.rh-lead{max-width:760px;margin:0 auto 16px;padding:0 20px;text-align:center;color:#555;line-height:1.7}.rh-controls{max-width:960px;margin:0 auto 16px;padding:14px 16px;border:1px solid var(--card-border);border-radius:14px;background:var(--card-bg)}.rh-modes{display:flex;justify-content:center;gap:0;max-width:420px;margin:0 auto;border:1.5px solid #cbd5e1;border-radius:999px;overflow:hidden}.rh-mode{flex:1 1 0;min-height:44px;padding:10px 6px;border:none;border-left:1px solid #e2e8f0;background:#fff;color:#475569;font-size:.95rem;font-weight:700;cursor:pointer}.rh-mode:first-child{border-left:none}.rh-mode.is-on{background:var(--accent-bg);color:#14514a;box-shadow:inset 0 -3px 0 var(--accent)}.rh-mode-desc{margin:8px 0 0;text-align:center;color:#64748b;font-size:.85rem}.rh-tools{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px;margin-top:12px}.rh-search{display:flex;align-items:center;gap:6px}.rh-search-label{color:#64748b;font-size:.85rem}.rh-search 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0;border-radius:12px;background:#f4f8f8;color:#14514a;font-size:2.6rem;font-weight:700;line-height:1.15;text-align:center}.rh-detail-body{min-width:0}.rh-detail-list{display:flex;flex-wrap:wrap;gap:4px 18px;margin:0}.rh-detail-list div{display:flex;align-items:baseline;gap:6px}.rh-detail-list dt{color:#64748b;font-size:.78rem}.rh-detail-list dd{margin:0;color:#1e293b;font-family:SF Mono,Consolas,monospace;font-size:1.05rem;font-weight:700;word-break:break-all}.rh-detail-note{margin:6px 0 0;color:#475569;font-size:.82rem;line-height:1.6}.rh-detail-hint{grid-column:1 / -1;margin:0;color:#94a3b8;font-size:.78rem}.rh-keyboard{display:flex;flex-direction:column;align-items:center;gap:4px}.rh-key-row{display:flex;gap:4px}.rh-key{position:relative;display:flex;align-items:center;justify-content:center;width:clamp(22px,5.6vw,32px);height:clamp(26px,6vw,32px);border-radius:6px;border-bottom:2px solid #cbd5e1;background:#f1f5f9;color:#64748b;font-family:SF Mono,Consolas,monospace;font-size:.8rem;font-weight:700}.rh-key.is-lit{border-bottom-color:#14514a;background:var(--accent);color:var(--on-accent)}.rh-key-order{position:absolute;top:-6px;right:-4px;min-width:14px;height:14px;border-radius:999px;background:#14514a;color:#fff;font-size:.55rem;line-height:14px;text-align:center}.rh-key-order:empty{display:none}.rh-sheet{max-width:960px;margin:0 auto;padding:16px 16px 10px;border:1px solid var(--card-border);border-radius:14px;background:var(--card-bg)}.rh-sheet-title{display:none;margin:0 0 4mm;font-size:12pt;font-weight:700;text-align:center}.rh-blocks{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);grid-auto-rows:min-content;gap:14px 18px;align-items:start}.rh-block-seion{grid-column:1;grid-row:1 / span 3}.rh-block-dakuon{grid-column:2;grid-row:1}.rh-block-handakuon{grid-column:2;grid-row:2}.rh-block-youon{grid-column:2;grid-row:3}.rh-block-extra{grid-column:1 / -1}.rh-block-title{width:auto;margin:0 0 6px;padding:0;border:none;color:#14514a;font-size:.95rem;font-weight:700}.rh-grid{display:grid;grid-template-columns:2.6em repeat(var(--rh-cols, 5),minmax(0,1fr));gap:3px}.rh-grid[data-heads="0"]{grid-template-columns:repeat(5,minmax(0,1fr))}.rh-corner,.rh-head,.rh-row-label{display:flex;align-items:center;justify-content:center;color:#94a3b8;font-size:.72rem;font-family:SF Mono,Consolas,monospace}.rh-row-label{font-family:inherit;font-size:.7rem}.rh-cell{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;min-height:52px;padding:4px 