:root{--color-bg: #fbf7ef;--color-surface: #ffffff;--color-text: #3a332b;--color-muted: #6f675a;--color-primary: #e8955b;--color-primary-strong: #d97b3c;--color-accent: #8fae86;--color-grid: #d8cfc0;--color-grid-strong: #9a8f7c;--color-selected: #f6dcc2;--color-peer: #f3ede1;--color-given: #3a332b;--color-user: #d97b3c;--radius: 14px;--tap: 44px}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%}body{background:var(--color-bg);color:var(--color-text);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}.app-shell{max-width:480px;margin:0 auto;min-height:100%;padding:16px 12px calc(16px + env(safe-area-inset-bottom));display:flex;flex-direction:column}.cat{font-size:44px;line-height:1;text-align:center}.cat-line{text-align:center;color:var(--color-muted);margin:8px 0 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.btn{margin:8px 0}.spacer{flex:1 1 auto}.board-wrap{width:100%;display:flex;justify-content:center}.board{width:min(96vw,420px);aspect-ratio:1 / 1;display:grid;grid-template-columns:repeat(9,1fr);grid-template-rows:repeat(9,1fr);background:var(--color-grid-strong);border:4px solid var(--color-grid-strong);border-radius:8px;overflow:hidden;gap:1px}.cell{background:var(--color-surface);display:flex;align-items:center;justify-content:center;font-size:clamp(16px,5.4vw,26px);font-weight:600;color:var(--color-user);border:none;cursor:pointer;padding:0;-webkit-user-select:none;user-select:none;position:relative}.cell.given{color:var(--color-given);font-weight:700;cursor:default}.cell.peer{background:var(--color-peer)}.cell.selected{background:var(--color-selected);outline:2px solid var(--color-primary-strong);outline-offset:-2px;z-index:1}.cell.box-right{box-shadow:inset -3px 0 0 0 var(--color-grid-strong)}.cell.box-bottom{box-shadow:inset 0 -3px 0 0 var(--color-grid-strong)}.cell.box-right.box-bottom{box-shadow:inset -3px 0 0 0 var(--color-grid-strong),inset 0 -3px 0 0 var(--color-grid-strong)}.pad{margin-top:16px;display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.pad-key{min-height:var(--tap);min-width:var(--tap);height:52px;border-radius:12px;border:1.5px solid var(--color-grid);background:var(--color-surface);color:var(--color-text);font-size:22px;font-weight:600;cursor:pointer}.pad-key:active{background:var(--color-selected)}.pad-key.del{color:var(--color-primary-strong);font-size:18px}.game-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.link-btn{background:none;border:none;color:var(--color-muted);font-size:15px;min-height:var(--tap);padding:0 8px;cursor:pointer}.diff-tag{font-weight:700;color:var(--color-text);font-size:16px}.done{text-align:center;padding:24px 8px}.done .cat{font-size:56px}.done h2{margin:12px 0}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000059;display:flex;align-items:center;justify-content:center;padding:24px}.modal{background:var(--color-surface);border-radius:var(--radius);padding:20px;width:100%;max-width:340px}.modal p{margin:0 0 16px;font-size:16px}:root{--color-danger: #d9634c;--color-hint: #cfe6c6}.cell .notes{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);width:100%;height:100%;padding:0}.cell .note-cell{display:flex;align-items:center;justify-content:center;font-size:clamp(9px,3vw,13px);font-weight:600;color:var(--color-text);line-height:1}.cell.conflict{color:var(--color-danger);background:#fbe7e2}.cell .conflict-mark{position:absolute;top:0;left:1px;font-size:9px;line-height:1;font-weight:800;color:var(--color-danger);pointer-events:none}.cell.hint-focus{background:var(--color-hint);outline:2px solid var(--color-accent);outline-offset:-2px;z-index:1}.mode-switch{display:inline-flex;border:1.5px solid var(--color-grid);border-radius:10px;overflow:hidden;flex:0 1 auto;min-width:0}.mode-opt{min-height:32px;padding:0 10px;border:none;background:var(--color-surface);color:var(--color-muted);font-size:13px;font-weight:600;cursor:pointer;white-space:nowrap}.mode-opt.active{background:var(--color-primary);color:#fff}@media (max-width: 360px){.game-top{flex-wrap:wrap;row-gap:6px}.mode-switch{flex:1 0 100%}.mode-opt{flex:1 1 0;padding:0 6px;text-align:center}}.note-banner{margin:0 0 8px;padding:6px 10px;border-radius:10px;background:var(--color-selected);color:var(--color-primary-strong);font-size:13px;font-weight:600;text-align:center}.gentle-toast{margin:10px 0 0;padding:8px 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.cat-art{width:92px;height:92px}.cat-art-img{width:100%;height:100%;object-fit:contain;display:block}.cat-art-fallback{font-size:40px;line-height:1}.cat-large .cat-art-fallback{font-size:64px}.cat-copy{margin:0;font-size:14px;color:var(--color-muted);text-align:center}.home .cat-line{font-size:16px}@keyframes cat-breathe{0%,to{transform:translateY(0)}50%{transform:translateY(-2px)}}@keyframes cat-tilt{0%,to{transform:rotate(0)}50%{transform:rotate(-2.5deg)}}@keyframes cat-fade{0%{opacity:.6}to{opacity:1}}@keyframes cat-pop{0%{transform:scale(.96)}60%{transform:scale(1.05)}to{transform:scale(1)}}.cat-anim-idle{animation:cat-breathe 4s ease-in-out infinite}.cat-anim-thinking{animation:cat-tilt 1.6s ease-in-out infinite}.cat-anim-hinting{animation:cat-breathe 2.2s ease-in-out infinite}.cat-anim-sleeping{opacity:.9}.cat-anim-celebrating{animation:cat-pop .6s ease-out}@media (prefers-reduced-motion: 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.mode-opt{flex:1 1 0;min-height:var(--tap);font-size:15px}.settings-links{display:flex;gap:10px;margin-top:20px}.settings-links .btn{margin:0}.history-empty{text-align:center;padding:32px 8px}.history-empty p{margin:6px 0}.history-list{list-style:none;padding:0;margin:8px 0}.history-item{display:grid;grid-template-columns:1fr auto auto;gap:10px;align-items:baseline;padding:12px 6px;border-bottom:1px solid var(--color-grid)}.history-date{color:var(--color-text);font-size:15px}.history-diff{color:var(--color-muted);font-size:13px}.history-time{color:var(--color-primary-strong);font-weight:700;font-size:15px}.help-section{margin:16px 0}.help-section p{margin:4px 0 0;font-size:15px;line-height:1.6;color:var(--color-text)}.help-item-title{margin:12px 0 0;font-size:16px;font-weight:700;color:var(--color-text)}.tutorial-screen{text-align:center;padding:8px 0}.tutorial-text{font-size:17px;line-height:1.6;margin:12px 0}.tutorial-dots{display:flex;gap:8px;justify-content:center;margin:8px 0 16px}.tutorial-dots .dot{width:8px;height:8px;border-radius:50%;background:var(--color-grid)}.tutorial-dots .dot.on{background:var(--color-primary)}.tutorial-row{display:flex;gap:4px;justify-content:center;flex-wrap:wrap;margin:12px 0}.t-cell{min-width:30px;min-height:40px;display:flex;align-items:center;justify-content:center;border:1.5px solid var(--color-grid);border-radius:8px;font-size:20px;font-weight:600;background:var(--color-surface)}.t-cell.blank{color:var(--color-primary-strong);border-style:dashed}.tutorial-pad{max-width:360px;margin:12px auto 0}.done-sub{font-size:14px;color:var(--color-muted);margin:4px 0 16px}[data-large-text] .btn{font-size:21px}[data-large-text] .cat-copy{font-size:17px}[data-large-text] .cat-line,[data-large-text] .diff-tag{font-size:19px}[data-large-text] .link-btn{font-size:18px}[data-large-text] .tool-label{font-size:13px}[data-large-text] .tool-icon{font-size:20px}[data-large-text] .pad-key{font-size:26px}[data-large-text] 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.note-cell{font-size:clamp(10px,3.4vw,15px);font-weight:700;color:var(--color-text)}.loading-note{text-align:center;color:var(--color-muted);margin-top:16px}.bank-error{margin-top:16px;padding:16px;border-radius:12px;background:var(--color-surface);border:1px solid var(--color-primary);text-align:center}.bank-error p{color:var(--color-text);margin:0 0 12px}.release-meta{text-align:center;color:var(--color-muted);font-size:12px;margin-top:28px}[data-large-text] .loading-note,[data-large-text] .bank-error p{font-size:17px}