:root{color-scheme:light;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;--color-page: #f6f8fb;--color-surface: #ffffff;--color-text: #1b2430;--color-muted: #526070;--color-primary: #1c7c74;--color-primary-strong: #125d58;--color-accent: #d95f35;--color-border: #dbe3eb;--shadow-panel: 0 18px 45px rgba(28, 38, 52, .12)}*{box-sizing:border-box}html{min-height:100%}body{min-width:320px;min-height:100vh;margin:0;color:var(--color-text);background:radial-gradient(circle at top left,rgba(28,124,116,.13),transparent 30rem),var(--color-page)}a{color:inherit}button,input,select,textarea{font:inherit}button,select{cursor:pointer}#app{min-height:100vh}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.app-layout{width:min(100% - 32px,960px);min-height:100vh;margin:0 auto;padding:24px 0 48px}.app-header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:10px 0 32px}.app-brand,.app-nav__link,.game-card{text-decoration:none}.app-brand{display:inline-flex;align-items:center;gap:10px;font-weight:900}.app-brand__mark{width:34px;height:34px;display:grid;place-items:center;border-radius:50%;color:#fff;background:var(--color-accent)}.app-nav{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}.app-nav__link{min-height:40px;display:inline-flex;align-items:center;padding:0 12px;border:1px solid transparent;border-radius:999px;color:var(--color-muted);font-weight:700}.app-nav__link:hover,.app-nav__link:focus-visible{color:var(--color-primary-strong);border-color:#1c7c7459;outline:3px solid rgba(28,124,116,.15);outline-offset:2px}.app-main{display:grid;place-items:center}.home-view,.placeholder-view{width:100%;padding:32px;border:1px solid var(--color-border);border-radius:8px;background:var(--color-surface);box-shadow:var(--shadow-panel)}.eyebrow{margin:0 0 10px;color:var(--color-primary-strong);font-size:.82rem;font-weight:800;text-transform:uppercase}h1{margin:0;font-size:clamp(2.2rem,7vw,4.5rem);line-height:1}.lede{max-width:58ch;margin:18px 0 0;color:var(--color-muted);font-size:1.15rem;line-height:1.6}.home-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:20px;margin-top:32px;align-items:stretch}.player-panel{min-width:0;padding:22px;border:1px solid var(--color-border);border-radius:8px;background:#fbfcfe}.player-panel--empty{max-width:560px;margin-top:32px}.player-panel h2{margin:0;font-size:1.55rem;line-height:1.15}.panel-copy{margin:12px 0 0;color:var(--color-muted);line-height:1.55}.field-label{display:block;margin:0 0 8px;font-size:.9rem;font-weight:800}.player-form,.player-switcher{margin-top:20px}.player-form__row{display:flex;gap:10px}.text-input,.player-select{width:100%;min-height:46px;border:1px solid var(--color-border);border-radius:8px;color:var(--color-text);background:#fff}.text-input{min-width:0;padding:0 12px}.player-select{padding:0 38px 0 12px}.text-input:focus,.player-select:focus{border-color:var(--color-primary);outline:3px solid rgba(28,124,116,.18)}.button{min-height:46px;display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;border-radius:8px;padding:0 18px;font-weight:800}.button--primary{color:#fff;background:var(--color-primary)}.button--primary:hover,.button--primary:focus-visible{background:var(--color-primary-strong);outline:3px solid rgba(28,124,116,.2);outline-offset:2px}.form-feedback{min-height:1.35em;margin:8px 0 0;color:var(--color-accent);font-size:.9rem;font-weight:700}.mental-game-root,.mental-game{width:100%}.mental-game{padding:32px;border:1px solid var(--color-border);border-radius:8px;background:var(--color-surface);box-shadow:var(--shadow-panel)}.game-progress{display:inline-flex;min-height:34px;align-items:center;margin:24px 0 0;padding:0 12px;border-radius:999px;color:var(--color-primary-strong);background:#1c7c741f;font-weight:800}.operation-card{min-height:150px;display:grid;place-items:center;margin-top:22px;border:1px solid