:root{font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--ink);background:var(--page);font-synthesis:none;font-size:15px;color-scheme:light;--page: oklch(98.71% .02 123.72);--surface: #ffffff;--ink: #29331a;--muted: #5d6850;--primary: oklch(58.92% .199 134.6);--primary-ink: #0c1906;--primary-hover: oklch(65% .18 134.6);--link: #356911;--heading-accent: #526c16;--soft: #edf2d8;--soft-ink: #4c5b2f;--line: #d9e1c8;--line-strong: #b3c096;--nav: #f7fbe9f5;--focus: #426f14;--success: #3c6b26;--warning: #856014;--error-bg: #fbe8e5;--error-ink: #943428;--scrim: #17201580;--card-shadow: #17201508;--sheet-shadow: #17201530;--board-light: #ecebd8;--board-dark: #87a088;--board-selected: #cedd77;--board-hint: #334f3466;--board-last-move: #b5ad55;--hint-ring: #ffd429;--hint-outline: #111827;--board-light-notation: #45563b;--board-dark-notation: #172b1b}@media(prefers-color-scheme:dark){:root{color-scheme:dark;--page: #0f172a;--surface: #172236;--ink: #e2e8f0;--muted: #a6b4c8;--primary: #38bdf8;--primary-ink: #071a27;--primary-hover: #7dd3fc;--link: #7dd3fc;--heading-accent: #38bdf8;--soft: #1e293b;--soft-ink: #cbd5e1;--line: #334155;--line-strong: #52657e;--nav: #0f172af5;--focus: #a5b4fc;--success: #2dd4bf;--warning: #f4bf50;--error-bg: #452530;--error-ink: #fda4af;--scrim: #020617b3;--card-shadow: #02061740;--sheet-shadow: #02061780;--board-light: #a9b6c7;--board-dark: #536982;--board-selected: #7ab3bc;--board-hint: #10243999;--hint-ring: #ffd429;--hint-outline: #111827;--board-light-notation: #172236;--board-dark-notation: #ffffff}}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.6}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--focus);outline-offset:3px}a{color:inherit;text-decoration:none}.topbar{height:52px;max-width:1080px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:0 12px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:9px;font-size:20px;font-weight:750;letter-spacing:-1px}.brand-mark{display:block;width:27px;height:31px;object-fit:contain;flex-shrink:0}.beta{font-size:8px;letter-spacing:1px;font-weight:650;border:1px solid var(--line);padding:5px 6px;border-radius:4px;margin-left:5px}.avatar{border:1px solid var(--line);border-radius:50%;width:39px;height:39px;background:transparent;display:grid;place-items:center;color:var(--link)}main{max-width:1000px;margin:auto;padding:16px 16px max(20px,env(safe-area-inset-bottom))}.status{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--muted);min-height:22px;flex-wrap:wrap}.status-dot{width:6px;height:6px;background:var(--success);border-radius:50%}.status-dot.offline{background:var(--warning)}.status-detail{margin-left:auto;max-width:45%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted)}.intro{padding:32px 0 29px}.eyebrow{font-size:9px;font-weight:750;letter-spacing:1.8px;line-height:1.7;margin:0 0 12px;color:var(--muted)}h1{font-family:Georgia,Times New Roman,serif;font-weight:400;letter-spacing:-2.5px;font-size:58px;line-height:1.02;margin:0 0 19px}h1 em{font-weight:400;color:var(--heading-accent)}p{line-height:1.65}.intro>p:last-child{font-size:14px;line-height:1.65;color:var(--muted);margin:0}h2{font-family:Georgia,serif;font-size:26px;letter-spacing:-.6px;font-weight:400;margin:0 0 10px}h3{font-size:15px;margin:0 0 5px}.puzzle-card{background:var(--surface);padding:18px;border:1px solid var(--line);border-radius:19px;box-shadow:0 5px 15px var(--card-shadow)}.card-heading{display:flex;justify-content:space-between;align-items:center;gap:8px;margin:0 0 17px}.card-heading .eyebrow{font-size:8px;letter-spacing:1.3px}.card-heading h2{margin:5px 0 0;font-size:25px}.pill{font-size:10px;background:var(--soft);white-space:nowrap;padding:7px 10px;border-radius:20px;color:var(--soft-ink)}.board{width:100%;aspect-ratio:1;border-radius:7px;overflow:hidden;isolation:isolate}.board-caption{display:flex;align-items:center;gap:7px;font-size:11px;margin-top:16px}.board-caption>span:last-child{color:var(--muted);margin-left:auto;font-size:9px}.turn-dot{width:9px;height:9px;border:1px solid var(--line);border-radius:50%;background:#fff}.puzzle-feedback{font-size:12px;color:var(--muted);margin-top:11px;min-height:32px;line-height:1.5}.text-button{border:0;background:none;color:var(--link);padding:10px 0;font-size:12px;font-weight:650;display:inline-flex;align-items:center;gap:9px;min-height:44px}.training-layout{display:grid;gap:16px}.training-layout aside{grid-row:1;display:grid;gap:16px;margin-top:0}.connect-card{background:var(--soft);border:1px