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:root{--bg:#0a0a0f;--surface:#12121a;--surface2:#1a1a26;--border:#ffffff12;--border2:#ffffff21;--accent:#c084fc;--accent2:#f0abfc;--accent-glow:#c084fc4d;--acc-bg:#c084fc1a;--scan:#00b4d8;--scan-glow:#00b4d880;--scan-bg:#00b4d821;--group-scan:#00b4d8;--group-scan-glow:#00b4d880;--group-scan-bg:#00b4d81a;--text:#f1f0f5;--text-dim:#f1f0f573;--text-faint:#f1f0f533;--base-font:16px;--kana-font:18px}[data-fontsize=small]{--base-font:13px;--kana-font:15px}[data-fontsize=medium]{--base-font:16px;--kana-font:18px}[data-fontsize=large]{--base-font:20px;--kana-font:22px}[data-theme=light]{--bg:#f5f3f0;--surface:#fff;--surface2:#eeece8;--border:#00000014;--border2:#00000026;--accent:#7c3aed;--accent2:#6d28d9;--accent-glow:#7c3aed40;--acc-bg:#7c3aed14;--scan:#0096b7;--scan-glow:#0096b766;--scan-bg:#0096b71a;--group-scan:#0096b7;--group-scan-glow:#0096b766;--group-scan-bg:#0096b714;--text:#1a1714;--text-dim:#1a171480;--text-faint:#1a171447}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;margin:0;padding:0}html,body{overscroll-behavior:none;background:var(--bg);height:100dvh;color:var(--text);font-family:var(--font-zen-kaku),"Zen 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.2s}.history-toggle:hover{color:var(--text)}.history-list{flex-direction:column;gap:3px;margin-top:4px;display:flex}.history-item{background:var(--surface2);border:1px solid var(--border);border-radius:8px;align-items:center;gap:8px;padding:4px 8px;transition:all .15s;display:flex}.history-item.item-scanning{background:var(--scan-bg);border-color:var(--scan);box-shadow:0 0 10px var(--scan-glow)}.history-text{color:var(--text-dim);white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:12px;overflow:hidden}.history-resend{cursor:pointer;background:0 0;border:none;border-radius:4px;padding:2px 4px;font-size:14px;transition:transform .2s}.history-resend:hover{transform:scale(1.2)}.toast{background:var(--text);color:var(--bg);font-size:13px;font-family:var(--font-zen-kaku),"Zen Kaku Gothic New",sans-serif;opacity:0;pointer-events:none;z-index:999;white-space:nowrap;border-radius:20px;padding:8px 20px;transition:all .25s;position:fixed;bottom:24px;left:50%;transform:translate(-50%)translateY(10px);box-shadow:0 8px 30px #0006}.toast.show{opacity:1;transform:translate(-50%)translateY(0)}.scan-hint{background:var(--group-scan-bg);border:1px solid var(--group-scan);color:var(--group-scan);font-size:11px;font-family:var(--font-zen-kaku),"Zen Kaku Gothic New",sans-serif;pointer-events:none;z-index:50;opacity:0;white-space:nowrap;border-radius:20px;padding:4px 16px;transition:opacity .3s;position:fixed;bottom:8px;left:50%;transform:translate(-50%)}.scan-hint.show{opacity:1}.offline-badge{color:#fbbf24;z-index:100;font-size:10px;font-weight:600;font-family:var(--font-zen-kaku),"Zen Kaku Gothic New",sans-serif;pointer-events:none;background:#fbbf2426;border:1px solid #fbbf24;border-radius:12px;padding:2px 12px;position:fixed;top:4px;left:50%;transform:translate(-50%)}@media (min-height:600px) and (orientation:landscape){html,body{height:100dvh;overflow:hidden}}@media (max-height:599px),(orientation:portrait){.app{height:100dvh;padding-bottom:8px;overflow:hidden}.tabs{flex-wrap:wrap}.tab{flex:none;padding:5px 8px;font-size:11px}.kana-row-group{gap:3px}.kana-row-chars{grid-template-columns:repeat(5,1fr);gap:2px}.kana-btn{height:30px;font-size:14px}.kana-row-action{white-space:nowrap;min-width:0!important;padding:2px 4px!important;font-size:9px!important}}.tutorial-overlay{z-index:9000;background:#000000d9;flex-direction:column;justify-content:center;align-items:center;gap:16px;padding:20px;display:flex;position:fixed;inset:0}.tutorial-card{background:var(--surface);border:1px solid var(--border);text-align:center;border-radius:20px;width:100%;max-width:420px;padding:32px 28px}.tutorial-card h2{color:var(--text);font-size:22px;font-family:var(--font-zen-kaku),"Zen Kaku Gothic New",sans-serif;margin-bottom:12px}.tutorial-card p{color:var(--text-dim);font-size:15px;line-height:1.6;font-family:var(--font-zen-kaku),"Zen Kaku Gothic New",sans-serif;margin-bottom:16px}.tutorial-card .tutorial-icon{margin-bottom:12px;font-size:48px;display:block}.tutorial-progress{justify-content:center;gap:6px;margin-bottom:16px;display:flex}.tutorial-progress .dot{background:var(--border2);border-radius:50%;width:8px;height:8px;transition:background .2s}.tutorial-progress .dot.active{background:var(--accent)}.tutorial-actions{justify-content:center;gap:10px;display:flex}.tutorial-btn{cursor:pointer;font-size:14px;font-weight:600;font-family:var(--font-zen-kaku),"Zen Kaku Gothic New",sans-serif;border:none;border-radius:12px;padding:10px 24px;transition:all .2s}.tutorial-btn.primary{background:linear-gradient(135deg,var(--accent),#8b5cf6);color:#fff;box-shadow:0 4px 15px var(--accent-glow)}.tutorial-btn.primary:hover{transform:translateY(-1px)}.tutorial-btn.secondary{background:var(--surface2);border:1px solid var(--border);color:var(--text-dim)}.tutorial-btn.secondary:hover{border-color:var(--accent);color:var(--accent)}.tutorial-highlight{z-index:9001;border-radius:14px;position:relative;box-shadow:0 0 0 4px var(--accent),0 0 20px var(--accent-glow)!important}