*,:before,:after{box-sizing:border-box}body{color:#e2e2e2;-webkit-font-smoothing:antialiased;background:#0f1117;margin:0;font-family:system-ui,Segoe UI,sans-serif}#root{flex-direction:column;min-height:100svh;display:flex}.site-intro{color:#b9b9b9;max-width:46rem;margin:0 auto;padding:2.5rem 1.25rem 4rem;line-height:1.65}.site-intro h2{color:#e2e2e2;margin:0 0 1rem;font-size:1.35rem}.site-intro h3{color:#e2e2e2;margin:2rem 0 .75rem;font-size:1.05rem}.site-intro ul{margin:0;padding-left:1.1rem}.site-intro li{margin-bottom:.6rem}.site-intro a{color:gold}.app{color:#e2e2e2;min-height:100svh;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);background:#0f1117;align-items:stretch;display:flex}.sidebar{flex:0 0 var(--sidebar-w,170px);width:var(--sidebar-w,170px);border-right:1px solid #1c212c;flex-direction:column;gap:18px;max-height:100svh;padding:20px 12px 16px;display:flex;overflow-y:auto}.brand{flex-direction:column;gap:6px;display:flex}.brand h1{color:gold;white-space:nowrap;flex-shrink:0;margin:0;font-family:Noto Serif SC,STSong,SimSun,serif;font-size:2.4rem;line-height:1}.subtitle{color:#888;letter-spacing:.04em;font-size:.95rem}.sidebar .subtitle{font-size:.78rem;line-height:1.35}.nav-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:8px;display:flex}.sidebar .nav-actions{flex-flow:column;align-items:stretch;gap:6px}.sidebar .nav-actions>*{text-align:left;justify-content:flex-start;gap:9px;width:100%;max-width:none;padding:0 12px}.sidebar .nav-actions>.btn-icon{font-size:.85rem}.sidebar .nav-actions .btn-glyph{text-align:center;flex-shrink:0;width:1.2rem;font-size:1.15rem}.sidebar .nav-actions .btn-account .btn-glyph{margin-right:9px;display:inline-block}.sidebar .nav-actions .btn-label{display:inline}.ai-level,.btn-ai-toggle,.btn-reset,.btn-account,.analyze-btn{white-space:nowrap;cursor:pointer;border-radius:5px;flex-shrink:0;justify-content:center;align-items:center;height:36px;padding:0 14px;font-size:.85rem;transition:background .15s,border-color .15s;display:inline-flex}.btn-icon{padding:0 11px;font-size:1.15rem}.btn-label{display:none}.ai-level,.btn-ai-toggle{color:#7ab8cc;background:#1a2430;border:1px solid #2a4a5a}.btn-ai-toggle:hover{background:#223040}.btn-ai-toggle.active{color:#5df;background:#0a3a5a;border-color:#5df}.btn-reset{color:#ffe066;background:#7a3010;border:none}.btn-reset:hover:not(:disabled){background:#9a4010}.btn-reset:disabled{opacity:.45;cursor:not-allowed}.stage{--board-h:calc(100svh - 32px);flex-direction:column;flex:auto;align-items:center;min-width:0;padding:16px 0;display:flex}.status-strip{flex-shrink:0;min-height:42px;margin-bottom:12px}.panel-column{width:360px;max-height:var(--board-h,none);flex-direction:column;flex-shrink:0;align-self:stretch;min-height:0;display:flex}.panel-column .panel{flex:auto;min-height:0}.banner{border-radius:5px;padding:10px 32px;font-size:1rem;font-weight:600}.banner.checkmate{color:#fff;background:#7a0000}.banner.ai-thinking{color:#5df;background:#0a3a5a}.main{--panel-slot:384px;flex-wrap:wrap;justify-content:center;align-items:center;gap:24px;width:100%;min-height:0;padding:0 24px;display:flex}.board{width:min(100% - var(--panel-slot), calc(var(--board-h,92vh) * 624 / 688));touch-action:manipulation;border-radius:6px;flex-shrink:0;max-width:min(100%,92vw);height:auto;box-shadow:0 6px 24px #00000080}.panel{background:#181c25;border-radius:8px;flex-direction:column;flex-shrink:0;gap:14px;padding:20px;display:flex;overflow-y:auto;box-shadow:0 4px 20px #0006}.panel-title{color:gold;margin:0;font-size:1.1rem;font-weight:600}.turn-row{align-items:center;gap:10px;display:flex}.turn-badge{border-radius:20px;padding:3px 12px;font-size:.85rem;font-weight:600}.turn-badge.red{color:#ffe066;background:#c20}.turn-badge.black{color:#ddd;background:#2a2a2a}.check-label{color:#fff;background:#8b6000;border-radius:10px;padding:2px 10px;font-size:.8rem;font-weight:600}.coach-feed{background:#101820;border:1px solid #2a4a5a;border-radius:5px;max-height:200px;margin-bottom:10px;padding:10px 14px;font-size:.88rem;line-height:1.5;overflow-y:auto}.coach-entry{color:#9fd6e8;margin:6px 