solid var(--line);border-radius:18px;padding:23px}.mini-icon{display:grid;place-items:center;color:var(--link);width:38px;height:38px;border:1px solid var(--line-strong);border-radius:11px;margin-bottom:19px}.connect-card p{font-size:13px;color:var(--soft-ink);margin:8px 0 22px}.primary,.secondary{display:flex;align-items:center;justify-content:center;gap:14px;min-height:48px;padding:13px 17px;border-radius:10px;border:1px solid transparent;width:100%;font-size:13px;font-weight:650;line-height:1.4}.primary{background:var(--primary);color:var(--primary-ink)}.primary:hover{background:var(--primary-hover)}.primary svg{margin-left:auto;width:18px}.secondary{background:transparent;color:var(--link);border-color:var(--line-strong)}.connect-card>small,.sheet>small{display:block;text-align:center;font-size:10px;line-height:1.6;color:var(--muted);margin-top:13px}.progress-card{padding:22px 24px;background:var(--surface);border:1px solid var(--line);border-radius:16px}.stats{display:grid;grid-template-columns:1fr 1fr;margin-top:14px}.stats>div+div{border-left:1px solid var(--line);padding-left:26px}.stats strong{font-family:Georgia,serif;font-weight:400;font-size:35px;display:block}.stats span{display:block;font-size:11px;color:var(--muted);margin-top:3px}.save-banner{margin-top:24px;padding:22px;border:1px dashed var(--line-strong);border-radius:15px;display:flex;gap:15px;flex-wrap:wrap}.save-banner>svg{margin-top:3px;flex-shrink:0}.save-banner>div{flex:1;min-width:220px}.save-banner h3{font-family:Georgia,serif;font-size:20px;font-weight:400}.save-banner p{font-size:12px;color:var(--muted);margin:6px 0 0}.page-footer{text-align:center;color:var(--muted);font-size:10px;letter-spacing:.3px;padding-top:36px;line-height:1.9}.page-footer span{display:block;color:var(--muted);font-size:9px}.header-nav{display:flex;align-items:center;gap:4px}.header-nav a{position:relative;display:flex;align-items:center;justify-content:center;gap:6px;min-width:44px;min-height:44px;border-radius:8px;color:var(--muted)}.account-sync-indicator{position:absolute;top:5px;right:5px;width:7px;height:7px;border-radius:50%;background:var(--warning);pointer-events:none}.header-nav a span{display:none}.header-nav a.active{color:var(--link);background:var(--soft)}.header-nav a.active svg{stroke-width:2.3}.compact{padding:33px 0}.panel{padding:23px;background:var(--surface);border:1px solid var(--line);border-radius:18px;margin-bottom:18px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.section-heading h2{font-size:23px;display:flex;align-items:center;gap:10px;margin:0}.count{font:12px ui-sans-serif;background:var(--soft);border-radius:50%;padding:4px 8px}.empty{text-align:center;padding:33px 0 20px;color:var(--muted)}.empty svg{margin:0 auto 12px}.empty h3{color:var(--link);font-size:18px;font-family:Georgia,serif;font-weight:400}.empty p{font-size:12px;margin-bottom:22px}.account-row,.history-row{display:flex;align-items:center;gap:12px;padding:18px 0;border-bottom:1px solid var(--line)}.account-row>div,.history-row>div{flex:1;min-width:0}.account-row strong,.history-row strong{font-size:14px;display:block;overflow-wrap:anywhere}.account-row div span,.history-row div span{display:block;font-size:10px;color:var(--muted);margin-top:5px}.account-row>svg{color:var(--success);width:18px}.platform-badge{width:39px;height:39px;background:var(--soft);border-radius:10px;display:grid;place-items:center;font-family:Georgia,serif;font-size:24px}.history-row>span:last-child{font-size:10px;color:var(--success)}.completion{background:var(--soft);color:var(--success);border-radius:50%;padding:7px;display:grid;place-items:center}.completion svg{width:17px;height:17px}.muted{color:var(--muted);font-size:13px}.footnote{font-size:11px;line-height:1.7;margin:18px 0 0}.scrim{position:fixed;inset:0;background:var(--scrim);backdrop-filter:blur(4px);z-index:5;display:flex;align-items:flex-end;justify-content:center;padding:12px}.sheet{position:relative;width:100%;max-width:440px;background:var(--surface);padding:30px 25px 25px;border-radius:24px;box-shadow:0 15px 50px var(--sheet-shadow);max-height:94dvh;overflow-y:auto}.sheet h2{font-size:31px;line-height:1.15;padding-right:10px}.close{position:absolute;top:12px;right:12px;min-width:38px;height:38px;border:0;border-radius:50%;background:var(--soft);font-size:26px;color:var(--muted)}.sheet label{display:block;font-size:12px;font-weight:600;margin:18px 