.sg-container { max-width: 720px; margin: 0 auto; padding: 2em 1em; }
.sg-disclaimer { background: #f0f0f0; border-left: 4px solid #666; padding: 1em; font-size: 0.9em; margin-bottom: 2em; }
.sg-error { background: #f8d7da; border: 1px solid #dc3545; padding: 1em; margin-bottom: 1em; }
#sg-calc-form fieldset { border: 1px solid #ddd; border-radius: 6px; padding: 1em 1.5em; margin-bottom: 1.5em; }
#sg-calc-form legend { font-weight: bold; padding: 0 0.5em; }
#sg-calc-form label { display: block; margin-top: 0.75em; margin-bottom: 0.25em; }
#sg-calc-form input[type="number"],
#sg-calc-form input[type="text"],
#sg-calc-form select { width: 100%; max-width: 320px; padding: 0.4em; box-sizing: border-box; }
#sg-calc-form input[type="checkbox"] { width: auto; margin-right: 0.5em; }
.sg-prior-sentence-row { margin-bottom: 0.5em; display: flex; gap: 0.5em; align-items: center; }
.sg-calculate-btn { background: #1a4d8f; color: #fff; border: none; padding: 0.75em 2em; font-size: 1.1em; border-radius: 6px; cursor: pointer; }
.sg-calculate-btn:hover { background: #143a6b; }
.sg-results { margin-top: 2em; padding: 1.5em; background: #eef4fb; border-radius: 8px; }
.sg-range { font-size: 1.6em; font-weight: bold; color: #1a4d8f; }