:root{--bg: #f7f7f5;--surface: #ffffff;--text: #1f2421;--muted: #6b746e;--primary: #2f6f4f;--primary-dark: #245a40;--border: #e4e6e2;--danger: #c0392b;--radius: 14px;--tabbar-h: 64px}*{box-sizing:border-box}html,body,#root{margin:0;height:100%}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}.center-screen{min-height:100dvh;display:grid;place-items:center;padding:24px}.app-shell{min-height:100dvh;display:flex;flex-direction:column}.app-header{position:sticky;top:0;display:flex;align-items:center;justify-content:space-between;padding:14px 18px calc(14px + env(safe-area-inset-top,0px));background:var(--surface);border-bottom:1px solid var(--border);z-index:10}.app-title{font-size:1.25rem;font-weight:700;margin:0}.app-main{flex:1;padding:18px 16px calc(var(--tabbar-h) + 24px);max-width:720px;width:100%;margin:0 auto}.banner{background:#fff6e0;color:#6b5300;border-bottom:1px solid #f0e2b8;font-size:.85rem;padding:10px 16px;text-align:center}.tabbar{position:fixed;bottom:0;left:0;right:0;height:calc(var(--tabbar-h) + env(safe-area-inset-bottom,0px));padding-bottom:env(safe-area-inset-bottom,0px);display:flex;background:var(--surface);border-top:1px solid var(--border);z-index:10}.tab{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;text-decoration:none;color:var(--muted);font-size:.68rem}.tab.active{color:var(--primary);font-weight:600}.tab-icon{font-size:1.25rem;line-height:1}.page-title{font-size:1.5rem;margin:4px 0 2px}.page-subtitle{color:var(--muted);margin:0 0 18px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:14px}.widget-title{font-size:1rem;margin:0 0 6px}.muted{color:var(--muted)}.feature-list{margin:8px 0 0;padding-left:18px;line-height:1.7}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.tile{display:flex;flex-direction:column;gap:4px;text-decoration:none;color:var(--text)}.tile-icon{font-size:1.6rem}.tile-title{font-weight:600}.tile-hint{font-size:.8rem;color:var(--muted)}.login-card{max-width:360px;width:100%;text-align:center}input{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:10px;font-size:1rem;margin:10px 0}button{width:100%;padding:12px 14px;border:none;border-radius:10px;background:var(--primary);color:#fff;font-size:1rem;font-weight:600;cursor:pointer}button:disabled{opacity:.6}button:hover:not(:disabled){background:var(--primary-dark)}.link-btn{width:auto;background:none;color:var(--muted);font-weight:500;padding:4px 8px}.link-btn:hover{background:none;color:var(--text)}.error{color:var(--danger);font-size:.9rem}