0}.sheet input,.sheet select{display:block;width:100%;min-height:49px;background:var(--surface);border:1px solid var(--line-strong);border-radius:9px;padding:12px;margin-top:7px;color:var(--ink);font-size:16px}.sheet form{margin-top:20px}.notice{background:var(--soft);border-radius:10px;padding:12px;font-size:12px;line-height:1.6}.error{background:var(--error-bg);color:var(--error-ink)}.error-text{color:var(--error-ink);font-size:12px}.dev-label{font-size:11px;border-top:1px solid var(--line);padding-top:20px;color:var(--muted)}.provider{margin-top:22px}@media(min-width:700px){.topbar{height:52px;padding:0 40px}main{padding:20px 40px max(20px,env(safe-area-inset-bottom))}.intro{padding:38px 0 36px}h1{font-size:76px;letter-spacing:-3.5px}.intro>p:last-child{font-size:15px}.training-layout{display:grid;grid-template-columns:minmax(320px,1.3fr) minmax(230px,.85fr);gap:25px}.training-layout aside{grid-row:auto;margin:0;align-content:start;gap:22px}.puzzle-card{padding:24px}.card-heading h2{font-size:29px}.card-heading .eyebrow{font-size:9px}.connect-card{padding:27px}.save-banner{align-items:center}.save-banner .secondary{width:auto}.header-nav a{padding:0 10px}.header-nav a span{display:inline;font-size:12px}.scrim{align-items:center}}@media(prefers-reduced-motion:no-preference){button,a{transition:background .15s,color .15s}.sheet{animation:appear .18s ease-out}@keyframes appear{0%{transform:translateY(12px);opacity:0}to{transform:translateY(0);opacity:1}}}@media(max-width:360px){h1{font-size:51px}.beta{display:none}.puzzle-card{padding:13px}.card-heading h2{font-size:23px}.save-banner>div{min-width:180px}}.import-button{flex-shrink:0}.game-list{display:grid}.game-row{width:100%;padding:18px 0;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--ink);text-align:left;overflow-wrap:anywhere}.game-row strong{display:block;font-size:14px}.game-row>span{display:block;color:var(--muted);font-size:11px;margin-top:7px}.game-row strong span{font-weight:400;color:var(--muted)}.game-row:hover{background:var(--soft)}.replay-panel h2{overflow-wrap:anywhere}.replay-caption{display:flex;justify-content:space-between;gap:12px;margin:16px 0;font-size:13px}.replay-caption span{color:var(--muted)}.replay-controls{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.replay-controls button{font-size:20px;padding:8px}.move-list{display:grid;grid-template-columns:1fr 1fr;gap:4px;max-height:300px;overflow-y:auto;padding:4px;background:var(--soft);border-radius:10px}.move-list button{background:transparent;color:var(--ink);border:0;border-radius:6px;min-height:44px;text-align:left;padding:8px 12px}.move-list .selected-move{background:var(--primary);color:var(--primary-ink)}@media(min-width:700px){.replay-layout{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:24px}.move-list{max-height:410px}}.local-data-report{font-size:12px;line-height:1.6;margin-top:16px}.local-origin{overflow-wrap:anywhere}.local-data-report summary{cursor:pointer;min-height:44px;padding:12px 0;color:var(--link)}.local-data-report pre{white-space:pre-wrap;overflow-wrap:anywhere;max-height:260px;overflow-y:auto;background:var(--soft);padding:12px;border-radius:8px}.account-row>.import-actions{flex:0 1 auto;display:flex;flex-wrap:wrap;gap:0 10px;justify-content:flex-end}.account-row{flex-wrap:wrap}@media(max-width:480px){.account-row>.import-actions{flex-basis:100%;justify-content:flex-start}}.engine-analysis{padding:1rem;margin-bottom:1rem;border:1px solid var(--line);border-radius:12px}.engine-toggle{display:flex;align-items:center;gap:.6rem;font-weight:600;min-height:44px;cursor:pointer}.engine-toggle input{width:1.25rem;height:1.25rem;accent-color:var(--primary)}.engine-line{overflow-wrap:anywhere;line-height:1.6}.practice-topbar{height:48px;padding:0 16px}.practice-topbar .brand{font-size:21px}.practice-topbar .brand-mark{width:27px;height:31px}.practice-topbar .beta{display:none}.practice-page{padding:8px 12px max(16px,env(safe-area-inset-bottom));max-width:1120px}.practice-page>.status{font-size:10px}.practice-page-title{padding:14px 0}.practice-page-title h1{font-family:inherit;font-size:26px;font-weight:650;letter-spacing:-.6px;margin:0}.practice-playing{padding-inline:8px}.practice-playing>.status .status-detail{display:none}.practice-breadcrumb{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:32px;font-size:12px;color:var(--muted)}.practice-breadcrumb