align:left;width:100%;color:var(--accent);align-items:center;gap:7px;margin-top:14px;padding:8px 0;font-size:10px;display:flex}.advanced-toggle{color:#b1bdaa;border-top:1px solid #354331;align-items:center;gap:8px;width:100%;margin-top:9px;padding:15px 0;font-size:10px;display:flex}.advanced-toggle svg:last-child{margin-left:auto;transition:transform .2s}.rotate{transform:rotate(90deg)}.analysis-mode-note{margin:0 0 15px}.advanced-fields{padding-bottom:12px}.advanced-fields>label{color:#b6c1b0;justify-content:space-between;align-items:center;gap:10px;margin-bottom:10px;font-size:10px;display:flex}.advanced-fields input,.advanced-fields select{color:#dce5d3;background:#151e18;border:1px solid #43503b;border-radius:4px;width:98px;padding:7px;font-size:11px}.hint{color:#97a48e;margin:8px 0;font-size:10px;line-height:1.7}.full-engine-note{color:var(--accent);align-items:center;gap:10px;margin-top:15px;display:flex}.full-engine-note p{font-size:10px;line-height:1.8}.full-engine-note span{color:var(--muted)}.history-panel>.section-heading{border-bottom:1px solid #303b31;padding:18px 20px 15px}.move-count{color:#82917b;font-size:9px}.move-list{scrollbar-width:thin;scrollbar-color:#4b5c43 transparent;min-height:72px;max-height:182px;overflow-y:auto}.empty-moves{min-height:72px;color:var(--muted);justify-content:center;align-items:center;display:flex}.empty-moves p{margin:0;font-size:12px}.history-grid{grid-template-columns:1fr 1fr;margin:0;padding:7px 12px;list-style:none;display:grid}.history-grid li{min-width:0}.history-grid .white-move{grid-column:1}.history-grid .black-move{grid-column:2}.history-grid button{text-align:left;border-radius:3px;gap:16px;width:100%;padding:9px 10px;font-size:12px;display:flex}.history-grid button span{color:#829076;min-width:20px;font-size:9px}.current-move button{color:var(--accent);background:#33442d}.history-controls{border-top:1px solid #303b31;justify-content:center;align-items:center;gap:4px;padding:5px;display:flex}.history-controls>span{color:#87967e;font-variant-numeric:tabular-nums;padding:0 14px;font-size:9px}.import-export{border-top:1px solid #303b31;align-items:center;gap:15px;padding:11px 15px;display:flex}.import-export button{color:#a4b397;align-items:center;gap:5px;padding:3px 0;font-size:10px;display:flex}.import-export button:nth-child(2){margin-left:auto}.analysis-result{border-bottom:1px solid #34402e;padding:16px 18px}.analysis-result>div{align-items:center;gap:12px;display:flex}.evaluation{color:var(--accent);font-variant-numeric:tabular-nums;font-size:25px}.analysis-depth{color:#93a389;font-size:9px}.pv-line{color:#b6c3ab;overflow-wrap:anywhere;margin:10px 0 0;font-size:11px;line-height:1.8}footer{color:#6f7e66;border-top:1px solid #2c362c;justify-content:space-between;gap:12px;max-width:1024px;margin:30px auto 0;padding:20px 0 28px;font-size:9px;display:flex}footer a{color:#9ead92}.error-banner{color:#f0b7a5;background:#4d2f252e;border:1px solid #7c504566;border-radius:5px;margin-top:12px;padding:12px;font-size:11px;line-height:1.7}.error-banner button{margin:6px 10px 0 0;text-decoration:underline;display:inline-block}.loading-note{color:#b7cba4;align-items:center;gap:8px;margin-top:10px;font-size:10px;display:flex}.toast{z-index:50;color:#22301b;text-align:center;background:#d5e9bd;border-radius:8px;max-width:min(90vw,520px);padding:13px 22px;font-size:12px;position:fixed;bottom:24px;left:50%;transform:translate(-50%);box-shadow:0 8px 30px #0006}dialog{color:#e4ecda;background:#202b23;border:1px solid #495940;border-radius:14px;width:min(480px,100% - 32px);max-height:85dvh;padding:26px;overflow-y:auto;box-shadow:0 28px 90px #0009}dialog::backdrop{-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#08100ac9}.modal-title{justify-content:space-between;align-items:center;gap:10px;display:flex}.modal-title h2{font-family:var(--serif);letter-spacing:-.6px;margin:0;font-size:29px;font-weight:400}.modal-copy{color:#a9b89d;margin:15px 0 