/* 工具页专用样式 */
.calculator-container {
    max-width: 800px;
    margin: 40px auto;
    background: #fff;
    border-radius: 24px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    padding: 30px;
}
.calculator-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.form-group label {
    font-weight: 600;
    color: #1a2a3a;
}
.form-group input, .form-group select {
    padding: 12px 16px;
    border: 1px solid #cbd5e1;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.2s;
}
.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: #d71718;
    box-shadow: 0 0 0 3px rgba(215,23,24,0.1);
}
.btn-calculate {
    background: #d71718;
    color: white;
    border: none;
    padding: 14px 24px;
    border-radius: 40px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 10px;
}
.btn-calculate:hover {
    background: #a31213;
    transform: translateY(-2px);
}
.result-box {
    margin-top: 30px;
    padding: 20px;
    background: #f8fafc;
    border-radius: 20px;
    text-align: center;
    border-left: 4px solid #d71718;
}
.result-size {
    font-size: 2.5rem;
    font-weight: 800;
    color: #d71718;
    margin: 10px 0;
}
.disclaimer {
    font-size: 0.8rem;
    color: #64748b;
    margin-top: 20px;
    text-align: center;
}
.calculator-header {
    text-align: center;
    margin-bottom: 30px;
}
.calculator-header h1 {
    font-size: 2rem;
    margin-bottom: 10px;
}
@media (max-width: 640px) {
    .calculator-container { padding: 20px; margin: 20px; }
    .result-size { font-size: 1.8rem; }
}