a{color:var(--link)}.practice-workspace{display:grid;grid-template-areas:"heading" "board" "controls";gap:10px}.practice-heading{grid-area:heading;min-width:0}.practice-heading h1{font-family:inherit;font-size:20px;font-weight:650;letter-spacing:-.5px;margin:0 0 4px;line-height:1.2}.practice-heading p{display:flex;justify-content:space-between;gap:8px;margin:0;font-size:12px;line-height:1.4;color:var(--muted)}.practice-board{grid-area:board;border-radius:4px;width:100%}.practice-controls{grid-area:controls;min-width:0}.practice-feedback{border-radius:8px;background:var(--soft);padding:10px 12px;margin-bottom:10px}.practice-feedback p{margin:0;font-size:14px;line-height:1.4}.practice-feedback.incorrect{background:var(--error-bg);color:var(--error-ink);border-left:4px solid var(--error-ink)}.practice-feedback.correct{border-left:4px solid var(--success)}.practice-feedback.checking{border-left:4px solid var(--link)}.practice-feedback [role=alert]{margin-top:8px}.practice-actions{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.practice-actions button,.practice-actions a{min-height:44px;margin:0;padding:10px 14px;width:auto;font-size:13px}.practice-details{font-size:12px;margin-top:12px;color:var(--muted)}.practice-details summary{cursor:pointer;padding-block:8px}.practice-details p{margin:8px 0}.practice-queue-start,.practice-pagination{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:14px 0;font-size:13px}.practice-pagination button{width:auto}.practice-page .game-row{padding:12px}.practice-playing>.status{display:none}.practice-board{max-width:min(100%,var(--practice-board-limit, calc(100svh - 340px) ));justify-self:center}.analysis-lines{margin:14px 0;display:grid;gap:8px}.analysis-lines .move-list{border-left:2px solid var(--line);padding-left:8px}.practice-save-status{min-height:1.4em;margin:6px 0 0;font-size:12px;line-height:1.4}.engine-control{position:relative;display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:48px;padding:0 12px;margin-bottom:10px;border:1px solid var(--line);border-radius:8px;background:var(--soft);overflow:hidden}.engine-switch{display:inline-flex;align-items:center;gap:9px;min-height:44px;cursor:pointer;font-size:14px;font-weight:600}.engine-switch input{position:absolute;z-index:1;opacity:0;width:40px;height:24px;margin:0}.engine-switch-track{width:38px;height:22px;border-radius:20px;background:var(--muted);border:1px solid var(--line)}.engine-switch-track:after{content:"";display:block;width:16px;height:16px;margin:2px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #0006}.engine-switch input:checked+.engine-switch-track{background:#28734f}.engine-switch input:checked+.engine-switch-track:after{transform:translate(16px)}.engine-switch input:focus-visible+.engine-switch-track{outline:3px solid var(--link);outline-offset:3px}.engine-activity{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--muted)}.engine-activity-dot{width:6px;height:6px;border-radius:50%;background:currentColor}.engine-control[data-working=true] .engine-activity{color:var(--link)}.engine-control-progress{position:absolute;left:0;bottom:0;height:2px;width:100%}.engine-control[data-working=true] .engine-control-progress{background:linear-gradient(90deg,transparent,var(--link),transparent);animation:engine-working 1.4s linear infinite}@keyframes engine-working{0%{transform:translate(-100%)}to{transform:translate(100%)}}@media(prefers-reduced-motion:reduce){.engine-control[data-working=true] .engine-control-progress{animation:none;background:var(--link)}}.practice-controls>.engine-control{position:sticky;top:0;z-index:2}.settings-page{max-width:620px;padding-top:24px}.settings-page>.status{display:none}.settings-heading{margin-bottom:24px}.settings-heading h1{font-family:inherit;font-size:26px;line-height:1.2;margin:0;letter-spacing:-.5px}.settings-page .panel{padding:20px 0;margin:0;border:0;border-top:1px solid var(--line);border-radius:0;background:none}.settings-page h2{font-family:inherit;font-size:17px;line-height:1.4;margin:0 0 6px;overflow-wrap:anywhere}.settings-page .muted{font-size:14px;line-height:1.5;margin:0 0 16px}.settings-actions{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.settings-page button,.settings-page .primary{width:auto;margin:0;min-height:44px;font-size:14px}.settings-diagnostics{margin-top:24px;font-size:14px}.settings-diagnostics>summary{cursor:pointer;color:var(--muted);padding:10px 0}.settings-diagnostics>button{margin-top:8px}.settings-page .local-data-report{margin-top:16px}.library-page{max-width:760px}.library-heading{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin:8px 0 24px}.library-heading h1{font-weight:700;line-height:1.2;font-family:inherit;font-size:28px;margin:0;letter-spacing:-.7px}.library-heading>span,.library-context{color:var(--muted);font-size:13px}.library-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:0}.library-metrics>div{display:flex;flex-direction:column-reverse;gap:6px}.library-metrics dt{font-size:12px;color:var(--muted)}.library-metrics dd{margin:0;font-size:32px;font-weight:700;line-height:1.2;font-variant-numeric:tabular-nums}.library-context{line-height:1.5;margin:16px 0 24px}.library-page h2{font-family:inherit;font-size:18px;letter-spacing:0}.library-overview .section-heading{gap:12px;margin-top:30px}.library-overview select{max-width:55%;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink);padding:10px;font-size:13px}.result-totals{display:flex;gap:24px;padding:8px 0 16px;color:var(--muted)}.result-totals strong{color:var(--ink)}.results-table{width:100%;border-collapse:collapse;font-size:14px;font-variant-numeric:tabular-nums}.results-table th,.results-table td{padding:12px 0;border-bottom:1px solid var(--line);text-align:right}.results-table th:first-child{text-align:left}.results-table thead{color:var(--muted);font-size:12px}.results-table th{font-weight:500}.library-page>.panel{border:0;border-top:1px solid var(--line);border-radius:0;background:transparent;box-shadow:none;padding:22px 0;margin:0}.library-page .game-row{padding:12px 0}.game-pagination{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:14px}.game-pagination span{color:var(--muted);font-size:12px}.library-accounts .account-row{padding:14px 0}.library-accounts .account-row div span{font-size:12px}.library-accounts .empty{text-align:left;padding:8px 0}.library-accounts .empty>svg,.library-accounts .empty h3{display:none}@media(max-width:420px){.library-heading h1{font-size:25px}.library-heading>span{font-size:12px}.library-metrics dd{font-size:28px}}.history-import{flex-basis:100%}.history-import p{color:var(--muted);font-size:13px;line-height:1.5;margin:8px 0 0}.library-heading select{font-size:12px;padding:8px}.library-accounts .account-row{display:grid;grid-template-columns:40px minmax(0,1fr);align-items:center;gap:8px 12px;padding:20px 0}.library-accounts .account-row .platform-badge{width:40px;height:40px}.library-accounts .account-row>.account-imports{grid-column:2;min-width:0}.account-imports .import-coverage{margin:0 0 12px;color:var(--muted);font-size:12px}.account-import-actions{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px}.account-import-actions .secondary{width:auto;padding:10px 14px;font-size:13px;min-height:42px}.import-options{position:relative;font-size:13px}.import-options summary{cursor:pointer;color:var(--muted);padding:10px 0}.import-options>div{display:flex;flex-direction:column;align-items:flex-start}.import-feedback{font-size:13px;line-height:1.5;margin:10px 0 0;color:var(--muted)}.import-feedback:empty{display:none}@media(max-width:420px){.library-accounts .account-row>.account-imports{grid-column:1 / -1}}.account-import-actions>.text-button{min-height:42px}.import-options[open]{flex-basis:100%}.import-options>div{flex-direction:row;flex-wrap:wrap;gap:14px}.onboarding-progress progress{width:100%;height:12px;accent-color:var(--primary);margin:12px 0}.onboarding-progress h2{font-family:inherit;font-size:22px}.scrim{bottom:auto;height:100dvh}.sheet{max-height:100%;overscroll-behavior:contain}.account-sheet{padding:18px 18px 14px}.account-sheet h2{font-size:24px;padding-right:38px;margin:0 0 10px}.account-sheet>.muted{font-size:13px;margin:0}.account-sheet form{margin-top:12px}.account-sheet label{margin:10px 0}.account-sheet input,.account-sheet select{min-height:44px;padding:9px;margin-top:4px}.account-sheet form>button{position:sticky;bottom:0;width:100%}.promotion-picker{position:fixed;inset:0;margin:auto;width:min(360px,calc(100vw - 24px));max-height:calc(100dvh - 24px);box-sizing:border-box;overflow:auto;padding:18px;border:1px solid var(--line-strong);border-radius:16px;background:var(--surface);color:var(--ink);box-shadow:0 12px 48px #0008}.promotion-picker::backdrop{background:var(--scrim)}.promotion-picker h2{margin:0 0 14px;font-size:20px}.promotion-choices{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-bottom:14px}.promotion-choices