rgba(217,95,53,.3);border-radius:8px;color:var(--color-text);background:#fff7f2;font-size:clamp(2.4rem,9vw,5.5rem);font-weight:900}.answer-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;margin-top:22px}.answer-input{width:100%;min-height:54px;border:1px solid var(--color-border);border-radius:8px;padding:0 14px;color:var(--color-text);background:#fff;font-size:1.3rem;font-weight:800}.answer-input:focus{border-color:var(--color-primary);outline:3px solid rgba(28,124,116,.18)}.game-feedback{min-height:1.5em;margin:14px 0 0;color:var(--color-muted);font-size:1rem;font-weight:800}.game-feedback--correct{color:var(--color-primary-strong)}.game-feedback--wrong{color:var(--color-accent)}.button--secondary{margin-top:12px;color:var(--color-primary-strong);border-color:#1c7c7447;background:#eef8f6}.button--secondary:hover,.button--secondary:focus-visible{border-color:var(--color-primary);outline:3px solid rgba(28,124,116,.16);outline-offset:2px}.bv-prompt{margin:24px 0 0;color:var(--color-text);font-size:1.25rem;font-weight:800;line-height:1.45}.option-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:22px}.option-button{min-height:86px;border:1px solid var(--color-border);border-radius:8px;padding:14px;color:var(--color-text);background:#fbfcfe;font-size:1.45rem;font-weight:900}.option-button:hover,.option-button:focus-visible{border-color:var(--color-primary);outline:3px solid rgba(28,124,116,.18);outline-offset:2px}.option-button--correct,.option-button--correct:disabled{color:var(--color-primary-strong);border-color:#1c7c7473;background:#eef8f6}.option-button--wrong,.option-button--wrong:disabled{color:#9f3f22;border-color:#d95f3573;background:#fff0e9}.summary-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:24px}.summary-stat{min-height:96px;display:grid;align-content:center;gap:6px;padding:16px;border:1px solid var(--color-border);border-radius:8px;background:#fbfcfe}.summary-stat strong,.summary-stat span{display:block}.summary-stat strong{font-size:2rem}.summary-stat span{color:var(--color-muted);font-weight:800}.failed-list{margin-top:24px}.failed-list h2{margin:0;font-size:1.25rem}.failed-list ul{margin:12px 0 0;padding-left:20px;color:var(--color-muted);line-height:1.6}.progress-panel{margin-top:28px;padding-top:22px;border-top:1px solid var(--color-border)}.progress-panel h2,.recent-history h3{margin:0;font-size:1.2rem}.progress-stat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:14px}.progress-stat{min-height:82px;display:grid;align-content:center;gap:4px;padding:14px;border:1px solid var(--color-border);border-radius:8px;background:#fbfcfe}.progress-stat strong,.progress-stat span{display:block}.progress-stat strong{font-size:1.6rem}.progress-stat span{color:var(--color-muted);font-size:.9rem;font-weight:800}.recent-history{margin-top:18px}.word-history{margin-top:14px}.recent-history ol{margin:10px 0 0;padding-left:20px;color:var(--color-muted);line-height:1.6}.game-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:32px}.home-grid .game-grid{margin-top:0}.game-card{min-height:112px;display:flex;align-items:center;gap:16px;padding:18px;border:1px solid var(--color-border);border-radius:8px;text-decoration:none;background:#fbfcfe}.game-card:hover,.game-card:focus-visible{border-color:var(--color-primary);outline:3px solid rgba(28,124,116,.18);outline-offset:2px}.game-card__icon{width:52px;height:52px;flex:0 0 52px;display:grid;place-items:center;border-radius:50%;color:#fff;background:var(--color-accent);font-weight:900}.game-card__title,.game-card__description{display:block}.game-card__title{font-size:1.05rem}.game-card__description{margin-top:6px;color:var(--color-muted);line-height:1.4}@media(max-width:680px){.app-layout{width:min(100% - 24px,960px);padding:24px 0}.app-header{align-items:flex-start;flex-direction:column}.app-nav{justify-content:flex-start}.home-view,.placeholder-view{padding:22px}.home-grid,.game-grid{grid-template-columns:1fr}.player-form__row{flex-direction:column}.answer-row,.summary-grid,.progress-stat-grid,.option-grid{grid-template-columns:1fr}}