.training-main{padding-top:32px;padding-bottom:42px}.training-intro{margin-bottom:25px}.training-intro h1{font-size:clamp(28px,3vw,38px)}.training-intro>p:last-child{color:var(--muted);margin:12px 0 0;font-size:13px}.training-layout{display:grid;grid-template-columns:270px minmax(0,1fr);gap:24px;align-items:start}.training-library{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 0 16px}.training-library-title{padding:0 18px 16px;border-bottom:1px solid var(--line)}#training-progress{display:block;font-size:11px;color:var(--muted);margin-top:6px}.training-lessons{display:flex;flex-direction:column;padding:8px}.training-lessons button{display:flex;align-items:center;gap:12px;padding:14px 10px;border:1px solid transparent;background:transparent;border-radius:8px;text-align:left;color:var(--ink);font-size:12px}.training-lessons button:hover{background:var(--paper)}.training-lessons button[aria-pressed=true]{border-color:#bdd1bf;background:#edf4e9}.training-lessons small{display:block;font-size:10px;font-weight:400;color:var(--muted);margin-top:3px}.training-piece-pair{display:flex;align-items:center;justify-content:center;flex-shrink:0;width:34px;height:34px;border-radius:8px;background:#f2f1e8;color:var(--green);font:600 14px Georgia,serif;letter-spacing:1px}.lesson-mark{margin-left:auto;color:var(--green);font-weight:700}.training-session-note{padding:0 18px;color:var(--muted);font-size:10px;margin:6px 0 14px}.training-back{display:block;padding:12px 18px 0;border-top:1px solid var(--line);font-size:11px}.training-play{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 26px}.training-play-heading{display:flex;justify-content:space-between;align-items:center;gap:10px}.training-play h2{font-size:21px;letter-spacing:-.03em;margin:3px 0 0;line-height:1.3}.training-count{font-size:11px;white-space:nowrap;color:var(--muted)}.training-count strong{font-size:19px;color:var(--ink);font-weight:550;margin-right:3px}#training-status{font-size:12px;color:var(--muted);margin:13px 0 16px;min-height:20px}#training-status[data-outcome=mate]{color:var(--green);font-weight:650}#training-status[data-outcome=stalemate],#training-status[data-outcome=draw],#training-status[data-outcome=error]{color:#975133}#training-board{width:100%;max-width:520px;margin:0 auto;touch-action:manipulation}#training-board [data-square]{position:relative}#training-board [data-square].training-selected{box-shadow:inset 0 0 0 4px #277454}#training-board .training-legal:after{content:'';position:absolute;z-index:2;width:22%;height:22%;border-radius:50%;background:#224f48a8;left:39%;top:39%;pointer-events:none}#training-board [data-square].training-hinted{box-shadow:inset 0 0 0 4px #277454}#training-board [data-square]:focus-visible{outline:3px solid #175539;outline-offset:-3px;z-index:3}.training-board-hint{font-size:10px;color:var(--muted);text-align:center;margin:9px 0 16px}.training-actions{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.training-actions button,#training-retry{background:#fff;border:1px solid var(--line);border-radius:7px;padding:10px 6px;color:var(--green);font-size:11px;min-height:42px}.training-actions button:last-child{background:var(--green);color:#fff;border-color:var(--green)}.training-actions button:disabled{opacity:.4}.training-hint-text{font-size:12px;color:var(--green);min-height:0;margin:8px 0}.training-hint-text:empty{display:none}.training-guide{border-top:1px solid var(--line);margin-top:18px;padding-top:14px;font-size:12px}.training-guide summary{font-weight:600;color:var(--green);cursor:pointer}.training-guide p{margin:10px 0;color:var(--muted)}.training-guide .training-rule-note{font-size:11px}.training-mobile-picker{display:none}#training-retry[hidden]{display:none}
@media(max-width:850px){.training-layout{grid-template-columns:220px minmax(0,1fr);gap:16px}.training-play{padding:18px}.training-lessons button{gap:8px;padding:13px 6px;font-size:11px}.training-piece-pair{width:28px;height:30px;font-size:12px}.training-actions{grid-template-columns:1fr 1fr}}
@media(max-width:760px){.training-layout{grid-template-columns:1fr;gap:14px}.training-main{padding-top:23px}.training-intro{margin-bottom:18px}.training-intro>p:last-child{font-size:12px}.training-library{padding:12px 14px;display:grid;grid-template-columns:1fr auto;column-gap:10px;align-items:center}.training-library-title{padding:0;border:0;grid-column:2;grid-row:1/3}.training-library-title>.panel-label{display:none}#training-progress{margin:0;font-size:10px}.training-mobile-picker{display:block}label.training-mobile-picker{font-size:10px;color:var(--muted);margin-bottom:4px}select.training-mobile-picker{max-width:100%;width:100%;font-family:inherit;font-size:12px;font-weight:600;background:var(--paper);color:var(--ink);border:1px solid var(--line);padding:8px;border-radius:6px;grid-column:1}.training-lessons,.training-session-note,.training-back{display:none}.training-play{padding:16px 12px}.training-play h2{font-size:19px}#training-status{margin:10px 0 12px}.training-board-hint{margin-bottom:12px}.training-actions{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px}.training-actions button{font-size:10px}.training-guide{margin-top:14px}.training-count{font-size:10px}}
@media(max-width:360px){.training-actions{grid-template-columns:1fr 1fr}.training-play h2{font-size:17px}}

/* Fixed-size board children must not set a grid track minimum on phones. */
.training-library,.training-play,.training-play-heading>div{min-width:0}
@media(max-width:760px){.training-layout{grid-template-columns:minmax(0,1fr)}.training-library{grid-template-columns:minmax(0,1fr) auto}}

@media(max-width:760px){.training-main{padding-top:17px}.training-intro{margin-bottom:14px}.training-intro .eyebrow{font-size:9px;margin-bottom:6px}.training-intro h1{font-size:27px}.training-intro>p:last-child{margin-top:8px;font-size:11px;line-height:1.5}.training-library{padding:9px 12px}#training-status{margin:8px 0 10px}.training-actions button{white-space:nowrap}}

.training-play-tools{display:flex;align-items:center;gap:14px;flex-shrink:0}#training-sound{border:1px solid var(--line);background:var(--paper);color:var(--green);border-radius:6px;padding:6px 9px;font-size:10px;white-space:nowrap;min-height:32px}#training-sound[aria-pressed=false]{color:var(--muted);background:#fff}
@media(max-width:760px){.training-play-tools{flex-direction:column-reverse;align-items:flex-end;gap:3px}#training-sound{min-height:28px;padding:4px 7px;font-size:9px}}