button{display:grid;justify-items:center;padding:8px 2px;background:var(--board-light);color:var(--board-light-notation);border:1px solid var(--line-strong);border-radius:8px}.promotion-piece{display:block;width:52px;height:52px;max-width:100%}.promotion-choices small{font-size:12px}.promotion-picker button:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.practice-question{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr) minmax(0,1fr);align-items:baseline;gap:8px;white-space:nowrap}.practice-question h1{flex:none;margin:0;font-size:11px;letter-spacing:0}.practice-game-context{display:flex;justify-content:center;min-width:0;font-size:11px}.practice-game-title{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.practice-game-meta{display:flex;justify-content:flex-end;gap:6px;font-size:10px;color:var(--muted);font-variant-numeric:tabular-nums}.practice-question:has(.practice-game-meta>span+span){grid-template-columns:auto minmax(0,1fr) auto}.analysis-explorer .practice-breadcrumb{margin:0 0 6px;max-width:none;min-height:24px}.analysis-explorer .practice-breadcrumb span{overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.analysis-explorer .practice-workspace{gap:10px}.analysis-explorer .practice-board{max-width:min(100%,calc(100svh - 230px));align-self:center}.analysis-explorer .practice-controls{grid-area:controls;display:flex;flex-direction:column;gap:6px;max-height:none;overflow:visible;padding:0;min-height:0}.analysis-explorer .analysis-navigation{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;margin:0}.analysis-navigation button{min-height:40px;padding:0;font-size:22px}.analysis-explorer .engine-analysis-compact{padding:0;margin:0;border:0;border-radius:0;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:start;gap:8px}.engine-analysis-compact .engine-control{border:0;padding:6px 0;margin:0;min-height:32px;background:none}.engine-analysis-compact .engine-activity{display:none}.engine-analysis-compact>[role=status]{padding-top:7px;min-width:0;font-size:12px}.engine-analysis-compact .engine-depth{color:var(--muted);font-size:11px}.engine-analysis-compact .engine-line{margin:4px 0;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-height:0}.engine-info{position:relative;font-size:12px}.engine-info summary{cursor:pointer;list-style:none;padding:8px}.engine-info>div{position:absolute;right:0;z-index:5;width:220px;padding:12px;background:var(--surface);border:1px solid var(--line);border-radius:8px}.engine-info .footnote{display:block;margin:8px 0 0;padding:0}.analysis-explorer .analysis-lines{display:block;min-height:0;max-height:32svh;overflow-y:auto;overscroll-behavior:contain;margin:0;background:var(--soft);border-radius:6px}.analysis-explorer .move-list{display:flex;flex-wrap:wrap;gap:0;border:0;border-radius:0;border-bottom:1px solid var(--line);padding:6px;max-height:none;overflow:visible}.analysis-explorer .move-list h2{font-family:inherit;flex-basis:100%;margin:0 0 2px;font-size:11px;color:var(--muted);font-weight:500}.analysis-explorer .move-list button{padding:5px 6px;min-height:36px;font-size:14px;border-radius:4px}.analysis-move-number{color:var(--muted);margin-right:4px;font-size:11px}.analysis-explorer .move-list button[aria-pressed=true]{background:var(--primary);color:var(--primary-ink)}.analysis-explorer .move-list button[aria-pressed=true] .analysis-move-number{color:inherit}@media(min-width:640px),(min-width:600px)and (max-height:500px){body:has(.personal-practice){--chess-sidebar-size: clamp(200px, 25vw, 320px);--chess-board-size: min( calc(100svh - 76px) , calc(100vw - var(--chess-sidebar-size) - 40px));--chess-page-size: calc(var(--chess-board-size) + var(--chess-sidebar-size) + 40px)}body:has(.personal-practice) .topbar,.practice-playing:has(.personal-practice){max-width:var(--chess-page-size)}.personal-practice .practice-workspace{display:grid;grid-template-areas:"board heading" "board controls";grid-template-columns:var(--chess-board-size) var(--chess-sidebar-size);grid-template-rows:32px minmax(0,1fr);gap:10px 24px;align-items:start;justify-content:center}.personal-practice .practice-board{max-width:none;width:100%}.personal-practice .practice-heading{min-width:0;padding-top:4px}.personal-practice .practice-controls{min-height:0;max-height:calc(var(--chess-board-size) - 42px);overflow:auto;padding-bottom:8px}.analysis-explorer .practice-controls{height:calc(var(--chess-board-size) - 42px)}.analysis-explorer .analysis-lines{flex:1;max-height:none}}.engine-analysis-compact .engine-switch{min-height:32px;font-size:12px}.puzzle-actions{gap:8px;padding-inline:1px}.puzzle-actions.solving .puzzle-reveal,.puzzle-actions.retrying .puzzle-skip{margin-left:auto}.puzzle-actions .puzzle-next{margin-left:auto;order:2}.puzzle-actions .puzzle-analyse{order:1}.puzzle-actions .text-button{min-height:44px;padding-inline:8px}.library-progress{margin-bottom:24px}.library-progress .library-heading .primary{white-space:nowrap;width:auto;flex:none}.library-progress .library-heading{align-items:center}.library-progress .library-heading h1{white-space:nowrap;font-size:24px}.library-sync-status{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding:16px 0;border-block:1px solid var(--line);font-size:14px}.analysis-progress{margin-top:24px}.progress-rows{margin:12px 0}.progress-rows>div{display:flex;justify-content:space-between;gap:16px;padding:7px 0}.progress-rows dt{color:var(--muted)}.progress-rows dd{margin:0;font-weight:700;font-variant-numeric:tabular-nums}.library-details{border-top:1px solid var(--line);padding:18px 0}.library-details>summary{cursor:pointer;font-weight:600}.library-details[open]>summary{margin-bottom:20px}.sync-attention{color:var(--warning);border-left:3px solid currentColor;padding:8px 12px;background:color-mix(in srgb,var(--warning) 9%,transparent);border-radius:4px}.sync-heading{display:block;margin-top:18px}.account-email{color:var(--muted);overflow-wrap:anywhere}.library-filters{display:flex;flex-wrap:wrap;gap:4px;margin:0 0 20px}.library-filters button{width:auto;min-height:44px;padding:8px 12px;border:1px solid transparent;border-radius:8px;background:transparent;color:var(--muted);font:inherit;font-size:13px}.library-filters button[aria-pressed=true]{color:var(--link);background:var(--surface);border-color:var(--line-strong)}.library-overview .section-heading{flex-wrap:wrap}.library-overview .section-heading .library-filters{margin:0}.version-info{padding:1rem 0;color:var(--muted);font-size:.8rem}.version-info dl{margin:0}.version-info dl>div{display:flex;flex-wrap:wrap;gap:.25rem 1rem;justify-content:space-between;margin:.4rem 0}.version-info dd{margin:0;overflow-wrap:anywhere;min-width:0}.version-info p{margin:.6rem 0}.update-recovery{position:fixed;inset:0;z-index:10000;display:grid;place-items:center;padding:1rem;background:var(--page)}.update-recovery section{max-width:30rem;padding:1.2rem}.settings-page .settings-heading{margin-bottom:12px}.settings-page .settings-account:first-of-type{border-top:0;padding-top:8px}.account-save-status{margin:8px 0 12px;color:var(--muted);font-size:14px;line-height:1.5}.settings-page .account-email{margin:4px 0;color:var(--ink)}.settings-page .section-heading{flex-wrap:wrap;gap:4px 12px}.settings-page .section-heading h2{margin:0}.settings-page .profile-intro{margin:4px 0 0}.settings-page .empty{padding:12px 0;text-align:left}.settings-page .empty p{margin:0 0 12px}.settings-page .account-row{padding:16px 0}.settings-page .account-row strong{overflow-wrap:anywhere}.settings-page .account-import-actions{gap:4px 12px}.settings-page .account-import-actions button{min-height:44px}.settings-page .import-feedback{display:block;min-height:1.5em;margin-top:4px}.settings-page .import-options{flex-basis:100%}.settings-page summary{min-height:44px;padding:12px 0;cursor:pointer}.settings-page summary:focus-visible{outline:3px solid var(--focus);outline-offset:3px}.account-tools{border-top:1px solid var(--line);color:var(--muted);font-size:14px}.account-tools>.panel{border-top:0;padding-top:8px}.account-tools .version-info{padding-top:0}.account-save-status.sync-attention{color:var(--warning)}.settings-page .account-row:last-child{border-bottom:0;padding-bottom:0}.settings-page{max-width:680px}.settings-page .account-identity{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:24px}.account-identity-copy{min-width:0}.account-identity-copy .account-save-status{margin-bottom:0}.settings-page .account-identity>.primary{flex:none;width:auto}.settings-page .library-accounts{padding-top:16px;padding-bottom:12px}.settings-page .library-accounts .account-row{grid-template-columns:36px minmax(0,1fr);gap:2px 12px;padding:18px 0 12px}.settings-page .account-row .platform-badge{width:36px;height:36px;align-self:start}.settings-page .account-row>div:not(.account-imports){display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 10px}.settings-page .account-row div span{margin:0}.settings-page .account-imports{grid-column:2}.settings-page .account-imports .import-coverage{margin:2px 0 8px}.settings-page .account-import-actions{position:relative;gap:4px 12px}.settings-page .import-stop{order:3}.settings-page .import-stop:disabled{display:none}.settings-page .import-feedback{min-height:0}.settings-page .import-feedback:empty{display:none}.profile-repairs{border-top:1px solid var(--line);margin-top:16px;padding-top:16px}.profile-repair{margin:12px 0}.profile-repair-actions{display:flex;flex-wrap:wrap;gap:8px 20px}.profile-repair p{margin:4px 0}@media(max-width:540px){.settings-page .account-identity{align-items:flex-start;flex-direction:column;gap:12px}.settings-page .account-identity>.primary{align-self:flex-start}.settings-page .account-imports{grid-column:1 / -1}}@media(max-width:540px){.settings-page .account-identity{flex-direction:row;align-items:center;flex-wrap:wrap}.settings-page .account-identity>.primary{align-self:center}}.library-metrics dd{font-variant-numeric:tabular-nums}.analysis-explorer .analysis-board-with-eval{display:grid;grid-template-columns:28px minmax(0,1fr);gap:4px;aspect-ratio:auto}.analysis-board-squares{min-width:0}.evaluation-bar{position:relative;display:flex;flex-direction:column-reverse;background:#262626;border:1px solid #7b8595;overflow:hidden;border-radius:3px}.evaluation-bar.black-bottom{flex-direction:column}.evaluation-white{background:#f5f5f5;width:100%}.evaluation-score{position:absolute;top:50%;left:0;width:100%;transform:translateY(-50%);text-align:center;background:#e8edf5;color:#182234;font-size:10px;font-variant-numeric:tabular-nums;padding:3px 0}.move-comparison{border-top:1px solid var(--line)}.comparison-caption{font-size:12px;color:var(--muted);margin:8px 0 4px}.comparison-row{padding:4px 0;border-bottom:1px solid var(--line)}.comparison-choice,.comparison-material{display:flex;justify-content:space-between;align-items:center;gap:8px;width:100%;min-height:44px;padding:4px 6px;text-align:left;background:transparent;color:var(--ink)}.comparison-choice{font-size:13px}.comparison-choice small,.comparison-material small{color:var(--muted);font-size:11px}.comparison-material{font-size:14px}.comparison-moves{display:flex;flex-wrap:wrap;gap:2px}.comparison-moves button{flex:0 0 auto;min-height:44px;padding:4px 6px;font-size:12px;background:transparent;color:var(--link)}.comparison-choice,.comparison-material,.comparison-moves button{appearance:none;border:0;border-radius:4px;font-family:inherit;cursor:pointer}.comparison-choice:hover,.comparison-material:hover,.comparison-moves button:hover{background:var(--soft)}.comparison-choice:focus-visible,.comparison-material:focus-visible,.comparison-moves button:focus-visible{outline:2px solid var(--focus);outline-offset:-2px}.evaluation-bar.evaluation-unknown{background:var(--line)}.evaluation-unknown .evaluation-white{visibility:hidden}.analysis-explorer .practice-controls>*{flex-shrink:0}.analysis-explorer .analysis-lines{flex:none;max-height:none;overflow:visible}.capture-summary{display:grid;gap:6px}.capture-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.capture-pieces{display:inline-flex;flex-wrap:wrap;gap:2px}.material-piece{display:inline-block;width:30px;height:30px}.material-piece svg{display:block;width:100%;height:100%}.comparison-choice,.comparison-material{flex-wrap:wrap}.comparison-material small{font-size:12px}@media(min-width:640px),(min-width:600px)and (max-height:500px){body:has(.analysis-explorer){--chess-sidebar-size: clamp(280px, 32vw, 380px)}.analysis-explorer .practice-controls{overflow-y:auto;overflow-x:hidden}}.capture-pieces{background:#b7c2cf;border-radius:3px;padding:1px 3px}.capture-summary{display:flex;flex-wrap:wrap;gap:6px 16px}.capture-row{gap:5px}.capture-row>span:first-child{font-size:12px;color:var(--muted)}.comparison-moves button{color:var(--ink)}.comparison-moves button[aria-pressed=true],.comparison-moves button[aria-pressed=true]:hover{background:var(--primary);color:var(--primary-ink);font-weight:700}.variation-outcome{flex-basis:100%;min-width:0}.endpoint-evaluation{display:flex;flex-wrap:wrap;align-items:center;gap:5px}.endpoint-evaluation small{color:var(--muted)}.analysis-explorer .move-list .comparison-material{min-height:44px;padding:4px 6px}.continuation-label{flex-basis:100%;font-size:11px;color:var(--muted);padding:4px 6px 0}.engine-continuation{flex-basis:100%;border-top:1px dashed var(--line);margin-top:4px}