0}.takeback-btn{color:#ffe066;cursor:pointer;background:#7a3010;border:none;border-radius:4px;margin-left:8px;padding:2px 10px;font-size:.8rem}.takeback-btn:hover{background:#9a4010}.analysis-box{white-space:pre-wrap;word-break:break-word;color:#cdd;background:#0d1117;border-radius:5px;min-height:180px;max-height:380px;padding:14px;font-size:.88rem;line-height:1.65;overflow-y:auto}.placeholder{color:#555;margin:0;font-style:italic}.cursor{color:gold;animation:.8s step-end infinite blink;display:inline-block}@keyframes blink{50%{opacity:0}}.input-row{gap:8px;display:flex}.button-row{flex-wrap:wrap;gap:8px;display:flex}.question-input{color:#e2e2e2;background:#0d1117;border:1px solid #2c2c3a;border-radius:5px;flex:1;padding:8px 12px;font-size:.85rem}.question-input:focus{border-color:gold;outline:none}.question-input:disabled{opacity:.5}.analyze-btn{color:#ffe066;background:#7a3010;border:none}.analyze-btn:hover:not(:disabled){background:#9a4010}.analyze-btn:disabled{opacity:.5;cursor:not-allowed}.history{flex-direction:column;gap:6px;display:flex}.history-title{color:#666;text-transform:uppercase;letter-spacing:.08em;margin:0;font-size:.78rem}.move-list{flex-wrap:wrap;gap:4px;display:flex}.move-chip{border-radius:3px;padding:2px 8px;font-family:monospace;font-size:.78rem}.move-chip.red{color:#ffe066;background:#3a1500}.move-chip.black{color:#aaa;background:#1a1a1a}@keyframes piece-fade{to{opacity:0}}.piece-fading{pointer-events:none;animation:.35s forwards piece-fade}@keyframes check-pulse{50%{stroke-opacity:.2}}.check-pulse{animation:1s ease-in-out infinite check-pulse}.site-footer{color:#5c616d;flex-wrap:wrap;align-items:baseline;gap:6px 14px;width:100%;max-width:1100px;margin-top:auto;padding:24px 32px 20px;font-size:.8rem;display:flex}.sidebar .site-footer{flex-direction:column;gap:5px;padding:8px 0 0;font-size:.72rem}.sidebar .site-footer .sep{display:none}.sidebar .site-footer .copyright{margin-top:6px}.site-footer a{color:#7a808d;text-decoration:none}.site-footer a:hover{color:gold}.site-footer .sep{color:#333842}.btn-account{color:#7ab8cc;text-overflow:ellipsis;background:0 0;border:1px solid #2a4a5a;max-width:160px;padding:0 14px;line-height:34px;display:inline-block;overflow:hidden}.btn-account:hover{background:#1a2430}.modal-backdrop{z-index:50;background:#000000a6;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal{background:#161a23;border:1px solid #2a3340;border-radius:10px;flex-direction:column;gap:10px;width:100%;max-width:440px;max-height:90vh;padding:24px;display:flex;position:relative;overflow-y:auto}.reset-card{max-width:420px;margin:40px auto}.app.reset-page{flex-direction:column;align-items:center}.reset-page .brand{flex-direction:row;align-items:baseline;gap:16px;padding:20px 32px}.modal-close{color:#6b7280;cursor:pointer;background:0 0;border:none;padding:4px 8px;font-size:1.5rem;line-height:1;position:absolute;top:10px;right:12px}.modal-close:hover{color:#e2e2e2}.modal-title{color:gold;margin:0;font-size:1.25rem}.modal-sub{color:#8b8f9a;margin:0;font-size:.88rem}.modal-sub.small{font-size:.8rem}.review-move{flex-wrap:wrap;align-items:center;gap:8px;margin:0 0 8px;display:flex}.review-verdict{letter-spacing:.04em;text-transform:uppercase;font-size:.78rem;font-weight:600}.review-verdict.bad{color:#ff8a6b}.review-verdict.good{color:#7fd18a}.review-verdict.plain{color:#6b7280}.move-list button.move-chip{cursor:pointer;font:inherit;border:1px solid #0000}.move-list button.move-chip.current{border-color:gold}.eval-graph{cursor:pointer;background:#0d1117;border-radius:5px;margin-top:10px}.eval-graph svg{width:100%;height:auto;display:block}.eval-area{fill:#ffd70024}.eval-level{stroke:#343c4a;stroke-width:1px}.eval-line{fill:none;stroke:gold;stroke-width:2px;stroke-linejoin:round;stroke-linecap:round}.eval-cursor{stroke:#ffffff4d;stroke-width:1px}.eval-dot{fill:gold;stroke:#0d1117;stroke-width:2px}.eval-side{fill:#6b7280;letter-spacing:.06em;font-size:8px}.setting{flex-direction:column;gap:6px;margin-top:10px;display:flex}.setting-label{color:#e2e2e2;font-size:.92rem;font-weight:600}.setting-hint{color:#8b8f9a;margin:0;font-size:.8rem;line-height:1.45}.setting .ai-level{width:100%;height:38px}.auth-form{flex-direction:column;gap:10px;margin-top:6px;display:flex}.auth-input{color:#e2e2e2;background:#0f1117;border:1px solid #2a3340;border-radius:5px;padding:10px 12px;font-size:.92rem}.auth-input:focus{border-color:#7ab8cc;outline:none}.btn-primary{color:#fff;cursor:pointer;background:#b8500f;border:none;border-radius:5px;padding:10px 16px;font-size:.92rem}.btn-primary:hover:not(:disabled){background:#9a4010}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{color:#7ab8cc;cursor:pointer;background:#1a2430;border:1px solid #2a4a5a;border-radius:5px;padding:8px 14px;font-size:.85rem}.btn-secondary:hover:not(:disabled){background:#21303f}.btn-secondary:disabled{opacity:.5;cursor:not-allowed}.modal-actions{gap:8px;margin-top:6px;display:flex}.auth-links{flex-direction:column;align-items:flex-start;gap:4px;display:flex}.link-btn{color:#7ab8cc;cursor:pointer;text-align:left;background:0 0;border:none;padding:2px 0;font-size:.82rem}.link-btn:hover{text-decoration:underline}.msg{color:#8fbf8f;margin:0;font-size:.85rem}.msg.error{color:#e08585}.msg a{color:#7ab8cc;word-break:break-all}.record-title{color:#666;text-transform:uppercase;letter-spacing:.08em;margin:8px 0 0;font-size:.78rem}.record{border-collapse:collapse;width:100%;font-size:.85rem}.record th{text-align:left;color:#6b7280;border-bottom:1px solid #2a3340;padding:4px 6px;font-size:.75rem;font-weight:500}.record td{color:#c8ccd4;border-bottom:1px solid #1e242e;padding:5px 6px}.record td:first-child{color:#7ab8cc}@media (width>=1201px){.panel{align-self:stretch}.panel .coach-feed{flex:1 1 0;min-height:120px;max-height:none}.panel .analysis-box{flex:2 1 0;max-height:none}.panel .history{flex:1 1 0;min-height:96px;overflow-y:auto}.panel .history>*{flex:none}}@media (width<=1200px){.app{flex-direction:column;align-items:center}.sidebar{display:contents}.brand{order:0}.nav-actions{order:1}.clocks{order:2}.stage{order:3}.brand{flex-direction:row;align-items:baseline;gap:16px;padding:20px 32px 0}.sidebar .subtitle{font-size:.95rem}.sidebar .nav-actions{flex-flow:wrap;justify-content:center;align-items:center;gap:8px;width:100%;max-width:1100px;padding:12px 32px}.sidebar .nav-actions>*{text-align:center;justify-content:center;width:auto}.sidebar .nav-actions>.btn-account{max-width:160px}.sidebar .nav-actions>.btn-icon{padding:0 11px;font-size:1.15rem}.sidebar .nav-actions .btn-label,.sidebar .nav-actions>:not(.btn-icon) .btn-glyph{display:none}.sidebar .site-footer{flex-direction:row;order:4;justify-content:center;gap:6px 14px;padding:24px 32px 20px;font-size:.8rem}.sidebar .site-footer .sep{display:inline}.stage{padding:0}.main{--panel-slot:0px;align-items:flex-start;padding:0 24px 48px}.board{width:624px}.panel-column{width:100%;max-width:min(624px,92vw);max-height:none}}@media (width<=640px){.brand{flex-direction:column;align-items:center;gap:4px;padding:16px 16px 0}.brand h1{font-size:1.9rem}.sidebar .nav-actions{padding:12px 16px}.subtitle{display:none}.main{gap:16px;padding:0 12px 32px}.sidebar .site-footer{padding:20px 16px}}@media (width<=420px){.brand{padding:12px 8px 0}.sidebar .nav-actions{padding:10px 8px}.main{padding:0 6px 24px}.panel{padding:14px}.status-strip{min-height:34px}.banner{padding:8px 16px;font-size:.92rem}}@media (pointer:coarse){.ai-level,.btn-ai-toggle,.btn-reset,.btn-account,.analyze-btn{height:44px;padding:0 16px}.takeback-btn{min-height:36px;padding:6px 14px}.move-list button.move-chip{min-height:34px}.modal-close{width:44px;height:44px}}.clock-slot{display:contents}.clock-slot.hidden{display:none}.clocks{gap:10px;margin-bottom:12px;display:flex}@media (width>=1201px){.sidebar .clocks{flex-direction:column;gap:6px;margin-bottom:0}.sidebar .clock{justify-content:space-between;width:100%}}.clock{color:#8b8f9a;font-variant-numeric:tabular-nums;background:#181c25;border:1px solid #2a3040;border-radius:5px;align-items:center;gap:6px;height:36px;padding:0 14px;font-size:.95rem;font-weight:600;display:inline-flex}.clock.red{color:#ffb08a}.clock.black{color:#9fb4c8}.clock.ticking{background:#241f16;border-color:gold}.clock.flagged{color:#fff;background:#7a0000;border-color:#7a0000}