2px;border:1px solid #dbe3ea;border-radius:7px;background:#fff;color:#1e293b;cursor:pointer;text-align:center;overflow:hidden}.rh-cell-empty{border-color:transparent;background:transparent;cursor:default}.rh-cell:not(.rh-cell-empty):hover{border-color:var(--accent);background:#f4fbfa}.rh-cell.is-active{border-color:var(--accent);border-width:2px;background:var(--accent-bg)}.rh-cell.is-found{outline:2px dashed #14514a;outline-offset:1px}.rh-cell-kana{font-size:1.15rem;font-weight:700;line-height:1.1}.rh-cell-rule{color:#94a3b8;font-size:.62rem}.rh-cell-roma{font-family:SF Mono,Consolas,monospace;font-size:.82rem;font-weight:700;line-height:1.15;color:#334155;overflow-wrap:anywhere;word-break:normal}.rh-cell-alt{font-family:SF Mono,Consolas,monospace;font-size:.6rem;line-height:1.1;color:#64748b;overflow-wrap:anywhere;word-break:normal}.rh-cell-alt:empty{display:none}.rh-cell-wide{min-height:62px}.rh-sheet[data-mode=typing] .rh-cell-roma{font-size:.7rem}.is-upper .rh-cell-roma,.is-upper .rh-cell-alt,.is-upper .rh-detail-list dd,.is-upper .rh-key-cap{text-transform:uppercase}.rh-sheet-foot{margin:12px 0 0;color:#64748b;font-size:.76rem;line-height:1.6}.rh-count-note{max-width:960px;margin:10px auto 0;padding:0 16px;color:#94a3b8;font-size:.78rem;text-align:center}.rh-links{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;max-width:960px;margin:18px auto 0;padding:0 16px}.rh-links a{min-height:44px;display:flex;align-items:center;padding:10px 16px;border:1px solid var(--card-border);border-radius:999px;background:var(--card-bg);color:#14514a;font-size:.88rem;font-weight:700;text-decoration:none}.rh-links a:hover{border-color:var(--accent);background:var(--accent-bg)}@media (max-width: 760px){.rh-blocks{grid-template-columns:minmax(0,1fr)}.rh-block-seion,.rh-block-dakuon,.rh-block-handakuon,.rh-block-youon,.rh-block-extra{grid-column:1;grid-row:auto}.rh-detail{grid-template-columns:minmax(0,1fr)}.rh-detail-kana{width:64px;font-size:2rem}.rh-keyboard{align-self:center}.rh-sheet{padding:12px 10px 8px}.rh-grid{grid-template-columns:2.2em repeat(var(--rh-cols, 5),minmax(0,1fr));gap:2px}.rh-grid[data-heads="0"]{grid-template-columns:repeat(3,minmax(0,1fr))}.rh-cell{min-height:46px;border-radius:6px}.rh-cell-kana{font-size:1rem}.rh-cell-roma{font-size:.72rem}.rh-sheet[data-mode=typing] .rh-cell-roma{font-size:.62rem}.rh-cell-alt{font-size:.55rem}.rh-search input{width:150px}}@media print{@page{size:A4 portrait;margin:9mm 8mm 8mm}.rh-sheet{max-width:none;padding:0 0 8mm;border:none;border-radius:0;background:none;color:#000}.rh-sheet-title{display:block}.rh-blocks{gap:4mm 5mm}.rh-block-title{margin-bottom:1.2mm;color:#000;font-size:9pt}.rh-grid{gap:.7mm}.rh-corner,.rh-head,.rh-row-label{color:#444;font-size:6pt}.rh-cell{min-height:0;padding:1mm .4mm;border:.3pt solid #555;border-radius:.8mm;background:none;color:#000}.rh-cell-empty{border-color:transparent}.rh-cell.is-active,.rh-cell.is-found{border-width:.3pt;border-color:#555;border-style:solid;outline:none;background:none}.rh-cell-kana{font-size:9.5pt}.rh-cell-rule{color:#444;font-size:5.4pt}.rh-cell-roma{color:#000;font-size:7.8pt}.rh-sheet[data-mode=typing] .rh-cell-roma{font-size:6.4pt}.rh-cell-alt{color:#333;font-size:5.4pt}.rh-cell-wide{min-height:0}.rh-sheet-foot{margin-top:2.5mm;color:#333;font-size:6pt}.rh-block,.rh-grid{break-inside:avoid;page-break-inside:avoid}}