.bmi-gauge{position:relative;height:20px;background:linear-gradient(to right,#3592e2 0%,#3592e2 37%,#4caf50 37%,#4caf50 50%,#F78015 50%,#F78015 60%,#e53935 60%,#e53935 70%,#b71c1c 70%);border-radius:10px;margin:15px 0 5px}
.gauge-marker{position:absolute;top:-5px;width:4px;height:30px;background:#333;border-radius:2px;transition:left .3s}
.bmi-legend{display:flex;justify-content:space-between;font-size:11px;color:#888;margin-bottom:15px}
.bmi-judgment{text-align:center;font-size:18px;font-weight:700;padding:10px;margin-bottom:15px;border-radius:3px}
.bmi-judgment.under{background:#e3f2fd;color:#1565c0}
.bmi-judgment.normal{background:#e8f5e9;color:#2e7d32}
.bmi-judgment.over1{background:#fff3e0;color:#e65100}
.bmi-judgment.over2{background:#fce4ec;color:#c62828}
.bmi-judgment.over3{background:#b71c1c;color:#fff}