21px;font-size:12px;line-height:1.8}.side-picker,.promotion-picker{gap:10px;margin:20px 0;display:flex}.side-picker button,.promotion-picker button{color:#b2c0a5;border:1px solid #47543e;border-radius:8px;flex-direction:column;flex:1;align-items:center;gap:8px;padding:15px 8px;font-size:12px;display:flex}.side-picker .chosen{color:#e0efce;background:#37482d;border-color:#a6c38a}.side-picker span,.promotion-picker span{font-size:34px;font-family:var(--serif)}.primary-button{background:var(--accent);color:#23311a;border-radius:6px;justify-content:center;align-items:center;gap:12px;width:100%;padding:13px;font-size:13px;font-weight:600;display:flex}textarea{color:#c9dbb8;resize:vertical;background:#141d16;border:1px solid #4b5c40;border-radius:6px;width:100%;margin-bottom:15px;padding:12px;font-size:12px;line-height:1.8}.error-text{color:#efac99;font-size:11px;line-height:1.6}.modal-export{gap:20px;margin-top:18px;display:flex}.modal-export button{color:#a5b695;align-items:center;gap:5px;font-size:10px;display:flex}.help-copy p{color:#b0c09f;font-size:12px;line-height:1.85}.help-copy strong{color:#dce9cd}.spin{animation:1.2s linear infinite spin}.pulse{animation:1s ease-in-out infinite alternate pulse}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{to{opacity:.3}}@media (width>=1400px){.main-layout{padding-top:47px}}@media (width>=741px) and (height<=950px){.site-header{height:64px}.main-layout{grid-template-columns:minmax(340px,min(600px,100svh - 290px)) minmax(290px,330px);justify-content:center;padding-top:24px}.intro{margin-bottom:18px}h1{font-size:36px}}@media (width<=1000px){.site-header{padding:0 28px}.main-layout{grid-template-columns:minmax(0,1fr) 300px;column-gap:25px;padding:30px 24px 12px}.setup-panel{padding:18px 17px 0}footer{margin-left:24px;margin-right:24px}}@media (width<=740px){.site-header{height:68px;padding:0 18px}.brand{gap:7px;font-size:22px}.brand-mark{width:29px;height:34px}.top-tabs{gap:14px;margin:0}.top-tabs button{gap:5px;padding:0 3px;font-size:11px}.local-label{display:none}.header-right{gap:0}.help{width:27px}.main-layout{flex-direction:column;max-width:590px;padding:27px 16px 12px;display:flex}.intro{gap:10px;width:100%;margin-bottom:21px}h1{font-size:34px}.new-game-button{height:36px;padding:0 12px;font-size:10px}.board-column{width:100%}.player-name strong{font-size:12px}.player-name>span,.status-line{font-size:10px}.board-actions{gap:0}.board-actions .icon-button{width:30px}.move-input{margin-top:10px}.move-input input,.advanced-fields input,.advanced-fields select,textarea{font-size:16px}.side-column{width:100%;margin-top:26px}.setup-panel{padding:22px 22px 0}.eyebrow{font-size:9px}.segmented button{padding:10px 4px;font-size:12px}.elo-presets button{padding:8px 0;font-size:11px}.move-now,.advanced-toggle{min-height:42px;font-size:11px}.field-label label,.time-heading label{font-size:12px}.range-labels{font-size:9px}.import-export button{min-height:32px;font-size:12px}.history-controls .icon-button{width:42px;height:40px}footer{max-width:558px;margin:20px auto 0;padding:20px 16px 28px;font-size:8px}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.001ms!important;animation-duration:.001ms!important}}.password-page{place-items:center;min-height:100svh;padding:24px;display:grid}.password-form{flex-direction:column;gap:16px;width:100%;max-width:360px;display:flex}.password-brand{color:#b7c5b9;font-size:14px}.password-form h1{margin:0 0 16px;font-size:30px}.password-form label{font-size:14px}.password-form input{color:#e8eee5;background:#17201b;border:1px solid #526257;border-radius:8px;width:100%;min-height:48px;padding:12px;font-size:16px}.password-form input:focus-visible{outline-offset:2px;outline:2px solid #bad990}.password-form button{color:#17201b;background:#c5e59f;border-radius:8px;min-height:48px;font-weight:600}.password-form button:disabled{opacity:.45;cursor:not-allowed}.password-form p{margin:0;font-size:14px}.gate-error{color:#ffb3a8}.gate-loading{padding:32px}.captcha{min-height:65px}