:root,:root[data-theme=dark]{--bg: #0d0e11;--panel: #15171c;--panel2: #1d2027;--border: #262a33;--text: #e7e8eb;--muted: #8d919b;--accent: #34d399;--accent-soft: rgba(52, 211, 153, .14);--on-accent: #0a1410;--danger: #f87171;--danger-soft: rgba(248, 113, 113, .12);--warn: #fbbf24;--radius: 12px;color-scheme:dark}:root[data-theme=light]{--bg: #f6f7f8;--panel: #ffffff;--panel2: #f0f1f3;--border: #e3e5e9;--text: #1d1f24;--muted: #70747e;--accent: #059669;--accent-soft: rgba(5, 150, 105, .1);--on-accent: #ffffff;--danger: #dc2626;--danger-soft: rgba(220, 38, 38, .08);--warn: #b45309;color-scheme:light}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,Hiragino Sans,Noto Sans JP,sans-serif;-webkit-font-smoothing:antialiased;font-size:15px;transition:background .2s}.app{display:flex;flex-direction:column;min-height:100dvh}.content{flex:1;width:100%;max-width:640px;margin:0 auto;padding:18px 16px calc(76px + env(safe-area-inset-bottom))}.center-screen{min-height:100dvh;display:flex;align-items:center;justify-content:center;color:var(--muted)}h1{font-size:1.25rem;margin:6px 0 16px;letter-spacing:.01em;font-weight:700}h2{font-size:1rem;margin:20px 0 8px;font-weight:600}.tabbar{position:fixed;bottom:0;left:0;right:0;display:flex;align-items:stretch;background:color-mix(in srgb,var(--panel) 92%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom)}.tabbar a{flex:1;text-align:center;padding:15px 0 13px;color:var(--muted);text-decoration:none;font-size:.74rem;font-weight:600;letter-spacing:.04em;position:relative}.tabbar a.active{color:var(--text)}.tabbar a.active:after{content:"";position:absolute;top:0;left:50%;transform:translate(-50%);width:18px;height:2px;background:var(--accent);border-radius:2px}.theme-btn{flex:0 0 48px;background:transparent;border:none;color:var(--muted);font-size:1rem;cursor:pointer;padding:0}.badge{position:absolute;top:7px;right:calc(50% - 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