:root{--primary-color: #2e7d32;--primary-light: #4caf50;--primary-dark: #1b5e20;--secondary-color: #f1f8e9;--accent-color: #ff9800;--bg-color: #ffffff;--text-color: #333333;--glass-bg: rgba(255, 255, 255, .8);--glass-border: rgba(255, 255, 255, .3);--shadow: 0 4px 6px rgba(0, 0, 0, .1);--border-radius: 12px}*{box-sizing:border-box;margin:0;padding:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}body{background-color:#f5f5f5;color:var(--text-color);line-height:1.6;font-size:18px}#root{max-width:600px;margin:0 auto;min-height:100vh;background-color:var(--bg-color);box-shadow:0 0 20px #0000000d}.container{padding:20px}h1,h2,h3{color:var(--primary-dark);margin-bottom:1rem}.card{background:var(--glass-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--glass-border);border-radius:var(--border-radius);padding:20px;margin-bottom:20px;box-shadow:var(--shadow)}.input-group{margin-bottom:15px}label{display:block;font-weight:700;margin-bottom:5px;font-size:.9rem;color:var(--primary-dark)}input,select{width:100%;padding:12px;border:2px solid #ddd;border-radius:8px;font-size:1.1rem;outline:none;transition:border-color .2s}input:focus,select:focus{border-color:var(--primary-light)}.btn{display:inline-block;padding:12px 24px;border:none;border-radius:30px;font-size:1rem;font-weight:700;text-align:center;cursor:pointer;transition:all .2s;width:100%;margin-bottom:10px}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:active{transform:scale(.98);background-color:var(--primary-dark)}.btn-outline{background-color:transparent;border:2px solid var(--primary-color);color:var(--primary-color)}.btn-accent{background-color:var(--accent-color);color:#fff}.quick-buttons{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;margin-bottom:15px}.quick-btn{padding:10px;font-size:.9rem;border:1px solid var(--primary-light);background:var(--secondary-color);color:var(--primary-dark);border-radius:8px;cursor:pointer}.quick-btn:active{background:var(--primary-light);color:#fff}.result-area{background:var(--secondary-color);padding:20px;border-radius:var(--border-radius);text-align:center;margin-top:20px}.result-value{font-size:2.5rem;font-weight:800;color:var(--primary-dark);display:block}.result-unit{font-size:1.2rem;color:var(--primary-color)}.history-list{list-style:none}.history-item{border-bottom:1px solid #eee;padding:15px 0}.history-meta{font-size:.8rem;color:#666}.history-calc{font-weight:700}.tabs{display:flex;margin-bottom:20px;border-bottom:2px solid #eee}.tab{flex:1;text-align:center;padding:10px;cursor:pointer;font-weight:700;color:#999}.tab.active{color:var(--primary-color);border-bottom:3px solid var(--primary-color)}.flex-between{display:flex;justify-content:space-between;align-items:center}.mt-20{margin-top:20px}